1 //===-- UniqueDWARFASTType.cpp ----------------------------------*- 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 #include "UniqueDWARFASTType.h" 11 12 // C Includes 13 // C++ Includes 14 // Other libraries and framework includes 15 // Project includes 16 #include "lldb/Symbol/Declaration.h" 17 18 #include "DWARFDebugInfoEntry.h" 19 20 bool 21 UniqueDWARFASTTypeList::Find 22 ( 23 SymbolFileDWARF *symfile, 24 const DWARFCompileUnit *cu, 25 const DWARFDebugInfoEntry *die, 26 const lldb_private::Declaration &decl, 27 const int32_t byte_size, 28 UniqueDWARFASTType &entry 29 ) const 30 { 31 collection::const_iterator pos, end = m_collection.end(); 32 for (pos = m_collection.begin(); pos != end; ++pos) 33 { 34 // Make sure the tags match 35 if (pos->m_die->Tag() == die->Tag()) 36 { 37 // Validate byte sizes of both types only if both are valid. 38 if (pos->m_byte_size < 0 || byte_size < 0 || pos->m_byte_size == byte_size) 39 { 40 // Make sure the file and line match 41 if (pos->m_declaration == decl) 42 { 43 // The type has the same name, and was defined on the same 44 // file and line. Now verify all of the parent DIEs match. 45 const DWARFDebugInfoEntry *parent_arg_die = die->GetParent(); 46 const DWARFDebugInfoEntry *parend_pos_die = pos->m_die->GetParent(); 47 bool match = true; 48 bool done = false; 49 while (!done && match && parent_arg_die && parend_pos_die) 50 { 51 if (parent_arg_die->Tag() == parend_pos_die->Tag()) 52 { 53 const dw_tag_t tag = parent_arg_die->Tag(); 54 switch (tag) 55 { 56 case DW_TAG_class_type: 57 case DW_TAG_structure_type: 58 case DW_TAG_union_type: 59 case DW_TAG_namespace: 60 { 61 const char *parent_arg_die_name = parent_arg_die->GetName(symfile, cu); 62 if (parent_arg_die_name == NULL) // Anonymous (i.e. no-name) struct 63 { 64 match = false; 65 } 66 else 67 { 68 const char *parent_pos_die_name = parend_pos_die->GetName(pos->m_symfile, pos->m_cu); 69 if (parent_pos_die_name == NULL || strcmp (parent_arg_die_name, parent_pos_die_name)) 70 match = false; 71 } 72 } 73 break; 74 75 case DW_TAG_compile_unit: 76 done = true; 77 break; 78 } 79 } 80 parent_arg_die = parent_arg_die->GetParent(); 81 parend_pos_die = parend_pos_die->GetParent(); 82 } 83 84 if (match) 85 { 86 entry = *pos; 87 return true; 88 } 89 } 90 } 91 } 92 } 93 return false; 94 } 95
