1 //===--- InputInfo.h - Input Source & Type Information ----------*- 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 #ifndef LLVM_CLANG_LIB_DRIVER_INPUTINFO_H 11 #define LLVM_CLANG_LIB_DRIVER_INPUTINFO_H 12 13 #include "clang/Driver/Action.h" 14 #include "clang/Driver/Types.h" 15 #include "llvm/Option/Arg.h" 16 #include <cassert> 17 #include <string> 18 19 namespace clang { 20 namespace driver { 21 22 /// InputInfo - Wrapper for information about an input source. 23 class InputInfo { 24 // FIXME: The distinction between filenames and inputarg here is 25 // gross; we should probably drop the idea of a "linker 26 // input". Doing so means tweaking pipelining to still create link 27 // steps when it sees linker inputs (but not treat them as 28 // arguments), and making sure that arguments get rendered 29 // correctly. 30 enum Class { 31 Nothing, 32 Filename, 33 InputArg, 34 Pipe 35 }; 36 37 union { 38 const char *Filename; 39 const llvm::opt::Arg *InputArg; 40 } Data; 41 Class Kind; 42 const Action* Act; 43 types::ID Type; 44 const char *BaseInput; 45 46 static types::ID GetActionType(const Action *A) { 47 return A != nullptr ? A->getType() : types::TY_Nothing; 48 } 49 50 public: 51 InputInfo() : InputInfo(nullptr, nullptr) {} 52 InputInfo(const Action *A, const char *_BaseInput) 53 : Kind(Nothing), Act(A), Type(GetActionType(A)), BaseInput(_BaseInput) {} 54 55 InputInfo(types::ID _Type, const char *_Filename, const char *_BaseInput) 56 : Kind(Filename), Act(nullptr), Type(_Type), BaseInput(_BaseInput) { 57 Data.Filename = _Filename; 58 } 59 InputInfo(const Action *A, const char *_Filename, const char *_BaseInput) 60 : Kind(Filename), Act(A), Type(GetActionType(A)), BaseInput(_BaseInput) { 61 Data.Filename = _Filename; 62 } 63 64 InputInfo(types::ID _Type, const llvm::opt::Arg *_InputArg, 65 const char *_BaseInput) 66 : Kind(InputArg), Act(nullptr), Type(_Type), BaseInput(_BaseInput) { 67 Data.InputArg = _InputArg; 68 } 69 InputInfo(const Action *A, const llvm::opt::Arg *_InputArg, 70 const char *_BaseInput) 71 : Kind(InputArg), Act(A), Type(GetActionType(A)), BaseInput(_BaseInput) { 72 Data.InputArg = _InputArg; 73 } 74 75 bool isNothing() const { return Kind == Nothing; } 76 bool isFilename() const { return Kind == Filename; } 77 bool isInputArg() const { return Kind == InputArg; } 78 types::ID getType() const { return Type; } 79 const char *getBaseInput() const { return BaseInput; } 80 /// The action for which this InputInfo was created. May be null. 81 const Action *getAction() const { return Act; } 82 void setAction(const Action *A) { Act = A; } 83 84 const char *getFilename() const { 85 assert(isFilename() && "Invalid accessor."); 86 return Data.Filename; 87 } 88 const llvm::opt::Arg &getInputArg() const { 89 assert(isInputArg() && "Invalid accessor."); 90 return *Data.InputArg; 91 } 92 93 /// getAsString - Return a string name for this input, for 94 /// debugging. 95 std::string getAsString() const { 96 if (isFilename()) 97 return std::string("\"") + getFilename() + '"'; 98 else if (isInputArg()) 99 return "(input arg)"; 100 else 101 return "(nothing)"; 102 } 103 }; 104 105 } // end namespace driver 106 } // end namespace clang 107 108 #endif 109
