Home | History | Annotate | Download | only in clang-c
      1 /*===-- clang-c/Index.h - Indexing Public C Interface -------------*- C -*-===*\
      2 |*                                                                            *|
      3 |*                     The LLVM Compiler Infrastructure                       *|
      4 |*                                                                            *|
      5 |* This file is distributed under the University of Illinois Open Source      *|
      6 |* License. See LICENSE.TXT for details.                                      *|
      7 |*                                                                            *|
      8 |*===----------------------------------------------------------------------===*|
      9 |*                                                                            *|
     10 |* This header provides a public inferface to a Clang library for extracting  *|
     11 |* high-level symbol information from source files without exposing the full  *|
     12 |* Clang C++ API.                                                             *|
     13 |*                                                                            *|
     14 \*===----------------------------------------------------------------------===*/
     15 
     16 #ifndef CLANG_C_INDEX_H
     17 #define CLANG_C_INDEX_H
     18 
     19 #include <sys/stat.h>
     20 #include <time.h>
     21 #include <stdio.h>
     22 
     23 #include "clang-c/Platform.h"
     24 #include "clang-c/CXString.h"
     25 
     26 /**
     27  * \brief The version constants for the libclang API.
     28  * CINDEX_VERSION_MINOR should increase when there are API additions.
     29  * CINDEX_VERSION_MAJOR is intended for "major" source/ABI breaking changes.
     30  *
     31  * The policy about the libclang API was always to keep it source and ABI
     32  * compatible, thus CINDEX_VERSION_MAJOR is expected to remain stable.
     33  */
     34 #define CINDEX_VERSION_MAJOR 0
     35 #define CINDEX_VERSION_MINOR 19
     36 
     37 #define CINDEX_VERSION_ENCODE(major, minor) ( \
     38       ((major) * 10000)                       \
     39     + ((minor) *     1))
     40 
     41 #define CINDEX_VERSION CINDEX_VERSION_ENCODE( \
     42     CINDEX_VERSION_MAJOR,                     \
     43     CINDEX_VERSION_MINOR )
     44 
     45 #define CINDEX_VERSION_STRINGIZE_(major, minor)   \
     46     #major"."#minor
     47 #define CINDEX_VERSION_STRINGIZE(major, minor)    \
     48     CINDEX_VERSION_STRINGIZE_(major, minor)
     49 
     50 #define CINDEX_VERSION_STRING CINDEX_VERSION_STRINGIZE( \
     51     CINDEX_VERSION_MAJOR,                               \
     52     CINDEX_VERSION_MINOR)
     53 
     54 #ifdef __cplusplus
     55 extern "C" {
     56 #endif
     57 
     58 /** \defgroup CINDEX libclang: C Interface to Clang
     59  *
     60  * The C Interface to Clang provides a relatively small API that exposes
     61  * facilities for parsing source code into an abstract syntax tree (AST),
     62  * loading already-parsed ASTs, traversing the AST, associating
     63  * physical source locations with elements within the AST, and other
     64  * facilities that support Clang-based development tools.
     65  *
     66  * This C interface to Clang will never provide all of the information
     67  * representation stored in Clang's C++ AST, nor should it: the intent is to
     68  * maintain an API that is relatively stable from one release to the next,
     69  * providing only the basic functionality needed to support development tools.
     70  *
     71  * To avoid namespace pollution, data types are prefixed with "CX" and
     72  * functions are prefixed with "clang_".
     73  *
     74  * @{
     75  */
     76 
     77 /**
     78  * \brief An "index" that consists of a set of translation units that would
     79  * typically be linked together into an executable or library.
     80  */
     81 typedef void *CXIndex;
     82 
     83 /**
     84  * \brief A single translation unit, which resides in an index.
     85  */
     86 typedef struct CXTranslationUnitImpl *CXTranslationUnit;
     87 
     88 /**
     89  * \brief Opaque pointer representing client data that will be passed through
     90  * to various callbacks and visitors.
     91  */
     92 typedef void *CXClientData;
     93 
     94 /**
     95  * \brief Provides the contents of a file that has not yet been saved to disk.
     96  *
     97  * Each CXUnsavedFile instance provides the name of a file on the
     98  * system along with the current contents of that file that have not
     99  * yet been saved to disk.
    100  */
    101 struct CXUnsavedFile {
    102   /**
    103    * \brief The file whose contents have not yet been saved.
    104    *
    105    * This file must already exist in the file system.
    106    */
    107   const char *Filename;
    108 
    109   /**
    110    * \brief A buffer containing the unsaved contents of this file.
    111    */
    112   const char *Contents;
    113 
    114   /**
    115    * \brief The length of the unsaved contents of this buffer.
    116    */
    117   unsigned long Length;
    118 };
    119 
    120 /**
    121  * \brief Describes the availability of a particular entity, which indicates
    122  * whether the use of this entity will result in a warning or error due to
    123  * it being deprecated or unavailable.
    124  */
    125 enum CXAvailabilityKind {
    126   /**
    127    * \brief The entity is available.
    128    */
    129   CXAvailability_Available,
    130   /**
    131    * \brief The entity is available, but has been deprecated (and its use is
    132    * not recommended).
    133    */
    134   CXAvailability_Deprecated,
    135   /**
    136    * \brief The entity is not available; any use of it will be an error.
    137    */
    138   CXAvailability_NotAvailable,
    139   /**
    140    * \brief The entity is available, but not accessible; any use of it will be
    141    * an error.
    142    */
    143   CXAvailability_NotAccessible
    144 };
    145 
    146 /**
    147  * \brief Describes a version number of the form major.minor.subminor.
    148  */
    149 typedef struct CXVersion {
    150   /**
    151    * \brief The major version number, e.g., the '10' in '10.7.3'. A negative
    152    * value indicates that there is no version number at all.
    153    */
    154   int Major;
    155   /**
    156    * \brief The minor version number, e.g., the '7' in '10.7.3'. This value
    157    * will be negative if no minor version number was provided, e.g., for
    158    * version '10'.
    159    */
    160   int Minor;
    161   /**
    162    * \brief The subminor version number, e.g., the '3' in '10.7.3'. This value
    163    * will be negative if no minor or subminor version number was provided,
    164    * e.g., in version '10' or '10.7'.
    165    */
    166   int Subminor;
    167 } CXVersion;
    168 
    169 /**
    170  * \brief Provides a shared context for creating translation units.
    171  *
    172  * It provides two options:
    173  *
    174  * - excludeDeclarationsFromPCH: When non-zero, allows enumeration of "local"
    175  * declarations (when loading any new translation units). A "local" declaration
    176  * is one that belongs in the translation unit itself and not in a precompiled
    177  * header that was used by the translation unit. If zero, all declarations
    178  * will be enumerated.
    179  *
    180  * Here is an example:
    181  *
    182  * \code
    183  *   // excludeDeclsFromPCH = 1, displayDiagnostics=1
    184  *   Idx = clang_createIndex(1, 1);
    185  *
    186  *   // IndexTest.pch was produced with the following command:
    187  *   // "clang -x c IndexTest.h -emit-ast -o IndexTest.pch"
    188  *   TU = clang_createTranslationUnit(Idx, "IndexTest.pch");
    189  *
    190  *   // This will load all the symbols from 'IndexTest.pch'
    191  *   clang_visitChildren(clang_getTranslationUnitCursor(TU),
    192  *                       TranslationUnitVisitor, 0);
    193  *   clang_disposeTranslationUnit(TU);
    194  *
    195  *   // This will load all the symbols from 'IndexTest.c', excluding symbols
    196  *   // from 'IndexTest.pch'.
    197  *   char *args[] = { "-Xclang", "-include-pch=IndexTest.pch" };
    198  *   TU = clang_createTranslationUnitFromSourceFile(Idx, "IndexTest.c", 2, args,
    199  *                                                  0, 0);
    200  *   clang_visitChildren(clang_getTranslationUnitCursor(TU),
    201  *                       TranslationUnitVisitor, 0);
    202  *   clang_disposeTranslationUnit(TU);
    203  * \endcode
    204  *
    205  * This process of creating the 'pch', loading it separately, and using it (via
    206  * -include-pch) allows 'excludeDeclsFromPCH' to remove redundant callbacks
    207  * (which gives the indexer the same performance benefit as the compiler).
    208  */
    209 CINDEX_LINKAGE CXIndex clang_createIndex(int excludeDeclarationsFromPCH,
    210                                          int displayDiagnostics);
    211 
    212 /**
    213  * \brief Destroy the given index.
    214  *
    215  * The index must not be destroyed until all of the translation units created
    216  * within that index have been destroyed.
    217  */
    218 CINDEX_LINKAGE void clang_disposeIndex(CXIndex index);
    219 
    220 typedef enum {
    221   /**
    222    * \brief Used to indicate that no special CXIndex options are needed.
    223    */
    224   CXGlobalOpt_None = 0x0,
    225 
    226   /**
    227    * \brief Used to indicate that threads that libclang creates for indexing
    228    * purposes should use background priority.
    229    *
    230    * Affects #clang_indexSourceFile, #clang_indexTranslationUnit,
    231    * #clang_parseTranslationUnit, #clang_saveTranslationUnit.
    232    */
    233   CXGlobalOpt_ThreadBackgroundPriorityForIndexing = 0x1,
    234 
    235   /**
    236    * \brief Used to indicate that threads that libclang creates for editing
    237    * purposes should use background priority.
    238    *
    239    * Affects #clang_reparseTranslationUnit, #clang_codeCompleteAt,
    240    * #clang_annotateTokens
    241    */
    242   CXGlobalOpt_ThreadBackgroundPriorityForEditing = 0x2,
    243 
    244   /**
    245    * \brief Used to indicate that all threads that libclang creates should use
    246    * background priority.
    247    */
    248   CXGlobalOpt_ThreadBackgroundPriorityForAll =
    249       CXGlobalOpt_ThreadBackgroundPriorityForIndexing |
    250       CXGlobalOpt_ThreadBackgroundPriorityForEditing
    251 
    252 } CXGlobalOptFlags;
    253 
    254 /**
    255  * \brief Sets general options associated with a CXIndex.
    256  *
    257  * For example:
    258  * \code
    259  * CXIndex idx = ...;
    260  * clang_CXIndex_setGlobalOptions(idx,
    261  *     clang_CXIndex_getGlobalOptions(idx) |
    262  *     CXGlobalOpt_ThreadBackgroundPriorityForIndexing);
    263  * \endcode
    264  *
    265  * \param options A bitmask of options, a bitwise OR of CXGlobalOpt_XXX flags.
    266  */
    267 CINDEX_LINKAGE void clang_CXIndex_setGlobalOptions(CXIndex, unsigned options);
    268 
    269 /**
    270  * \brief Gets the general options associated with a CXIndex.
    271  *
    272  * \returns A bitmask of options, a bitwise OR of CXGlobalOpt_XXX flags that
    273  * are associated with the given CXIndex object.
    274  */
    275 CINDEX_LINKAGE unsigned clang_CXIndex_getGlobalOptions(CXIndex);
    276 
    277 /**
    278  * \defgroup CINDEX_FILES File manipulation routines
    279  *
    280  * @{
    281  */
    282 
    283 /**
    284  * \brief A particular source file that is part of a translation unit.
    285  */
    286 typedef void *CXFile;
    287 
    288 
    289 /**
    290  * \brief Retrieve the complete file and path name of the given file.
    291  */
    292 CINDEX_LINKAGE CXString clang_getFileName(CXFile SFile);
    293 
    294 /**
    295  * \brief Retrieve the last modification time of the given file.
    296  */
    297 CINDEX_LINKAGE time_t clang_getFileTime(CXFile SFile);
    298 
    299 /**
    300  * \brief Uniquely identifies a CXFile, that refers to the same underlying file,
    301  * across an indexing session.
    302  */
    303 typedef struct {
    304   unsigned long long data[3];
    305 } CXFileUniqueID;
    306 
    307 /**
    308  * \brief Retrieve the unique ID for the given \c file.
    309  *
    310  * \param file the file to get the ID for.
    311  * \param outID stores the returned CXFileUniqueID.
    312  * \returns If there was a failure getting the unique ID, returns non-zero,
    313  * otherwise returns 0.
    314 */
    315 CINDEX_LINKAGE int clang_getFileUniqueID(CXFile file, CXFileUniqueID *outID);
    316 
    317 /**
    318  * \brief Determine whether the given header is guarded against
    319  * multiple inclusions, either with the conventional
    320  * \#ifndef/\#define/\#endif macro guards or with \#pragma once.
    321  */
    322 CINDEX_LINKAGE unsigned
    323 clang_isFileMultipleIncludeGuarded(CXTranslationUnit tu, CXFile file);
    324 
    325 /**
    326  * \brief Retrieve a file handle within the given translation unit.
    327  *
    328  * \param tu the translation unit
    329  *
    330  * \param file_name the name of the file.
    331  *
    332  * \returns the file handle for the named file in the translation unit \p tu,
    333  * or a NULL file handle if the file was not a part of this translation unit.
    334  */
    335 CINDEX_LINKAGE CXFile clang_getFile(CXTranslationUnit tu,
    336                                     const char *file_name);
    337 
    338 /**
    339  * @}
    340  */
    341 
    342 /**
    343  * \defgroup CINDEX_LOCATIONS Physical source locations
    344  *
    345  * Clang represents physical source locations in its abstract syntax tree in
    346  * great detail, with file, line, and column information for the majority of
    347  * the tokens parsed in the source code. These data types and functions are
    348  * used to represent source location information, either for a particular
    349  * point in the program or for a range of points in the program, and extract
    350  * specific location information from those data types.
    351  *
    352  * @{
    353  */
    354 
    355 /**
    356  * \brief Identifies a specific source location within a translation
    357  * unit.
    358  *
    359  * Use clang_getExpansionLocation() or clang_getSpellingLocation()
    360  * to map a source location to a particular file, line, and column.
    361  */
    362 typedef struct {
    363   const void *ptr_data[2];
    364   unsigned int_data;
    365 } CXSourceLocation;
    366 
    367 /**
    368  * \brief Identifies a half-open character range in the source code.
    369  *
    370  * Use clang_getRangeStart() and clang_getRangeEnd() to retrieve the
    371  * starting and end locations from a source range, respectively.
    372  */
    373 typedef struct {
    374   const void *ptr_data[2];
    375   unsigned begin_int_data;
    376   unsigned end_int_data;
    377 } CXSourceRange;
    378 
    379 /**
    380  * \brief Retrieve a NULL (invalid) source location.
    381  */
    382 CINDEX_LINKAGE CXSourceLocation clang_getNullLocation(void);
    383 
    384 /**
    385  * \brief Determine whether two source locations, which must refer into
    386  * the same translation unit, refer to exactly the same point in the source
    387  * code.
    388  *
    389  * \returns non-zero if the source locations refer to the same location, zero
    390  * if they refer to different locations.
    391  */
    392 CINDEX_LINKAGE unsigned clang_equalLocations(CXSourceLocation loc1,
    393                                              CXSourceLocation loc2);
    394 
    395 /**
    396  * \brief Retrieves the source location associated with a given file/line/column
    397  * in a particular translation unit.
    398  */
    399 CINDEX_LINKAGE CXSourceLocation clang_getLocation(CXTranslationUnit tu,
    400                                                   CXFile file,
    401                                                   unsigned line,
    402                                                   unsigned column);
    403 /**
    404  * \brief Retrieves the source location associated with a given character offset
    405  * in a particular translation unit.
    406  */
    407 CINDEX_LINKAGE CXSourceLocation clang_getLocationForOffset(CXTranslationUnit tu,
    408                                                            CXFile file,
    409                                                            unsigned offset);
    410 
    411 /**
    412  * \brief Returns non-zero if the given source location is in a system header.
    413  */
    414 CINDEX_LINKAGE int clang_Location_isInSystemHeader(CXSourceLocation location);
    415 
    416 /**
    417  * \brief Retrieve a NULL (invalid) source range.
    418  */
    419 CINDEX_LINKAGE CXSourceRange clang_getNullRange(void);
    420 
    421 /**
    422  * \brief Retrieve a source range given the beginning and ending source
    423  * locations.
    424  */
    425 CINDEX_LINKAGE CXSourceRange clang_getRange(CXSourceLocation begin,
    426                                             CXSourceLocation end);
    427 
    428 /**
    429  * \brief Determine whether two ranges are equivalent.
    430  *
    431  * \returns non-zero if the ranges are the same, zero if they differ.
    432  */
    433 CINDEX_LINKAGE unsigned clang_equalRanges(CXSourceRange range1,
    434                                           CXSourceRange range2);
    435 
    436 /**
    437  * \brief Returns non-zero if \p range is null.
    438  */
    439 CINDEX_LINKAGE int clang_Range_isNull(CXSourceRange range);
    440 
    441 /**
    442  * \brief Retrieve the file, line, column, and offset represented by
    443  * the given source location.
    444  *
    445  * If the location refers into a macro expansion, retrieves the
    446  * location of the macro expansion.
    447  *
    448  * \param location the location within a source file that will be decomposed
    449  * into its parts.
    450  *
    451  * \param file [out] if non-NULL, will be set to the file to which the given
    452  * source location points.
    453  *
    454  * \param line [out] if non-NULL, will be set to the line to which the given
    455  * source location points.
    456  *
    457  * \param column [out] if non-NULL, will be set to the column to which the given
    458  * source location points.
    459  *
    460  * \param offset [out] if non-NULL, will be set to the offset into the
    461  * buffer to which the given source location points.
    462  */
    463 CINDEX_LINKAGE void clang_getExpansionLocation(CXSourceLocation location,
    464                                                CXFile *file,
    465                                                unsigned *line,
    466                                                unsigned *column,
    467                                                unsigned *offset);
    468 
    469 /**
    470  * \brief Retrieve the file, line, column, and offset represented by
    471  * the given source location, as specified in a # line directive.
    472  *
    473  * Example: given the following source code in a file somefile.c
    474  *
    475  * \code
    476  * #123 "dummy.c" 1
    477  *
    478  * static int func(void)
    479  * {
    480  *     return 0;
    481  * }
    482  * \endcode
    483  *
    484  * the location information returned by this function would be
    485  *
    486  * File: dummy.c Line: 124 Column: 12
    487  *
    488  * whereas clang_getExpansionLocation would have returned
    489  *
    490  * File: somefile.c Line: 3 Column: 12
    491  *
    492  * \param location the location within a source file that will be decomposed
    493  * into its parts.
    494  *
    495  * \param filename [out] if non-NULL, will be set to the filename of the
    496  * source location. Note that filenames returned will be for "virtual" files,
    497  * which don't necessarily exist on the machine running clang - e.g. when
    498  * parsing preprocessed output obtained from a different environment. If
    499  * a non-NULL value is passed in, remember to dispose of the returned value
    500  * using \c clang_disposeString() once you've finished with it. For an invalid
    501  * source location, an empty string is returned.
    502  *
    503  * \param line [out] if non-NULL, will be set to the line number of the
    504  * source location. For an invalid source location, zero is returned.
    505  *
    506  * \param column [out] if non-NULL, will be set to the column number of the
    507  * source location. For an invalid source location, zero is returned.
    508  */
    509 CINDEX_LINKAGE void clang_getPresumedLocation(CXSourceLocation location,
    510                                               CXString *filename,
    511                                               unsigned *line,
    512                                               unsigned *column);
    513 
    514 /**
    515  * \brief Legacy API to retrieve the file, line, column, and offset represented
    516  * by the given source location.
    517  *
    518  * This interface has been replaced by the newer interface
    519  * #clang_getExpansionLocation(). See that interface's documentation for
    520  * details.
    521  */
    522 CINDEX_LINKAGE void clang_getInstantiationLocation(CXSourceLocation location,
    523                                                    CXFile *file,
    524                                                    unsigned *line,
    525                                                    unsigned *column,
    526                                                    unsigned *offset);
    527 
    528 /**
    529  * \brief Retrieve the file, line, column, and offset represented by
    530  * the given source location.
    531  *
    532  * If the location refers into a macro instantiation, return where the
    533  * location was originally spelled in the source file.
    534  *
    535  * \param location the location within a source file that will be decomposed
    536  * into its parts.
    537  *
    538  * \param file [out] if non-NULL, will be set to the file to which the given
    539  * source location points.
    540  *
    541  * \param line [out] if non-NULL, will be set to the line to which the given
    542  * source location points.
    543  *
    544  * \param column [out] if non-NULL, will be set to the column to which the given
    545  * source location points.
    546  *
    547  * \param offset [out] if non-NULL, will be set to the offset into the
    548  * buffer to which the given source location points.
    549  */
    550 CINDEX_LINKAGE void clang_getSpellingLocation(CXSourceLocation location,
    551                                               CXFile *file,
    552                                               unsigned *line,
    553                                               unsigned *column,
    554                                               unsigned *offset);
    555 
    556 /**
    557  * \brief Retrieve the file, line, column, and offset represented by
    558  * the given source location.
    559  *
    560  * If the location refers into a macro expansion, return where the macro was
    561  * expanded or where the macro argument was written, if the location points at
    562  * a macro argument.
    563  *
    564  * \param location the location within a source file that will be decomposed
    565  * into its parts.
    566  *
    567  * \param file [out] if non-NULL, will be set to the file to which the given
    568  * source location points.
    569  *
    570  * \param line [out] if non-NULL, will be set to the line to which the given
    571  * source location points.
    572  *
    573  * \param column [out] if non-NULL, will be set to the column to which the given
    574  * source location points.
    575  *
    576  * \param offset [out] if non-NULL, will be set to the offset into the
    577  * buffer to which the given source location points.
    578  */
    579 CINDEX_LINKAGE void clang_getFileLocation(CXSourceLocation location,
    580                                           CXFile *file,
    581                                           unsigned *line,
    582                                           unsigned *column,
    583                                           unsigned *offset);
    584 
    585 /**
    586  * \brief Retrieve a source location representing the first character within a
    587  * source range.
    588  */
    589 CINDEX_LINKAGE CXSourceLocation clang_getRangeStart(CXSourceRange range);
    590 
    591 /**
    592  * \brief Retrieve a source location representing the last character within a
    593  * source range.
    594  */
    595 CINDEX_LINKAGE CXSourceLocation clang_getRangeEnd(CXSourceRange range);
    596 
    597 /**
    598  * @}
    599  */
    600 
    601 /**
    602  * \defgroup CINDEX_DIAG Diagnostic reporting
    603  *
    604  * @{
    605  */
    606 
    607 /**
    608  * \brief Describes the severity of a particular diagnostic.
    609  */
    610 enum CXDiagnosticSeverity {
    611   /**
    612    * \brief A diagnostic that has been suppressed, e.g., by a command-line
    613    * option.
    614    */
    615   CXDiagnostic_Ignored = 0,
    616 
    617   /**
    618    * \brief This diagnostic is a note that should be attached to the
    619    * previous (non-note) diagnostic.
    620    */
    621   CXDiagnostic_Note    = 1,
    622 
    623   /**
    624    * \brief This diagnostic indicates suspicious code that may not be
    625    * wrong.
    626    */
    627   CXDiagnostic_Warning = 2,
    628 
    629   /**
    630    * \brief This diagnostic indicates that the code is ill-formed.
    631    */
    632   CXDiagnostic_Error   = 3,
    633 
    634   /**
    635    * \brief This diagnostic indicates that the code is ill-formed such
    636    * that future parser recovery is unlikely to produce useful
    637    * results.
    638    */
    639   CXDiagnostic_Fatal   = 4
    640 };
    641 
    642 /**
    643  * \brief A single diagnostic, containing the diagnostic's severity,
    644  * location, text, source ranges, and fix-it hints.
    645  */
    646 typedef void *CXDiagnostic;
    647 
    648 /**
    649  * \brief A group of CXDiagnostics.
    650  */
    651 typedef void *CXDiagnosticSet;
    652 
    653 /**
    654  * \brief Determine the number of diagnostics in a CXDiagnosticSet.
    655  */
    656 CINDEX_LINKAGE unsigned clang_getNumDiagnosticsInSet(CXDiagnosticSet Diags);
    657 
    658 /**
    659  * \brief Retrieve a diagnostic associated with the given CXDiagnosticSet.
    660  *
    661  * \param Diags the CXDiagnosticSet to query.
    662  * \param Index the zero-based diagnostic number to retrieve.
    663  *
    664  * \returns the requested diagnostic. This diagnostic must be freed
    665  * via a call to \c clang_disposeDiagnostic().
    666  */
    667 CINDEX_LINKAGE CXDiagnostic clang_getDiagnosticInSet(CXDiagnosticSet Diags,
    668                                                      unsigned Index);
    669 
    670 
    671 /**
    672  * \brief Describes the kind of error that occurred (if any) in a call to
    673  * \c clang_loadDiagnostics.
    674  */
    675 enum CXLoadDiag_Error {
    676   /**
    677    * \brief Indicates that no error occurred.
    678    */
    679   CXLoadDiag_None = 0,
    680 
    681   /**
    682    * \brief Indicates that an unknown error occurred while attempting to
    683    * deserialize diagnostics.
    684    */
    685   CXLoadDiag_Unknown = 1,
    686 
    687   /**
    688    * \brief Indicates that the file containing the serialized diagnostics
    689    * could not be opened.
    690    */
    691   CXLoadDiag_CannotLoad = 2,
    692 
    693   /**
    694    * \brief Indicates that the serialized diagnostics file is invalid or
    695    * corrupt.
    696    */
    697   CXLoadDiag_InvalidFile = 3
    698 };
    699 
    700 /**
    701  * \brief Deserialize a set of diagnostics from a Clang diagnostics bitcode
    702  * file.
    703  *
    704  * \param file The name of the file to deserialize.
    705  * \param error A pointer to a enum value recording if there was a problem
    706  *        deserializing the diagnostics.
    707  * \param errorString A pointer to a CXString for recording the error string
    708  *        if the file was not successfully loaded.
    709  *
    710  * \returns A loaded CXDiagnosticSet if successful, and NULL otherwise.  These
    711  * diagnostics should be released using clang_disposeDiagnosticSet().
    712  */
    713 CINDEX_LINKAGE CXDiagnosticSet clang_loadDiagnostics(const char *file,
    714                                                   enum CXLoadDiag_Error *error,
    715                                                   CXString *errorString);
    716 
    717 /**
    718  * \brief Release a CXDiagnosticSet and all of its contained diagnostics.
    719  */
    720 CINDEX_LINKAGE void clang_disposeDiagnosticSet(CXDiagnosticSet Diags);
    721 
    722 /**
    723  * \brief Retrieve the child diagnostics of a CXDiagnostic.
    724  *
    725  * This CXDiagnosticSet does not need to be released by
    726  * clang_diposeDiagnosticSet.
    727  */
    728 CINDEX_LINKAGE CXDiagnosticSet clang_getChildDiagnostics(CXDiagnostic D);
    729 
    730 /**
    731  * \brief Determine the number of diagnostics produced for the given
    732  * translation unit.
    733  */
    734 CINDEX_LINKAGE unsigned clang_getNumDiagnostics(CXTranslationUnit Unit);
    735 
    736 /**
    737  * \brief Retrieve a diagnostic associated with the given translation unit.
    738  *
    739  * \param Unit the translation unit to query.
    740  * \param Index the zero-based diagnostic number to retrieve.
    741  *
    742  * \returns the requested diagnostic. This diagnostic must be freed
    743  * via a call to \c clang_disposeDiagnostic().
    744  */
    745 CINDEX_LINKAGE CXDiagnostic clang_getDiagnostic(CXTranslationUnit Unit,
    746                                                 unsigned Index);
    747 
    748 /**
    749  * \brief Retrieve the complete set of diagnostics associated with a
    750  *        translation unit.
    751  *
    752  * \param Unit the translation unit to query.
    753  */
    754 CINDEX_LINKAGE CXDiagnosticSet
    755   clang_getDiagnosticSetFromTU(CXTranslationUnit Unit);
    756 
    757 /**
    758  * \brief Destroy a diagnostic.
    759  */
    760 CINDEX_LINKAGE void clang_disposeDiagnostic(CXDiagnostic Diagnostic);
    761 
    762 /**
    763  * \brief Options to control the display of diagnostics.
    764  *
    765  * The values in this enum are meant to be combined to customize the
    766  * behavior of \c clang_displayDiagnostic().
    767  */
    768 enum CXDiagnosticDisplayOptions {
    769   /**
    770    * \brief Display the source-location information where the
    771    * diagnostic was located.
    772    *
    773    * When set, diagnostics will be prefixed by the file, line, and
    774    * (optionally) column to which the diagnostic refers. For example,
    775    *
    776    * \code
    777    * test.c:28: warning: extra tokens at end of #endif directive
    778    * \endcode
    779    *
    780    * This option corresponds to the clang flag \c -fshow-source-location.
    781    */
    782   CXDiagnostic_DisplaySourceLocation = 0x01,
    783 
    784   /**
    785    * \brief If displaying the source-location information of the
    786    * diagnostic, also include the column number.
    787    *
    788    * This option corresponds to the clang flag \c -fshow-column.
    789    */
    790   CXDiagnostic_DisplayColumn = 0x02,
    791 
    792   /**
    793    * \brief If displaying the source-location information of the
    794    * diagnostic, also include information about source ranges in a
    795    * machine-parsable format.
    796    *
    797    * This option corresponds to the clang flag
    798    * \c -fdiagnostics-print-source-range-info.
    799    */
    800   CXDiagnostic_DisplaySourceRanges = 0x04,
    801 
    802   /**
    803    * \brief Display the option name associated with this diagnostic, if any.
    804    *
    805    * The option name displayed (e.g., -Wconversion) will be placed in brackets
    806    * after the diagnostic text. This option corresponds to the clang flag
    807    * \c -fdiagnostics-show-option.
    808    */
    809   CXDiagnostic_DisplayOption = 0x08,
    810 
    811   /**
    812    * \brief Display the category number associated with this diagnostic, if any.
    813    *
    814    * The category number is displayed within brackets after the diagnostic text.
    815    * This option corresponds to the clang flag
    816    * \c -fdiagnostics-show-category=id.
    817    */
    818   CXDiagnostic_DisplayCategoryId = 0x10,
    819 
    820   /**
    821    * \brief Display the category name associated with this diagnostic, if any.
    822    *
    823    * The category name is displayed within brackets after the diagnostic text.
    824    * This option corresponds to the clang flag
    825    * \c -fdiagnostics-show-category=name.
    826    */
    827   CXDiagnostic_DisplayCategoryName = 0x20
    828 };
    829 
    830 /**
    831  * \brief Format the given diagnostic in a manner that is suitable for display.
    832  *
    833  * This routine will format the given diagnostic to a string, rendering
    834  * the diagnostic according to the various options given. The
    835  * \c clang_defaultDiagnosticDisplayOptions() function returns the set of
    836  * options that most closely mimics the behavior of the clang compiler.
    837  *
    838  * \param Diagnostic The diagnostic to print.
    839  *
    840  * \param Options A set of options that control the diagnostic display,
    841  * created by combining \c CXDiagnosticDisplayOptions values.
    842  *
    843  * \returns A new string containing for formatted diagnostic.
    844  */
    845 CINDEX_LINKAGE CXString clang_formatDiagnostic(CXDiagnostic Diagnostic,
    846                                                unsigned Options);
    847 
    848 /**
    849  * \brief Retrieve the set of display options most similar to the
    850  * default behavior of the clang compiler.
    851  *
    852  * \returns A set of display options suitable for use with \c
    853  * clang_displayDiagnostic().
    854  */
    855 CINDEX_LINKAGE unsigned clang_defaultDiagnosticDisplayOptions(void);
    856 
    857 /**
    858  * \brief Determine the severity of the given diagnostic.
    859  */
    860 CINDEX_LINKAGE enum CXDiagnosticSeverity
    861 clang_getDiagnosticSeverity(CXDiagnostic);
    862 
    863 /**
    864  * \brief Retrieve the source location of the given diagnostic.
    865  *
    866  * This location is where Clang would print the caret ('^') when
    867  * displaying the diagnostic on the command line.
    868  */
    869 CINDEX_LINKAGE CXSourceLocation clang_getDiagnosticLocation(CXDiagnostic);
    870 
    871 /**
    872  * \brief Retrieve the text of the given diagnostic.
    873  */
    874 CINDEX_LINKAGE CXString clang_getDiagnosticSpelling(CXDiagnostic);
    875 
    876 /**
    877  * \brief Retrieve the name of the command-line option that enabled this
    878  * diagnostic.
    879  *
    880  * \param Diag The diagnostic to be queried.
    881  *
    882  * \param Disable If non-NULL, will be set to the option that disables this
    883  * diagnostic (if any).
    884  *
    885  * \returns A string that contains the command-line option used to enable this
    886  * warning, such as "-Wconversion" or "-pedantic".
    887  */
    888 CINDEX_LINKAGE CXString clang_getDiagnosticOption(CXDiagnostic Diag,
    889                                                   CXString *Disable);
    890 
    891 /**
    892  * \brief Retrieve the category number for this diagnostic.
    893  *
    894  * Diagnostics can be categorized into groups along with other, related
    895  * diagnostics (e.g., diagnostics under the same warning flag). This routine
    896  * retrieves the category number for the given diagnostic.
    897  *
    898  * \returns The number of the category that contains this diagnostic, or zero
    899  * if this diagnostic is uncategorized.
    900  */
    901 CINDEX_LINKAGE unsigned clang_getDiagnosticCategory(CXDiagnostic);
    902 
    903 /**
    904  * \brief Retrieve the name of a particular diagnostic category.  This
    905  *  is now deprecated.  Use clang_getDiagnosticCategoryText()
    906  *  instead.
    907  *
    908  * \param Category A diagnostic category number, as returned by
    909  * \c clang_getDiagnosticCategory().
    910  *
    911  * \returns The name of the given diagnostic category.
    912  */
    913 CINDEX_DEPRECATED CINDEX_LINKAGE
    914 CXString clang_getDiagnosticCategoryName(unsigned Category);
    915 
    916 /**
    917  * \brief Retrieve the diagnostic category text for a given diagnostic.
    918  *
    919  * \returns The text of the given diagnostic category.
    920  */
    921 CINDEX_LINKAGE CXString clang_getDiagnosticCategoryText(CXDiagnostic);
    922 
    923 /**
    924  * \brief Determine the number of source ranges associated with the given
    925  * diagnostic.
    926  */
    927 CINDEX_LINKAGE unsigned clang_getDiagnosticNumRanges(CXDiagnostic);
    928 
    929 /**
    930  * \brief Retrieve a source range associated with the diagnostic.
    931  *
    932  * A diagnostic's source ranges highlight important elements in the source
    933  * code. On the command line, Clang displays source ranges by
    934  * underlining them with '~' characters.
    935  *
    936  * \param Diagnostic the diagnostic whose range is being extracted.
    937  *
    938  * \param Range the zero-based index specifying which range to
    939  *
    940  * \returns the requested source range.
    941  */
    942 CINDEX_LINKAGE CXSourceRange clang_getDiagnosticRange(CXDiagnostic Diagnostic,
    943                                                       unsigned Range);
    944 
    945 /**
    946  * \brief Determine the number of fix-it hints associated with the
    947  * given diagnostic.
    948  */
    949 CINDEX_LINKAGE unsigned clang_getDiagnosticNumFixIts(CXDiagnostic Diagnostic);
    950 
    951 /**
    952  * \brief Retrieve the replacement information for a given fix-it.
    953  *
    954  * Fix-its are described in terms of a source range whose contents
    955  * should be replaced by a string. This approach generalizes over
    956  * three kinds of operations: removal of source code (the range covers
    957  * the code to be removed and the replacement string is empty),
    958  * replacement of source code (the range covers the code to be
    959  * replaced and the replacement string provides the new code), and
    960  * insertion (both the start and end of the range point at the
    961  * insertion location, and the replacement string provides the text to
    962  * insert).
    963  *
    964  * \param Diagnostic The diagnostic whose fix-its are being queried.
    965  *
    966  * \param FixIt The zero-based index of the fix-it.
    967  *
    968  * \param ReplacementRange The source range whose contents will be
    969  * replaced with the returned replacement string. Note that source
    970  * ranges are half-open ranges [a, b), so the source code should be
    971  * replaced from a and up to (but not including) b.
    972  *
    973  * \returns A string containing text that should be replace the source
    974  * code indicated by the \c ReplacementRange.
    975  */
    976 CINDEX_LINKAGE CXString clang_getDiagnosticFixIt(CXDiagnostic Diagnostic,
    977                                                  unsigned FixIt,
    978                                                CXSourceRange *ReplacementRange);
    979 
    980 /**
    981  * @}
    982  */
    983 
    984 /**
    985  * \defgroup CINDEX_TRANSLATION_UNIT Translation unit manipulation
    986  *
    987  * The routines in this group provide the ability to create and destroy
    988  * translation units from files, either by parsing the contents of the files or
    989  * by reading in a serialized representation of a translation unit.
    990  *
    991  * @{
    992  */
    993 
    994 /**
    995  * \brief Get the original translation unit source file name.
    996  */
    997 CINDEX_LINKAGE CXString
    998 clang_getTranslationUnitSpelling(CXTranslationUnit CTUnit);
    999 
   1000 /**
   1001  * \brief Return the CXTranslationUnit for a given source file and the provided
   1002  * command line arguments one would pass to the compiler.
   1003  *
   1004  * Note: The 'source_filename' argument is optional.  If the caller provides a
   1005  * NULL pointer, the name of the source file is expected to reside in the
   1006  * specified command line arguments.
   1007  *
   1008  * Note: When encountered in 'clang_command_line_args', the following options
   1009  * are ignored:
   1010  *
   1011  *   '-c'
   1012  *   '-emit-ast'
   1013  *   '-fsyntax-only'
   1014  *   '-o \<output file>'  (both '-o' and '\<output file>' are ignored)
   1015  *
   1016  * \param CIdx The index object with which the translation unit will be
   1017  * associated.
   1018  *
   1019  * \param source_filename The name of the source file to load, or NULL if the
   1020  * source file is included in \p clang_command_line_args.
   1021  *
   1022  * \param num_clang_command_line_args The number of command-line arguments in
   1023  * \p clang_command_line_args.
   1024  *
   1025  * \param clang_command_line_args The command-line arguments that would be
   1026  * passed to the \c clang executable if it were being invoked out-of-process.
   1027  * These command-line options will be parsed and will affect how the translation
   1028  * unit is parsed. Note that the following options are ignored: '-c',
   1029  * '-emit-ast', '-fsyntax-only' (which is the default), and '-o \<output file>'.
   1030  *
   1031  * \param num_unsaved_files the number of unsaved file entries in \p
   1032  * unsaved_files.
   1033  *
   1034  * \param unsaved_files the files that have not yet been saved to disk
   1035  * but may be required for code completion, including the contents of
   1036  * those files.  The contents and name of these files (as specified by
   1037  * CXUnsavedFile) are copied when necessary, so the client only needs to
   1038  * guarantee their validity until the call to this function returns.
   1039  */
   1040 CINDEX_LINKAGE CXTranslationUnit clang_createTranslationUnitFromSourceFile(
   1041                                          CXIndex CIdx,
   1042                                          const char *source_filename,
   1043                                          int num_clang_command_line_args,
   1044                                    const char * const *clang_command_line_args,
   1045                                          unsigned num_unsaved_files,
   1046                                          struct CXUnsavedFile *unsaved_files);
   1047 
   1048 /**
   1049  * \brief Create a translation unit from an AST file (-emit-ast).
   1050  */
   1051 CINDEX_LINKAGE CXTranslationUnit clang_createTranslationUnit(CXIndex,
   1052                                              const char *ast_filename);
   1053 
   1054 /**
   1055  * \brief Flags that control the creation of translation units.
   1056  *
   1057  * The enumerators in this enumeration type are meant to be bitwise
   1058  * ORed together to specify which options should be used when
   1059  * constructing the translation unit.
   1060  */
   1061 enum CXTranslationUnit_Flags {
   1062   /**
   1063    * \brief Used to indicate that no special translation-unit options are
   1064    * needed.
   1065    */
   1066   CXTranslationUnit_None = 0x0,
   1067 
   1068   /**
   1069    * \brief Used to indicate that the parser should construct a "detailed"
   1070    * preprocessing record, including all macro definitions and instantiations.
   1071    *
   1072    * Constructing a detailed preprocessing record requires more memory
   1073    * and time to parse, since the information contained in the record
   1074    * is usually not retained. However, it can be useful for
   1075    * applications that require more detailed information about the
   1076    * behavior of the preprocessor.
   1077    */
   1078   CXTranslationUnit_DetailedPreprocessingRecord = 0x01,
   1079 
   1080   /**
   1081    * \brief Used to indicate that the translation unit is incomplete.
   1082    *
   1083    * When a translation unit is considered "incomplete", semantic
   1084    * analysis that is typically performed at the end of the
   1085    * translation unit will be suppressed. For example, this suppresses
   1086    * the completion of tentative declarations in C and of
   1087    * instantiation of implicitly-instantiation function templates in
   1088    * C++. This option is typically used when parsing a header with the
   1089    * intent of producing a precompiled header.
   1090    */
   1091   CXTranslationUnit_Incomplete = 0x02,
   1092 
   1093   /**
   1094    * \brief Used to indicate that the translation unit should be built with an
   1095    * implicit precompiled header for the preamble.
   1096    *
   1097    * An implicit precompiled header is used as an optimization when a
   1098    * particular translation unit is likely to be reparsed many times
   1099    * when the sources aren't changing that often. In this case, an
   1100    * implicit precompiled header will be built containing all of the
   1101    * initial includes at the top of the main file (what we refer to as
   1102    * the "preamble" of the file). In subsequent parses, if the
   1103    * preamble or the files in it have not changed, \c
   1104    * clang_reparseTranslationUnit() will re-use the implicit
   1105    * precompiled header to improve parsing performance.
   1106    */
   1107   CXTranslationUnit_PrecompiledPreamble = 0x04,
   1108 
   1109   /**
   1110    * \brief Used to indicate that the translation unit should cache some
   1111    * code-completion results with each reparse of the source file.
   1112    *
   1113    * Caching of code-completion results is a performance optimization that
   1114    * introduces some overhead to reparsing but improves the performance of
   1115    * code-completion operations.
   1116    */
   1117   CXTranslationUnit_CacheCompletionResults = 0x08,
   1118 
   1119   /**
   1120    * \brief Used to indicate that the translation unit will be serialized with
   1121    * \c clang_saveTranslationUnit.
   1122    *
   1123    * This option is typically used when parsing a header with the intent of
   1124    * producing a precompiled header.
   1125    */
   1126   CXTranslationUnit_ForSerialization = 0x10,
   1127 
   1128   /**
   1129    * \brief DEPRECATED: Enabled chained precompiled preambles in C++.
   1130    *
   1131    * Note: this is a *temporary* option that is available only while
   1132    * we are testing C++ precompiled preamble support. It is deprecated.
   1133    */
   1134   CXTranslationUnit_CXXChainedPCH = 0x20,
   1135 
   1136   /**
   1137    * \brief Used to indicate that function/method bodies should be skipped while
   1138    * parsing.
   1139    *
   1140    * This option can be used to search for declarations/definitions while
   1141    * ignoring the usages.
   1142    */
   1143   CXTranslationUnit_SkipFunctionBodies = 0x40,
   1144 
   1145   /**
   1146    * \brief Used to indicate that brief documentation comments should be
   1147    * included into the set of code completions returned from this translation
   1148    * unit.
   1149    */
   1150   CXTranslationUnit_IncludeBriefCommentsInCodeCompletion = 0x80
   1151 };
   1152 
   1153 /**
   1154  * \brief Returns the set of flags that is suitable for parsing a translation
   1155  * unit that is being edited.
   1156  *
   1157  * The set of flags returned provide options for \c clang_parseTranslationUnit()
   1158  * to indicate that the translation unit is likely to be reparsed many times,
   1159  * either explicitly (via \c clang_reparseTranslationUnit()) or implicitly
   1160  * (e.g., by code completion (\c clang_codeCompletionAt())). The returned flag
   1161  * set contains an unspecified set of optimizations (e.g., the precompiled
   1162  * preamble) geared toward improving the performance of these routines. The
   1163  * set of optimizations enabled may change from one version to the next.
   1164  */
   1165 CINDEX_LINKAGE unsigned clang_defaultEditingTranslationUnitOptions(void);
   1166 
   1167 /**
   1168  * \brief Parse the given source file and the translation unit corresponding
   1169  * to that file.
   1170  *
   1171  * This routine is the main entry point for the Clang C API, providing the
   1172  * ability to parse a source file into a translation unit that can then be
   1173  * queried by other functions in the API. This routine accepts a set of
   1174  * command-line arguments so that the compilation can be configured in the same
   1175  * way that the compiler is configured on the command line.
   1176  *
   1177  * \param CIdx The index object with which the translation unit will be
   1178  * associated.
   1179  *
   1180  * \param source_filename The name of the source file to load, or NULL if the
   1181  * source file is included in \p command_line_args.
   1182  *
   1183  * \param command_line_args The command-line arguments that would be
   1184  * passed to the \c clang executable if it were being invoked out-of-process.
   1185  * These command-line options will be parsed and will affect how the translation
   1186  * unit is parsed. Note that the following options are ignored: '-c',
   1187  * '-emit-ast', '-fsyntax-only' (which is the default), and '-o \<output file>'.
   1188  *
   1189  * \param num_command_line_args The number of command-line arguments in
   1190  * \p command_line_args.
   1191  *
   1192  * \param unsaved_files the files that have not yet been saved to disk
   1193  * but may be required for parsing, including the contents of
   1194  * those files.  The contents and name of these files (as specified by
   1195  * CXUnsavedFile) are copied when necessary, so the client only needs to
   1196  * guarantee their validity until the call to this function returns.
   1197  *
   1198  * \param num_unsaved_files the number of unsaved file entries in \p
   1199  * unsaved_files.
   1200  *
   1201  * \param options A bitmask of options that affects how the translation unit
   1202  * is managed but not its compilation. This should be a bitwise OR of the
   1203  * CXTranslationUnit_XXX flags.
   1204  *
   1205  * \returns A new translation unit describing the parsed code and containing
   1206  * any diagnostics produced by the compiler. If there is a failure from which
   1207  * the compiler cannot recover, returns NULL.
   1208  */
   1209 CINDEX_LINKAGE CXTranslationUnit clang_parseTranslationUnit(CXIndex CIdx,
   1210                                                     const char *source_filename,
   1211                                          const char * const *command_line_args,
   1212                                                       int num_command_line_args,
   1213                                             struct CXUnsavedFile *unsaved_files,
   1214                                                      unsigned num_unsaved_files,
   1215                                                             unsigned options);
   1216 
   1217 /**
   1218  * \brief Flags that control how translation units are saved.
   1219  *
   1220  * The enumerators in this enumeration type are meant to be bitwise
   1221  * ORed together to specify which options should be used when
   1222  * saving the translation unit.
   1223  */
   1224 enum CXSaveTranslationUnit_Flags {
   1225   /**
   1226    * \brief Used to indicate that no special saving options are needed.
   1227    */
   1228   CXSaveTranslationUnit_None = 0x0
   1229 };
   1230 
   1231 /**
   1232  * \brief Returns the set of flags that is suitable for saving a translation
   1233  * unit.
   1234  *
   1235  * The set of flags returned provide options for
   1236  * \c clang_saveTranslationUnit() by default. The returned flag
   1237  * set contains an unspecified set of options that save translation units with
   1238  * the most commonly-requested data.
   1239  */
   1240 CINDEX_LINKAGE unsigned clang_defaultSaveOptions(CXTranslationUnit TU);
   1241 
   1242 /**
   1243  * \brief Describes the kind of error that occurred (if any) in a call to
   1244  * \c clang_saveTranslationUnit().
   1245  */
   1246 enum CXSaveError {
   1247   /**
   1248    * \brief Indicates that no error occurred while saving a translation unit.
   1249    */
   1250   CXSaveError_None = 0,
   1251 
   1252   /**
   1253    * \brief Indicates that an unknown error occurred while attempting to save
   1254    * the file.
   1255    *
   1256    * This error typically indicates that file I/O failed when attempting to
   1257    * write the file.
   1258    */
   1259   CXSaveError_Unknown = 1,
   1260 
   1261   /**
   1262    * \brief Indicates that errors during translation prevented this attempt
   1263    * to save the translation unit.
   1264    *
   1265    * Errors that prevent the translation unit from being saved can be
   1266    * extracted using \c clang_getNumDiagnostics() and \c clang_getDiagnostic().
   1267    */
   1268   CXSaveError_TranslationErrors = 2,
   1269 
   1270   /**
   1271    * \brief Indicates that the translation unit to be saved was somehow
   1272    * invalid (e.g., NULL).
   1273    */
   1274   CXSaveError_InvalidTU = 3
   1275 };
   1276 
   1277 /**
   1278  * \brief Saves a translation unit into a serialized representation of
   1279  * that translation unit on disk.
   1280  *
   1281  * Any translation unit that was parsed without error can be saved
   1282  * into a file. The translation unit can then be deserialized into a
   1283  * new \c CXTranslationUnit with \c clang_createTranslationUnit() or,
   1284  * if it is an incomplete translation unit that corresponds to a
   1285  * header, used as a precompiled header when parsing other translation
   1286  * units.
   1287  *
   1288  * \param TU The translation unit to save.
   1289  *
   1290  * \param FileName The file to which the translation unit will be saved.
   1291  *
   1292  * \param options A bitmask of options that affects how the translation unit
   1293  * is saved. This should be a bitwise OR of the
   1294  * CXSaveTranslationUnit_XXX flags.
   1295  *
   1296  * \returns A value that will match one of the enumerators of the CXSaveError
   1297  * enumeration. Zero (CXSaveError_None) indicates that the translation unit was
   1298  * saved successfully, while a non-zero value indicates that a problem occurred.
   1299  */
   1300 CINDEX_LINKAGE int clang_saveTranslationUnit(CXTranslationUnit TU,
   1301                                              const char *FileName,
   1302                                              unsigned options);
   1303 
   1304 /**
   1305  * \brief Destroy the specified CXTranslationUnit object.
   1306  */
   1307 CINDEX_LINKAGE void clang_disposeTranslationUnit(CXTranslationUnit);
   1308 
   1309 /**
   1310  * \brief Flags that control the reparsing of translation units.
   1311  *
   1312  * The enumerators in this enumeration type are meant to be bitwise
   1313  * ORed together to specify which options should be used when
   1314  * reparsing the translation unit.
   1315  */
   1316 enum CXReparse_Flags {
   1317   /**
   1318    * \brief Used to indicate that no special reparsing options are needed.
   1319    */
   1320   CXReparse_None = 0x0
   1321 };
   1322 
   1323 /**
   1324  * \brief Returns the set of flags that is suitable for reparsing a translation
   1325  * unit.
   1326  *
   1327  * The set of flags returned provide options for
   1328  * \c clang_reparseTranslationUnit() by default. The returned flag
   1329  * set contains an unspecified set of optimizations geared toward common uses
   1330  * of reparsing. The set of optimizations enabled may change from one version
   1331  * to the next.
   1332  */
   1333 CINDEX_LINKAGE unsigned clang_defaultReparseOptions(CXTranslationUnit TU);
   1334 
   1335 /**
   1336  * \brief Reparse the source files that produced this translation unit.
   1337  *
   1338  * This routine can be used to re-parse the source files that originally
   1339  * created the given translation unit, for example because those source files
   1340  * have changed (either on disk or as passed via \p unsaved_files). The
   1341  * source code will be reparsed with the same command-line options as it
   1342  * was originally parsed.
   1343  *
   1344  * Reparsing a translation unit invalidates all cursors and source locations
   1345  * that refer into that translation unit. This makes reparsing a translation
   1346  * unit semantically equivalent to destroying the translation unit and then
   1347  * creating a new translation unit with the same command-line arguments.
   1348  * However, it may be more efficient to reparse a translation
   1349  * unit using this routine.
   1350  *
   1351  * \param TU The translation unit whose contents will be re-parsed. The
   1352  * translation unit must originally have been built with
   1353  * \c clang_createTranslationUnitFromSourceFile().
   1354  *
   1355  * \param num_unsaved_files The number of unsaved file entries in \p
   1356  * unsaved_files.
   1357  *
   1358  * \param unsaved_files The files that have not yet been saved to disk
   1359  * but may be required for parsing, including the contents of
   1360  * those files.  The contents and name of these files (as specified by
   1361  * CXUnsavedFile) are copied when necessary, so the client only needs to
   1362  * guarantee their validity until the call to this function returns.
   1363  *
   1364  * \param options A bitset of options composed of the flags in CXReparse_Flags.
   1365  * The function \c clang_defaultReparseOptions() produces a default set of
   1366  * options recommended for most uses, based on the translation unit.
   1367  *
   1368  * \returns 0 if the sources could be reparsed. A non-zero value will be
   1369  * returned if reparsing was impossible, such that the translation unit is
   1370  * invalid. In such cases, the only valid call for \p TU is
   1371  * \c clang_disposeTranslationUnit(TU).
   1372  */
   1373 CINDEX_LINKAGE int clang_reparseTranslationUnit(CXTranslationUnit TU,
   1374                                                 unsigned num_unsaved_files,
   1375                                           struct CXUnsavedFile *unsaved_files,
   1376                                                 unsigned options);
   1377 
   1378 /**
   1379   * \brief Categorizes how memory is being used by a translation unit.
   1380   */
   1381 enum CXTUResourceUsageKind {
   1382   CXTUResourceUsage_AST = 1,
   1383   CXTUResourceUsage_Identifiers = 2,
   1384   CXTUResourceUsage_Selectors = 3,
   1385   CXTUResourceUsage_GlobalCompletionResults = 4,
   1386   CXTUResourceUsage_SourceManagerContentCache = 5,
   1387   CXTUResourceUsage_AST_SideTables = 6,
   1388   CXTUResourceUsage_SourceManager_Membuffer_Malloc = 7,
   1389   CXTUResourceUsage_SourceManager_Membuffer_MMap = 8,
   1390   CXTUResourceUsage_ExternalASTSource_Membuffer_Malloc = 9,
   1391   CXTUResourceUsage_ExternalASTSource_Membuffer_MMap = 10,
   1392   CXTUResourceUsage_Preprocessor = 11,
   1393   CXTUResourceUsage_PreprocessingRecord = 12,
   1394   CXTUResourceUsage_SourceManager_DataStructures = 13,
   1395   CXTUResourceUsage_Preprocessor_HeaderSearch = 14,
   1396   CXTUResourceUsage_MEMORY_IN_BYTES_BEGIN = CXTUResourceUsage_AST,
   1397   CXTUResourceUsage_MEMORY_IN_BYTES_END =
   1398     CXTUResourceUsage_Preprocessor_HeaderSearch,
   1399 
   1400   CXTUResourceUsage_First = CXTUResourceUsage_AST,
   1401   CXTUResourceUsage_Last = CXTUResourceUsage_Preprocessor_HeaderSearch
   1402 };
   1403 
   1404 /**
   1405   * \brief Returns the human-readable null-terminated C string that represents
   1406   *  the name of the memory category.  This string should never be freed.
   1407   */
   1408 CINDEX_LINKAGE
   1409 const char *clang_getTUResourceUsageName(enum CXTUResourceUsageKind kind);
   1410 
   1411 typedef struct CXTUResourceUsageEntry {
   1412   /* \brief The memory usage category. */
   1413   enum CXTUResourceUsageKind kind;
   1414   /* \brief Amount of resources used.
   1415       The units will depend on the resource kind. */
   1416   unsigned long amount;
   1417 } CXTUResourceUsageEntry;
   1418 
   1419 /**
   1420   * \brief The memory usage of a CXTranslationUnit, broken into categories.
   1421   */
   1422 typedef struct CXTUResourceUsage {
   1423   /* \brief Private data member, used for queries. */
   1424   void *data;
   1425 
   1426   /* \brief The number of entries in the 'entries' array. */
   1427   unsigned numEntries;
   1428 
   1429   /* \brief An array of key-value pairs, representing the breakdown of memory
   1430             usage. */
   1431   CXTUResourceUsageEntry *entries;
   1432 
   1433 } CXTUResourceUsage;
   1434 
   1435 /**
   1436   * \brief Return the memory usage of a translation unit.  This object
   1437   *  should be released with clang_disposeCXTUResourceUsage().
   1438   */
   1439 CINDEX_LINKAGE CXTUResourceUsage clang_getCXTUResourceUsage(CXTranslationUnit TU);
   1440 
   1441 CINDEX_LINKAGE void clang_disposeCXTUResourceUsage(CXTUResourceUsage usage);
   1442 
   1443 /**
   1444  * @}
   1445  */
   1446 
   1447 /**
   1448  * \brief Describes the kind of entity that a cursor refers to.
   1449  */
   1450 enum CXCursorKind {
   1451   /* Declarations */
   1452   /**
   1453    * \brief A declaration whose specific kind is not exposed via this
   1454    * interface.
   1455    *
   1456    * Unexposed declarations have the same operations as any other kind
   1457    * of declaration; one can extract their location information,
   1458    * spelling, find their definitions, etc. However, the specific kind
   1459    * of the declaration is not reported.
   1460    */
   1461   CXCursor_UnexposedDecl                 = 1,
   1462   /** \brief A C or C++ struct. */
   1463   CXCursor_StructDecl                    = 2,
   1464   /** \brief A C or C++ union. */
   1465   CXCursor_UnionDecl                     = 3,
   1466   /** \brief A C++ class. */
   1467   CXCursor_ClassDecl                     = 4,
   1468   /** \brief An enumeration. */
   1469   CXCursor_EnumDecl                      = 5,
   1470   /**
   1471    * \brief A field (in C) or non-static data member (in C++) in a
   1472    * struct, union, or C++ class.
   1473    */
   1474   CXCursor_FieldDecl                     = 6,
   1475   /** \brief An enumerator constant. */
   1476   CXCursor_EnumConstantDecl              = 7,
   1477   /** \brief A function. */
   1478   CXCursor_FunctionDecl                  = 8,
   1479   /** \brief A variable. */
   1480   CXCursor_VarDecl                       = 9,
   1481   /** \brief A function or method parameter. */
   1482   CXCursor_ParmDecl                      = 10,
   1483   /** \brief An Objective-C \@interface. */
   1484   CXCursor_ObjCInterfaceDecl             = 11,
   1485   /** \brief An Objective-C \@interface for a category. */
   1486   CXCursor_ObjCCategoryDecl              = 12,
   1487   /** \brief An Objective-C \@protocol declaration. */
   1488   CXCursor_ObjCProtocolDecl              = 13,
   1489   /** \brief An Objective-C \@property declaration. */
   1490   CXCursor_ObjCPropertyDecl              = 14,
   1491   /** \brief An Objective-C instance variable. */
   1492   CXCursor_ObjCIvarDecl                  = 15,
   1493   /** \brief An Objective-C instance method. */
   1494   CXCursor_ObjCInstanceMethodDecl        = 16,
   1495   /** \brief An Objective-C class method. */
   1496   CXCursor_ObjCClassMethodDecl           = 17,
   1497   /** \brief An Objective-C \@implementation. */
   1498   CXCursor_ObjCImplementationDecl        = 18,
   1499   /** \brief An Objective-C \@implementation for a category. */
   1500   CXCursor_ObjCCategoryImplDecl          = 19,
   1501   /** \brief A typedef */
   1502   CXCursor_TypedefDecl                   = 20,
   1503   /** \brief A C++ class method. */
   1504   CXCursor_CXXMethod                     = 21,
   1505   /** \brief A C++ namespace. */
   1506   CXCursor_Namespace                     = 22,
   1507   /** \brief A linkage specification, e.g. 'extern "C"'. */
   1508   CXCursor_LinkageSpec                   = 23,
   1509   /** \brief A C++ constructor. */
   1510   CXCursor_Constructor                   = 24,
   1511   /** \brief A C++ destructor. */
   1512   CXCursor_Destructor                    = 25,
   1513   /** \brief A C++ conversion function. */
   1514   CXCursor_ConversionFunction            = 26,
   1515   /** \brief A C++ template type parameter. */
   1516   CXCursor_TemplateTypeParameter         = 27,
   1517   /** \brief A C++ non-type template parameter. */
   1518   CXCursor_NonTypeTemplateParameter      = 28,
   1519   /** \brief A C++ template template parameter. */
   1520   CXCursor_TemplateTemplateParameter     = 29,
   1521   /** \brief A C++ function template. */
   1522   CXCursor_FunctionTemplate              = 30,
   1523   /** \brief A C++ class template. */
   1524   CXCursor_ClassTemplate                 = 31,
   1525   /** \brief A C++ class template partial specialization. */
   1526   CXCursor_ClassTemplatePartialSpecialization = 32,
   1527   /** \brief A C++ namespace alias declaration. */
   1528   CXCursor_NamespaceAlias                = 33,
   1529   /** \brief A C++ using directive. */
   1530   CXCursor_UsingDirective                = 34,
   1531   /** \brief A C++ using declaration. */
   1532   CXCursor_UsingDeclaration              = 35,
   1533   /** \brief A C++ alias declaration */
   1534   CXCursor_TypeAliasDecl                 = 36,
   1535   /** \brief An Objective-C \@synthesize definition. */
   1536   CXCursor_ObjCSynthesizeDecl            = 37,
   1537   /** \brief An Objective-C \@dynamic definition. */
   1538   CXCursor_ObjCDynamicDecl               = 38,
   1539   /** \brief An access specifier. */
   1540   CXCursor_CXXAccessSpecifier            = 39,
   1541 
   1542   CXCursor_FirstDecl                     = CXCursor_UnexposedDecl,
   1543   CXCursor_LastDecl                      = CXCursor_CXXAccessSpecifier,
   1544 
   1545   /* References */
   1546   CXCursor_FirstRef                      = 40, /* Decl references */
   1547   CXCursor_ObjCSuperClassRef             = 40,
   1548   CXCursor_ObjCProtocolRef               = 41,
   1549   CXCursor_ObjCClassRef                  = 42,
   1550   /**
   1551    * \brief A reference to a type declaration.
   1552    *
   1553    * A type reference occurs anywhere where a type is named but not
   1554    * declared. For example, given:
   1555    *
   1556    * \code
   1557    * typedef unsigned size_type;
   1558    * size_type size;
   1559    * \endcode
   1560    *
   1561    * The typedef is a declaration of size_type (CXCursor_TypedefDecl),
   1562    * while the type of the variable "size" is referenced. The cursor
   1563    * referenced by the type of size is the typedef for size_type.
   1564    */
   1565   CXCursor_TypeRef                       = 43,
   1566   CXCursor_CXXBaseSpecifier              = 44,
   1567   /**
   1568    * \brief A reference to a class template, function template, template
   1569    * template parameter, or class template partial specialization.
   1570    */
   1571   CXCursor_TemplateRef                   = 45,
   1572   /**
   1573    * \brief A reference to a namespace or namespace alias.
   1574    */
   1575   CXCursor_NamespaceRef                  = 46,
   1576   /**
   1577    * \brief A reference to a member of a struct, union, or class that occurs in
   1578    * some non-expression context, e.g., a designated initializer.
   1579    */
   1580   CXCursor_MemberRef                     = 47,
   1581   /**
   1582    * \brief A reference to a labeled statement.
   1583    *
   1584    * This cursor kind is used to describe the jump to "start_over" in the
   1585    * goto statement in the following example:
   1586    *
   1587    * \code
   1588    *   start_over:
   1589    *     ++counter;
   1590    *
   1591    *     goto start_over;
   1592    * \endcode
   1593    *
   1594    * A label reference cursor refers to a label statement.
   1595    */
   1596   CXCursor_LabelRef                      = 48,
   1597 
   1598   /**
   1599    * \brief A reference to a set of overloaded functions or function templates
   1600    * that has not yet been resolved to a specific function or function template.
   1601    *
   1602    * An overloaded declaration reference cursor occurs in C++ templates where
   1603    * a dependent name refers to a function. For example:
   1604    *
   1605    * \code
   1606    * template<typename T> void swap(T&, T&);
   1607    *
   1608    * struct X { ... };
   1609    * void swap(X&, X&);
   1610    *
   1611    * template<typename T>
   1612    * void reverse(T* first, T* last) {
   1613    *   while (first < last - 1) {
   1614    *     swap(*first, *--last);
   1615    *     ++first;
   1616    *   }
   1617    * }
   1618    *
   1619    * struct Y { };
   1620    * void swap(Y&, Y&);
   1621    * \endcode
   1622    *
   1623    * Here, the identifier "swap" is associated with an overloaded declaration
   1624    * reference. In the template definition, "swap" refers to either of the two
   1625    * "swap" functions declared above, so both results will be available. At
   1626    * instantiation time, "swap" may also refer to other functions found via
   1627    * argument-dependent lookup (e.g., the "swap" function at the end of the
   1628    * example).
   1629    *
   1630    * The functions \c clang_getNumOverloadedDecls() and
   1631    * \c clang_getOverloadedDecl() can be used to retrieve the definitions
   1632    * referenced by this cursor.
   1633    */
   1634   CXCursor_OverloadedDeclRef             = 49,
   1635 
   1636   /**
   1637    * \brief A reference to a variable that occurs in some non-expression
   1638    * context, e.g., a C++ lambda capture list.
   1639    */
   1640   CXCursor_VariableRef                   = 50,
   1641 
   1642   CXCursor_LastRef                       = CXCursor_VariableRef,
   1643 
   1644   /* Error conditions */
   1645   CXCursor_FirstInvalid                  = 70,
   1646   CXCursor_InvalidFile                   = 70,
   1647   CXCursor_NoDeclFound                   = 71,
   1648   CXCursor_NotImplemented                = 72,
   1649   CXCursor_InvalidCode                   = 73,
   1650   CXCursor_LastInvalid                   = CXCursor_InvalidCode,
   1651 
   1652   /* Expressions */
   1653   CXCursor_FirstExpr                     = 100,
   1654 
   1655   /**
   1656    * \brief An expression whose specific kind is not exposed via this
   1657    * interface.
   1658    *
   1659    * Unexposed expressions have the same operations as any other kind
   1660    * of expression; one can extract their location information,
   1661    * spelling, children, etc. However, the specific kind of the
   1662    * expression is not reported.
   1663    */
   1664   CXCursor_UnexposedExpr                 = 100,
   1665 
   1666   /**
   1667    * \brief An expression that refers to some value declaration, such
   1668    * as a function, varible, or enumerator.
   1669    */
   1670   CXCursor_DeclRefExpr                   = 101,
   1671 
   1672   /**
   1673    * \brief An expression that refers to a member of a struct, union,
   1674    * class, Objective-C class, etc.
   1675    */
   1676   CXCursor_MemberRefExpr                 = 102,
   1677 
   1678   /** \brief An expression that calls a function. */
   1679   CXCursor_CallExpr                      = 103,
   1680 
   1681   /** \brief An expression that sends a message to an Objective-C
   1682    object or class. */
   1683   CXCursor_ObjCMessageExpr               = 104,
   1684 
   1685   /** \brief An expression that represents a block literal. */
   1686   CXCursor_BlockExpr                     = 105,
   1687 
   1688   /** \brief An integer literal.
   1689    */
   1690   CXCursor_IntegerLiteral                = 106,
   1691 
   1692   /** \brief A floating point number literal.
   1693    */
   1694   CXCursor_FloatingLiteral               = 107,
   1695 
   1696   /** \brief An imaginary number literal.
   1697    */
   1698   CXCursor_ImaginaryLiteral              = 108,
   1699 
   1700   /** \brief A string literal.
   1701    */
   1702   CXCursor_StringLiteral                 = 109,
   1703 
   1704   /** \brief A character literal.
   1705    */
   1706   CXCursor_CharacterLiteral              = 110,
   1707 
   1708   /** \brief A parenthesized expression, e.g. "(1)".
   1709    *
   1710    * This AST node is only formed if full location information is requested.
   1711    */
   1712   CXCursor_ParenExpr                     = 111,
   1713 
   1714   /** \brief This represents the unary-expression's (except sizeof and
   1715    * alignof).
   1716    */
   1717   CXCursor_UnaryOperator                 = 112,
   1718 
   1719   /** \brief [C99 6.5.2.1] Array Subscripting.
   1720    */
   1721   CXCursor_ArraySubscriptExpr            = 113,
   1722 
   1723   /** \brief A builtin binary operation expression such as "x + y" or
   1724    * "x <= y".
   1725    */
   1726   CXCursor_BinaryOperator                = 114,
   1727 
   1728   /** \brief Compound assignment such as "+=".
   1729    */
   1730   CXCursor_CompoundAssignOperator        = 115,
   1731 
   1732   /** \brief The ?: ternary operator.
   1733    */
   1734   CXCursor_ConditionalOperator           = 116,
   1735 
   1736   /** \brief An explicit cast in C (C99 6.5.4) or a C-style cast in C++
   1737    * (C++ [expr.cast]), which uses the syntax (Type)expr.
   1738    *
   1739    * For example: (int)f.
   1740    */
   1741   CXCursor_CStyleCastExpr                = 117,
   1742 
   1743   /** \brief [C99 6.5.2.5]
   1744    */
   1745   CXCursor_CompoundLiteralExpr           = 118,
   1746 
   1747   /** \brief Describes an C or C++ initializer list.
   1748    */
   1749   CXCursor_InitListExpr                  = 119,
   1750 
   1751   /** \brief The GNU address of label extension, representing &&label.
   1752    */
   1753   CXCursor_AddrLabelExpr                 = 120,
   1754 
   1755   /** \brief This is the GNU Statement Expression extension: ({int X=4; X;})
   1756    */
   1757   CXCursor_StmtExpr                      = 121,
   1758 
   1759   /** \brief Represents a C11 generic selection.
   1760    */
   1761   CXCursor_GenericSelectionExpr          = 122,
   1762 
   1763   /** \brief Implements the GNU __null extension, which is a name for a null
   1764    * pointer constant that has integral type (e.g., int or long) and is the same
   1765    * size and alignment as a pointer.
   1766    *
   1767    * The __null extension is typically only used by system headers, which define
   1768    * NULL as __null in C++ rather than using 0 (which is an integer that may not
   1769    * match the size of a pointer).
   1770    */
   1771   CXCursor_GNUNullExpr                   = 123,
   1772 
   1773   /** \brief C++'s static_cast<> expression.
   1774    */
   1775   CXCursor_CXXStaticCastExpr             = 124,
   1776 
   1777   /** \brief C++'s dynamic_cast<> expression.
   1778    */
   1779   CXCursor_CXXDynamicCastExpr            = 125,
   1780 
   1781   /** \brief C++'s reinterpret_cast<> expression.
   1782    */
   1783   CXCursor_CXXReinterpretCastExpr        = 126,
   1784 
   1785   /** \brief C++'s const_cast<> expression.
   1786    */
   1787   CXCursor_CXXConstCastExpr              = 127,
   1788 
   1789   /** \brief Represents an explicit C++ type conversion that uses "functional"
   1790    * notion (C++ [expr.type.conv]).
   1791    *
   1792    * Example:
   1793    * \code
   1794    *   x = int(0.5);
   1795    * \endcode
   1796    */
   1797   CXCursor_CXXFunctionalCastExpr         = 128,
   1798 
   1799   /** \brief A C++ typeid expression (C++ [expr.typeid]).
   1800    */
   1801   CXCursor_CXXTypeidExpr                 = 129,
   1802 
   1803   /** \brief [C++ 2.13.5] C++ Boolean Literal.
   1804    */
   1805   CXCursor_CXXBoolLiteralExpr            = 130,
   1806 
   1807   /** \brief [C++0x 2.14.7] C++ Pointer Literal.
   1808    */
   1809   CXCursor_CXXNullPtrLiteralExpr         = 131,
   1810 
   1811   /** \brief Represents the "this" expression in C++
   1812    */
   1813   CXCursor_CXXThisExpr                   = 132,
   1814 
   1815   /** \brief [C++ 15] C++ Throw Expression.
   1816    *
   1817    * This handles 'throw' and 'throw' assignment-expression. When
   1818    * assignment-expression isn't present, Op will be null.
   1819    */
   1820   CXCursor_CXXThrowExpr                  = 133,
   1821 
   1822   /** \brief A new expression for memory allocation and constructor calls, e.g:
   1823    * "new CXXNewExpr(foo)".
   1824    */
   1825   CXCursor_CXXNewExpr                    = 134,
   1826 
   1827   /** \brief A delete expression for memory deallocation and destructor calls,
   1828    * e.g. "delete[] pArray".
   1829    */
   1830   CXCursor_CXXDeleteExpr                 = 135,
   1831 
   1832   /** \brief A unary expression.
   1833    */
   1834   CXCursor_UnaryExpr                     = 136,
   1835 
   1836   /** \brief An Objective-C string literal i.e. @"foo".
   1837    */
   1838   CXCursor_ObjCStringLiteral             = 137,
   1839 
   1840   /** \brief An Objective-C \@encode expression.
   1841    */
   1842   CXCursor_ObjCEncodeExpr                = 138,
   1843 
   1844   /** \brief An Objective-C \@selector expression.
   1845    */
   1846   CXCursor_ObjCSelectorExpr              = 139,
   1847 
   1848   /** \brief An Objective-C \@protocol expression.
   1849    */
   1850   CXCursor_ObjCProtocolExpr              = 140,
   1851 
   1852   /** \brief An Objective-C "bridged" cast expression, which casts between
   1853    * Objective-C pointers and C pointers, transferring ownership in the process.
   1854    *
   1855    * \code
   1856    *   NSString *str = (__bridge_transfer NSString *)CFCreateString();
   1857    * \endcode
   1858    */
   1859   CXCursor_ObjCBridgedCastExpr           = 141,
   1860 
   1861   /** \brief Represents a C++0x pack expansion that produces a sequence of
   1862    * expressions.
   1863    *
   1864    * A pack expansion expression contains a pattern (which itself is an
   1865    * expression) followed by an ellipsis. For example:
   1866    *
   1867    * \code
   1868    * template<typename F, typename ...Types>
   1869    * void forward(F f, Types &&...args) {
   1870    *  f(static_cast<Types&&>(args)...);
   1871    * }
   1872    * \endcode
   1873    */
   1874   CXCursor_PackExpansionExpr             = 142,
   1875 
   1876   /** \brief Represents an expression that computes the length of a parameter
   1877    * pack.
   1878    *
   1879    * \code
   1880    * template<typename ...Types>
   1881    * struct count {
   1882    *   static const unsigned value = sizeof...(Types);
   1883    * };
   1884    * \endcode
   1885    */
   1886   CXCursor_SizeOfPackExpr                = 143,
   1887 
   1888   /* \brief Represents a C++ lambda expression that produces a local function
   1889    * object.
   1890    *
   1891    * \code
   1892    * void abssort(float *x, unsigned N) {
   1893    *   std::sort(x, x + N,
   1894    *             [](float a, float b) {
   1895    *               return std::abs(a) < std::abs(b);
   1896    *             });
   1897    * }
   1898    * \endcode
   1899    */
   1900   CXCursor_LambdaExpr                    = 144,
   1901 
   1902   /** \brief Objective-c Boolean Literal.
   1903    */
   1904   CXCursor_ObjCBoolLiteralExpr           = 145,
   1905 
   1906   /** \brief Represents the "self" expression in a ObjC method.
   1907    */
   1908   CXCursor_ObjCSelfExpr                  = 146,
   1909 
   1910   CXCursor_LastExpr                      = CXCursor_ObjCSelfExpr,
   1911 
   1912   /* Statements */
   1913   CXCursor_FirstStmt                     = 200,
   1914   /**
   1915    * \brief A statement whose specific kind is not exposed via this
   1916    * interface.
   1917    *
   1918    * Unexposed statements have the same operations as any other kind of
   1919    * statement; one can extract their location information, spelling,
   1920    * children, etc. However, the specific kind of the statement is not
   1921    * reported.
   1922    */
   1923   CXCursor_UnexposedStmt                 = 200,
   1924 
   1925   /** \brief A labelled statement in a function.
   1926    *
   1927    * This cursor kind is used to describe the "start_over:" label statement in
   1928    * the following example:
   1929    *
   1930    * \code
   1931    *   start_over:
   1932    *     ++counter;
   1933    * \endcode
   1934    *
   1935    */
   1936   CXCursor_LabelStmt                     = 201,
   1937 
   1938   /** \brief A group of statements like { stmt stmt }.
   1939    *
   1940    * This cursor kind is used to describe compound statements, e.g. function
   1941    * bodies.
   1942    */
   1943   CXCursor_CompoundStmt                  = 202,
   1944 
   1945   /** \brief A case statment.
   1946    */
   1947   CXCursor_CaseStmt                      = 203,
   1948 
   1949   /** \brief A default statement.
   1950    */
   1951   CXCursor_DefaultStmt                   = 204,
   1952 
   1953   /** \brief An if statement
   1954    */
   1955   CXCursor_IfStmt                        = 205,
   1956 
   1957   /** \brief A switch statement.
   1958    */
   1959   CXCursor_SwitchStmt                    = 206,
   1960 
   1961   /** \brief A while statement.
   1962    */
   1963   CXCursor_WhileStmt                     = 207,
   1964 
   1965   /** \brief A do statement.
   1966    */
   1967   CXCursor_DoStmt                        = 208,
   1968 
   1969   /** \brief A for statement.
   1970    */
   1971   CXCursor_ForStmt                       = 209,
   1972 
   1973   /** \brief A goto statement.
   1974    */
   1975   CXCursor_GotoStmt                      = 210,
   1976 
   1977   /** \brief An indirect goto statement.
   1978    */
   1979   CXCursor_IndirectGotoStmt              = 211,
   1980 
   1981   /** \brief A continue statement.
   1982    */
   1983   CXCursor_ContinueStmt                  = 212,
   1984 
   1985   /** \brief A break statement.
   1986    */
   1987   CXCursor_BreakStmt                     = 213,
   1988 
   1989   /** \brief A return statement.
   1990    */
   1991   CXCursor_ReturnStmt                    = 214,
   1992 
   1993   /** \brief A GCC inline assembly statement extension.
   1994    */
   1995   CXCursor_GCCAsmStmt                    = 215,
   1996   CXCursor_AsmStmt                       = CXCursor_GCCAsmStmt,
   1997 
   1998   /** \brief Objective-C's overall \@try-\@catch-\@finally statement.
   1999    */
   2000   CXCursor_ObjCAtTryStmt                 = 216,
   2001 
   2002   /** \brief Objective-C's \@catch statement.
   2003    */
   2004   CXCursor_ObjCAtCatchStmt               = 217,
   2005 
   2006   /** \brief Objective-C's \@finally statement.
   2007    */
   2008   CXCursor_ObjCAtFinallyStmt             = 218,
   2009 
   2010   /** \brief Objective-C's \@throw statement.
   2011    */
   2012   CXCursor_ObjCAtThrowStmt               = 219,
   2013 
   2014   /** \brief Objective-C's \@synchronized statement.
   2015    */
   2016   CXCursor_ObjCAtSynchronizedStmt        = 220,
   2017 
   2018   /** \brief Objective-C's autorelease pool statement.
   2019    */
   2020   CXCursor_ObjCAutoreleasePoolStmt       = 221,
   2021 
   2022   /** \brief Objective-C's collection statement.
   2023    */
   2024   CXCursor_ObjCForCollectionStmt         = 222,
   2025 
   2026   /** \brief C++'s catch statement.
   2027    */
   2028   CXCursor_CXXCatchStmt                  = 223,
   2029 
   2030   /** \brief C++'s try statement.
   2031    */
   2032   CXCursor_CXXTryStmt                    = 224,
   2033 
   2034   /** \brief C++'s for (* : *) statement.
   2035    */
   2036   CXCursor_CXXForRangeStmt               = 225,
   2037 
   2038   /** \brief Windows Structured Exception Handling's try statement.
   2039    */
   2040   CXCursor_SEHTryStmt                    = 226,
   2041 
   2042   /** \brief Windows Structured Exception Handling's except statement.
   2043    */
   2044   CXCursor_SEHExceptStmt                 = 227,
   2045 
   2046   /** \brief Windows Structured Exception Handling's finally statement.
   2047    */
   2048   CXCursor_SEHFinallyStmt                = 228,
   2049 
   2050   /** \brief A MS inline assembly statement extension.
   2051    */
   2052   CXCursor_MSAsmStmt                     = 229,
   2053 
   2054   /** \brief The null satement ";": C99 6.8.3p3.
   2055    *
   2056    * This cursor kind is used to describe the null statement.
   2057    */
   2058   CXCursor_NullStmt                      = 230,
   2059 
   2060   /** \brief Adaptor class for mixing declarations with statements and
   2061    * expressions.
   2062    */
   2063   CXCursor_DeclStmt                      = 231,
   2064 
   2065   /** \brief OpenMP parallel directive.
   2066    */
   2067   CXCursor_OMPParallelDirective          = 232,
   2068 
   2069   CXCursor_LastStmt                      = CXCursor_OMPParallelDirective,
   2070 
   2071   /**
   2072    * \brief Cursor that represents the translation unit itself.
   2073    *
   2074    * The translation unit cursor exists primarily to act as the root
   2075    * cursor for traversing the contents of a translation unit.
   2076    */
   2077   CXCursor_TranslationUnit               = 300,
   2078 
   2079   /* Attributes */
   2080   CXCursor_FirstAttr                     = 400,
   2081   /**
   2082    * \brief An attribute whose specific kind is not exposed via this
   2083    * interface.
   2084    */
   2085   CXCursor_UnexposedAttr                 = 400,
   2086 
   2087   CXCursor_IBActionAttr                  = 401,
   2088   CXCursor_IBOutletAttr                  = 402,
   2089   CXCursor_IBOutletCollectionAttr        = 403,
   2090   CXCursor_CXXFinalAttr                  = 404,
   2091   CXCursor_CXXOverrideAttr               = 405,
   2092   CXCursor_AnnotateAttr                  = 406,
   2093   CXCursor_AsmLabelAttr                  = 407,
   2094   CXCursor_LastAttr                      = CXCursor_AsmLabelAttr,
   2095 
   2096   /* Preprocessing */
   2097   CXCursor_PreprocessingDirective        = 500,
   2098   CXCursor_MacroDefinition               = 501,
   2099   CXCursor_MacroExpansion                = 502,
   2100   CXCursor_MacroInstantiation            = CXCursor_MacroExpansion,
   2101   CXCursor_InclusionDirective            = 503,
   2102   CXCursor_FirstPreprocessing            = CXCursor_PreprocessingDirective,
   2103   CXCursor_LastPreprocessing             = CXCursor_InclusionDirective,
   2104 
   2105   /* Extra Declarations */
   2106   /**
   2107    * \brief A module import declaration.
   2108    */
   2109   CXCursor_ModuleImportDecl              = 600,
   2110   CXCursor_FirstExtraDecl                = CXCursor_ModuleImportDecl,
   2111   CXCursor_LastExtraDecl                 = CXCursor_ModuleImportDecl
   2112 };
   2113 
   2114 /**
   2115  * \brief A cursor representing some element in the abstract syntax tree for
   2116  * a translation unit.
   2117  *
   2118  * The cursor abstraction unifies the different kinds of entities in a
   2119  * program--declaration, statements, expressions, references to declarations,
   2120  * etc.--under a single "cursor" abstraction with a common set of operations.
   2121  * Common operation for a cursor include: getting the physical location in
   2122  * a source file where the cursor points, getting the name associated with a
   2123  * cursor, and retrieving cursors for any child nodes of a particular cursor.
   2124  *
   2125  * Cursors can be produced in two specific ways.
   2126  * clang_getTranslationUnitCursor() produces a cursor for a translation unit,
   2127  * from which one can use clang_visitChildren() to explore the rest of the
   2128  * translation unit. clang_getCursor() maps from a physical source location
   2129  * to the entity that resides at that location, allowing one to map from the
   2130  * source code into the AST.
   2131  */
   2132 typedef struct {
   2133   enum CXCursorKind kind;
   2134   int xdata;
   2135   const void *data[3];
   2136 } CXCursor;
   2137 
   2138 /**
   2139  * \brief A comment AST node.
   2140  */
   2141 typedef struct {
   2142   const void *ASTNode;
   2143   CXTranslationUnit TranslationUnit;
   2144 } CXComment;
   2145 
   2146 /**
   2147  * \defgroup CINDEX_CURSOR_MANIP Cursor manipulations
   2148  *
   2149  * @{
   2150  */
   2151 
   2152 /**
   2153  * \brief Retrieve the NULL cursor, which represents no entity.
   2154  */
   2155 CINDEX_LINKAGE CXCursor clang_getNullCursor(void);
   2156 
   2157 /**
   2158  * \brief Retrieve the cursor that represents the given translation unit.
   2159  *
   2160  * The translation unit cursor can be used to start traversing the
   2161  * various declarations within the given translation unit.
   2162  */
   2163 CINDEX_LINKAGE CXCursor clang_getTranslationUnitCursor(CXTranslationUnit);
   2164 
   2165 /**
   2166  * \brief Determine whether two cursors are equivalent.
   2167  */
   2168 CINDEX_LINKAGE unsigned clang_equalCursors(CXCursor, CXCursor);
   2169 
   2170 /**
   2171  * \brief Returns non-zero if \p cursor is null.
   2172  */
   2173 CINDEX_LINKAGE int clang_Cursor_isNull(CXCursor cursor);
   2174 
   2175 /**
   2176  * \brief Compute a hash value for the given cursor.
   2177  */
   2178 CINDEX_LINKAGE unsigned clang_hashCursor(CXCursor);
   2179 
   2180 /**
   2181  * \brief Retrieve the kind of the given cursor.
   2182  */
   2183 CINDEX_LINKAGE enum CXCursorKind clang_getCursorKind(CXCursor);
   2184 
   2185 /**
   2186  * \brief Determine whether the given cursor kind represents a declaration.
   2187  */
   2188 CINDEX_LINKAGE unsigned clang_isDeclaration(enum CXCursorKind);
   2189 
   2190 /**
   2191  * \brief Determine whether the given cursor kind represents a simple
   2192  * reference.
   2193  *
   2194  * Note that other kinds of cursors (such as expressions) can also refer to
   2195  * other cursors. Use clang_getCursorReferenced() to determine whether a
   2196  * particular cursor refers to another entity.
   2197  */
   2198 CINDEX_LINKAGE unsigned clang_isReference(enum CXCursorKind);
   2199 
   2200 /**
   2201  * \brief Determine whether the given cursor kind represents an expression.
   2202  */
   2203 CINDEX_LINKAGE unsigned clang_isExpression(enum CXCursorKind);
   2204 
   2205 /**
   2206  * \brief Determine whether the given cursor kind represents a statement.
   2207  */
   2208 CINDEX_LINKAGE unsigned clang_isStatement(enum CXCursorKind);
   2209 
   2210 /**
   2211  * \brief Determine whether the given cursor kind represents an attribute.
   2212  */
   2213 CINDEX_LINKAGE unsigned clang_isAttribute(enum CXCursorKind);
   2214 
   2215 /**
   2216  * \brief Determine whether the given cursor kind represents an invalid
   2217  * cursor.
   2218  */
   2219 CINDEX_LINKAGE unsigned clang_isInvalid(enum CXCursorKind);
   2220 
   2221 /**
   2222  * \brief Determine whether the given cursor kind represents a translation
   2223  * unit.
   2224  */
   2225 CINDEX_LINKAGE unsigned clang_isTranslationUnit(enum CXCursorKind);
   2226 
   2227 /***
   2228  * \brief Determine whether the given cursor represents a preprocessing
   2229  * element, such as a preprocessor directive or macro instantiation.
   2230  */
   2231 CINDEX_LINKAGE unsigned clang_isPreprocessing(enum CXCursorKind);
   2232 
   2233 /***
   2234  * \brief Determine whether the given cursor represents a currently
   2235  *  unexposed piece of the AST (e.g., CXCursor_UnexposedStmt).
   2236  */
   2237 CINDEX_LINKAGE unsigned clang_isUnexposed(enum CXCursorKind);
   2238 
   2239 /**
   2240  * \brief Describe the linkage of the entity referred to by a cursor.
   2241  */
   2242 enum CXLinkageKind {
   2243   /** \brief This value indicates that no linkage information is available
   2244    * for a provided CXCursor. */
   2245   CXLinkage_Invalid,
   2246   /**
   2247    * \brief This is the linkage for variables, parameters, and so on that
   2248    *  have automatic storage.  This covers normal (non-extern) local variables.
   2249    */
   2250   CXLinkage_NoLinkage,
   2251   /** \brief This is the linkage for static variables and static functions. */
   2252   CXLinkage_Internal,
   2253   /** \brief This is the linkage for entities with external linkage that live
   2254    * in C++ anonymous namespaces.*/
   2255   CXLinkage_UniqueExternal,
   2256   /** \brief This is the linkage for entities with true, external linkage. */
   2257   CXLinkage_External
   2258 };
   2259 
   2260 /**
   2261  * \brief Determine the linkage of the entity referred to by a given cursor.
   2262  */
   2263 CINDEX_LINKAGE enum CXLinkageKind clang_getCursorLinkage(CXCursor cursor);
   2264 
   2265 /**
   2266  * \brief Determine the availability of the entity that this cursor refers to,
   2267  * taking the current target platform into account.
   2268  *
   2269  * \param cursor The cursor to query.
   2270  *
   2271  * \returns The availability of the cursor.
   2272  */
   2273 CINDEX_LINKAGE enum CXAvailabilityKind
   2274 clang_getCursorAvailability(CXCursor cursor);
   2275 
   2276 /**
   2277  * Describes the availability of a given entity on a particular platform, e.g.,
   2278  * a particular class might only be available on Mac OS 10.7 or newer.
   2279  */
   2280 typedef struct CXPlatformAvailability {
   2281   /**
   2282    * \brief A string that describes the platform for which this structure
   2283    * provides availability information.
   2284    *
   2285    * Possible values are "ios" or "macosx".
   2286    */
   2287   CXString Platform;
   2288   /**
   2289    * \brief The version number in which this entity was introduced.
   2290    */
   2291   CXVersion Introduced;
   2292   /**
   2293    * \brief The version number in which this entity was deprecated (but is
   2294    * still available).
   2295    */
   2296   CXVersion Deprecated;
   2297   /**
   2298    * \brief The version number in which this entity was obsoleted, and therefore
   2299    * is no longer available.
   2300    */
   2301   CXVersion Obsoleted;
   2302   /**
   2303    * \brief Whether the entity is unconditionally unavailable on this platform.
   2304    */
   2305   int Unavailable;
   2306   /**
   2307    * \brief An optional message to provide to a user of this API, e.g., to
   2308    * suggest replacement APIs.
   2309    */
   2310   CXString Message;
   2311 } CXPlatformAvailability;
   2312 
   2313 /**
   2314  * \brief Determine the availability of the entity that this cursor refers to
   2315  * on any platforms for which availability information is known.
   2316  *
   2317  * \param cursor The cursor to query.
   2318  *
   2319  * \param always_deprecated If non-NULL, will be set to indicate whether the
   2320  * entity is deprecated on all platforms.
   2321  *
   2322  * \param deprecated_message If non-NULL, will be set to the message text
   2323  * provided along with the unconditional deprecation of this entity. The client
   2324  * is responsible for deallocating this string.
   2325  *
   2326  * \param always_unavailable If non-NULL, will be set to indicate whether the
   2327  * entity is unavailable on all platforms.
   2328  *
   2329  * \param unavailable_message If non-NULL, will be set to the message text
   2330  * provided along with the unconditional unavailability of this entity. The
   2331  * client is responsible for deallocating this string.
   2332  *
   2333  * \param availability If non-NULL, an array of CXPlatformAvailability instances
   2334  * that will be populated with platform availability information, up to either
   2335  * the number of platforms for which availability information is available (as
   2336  * returned by this function) or \c availability_size, whichever is smaller.
   2337  *
   2338  * \param availability_size The number of elements available in the
   2339  * \c availability array.
   2340  *
   2341  * \returns The number of platforms (N) for which availability information is
   2342  * available (which is unrelated to \c availability_size).
   2343  *
   2344  * Note that the client is responsible for calling
   2345  * \c clang_disposeCXPlatformAvailability to free each of the
   2346  * platform-availability structures returned. There are
   2347  * \c min(N, availability_size) such structures.
   2348  */
   2349 CINDEX_LINKAGE int
   2350 clang_getCursorPlatformAvailability(CXCursor cursor,
   2351                                     int *always_deprecated,
   2352                                     CXString *deprecated_message,
   2353                                     int *always_unavailable,
   2354                                     CXString *unavailable_message,
   2355                                     CXPlatformAvailability *availability,
   2356                                     int availability_size);
   2357 
   2358 /**
   2359  * \brief Free the memory associated with a \c CXPlatformAvailability structure.
   2360  */
   2361 CINDEX_LINKAGE void
   2362 clang_disposeCXPlatformAvailability(CXPlatformAvailability *availability);
   2363 
   2364 /**
   2365  * \brief Describe the "language" of the entity referred to by a cursor.
   2366  */
   2367 CINDEX_LINKAGE enum CXLanguageKind {
   2368   CXLanguage_Invalid = 0,
   2369   CXLanguage_C,
   2370   CXLanguage_ObjC,
   2371   CXLanguage_CPlusPlus
   2372 };
   2373 
   2374 /**
   2375  * \brief Determine the "language" of the entity referred to by a given cursor.
   2376  */
   2377 CINDEX_LINKAGE enum CXLanguageKind clang_getCursorLanguage(CXCursor cursor);
   2378 
   2379 /**
   2380  * \brief Returns the translation unit that a cursor originated from.
   2381  */
   2382 CINDEX_LINKAGE CXTranslationUnit clang_Cursor_getTranslationUnit(CXCursor);
   2383 
   2384 
   2385 /**
   2386  * \brief A fast container representing a set of CXCursors.
   2387  */
   2388 typedef struct CXCursorSetImpl *CXCursorSet;
   2389 
   2390 /**
   2391  * \brief Creates an empty CXCursorSet.
   2392  */
   2393 CINDEX_LINKAGE CXCursorSet clang_createCXCursorSet(void);
   2394 
   2395 /**
   2396  * \brief Disposes a CXCursorSet and releases its associated memory.
   2397  */
   2398 CINDEX_LINKAGE void clang_disposeCXCursorSet(CXCursorSet cset);
   2399 
   2400 /**
   2401  * \brief Queries a CXCursorSet to see if it contains a specific CXCursor.
   2402  *
   2403  * \returns non-zero if the set contains the specified cursor.
   2404 */
   2405 CINDEX_LINKAGE unsigned clang_CXCursorSet_contains(CXCursorSet cset,
   2406                                                    CXCursor cursor);
   2407 
   2408 /**
   2409  * \brief Inserts a CXCursor into a CXCursorSet.
   2410  *
   2411  * \returns zero if the CXCursor was already in the set, and non-zero otherwise.
   2412 */
   2413 CINDEX_LINKAGE unsigned clang_CXCursorSet_insert(CXCursorSet cset,
   2414                                                  CXCursor cursor);
   2415 
   2416 /**
   2417  * \brief Determine the semantic parent of the given cursor.
   2418  *
   2419  * The semantic parent of a cursor is the cursor that semantically contains
   2420  * the given \p cursor. For many declarations, the lexical and semantic parents
   2421  * are equivalent (the lexical parent is returned by
   2422  * \c clang_getCursorLexicalParent()). They diverge when declarations or
   2423  * definitions are provided out-of-line. For example:
   2424  *
   2425  * \code
   2426  * class C {
   2427  *  void f();
   2428  * };
   2429  *
   2430  * void C::f() { }
   2431  * \endcode
   2432  *
   2433  * In the out-of-line definition of \c C::f, the semantic parent is the
   2434  * the class \c C, of which this function is a member. The lexical parent is
   2435  * the place where the declaration actually occurs in the source code; in this
   2436  * case, the definition occurs in the translation unit. In general, the
   2437  * lexical parent for a given entity can change without affecting the semantics
   2438  * of the program, and the lexical parent of different declarations of the
   2439  * same entity may be different. Changing the semantic parent of a declaration,
   2440  * on the other hand, can have a major impact on semantics, and redeclarations
   2441  * of a particular entity should all have the same semantic context.
   2442  *
   2443  * In the example above, both declarations of \c C::f have \c C as their
   2444  * semantic context, while the lexical context of the first \c C::f is \c C
   2445  * and the lexical context of the second \c C::f is the translation unit.
   2446  *
   2447  * For global declarations, the semantic parent is the translation unit.
   2448  */
   2449 CINDEX_LINKAGE CXCursor clang_getCursorSemanticParent(CXCursor cursor);
   2450 
   2451 /**
   2452  * \brief Determine the lexical parent of the given cursor.
   2453  *
   2454  * The lexical parent of a cursor is the cursor in which the given \p cursor
   2455  * was actually written. For many declarations, the lexical and semantic parents
   2456  * are equivalent (the semantic parent is returned by
   2457  * \c clang_getCursorSemanticParent()). They diverge when declarations or
   2458  * definitions are provided out-of-line. For example:
   2459  *
   2460  * \code
   2461  * class C {
   2462  *  void f();
   2463  * };
   2464  *
   2465  * void C::f() { }
   2466  * \endcode
   2467  *
   2468  * In the out-of-line definition of \c C::f, the semantic parent is the
   2469  * the class \c C, of which this function is a member. The lexical parent is
   2470  * the place where the declaration actually occurs in the source code; in this
   2471  * case, the definition occurs in the translation unit. In general, the
   2472  * lexical parent for a given entity can change without affecting the semantics
   2473  * of the program, and the lexical parent of different declarations of the
   2474  * same entity may be different. Changing the semantic parent of a declaration,
   2475  * on the other hand, can have a major impact on semantics, and redeclarations
   2476  * of a particular entity should all have the same semantic context.
   2477  *
   2478  * In the example above, both declarations of \c C::f have \c C as their
   2479  * semantic context, while the lexical context of the first \c C::f is \c C
   2480  * and the lexical context of the second \c C::f is the translation unit.
   2481  *
   2482  * For declarations written in the global scope, the lexical parent is
   2483  * the translation unit.
   2484  */
   2485 CINDEX_LINKAGE CXCursor clang_getCursorLexicalParent(CXCursor cursor);
   2486 
   2487 /**
   2488  * \brief Determine the set of methods that are overridden by the given
   2489  * method.
   2490  *
   2491  * In both Objective-C and C++, a method (aka virtual member function,
   2492  * in C++) can override a virtual method in a base class. For
   2493  * Objective-C, a method is said to override any method in the class's
   2494  * base class, its protocols, or its categories' protocols, that has the same
   2495  * selector and is of the same kind (class or instance).
   2496  * If no such method exists, the search continues to the class's superclass,
   2497  * its protocols, and its categories, and so on. A method from an Objective-C
   2498  * implementation is considered to override the same methods as its
   2499  * corresponding method in the interface.
   2500  *
   2501  * For C++, a virtual member function overrides any virtual member
   2502  * function with the same signature that occurs in its base
   2503  * classes. With multiple inheritance, a virtual member function can
   2504  * override several virtual member functions coming from different
   2505  * base classes.
   2506  *
   2507  * In all cases, this function determines the immediate overridden
   2508  * method, rather than all of the overridden methods. For example, if
   2509  * a method is originally declared in a class A, then overridden in B
   2510  * (which in inherits from A) and also in C (which inherited from B),
   2511  * then the only overridden method returned from this function when
   2512  * invoked on C's method will be B's method. The client may then
   2513  * invoke this function again, given the previously-found overridden
   2514  * methods, to map out the complete method-override set.
   2515  *
   2516  * \param cursor A cursor representing an Objective-C or C++
   2517  * method. This routine will compute the set of methods that this
   2518  * method overrides.
   2519  *
   2520  * \param overridden A pointer whose pointee will be replaced with a
   2521  * pointer to an array of cursors, representing the set of overridden
   2522  * methods. If there are no overridden methods, the pointee will be
   2523  * set to NULL. The pointee must be freed via a call to
   2524  * \c clang_disposeOverriddenCursors().
   2525  *
   2526  * \param num_overridden A pointer to the number of overridden
   2527  * functions, will be set to the number of overridden functions in the
   2528  * array pointed to by \p overridden.
   2529  */
   2530 CINDEX_LINKAGE void clang_getOverriddenCursors(CXCursor cursor,
   2531                                                CXCursor **overridden,
   2532                                                unsigned *num_overridden);
   2533 
   2534 /**
   2535  * \brief Free the set of overridden cursors returned by \c
   2536  * clang_getOverriddenCursors().
   2537  */
   2538 CINDEX_LINKAGE void clang_disposeOverriddenCursors(CXCursor *overridden);
   2539 
   2540 /**
   2541  * \brief Retrieve the file that is included by the given inclusion directive
   2542  * cursor.
   2543  */
   2544 CINDEX_LINKAGE CXFile clang_getIncludedFile(CXCursor cursor);
   2545 
   2546 /**
   2547  * @}
   2548  */
   2549 
   2550 /**
   2551  * \defgroup CINDEX_CURSOR_SOURCE Mapping between cursors and source code
   2552  *
   2553  * Cursors represent a location within the Abstract Syntax Tree (AST). These
   2554  * routines help map between cursors and the physical locations where the
   2555  * described entities occur in the source code. The mapping is provided in
   2556  * both directions, so one can map from source code to the AST and back.
   2557  *
   2558  * @{
   2559  */
   2560 
   2561 /**
   2562  * \brief Map a source location to the cursor that describes the entity at that
   2563  * location in the source code.
   2564  *
   2565  * clang_getCursor() maps an arbitrary source location within a translation
   2566  * unit down to the most specific cursor that describes the entity at that
   2567  * location. For example, given an expression \c x + y, invoking
   2568  * clang_getCursor() with a source location pointing to "x" will return the
   2569  * cursor for "x"; similarly for "y". If the cursor points anywhere between
   2570  * "x" or "y" (e.g., on the + or the whitespace around it), clang_getCursor()
   2571  * will return a cursor referring to the "+" expression.
   2572  *
   2573  * \returns a cursor representing the entity at the given source location, or
   2574  * a NULL cursor if no such entity can be found.
   2575  */
   2576 CINDEX_LINKAGE CXCursor clang_getCursor(CXTranslationUnit, CXSourceLocation);
   2577 
   2578 /**
   2579  * \brief Retrieve the physical location of the source constructor referenced
   2580  * by the given cursor.
   2581  *
   2582  * The location of a declaration is typically the location of the name of that
   2583  * declaration, where the name of that declaration would occur if it is
   2584  * unnamed, or some keyword that introduces that particular declaration.
   2585  * The location of a reference is where that reference occurs within the
   2586  * source code.
   2587  */
   2588 CINDEX_LINKAGE CXSourceLocation clang_getCursorLocation(CXCursor);
   2589 
   2590 /**
   2591  * \brief Retrieve the physical extent of the source construct referenced by
   2592  * the given cursor.
   2593  *
   2594  * The extent of a cursor starts with the file/line/column pointing at the
   2595  * first character within the source construct that the cursor refers to and
   2596  * ends with the last character withinin that source construct. For a
   2597  * declaration, the extent covers the declaration itself. For a reference,
   2598  * the extent covers the location of the reference (e.g., where the referenced
   2599  * entity was actually used).
   2600  */
   2601 CINDEX_LINKAGE CXSourceRange clang_getCursorExtent(CXCursor);
   2602 
   2603 /**
   2604  * @}
   2605  */
   2606 
   2607 /**
   2608  * \defgroup CINDEX_TYPES Type information for CXCursors
   2609  *
   2610  * @{
   2611  */
   2612 
   2613 /**
   2614  * \brief Describes the kind of type
   2615  */
   2616 enum CXTypeKind {
   2617   /**
   2618    * \brief Reprents an invalid type (e.g., where no type is available).
   2619    */
   2620   CXType_Invalid = 0,
   2621 
   2622   /**
   2623    * \brief A type whose specific kind is not exposed via this
   2624    * interface.
   2625    */
   2626   CXType_Unexposed = 1,
   2627 
   2628   /* Builtin types */
   2629   CXType_Void = 2,
   2630   CXType_Bool = 3,
   2631   CXType_Char_U = 4,
   2632   CXType_UChar = 5,
   2633   CXType_Char16 = 6,
   2634   CXType_Char32 = 7,
   2635   CXType_UShort = 8,
   2636   CXType_UInt = 9,
   2637   CXType_ULong = 10,
   2638   CXType_ULongLong = 11,
   2639   CXType_UInt128 = 12,
   2640   CXType_Char_S = 13,
   2641   CXType_SChar = 14,
   2642   CXType_WChar = 15,
   2643   CXType_Short = 16,
   2644   CXType_Int = 17,
   2645   CXType_Long = 18,
   2646   CXType_LongLong = 19,
   2647   CXType_Int128 = 20,
   2648   CXType_Float = 21,
   2649   CXType_Double = 22,
   2650   CXType_LongDouble = 23,
   2651   CXType_NullPtr = 24,
   2652   CXType_Overload = 25,
   2653   CXType_Dependent = 26,
   2654   CXType_ObjCId = 27,
   2655   CXType_ObjCClass = 28,
   2656   CXType_ObjCSel = 29,
   2657   CXType_FirstBuiltin = CXType_Void,
   2658   CXType_LastBuiltin  = CXType_ObjCSel,
   2659 
   2660   CXType_Complex = 100,
   2661   CXType_Pointer = 101,
   2662   CXType_BlockPointer = 102,
   2663   CXType_LValueReference = 103,
   2664   CXType_RValueReference = 104,
   2665   CXType_Record = 105,
   2666   CXType_Enum = 106,
   2667   CXType_Typedef = 107,
   2668   CXType_ObjCInterface = 108,
   2669   CXType_ObjCObjectPointer = 109,
   2670   CXType_FunctionNoProto = 110,
   2671   CXType_FunctionProto = 111,
   2672   CXType_ConstantArray = 112,
   2673   CXType_Vector = 113,
   2674   CXType_IncompleteArray = 114,
   2675   CXType_VariableArray = 115,
   2676   CXType_DependentSizedArray = 116
   2677 };
   2678 
   2679 /**
   2680  * \brief Describes the calling convention of a function type
   2681  */
   2682 enum CXCallingConv {
   2683   CXCallingConv_Default = 0,
   2684   CXCallingConv_C = 1,
   2685   CXCallingConv_X86StdCall = 2,
   2686   CXCallingConv_X86FastCall = 3,
   2687   CXCallingConv_X86ThisCall = 4,
   2688   CXCallingConv_X86Pascal = 5,
   2689   CXCallingConv_AAPCS = 6,
   2690   CXCallingConv_AAPCS_VFP = 7,
   2691   CXCallingConv_PnaclCall = 8,
   2692   CXCallingConv_IntelOclBicc = 9,
   2693 
   2694   CXCallingConv_Invalid = 100,
   2695   CXCallingConv_Unexposed = 200
   2696 };
   2697 
   2698 
   2699 /**
   2700  * \brief The type of an element in the abstract syntax tree.
   2701  *
   2702  */
   2703 typedef struct {
   2704   enum CXTypeKind kind;
   2705   void *data[2];
   2706 } CXType;
   2707 
   2708 /**
   2709  * \brief Retrieve the type of a CXCursor (if any).
   2710  */
   2711 CINDEX_LINKAGE CXType clang_getCursorType(CXCursor C);
   2712 
   2713 /**
   2714  * \brief Pretty-print the underlying type using the rules of the
   2715  * language of the translation unit from which it came.
   2716  *
   2717  * If the type is invalid, an empty string is returned.
   2718  */
   2719 CINDEX_LINKAGE CXString clang_getTypeSpelling(CXType CT);
   2720 
   2721 /**
   2722  * \brief Retrieve the underlying type of a typedef declaration.
   2723  *
   2724  * If the cursor does not reference a typedef declaration, an invalid type is
   2725  * returned.
   2726  */
   2727 CINDEX_LINKAGE CXType clang_getTypedefDeclUnderlyingType(CXCursor C);
   2728 
   2729 /**
   2730  * \brief Retrieve the integer type of an enum declaration.
   2731  *
   2732  * If the cursor does not reference an enum declaration, an invalid type is
   2733  * returned.
   2734  */
   2735 CINDEX_LINKAGE CXType clang_getEnumDeclIntegerType(CXCursor C);
   2736 
   2737 /**
   2738  * \brief Retrieve the integer value of an enum constant declaration as a signed
   2739  *  long long.
   2740  *
   2741  * If the cursor does not reference an enum constant declaration, LLONG_MIN is returned.
   2742  * Since this is also potentially a valid constant value, the kind of the cursor
   2743  * must be verified before calling this function.
   2744  */
   2745 CINDEX_LINKAGE long long clang_getEnumConstantDeclValue(CXCursor C);
   2746 
   2747 /**
   2748  * \brief Retrieve the integer value of an enum constant declaration as an unsigned
   2749  *  long long.
   2750  *
   2751  * If the cursor does not reference an enum constant declaration, ULLONG_MAX is returned.
   2752  * Since this is also potentially a valid constant value, the kind of the cursor
   2753  * must be verified before calling this function.
   2754  */
   2755 CINDEX_LINKAGE unsigned long long clang_getEnumConstantDeclUnsignedValue(CXCursor C);
   2756 
   2757 /**
   2758  * \brief Retrieve the bit width of a bit field declaration as an integer.
   2759  *
   2760  * If a cursor that is not a bit field declaration is passed in, -1 is returned.
   2761  */
   2762 CINDEX_LINKAGE int clang_getFieldDeclBitWidth(CXCursor C);
   2763 
   2764 /**
   2765  * \brief Retrieve the number of non-variadic arguments associated with a given
   2766  * cursor.
   2767  *
   2768  * The number of arguments can be determined for calls as well as for
   2769  * declarations of functions or methods. For other cursors -1 is returned.
   2770  */
   2771 CINDEX_LINKAGE int clang_Cursor_getNumArguments(CXCursor C);
   2772 
   2773 /**
   2774  * \brief Retrieve the argument cursor of a function or method.
   2775  *
   2776  * The argument cursor can be determined for calls as well as for declarations
   2777  * of functions or methods. For other cursors and for invalid indices, an
   2778  * invalid cursor is returned.
   2779  */
   2780 CINDEX_LINKAGE CXCursor clang_Cursor_getArgument(CXCursor C, unsigned i);
   2781 
   2782 /**
   2783  * \brief Determine whether two CXTypes represent the same type.
   2784  *
   2785  * \returns non-zero if the CXTypes represent the same type and
   2786  *          zero otherwise.
   2787  */
   2788 CINDEX_LINKAGE unsigned clang_equalTypes(CXType A, CXType B);
   2789 
   2790 /**
   2791  * \brief Return the canonical type for a CXType.
   2792  *
   2793  * Clang's type system explicitly models typedefs and all the ways
   2794  * a specific type can be represented.  The canonical type is the underlying
   2795  * type with all the "sugar" removed.  For example, if 'T' is a typedef
   2796  * for 'int', the canonical type for 'T' would be 'int'.
   2797  */
   2798 CINDEX_LINKAGE CXType clang_getCanonicalType(CXType T);
   2799 
   2800 /**
   2801  * \brief Determine whether a CXType has the "const" qualifier set,
   2802  * without looking through typedefs that may have added "const" at a
   2803  * different level.
   2804  */
   2805 CINDEX_LINKAGE unsigned clang_isConstQualifiedType(CXType T);
   2806 
   2807 /**
   2808  * \brief Determine whether a CXType has the "volatile" qualifier set,
   2809  * without looking through typedefs that may have added "volatile" at
   2810  * a different level.
   2811  */
   2812 CINDEX_LINKAGE unsigned clang_isVolatileQualifiedType(CXType T);
   2813 
   2814 /**
   2815  * \brief Determine whether a CXType has the "restrict" qualifier set,
   2816  * without looking through typedefs that may have added "restrict" at a
   2817  * different level.
   2818  */
   2819 CINDEX_LINKAGE unsigned clang_isRestrictQualifiedType(CXType T);
   2820 
   2821 /**
   2822  * \brief For pointer types, returns the type of the pointee.
   2823  */
   2824 CINDEX_LINKAGE CXType clang_getPointeeType(CXType T);
   2825 
   2826 /**
   2827  * \brief Return the cursor for the declaration of the given type.
   2828  */
   2829 CINDEX_LINKAGE CXCursor clang_getTypeDeclaration(CXType T);
   2830 
   2831 /**
   2832  * Returns the Objective-C type encoding for the specified declaration.
   2833  */
   2834 CINDEX_LINKAGE CXString clang_getDeclObjCTypeEncoding(CXCursor C);
   2835 
   2836 /**
   2837  * \brief Retrieve the spelling of a given CXTypeKind.
   2838  */
   2839 CINDEX_LINKAGE CXString clang_getTypeKindSpelling(enum CXTypeKind K);
   2840 
   2841 /**
   2842  * \brief Retrieve the calling convention associated with a function type.
   2843  *
   2844  * If a non-function type is passed in, CXCallingConv_Invalid is returned.
   2845  */
   2846 CINDEX_LINKAGE enum CXCallingConv clang_getFunctionTypeCallingConv(CXType T);
   2847 
   2848 /**
   2849  * \brief Retrieve the result type associated with a function type.
   2850  *
   2851  * If a non-function type is passed in, an invalid type is returned.
   2852  */
   2853 CINDEX_LINKAGE CXType clang_getResultType(CXType T);
   2854 
   2855 /**
   2856  * \brief Retrieve the number of non-variadic arguments associated with a
   2857  * function type.
   2858  *
   2859  * If a non-function type is passed in, -1 is returned.
   2860  */
   2861 CINDEX_LINKAGE int clang_getNumArgTypes(CXType T);
   2862 
   2863 /**
   2864  * \brief Retrieve the type of an argument of a function type.
   2865  *
   2866  * If a non-function type is passed in or the function does not have enough
   2867  * parameters, an invalid type is returned.
   2868  */
   2869 CINDEX_LINKAGE CXType clang_getArgType(CXType T, unsigned i);
   2870 
   2871 /**
   2872  * \brief Return 1 if the CXType is a variadic function type, and 0 otherwise.
   2873  */
   2874 CINDEX_LINKAGE unsigned clang_isFunctionTypeVariadic(CXType T);
   2875 
   2876 /**
   2877  * \brief Retrieve the result type associated with a given cursor.
   2878  *
   2879  * This only returns a valid type if the cursor refers to a function or method.
   2880  */
   2881 CINDEX_LINKAGE CXType clang_getCursorResultType(CXCursor C);
   2882 
   2883 /**
   2884  * \brief Return 1 if the CXType is a POD (plain old data) type, and 0
   2885  *  otherwise.
   2886  */
   2887 CINDEX_LINKAGE unsigned clang_isPODType(CXType T);
   2888 
   2889 /**
   2890  * \brief Return the element type of an array, complex, or vector type.
   2891  *
   2892  * If a type is passed in that is not an array, complex, or vector type,
   2893  * an invalid type is returned.
   2894  */
   2895 CINDEX_LINKAGE CXType clang_getElementType(CXType T);
   2896 
   2897 /**
   2898  * \brief Return the number of elements of an array or vector type.
   2899  *
   2900  * If a type is passed in that is not an array or vector type,
   2901  * -1 is returned.
   2902  */
   2903 CINDEX_LINKAGE long long clang_getNumElements(CXType T);
   2904 
   2905 /**
   2906  * \brief Return the element type of an array type.
   2907  *
   2908  * If a non-array type is passed in, an invalid type is returned.
   2909  */
   2910 CINDEX_LINKAGE CXType clang_getArrayElementType(CXType T);
   2911 
   2912 /**
   2913  * \brief Return the array size of a constant array.
   2914  *
   2915  * If a non-array type is passed in, -1 is returned.
   2916  */
   2917 CINDEX_LINKAGE long long clang_getArraySize(CXType T);
   2918 
   2919 /**
   2920  * \brief List the possible error codes for \c clang_Type_getSizeOf,
   2921  *   \c clang_Type_getAlignOf, \c clang_Type_getOffsetOf and
   2922  *   \c clang_Cursor_getOffsetOf.
   2923  *
   2924  * A value of this enumeration type can be returned if the target type is not
   2925  * a valid argument to sizeof, alignof or offsetof.
   2926  */
   2927 enum CXTypeLayoutError {
   2928   /**
   2929    * \brief Type is of kind CXType_Invalid.
   2930    */
   2931   CXTypeLayoutError_Invalid = -1,
   2932   /**
   2933    * \brief The type is an incomplete Type.
   2934    */
   2935   CXTypeLayoutError_Incomplete = -2,
   2936   /**
   2937    * \brief The type is a dependent Type.
   2938    */
   2939   CXTypeLayoutError_Dependent = -3,
   2940   /**
   2941    * \brief The type is not a constant size type.
   2942    */
   2943   CXTypeLayoutError_NotConstantSize = -4,
   2944   /**
   2945    * \brief The Field name is not valid for this record.
   2946    */
   2947   CXTypeLayoutError_InvalidFieldName = -5
   2948 };
   2949 
   2950 /**
   2951  * \brief Return the alignment of a type in bytes as per C++[expr.alignof]
   2952  *   standard.
   2953  *
   2954  * If the type declaration is invalid, CXTypeLayoutError_Invalid is returned.
   2955  * If the type declaration is an incomplete type, CXTypeLayoutError_Incomplete
   2956  *   is returned.
   2957  * If the type declaration is a dependent type, CXTypeLayoutError_Dependent is
   2958  *   returned.
   2959  * If the type declaration is not a constant size type,
   2960  *   CXTypeLayoutError_NotConstantSize is returned.
   2961  */
   2962 CINDEX_LINKAGE long long clang_Type_getAlignOf(CXType T);
   2963 
   2964 /**
   2965  * \brief Return the size of a type in bytes as per C++[expr.sizeof] standard.
   2966  *
   2967  * If the type declaration is invalid, CXTypeLayoutError_Invalid is returned.
   2968  * If the type declaration is an incomplete type, CXTypeLayoutError_Incomplete
   2969  *   is returned.
   2970  * If the type declaration is a dependent type, CXTypeLayoutError_Dependent is
   2971  *   returned.
   2972  */
   2973 CINDEX_LINKAGE long long clang_Type_getSizeOf(CXType T);
   2974 
   2975 /**
   2976  * \brief Return the offset of a field named S in a record of type T in bits
   2977  *   as it would be returned by __offsetof__ as per C++11[18.2p4]
   2978  *
   2979  * If the cursor is not a record field declaration, CXTypeLayoutError_Invalid
   2980  *   is returned.
   2981  * If the field's type declaration is an incomplete type,
   2982  *   CXTypeLayoutError_Incomplete is returned.
   2983  * If the field's type declaration is a dependent type,
   2984  *   CXTypeLayoutError_Dependent is returned.
   2985  * If the field's name S is not found,
   2986  *   CXTypeLayoutError_InvalidFieldName is returned.
   2987  */
   2988 CINDEX_LINKAGE long long clang_Type_getOffsetOf(CXType T, const char *S);
   2989 
   2990 /**
   2991  * \brief Returns non-zero if the cursor specifies a Record member that is a
   2992  *   bitfield.
   2993  */
   2994 CINDEX_LINKAGE unsigned clang_Cursor_isBitField(CXCursor C);
   2995 
   2996 /**
   2997  * \brief Returns 1 if the base class specified by the cursor with kind
   2998  *   CX_CXXBaseSpecifier is virtual.
   2999  */
   3000 CINDEX_LINKAGE unsigned clang_isVirtualBase(CXCursor);
   3001 
   3002 /**
   3003  * \brief Represents the C++ access control level to a base class for a
   3004  * cursor with kind CX_CXXBaseSpecifier.
   3005  */
   3006 enum CX_CXXAccessSpecifier {
   3007   CX_CXXInvalidAccessSpecifier,
   3008   CX_CXXPublic,
   3009   CX_CXXProtected,
   3010   CX_CXXPrivate
   3011 };
   3012 
   3013 /**
   3014  * \brief Returns the access control level for the referenced object.
   3015  *
   3016  * If the cursor refers to a C++ declaration, its access control level within its
   3017  * parent scope is returned. Otherwise, if the cursor refers to a base specifier or
   3018  * access specifier, the specifier itself is returned.
   3019  */
   3020 CINDEX_LINKAGE enum CX_CXXAccessSpecifier clang_getCXXAccessSpecifier(CXCursor);
   3021 
   3022 /**
   3023  * \brief Determine the number of overloaded declarations referenced by a
   3024  * \c CXCursor_OverloadedDeclRef cursor.
   3025  *
   3026  * \param cursor The cursor whose overloaded declarations are being queried.
   3027  *
   3028  * \returns The number of overloaded declarations referenced by \c cursor. If it
   3029  * is not a \c CXCursor_OverloadedDeclRef cursor, returns 0.
   3030  */
   3031 CINDEX_LINKAGE unsigned clang_getNumOverloadedDecls(CXCursor cursor);
   3032 
   3033 /**
   3034  * \brief Retrieve a cursor for one of the overloaded declarations referenced
   3035  * by a \c CXCursor_OverloadedDeclRef cursor.
   3036  *
   3037  * \param cursor The cursor whose overloaded declarations are being queried.
   3038  *
   3039  * \param index The zero-based index into the set of overloaded declarations in
   3040  * the cursor.
   3041  *
   3042  * \returns A cursor representing the declaration referenced by the given
   3043  * \c cursor at the specified \c index. If the cursor does not have an
   3044  * associated set of overloaded declarations, or if the index is out of bounds,
   3045  * returns \c clang_getNullCursor();
   3046  */
   3047 CINDEX_LINKAGE CXCursor clang_getOverloadedDecl(CXCursor cursor,
   3048                                                 unsigned index);
   3049 
   3050 /**
   3051  * @}
   3052  */
   3053 
   3054 /**
   3055  * \defgroup CINDEX_ATTRIBUTES Information for attributes
   3056  *
   3057  * @{
   3058  */
   3059 
   3060 
   3061 /**
   3062  * \brief For cursors representing an iboutletcollection attribute,
   3063  *  this function returns the collection element type.
   3064  *
   3065  */
   3066 CINDEX_LINKAGE CXType clang_getIBOutletCollectionType(CXCursor);
   3067 
   3068 /**
   3069  * @}
   3070  */
   3071 
   3072 /**
   3073  * \defgroup CINDEX_CURSOR_TRAVERSAL Traversing the AST with cursors
   3074  *
   3075  * These routines provide the ability to traverse the abstract syntax tree
   3076  * using cursors.
   3077  *
   3078  * @{
   3079  */
   3080 
   3081 /**
   3082  * \brief Describes how the traversal of the children of a particular
   3083  * cursor should proceed after visiting a particular child cursor.
   3084  *
   3085  * A value of this enumeration type should be returned by each
   3086  * \c CXCursorVisitor to indicate how clang_visitChildren() proceed.
   3087  */
   3088 enum CXChildVisitResult {
   3089   /**
   3090    * \brief Terminates the cursor traversal.
   3091    */
   3092   CXChildVisit_Break,
   3093   /**
   3094    * \brief Continues the cursor traversal with the next sibling of
   3095    * the cursor just visited, without visiting its children.
   3096    */
   3097   CXChildVisit_Continue,
   3098   /**
   3099    * \brief Recursively traverse the children of this cursor, using
   3100    * the same visitor and client data.
   3101    */
   3102   CXChildVisit_Recurse
   3103 };
   3104 
   3105 /**
   3106  * \brief Visitor invoked for each cursor found by a traversal.
   3107  *
   3108  * This visitor function will be invoked for each cursor found by
   3109  * clang_visitCursorChildren(). Its first argument is the cursor being
   3110  * visited, its second argument is the parent visitor for that cursor,
   3111  * and its third argument is the client data provided to
   3112  * clang_visitCursorChildren().
   3113  *
   3114  * The visitor should return one of the \c CXChildVisitResult values
   3115  * to direct clang_visitCursorChildren().
   3116  */
   3117 typedef enum CXChildVisitResult (*CXCursorVisitor)(CXCursor cursor,
   3118                                                    CXCursor parent,
   3119                                                    CXClientData client_data);
   3120 
   3121 /**
   3122  * \brief Visit the children of a particular cursor.
   3123  *
   3124  * This function visits all the direct children of the given cursor,
   3125  * invoking the given \p visitor function with the cursors of each
   3126  * visited child. The traversal may be recursive, if the visitor returns
   3127  * \c CXChildVisit_Recurse. The traversal may also be ended prematurely, if
   3128  * the visitor returns \c CXChildVisit_Break.
   3129  *
   3130  * \param parent the cursor whose child may be visited. All kinds of
   3131  * cursors can be visited, including invalid cursors (which, by
   3132  * definition, have no children).
   3133  *
   3134  * \param visitor the visitor function that will be invoked for each
   3135  * child of \p parent.
   3136  *
   3137  * \param client_data pointer data supplied by the client, which will
   3138  * be passed to the visitor each time it is invoked.
   3139  *
   3140  * \returns a non-zero value if the traversal was terminated
   3141  * prematurely by the visitor returning \c CXChildVisit_Break.
   3142  */
   3143 CINDEX_LINKAGE unsigned clang_visitChildren(CXCursor parent,
   3144                                             CXCursorVisitor visitor,
   3145                                             CXClientData client_data);
   3146 #ifdef __has_feature
   3147 #  if __has_feature(blocks)
   3148 /**
   3149  * \brief Visitor invoked for each cursor found by a traversal.
   3150  *
   3151  * This visitor block will be invoked for each cursor found by
   3152  * clang_visitChildrenWithBlock(). Its first argument is the cursor being
   3153  * visited, its second argument is the parent visitor for that cursor.
   3154  *
   3155  * The visitor should return one of the \c CXChildVisitResult values
   3156  * to direct clang_visitChildrenWithBlock().
   3157  */
   3158 typedef enum CXChildVisitResult
   3159      (^CXCursorVisitorBlock)(CXCursor cursor, CXCursor parent);
   3160 
   3161 /**
   3162  * Visits the children of a cursor using the specified block.  Behaves
   3163  * identically to clang_visitChildren() in all other respects.
   3164  */
   3165 unsigned clang_visitChildrenWithBlock(CXCursor parent,
   3166                                       CXCursorVisitorBlock block);
   3167 #  endif
   3168 #endif
   3169 
   3170 /**
   3171  * @}
   3172  */
   3173 
   3174 /**
   3175  * \defgroup CINDEX_CURSOR_XREF Cross-referencing in the AST
   3176  *
   3177  * These routines provide the ability to determine references within and
   3178  * across translation units, by providing the names of the entities referenced
   3179  * by cursors, follow reference cursors to the declarations they reference,
   3180  * and associate declarations with their definitions.
   3181  *
   3182  * @{
   3183  */
   3184 
   3185 /**
   3186  * \brief Retrieve a Unified Symbol Resolution (USR) for the entity referenced
   3187  * by the given cursor.
   3188  *
   3189  * A Unified Symbol Resolution (USR) is a string that identifies a particular
   3190  * entity (function, class, variable, etc.) within a program. USRs can be
   3191  * compared across translation units to determine, e.g., when references in
   3192  * one translation refer to an entity defined in another translation unit.
   3193  */
   3194 CINDEX_LINKAGE CXString clang_getCursorUSR(CXCursor);
   3195 
   3196 /**
   3197  * \brief Construct a USR for a specified Objective-C class.
   3198  */
   3199 CINDEX_LINKAGE CXString clang_constructUSR_ObjCClass(const char *class_name);
   3200 
   3201 /**
   3202  * \brief Construct a USR for a specified Objective-C category.
   3203  */
   3204 CINDEX_LINKAGE CXString
   3205   clang_constructUSR_ObjCCategory(const char *class_name,
   3206                                  const char *category_name);
   3207 
   3208 /**
   3209  * \brief Construct a USR for a specified Objective-C protocol.
   3210  */
   3211 CINDEX_LINKAGE CXString
   3212   clang_constructUSR_ObjCProtocol(const char *protocol_name);
   3213 
   3214 
   3215 /**
   3216  * \brief Construct a USR for a specified Objective-C instance variable and
   3217  *   the USR for its containing class.
   3218  */
   3219 CINDEX_LINKAGE CXString clang_constructUSR_ObjCIvar(const char *name,
   3220                                                     CXString classUSR);
   3221 
   3222 /**
   3223  * \brief Construct a USR for a specified Objective-C method and
   3224  *   the USR for its containing class.
   3225  */
   3226 CINDEX_LINKAGE CXString clang_constructUSR_ObjCMethod(const char *name,
   3227                                                       unsigned isInstanceMethod,
   3228                                                       CXString classUSR);
   3229 
   3230 /**
   3231  * \brief Construct a USR for a specified Objective-C property and the USR
   3232  *  for its containing class.
   3233  */
   3234 CINDEX_LINKAGE CXString clang_constructUSR_ObjCProperty(const char *property,
   3235                                                         CXString classUSR);
   3236 
   3237 /**
   3238  * \brief Retrieve a name for the entity referenced by this cursor.
   3239  */
   3240 CINDEX_LINKAGE CXString clang_getCursorSpelling(CXCursor);
   3241 
   3242 /**
   3243  * \brief Retrieve a range for a piece that forms the cursors spelling name.
   3244  * Most of the times there is only one range for the complete spelling but for
   3245  * objc methods and objc message expressions, there are multiple pieces for each
   3246  * selector identifier.
   3247  *
   3248  * \param pieceIndex the index of the spelling name piece. If this is greater
   3249  * than the actual number of pieces, it will return a NULL (invalid) range.
   3250  *
   3251  * \param options Reserved.
   3252  */
   3253 CINDEX_LINKAGE CXSourceRange clang_Cursor_getSpellingNameRange(CXCursor,
   3254                                                           unsigned pieceIndex,
   3255                                                           unsigned options);
   3256 
   3257 /**
   3258  * \brief Retrieve the display name for the entity referenced by this cursor.
   3259  *
   3260  * The display name contains extra information that helps identify the cursor,
   3261  * such as the parameters of a function or template or the arguments of a
   3262  * class template specialization.
   3263  */
   3264 CINDEX_LINKAGE CXString clang_getCursorDisplayName(CXCursor);
   3265 
   3266 /** \brief For a cursor that is a reference, retrieve a cursor representing the
   3267  * entity that it references.
   3268  *
   3269  * Reference cursors refer to other entities in the AST. For example, an
   3270  * Objective-C superclass reference cursor refers to an Objective-C class.
   3271  * This function produces the cursor for the Objective-C class from the
   3272  * cursor for the superclass reference. If the input cursor is a declaration or
   3273  * definition, it returns that declaration or definition unchanged.
   3274  * Otherwise, returns the NULL cursor.
   3275  */
   3276 CINDEX_LINKAGE CXCursor clang_getCursorReferenced(CXCursor);
   3277 
   3278 /**
   3279  *  \brief For a cursor that is either a reference to or a declaration
   3280  *  of some entity, retrieve a cursor that describes the definition of
   3281  *  that entity.
   3282  *
   3283  *  Some entities can be declared multiple times within a translation
   3284  *  unit, but only one of those declarations can also be a
   3285  *  definition. For example, given:
   3286  *
   3287  *  \code
   3288  *  int f(int, int);
   3289  *  int g(int x, int y) { return f(x, y); }
   3290  *  int f(int a, int b) { return a + b; }
   3291  *  int f(int, int);
   3292  *  \endcode
   3293  *
   3294  *  there are three declarations of the function "f", but only the
   3295  *  second one is a definition. The clang_getCursorDefinition()
   3296  *  function will take any cursor pointing to a declaration of "f"
   3297  *  (the first or fourth lines of the example) or a cursor referenced
   3298  *  that uses "f" (the call to "f' inside "g") and will return a
   3299  *  declaration cursor pointing to the definition (the second "f"
   3300  *  declaration).
   3301  *
   3302  *  If given a cursor for which there is no corresponding definition,
   3303  *  e.g., because there is no definition of that entity within this
   3304  *  translation unit, returns a NULL cursor.
   3305  */
   3306 CINDEX_LINKAGE CXCursor clang_getCursorDefinition(CXCursor);
   3307 
   3308 /**
   3309  * \brief Determine whether the declaration pointed to by this cursor
   3310  * is also a definition of that entity.
   3311  */
   3312 CINDEX_LINKAGE unsigned clang_isCursorDefinition(CXCursor);
   3313 
   3314 /**
   3315  * \brief Retrieve the canonical cursor corresponding to the given cursor.
   3316  *
   3317  * In the C family of languages, many kinds of entities can be declared several
   3318  * times within a single translation unit. For example, a structure type can
   3319  * be forward-declared (possibly multiple times) and later defined:
   3320  *
   3321  * \code
   3322  * struct X;
   3323  * struct X;
   3324  * struct X {
   3325  *   int member;
   3326  * };
   3327  * \endcode
   3328  *
   3329  * The declarations and the definition of \c X are represented by three
   3330  * different cursors, all of which are declarations of the same underlying
   3331  * entity. One of these cursor is considered the "canonical" cursor, which
   3332  * is effectively the representative for the underlying entity. One can
   3333  * determine if two cursors are declarations of the same underlying entity by
   3334  * comparing their canonical cursors.
   3335  *
   3336  * \returns The canonical cursor for the entity referred to by the given cursor.
   3337  */
   3338 CINDEX_LINKAGE CXCursor clang_getCanonicalCursor(CXCursor);
   3339 
   3340 
   3341 /**
   3342  * \brief If the cursor points to a selector identifier in a objc method or
   3343  * message expression, this returns the selector index.
   3344  *
   3345  * After getting a cursor with #clang_getCursor, this can be called to
   3346  * determine if the location points to a selector identifier.
   3347  *
   3348  * \returns The selector index if the cursor is an objc method or message
   3349  * expression and the cursor is pointing to a selector identifier, or -1
   3350  * otherwise.
   3351  */
   3352 CINDEX_LINKAGE int clang_Cursor_getObjCSelectorIndex(CXCursor);
   3353 
   3354 /**
   3355  * \brief Given a cursor pointing to a C++ method call or an ObjC message,
   3356  * returns non-zero if the method/message is "dynamic", meaning:
   3357  *
   3358  * For a C++ method: the call is virtual.
   3359  * For an ObjC message: the receiver is an object instance, not 'super' or a
   3360  * specific class.
   3361  *
   3362  * If the method/message is "static" or the cursor does not point to a
   3363  * method/message, it will return zero.
   3364  */
   3365 CINDEX_LINKAGE int clang_Cursor_isDynamicCall(CXCursor C);
   3366 
   3367 /**
   3368  * \brief Given a cursor pointing to an ObjC message, returns the CXType of the
   3369  * receiver.
   3370  */
   3371 CINDEX_LINKAGE CXType clang_Cursor_getReceiverType(CXCursor C);
   3372 
   3373 /**
   3374  * \brief Property attributes for a \c CXCursor_ObjCPropertyDecl.
   3375  */
   3376 typedef enum {
   3377   CXObjCPropertyAttr_noattr    = 0x00,
   3378   CXObjCPropertyAttr_readonly  = 0x01,
   3379   CXObjCPropertyAttr_getter    = 0x02,
   3380   CXObjCPropertyAttr_assign    = 0x04,
   3381   CXObjCPropertyAttr_readwrite = 0x08,
   3382   CXObjCPropertyAttr_retain    = 0x10,
   3383   CXObjCPropertyAttr_copy      = 0x20,
   3384   CXObjCPropertyAttr_nonatomic = 0x40,
   3385   CXObjCPropertyAttr_setter    = 0x80,
   3386   CXObjCPropertyAttr_atomic    = 0x100,
   3387   CXObjCPropertyAttr_weak      = 0x200,
   3388   CXObjCPropertyAttr_strong    = 0x400,
   3389   CXObjCPropertyAttr_unsafe_unretained = 0x800
   3390 } CXObjCPropertyAttrKind;
   3391 
   3392 /**
   3393  * \brief Given a cursor that represents a property declaration, return the
   3394  * associated property attributes. The bits are formed from
   3395  * \c CXObjCPropertyAttrKind.
   3396  *
   3397  * \param reserved Reserved for future use, pass 0.
   3398  */
   3399 CINDEX_LINKAGE unsigned clang_Cursor_getObjCPropertyAttributes(CXCursor C,
   3400                                                              unsigned reserved);
   3401 
   3402 /**
   3403  * \brief 'Qualifiers' written next to the return and parameter types in
   3404  * ObjC method declarations.
   3405  */
   3406 typedef enum {
   3407   CXObjCDeclQualifier_None = 0x0,
   3408   CXObjCDeclQualifier_In = 0x1,
   3409   CXObjCDeclQualifier_Inout = 0x2,
   3410   CXObjCDeclQualifier_Out = 0x4,
   3411   CXObjCDeclQualifier_Bycopy = 0x8,
   3412   CXObjCDeclQualifier_Byref = 0x10,
   3413   CXObjCDeclQualifier_Oneway = 0x20
   3414 } CXObjCDeclQualifierKind;
   3415 
   3416 /**
   3417  * \brief Given a cursor that represents an ObjC method or parameter
   3418  * declaration, return the associated ObjC qualifiers for the return type or the
   3419  * parameter respectively. The bits are formed from CXObjCDeclQualifierKind.
   3420  */
   3421 CINDEX_LINKAGE unsigned clang_Cursor_getObjCDeclQualifiers(CXCursor C);
   3422 
   3423 /**
   3424  * \brief Given a cursor that represents an ObjC method or property declaration,
   3425  * return non-zero if the declaration was affected by "@optional".
   3426  * Returns zero if the cursor is not such a declaration or it is "@required".
   3427  */
   3428 CINDEX_LINKAGE unsigned clang_Cursor_isObjCOptional(CXCursor C);
   3429 
   3430 /**
   3431  * \brief Returns non-zero if the given cursor is a variadic function or method.
   3432  */
   3433 CINDEX_LINKAGE unsigned clang_Cursor_isVariadic(CXCursor C);
   3434 
   3435 /**
   3436  * \brief Given a cursor that represents a declaration, return the associated
   3437  * comment's source range.  The range may include multiple consecutive comments
   3438  * with whitespace in between.
   3439  */
   3440 CINDEX_LINKAGE CXSourceRange clang_Cursor_getCommentRange(CXCursor C);
   3441 
   3442 /**
   3443  * \brief Given a cursor that represents a declaration, return the associated
   3444  * comment text, including comment markers.
   3445  */
   3446 CINDEX_LINKAGE CXString clang_Cursor_getRawCommentText(CXCursor C);
   3447 
   3448 /**
   3449  * \brief Given a cursor that represents a documentable entity (e.g.,
   3450  * declaration), return the associated \\brief paragraph; otherwise return the
   3451  * first paragraph.
   3452  */
   3453 CINDEX_LINKAGE CXString clang_Cursor_getBriefCommentText(CXCursor C);
   3454 
   3455 /**
   3456  * \brief Given a cursor that represents a documentable entity (e.g.,
   3457  * declaration), return the associated parsed comment as a
   3458  * \c CXComment_FullComment AST node.
   3459  */
   3460 CINDEX_LINKAGE CXComment clang_Cursor_getParsedComment(CXCursor C);
   3461 
   3462 /**
   3463  * @}
   3464  */
   3465 
   3466 /**
   3467  * \defgroup CINDEX_MODULE Module introspection
   3468  *
   3469  * The functions in this group provide access to information about modules.
   3470  *
   3471  * @{
   3472  */
   3473 
   3474 typedef void *CXModule;
   3475 
   3476 /**
   3477  * \brief Given a CXCursor_ModuleImportDecl cursor, return the associated module.
   3478  */
   3479 CINDEX_LINKAGE CXModule clang_Cursor_getModule(CXCursor C);
   3480 
   3481 /**
   3482  * \param Module a module object.
   3483  *
   3484  * \returns the module file where the provided module object came from.
   3485  */
   3486 CINDEX_LINKAGE CXFile clang_Module_getASTFile(CXModule Module);
   3487 
   3488 /**
   3489  * \param Module a module object.
   3490  *
   3491  * \returns the parent of a sub-module or NULL if the given module is top-level,
   3492  * e.g. for 'std.vector' it will return the 'std' module.
   3493  */
   3494 CINDEX_LINKAGE CXModule clang_Module_getParent(CXModule Module);
   3495 
   3496 /**
   3497  * \param Module a module object.
   3498  *
   3499  * \returns the name of the module, e.g. for the 'std.vector' sub-module it
   3500  * will return "vector".
   3501  */
   3502 CINDEX_LINKAGE CXString clang_Module_getName(CXModule Module);
   3503 
   3504 /**
   3505  * \param Module a module object.
   3506  *
   3507  * \returns the full name of the module, e.g. "std.vector".
   3508  */
   3509 CINDEX_LINKAGE CXString clang_Module_getFullName(CXModule Module);
   3510 
   3511 /**
   3512  * \param Module a module object.
   3513  *
   3514  * \returns the number of top level headers associated with this module.
   3515  */
   3516 CINDEX_LINKAGE unsigned clang_Module_getNumTopLevelHeaders(CXTranslationUnit,
   3517                                                            CXModule Module);
   3518 
   3519 /**
   3520  * \param Module a module object.
   3521  *
   3522  * \param Index top level header index (zero-based).
   3523  *
   3524  * \returns the specified top level header associated with the module.
   3525  */
   3526 CINDEX_LINKAGE
   3527 CXFile clang_Module_getTopLevelHeader(CXTranslationUnit,
   3528                                       CXModule Module, unsigned Index);
   3529 
   3530 /**
   3531  * @}
   3532  */
   3533 
   3534 /**
   3535  * \defgroup CINDEX_COMMENT Comment AST introspection
   3536  *
   3537  * The routines in this group provide access to information in the
   3538  * documentation comment ASTs.
   3539  *
   3540  * @{
   3541  */
   3542 
   3543 /**
   3544  * \brief Describes the type of the comment AST node (\c CXComment).  A comment
   3545  * node can be considered block content (e. g., paragraph), inline content
   3546  * (plain text) or neither (the root AST node).
   3547  */
   3548 enum CXCommentKind {
   3549   /**
   3550    * \brief Null comment.  No AST node is constructed at the requested location
   3551    * because there is no text or a syntax error.
   3552    */
   3553   CXComment_Null = 0,
   3554 
   3555   /**
   3556    * \brief Plain text.  Inline content.
   3557    */
   3558   CXComment_Text = 1,
   3559 
   3560   /**
   3561    * \brief A command with word-like arguments that is considered inline content.
   3562    *
   3563    * For example: \\c command.
   3564    */
   3565   CXComment_InlineCommand = 2,
   3566 
   3567   /**
   3568    * \brief HTML start tag with attributes (name-value pairs).  Considered
   3569    * inline content.
   3570    *
   3571    * For example:
   3572    * \verbatim
   3573    * <br> <br /> <a href="http://example.org/">
   3574    * \endverbatim
   3575    */
   3576   CXComment_HTMLStartTag = 3,
   3577 
   3578   /**
   3579    * \brief HTML end tag.  Considered inline content.
   3580    *
   3581    * For example:
   3582    * \verbatim
   3583    * </a>
   3584    * \endverbatim
   3585    */
   3586   CXComment_HTMLEndTag = 4,
   3587 
   3588   /**
   3589    * \brief A paragraph, contains inline comment.  The paragraph itself is
   3590    * block content.
   3591    */
   3592   CXComment_Paragraph = 5,
   3593 
   3594   /**
   3595    * \brief A command that has zero or more word-like arguments (number of
   3596    * word-like arguments depends on command name) and a paragraph as an
   3597    * argument.  Block command is block content.
   3598    *
   3599    * Paragraph argument is also a child of the block command.
   3600    *
   3601    * For example: \\brief has 0 word-like arguments and a paragraph argument.
   3602    *
   3603    * AST nodes of special kinds that parser knows about (e. g., \\param
   3604    * command) have their own node kinds.
   3605    */
   3606   CXComment_BlockCommand = 6,
   3607 
   3608   /**
   3609    * \brief A \\param or \\arg command that describes the function parameter
   3610    * (name, passing direction, description).
   3611    *
   3612    * For example: \\param [in] ParamName description.
   3613    */
   3614   CXComment_ParamCommand = 7,
   3615 
   3616   /**
   3617    * \brief A \\tparam command that describes a template parameter (name and
   3618    * description).
   3619    *
   3620    * For example: \\tparam T description.
   3621    */
   3622   CXComment_TParamCommand = 8,
   3623 
   3624   /**
   3625    * \brief A verbatim block command (e. g., preformatted code).  Verbatim
   3626    * block has an opening and a closing command and contains multiple lines of
   3627    * text (\c CXComment_VerbatimBlockLine child nodes).
   3628    *
   3629    * For example:
   3630    * \\verbatim
   3631    * aaa
   3632    * \\endverbatim
   3633    */
   3634   CXComment_VerbatimBlockCommand = 9,
   3635 
   3636   /**
   3637    * \brief A line of text that is contained within a
   3638    * CXComment_VerbatimBlockCommand node.
   3639    */
   3640   CXComment_VerbatimBlockLine = 10,
   3641 
   3642   /**
   3643    * \brief A verbatim line command.  Verbatim line has an opening command,
   3644    * a single line of text (up to the newline after the opening command) and
   3645    * has no closing command.
   3646    */
   3647   CXComment_VerbatimLine = 11,
   3648 
   3649   /**
   3650    * \brief A full comment attached to a declaration, contains block content.
   3651    */
   3652   CXComment_FullComment = 12
   3653 };
   3654 
   3655 /**
   3656  * \brief The most appropriate rendering mode for an inline command, chosen on
   3657  * command semantics in Doxygen.
   3658  */
   3659 enum CXCommentInlineCommandRenderKind {
   3660   /**
   3661    * \brief Command argument should be rendered in a normal font.
   3662    */
   3663   CXCommentInlineCommandRenderKind_Normal,
   3664 
   3665   /**
   3666    * \brief Command argument should be rendered in a bold font.
   3667    */
   3668   CXCommentInlineCommandRenderKind_Bold,
   3669 
   3670   /**
   3671    * \brief Command argument should be rendered in a monospaced font.
   3672    */
   3673   CXCommentInlineCommandRenderKind_Monospaced,
   3674 
   3675   /**
   3676    * \brief Command argument should be rendered emphasized (typically italic
   3677    * font).
   3678    */
   3679   CXCommentInlineCommandRenderKind_Emphasized
   3680 };
   3681 
   3682 /**
   3683  * \brief Describes parameter passing direction for \\param or \\arg command.
   3684  */
   3685 enum CXCommentParamPassDirection {
   3686   /**
   3687    * \brief The parameter is an input parameter.
   3688    */
   3689   CXCommentParamPassDirection_In,
   3690 
   3691   /**
   3692    * \brief The parameter is an output parameter.
   3693    */
   3694   CXCommentParamPassDirection_Out,
   3695 
   3696   /**
   3697    * \brief The parameter is an input and output parameter.
   3698    */
   3699   CXCommentParamPassDirection_InOut
   3700 };
   3701 
   3702 /**
   3703  * \param Comment AST node of any kind.
   3704  *
   3705  * \returns the type of the AST node.
   3706  */
   3707 CINDEX_LINKAGE enum CXCommentKind clang_Comment_getKind(CXComment Comment);
   3708 
   3709 /**
   3710  * \param Comment AST node of any kind.
   3711  *
   3712  * \returns number of children of the AST node.
   3713  */
   3714 CINDEX_LINKAGE unsigned clang_Comment_getNumChildren(CXComment Comment);
   3715 
   3716 /**
   3717  * \param Comment AST node of any kind.
   3718  *
   3719  * \param ChildIdx child index (zero-based).
   3720  *
   3721  * \returns the specified child of the AST node.
   3722  */
   3723 CINDEX_LINKAGE
   3724 CXComment clang_Comment_getChild(CXComment Comment, unsigned ChildIdx);
   3725 
   3726 /**
   3727  * \brief A \c CXComment_Paragraph node is considered whitespace if it contains
   3728  * only \c CXComment_Text nodes that are empty or whitespace.
   3729  *
   3730  * Other AST nodes (except \c CXComment_Paragraph and \c CXComment_Text) are
   3731  * never considered whitespace.
   3732  *
   3733  * \returns non-zero if \c Comment is whitespace.
   3734  */
   3735 CINDEX_LINKAGE unsigned clang_Comment_isWhitespace(CXComment Comment);
   3736 
   3737 /**
   3738  * \returns non-zero if \c Comment is inline content and has a newline
   3739  * immediately following it in the comment text.  Newlines between paragraphs
   3740  * do not count.
   3741  */
   3742 CINDEX_LINKAGE
   3743 unsigned clang_InlineContentComment_hasTrailingNewline(CXComment Comment);
   3744 
   3745 /**
   3746  * \param Comment a \c CXComment_Text AST node.
   3747  *
   3748  * \returns text contained in the AST node.
   3749  */
   3750 CINDEX_LINKAGE CXString clang_TextComment_getText(CXComment Comment);
   3751 
   3752 /**
   3753  * \param Comment a \c CXComment_InlineCommand AST node.
   3754  *
   3755  * \returns name of the inline command.
   3756  */
   3757 CINDEX_LINKAGE
   3758 CXString clang_InlineCommandComment_getCommandName(CXComment Comment);
   3759 
   3760 /**
   3761  * \param Comment a \c CXComment_InlineCommand AST node.
   3762  *
   3763  * \returns the most appropriate rendering mode, chosen on command
   3764  * semantics in Doxygen.
   3765  */
   3766 CINDEX_LINKAGE enum CXCommentInlineCommandRenderKind
   3767 clang_InlineCommandComment_getRenderKind(CXComment Comment);
   3768 
   3769 /**
   3770  * \param Comment a \c CXComment_InlineCommand AST node.
   3771  *
   3772  * \returns number of command arguments.
   3773  */
   3774 CINDEX_LINKAGE
   3775 unsigned clang_InlineCommandComment_getNumArgs(CXComment Comment);
   3776 
   3777 /**
   3778  * \param Comment a \c CXComment_InlineCommand AST node.
   3779  *
   3780  * \param ArgIdx argument index (zero-based).
   3781  *
   3782  * \returns text of the specified argument.
   3783  */
   3784 CINDEX_LINKAGE
   3785 CXString clang_InlineCommandComment_getArgText(CXComment Comment,
   3786                                                unsigned ArgIdx);
   3787 
   3788 /**
   3789  * \param Comment a \c CXComment_HTMLStartTag or \c CXComment_HTMLEndTag AST
   3790  * node.
   3791  *
   3792  * \returns HTML tag name.
   3793  */
   3794 CINDEX_LINKAGE CXString clang_HTMLTagComment_getTagName(CXComment Comment);
   3795 
   3796 /**
   3797  * \param Comment a \c CXComment_HTMLStartTag AST node.
   3798  *
   3799  * \returns non-zero if tag is self-closing (for example, &lt;br /&gt;).
   3800  */
   3801 CINDEX_LINKAGE
   3802 unsigned clang_HTMLStartTagComment_isSelfClosing(CXComment Comment);
   3803 
   3804 /**
   3805  * \param Comment a \c CXComment_HTMLStartTag AST node.
   3806  *
   3807  * \returns number of attributes (name-value pairs) attached to the start tag.
   3808  */
   3809 CINDEX_LINKAGE unsigned clang_HTMLStartTag_getNumAttrs(CXComment Comment);
   3810 
   3811 /**
   3812  * \param Comment a \c CXComment_HTMLStartTag AST node.
   3813  *
   3814  * \param AttrIdx attribute index (zero-based).
   3815  *
   3816  * \returns name of the specified attribute.
   3817  */
   3818 CINDEX_LINKAGE
   3819 CXString clang_HTMLStartTag_getAttrName(CXComment Comment, unsigned AttrIdx);
   3820 
   3821 /**
   3822  * \param Comment a \c CXComment_HTMLStartTag AST node.
   3823  *
   3824  * \param AttrIdx attribute index (zero-based).
   3825  *
   3826  * \returns value of the specified attribute.
   3827  */
   3828 CINDEX_LINKAGE
   3829 CXString clang_HTMLStartTag_getAttrValue(CXComment Comment, unsigned AttrIdx);
   3830 
   3831 /**
   3832  * \param Comment a \c CXComment_BlockCommand AST node.
   3833  *
   3834  * \returns name of the block command.
   3835  */
   3836 CINDEX_LINKAGE
   3837 CXString clang_BlockCommandComment_getCommandName(CXComment Comment);
   3838 
   3839 /**
   3840  * \param Comment a \c CXComment_BlockCommand AST node.
   3841  *
   3842  * \returns number of word-like arguments.
   3843  */
   3844 CINDEX_LINKAGE
   3845 unsigned clang_BlockCommandComment_getNumArgs(CXComment Comment);
   3846 
   3847 /**
   3848  * \param Comment a \c CXComment_BlockCommand AST node.
   3849  *
   3850  * \param ArgIdx argument index (zero-based).
   3851  *
   3852  * \returns text of the specified word-like argument.
   3853  */
   3854 CINDEX_LINKAGE
   3855 CXString clang_BlockCommandComment_getArgText(CXComment Comment,
   3856                                               unsigned ArgIdx);
   3857 
   3858 /**
   3859  * \param Comment a \c CXComment_BlockCommand or
   3860  * \c CXComment_VerbatimBlockCommand AST node.
   3861  *
   3862  * \returns paragraph argument of the block command.
   3863  */
   3864 CINDEX_LINKAGE
   3865 CXComment clang_BlockCommandComment_getParagraph(CXComment Comment);
   3866 
   3867 /**
   3868  * \param Comment a \c CXComment_ParamCommand AST node.
   3869  *
   3870  * \returns parameter name.
   3871  */
   3872 CINDEX_LINKAGE
   3873 CXString clang_ParamCommandComment_getParamName(CXComment Comment);
   3874 
   3875 /**
   3876  * \param Comment a \c CXComment_ParamCommand AST node.
   3877  *
   3878  * \returns non-zero if the parameter that this AST node represents was found
   3879  * in the function prototype and \c clang_ParamCommandComment_getParamIndex
   3880  * function will return a meaningful value.
   3881  */
   3882 CINDEX_LINKAGE
   3883 unsigned clang_ParamCommandComment_isParamIndexValid(CXComment Comment);
   3884 
   3885 /**
   3886  * \param Comment a \c CXComment_ParamCommand AST node.
   3887  *
   3888  * \returns zero-based parameter index in function prototype.
   3889  */
   3890 CINDEX_LINKAGE
   3891 unsigned clang_ParamCommandComment_getParamIndex(CXComment Comment);
   3892 
   3893 /**
   3894  * \param Comment a \c CXComment_ParamCommand AST node.
   3895  *
   3896  * \returns non-zero if parameter passing direction was specified explicitly in
   3897  * the comment.
   3898  */
   3899 CINDEX_LINKAGE
   3900 unsigned clang_ParamCommandComment_isDirectionExplicit(CXComment Comment);
   3901 
   3902 /**
   3903  * \param Comment a \c CXComment_ParamCommand AST node.
   3904  *
   3905  * \returns parameter passing direction.
   3906  */
   3907 CINDEX_LINKAGE
   3908 enum CXCommentParamPassDirection clang_ParamCommandComment_getDirection(
   3909                                                             CXComment Comment);
   3910 
   3911 /**
   3912  * \param Comment a \c CXComment_TParamCommand AST node.
   3913  *
   3914  * \returns template parameter name.
   3915  */
   3916 CINDEX_LINKAGE
   3917 CXString clang_TParamCommandComment_getParamName(CXComment Comment);
   3918 
   3919 /**
   3920  * \param Comment a \c CXComment_TParamCommand AST node.
   3921  *
   3922  * \returns non-zero if the parameter that this AST node represents was found
   3923  * in the template parameter list and
   3924  * \c clang_TParamCommandComment_getDepth and
   3925  * \c clang_TParamCommandComment_getIndex functions will return a meaningful
   3926  * value.
   3927  */
   3928 CINDEX_LINKAGE
   3929 unsigned clang_TParamCommandComment_isParamPositionValid(CXComment Comment);
   3930 
   3931 /**
   3932  * \param Comment a \c CXComment_TParamCommand AST node.
   3933  *
   3934  * \returns zero-based nesting depth of this parameter in the template parameter list.
   3935  *
   3936  * For example,
   3937  * \verbatim
   3938  *     template<typename C, template<typename T> class TT>
   3939  *     void test(TT<int> aaa);
   3940  * \endverbatim
   3941  * for C and TT nesting depth is 0,
   3942  * for T nesting depth is 1.
   3943  */
   3944 CINDEX_LINKAGE
   3945 unsigned clang_TParamCommandComment_getDepth(CXComment Comment);
   3946 
   3947 /**
   3948  * \param Comment a \c CXComment_TParamCommand AST node.
   3949  *
   3950  * \returns zero-based parameter index in the template parameter list at a
   3951  * given nesting depth.
   3952  *
   3953  * For example,
   3954  * \verbatim
   3955  *     template<typename C, template<typename T> class TT>
   3956  *     void test(TT<int> aaa);
   3957  * \endverbatim
   3958  * for C and TT nesting depth is 0, so we can ask for index at depth 0:
   3959  * at depth 0 C's index is 0, TT's index is 1.
   3960  *
   3961  * For T nesting depth is 1, so we can ask for index at depth 0 and 1:
   3962  * at depth 0 T's index is 1 (same as TT's),
   3963  * at depth 1 T's index is 0.
   3964  */
   3965 CINDEX_LINKAGE
   3966 unsigned clang_TParamCommandComment_getIndex(CXComment Comment, unsigned Depth);
   3967 
   3968 /**
   3969  * \param Comment a \c CXComment_VerbatimBlockLine AST node.
   3970  *
   3971  * \returns text contained in the AST node.
   3972  */
   3973 CINDEX_LINKAGE
   3974 CXString clang_VerbatimBlockLineComment_getText(CXComment Comment);
   3975 
   3976 /**
   3977  * \param Comment a \c CXComment_VerbatimLine AST node.
   3978  *
   3979  * \returns text contained in the AST node.
   3980  */
   3981 CINDEX_LINKAGE CXString clang_VerbatimLineComment_getText(CXComment Comment);
   3982 
   3983 /**
   3984  * \brief Convert an HTML tag AST node to string.
   3985  *
   3986  * \param Comment a \c CXComment_HTMLStartTag or \c CXComment_HTMLEndTag AST
   3987  * node.
   3988  *
   3989  * \returns string containing an HTML tag.
   3990  */
   3991 CINDEX_LINKAGE CXString clang_HTMLTagComment_getAsString(CXComment Comment);
   3992 
   3993 /**
   3994  * \brief Convert a given full parsed comment to an HTML fragment.
   3995  *
   3996  * Specific details of HTML layout are subject to change.  Don't try to parse
   3997  * this HTML back into an AST, use other APIs instead.
   3998  *
   3999  * Currently the following CSS classes are used:
   4000  * \li "para-brief" for \\brief paragraph and equivalent commands;
   4001  * \li "para-returns" for \\returns paragraph and equivalent commands;
   4002  * \li "word-returns" for the "Returns" word in \\returns paragraph.
   4003  *
   4004  * Function argument documentation is rendered as a \<dl\> list with arguments
   4005  * sorted in function prototype order.  CSS classes used:
   4006  * \li "param-name-index-NUMBER" for parameter name (\<dt\>);
   4007  * \li "param-descr-index-NUMBER" for parameter description (\<dd\>);
   4008  * \li "param-name-index-invalid" and "param-descr-index-invalid" are used if
   4009  * parameter index is invalid.
   4010  *
   4011  * Template parameter documentation is rendered as a \<dl\> list with
   4012  * parameters sorted in template parameter list order.  CSS classes used:
   4013  * \li "tparam-name-index-NUMBER" for parameter name (\<dt\>);
   4014  * \li "tparam-descr-index-NUMBER" for parameter description (\<dd\>);
   4015  * \li "tparam-name-index-other" and "tparam-descr-index-other" are used for
   4016  * names inside template template parameters;
   4017  * \li "tparam-name-index-invalid" and "tparam-descr-index-invalid" are used if
   4018  * parameter position is invalid.
   4019  *
   4020  * \param Comment a \c CXComment_FullComment AST node.
   4021  *
   4022  * \returns string containing an HTML fragment.
   4023  */
   4024 CINDEX_LINKAGE CXString clang_FullComment_getAsHTML(CXComment Comment);
   4025 
   4026 /**
   4027  * \brief Convert a given full parsed comment to an XML document.
   4028  *
   4029  * A Relax NG schema for the XML can be found in comment-xml-schema.rng file
   4030  * inside clang source tree.
   4031  *
   4032  * \param Comment a \c CXComment_FullComment AST node.
   4033  *
   4034  * \returns string containing an XML document.
   4035  */
   4036 CINDEX_LINKAGE CXString clang_FullComment_getAsXML(CXComment Comment);
   4037 
   4038 /**
   4039  * @}
   4040  */
   4041 
   4042 /**
   4043  * \defgroup CINDEX_CPP C++ AST introspection
   4044  *
   4045  * The routines in this group provide access information in the ASTs specific
   4046  * to C++ language features.
   4047  *
   4048  * @{
   4049  */
   4050 
   4051 /**
   4052  * \brief Determine if a C++ member function or member function template is
   4053  * pure virtual.
   4054  */
   4055 CINDEX_LINKAGE unsigned clang_CXXMethod_isPureVirtual(CXCursor C);
   4056 
   4057 /**
   4058  * \brief Determine if a C++ member function or member function template is
   4059  * declared 'static'.
   4060  */
   4061 CINDEX_LINKAGE unsigned clang_CXXMethod_isStatic(CXCursor C);
   4062 
   4063 /**
   4064  * \brief Determine if a C++ member function or member function template is
   4065  * explicitly declared 'virtual' or if it overrides a virtual method from
   4066  * one of the base classes.
   4067  */
   4068 CINDEX_LINKAGE unsigned clang_CXXMethod_isVirtual(CXCursor C);
   4069 
   4070 /**
   4071  * \brief Given a cursor that represents a template, determine
   4072  * the cursor kind of the specializations would be generated by instantiating
   4073  * the template.
   4074  *
   4075  * This routine can be used to determine what flavor of function template,
   4076  * class template, or class template partial specialization is stored in the
   4077  * cursor. For example, it can describe whether a class template cursor is
   4078  * declared with "struct", "class" or "union".
   4079  *
   4080  * \param C The cursor to query. This cursor should represent a template
   4081  * declaration.
   4082  *
   4083  * \returns The cursor kind of the specializations that would be generated
   4084  * by instantiating the template \p C. If \p C is not a template, returns
   4085  * \c CXCursor_NoDeclFound.
   4086  */
   4087 CINDEX_LINKAGE enum CXCursorKind clang_getTemplateCursorKind(CXCursor C);
   4088 
   4089 /**
   4090  * \brief Given a cursor that may represent a specialization or instantiation
   4091  * of a template, retrieve the cursor that represents the template that it
   4092  * specializes or from which it was instantiated.
   4093  *
   4094  * This routine determines the template involved both for explicit
   4095  * specializations of templates and for implicit instantiations of the template,
   4096  * both of which are referred to as "specializations". For a class template
   4097  * specialization (e.g., \c std::vector<bool>), this routine will return
   4098  * either the primary template (\c std::vector) or, if the specialization was
   4099  * instantiated from a class template partial specialization, the class template
   4100  * partial specialization. For a class template partial specialization and a
   4101  * function template specialization (including instantiations), this
   4102  * this routine will return the specialized template.
   4103  *
   4104  * For members of a class template (e.g., member functions, member classes, or
   4105  * static data members), returns the specialized or instantiated member.
   4106  * Although not strictly "templates" in the C++ language, members of class
   4107  * templates have the same notions of specializations and instantiations that
   4108  * templates do, so this routine treats them similarly.
   4109  *
   4110  * \param C A cursor that may be a specialization of a template or a member
   4111  * of a template.
   4112  *
   4113  * \returns If the given cursor is a specialization or instantiation of a
   4114  * template or a member thereof, the template or member that it specializes or
   4115  * from which it was instantiated. Otherwise, returns a NULL cursor.
   4116  */
   4117 CINDEX_LINKAGE CXCursor clang_getSpecializedCursorTemplate(CXCursor C);
   4118 
   4119 /**
   4120  * \brief Given a cursor that references something else, return the source range
   4121  * covering that reference.
   4122  *
   4123  * \param C A cursor pointing to a member reference, a declaration reference, or
   4124  * an operator call.
   4125  * \param NameFlags A bitset with three independent flags:
   4126  * CXNameRange_WantQualifier, CXNameRange_WantTemplateArgs, and
   4127  * CXNameRange_WantSinglePiece.
   4128  * \param PieceIndex For contiguous names or when passing the flag
   4129  * CXNameRange_WantSinglePiece, only one piece with index 0 is
   4130  * available. When the CXNameRange_WantSinglePiece flag is not passed for a
   4131  * non-contiguous names, this index can be used to retrieve the individual
   4132  * pieces of the name. See also CXNameRange_WantSinglePiece.
   4133  *
   4134  * \returns The piece of the name pointed to by the given cursor. If there is no
   4135  * name, or if the PieceIndex is out-of-range, a null-cursor will be returned.
   4136  */
   4137 CINDEX_LINKAGE CXSourceRange clang_getCursorReferenceNameRange(CXCursor C,
   4138                                                 unsigned NameFlags,
   4139                                                 unsigned PieceIndex);
   4140 
   4141 enum CXNameRefFlags {
   4142   /**
   4143    * \brief Include the nested-name-specifier, e.g. Foo:: in x.Foo::y, in the
   4144    * range.
   4145    */
   4146   CXNameRange_WantQualifier = 0x1,
   4147 
   4148   /**
   4149    * \brief Include the explicit template arguments, e.g. \<int> in x.f<int>,
   4150    * in the range.
   4151    */
   4152   CXNameRange_WantTemplateArgs = 0x2,
   4153 
   4154   /**
   4155    * \brief If the name is non-contiguous, return the full spanning range.
   4156    *
   4157    * Non-contiguous names occur in Objective-C when a selector with two or more
   4158    * parameters is used, or in C++ when using an operator:
   4159    * \code
   4160    * [object doSomething:here withValue:there]; // ObjC
   4161    * return some_vector[1]; // C++
   4162    * \endcode
   4163    */
   4164   CXNameRange_WantSinglePiece = 0x4
   4165 };
   4166 
   4167 /**
   4168  * @}
   4169  */
   4170 
   4171 /**
   4172  * \defgroup CINDEX_LEX Token extraction and manipulation
   4173  *
   4174  * The routines in this group provide access to the tokens within a
   4175  * translation unit, along with a semantic mapping of those tokens to
   4176  * their corresponding cursors.
   4177  *
   4178  * @{
   4179  */
   4180 
   4181 /**
   4182  * \brief Describes a kind of token.
   4183  */
   4184 typedef enum CXTokenKind {
   4185   /**
   4186    * \brief A token that contains some kind of punctuation.
   4187    */
   4188   CXToken_Punctuation,
   4189 
   4190   /**
   4191    * \brief A language keyword.
   4192    */
   4193   CXToken_Keyword,
   4194 
   4195   /**
   4196    * \brief An identifier (that is not a keyword).
   4197    */
   4198   CXToken_Identifier,
   4199 
   4200   /**
   4201    * \brief A numeric, string, or character literal.
   4202    */
   4203   CXToken_Literal,
   4204 
   4205   /**
   4206    * \brief A comment.
   4207    */
   4208   CXToken_Comment
   4209 } CXTokenKind;
   4210 
   4211 /**
   4212  * \brief Describes a single preprocessing token.
   4213  */
   4214 typedef struct {
   4215   unsigned int_data[4];
   4216   void *ptr_data;
   4217 } CXToken;
   4218 
   4219 /**
   4220  * \brief Determine the kind of the given token.
   4221  */
   4222 CINDEX_LINKAGE CXTokenKind clang_getTokenKind(CXToken);
   4223 
   4224 /**
   4225  * \brief Determine the spelling of the given token.
   4226  *
   4227  * The spelling of a token is the textual representation of that token, e.g.,
   4228  * the text of an identifier or keyword.
   4229  */
   4230 CINDEX_LINKAGE CXString clang_getTokenSpelling(CXTranslationUnit, CXToken);
   4231 
   4232 /**
   4233  * \brief Retrieve the source location of the given token.
   4234  */
   4235 CINDEX_LINKAGE CXSourceLocation clang_getTokenLocation(CXTranslationUnit,
   4236                                                        CXToken);
   4237 
   4238 /**
   4239  * \brief Retrieve a source range that covers the given token.
   4240  */
   4241 CINDEX_LINKAGE CXSourceRange clang_getTokenExtent(CXTranslationUnit, CXToken);
   4242 
   4243 /**
   4244  * \brief Tokenize the source code described by the given range into raw
   4245  * lexical tokens.
   4246  *
   4247  * \param TU the translation unit whose text is being tokenized.
   4248  *
   4249  * \param Range the source range in which text should be tokenized. All of the
   4250  * tokens produced by tokenization will fall within this source range,
   4251  *
   4252  * \param Tokens this pointer will be set to point to the array of tokens
   4253  * that occur within the given source range. The returned pointer must be
   4254  * freed with clang_disposeTokens() before the translation unit is destroyed.
   4255  *
   4256  * \param NumTokens will be set to the number of tokens in the \c *Tokens
   4257  * array.
   4258  *
   4259  */
   4260 CINDEX_LINKAGE void clang_tokenize(CXTranslationUnit TU, CXSourceRange Range,
   4261                                    CXToken **Tokens, unsigned *NumTokens);
   4262 
   4263 /**
   4264  * \brief Annotate the given set of tokens by providing cursors for each token
   4265  * that can be mapped to a specific entity within the abstract syntax tree.
   4266  *
   4267  * This token-annotation routine is equivalent to invoking
   4268  * clang_getCursor() for the source locations of each of the
   4269  * tokens. The cursors provided are filtered, so that only those
   4270  * cursors that have a direct correspondence to the token are
   4271  * accepted. For example, given a function call \c f(x),
   4272  * clang_getCursor() would provide the following cursors:
   4273  *
   4274  *   * when the cursor is over the 'f', a DeclRefExpr cursor referring to 'f'.
   4275  *   * when the cursor is over the '(' or the ')', a CallExpr referring to 'f'.
   4276  *   * when the cursor is over the 'x', a DeclRefExpr cursor referring to 'x'.
   4277  *
   4278  * Only the first and last of these cursors will occur within the
   4279  * annotate, since the tokens "f" and "x' directly refer to a function
   4280  * and a variable, respectively, but the parentheses are just a small
   4281  * part of the full syntax of the function call expression, which is
   4282  * not provided as an annotation.
   4283  *
   4284  * \param TU the translation unit that owns the given tokens.
   4285  *
   4286  * \param Tokens the set of tokens to annotate.
   4287  *
   4288  * \param NumTokens the number of tokens in \p Tokens.
   4289  *
   4290  * \param Cursors an array of \p NumTokens cursors, whose contents will be
   4291  * replaced with the cursors corresponding to each token.
   4292  */
   4293 CINDEX_LINKAGE void clang_annotateTokens(CXTranslationUnit TU,
   4294                                          CXToken *Tokens, unsigned NumTokens,
   4295                                          CXCursor *Cursors);
   4296 
   4297 /**
   4298  * \brief Free the given set of tokens.
   4299  */
   4300 CINDEX_LINKAGE void clang_disposeTokens(CXTranslationUnit TU,
   4301                                         CXToken *Tokens, unsigned NumTokens);
   4302 
   4303 /**
   4304  * @}
   4305  */
   4306 
   4307 /**
   4308  * \defgroup CINDEX_DEBUG Debugging facilities
   4309  *
   4310  * These routines are used for testing and debugging, only, and should not
   4311  * be relied upon.
   4312  *
   4313  * @{
   4314  */
   4315 
   4316 /* for debug/testing */
   4317 CINDEX_LINKAGE CXString clang_getCursorKindSpelling(enum CXCursorKind Kind);
   4318 CINDEX_LINKAGE void clang_getDefinitionSpellingAndExtent(CXCursor,
   4319                                           const char **startBuf,
   4320                                           const char **endBuf,
   4321                                           unsigned *startLine,
   4322                                           unsigned *startColumn,
   4323                                           unsigned *endLine,
   4324                                           unsigned *endColumn);
   4325 CINDEX_LINKAGE void clang_enableStackTraces(void);
   4326 CINDEX_LINKAGE void clang_executeOnThread(void (*fn)(void*), void *user_data,
   4327                                           unsigned stack_size);
   4328 
   4329 /**
   4330  * @}
   4331  */
   4332 
   4333 /**
   4334  * \defgroup CINDEX_CODE_COMPLET Code completion
   4335  *
   4336  * Code completion involves taking an (incomplete) source file, along with
   4337  * knowledge of where the user is actively editing that file, and suggesting
   4338  * syntactically- and semantically-valid constructs that the user might want to
   4339  * use at that particular point in the source code. These data structures and
   4340  * routines provide support for code completion.
   4341  *
   4342  * @{
   4343  */
   4344 
   4345 /**
   4346  * \brief A semantic string that describes a code-completion result.
   4347  *
   4348  * A semantic string that describes the formatting of a code-completion
   4349  * result as a single "template" of text that should be inserted into the
   4350  * source buffer when a particular code-completion result is selected.
   4351  * Each semantic string is made up of some number of "chunks", each of which
   4352  * contains some text along with a description of what that text means, e.g.,
   4353  * the name of the entity being referenced, whether the text chunk is part of
   4354  * the template, or whether it is a "placeholder" that the user should replace
   4355  * with actual code,of a specific kind. See \c CXCompletionChunkKind for a
   4356  * description of the different kinds of chunks.
   4357  */
   4358 typedef void *CXCompletionString;
   4359 
   4360 /**
   4361  * \brief A single result of code completion.
   4362  */
   4363 typedef struct {
   4364   /**
   4365    * \brief The kind of entity that this completion refers to.
   4366    *
   4367    * The cursor kind will be a macro, keyword, or a declaration (one of the
   4368    * *Decl cursor kinds), describing the entity that the completion is
   4369    * referring to.
   4370    *
   4371    * \todo In the future, we would like to provide a full cursor, to allow
   4372    * the client to extract additional information from declaration.
   4373    */
   4374   enum CXCursorKind CursorKind;
   4375 
   4376   /**
   4377    * \brief The code-completion string that describes how to insert this
   4378    * code-completion result into the editing buffer.
   4379    */
   4380   CXCompletionString CompletionString;
   4381 } CXCompletionResult;
   4382 
   4383 /**
   4384  * \brief Describes a single piece of text within a code-completion string.
   4385  *
   4386  * Each "chunk" within a code-completion string (\c CXCompletionString) is
   4387  * either a piece of text with a specific "kind" that describes how that text
   4388  * should be interpreted by the client or is another completion string.
   4389  */
   4390 enum CXCompletionChunkKind {
   4391   /**
   4392    * \brief A code-completion string that describes "optional" text that
   4393    * could be a part of the template (but is not required).
   4394    *
   4395    * The Optional chunk is the only kind of chunk that has a code-completion
   4396    * string for its representation, which is accessible via
   4397    * \c clang_getCompletionChunkCompletionString(). The code-completion string
   4398    * describes an additional part of the template that is completely optional.
   4399    * For example, optional chunks can be used to describe the placeholders for
   4400    * arguments that match up with defaulted function parameters, e.g. given:
   4401    *
   4402    * \code
   4403    * void f(int x, float y = 3.14, double z = 2.71828);
   4404    * \endcode
   4405    *
   4406    * The code-completion string for this function would contain:
   4407    *   - a TypedText chunk for "f".
   4408    *   - a LeftParen chunk for "(".
   4409    *   - a Placeholder chunk for "int x"
   4410    *   - an Optional chunk containing the remaining defaulted arguments, e.g.,
   4411    *       - a Comma chunk for ","
   4412    *       - a Placeholder chunk for "float y"
   4413    *       - an Optional chunk containing the last defaulted argument:
   4414    *           - a Comma chunk for ","
   4415    *           - a Placeholder chunk for "double z"
   4416    *   - a RightParen chunk for ")"
   4417    *
   4418    * There are many ways to handle Optional chunks. Two simple approaches are:
   4419    *   - Completely ignore optional chunks, in which case the template for the
   4420    *     function "f" would only include the first parameter ("int x").
   4421    *   - Fully expand all optional chunks, in which case the template for the
   4422    *     function "f" would have all of the parameters.
   4423    */
   4424   CXCompletionChunk_Optional,
   4425   /**
   4426    * \brief Text that a user would be expected to type to get this
   4427    * code-completion result.
   4428    *
   4429    * There will be exactly one "typed text" chunk in a semantic string, which
   4430    * will typically provide the spelling of a keyword or the name of a
   4431    * declaration that could be used at the current code point. Clients are
   4432    * expected to filter the code-completion results based on the text in this
   4433    * chunk.
   4434    */
   4435   CXCompletionChunk_TypedText,
   4436   /**
   4437    * \brief Text that should be inserted as part of a code-completion result.
   4438    *
   4439    * A "text" chunk represents text that is part of the template to be
   4440    * inserted into user code should this particular code-completion result
   4441    * be selected.
   4442    */
   4443   CXCompletionChunk_Text,
   4444   /**
   4445    * \brief Placeholder text that should be replaced by the user.
   4446    *
   4447    * A "placeholder" chunk marks a place where the user should insert text
   4448    * into the code-completion template. For example, placeholders might mark
   4449    * the function parameters for a function declaration, to indicate that the
   4450    * user should provide arguments for each of those parameters. The actual
   4451    * text in a placeholder is a suggestion for the text to display before
   4452    * the user replaces the placeholder with real code.
   4453    */
   4454   CXCompletionChunk_Placeholder,
   4455   /**
   4456    * \brief Informative text that should be displayed but never inserted as
   4457    * part of the template.
   4458    *
   4459    * An "informative" chunk contains annotations that can be displayed to
   4460    * help the user decide whether a particular code-completion result is the
   4461    * right option, but which is not part of the actual template to be inserted
   4462    * by code completion.
   4463    */
   4464   CXCompletionChunk_Informative,
   4465   /**
   4466    * \brief Text that describes the current parameter when code-completion is
   4467    * referring to function call, message send, or template specialization.
   4468    *
   4469    * A "current parameter" chunk occurs when code-completion is providing
   4470    * information about a parameter corresponding to the argument at the
   4471    * code-completion point. For example, given a function
   4472    *
   4473    * \code
   4474    * int add(int x, int y);
   4475    * \endcode
   4476    *
   4477    * and the source code \c add(, where the code-completion point is after the
   4478    * "(", the code-completion string will contain a "current parameter" chunk
   4479    * for "int x", indicating that the current argument will initialize that
   4480    * parameter. After typing further, to \c add(17, (where the code-completion
   4481    * point is after the ","), the code-completion string will contain a
   4482    * "current paremeter" chunk to "int y".
   4483    */
   4484   CXCompletionChunk_CurrentParameter,
   4485   /**
   4486    * \brief A left parenthesis ('('), used to initiate a function call or
   4487    * signal the beginning of a function parameter list.
   4488    */
   4489   CXCompletionChunk_LeftParen,
   4490   /**
   4491    * \brief A right parenthesis (')'), used to finish a function call or
   4492    * signal the end of a function parameter list.
   4493    */
   4494   CXCompletionChunk_RightParen,
   4495   /**
   4496    * \brief A left bracket ('[').
   4497    */
   4498   CXCompletionChunk_LeftBracket,
   4499   /**
   4500    * \brief A right bracket (']').
   4501    */
   4502   CXCompletionChunk_RightBracket,
   4503   /**
   4504    * \brief A left brace ('{').
   4505    */
   4506   CXCompletionChunk_LeftBrace,
   4507   /**
   4508    * \brief A right brace ('}').
   4509    */
   4510   CXCompletionChunk_RightBrace,
   4511   /**
   4512    * \brief A left angle bracket ('<').
   4513    */
   4514   CXCompletionChunk_LeftAngle,
   4515   /**
   4516    * \brief A right angle bracket ('>').
   4517    */
   4518   CXCompletionChunk_RightAngle,
   4519   /**
   4520    * \brief A comma separator (',').
   4521    */
   4522   CXCompletionChunk_Comma,
   4523   /**
   4524    * \brief Text that specifies the result type of a given result.
   4525    *
   4526    * This special kind of informative chunk is not meant to be inserted into
   4527    * the text buffer. Rather, it is meant to illustrate the type that an
   4528    * expression using the given completion string would have.
   4529    */
   4530   CXCompletionChunk_ResultType,
   4531   /**
   4532    * \brief A colon (':').
   4533    */
   4534   CXCompletionChunk_Colon,
   4535   /**
   4536    * \brief A semicolon (';').
   4537    */
   4538   CXCompletionChunk_SemiColon,
   4539   /**
   4540    * \brief An '=' sign.
   4541    */
   4542   CXCompletionChunk_Equal,
   4543   /**
   4544    * Horizontal space (' ').
   4545    */
   4546   CXCompletionChunk_HorizontalSpace,
   4547   /**
   4548    * Vertical space ('\n'), after which it is generally a good idea to
   4549    * perform indentation.
   4550    */
   4551   CXCompletionChunk_VerticalSpace
   4552 };
   4553 
   4554 /**
   4555  * \brief Determine the kind of a particular chunk within a completion string.
   4556  *
   4557  * \param completion_string the completion string to query.
   4558  *
   4559  * \param chunk_number the 0-based index of the chunk in the completion string.
   4560  *
   4561  * \returns the kind of the chunk at the index \c chunk_number.
   4562  */
   4563 CINDEX_LINKAGE enum CXCompletionChunkKind
   4564 clang_getCompletionChunkKind(CXCompletionString completion_string,
   4565                              unsigned chunk_number);
   4566 
   4567 /**
   4568  * \brief Retrieve the text associated with a particular chunk within a
   4569  * completion string.
   4570  *
   4571  * \param completion_string the completion string to query.
   4572  *
   4573  * \param chunk_number the 0-based index of the chunk in the completion string.
   4574  *
   4575  * \returns the text associated with the chunk at index \c chunk_number.
   4576  */
   4577 CINDEX_LINKAGE CXString
   4578 clang_getCompletionChunkText(CXCompletionString completion_string,
   4579                              unsigned chunk_number);
   4580 
   4581 /**
   4582  * \brief Retrieve the completion string associated with a particular chunk
   4583  * within a completion string.
   4584  *
   4585  * \param completion_string the completion string to query.
   4586  *
   4587  * \param chunk_number the 0-based index of the chunk in the completion string.
   4588  *
   4589  * \returns the completion string associated with the chunk at index
   4590  * \c chunk_number.
   4591  */
   4592 CINDEX_LINKAGE CXCompletionString
   4593 clang_getCompletionChunkCompletionString(CXCompletionString completion_string,
   4594                                          unsigned chunk_number);
   4595 
   4596 /**
   4597  * \brief Retrieve the number of chunks in the given code-completion string.
   4598  */
   4599 CINDEX_LINKAGE unsigned
   4600 clang_getNumCompletionChunks(CXCompletionString completion_string);
   4601 
   4602 /**
   4603  * \brief Determine the priority of this code completion.
   4604  *
   4605  * The priority of a code completion indicates how likely it is that this
   4606  * particular completion is the completion that the user will select. The
   4607  * priority is selected by various internal heuristics.
   4608  *
   4609  * \param completion_string The completion string to query.
   4610  *
   4611  * \returns The priority of this completion string. Smaller values indicate
   4612  * higher-priority (more likely) completions.
   4613  */
   4614 CINDEX_LINKAGE unsigned
   4615 clang_getCompletionPriority(CXCompletionString completion_string);
   4616 
   4617 /**
   4618  * \brief Determine the availability of the entity that this code-completion
   4619  * string refers to.
   4620  *
   4621  * \param completion_string The completion string to query.
   4622  *
   4623  * \returns The availability of the completion string.
   4624  */
   4625 CINDEX_LINKAGE enum CXAvailabilityKind
   4626 clang_getCompletionAvailability(CXCompletionString completion_string);
   4627 
   4628 /**
   4629  * \brief Retrieve the number of annotations associated with the given
   4630  * completion string.
   4631  *
   4632  * \param completion_string the completion string to query.
   4633  *
   4634  * \returns the number of annotations associated with the given completion
   4635  * string.
   4636  */
   4637 CINDEX_LINKAGE unsigned
   4638 clang_getCompletionNumAnnotations(CXCompletionString completion_string);
   4639 
   4640 /**
   4641  * \brief Retrieve the annotation associated with the given completion string.
   4642  *
   4643  * \param completion_string the completion string to query.
   4644  *
   4645  * \param annotation_number the 0-based index of the annotation of the
   4646  * completion string.
   4647  *
   4648  * \returns annotation string associated with the completion at index
   4649  * \c annotation_number, or a NULL string if that annotation is not available.
   4650  */
   4651 CINDEX_LINKAGE CXString
   4652 clang_getCompletionAnnotation(CXCompletionString completion_string,
   4653                               unsigned annotation_number);
   4654 
   4655 /**
   4656  * \brief Retrieve the parent context of the given completion string.
   4657  *
   4658  * The parent context of a completion string is the semantic parent of
   4659  * the declaration (if any) that the code completion represents. For example,
   4660  * a code completion for an Objective-C method would have the method's class
   4661  * or protocol as its context.
   4662  *
   4663  * \param completion_string The code completion string whose parent is
   4664  * being queried.
   4665  *
   4666  * \param kind DEPRECATED: always set to CXCursor_NotImplemented if non-NULL.
   4667  *
   4668  * \returns The name of the completion parent, e.g., "NSObject" if
   4669  * the completion string represents a method in the NSObject class.
   4670  */
   4671 CINDEX_LINKAGE CXString
   4672 clang_getCompletionParent(CXCompletionString completion_string,
   4673                           enum CXCursorKind *kind);
   4674 
   4675 /**
   4676  * \brief Retrieve the brief documentation comment attached to the declaration
   4677  * that corresponds to the given completion string.
   4678  */
   4679 CINDEX_LINKAGE CXString
   4680 clang_getCompletionBriefComment(CXCompletionString completion_string);
   4681 
   4682 /**
   4683  * \brief Retrieve a completion string for an arbitrary declaration or macro
   4684  * definition cursor.
   4685  *
   4686  * \param cursor The cursor to query.
   4687  *
   4688  * \returns A non-context-sensitive completion string for declaration and macro
   4689  * definition cursors, or NULL for other kinds of cursors.
   4690  */
   4691 CINDEX_LINKAGE CXCompletionString
   4692 clang_getCursorCompletionString(CXCursor cursor);
   4693 
   4694 /**
   4695  * \brief Contains the results of code-completion.
   4696  *
   4697  * This data structure contains the results of code completion, as
   4698  * produced by \c clang_codeCompleteAt(). Its contents must be freed by
   4699  * \c clang_disposeCodeCompleteResults.
   4700  */
   4701 typedef struct {
   4702   /**
   4703    * \brief The code-completion results.
   4704    */
   4705   CXCompletionResult *Results;
   4706 
   4707   /**
   4708    * \brief The number of code-completion results stored in the
   4709    * \c Results array.
   4710    */
   4711   unsigned NumResults;
   4712 } CXCodeCompleteResults;
   4713 
   4714 /**
   4715  * \brief Flags that can be passed to \c clang_codeCompleteAt() to
   4716  * modify its behavior.
   4717  *
   4718  * The enumerators in this enumeration can be bitwise-OR'd together to
   4719  * provide multiple options to \c clang_codeCompleteAt().
   4720  */
   4721 enum CXCodeComplete_Flags {
   4722   /**
   4723    * \brief Whether to include macros within the set of code
   4724    * completions returned.
   4725    */
   4726   CXCodeComplete_IncludeMacros = 0x01,
   4727 
   4728   /**
   4729    * \brief Whether to include code patterns for language constructs
   4730    * within the set of code completions, e.g., for loops.
   4731    */
   4732   CXCodeComplete_IncludeCodePatterns = 0x02,
   4733 
   4734   /**
   4735    * \brief Whether to include brief documentation within the set of code
   4736    * completions returned.
   4737    */
   4738   CXCodeComplete_IncludeBriefComments = 0x04
   4739 };
   4740 
   4741 /**
   4742  * \brief Bits that represent the context under which completion is occurring.
   4743  *
   4744  * The enumerators in this enumeration may be bitwise-OR'd together if multiple
   4745  * contexts are occurring simultaneously.
   4746  */
   4747 enum CXCompletionContext {
   4748   /**
   4749    * \brief The context for completions is unexposed, as only Clang results
   4750    * should be included. (This is equivalent to having no context bits set.)
   4751    */
   4752   CXCompletionContext_Unexposed = 0,
   4753 
   4754   /**
   4755    * \brief Completions for any possible type should be included in the results.
   4756    */
   4757   CXCompletionContext_AnyType = 1 << 0,
   4758 
   4759   /**
   4760    * \brief Completions for any possible value (variables, function calls, etc.)
   4761    * should be included in the results.
   4762    */
   4763   CXCompletionContext_AnyValue = 1 << 1,
   4764   /**
   4765    * \brief Completions for values that resolve to an Objective-C object should
   4766    * be included in the results.
   4767    */
   4768   CXCompletionContext_ObjCObjectValue = 1 << 2,
   4769   /**
   4770    * \brief Completions for values that resolve to an Objective-C selector
   4771    * should be included in the results.
   4772    */
   4773   CXCompletionContext_ObjCSelectorValue = 1 << 3,
   4774   /**
   4775    * \brief Completions for values that resolve to a C++ class type should be
   4776    * included in the results.
   4777    */
   4778   CXCompletionContext_CXXClassTypeValue = 1 << 4,
   4779 
   4780   /**
   4781    * \brief Completions for fields of the member being accessed using the dot
   4782    * operator should be included in the results.
   4783    */
   4784   CXCompletionContext_DotMemberAccess = 1 << 5,
   4785   /**
   4786    * \brief Completions for fields of the member being accessed using the arrow
   4787    * operator should be included in the results.
   4788    */
   4789   CXCompletionContext_ArrowMemberAccess = 1 << 6,
   4790   /**
   4791    * \brief Completions for properties of the Objective-C object being accessed
   4792    * using the dot operator should be included in the results.
   4793    */
   4794   CXCompletionContext_ObjCPropertyAccess = 1 << 7,
   4795 
   4796   /**
   4797    * \brief Completions for enum tags should be included in the results.
   4798    */
   4799   CXCompletionContext_EnumTag = 1 << 8,
   4800   /**
   4801    * \brief Completions for union tags should be included in the results.
   4802    */
   4803   CXCompletionContext_UnionTag = 1 << 9,
   4804   /**
   4805    * \brief Completions for struct tags should be included in the results.
   4806    */
   4807   CXCompletionContext_StructTag = 1 << 10,
   4808 
   4809   /**
   4810    * \brief Completions for C++ class names should be included in the results.
   4811    */
   4812   CXCompletionContext_ClassTag = 1 << 11,
   4813   /**
   4814    * \brief Completions for C++ namespaces and namespace aliases should be
   4815    * included in the results.
   4816    */
   4817   CXCompletionContext_Namespace = 1 << 12,
   4818   /**
   4819    * \brief Completions for C++ nested name specifiers should be included in
   4820    * the results.
   4821    */
   4822   CXCompletionContext_NestedNameSpecifier = 1 << 13,
   4823 
   4824   /**
   4825    * \brief Completions for Objective-C interfaces (classes) should be included
   4826    * in the results.
   4827    */
   4828   CXCompletionContext_ObjCInterface = 1 << 14,
   4829   /**
   4830    * \brief Completions for Objective-C protocols should be included in
   4831    * the results.
   4832    */
   4833   CXCompletionContext_ObjCProtocol = 1 << 15,
   4834   /**
   4835    * \brief Completions for Objective-C categories should be included in
   4836    * the results.
   4837    */
   4838   CXCompletionContext_ObjCCategory = 1 << 16,
   4839   /**
   4840    * \brief Completions for Objective-C instance messages should be included
   4841    * in the results.
   4842    */
   4843   CXCompletionContext_ObjCInstanceMessage = 1 << 17,
   4844   /**
   4845    * \brief Completions for Objective-C class messages should be included in
   4846    * the results.
   4847    */
   4848   CXCompletionContext_ObjCClassMessage = 1 << 18,
   4849   /**
   4850    * \brief Completions for Objective-C selector names should be included in
   4851    * the results.
   4852    */
   4853   CXCompletionContext_ObjCSelectorName = 1 << 19,
   4854 
   4855   /**
   4856    * \brief Completions for preprocessor macro names should be included in
   4857    * the results.
   4858    */
   4859   CXCompletionContext_MacroName = 1 << 20,
   4860 
   4861   /**
   4862    * \brief Natural language completions should be included in the results.
   4863    */
   4864   CXCompletionContext_NaturalLanguage = 1 << 21,
   4865 
   4866   /**
   4867    * \brief The current context is unknown, so set all contexts.
   4868    */
   4869   CXCompletionContext_Unknown = ((1 << 22) - 1)
   4870 };
   4871 
   4872 /**
   4873  * \brief Returns a default set of code-completion options that can be
   4874  * passed to\c clang_codeCompleteAt().
   4875  */
   4876 CINDEX_LINKAGE unsigned clang_defaultCodeCompleteOptions(void);
   4877 
   4878 /**
   4879  * \brief Perform code completion at a given location in a translation unit.
   4880  *
   4881  * This function performs code completion at a particular file, line, and
   4882  * column within source code, providing results that suggest potential
   4883  * code snippets based on the context of the completion. The basic model
   4884  * for code completion is that Clang will parse a complete source file,
   4885  * performing syntax checking up to the location where code-completion has
   4886  * been requested. At that point, a special code-completion token is passed
   4887  * to the parser, which recognizes this token and determines, based on the
   4888  * current location in the C/Objective-C/C++ grammar and the state of
   4889  * semantic analysis, what completions to provide. These completions are
   4890  * returned via a new \c CXCodeCompleteResults structure.
   4891  *
   4892  * Code completion itself is meant to be triggered by the client when the
   4893  * user types punctuation characters or whitespace, at which point the
   4894  * code-completion location will coincide with the cursor. For example, if \c p
   4895  * is a pointer, code-completion might be triggered after the "-" and then
   4896  * after the ">" in \c p->. When the code-completion location is afer the ">",
   4897  * the completion results will provide, e.g., the members of the struct that
   4898  * "p" points to. The client is responsible for placing the cursor at the
   4899  * beginning of the token currently being typed, then filtering the results
   4900  * based on the contents of the token. For example, when code-completing for
   4901  * the expression \c p->get, the client should provide the location just after
   4902  * the ">" (e.g., pointing at the "g") to this code-completion hook. Then, the
   4903  * client can filter the results based on the current token text ("get"), only
   4904  * showing those results that start with "get". The intent of this interface
   4905  * is to separate the relatively high-latency acquisition of code-completion
   4906  * results from the filtering of results on a per-character basis, which must
   4907  * have a lower latency.
   4908  *
   4909  * \param TU The translation unit in which code-completion should
   4910  * occur. The source files for this translation unit need not be
   4911  * completely up-to-date (and the contents of those source files may
   4912  * be overridden via \p unsaved_files). Cursors referring into the
   4913  * translation unit may be invalidated by this invocation.
   4914  *
   4915  * \param complete_filename The name of the source file where code
   4916  * completion should be performed. This filename may be any file
   4917  * included in the translation unit.
   4918  *
   4919  * \param complete_line The line at which code-completion should occur.
   4920  *
   4921  * \param complete_column The column at which code-completion should occur.
   4922  * Note that the column should point just after the syntactic construct that
   4923  * initiated code completion, and not in the middle of a lexical token.
   4924  *
   4925  * \param unsaved_files the Tiles that have not yet been saved to disk
   4926  * but may be required for parsing or code completion, including the
   4927  * contents of those files.  The contents and name of these files (as
   4928  * specified by CXUnsavedFile) are copied when necessary, so the
   4929  * client only needs to guarantee their validity until the call to
   4930  * this function returns.
   4931  *
   4932  * \param num_unsaved_files The number of unsaved file entries in \p
   4933  * unsaved_files.
   4934  *
   4935  * \param options Extra options that control the behavior of code
   4936  * completion, expressed as a bitwise OR of the enumerators of the
   4937  * CXCodeComplete_Flags enumeration. The
   4938  * \c clang_defaultCodeCompleteOptions() function returns a default set
   4939  * of code-completion options.
   4940  *
   4941  * \returns If successful, a new \c CXCodeCompleteResults structure
   4942  * containing code-completion results, which should eventually be
   4943  * freed with \c clang_disposeCodeCompleteResults(). If code
   4944  * completion fails, returns NULL.
   4945  */
   4946 CINDEX_LINKAGE
   4947 CXCodeCompleteResults *clang_codeCompleteAt(CXTranslationUnit TU,
   4948                                             const char *complete_filename,
   4949                                             unsigned complete_line,
   4950                                             unsigned complete_column,
   4951                                             struct CXUnsavedFile *unsaved_files,
   4952                                             unsigned num_unsaved_files,
   4953                                             unsigned options);
   4954 
   4955 /**
   4956  * \brief Sort the code-completion results in case-insensitive alphabetical
   4957  * order.
   4958  *
   4959  * \param Results The set of results to sort.
   4960  * \param NumResults The number of results in \p Results.
   4961  */
   4962 CINDEX_LINKAGE
   4963 void clang_sortCodeCompletionResults(CXCompletionResult *Results,
   4964                                      unsigned NumResults);
   4965 
   4966 /**
   4967  * \brief Free the given set of code-completion results.
   4968  */
   4969 CINDEX_LINKAGE
   4970 void clang_disposeCodeCompleteResults(CXCodeCompleteResults *Results);
   4971 
   4972 /**
   4973  * \brief Determine the number of diagnostics produced prior to the
   4974  * location where code completion was performed.
   4975  */
   4976 CINDEX_LINKAGE
   4977 unsigned clang_codeCompleteGetNumDiagnostics(CXCodeCompleteResults *Results);
   4978 
   4979 /**
   4980  * \brief Retrieve a diagnostic associated with the given code completion.
   4981  *
   4982  * \param Results the code completion results to query.
   4983  * \param Index the zero-based diagnostic number to retrieve.
   4984  *
   4985  * \returns the requested diagnostic. This diagnostic must be freed
   4986  * via a call to \c clang_disposeDiagnostic().
   4987  */
   4988 CINDEX_LINKAGE
   4989 CXDiagnostic clang_codeCompleteGetDiagnostic(CXCodeCompleteResults *Results,
   4990                                              unsigned Index);
   4991 
   4992 /**
   4993  * \brief Determines what compeltions are appropriate for the context
   4994  * the given code completion.
   4995  *
   4996  * \param Results the code completion results to query
   4997  *
   4998  * \returns the kinds of completions that are appropriate for use
   4999  * along with the given code completion results.
   5000  */
   5001 CINDEX_LINKAGE
   5002 unsigned long long clang_codeCompleteGetContexts(
   5003                                                 CXCodeCompleteResults *Results);
   5004 
   5005 /**
   5006  * \brief Returns the cursor kind for the container for the current code
   5007  * completion context. The container is only guaranteed to be set for
   5008  * contexts where a container exists (i.e. member accesses or Objective-C
   5009  * message sends); if there is not a container, this function will return
   5010  * CXCursor_InvalidCode.
   5011  *
   5012  * \param Results the code completion results to query
   5013  *
   5014  * \param IsIncomplete on return, this value will be false if Clang has complete
   5015  * information about the container. If Clang does not have complete
   5016  * information, this value will be true.
   5017  *
   5018  * \returns the container kind, or CXCursor_InvalidCode if there is not a
   5019  * container
   5020  */
   5021 CINDEX_LINKAGE
   5022 enum CXCursorKind clang_codeCompleteGetContainerKind(
   5023                                                  CXCodeCompleteResults *Results,
   5024                                                      unsigned *IsIncomplete);
   5025 
   5026 /**
   5027  * \brief Returns the USR for the container for the current code completion
   5028  * context. If there is not a container for the current context, this
   5029  * function will return the empty string.
   5030  *
   5031  * \param Results the code completion results to query
   5032  *
   5033  * \returns the USR for the container
   5034  */
   5035 CINDEX_LINKAGE
   5036 CXString clang_codeCompleteGetContainerUSR(CXCodeCompleteResults *Results);
   5037 
   5038 
   5039 /**
   5040  * \brief Returns the currently-entered selector for an Objective-C message
   5041  * send, formatted like "initWithFoo:bar:". Only guaranteed to return a
   5042  * non-empty string for CXCompletionContext_ObjCInstanceMessage and
   5043  * CXCompletionContext_ObjCClassMessage.
   5044  *
   5045  * \param Results the code completion results to query
   5046  *
   5047  * \returns the selector (or partial selector) that has been entered thus far
   5048  * for an Objective-C message send.
   5049  */
   5050 CINDEX_LINKAGE
   5051 CXString clang_codeCompleteGetObjCSelector(CXCodeCompleteResults *Results);
   5052 
   5053 /**
   5054  * @}
   5055  */
   5056 
   5057 
   5058 /**
   5059  * \defgroup CINDEX_MISC Miscellaneous utility functions
   5060  *
   5061  * @{
   5062  */
   5063 
   5064 /**
   5065  * \brief Return a version string, suitable for showing to a user, but not
   5066  *        intended to be parsed (the format is not guaranteed to be stable).
   5067  */
   5068 CINDEX_LINKAGE CXString clang_getClangVersion(void);
   5069 
   5070 
   5071 /**
   5072  * \brief Enable/disable crash recovery.
   5073  *
   5074  * \param isEnabled Flag to indicate if crash recovery is enabled.  A non-zero
   5075  *        value enables crash recovery, while 0 disables it.
   5076  */
   5077 CINDEX_LINKAGE void clang_toggleCrashRecovery(unsigned isEnabled);
   5078 
   5079  /**
   5080   * \brief Visitor invoked for each file in a translation unit
   5081   *        (used with clang_getInclusions()).
   5082   *
   5083   * This visitor function will be invoked by clang_getInclusions() for each
   5084   * file included (either at the top-level or by \#include directives) within
   5085   * a translation unit.  The first argument is the file being included, and
   5086   * the second and third arguments provide the inclusion stack.  The
   5087   * array is sorted in order of immediate inclusion.  For example,
   5088   * the first element refers to the location that included 'included_file'.
   5089   */
   5090 typedef void (*CXInclusionVisitor)(CXFile included_file,
   5091                                    CXSourceLocation* inclusion_stack,
   5092                                    unsigned include_len,
   5093                                    CXClientData client_data);
   5094 
   5095 /**
   5096  * \brief Visit the set of preprocessor inclusions in a translation unit.
   5097  *   The visitor function is called with the provided data for every included
   5098  *   file.  This does not include headers included by the PCH file (unless one
   5099  *   is inspecting the inclusions in the PCH file itself).
   5100  */
   5101 CINDEX_LINKAGE void clang_getInclusions(CXTranslationUnit tu,
   5102                                         CXInclusionVisitor visitor,
   5103                                         CXClientData client_data);
   5104 
   5105 /**
   5106  * @}
   5107  */
   5108 
   5109 /** \defgroup CINDEX_REMAPPING Remapping functions
   5110  *
   5111  * @{
   5112  */
   5113 
   5114 /**
   5115  * \brief A remapping of original source files and their translated files.
   5116  */
   5117 typedef void *CXRemapping;
   5118 
   5119 /**
   5120  * \brief Retrieve a remapping.
   5121  *
   5122  * \param path the path that contains metadata about remappings.
   5123  *
   5124  * \returns the requested remapping. This remapping must be freed
   5125  * via a call to \c clang_remap_dispose(). Can return NULL if an error occurred.
   5126  */
   5127 CINDEX_LINKAGE CXRemapping clang_getRemappings(const char *path);
   5128 
   5129 /**
   5130  * \brief Retrieve a remapping.
   5131  *
   5132  * \param filePaths pointer to an array of file paths containing remapping info.
   5133  *
   5134  * \param numFiles number of file paths.
   5135  *
   5136  * \returns the requested remapping. This remapping must be freed
   5137  * via a call to \c clang_remap_dispose(). Can return NULL if an error occurred.
   5138  */
   5139 CINDEX_LINKAGE
   5140 CXRemapping clang_getRemappingsFromFileList(const char **filePaths,
   5141                                             unsigned numFiles);
   5142 
   5143 /**
   5144  * \brief Determine the number of remappings.
   5145  */
   5146 CINDEX_LINKAGE unsigned clang_remap_getNumFiles(CXRemapping);
   5147 
   5148 /**
   5149  * \brief Get the original and the associated filename from the remapping.
   5150  *
   5151  * \param original If non-NULL, will be set to the original filename.
   5152  *
   5153  * \param transformed If non-NULL, will be set to the filename that the original
   5154  * is associated with.
   5155  */
   5156 CINDEX_LINKAGE void clang_remap_getFilenames(CXRemapping, unsigned index,
   5157                                      CXString *original, CXString *transformed);
   5158 
   5159 /**
   5160  * \brief Dispose the remapping.
   5161  */
   5162 CINDEX_LINKAGE void clang_remap_dispose(CXRemapping);
   5163 
   5164 /**
   5165  * @}
   5166  */
   5167 
   5168 /** \defgroup CINDEX_HIGH Higher level API functions
   5169  *
   5170  * @{
   5171  */
   5172 
   5173 enum CXVisitorResult {
   5174   CXVisit_Break,
   5175   CXVisit_Continue
   5176 };
   5177 
   5178 typedef struct {
   5179   void *context;
   5180   enum CXVisitorResult (*visit)(void *context, CXCursor, CXSourceRange);
   5181 } CXCursorAndRangeVisitor;
   5182 
   5183 typedef enum {
   5184   /**
   5185    * \brief Function returned successfully.
   5186    */
   5187   CXResult_Success = 0,
   5188   /**
   5189    * \brief One of the parameters was invalid for the function.
   5190    */
   5191   CXResult_Invalid = 1,
   5192   /**
   5193    * \brief The function was terminated by a callback (e.g. it returned
   5194    * CXVisit_Break)
   5195    */
   5196   CXResult_VisitBreak = 2
   5197 
   5198 } CXResult;
   5199 
   5200 /**
   5201  * \brief Find references of a declaration in a specific file.
   5202  *
   5203  * \param cursor pointing to a declaration or a reference of one.
   5204  *
   5205  * \param file to search for references.
   5206  *
   5207  * \param visitor callback that will receive pairs of CXCursor/CXSourceRange for
   5208  * each reference found.
   5209  * The CXSourceRange will point inside the file; if the reference is inside
   5210  * a macro (and not a macro argument) the CXSourceRange will be invalid.
   5211  *
   5212  * \returns one of the CXResult enumerators.
   5213  */
   5214 CINDEX_LINKAGE CXResult clang_findReferencesInFile(CXCursor cursor, CXFile file,
   5215                                                CXCursorAndRangeVisitor visitor);
   5216 
   5217 /**
   5218  * \brief Find #import/#include directives in a specific file.
   5219  *
   5220  * \param TU translation unit containing the file to query.
   5221  *
   5222  * \param file to search for #import/#include directives.
   5223  *
   5224  * \param visitor callback that will receive pairs of CXCursor/CXSourceRange for
   5225  * each directive found.
   5226  *
   5227  * \returns one of the CXResult enumerators.
   5228  */
   5229 CINDEX_LINKAGE CXResult clang_findIncludesInFile(CXTranslationUnit TU,
   5230                                                  CXFile file,
   5231                                               CXCursorAndRangeVisitor visitor);
   5232 
   5233 #ifdef __has_feature
   5234 #  if __has_feature(blocks)
   5235 
   5236 typedef enum CXVisitorResult
   5237     (^CXCursorAndRangeVisitorBlock)(CXCursor, CXSourceRange);
   5238 
   5239 CINDEX_LINKAGE
   5240 CXResult clang_findReferencesInFileWithBlock(CXCursor, CXFile,
   5241                                              CXCursorAndRangeVisitorBlock);
   5242 
   5243 CINDEX_LINKAGE
   5244 CXResult clang_findIncludesInFileWithBlock(CXTranslationUnit, CXFile,
   5245                                            CXCursorAndRangeVisitorBlock);
   5246 
   5247 #  endif
   5248 #endif
   5249 
   5250 /**
   5251  * \brief The client's data object that is associated with a CXFile.
   5252  */
   5253 typedef void *CXIdxClientFile;
   5254 
   5255 /**
   5256  * \brief The client's data object that is associated with a semantic entity.
   5257  */
   5258 typedef void *CXIdxClientEntity;
   5259 
   5260 /**
   5261  * \brief The client's data object that is associated with a semantic container
   5262  * of entities.
   5263  */
   5264 typedef void *CXIdxClientContainer;
   5265 
   5266 /**
   5267  * \brief The client's data object that is associated with an AST file (PCH
   5268  * or module).
   5269  */
   5270 typedef void *CXIdxClientASTFile;
   5271 
   5272 /**
   5273  * \brief Source location passed to index callbacks.
   5274  */
   5275 typedef struct {
   5276   void *ptr_data[2];
   5277   unsigned int_data;
   5278 } CXIdxLoc;
   5279 
   5280 /**
   5281  * \brief Data for ppIncludedFile callback.
   5282  */
   5283 typedef struct {
   5284   /**
   5285    * \brief Location of '#' in the \#include/\#import directive.
   5286    */
   5287   CXIdxLoc hashLoc;
   5288   /**
   5289    * \brief Filename as written in the \#include/\#import directive.
   5290    */
   5291   const char *filename;
   5292   /**
   5293    * \brief The actual file that the \#include/\#import directive resolved to.
   5294    */
   5295   CXFile file;
   5296   int isImport;
   5297   int isAngled;
   5298   /**
   5299    * \brief Non-zero if the directive was automatically turned into a module
   5300    * import.
   5301    */
   5302   int isModuleImport;
   5303 } CXIdxIncludedFileInfo;
   5304 
   5305 /**
   5306  * \brief Data for IndexerCallbacks#importedASTFile.
   5307  */
   5308 typedef struct {
   5309   /**
   5310    * \brief Top level AST file containing the imported PCH, module or submodule.
   5311    */
   5312   CXFile file;
   5313   /**
   5314    * \brief The imported module or NULL if the AST file is a PCH.
   5315    */
   5316   CXModule module;
   5317   /**
   5318    * \brief Location where the file is imported. Applicable only for modules.
   5319    */
   5320   CXIdxLoc loc;
   5321   /**
   5322    * \brief Non-zero if an inclusion directive was automatically turned into
   5323    * a module import. Applicable only for modules.
   5324    */
   5325   int isImplicit;
   5326 
   5327 } CXIdxImportedASTFileInfo;
   5328 
   5329 typedef enum {
   5330   CXIdxEntity_Unexposed     = 0,
   5331   CXIdxEntity_Typedef       = 1,
   5332   CXIdxEntity_Function      = 2,
   5333   CXIdxEntity_Variable      = 3,
   5334   CXIdxEntity_Field         = 4,
   5335   CXIdxEntity_EnumConstant  = 5,
   5336 
   5337   CXIdxEntity_ObjCClass     = 6,
   5338   CXIdxEntity_ObjCProtocol  = 7,
   5339   CXIdxEntity_ObjCCategory  = 8,
   5340 
   5341   CXIdxEntity_ObjCInstanceMethod = 9,
   5342   CXIdxEntity_ObjCClassMethod    = 10,
   5343   CXIdxEntity_ObjCProperty  = 11,
   5344   CXIdxEntity_ObjCIvar      = 12,
   5345 
   5346   CXIdxEntity_Enum          = 13,
   5347   CXIdxEntity_Struct        = 14,
   5348   CXIdxEntity_Union         = 15,
   5349 
   5350   CXIdxEntity_CXXClass              = 16,
   5351   CXIdxEntity_CXXNamespace          = 17,
   5352   CXIdxEntity_CXXNamespaceAlias     = 18,
   5353   CXIdxEntity_CXXStaticVariable     = 19,
   5354   CXIdxEntity_CXXStaticMethod       = 20,
   5355   CXIdxEntity_CXXInstanceMethod     = 21,
   5356   CXIdxEntity_CXXConstructor        = 22,
   5357   CXIdxEntity_CXXDestructor         = 23,
   5358   CXIdxEntity_CXXConversionFunction = 24,
   5359   CXIdxEntity_CXXTypeAlias          = 25,
   5360   CXIdxEntity_CXXInterface          = 26
   5361 
   5362 } CXIdxEntityKind;
   5363 
   5364 typedef enum {
   5365   CXIdxEntityLang_None = 0,
   5366   CXIdxEntityLang_C    = 1,
   5367   CXIdxEntityLang_ObjC = 2,
   5368   CXIdxEntityLang_CXX  = 3
   5369 } CXIdxEntityLanguage;
   5370 
   5371 /**
   5372  * \brief Extra C++ template information for an entity. This can apply to:
   5373  * CXIdxEntity_Function
   5374  * CXIdxEntity_CXXClass
   5375  * CXIdxEntity_CXXStaticMethod
   5376  * CXIdxEntity_CXXInstanceMethod
   5377  * CXIdxEntity_CXXConstructor
   5378  * CXIdxEntity_CXXConversionFunction
   5379  * CXIdxEntity_CXXTypeAlias
   5380  */
   5381 typedef enum {
   5382   CXIdxEntity_NonTemplate   = 0,
   5383   CXIdxEntity_Template      = 1,
   5384   CXIdxEntity_TemplatePartialSpecialization = 2,
   5385   CXIdxEntity_TemplateSpecialization = 3
   5386 } CXIdxEntityCXXTemplateKind;
   5387 
   5388 typedef enum {
   5389   CXIdxAttr_Unexposed     = 0,
   5390   CXIdxAttr_IBAction      = 1,
   5391   CXIdxAttr_IBOutlet      = 2,
   5392   CXIdxAttr_IBOutletCollection = 3
   5393 } CXIdxAttrKind;
   5394 
   5395 typedef struct {
   5396   CXIdxAttrKind kind;
   5397   CXCursor cursor;
   5398   CXIdxLoc loc;
   5399 } CXIdxAttrInfo;
   5400 
   5401 typedef struct {
   5402   CXIdxEntityKind kind;
   5403   CXIdxEntityCXXTemplateKind templateKind;
   5404   CXIdxEntityLanguage lang;
   5405   const char *name;
   5406   const char *USR;
   5407   CXCursor cursor;
   5408   const CXIdxAttrInfo *const *attributes;
   5409   unsigned numAttributes;
   5410 } CXIdxEntityInfo;
   5411 
   5412 typedef struct {
   5413   CXCursor cursor;
   5414 } CXIdxContainerInfo;
   5415 
   5416 typedef struct {
   5417   const CXIdxAttrInfo *attrInfo;
   5418   const CXIdxEntityInfo *objcClass;
   5419   CXCursor classCursor;
   5420   CXIdxLoc classLoc;
   5421 } CXIdxIBOutletCollectionAttrInfo;
   5422 
   5423 typedef enum {
   5424   CXIdxDeclFlag_Skipped = 0x1
   5425 } CXIdxDeclInfoFlags;
   5426 
   5427 typedef struct {
   5428   const CXIdxEntityInfo *entityInfo;
   5429   CXCursor cursor;
   5430   CXIdxLoc loc;
   5431   const CXIdxContainerInfo *semanticContainer;
   5432   /**
   5433    * \brief Generally same as #semanticContainer but can be different in
   5434    * cases like out-of-line C++ member functions.
   5435    */
   5436   const CXIdxContainerInfo *lexicalContainer;
   5437   int isRedeclaration;
   5438   int isDefinition;
   5439   int isContainer;
   5440   const CXIdxContainerInfo *declAsContainer;
   5441   /**
   5442    * \brief Whether the declaration exists in code or was created implicitly
   5443    * by the compiler, e.g. implicit objc methods for properties.
   5444    */
   5445   int isImplicit;
   5446   const CXIdxAttrInfo *const *attributes;
   5447   unsigned numAttributes;
   5448 
   5449   unsigned flags;
   5450 
   5451 } CXIdxDeclInfo;
   5452 
   5453 typedef enum {
   5454   CXIdxObjCContainer_ForwardRef = 0,
   5455   CXIdxObjCContainer_Interface = 1,
   5456   CXIdxObjCContainer_Implementation = 2
   5457 } CXIdxObjCContainerKind;
   5458 
   5459 typedef struct {
   5460   const CXIdxDeclInfo *declInfo;
   5461   CXIdxObjCContainerKind kind;
   5462 } CXIdxObjCContainerDeclInfo;
   5463 
   5464 typedef struct {
   5465   const CXIdxEntityInfo *base;
   5466   CXCursor cursor;
   5467   CXIdxLoc loc;
   5468 } CXIdxBaseClassInfo;
   5469 
   5470 typedef struct {
   5471   const CXIdxEntityInfo *protocol;
   5472   CXCursor cursor;
   5473   CXIdxLoc loc;
   5474 } CXIdxObjCProtocolRefInfo;
   5475 
   5476 typedef struct {
   5477   const CXIdxObjCProtocolRefInfo *const *protocols;
   5478   unsigned numProtocols;
   5479 } CXIdxObjCProtocolRefListInfo;
   5480 
   5481 typedef struct {
   5482   const CXIdxObjCContainerDeclInfo *containerInfo;
   5483   const CXIdxBaseClassInfo *superInfo;
   5484   const CXIdxObjCProtocolRefListInfo *protocols;
   5485 } CXIdxObjCInterfaceDeclInfo;
   5486 
   5487 typedef struct {
   5488   const CXIdxObjCContainerDeclInfo *containerInfo;
   5489   const CXIdxEntityInfo *objcClass;
   5490   CXCursor classCursor;
   5491   CXIdxLoc classLoc;
   5492   const CXIdxObjCProtocolRefListInfo *protocols;
   5493 } CXIdxObjCCategoryDeclInfo;
   5494 
   5495 typedef struct {
   5496   const CXIdxDeclInfo *declInfo;
   5497   const CXIdxEntityInfo *getter;
   5498   const CXIdxEntityInfo *setter;
   5499 } CXIdxObjCPropertyDeclInfo;
   5500 
   5501 typedef struct {
   5502   const CXIdxDeclInfo *declInfo;
   5503   const CXIdxBaseClassInfo *const *bases;
   5504   unsigned numBases;
   5505 } CXIdxCXXClassDeclInfo;
   5506 
   5507 /**
   5508  * \brief Data for IndexerCallbacks#indexEntityReference.
   5509  */
   5510 typedef enum {
   5511   /**
   5512    * \brief The entity is referenced directly in user's code.
   5513    */
   5514   CXIdxEntityRef_Direct = 1,
   5515   /**
   5516    * \brief An implicit reference, e.g. a reference of an ObjC method via the
   5517    * dot syntax.
   5518    */
   5519   CXIdxEntityRef_Implicit = 2
   5520 } CXIdxEntityRefKind;
   5521 
   5522 /**
   5523  * \brief Data for IndexerCallbacks#indexEntityReference.
   5524  */
   5525 typedef struct {
   5526   CXIdxEntityRefKind kind;
   5527   /**
   5528    * \brief Reference cursor.
   5529    */
   5530   CXCursor cursor;
   5531   CXIdxLoc loc;
   5532   /**
   5533    * \brief The entity that gets referenced.
   5534    */
   5535   const CXIdxEntityInfo *referencedEntity;
   5536   /**
   5537    * \brief Immediate "parent" of the reference. For example:
   5538    *
   5539    * \code
   5540    * Foo *var;
   5541    * \endcode
   5542    *
   5543    * The parent of reference of type 'Foo' is the variable 'var'.
   5544    * For references inside statement bodies of functions/methods,
   5545    * the parentEntity will be the function/method.
   5546    */
   5547   const CXIdxEntityInfo *parentEntity;
   5548   /**
   5549    * \brief Lexical container context of the reference.
   5550    */
   5551   const CXIdxContainerInfo *container;
   5552 } CXIdxEntityRefInfo;
   5553 
   5554 /**
   5555  * \brief A group of callbacks used by #clang_indexSourceFile and
   5556  * #clang_indexTranslationUnit.
   5557  */
   5558 typedef struct {
   5559   /**
   5560    * \brief Called periodically to check whether indexing should be aborted.
   5561    * Should return 0 to continue, and non-zero to abort.
   5562    */
   5563   int (*abortQuery)(CXClientData client_data, void *reserved);
   5564 
   5565   /**
   5566    * \brief Called at the end of indexing; passes the complete diagnostic set.
   5567    */
   5568   void (*diagnostic)(CXClientData client_data,
   5569                      CXDiagnosticSet, void *reserved);
   5570 
   5571   CXIdxClientFile (*enteredMainFile)(CXClientData client_data,
   5572                                      CXFile mainFile, void *reserved);
   5573 
   5574   /**
   5575    * \brief Called when a file gets \#included/\#imported.
   5576    */
   5577   CXIdxClientFile (*ppIncludedFile)(CXClientData client_data,
   5578                                     const CXIdxIncludedFileInfo *);
   5579 
   5580   /**
   5581    * \brief Called when a AST file (PCH or module) gets imported.
   5582    *
   5583    * AST files will not get indexed (there will not be callbacks to index all
   5584    * the entities in an AST file). The recommended action is that, if the AST
   5585    * file is not already indexed, to initiate a new indexing job specific to
   5586    * the AST file.
   5587    */
   5588   CXIdxClientASTFile (*importedASTFile)(CXClientData client_data,
   5589                                         const CXIdxImportedASTFileInfo *);
   5590 
   5591   /**
   5592    * \brief Called at the beginning of indexing a translation unit.
   5593    */
   5594   CXIdxClientContainer (*startedTranslationUnit)(CXClientData client_data,
   5595                                                  void *reserved);
   5596 
   5597   void (*indexDeclaration)(CXClientData client_data,
   5598                            const CXIdxDeclInfo *);
   5599 
   5600   /**
   5601    * \brief Called to index a reference of an entity.
   5602    */
   5603   void (*indexEntityReference)(CXClientData client_data,
   5604                                const CXIdxEntityRefInfo *);
   5605 
   5606 } IndexerCallbacks;
   5607 
   5608 CINDEX_LINKAGE int clang_index_isEntityObjCContainerKind(CXIdxEntityKind);
   5609 CINDEX_LINKAGE const CXIdxObjCContainerDeclInfo *
   5610 clang_index_getObjCContainerDeclInfo(const CXIdxDeclInfo *);
   5611 
   5612 CINDEX_LINKAGE const CXIdxObjCInterfaceDeclInfo *
   5613 clang_index_getObjCInterfaceDeclInfo(const CXIdxDeclInfo *);
   5614 
   5615 CINDEX_LINKAGE
   5616 const CXIdxObjCCategoryDeclInfo *
   5617 clang_index_getObjCCategoryDeclInfo(const CXIdxDeclInfo *);
   5618 
   5619 CINDEX_LINKAGE const CXIdxObjCProtocolRefListInfo *
   5620 clang_index_getObjCProtocolRefListInfo(const CXIdxDeclInfo *);
   5621 
   5622 CINDEX_LINKAGE const CXIdxObjCPropertyDeclInfo *
   5623 clang_index_getObjCPropertyDeclInfo(const CXIdxDeclInfo *);
   5624 
   5625 CINDEX_LINKAGE const CXIdxIBOutletCollectionAttrInfo *
   5626 clang_index_getIBOutletCollectionAttrInfo(const CXIdxAttrInfo *);
   5627 
   5628 CINDEX_LINKAGE const CXIdxCXXClassDeclInfo *
   5629 clang_index_getCXXClassDeclInfo(const CXIdxDeclInfo *);
   5630 
   5631 /**
   5632  * \brief For retrieving a custom CXIdxClientContainer attached to a
   5633  * container.
   5634  */
   5635 CINDEX_LINKAGE CXIdxClientContainer
   5636 clang_index_getClientContainer(const CXIdxContainerInfo *);
   5637 
   5638 /**
   5639  * \brief For setting a custom CXIdxClientContainer attached to a
   5640  * container.
   5641  */
   5642 CINDEX_LINKAGE void
   5643 clang_index_setClientContainer(const CXIdxContainerInfo *,CXIdxClientContainer);
   5644 
   5645 /**
   5646  * \brief For retrieving a custom CXIdxClientEntity attached to an entity.
   5647  */
   5648 CINDEX_LINKAGE CXIdxClientEntity
   5649 clang_index_getClientEntity(const CXIdxEntityInfo *);
   5650 
   5651 /**
   5652  * \brief For setting a custom CXIdxClientEntity attached to an entity.
   5653  */
   5654 CINDEX_LINKAGE void
   5655 clang_index_setClientEntity(const CXIdxEntityInfo *, CXIdxClientEntity);
   5656 
   5657 /**
   5658  * \brief An indexing action/session, to be applied to one or multiple
   5659  * translation units.
   5660  */
   5661 typedef void *CXIndexAction;
   5662 
   5663 /**
   5664  * \brief An indexing action/session, to be applied to one or multiple
   5665  * translation units.
   5666  *
   5667  * \param CIdx The index object with which the index action will be associated.
   5668  */
   5669 CINDEX_LINKAGE CXIndexAction clang_IndexAction_create(CXIndex CIdx);
   5670 
   5671 /**
   5672  * \brief Destroy the given index action.
   5673  *
   5674  * The index action must not be destroyed until all of the translation units
   5675  * created within that index action have been destroyed.
   5676  */
   5677 CINDEX_LINKAGE void clang_IndexAction_dispose(CXIndexAction);
   5678 
   5679 typedef enum {
   5680   /**
   5681    * \brief Used to indicate that no special indexing options are needed.
   5682    */
   5683   CXIndexOpt_None = 0x0,
   5684 
   5685   /**
   5686    * \brief Used to indicate that IndexerCallbacks#indexEntityReference should
   5687    * be invoked for only one reference of an entity per source file that does
   5688    * not also include a declaration/definition of the entity.
   5689    */
   5690   CXIndexOpt_SuppressRedundantRefs = 0x1,
   5691 
   5692   /**
   5693    * \brief Function-local symbols should be indexed. If this is not set
   5694    * function-local symbols will be ignored.
   5695    */
   5696   CXIndexOpt_IndexFunctionLocalSymbols = 0x2,
   5697 
   5698   /**
   5699    * \brief Implicit function/class template instantiations should be indexed.
   5700    * If this is not set, implicit instantiations will be ignored.
   5701    */
   5702   CXIndexOpt_IndexImplicitTemplateInstantiations = 0x4,
   5703 
   5704   /**
   5705    * \brief Suppress all compiler warnings when parsing for indexing.
   5706    */
   5707   CXIndexOpt_SuppressWarnings = 0x8,
   5708 
   5709   /**
   5710    * \brief Skip a function/method body that was already parsed during an
   5711    * indexing session assosiated with a \c CXIndexAction object.
   5712    * Bodies in system headers are always skipped.
   5713    */
   5714   CXIndexOpt_SkipParsedBodiesInSession = 0x10
   5715 
   5716 } CXIndexOptFlags;
   5717 
   5718 /**
   5719  * \brief Index the given source file and the translation unit corresponding
   5720  * to that file via callbacks implemented through #IndexerCallbacks.
   5721  *
   5722  * \param client_data pointer data supplied by the client, which will
   5723  * be passed to the invoked callbacks.
   5724  *
   5725  * \param index_callbacks Pointer to indexing callbacks that the client
   5726  * implements.
   5727  *
   5728  * \param index_callbacks_size Size of #IndexerCallbacks structure that gets
   5729  * passed in index_callbacks.
   5730  *
   5731  * \param index_options A bitmask of options that affects how indexing is
   5732  * performed. This should be a bitwise OR of the CXIndexOpt_XXX flags.
   5733  *
   5734  * \param out_TU [out] pointer to store a CXTranslationUnit that can be reused
   5735  * after indexing is finished. Set to NULL if you do not require it.
   5736  *
   5737  * \returns If there is a failure from which the there is no recovery, returns
   5738  * non-zero, otherwise returns 0.
   5739  *
   5740  * The rest of the parameters are the same as #clang_parseTranslationUnit.
   5741  */
   5742 CINDEX_LINKAGE int clang_indexSourceFile(CXIndexAction,
   5743                                          CXClientData client_data,
   5744                                          IndexerCallbacks *index_callbacks,
   5745                                          unsigned index_callbacks_size,
   5746                                          unsigned index_options,
   5747                                          const char *source_filename,
   5748                                          const char * const *command_line_args,
   5749                                          int num_command_line_args,
   5750                                          struct CXUnsavedFile *unsaved_files,
   5751                                          unsigned num_unsaved_files,
   5752                                          CXTranslationUnit *out_TU,
   5753                                          unsigned TU_options);
   5754 
   5755 /**
   5756  * \brief Index the given translation unit via callbacks implemented through
   5757  * #IndexerCallbacks.
   5758  *
   5759  * The order of callback invocations is not guaranteed to be the same as
   5760  * when indexing a source file. The high level order will be:
   5761  *
   5762  *   -Preprocessor callbacks invocations
   5763  *   -Declaration/reference callbacks invocations
   5764  *   -Diagnostic callback invocations
   5765  *
   5766  * The parameters are the same as #clang_indexSourceFile.
   5767  *
   5768  * \returns If there is a failure from which the there is no recovery, returns
   5769  * non-zero, otherwise returns 0.
   5770  */
   5771 CINDEX_LINKAGE int clang_indexTranslationUnit(CXIndexAction,
   5772                                               CXClientData client_data,
   5773                                               IndexerCallbacks *index_callbacks,
   5774                                               unsigned index_callbacks_size,
   5775                                               unsigned index_options,
   5776                                               CXTranslationUnit);
   5777 
   5778 /**
   5779  * \brief Retrieve the CXIdxFile, file, line, column, and offset represented by
   5780  * the given CXIdxLoc.
   5781  *
   5782  * If the location refers into a macro expansion, retrieves the
   5783  * location of the macro expansion and if it refers into a macro argument
   5784  * retrieves the location of the argument.
   5785  */
   5786 CINDEX_LINKAGE void clang_indexLoc_getFileLocation(CXIdxLoc loc,
   5787                                                    CXIdxClientFile *indexFile,
   5788                                                    CXFile *file,
   5789                                                    unsigned *line,
   5790                                                    unsigned *column,
   5791                                                    unsigned *offset);
   5792 
   5793 /**
   5794  * \brief Retrieve the CXSourceLocation represented by the given CXIdxLoc.
   5795  */
   5796 CINDEX_LINKAGE
   5797 CXSourceLocation clang_indexLoc_getCXSourceLocation(CXIdxLoc loc);
   5798 
   5799 /**
   5800  * @}
   5801  */
   5802 
   5803 /**
   5804  * @}
   5805  */
   5806 
   5807 #ifdef __cplusplus
   5808 }
   5809 #endif
   5810 #endif
   5811 
   5812