ClangASTContext.cpp revision 5325a360f3e7ca7bd053aa75e828953105d10069 
1//===-- ClangASTContext.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 "lldb/Symbol/ClangASTContext.h"
11
12// C Includes
13// C++ Includes
14#include <string>
15
16// Other libraries and framework includes
17#define NDEBUG
18#include "clang/AST/ASTContext.h"
19#include "clang/AST/ASTImporter.h"
20#include "clang/AST/CXXInheritance.h"
21#include "clang/AST/DeclObjC.h"
22#include "clang/AST/RecordLayout.h"
23#include "clang/AST/Type.h"
24#include "clang/Basic/Builtins.h"
25#include "clang/Basic/FileManager.h"
26#include "clang/Basic/SourceManager.h"
27#include "clang/Basic/TargetInfo.h"
28#include "clang/Basic/TargetOptions.h"
29#include "clang/Frontend/FrontendOptions.h"
30#include "clang/Frontend/LangStandard.h"
31#undef NDEBUG
32
33#include "lldb/Core/dwarf.h"
34
35#include <stdio.h>
36
37using namespace lldb;
38using namespace lldb_private;
39using namespace llvm;
40using namespace clang;
41
42static AccessSpecifier
43ConvertAccessTypeToAccessSpecifier (AccessType access)
44{
45    switch (access)
46    {
47    default:               break;
48    case eAccessNone:      return AS_none;
49    case eAccessPublic:    return AS_public;
50    case eAccessPrivate:   return AS_private;
51    case eAccessProtected: return AS_protected;
52    }
53    return AS_none;
54}
55
56static ObjCIvarDecl::AccessControl
57ConvertAccessTypeToObjCIvarAccessControl (AccessType access)
58{
59    switch (access)
60    {
61    default:               break;
62    case eAccessNone:      return ObjCIvarDecl::None;
63    case eAccessPublic:    return ObjCIvarDecl::Public;
64    case eAccessPrivate:   return ObjCIvarDecl::Private;
65    case eAccessProtected: return ObjCIvarDecl::Protected;
66    case eAccessPackage:   return ObjCIvarDecl::Package;
67    }
68    return ObjCIvarDecl::None;
69}
70
71
72static void
73ParseLangArgs
74(
75    LangOptions &Opts,
76    InputKind IK
77)
78{
79    // FIXME: Cleanup per-file based stuff.
80
81    // Set some properties which depend soley on the input kind; it would be nice
82    // to move these to the language standard, and have the driver resolve the
83    // input kind + language standard.
84    if (IK == IK_Asm) {
85        Opts.AsmPreprocessor = 1;
86    } else if (IK == IK_ObjC ||
87               IK == IK_ObjCXX ||
88               IK == IK_PreprocessedObjC ||
89               IK == IK_PreprocessedObjCXX) {
90        Opts.ObjC1 = Opts.ObjC2 = 1;
91    }
92
93    LangStandard::Kind LangStd = LangStandard::lang_unspecified;
94
95    if (LangStd == LangStandard::lang_unspecified) {
96        // Based on the base language, pick one.
97        switch (IK) {
98            case IK_None:
99            case IK_AST:
100                assert(0 && "Invalid input kind!");
101            case IK_OpenCL:
102                LangStd = LangStandard::lang_opencl;
103                break;
104            case IK_Asm:
105            case IK_C:
106            case IK_PreprocessedC:
107            case IK_ObjC:
108            case IK_PreprocessedObjC:
109                LangStd = LangStandard::lang_gnu99;
110                break;
111            case IK_CXX:
112            case IK_PreprocessedCXX:
113            case IK_ObjCXX:
114            case IK_PreprocessedObjCXX:
115                LangStd = LangStandard::lang_gnucxx98;
116                break;
117        }
118    }
119
120    const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
121    Opts.BCPLComment = Std.hasBCPLComments();
122    Opts.C99 = Std.isC99();
123    Opts.CPlusPlus = Std.isCPlusPlus();
124    Opts.CPlusPlus0x = Std.isCPlusPlus0x();
125    Opts.Digraphs = Std.hasDigraphs();
126    Opts.GNUMode = Std.isGNUMode();
127    Opts.GNUInline = !Std.isC99();
128    Opts.HexFloats = Std.hasHexFloats();
129    Opts.ImplicitInt = Std.hasImplicitInt();
130
131    // OpenCL has some additional defaults.
132    if (LangStd == LangStandard::lang_opencl) {
133        Opts.OpenCL = 1;
134        Opts.AltiVec = 1;
135        Opts.CXXOperatorNames = 1;
136        Opts.LaxVectorConversions = 1;
137    }
138
139    // OpenCL and C++ both have bool, true, false keywords.
140    Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
141
142//    if (Opts.CPlusPlus)
143//        Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
144//
145//    if (Args.hasArg(OPT_fobjc_gc_only))
146//        Opts.setGCMode(LangOptions::GCOnly);
147//    else if (Args.hasArg(OPT_fobjc_gc))
148//        Opts.setGCMode(LangOptions::HybridGC);
149//
150//    if (Args.hasArg(OPT_print_ivar_layout))
151//        Opts.ObjCGCBitmapPrint = 1;
152//
153//    if (Args.hasArg(OPT_faltivec))
154//        Opts.AltiVec = 1;
155//
156//    if (Args.hasArg(OPT_pthread))
157//        Opts.POSIXThreads = 1;
158//
159//    llvm::StringRef Vis = getLastArgValue(Args, OPT_fvisibility,
160//                                          "default");
161//    if (Vis == "default")
162        Opts.setVisibilityMode(LangOptions::Default);
163//    else if (Vis == "hidden")
164//        Opts.setVisibilityMode(LangOptions::Hidden);
165//    else if (Vis == "protected")
166//        Opts.setVisibilityMode(LangOptions::Protected);
167//    else
168//        Diags.Report(diag::err_drv_invalid_value)
169//        << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
170
171//    Opts.OverflowChecking = Args.hasArg(OPT_ftrapv);
172
173    // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
174    // is specified, or -std is set to a conforming mode.
175    Opts.Trigraphs = !Opts.GNUMode;
176//    if (Args.hasArg(OPT_trigraphs))
177//        Opts.Trigraphs = 1;
178//
179//    Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
180//                                     OPT_fno_dollars_in_identifiers,
181//                                     !Opts.AsmPreprocessor);
182//    Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
183//    Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
184//    Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
185//    if (Args.hasArg(OPT_fno_lax_vector_conversions))
186//        Opts.LaxVectorConversions = 0;
187//    Opts.Exceptions = Args.hasArg(OPT_fexceptions);
188//    Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
189//    Opts.Blocks = Args.hasArg(OPT_fblocks);
190//    Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
191//    Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
192//    Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
193//    Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
194//    Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
195//    Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
196//    Opts.AccessControl = Args.hasArg(OPT_faccess_control);
197//    Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
198//    Opts.MathErrno = !Args.hasArg(OPT_fno_math_errno);
199//    Opts.InstantiationDepth = getLastArgIntValue(Args, OPT_ftemplate_depth, 99,
200//                                                 Diags);
201//    Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
202//    Opts.ObjCConstantStringClass = getLastArgValue(Args,
203//                                                   OPT_fconstant_string_class);
204//    Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
205//    Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
206//    Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
207//    Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
208//    Opts.Static = Args.hasArg(OPT_static_define);
209    Opts.OptimizeSize = 0;
210
211    // FIXME: Eliminate this dependency.
212//    unsigned Opt =
213//    Args.hasArg(OPT_Os) ? 2 : getLastArgIntValue(Args, OPT_O, 0, Diags);
214//    Opts.Optimize = Opt != 0;
215    unsigned Opt = 0;
216
217    // This is the __NO_INLINE__ define, which just depends on things like the
218    // optimization level and -fno-inline, not actually whether the backend has
219    // inlining enabled.
220    //
221    // FIXME: This is affected by other options (-fno-inline).
222    Opts.NoInline = !Opt;
223
224//    unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
225//    switch (SSP) {
226//        default:
227//            Diags.Report(diag::err_drv_invalid_value)
228//            << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
229//            break;
230//        case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
231//        case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
232//        case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
233//    }
234}
235
236
237ClangASTContext::ClangASTContext(const char *target_triple) :
238    m_target_triple(),
239    m_ast_context_ap(),
240    m_language_options_ap(),
241    m_source_manager_ap(),
242    m_diagnostic_ap(),
243    m_target_options_ap(),
244    m_target_info_ap(),
245    m_identifier_table_ap(),
246    m_selector_table_ap(),
247    m_builtins_ap()
248{
249    if (target_triple && target_triple[0])
250        m_target_triple.assign (target_triple);
251}
252
253//----------------------------------------------------------------------
254// Destructor
255//----------------------------------------------------------------------
256ClangASTContext::~ClangASTContext()
257{
258    m_builtins_ap.reset();
259    m_selector_table_ap.reset();
260    m_identifier_table_ap.reset();
261    m_target_info_ap.reset();
262    m_target_options_ap.reset();
263    m_diagnostic_ap.reset();
264    m_source_manager_ap.reset();
265    m_language_options_ap.reset();
266    m_ast_context_ap.reset();
267}
268
269
270void
271ClangASTContext::Clear()
272{
273    m_ast_context_ap.reset();
274    m_language_options_ap.reset();
275    m_source_manager_ap.reset();
276    m_diagnostic_ap.reset();
277    m_target_options_ap.reset();
278    m_target_info_ap.reset();
279    m_identifier_table_ap.reset();
280    m_selector_table_ap.reset();
281    m_builtins_ap.reset();
282}
283
284const char *
285ClangASTContext::GetTargetTriple ()
286{
287    return m_target_triple.c_str();
288}
289
290void
291ClangASTContext::SetTargetTriple (const char *target_triple)
292{
293    Clear();
294    m_target_triple.assign(target_triple);
295}
296
297
298ASTContext *
299ClangASTContext::getASTContext()
300{
301    if (m_ast_context_ap.get() == NULL)
302    {
303        m_ast_context_ap.reset(
304            new ASTContext(
305                *getLanguageOptions(),
306                *getSourceManager(),
307                *getTargetInfo(),
308                *getIdentifierTable(),
309                *getSelectorTable(),
310                *getBuiltinContext(),
311                0));
312    }
313    return m_ast_context_ap.get();
314}
315
316Builtin::Context *
317ClangASTContext::getBuiltinContext()
318{
319    if (m_builtins_ap.get() == NULL)
320        m_builtins_ap.reset (new Builtin::Context(*getTargetInfo()));
321    return m_builtins_ap.get();
322}
323
324IdentifierTable *
325ClangASTContext::getIdentifierTable()
326{
327    if (m_identifier_table_ap.get() == NULL)
328        m_identifier_table_ap.reset(new IdentifierTable (*ClangASTContext::getLanguageOptions(), NULL));
329    return m_identifier_table_ap.get();
330}
331
332LangOptions *
333ClangASTContext::getLanguageOptions()
334{
335    if (m_language_options_ap.get() == NULL)
336    {
337        m_language_options_ap.reset(new LangOptions());
338        ParseLangArgs(*m_language_options_ap, IK_ObjCXX);
339//        InitializeLangOptions(*m_language_options_ap, IK_ObjCXX);
340    }
341    return m_language_options_ap.get();
342}
343
344SelectorTable *
345ClangASTContext::getSelectorTable()
346{
347    if (m_selector_table_ap.get() == NULL)
348        m_selector_table_ap.reset (new SelectorTable());
349    return m_selector_table_ap.get();
350}
351
352clang::SourceManager *
353ClangASTContext::getSourceManager()
354{
355    if (m_source_manager_ap.get() == NULL)
356        m_source_manager_ap.reset(new clang::SourceManager(*getDiagnostic()));
357    return m_source_manager_ap.get();
358}
359
360Diagnostic *
361ClangASTContext::getDiagnostic()
362{
363    if (m_diagnostic_ap.get() == NULL)
364        m_diagnostic_ap.reset(new Diagnostic());
365    return m_diagnostic_ap.get();
366}
367
368TargetOptions *
369ClangASTContext::getTargetOptions()
370{
371    if (m_target_options_ap.get() == NULL && !m_target_triple.empty())
372    {
373        m_target_options_ap.reset (new TargetOptions());
374        if (m_target_options_ap.get())
375            m_target_options_ap->Triple = m_target_triple;
376    }
377    return m_target_options_ap.get();
378}
379
380
381TargetInfo *
382ClangASTContext::getTargetInfo()
383{
384    // target_triple should be something like "x86_64-apple-darwin10"
385    if (m_target_info_ap.get() == NULL && !m_target_triple.empty())
386        m_target_info_ap.reset (TargetInfo::CreateTargetInfo(*getDiagnostic(), *getTargetOptions()));
387    return m_target_info_ap.get();
388}
389
390#pragma mark Basic Types
391
392static inline bool
393QualTypeMatchesBitSize(const uint64_t bit_size, ASTContext *ast_context, QualType qual_type)
394{
395    uint64_t qual_type_bit_size = ast_context->getTypeSize(qual_type);
396    if (qual_type_bit_size == bit_size)
397        return true;
398    return false;
399}
400
401clang_type_t
402ClangASTContext::GetBuiltinTypeForEncodingAndBitSize (Encoding encoding, uint32_t bit_size)
403{
404    ASTContext *ast_context = getASTContext();
405
406    assert (ast_context != NULL);
407
408    return GetBuiltinTypeForEncodingAndBitSize (ast_context, encoding, bit_size);
409}
410
411clang_type_t
412ClangASTContext::GetBuiltinTypeForEncodingAndBitSize (ASTContext *ast_context, Encoding encoding, uint32_t bit_size)
413{
414    if (!ast_context)
415        return NULL;
416
417    switch (encoding)
418    {
419    case eEncodingInvalid:
420        if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->VoidPtrTy))
421            return ast_context->VoidPtrTy.getAsOpaquePtr();
422        break;
423
424    case eEncodingUint:
425        if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->UnsignedCharTy))
426            return ast_context->UnsignedCharTy.getAsOpaquePtr();
427        if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->UnsignedShortTy))
428            return ast_context->UnsignedShortTy.getAsOpaquePtr();
429        if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->UnsignedIntTy))
430            return ast_context->UnsignedIntTy.getAsOpaquePtr();
431        if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->UnsignedLongTy))
432            return ast_context->UnsignedLongTy.getAsOpaquePtr();
433        if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->UnsignedLongLongTy))
434            return ast_context->UnsignedLongLongTy.getAsOpaquePtr();
435        if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->UnsignedInt128Ty))
436            return ast_context->UnsignedInt128Ty.getAsOpaquePtr();
437        break;
438
439    case eEncodingSint:
440        if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->CharTy))
441            return ast_context->CharTy.getAsOpaquePtr();
442        if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->ShortTy))
443            return ast_context->ShortTy.getAsOpaquePtr();
444        if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->IntTy))
445            return ast_context->IntTy.getAsOpaquePtr();
446        if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->LongTy))
447            return ast_context->LongTy.getAsOpaquePtr();
448        if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->LongLongTy))
449            return ast_context->LongLongTy.getAsOpaquePtr();
450        if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->Int128Ty))
451            return ast_context->Int128Ty.getAsOpaquePtr();
452        break;
453
454    case eEncodingIEEE754:
455        if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->FloatTy))
456            return ast_context->FloatTy.getAsOpaquePtr();
457        if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->DoubleTy))
458            return ast_context->DoubleTy.getAsOpaquePtr();
459        if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->LongDoubleTy))
460            return ast_context->LongDoubleTy.getAsOpaquePtr();
461        break;
462
463    case eEncodingVector:
464    default:
465        break;
466    }
467
468    return NULL;
469}
470
471clang_type_t
472ClangASTContext::GetBuiltinTypeForDWARFEncodingAndBitSize (const char *type_name, uint32_t dw_ate, uint32_t bit_size)
473{
474    ASTContext *ast_context = getASTContext();
475
476    #define streq(a,b) strcmp(a,b) == 0
477    assert (ast_context != NULL);
478    if (ast_context)
479    {
480        switch (dw_ate)
481        {
482        default:
483            break;
484
485        case DW_ATE_address:
486            if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->VoidPtrTy))
487                return ast_context->VoidPtrTy.getAsOpaquePtr();
488            break;
489
490        case DW_ATE_boolean:
491            if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->BoolTy))
492                return ast_context->BoolTy.getAsOpaquePtr();
493            if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->UnsignedCharTy))
494                return ast_context->UnsignedCharTy.getAsOpaquePtr();
495            if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->UnsignedShortTy))
496                return ast_context->UnsignedShortTy.getAsOpaquePtr();
497            if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->UnsignedIntTy))
498                return ast_context->UnsignedIntTy.getAsOpaquePtr();
499            break;
500
501        case DW_ATE_complex_float:
502            if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->FloatComplexTy))
503                return ast_context->FloatComplexTy.getAsOpaquePtr();
504            if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->DoubleComplexTy))
505                return ast_context->DoubleComplexTy.getAsOpaquePtr();
506            if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->LongDoubleComplexTy))
507                return ast_context->LongDoubleComplexTy.getAsOpaquePtr();
508            break;
509
510        case DW_ATE_float:
511            if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->FloatTy))
512                return ast_context->FloatTy.getAsOpaquePtr();
513            if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->DoubleTy))
514                return ast_context->DoubleTy.getAsOpaquePtr();
515            if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->LongDoubleTy))
516                return ast_context->LongDoubleTy.getAsOpaquePtr();
517            break;
518
519        case DW_ATE_signed:
520            if (type_name)
521            {
522                if (streq(type_name, "int") ||
523                    streq(type_name, "signed int"))
524                {
525                    if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->IntTy))
526                        return ast_context->IntTy.getAsOpaquePtr();
527                    if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->Int128Ty))
528                        return ast_context->Int128Ty.getAsOpaquePtr();
529                }
530
531                if (streq(type_name, "long int") ||
532                    streq(type_name, "long long int") ||
533                    streq(type_name, "signed long long"))
534                {
535                    if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->LongTy))
536                        return ast_context->LongTy.getAsOpaquePtr();
537                    if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->LongLongTy))
538                        return ast_context->LongLongTy.getAsOpaquePtr();
539                }
540
541                if (streq(type_name, "short") ||
542                    streq(type_name, "short int") ||
543                    streq(type_name, "signed short") ||
544                    streq(type_name, "short signed int"))
545                {
546                    if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->ShortTy))
547                        return ast_context->ShortTy.getAsOpaquePtr();
548                }
549
550                if (streq(type_name, "char") ||
551                    streq(type_name, "signed char"))
552                {
553                    if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->CharTy))
554                        return ast_context->CharTy.getAsOpaquePtr();
555                    if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->SignedCharTy))
556                        return ast_context->SignedCharTy.getAsOpaquePtr();
557                }
558
559                if (streq(type_name, "wchar_t"))
560                {
561                    if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->WCharTy))
562                        return ast_context->WCharTy.getAsOpaquePtr();
563                }
564
565            }
566            // We weren't able to match up a type name, just search by size
567            if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->CharTy))
568                return ast_context->CharTy.getAsOpaquePtr();
569            if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->ShortTy))
570                return ast_context->ShortTy.getAsOpaquePtr();
571            if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->IntTy))
572                return ast_context->IntTy.getAsOpaquePtr();
573            if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->LongTy))
574                return ast_context->LongTy.getAsOpaquePtr();
575            if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->LongLongTy))
576                return ast_context->LongLongTy.getAsOpaquePtr();
577            if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->Int128Ty))
578                return ast_context->Int128Ty.getAsOpaquePtr();
579            break;
580
581        case DW_ATE_signed_char:
582            if (type_name)
583            {
584                if (streq(type_name, "signed char"))
585                {
586                    if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->SignedCharTy))
587                        return ast_context->SignedCharTy.getAsOpaquePtr();
588                }
589            }
590            if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->CharTy))
591                return ast_context->CharTy.getAsOpaquePtr();
592            if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->SignedCharTy))
593                return ast_context->SignedCharTy.getAsOpaquePtr();
594            break;
595
596        case DW_ATE_unsigned:
597            if (type_name)
598            {
599                if (streq(type_name, "unsigned int"))
600                {
601                    if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->UnsignedIntTy))
602                        return ast_context->UnsignedIntTy.getAsOpaquePtr();
603                    if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->UnsignedInt128Ty))
604                        return ast_context->UnsignedInt128Ty.getAsOpaquePtr();
605                }
606
607                if (streq(type_name, "unsigned int") ||
608                    streq(type_name, "long unsigned int") ||
609                    streq(type_name, "unsigned long long"))
610                {
611                    if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->UnsignedLongTy))
612                        return ast_context->UnsignedLongTy.getAsOpaquePtr();
613                    if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->UnsignedLongLongTy))
614                        return ast_context->UnsignedLongLongTy.getAsOpaquePtr();
615                }
616
617                if (streq(type_name, "unsigned short") ||
618                    streq(type_name, "short unsigned int"))
619                {
620                    if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->UnsignedShortTy))
621                        return ast_context->UnsignedShortTy.getAsOpaquePtr();
622                }
623                if (streq(type_name, "unsigned char"))
624                {
625                    if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->UnsignedCharTy))
626                        return ast_context->UnsignedCharTy.getAsOpaquePtr();
627                }
628
629            }
630            // We weren't able to match up a type name, just search by size
631            if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->UnsignedCharTy))
632                return ast_context->UnsignedCharTy.getAsOpaquePtr();
633            if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->UnsignedShortTy))
634                return ast_context->UnsignedShortTy.getAsOpaquePtr();
635            if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->UnsignedIntTy))
636                return ast_context->UnsignedIntTy.getAsOpaquePtr();
637            if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->UnsignedLongTy))
638                return ast_context->UnsignedLongTy.getAsOpaquePtr();
639            if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->UnsignedLongLongTy))
640                return ast_context->UnsignedLongLongTy.getAsOpaquePtr();
641            if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->UnsignedInt128Ty))
642                return ast_context->UnsignedInt128Ty.getAsOpaquePtr();
643            break;
644
645        case DW_ATE_unsigned_char:
646            if (QualTypeMatchesBitSize (bit_size, ast_context, ast_context->UnsignedCharTy))
647                return ast_context->UnsignedCharTy.getAsOpaquePtr();
648            break;
649
650        case DW_ATE_imaginary_float:
651            break;
652        }
653    }
654    // This assert should fire for anything that we don't catch above so we know
655    // to fix any issues we run into.
656    assert (!"error: ClangASTContext::GetClangTypeForDWARFEncodingAndSize() contains an unhandled encoding. Fix this ASAP!");
657    return NULL;
658}
659
660clang_type_t
661ClangASTContext::GetBuiltInType_void(ASTContext *ast_context)
662{
663    return ast_context->VoidTy.getAsOpaquePtr();
664}
665
666clang_type_t
667ClangASTContext::GetBuiltInType_objc_id()
668{
669    return getASTContext()->getObjCIdType().getAsOpaquePtr();
670}
671
672clang_type_t
673ClangASTContext::GetBuiltInType_objc_Class()
674{
675    return getASTContext()->getObjCClassType().getAsOpaquePtr();
676}
677
678clang_type_t
679ClangASTContext::GetBuiltInType_objc_selector()
680{
681    return getASTContext()->getObjCSelType().getAsOpaquePtr();
682}
683
684clang_type_t
685ClangASTContext::GetCStringType (bool is_const)
686{
687    QualType char_type(getASTContext()->CharTy);
688
689    if (is_const)
690        char_type.addConst();
691
692    return getASTContext()->getPointerType(char_type).getAsOpaquePtr();
693}
694
695clang_type_t
696ClangASTContext::GetVoidPtrType (bool is_const)
697{
698    return GetVoidPtrType(getASTContext(), is_const);
699}
700
701clang_type_t
702ClangASTContext::GetVoidPtrType (ASTContext *ast_context, bool is_const)
703{
704    QualType void_ptr_type(ast_context->VoidPtrTy);
705
706    if (is_const)
707        void_ptr_type.addConst();
708
709    return void_ptr_type.getAsOpaquePtr();
710}
711
712clang_type_t
713ClangASTContext::CopyType (ASTContext *dest_context,
714                           ASTContext *source_context,
715                           clang_type_t clang_type)
716{
717    Diagnostic diagnostics;
718    FileManager file_manager;
719    ASTImporter importer(diagnostics,
720                         *dest_context, file_manager,
721                         *source_context, file_manager);
722    QualType ret = importer.Import(QualType::getFromOpaquePtr(clang_type));
723    return ret.getAsOpaquePtr();
724}
725
726bool
727ClangASTContext::AreTypesSame(ASTContext *ast_context,
728             clang_type_t type1,
729             clang_type_t type2)
730{
731    return ast_context->hasSameType(QualType::getFromOpaquePtr(type1),
732                                    QualType::getFromOpaquePtr(type2));
733}
734
735#pragma mark CVR modifiers
736
737clang_type_t
738ClangASTContext::AddConstModifier (clang_type_t clang_type)
739{
740    if (clang_type)
741    {
742        QualType result(QualType::getFromOpaquePtr(clang_type));
743        result.addConst();
744        return result.getAsOpaquePtr();
745    }
746    return NULL;
747}
748
749clang_type_t
750ClangASTContext::AddRestrictModifier (clang_type_t clang_type)
751{
752    if (clang_type)
753    {
754        QualType result(QualType::getFromOpaquePtr(clang_type));
755        result.getQualifiers().setRestrict (true);
756        return result.getAsOpaquePtr();
757    }
758    return NULL;
759}
760
761clang_type_t
762ClangASTContext::AddVolatileModifier (clang_type_t clang_type)
763{
764    if (clang_type)
765    {
766        QualType result(QualType::getFromOpaquePtr(clang_type));
767        result.getQualifiers().setVolatile (true);
768        return result.getAsOpaquePtr();
769    }
770    return NULL;
771}
772
773#pragma mark Structure, Unions, Classes
774
775clang_type_t
776ClangASTContext::CreateRecordType (const char *name, int kind, DeclContext *decl_ctx, LanguageType language)
777{
778    ASTContext *ast_context = getASTContext();
779    assert (ast_context != NULL);
780
781    if (decl_ctx == NULL)
782        decl_ctx = ast_context->getTranslationUnitDecl();
783
784
785    if (language == eLanguageTypeObjC)
786    {
787        bool isForwardDecl = false;
788        bool isInternal = false;
789        return CreateObjCClass (name, decl_ctx, isForwardDecl, isInternal);
790    }
791
792    // NOTE: Eventually CXXRecordDecl will be merged back into RecordDecl and
793    // we will need to update this code. I was told to currently always use
794    // the CXXRecordDecl class since we often don't know from debug information
795    // if something is struct or a class, so we default to always use the more
796    // complete definition just in case.
797    CXXRecordDecl *decl = CXXRecordDecl::Create(*ast_context,
798                                                (TagDecl::TagKind)kind,
799                                                decl_ctx,
800                                                SourceLocation(),
801                                                name && name[0] ? &ast_context->Idents.get(name) : NULL);
802
803    return ast_context->getTagDeclType(decl).getAsOpaquePtr();
804}
805
806static bool
807IsOperator (const char *name, OverloadedOperatorKind &op_kind)
808{
809    if (name == NULL || name[0] == '\0')
810        return false;
811
812    if (::strstr(name, "operator ") != name)
813        return false;
814
815    const char *post_op_name = name + 9;
816
817    // This is an operator, set the overloaded operator kind to invalid
818    // in case this is a conversion operator...
819    op_kind = NUM_OVERLOADED_OPERATORS;
820
821    switch (post_op_name[0])
822    {
823    case 'n':
824        if  (strcmp (post_op_name, "new") == 0)
825            op_kind = OO_New;
826        else if (strcmp (post_op_name, "new[]") == 0)
827            op_kind = OO_Array_New;
828        break;
829
830    case 'd':
831        if (strcmp (post_op_name, "delete") == 0)
832            op_kind = OO_Delete;
833        else if (strcmp (post_op_name, "delete[]") == 0)
834            op_kind = OO_Array_Delete;
835        break;
836
837    case '+':
838        if (post_op_name[1] == '\0')
839            op_kind = OO_Plus;
840        else if (post_op_name[2] == '\0')
841        {
842            if (post_op_name[1] == '=')
843                op_kind = OO_PlusEqual;
844            else if (post_op_name[1] == '+')
845                op_kind = OO_PlusPlus;
846        }
847        break;
848
849    case '-':
850        if (post_op_name[1] == '\0')
851            op_kind = OO_Minus;
852        else if (post_op_name[2] == '\0')
853        {
854            switch (post_op_name[1])
855            {
856            case '=': op_kind = OO_MinusEqual; break;
857            case '-': op_kind = OO_MinusMinus; break;
858            case '>': op_kind = OO_Arrow; break;
859            }
860        }
861        else if (post_op_name[3] == '\0')
862        {
863            if (post_op_name[2] == '*')
864                op_kind = OO_ArrowStar; break;
865        }
866        break;
867
868    case '*':
869        if (post_op_name[1] == '\0')
870            op_kind = OO_Star;
871        else if (post_op_name[1] == '=' && post_op_name[2] == '\0')
872            op_kind = OO_StarEqual;
873        break;
874
875    case '/':
876        if (post_op_name[1] == '\0')
877            op_kind = OO_Slash;
878        else if (post_op_name[1] == '=' && post_op_name[2] == '\0')
879            op_kind = OO_SlashEqual;
880        break;
881
882    case '%':
883        if (post_op_name[1] == '\0')
884            op_kind = OO_Percent;
885        else if (post_op_name[1] == '=' && post_op_name[2] == '\0')
886            op_kind = OO_PercentEqual;
887        break;
888
889
890    case '^':
891        if (post_op_name[1] == '\0')
892            op_kind = OO_Caret;
893        else if (post_op_name[1] == '=' && post_op_name[2] == '\0')
894            op_kind = OO_CaretEqual;
895        break;
896
897    case '&':
898        if (post_op_name[1] == '\0')
899            op_kind = OO_Amp;
900        else if (post_op_name[2] == '\0')
901        {
902            switch (post_op_name[1])
903            {
904            case '=': op_kind = OO_AmpEqual; break;
905            case '&': op_kind = OO_AmpAmp; break;
906            }
907        }
908        break;
909
910    case '|':
911        if (post_op_name[1] == '\0')
912            op_kind = OO_Pipe;
913        else if (post_op_name[2] == '\0')
914        {
915            switch (post_op_name[1])
916            {
917            case '=': op_kind = OO_PipeEqual; break;
918            case '|': op_kind = OO_PipePipe; break;
919            }
920        }
921        break;
922
923    case '~':
924        if (post_op_name[1] == '\0')
925            op_kind = OO_Tilde;
926        break;
927
928    case '!':
929        if (post_op_name[1] == '\0')
930            op_kind = OO_Exclaim;
931        else if (post_op_name[1] == '=' && post_op_name[2] == '\0')
932            op_kind = OO_ExclaimEqual;
933        break;
934
935    case '=':
936        if (post_op_name[1] == '\0')
937            op_kind = OO_Equal;
938        else if (post_op_name[1] == '=' && post_op_name[2] == '\0')
939            op_kind = OO_EqualEqual;
940        break;
941
942    case '<':
943        if (post_op_name[1] == '\0')
944            op_kind = OO_Less;
945        else if (post_op_name[2] == '\0')
946        {
947            switch (post_op_name[1])
948            {
949            case '<': op_kind = OO_LessLess; break;
950            case '=': op_kind = OO_LessEqual; break;
951            }
952        }
953        else if (post_op_name[3] == '\0')
954        {
955            if (post_op_name[2] == '=')
956                op_kind = OO_LessLessEqual;
957        }
958        break;
959
960    case '>':
961        if (post_op_name[1] == '\0')
962            op_kind = OO_Greater;
963        else if (post_op_name[2] == '\0')
964        {
965            switch (post_op_name[1])
966            {
967            case '>': op_kind = OO_GreaterGreater; break;
968            case '=': op_kind = OO_GreaterEqual; break;
969            }
970        }
971        else if (post_op_name[1] == '>' &&
972                 post_op_name[2] == '=' &&
973                 post_op_name[3] == '\0')
974        {
975                op_kind = OO_GreaterGreaterEqual;
976        }
977        break;
978
979    case ',':
980        if (post_op_name[1] == '\0')
981            op_kind = OO_Comma;
982        break;
983
984    case '(':
985        if (post_op_name[1] == ')' && post_op_name[2] == '\0')
986            op_kind = OO_Call;
987        break;
988
989    case '[':
990        if (post_op_name[1] == ']' && post_op_name[2] == '\0')
991            op_kind = OO_Subscript;
992        break;
993    }
994
995    return true;
996}
997CXXMethodDecl *
998ClangASTContext::AddMethodToCXXRecordType
999(
1000    ASTContext *ast_context,
1001    clang_type_t record_opaque_type,
1002    const char *name,
1003    clang_type_t method_opaque_type,
1004    lldb::AccessType access,
1005    bool is_virtual,
1006    bool is_static,
1007    bool is_inline,
1008    bool is_explicit
1009)
1010{
1011    if (!record_opaque_type || !method_opaque_type || !name)
1012        return NULL;
1013
1014    assert(ast_context);
1015
1016    IdentifierTable *identifier_table = &ast_context->Idents;
1017
1018    assert(identifier_table);
1019
1020    QualType record_qual_type(QualType::getFromOpaquePtr(record_opaque_type));
1021
1022    clang::Type *clang_type(record_qual_type.getTypePtr());
1023
1024    if (clang_type == NULL)
1025        return NULL;
1026
1027    RecordType *record_clang_type(dyn_cast<RecordType>(clang_type));
1028
1029    if (record_clang_type == NULL)
1030        return NULL;
1031
1032    RecordDecl *record_decl = record_clang_type->getDecl();
1033
1034    if (record_decl == NULL)
1035        return NULL;
1036
1037    CXXRecordDecl *cxx_record_decl = dyn_cast<CXXRecordDecl>(record_decl);
1038
1039    if (cxx_record_decl == NULL)
1040        return NULL;
1041
1042    QualType method_qual_type (QualType::getFromOpaquePtr (method_opaque_type));
1043
1044    CXXMethodDecl *cxx_method_decl = NULL;
1045
1046    DeclarationName decl_name (&identifier_table->get(name));
1047
1048    const bool is_implicitly_declared = false;
1049
1050    clang::FunctionType *function_Type = dyn_cast<FunctionType>(method_qual_type.getTypePtr());
1051
1052    if (function_Type == NULL)
1053        return NULL;
1054
1055    FunctionProtoType *method_function_prototype (dyn_cast<FunctionProtoType>(function_Type));
1056
1057    if (!method_function_prototype)
1058        return NULL;
1059
1060    unsigned int num_params = method_function_prototype->getNumArgs();
1061
1062    if (name[0] == '~')
1063    {
1064        cxx_method_decl = CXXDestructorDecl::Create (*ast_context,
1065                                                     cxx_record_decl,
1066                                                     DeclarationNameInfo (ast_context->DeclarationNames.getCXXDestructorName (ast_context->getCanonicalType (record_qual_type)), SourceLocation()),
1067                                                     method_qual_type,
1068                                                     is_inline,
1069                                                     is_implicitly_declared);
1070    }
1071    else if (decl_name == record_decl->getDeclName())
1072    {
1073        cxx_method_decl = CXXConstructorDecl::Create (*ast_context,
1074                                                      cxx_record_decl,
1075                                                      DeclarationNameInfo (ast_context->DeclarationNames.getCXXConstructorName (ast_context->getCanonicalType (record_qual_type)), SourceLocation()),
1076                                                      method_qual_type,
1077                                                      NULL, // TypeSourceInfo *
1078                                                      is_explicit,
1079                                                      is_inline,
1080                                                      is_implicitly_declared);
1081    }
1082    else
1083    {
1084
1085        OverloadedOperatorKind op_kind = NUM_OVERLOADED_OPERATORS;
1086        if (IsOperator (name, op_kind))
1087        {
1088            if (op_kind != NUM_OVERLOADED_OPERATORS)
1089            {
1090                cxx_method_decl = CXXMethodDecl::Create (*ast_context,
1091                                                         cxx_record_decl,
1092                                                         DeclarationNameInfo (ast_context->DeclarationNames.getCXXOperatorName (op_kind), SourceLocation()),
1093                                                         method_qual_type,
1094                                                         NULL, // TypeSourceInfo *
1095                                                         is_static,
1096                                                         SC_None,
1097                                                         is_inline);
1098            }
1099            else if (num_params == 0)
1100            {
1101                // Conversion operators don't take params...
1102                cxx_method_decl = CXXConversionDecl::Create (*ast_context,
1103                                                             cxx_record_decl,
1104                                                             DeclarationNameInfo (ast_context->DeclarationNames.getCXXConversionFunctionName (ast_context->getCanonicalType (function_Type->getResultType())), SourceLocation()),
1105                                                             method_qual_type,
1106                                                             NULL, // TypeSourceInfo *
1107                                                             is_inline,
1108                                                             is_explicit);
1109            }
1110        }
1111
1112        if (cxx_method_decl == NULL)
1113        {
1114            cxx_method_decl = CXXMethodDecl::Create (*ast_context,
1115                                                     cxx_record_decl,
1116                                                     DeclarationNameInfo (decl_name, SourceLocation()),
1117                                                     method_qual_type,
1118                                                     NULL, // TypeSourceInfo *
1119                                                     is_static,
1120                                                     SC_None,
1121                                                     is_inline);
1122        }
1123    }
1124
1125    AccessSpecifier access_specifier = ConvertAccessTypeToAccessSpecifier (access);
1126
1127    cxx_method_decl->setAccess (access_specifier);
1128    cxx_method_decl->setVirtualAsWritten (is_virtual);
1129
1130    // Populate the method decl with parameter decls
1131
1132    ParmVarDecl *params[num_params];
1133
1134    for (int param_index = 0;
1135         param_index < num_params;
1136         ++param_index)
1137    {
1138        params[param_index] = ParmVarDecl::Create (*ast_context,
1139                                                   cxx_method_decl,
1140                                                   SourceLocation(),
1141                                                   NULL, // anonymous
1142                                                   method_function_prototype->getArgType(param_index),
1143                                                   NULL,
1144                                                   SC_None,
1145                                                   SC_None,
1146                                                   NULL);
1147    }
1148
1149    cxx_method_decl->setParams (params, num_params);
1150
1151    cxx_record_decl->addDecl (cxx_method_decl);
1152
1153    return cxx_method_decl;
1154}
1155
1156bool
1157ClangASTContext::AddFieldToRecordType
1158(
1159    ASTContext *ast_context,
1160    clang_type_t record_clang_type,
1161    const char *name,
1162    clang_type_t field_type,
1163    AccessType access,
1164    uint32_t bitfield_bit_size
1165)
1166{
1167    if (record_clang_type == NULL || field_type == NULL)
1168        return false;
1169
1170    IdentifierTable *identifier_table = &ast_context->Idents;
1171
1172    assert (ast_context != NULL);
1173    assert (identifier_table != NULL);
1174
1175    QualType record_qual_type(QualType::getFromOpaquePtr(record_clang_type));
1176
1177    clang::Type *clang_type = record_qual_type.getTypePtr();
1178    if (clang_type)
1179    {
1180        const RecordType *record_type = dyn_cast<RecordType>(clang_type);
1181
1182        if (record_type)
1183        {
1184            RecordDecl *record_decl = record_type->getDecl();
1185
1186            clang::Expr *bit_width = NULL;
1187            if (bitfield_bit_size != 0)
1188            {
1189                APInt bitfield_bit_size_apint(ast_context->getTypeSize(ast_context->IntTy), bitfield_bit_size);
1190                bit_width = new (*ast_context)IntegerLiteral (*ast_context, bitfield_bit_size_apint, ast_context->IntTy, SourceLocation());
1191            }
1192            FieldDecl *field = FieldDecl::Create (*ast_context,
1193                                                  record_decl,
1194                                                  SourceLocation(),
1195                                                  name ? &identifier_table->get(name) : NULL, // Identifier
1196                                                  QualType::getFromOpaquePtr(field_type), // Field type
1197                                                  NULL,       // DeclaratorInfo *
1198                                                  bit_width,  // BitWidth
1199                                                  false);     // Mutable
1200
1201            field->setAccess (ConvertAccessTypeToAccessSpecifier (access));
1202
1203            if (field)
1204            {
1205                record_decl->addDecl(field);
1206            }
1207        }
1208        else
1209        {
1210            ObjCObjectType *objc_class_type = dyn_cast<ObjCObjectType>(clang_type);
1211            if (objc_class_type)
1212            {
1213                bool is_synthesized = false;
1214                ClangASTContext::AddObjCClassIVar (ast_context,
1215                                                   record_clang_type,
1216                                                   name,
1217                                                   field_type,
1218                                                   access,
1219                                                   bitfield_bit_size,
1220                                                   is_synthesized);
1221            }
1222        }
1223    }
1224    return false;
1225}
1226
1227bool
1228ClangASTContext::FieldIsBitfield (FieldDecl* field, uint32_t& bitfield_bit_size)
1229{
1230    return FieldIsBitfield(getASTContext(), field, bitfield_bit_size);
1231}
1232
1233bool
1234ClangASTContext::FieldIsBitfield
1235(
1236    ASTContext *ast_context,
1237    FieldDecl* field,
1238    uint32_t& bitfield_bit_size
1239)
1240{
1241    if (ast_context == NULL || field == NULL)
1242        return false;
1243
1244    if (field->isBitField())
1245    {
1246        Expr* bit_width_expr = field->getBitWidth();
1247        if (bit_width_expr)
1248        {
1249            llvm::APSInt bit_width_apsint;
1250            if (bit_width_expr->isIntegerConstantExpr(bit_width_apsint, *ast_context))
1251            {
1252                bitfield_bit_size = bit_width_apsint.getLimitedValue(UINT32_MAX);
1253                return true;
1254            }
1255        }
1256    }
1257    return false;
1258}
1259
1260bool
1261ClangASTContext::RecordHasFields (const RecordDecl *record_decl)
1262{
1263    if (record_decl == NULL)
1264        return false;
1265
1266    if (!record_decl->field_empty())
1267        return true;
1268
1269    // No fields, lets check this is a CXX record and check the base classes
1270    const CXXRecordDecl *cxx_record_decl = dyn_cast<CXXRecordDecl>(record_decl);
1271    if (cxx_record_decl)
1272    {
1273        CXXRecordDecl::base_class_const_iterator base_class, base_class_end;
1274        for (base_class = cxx_record_decl->bases_begin(), base_class_end = cxx_record_decl->bases_end();
1275             base_class != base_class_end;
1276             ++base_class)
1277        {
1278            const CXXRecordDecl *base_class_decl = cast<CXXRecordDecl>(base_class->getType()->getAs<RecordType>()->getDecl());
1279            if (RecordHasFields(base_class_decl))
1280                return true;
1281        }
1282    }
1283    return false;
1284}
1285
1286void
1287ClangASTContext::SetDefaultAccessForRecordFields (clang_type_t clang_qual_type, int default_accessibility, int *assigned_accessibilities, size_t num_assigned_accessibilities)
1288{
1289    if (clang_qual_type)
1290    {
1291        QualType qual_type(QualType::getFromOpaquePtr(clang_qual_type));
1292        clang::Type *clang_type = qual_type.getTypePtr();
1293        if (clang_type)
1294        {
1295            RecordType *record_type = dyn_cast<RecordType>(clang_type);
1296            if (record_type)
1297            {
1298                RecordDecl *record_decl = record_type->getDecl();
1299                if (record_decl)
1300                {
1301                    uint32_t field_idx;
1302                    RecordDecl::field_iterator field, field_end;
1303                    for (field = record_decl->field_begin(), field_end = record_decl->field_end(), field_idx = 0;
1304                         field != field_end;
1305                         ++field, ++field_idx)
1306                    {
1307                        // If no accessibility was assigned, assign the correct one
1308                        if (field_idx < num_assigned_accessibilities && assigned_accessibilities[field_idx] == clang::AS_none)
1309                            field->setAccess ((AccessSpecifier)default_accessibility);
1310                    }
1311                }
1312            }
1313        }
1314    }
1315}
1316
1317#pragma mark C++ Base Classes
1318
1319CXXBaseSpecifier *
1320ClangASTContext::CreateBaseClassSpecifier (clang_type_t base_class_type, AccessType access, bool is_virtual, bool base_of_class)
1321{
1322    if (base_class_type)
1323        return new CXXBaseSpecifier (SourceRange(),
1324                                     is_virtual,
1325                                     base_of_class,
1326                                     ConvertAccessTypeToAccessSpecifier (access),
1327                                     getASTContext()->CreateTypeSourceInfo (QualType::getFromOpaquePtr(base_class_type)));
1328    return NULL;
1329}
1330
1331void
1332ClangASTContext::DeleteBaseClassSpecifiers (CXXBaseSpecifier **base_classes, unsigned num_base_classes)
1333{
1334    for (unsigned i=0; i<num_base_classes; ++i)
1335    {
1336        delete base_classes[i];
1337        base_classes[i] = NULL;
1338    }
1339}
1340
1341bool
1342ClangASTContext::SetBaseClassesForClassType (clang_type_t class_clang_type, CXXBaseSpecifier const * const *base_classes, unsigned num_base_classes)
1343{
1344    if (class_clang_type)
1345    {
1346        clang::Type *clang_type = QualType::getFromOpaquePtr(class_clang_type).getTypePtr();
1347        if (clang_type)
1348        {
1349            RecordType *record_type = dyn_cast<RecordType>(clang_type);
1350            if (record_type)
1351            {
1352                CXXRecordDecl *cxx_record_decl = dyn_cast<CXXRecordDecl>(record_type->getDecl());
1353                if (cxx_record_decl)
1354                {
1355                    cxx_record_decl->setBases(base_classes, num_base_classes);
1356                    return true;
1357                }
1358            }
1359        }
1360    }
1361    return false;
1362}
1363#pragma mark Objective C Classes
1364
1365clang_type_t
1366ClangASTContext::CreateObjCClass
1367(
1368    const char *name,
1369    DeclContext *decl_ctx,
1370    bool isForwardDecl,
1371    bool isInternal
1372)
1373{
1374    ASTContext *ast_context = getASTContext();
1375    assert (ast_context != NULL);
1376    assert (name && name[0]);
1377    if (decl_ctx == NULL)
1378        decl_ctx = ast_context->getTranslationUnitDecl();
1379
1380    // NOTE: Eventually CXXRecordDecl will be merged back into RecordDecl and
1381    // we will need to update this code. I was told to currently always use
1382    // the CXXRecordDecl class since we often don't know from debug information
1383    // if something is struct or a class, so we default to always use the more
1384    // complete definition just in case.
1385    ObjCInterfaceDecl *decl = ObjCInterfaceDecl::Create (*ast_context,
1386                                                         decl_ctx,
1387                                                         SourceLocation(),
1388                                                         &ast_context->Idents.get(name),
1389                                                         SourceLocation(),
1390                                                         isForwardDecl,
1391                                                         isInternal);
1392
1393    return ast_context->getObjCInterfaceType(decl).getAsOpaquePtr();
1394}
1395
1396bool
1397ClangASTContext::SetObjCSuperClass (clang_type_t class_opaque_type, clang_type_t super_opaque_type)
1398{
1399    if (class_opaque_type && super_opaque_type)
1400    {
1401        QualType class_qual_type(QualType::getFromOpaquePtr(class_opaque_type));
1402        QualType super_qual_type(QualType::getFromOpaquePtr(super_opaque_type));
1403        clang::Type *class_type = class_qual_type.getTypePtr();
1404        clang::Type *super_type = super_qual_type.getTypePtr();
1405        if (class_type && super_type)
1406        {
1407            ObjCObjectType *objc_class_type = dyn_cast<ObjCObjectType>(class_type);
1408            ObjCObjectType *objc_super_type = dyn_cast<ObjCObjectType>(super_type);
1409            if (objc_class_type && objc_super_type)
1410            {
1411                ObjCInterfaceDecl *class_interface_decl = objc_class_type->getInterface();
1412                ObjCInterfaceDecl *super_interface_decl = objc_super_type->getInterface();
1413                if (class_interface_decl && super_interface_decl)
1414                {
1415                    class_interface_decl->setSuperClass(super_interface_decl);
1416                    return true;
1417                }
1418            }
1419        }
1420    }
1421    return false;
1422}
1423
1424
1425bool
1426ClangASTContext::AddObjCClassIVar
1427(
1428    ASTContext *ast_context,
1429    clang_type_t class_opaque_type,
1430    const char *name,
1431    clang_type_t ivar_opaque_type,
1432    AccessType access,
1433    uint32_t bitfield_bit_size,
1434    bool is_synthesized
1435)
1436{
1437    if (class_opaque_type == NULL || ivar_opaque_type == NULL)
1438        return false;
1439
1440    IdentifierTable *identifier_table = &ast_context->Idents;
1441
1442    assert (ast_context != NULL);
1443    assert (identifier_table != NULL);
1444
1445    QualType class_qual_type(QualType::getFromOpaquePtr(class_opaque_type));
1446
1447    clang::Type *class_type = class_qual_type.getTypePtr();
1448    if (class_type)
1449    {
1450        ObjCObjectType *objc_class_type = dyn_cast<ObjCObjectType>(class_type);
1451
1452        if (objc_class_type)
1453        {
1454            ObjCInterfaceDecl *class_interface_decl = objc_class_type->getInterface();
1455
1456            if (class_interface_decl)
1457            {
1458                clang::Expr *bit_width = NULL;
1459                if (bitfield_bit_size != 0)
1460                {
1461                    APInt bitfield_bit_size_apint(ast_context->getTypeSize(ast_context->IntTy), bitfield_bit_size);
1462                    bit_width = new (*ast_context)IntegerLiteral (*ast_context, bitfield_bit_size_apint, ast_context->IntTy, SourceLocation());
1463                }
1464
1465                ObjCIvarDecl *field = ObjCIvarDecl::Create (*ast_context,
1466                                                            class_interface_decl,
1467                                                            SourceLocation(),
1468                                                            &identifier_table->get(name), // Identifier
1469                                                            QualType::getFromOpaquePtr(ivar_opaque_type), // Field type
1470                                                            NULL, // TypeSourceInfo *
1471                                                            ConvertAccessTypeToObjCIvarAccessControl (access),
1472                                                            bit_width,
1473                                                            is_synthesized);
1474
1475                if (field)
1476                {
1477                    class_interface_decl->addDecl(field);
1478                    return true;
1479                }
1480            }
1481        }
1482    }
1483    return false;
1484}
1485
1486
1487bool
1488ClangASTContext::ObjCTypeHasIVars (clang_type_t class_opaque_type, bool check_superclass)
1489{
1490    QualType class_qual_type(QualType::getFromOpaquePtr(class_opaque_type));
1491
1492    clang::Type *class_type = class_qual_type.getTypePtr();
1493    if (class_type)
1494    {
1495        ObjCObjectType *objc_class_type = dyn_cast<ObjCObjectType>(class_type);
1496
1497        if (objc_class_type)
1498            return ObjCDeclHasIVars (objc_class_type->getInterface(), check_superclass);
1499    }
1500    return false;
1501}
1502
1503bool
1504ClangASTContext::ObjCDeclHasIVars (ObjCInterfaceDecl *class_interface_decl, bool check_superclass)
1505{
1506    while (class_interface_decl)
1507    {
1508        if (class_interface_decl->ivar_size() > 0)
1509            return true;
1510
1511        if (check_superclass)
1512            class_interface_decl = class_interface_decl->getSuperClass();
1513        else
1514            break;
1515    }
1516    return false;
1517}
1518
1519ObjCMethodDecl *
1520ClangASTContext::AddMethodToObjCObjectType
1521(
1522    ASTContext *ast_context,
1523    clang_type_t class_opaque_type,
1524    const char *name,  // the full symbol name as seen in the symbol table ("-[NString stringWithCString:]")
1525    clang_type_t method_opaque_type,
1526    lldb::AccessType access
1527)
1528{
1529    if (class_opaque_type == NULL || method_opaque_type == NULL)
1530        return NULL;
1531
1532    IdentifierTable *identifier_table = &ast_context->Idents;
1533
1534    assert (ast_context != NULL);
1535    assert (identifier_table != NULL);
1536
1537    QualType class_qual_type(QualType::getFromOpaquePtr(class_opaque_type));
1538
1539    clang::Type *class_type = class_qual_type.getTypePtr();
1540    if (class_type == NULL)
1541        return NULL;
1542
1543    ObjCObjectType *objc_class_type = dyn_cast<ObjCObjectType>(class_type);
1544
1545    if (objc_class_type == NULL)
1546        return NULL;
1547
1548    ObjCInterfaceDecl *class_interface_decl = objc_class_type->getInterface();
1549
1550    if (class_interface_decl == NULL)
1551        return NULL;
1552
1553    const char *selector_start = ::strchr (name, ' ');
1554    if (selector_start == NULL)
1555        return NULL;
1556
1557    selector_start++;
1558    if (!(::isalpha (selector_start[0]) || selector_start[0] == '_'))
1559        return NULL;
1560    llvm::SmallVector<IdentifierInfo *, 12> selector_idents;
1561
1562    size_t len;
1563    const char *start;
1564    for (start = selector_start, len = ::strcspn(start, ":]");
1565         start && *start != '\0' && *start != ']';
1566         start += len + 1)
1567    {
1568        selector_idents.push_back (&identifier_table->get (StringRef (start, len)));
1569    }
1570
1571
1572    if (selector_idents.size() == 0)
1573        return 0;
1574
1575    clang::Selector method_selector = ast_context->Selectors.getSelector (selector_idents.size(),
1576                                                                          selector_idents.data());
1577
1578    QualType method_qual_type (QualType::getFromOpaquePtr (method_opaque_type));
1579
1580    // Populate the method decl with parameter decls
1581    clang::Type *method_type(method_qual_type.getTypePtr());
1582
1583    if (method_type == NULL)
1584        return NULL;
1585
1586    FunctionProtoType *method_function_prototype (dyn_cast<FunctionProtoType>(method_type));
1587
1588    if (!method_function_prototype)
1589        return NULL;
1590
1591
1592    bool is_variadic = false;
1593    bool is_synthesized = false;
1594    bool is_defined = false;
1595    ObjCMethodDecl::ImplementationControl imp_control = ObjCMethodDecl::None;
1596
1597    const unsigned num_args = method_function_prototype->getNumArgs();
1598
1599    ObjCMethodDecl *objc_method_decl = ObjCMethodDecl::Create (*ast_context,
1600                                                               SourceLocation(), // beginLoc,
1601                                                               SourceLocation(), // endLoc,
1602                                                               method_selector,
1603                                                               method_function_prototype->getResultType(),
1604                                                               NULL, // TypeSourceInfo *ResultTInfo,
1605                                                               GetDeclContextForType (class_opaque_type),
1606                                                               name[0] == '-',
1607                                                               is_variadic,
1608                                                               is_synthesized,
1609                                                               is_defined,
1610                                                               imp_control,
1611                                                               num_args);
1612
1613
1614    if (objc_method_decl == NULL)
1615        return NULL;
1616
1617    if (num_args > 0)
1618    {
1619        llvm::SmallVector<ParmVarDecl *, 12> params;
1620
1621        for (int param_index = 0; param_index < num_args; ++param_index)
1622        {
1623            params.push_back (ParmVarDecl::Create (*ast_context,
1624                                                   objc_method_decl,
1625                                                   SourceLocation(),
1626                                                   NULL, // anonymous
1627                                                   method_function_prototype->getArgType(param_index),
1628                                                   NULL,
1629                                                   SC_Auto,
1630                                                   SC_Auto,
1631                                                   NULL));
1632        }
1633
1634        objc_method_decl->setMethodParams(*ast_context, params.data(), params.size(), num_args);
1635    }
1636
1637    class_interface_decl->addDecl (objc_method_decl);
1638
1639
1640    return objc_method_decl;
1641}
1642
1643
1644
1645#pragma mark Aggregate Types
1646
1647bool
1648ClangASTContext::IsAggregateType (clang_type_t clang_type)
1649{
1650    if (clang_type == NULL)
1651        return false;
1652
1653    QualType qual_type (QualType::getFromOpaquePtr(clang_type));
1654
1655    if (qual_type->isAggregateType ())
1656        return true;
1657
1658    const clang::Type::TypeClass type_class = qual_type->getTypeClass();
1659    switch (type_class)
1660    {
1661    case clang::Type::IncompleteArray:
1662    case clang::Type::VariableArray:
1663    case clang::Type::ConstantArray:
1664    case clang::Type::ExtVector:
1665    case clang::Type::Vector:
1666    case clang::Type::Record:
1667    case clang::Type::ObjCObject:
1668    case clang::Type::ObjCInterface:
1669        return true;
1670
1671    case clang::Type::Typedef:
1672        return ClangASTContext::IsAggregateType (cast<TypedefType>(qual_type)->LookThroughTypedefs().getAsOpaquePtr());
1673
1674    default:
1675        break;
1676    }
1677    // The clang type does have a value
1678    return false;
1679}
1680
1681uint32_t
1682ClangASTContext::GetNumChildren (clang_type_t clang_qual_type, bool omit_empty_base_classes)
1683{
1684    if (clang_qual_type == NULL)
1685        return 0;
1686
1687    uint32_t num_children = 0;
1688    QualType qual_type(QualType::getFromOpaquePtr(clang_qual_type));
1689    const clang::Type::TypeClass type_class = qual_type->getTypeClass();
1690    switch (type_class)
1691    {
1692    case clang::Type::Builtin:
1693        switch (cast<clang::BuiltinType>(qual_type)->getKind())
1694        {
1695        case clang::BuiltinType::ObjCId:    // Child is Class
1696        case clang::BuiltinType::ObjCClass: // child is Class
1697        case clang::BuiltinType::ObjCSel:   // child is const char *
1698            num_children = 1;
1699
1700        default:
1701            break;
1702        }
1703        break;
1704
1705    case clang::Type::Record:
1706        {
1707            const RecordType *record_type = cast<RecordType>(qual_type.getTypePtr());
1708            const RecordDecl *record_decl = record_type->getDecl();
1709            assert(record_decl);
1710            const CXXRecordDecl *cxx_record_decl = dyn_cast<CXXRecordDecl>(record_decl);
1711            if (cxx_record_decl)
1712            {
1713                if (omit_empty_base_classes)
1714                {
1715                    // Check each base classes to see if it or any of its
1716                    // base classes contain any fields. This can help
1717                    // limit the noise in variable views by not having to
1718                    // show base classes that contain no members.
1719                    CXXRecordDecl::base_class_const_iterator base_class, base_class_end;
1720                    for (base_class = cxx_record_decl->bases_begin(), base_class_end = cxx_record_decl->bases_end();
1721                         base_class != base_class_end;
1722                         ++base_class)
1723                    {
1724                        const CXXRecordDecl *base_class_decl = cast<CXXRecordDecl>(base_class->getType()->getAs<RecordType>()->getDecl());
1725
1726                        // Skip empty base classes
1727                        if (RecordHasFields(base_class_decl) == false)
1728                            continue;
1729
1730                        num_children++;
1731                    }
1732                }
1733                else
1734                {
1735                    // Include all base classes
1736                    num_children += cxx_record_decl->getNumBases();
1737                }
1738
1739            }
1740            RecordDecl::field_iterator field, field_end;
1741            for (field = record_decl->field_begin(), field_end = record_decl->field_end(); field != field_end; ++field)
1742                ++num_children;
1743        }
1744        break;
1745
1746    case clang::Type::ObjCObject:
1747    case clang::Type::ObjCInterface:
1748        {
1749            ObjCObjectType *objc_class_type = dyn_cast<ObjCObjectType>(qual_type.getTypePtr());
1750            assert (objc_class_type);
1751            if (objc_class_type)
1752            {
1753                ObjCInterfaceDecl *class_interface_decl = objc_class_type->getInterface();
1754
1755                if (class_interface_decl)
1756                {
1757
1758                    ObjCInterfaceDecl *superclass_interface_decl = class_interface_decl->getSuperClass();
1759                    if (superclass_interface_decl)
1760                    {
1761                        if (omit_empty_base_classes)
1762                        {
1763                            if (ClangASTContext::ObjCDeclHasIVars (superclass_interface_decl, true))
1764                                ++num_children;
1765                        }
1766                        else
1767                            ++num_children;
1768                    }
1769
1770                    num_children += class_interface_decl->ivar_size();
1771                }
1772            }
1773        }
1774        break;
1775
1776    case clang::Type::ObjCObjectPointer:
1777        {
1778            ObjCObjectPointerType *pointer_type = cast<ObjCObjectPointerType>(qual_type.getTypePtr());
1779            QualType pointee_type = pointer_type->getPointeeType();
1780            uint32_t num_pointee_children = ClangASTContext::GetNumChildren (pointee_type.getAsOpaquePtr(),
1781                                                                             omit_empty_base_classes);
1782            // If this type points to a simple type, then it has 1 child
1783            if (num_pointee_children == 0)
1784                num_children = 1;
1785            else
1786                num_children = num_pointee_children;
1787        }
1788        break;
1789
1790    case clang::Type::ConstantArray:
1791        num_children = cast<ConstantArrayType>(qual_type.getTypePtr())->getSize().getLimitedValue();
1792        break;
1793
1794    case clang::Type::Pointer:
1795        {
1796            PointerType *pointer_type = cast<PointerType>(qual_type.getTypePtr());
1797            QualType pointee_type = pointer_type->getPointeeType();
1798            uint32_t num_pointee_children = ClangASTContext::GetNumChildren (pointee_type.getAsOpaquePtr(),
1799                                                                             omit_empty_base_classes);
1800            // If this type points to a simple type, then it has 1 child
1801            if (num_pointee_children == 0)
1802                num_children = 1;
1803            else
1804                num_children = num_pointee_children;
1805        }
1806        break;
1807
1808    case clang::Type::Typedef:
1809        num_children = ClangASTContext::GetNumChildren (cast<TypedefType>(qual_type)->LookThroughTypedefs().getAsOpaquePtr(), omit_empty_base_classes);
1810        break;
1811
1812    default:
1813        break;
1814    }
1815    return num_children;
1816}
1817
1818
1819clang_type_t
1820ClangASTContext::GetChildClangTypeAtIndex
1821(
1822    const char *parent_name,
1823    clang_type_t parent_clang_type,
1824    uint32_t idx,
1825    bool transparent_pointers,
1826    bool omit_empty_base_classes,
1827    std::string& child_name,
1828    uint32_t &child_byte_size,
1829    int32_t &child_byte_offset,
1830    uint32_t &child_bitfield_bit_size,
1831    uint32_t &child_bitfield_bit_offset
1832)
1833{
1834    if (parent_clang_type)
1835
1836        return GetChildClangTypeAtIndex (getASTContext(),
1837                                         parent_name,
1838                                         parent_clang_type,
1839                                         idx,
1840                                         transparent_pointers,
1841                                         omit_empty_base_classes,
1842                                         child_name,
1843                                         child_byte_size,
1844                                         child_byte_offset,
1845                                         child_bitfield_bit_size,
1846                                         child_bitfield_bit_offset);
1847    return NULL;
1848}
1849
1850clang_type_t
1851ClangASTContext::GetChildClangTypeAtIndex
1852(
1853    ASTContext *ast_context,
1854    const char *parent_name,
1855    clang_type_t parent_clang_type,
1856    uint32_t idx,
1857    bool transparent_pointers,
1858    bool omit_empty_base_classes,
1859    std::string& child_name,
1860    uint32_t &child_byte_size,
1861    int32_t &child_byte_offset,
1862    uint32_t &child_bitfield_bit_size,
1863    uint32_t &child_bitfield_bit_offset
1864)
1865{
1866    if (parent_clang_type == NULL)
1867        return NULL;
1868
1869    if (idx < ClangASTContext::GetNumChildren (parent_clang_type, omit_empty_base_classes))
1870    {
1871        uint32_t bit_offset;
1872        child_bitfield_bit_size = 0;
1873        child_bitfield_bit_offset = 0;
1874        QualType parent_qual_type(QualType::getFromOpaquePtr(parent_clang_type));
1875        const clang::Type::TypeClass parent_type_class = parent_qual_type->getTypeClass();
1876        switch (parent_type_class)
1877        {
1878        case clang::Type::Builtin:
1879            switch (cast<clang::BuiltinType>(parent_qual_type)->getKind())
1880            {
1881            case clang::BuiltinType::ObjCId:
1882            case clang::BuiltinType::ObjCClass:
1883                return ast_context->ObjCBuiltinClassTy.getAsOpaquePtr();
1884
1885            case clang::BuiltinType::ObjCSel:
1886                {
1887                    QualType char_type(ast_context->CharTy);
1888                    char_type.addConst();
1889                    return ast_context->getPointerType(char_type).getAsOpaquePtr();
1890                }
1891                break;
1892
1893            default:
1894                break;
1895            }
1896            break;
1897
1898
1899        case clang::Type::Record:
1900            {
1901                const RecordType *record_type = cast<RecordType>(parent_qual_type.getTypePtr());
1902                const RecordDecl *record_decl = record_type->getDecl();
1903                assert(record_decl);
1904                const ASTRecordLayout &record_layout = ast_context->getASTRecordLayout(record_decl);
1905                uint32_t child_idx = 0;
1906
1907                const CXXRecordDecl *cxx_record_decl = dyn_cast<CXXRecordDecl>(record_decl);
1908                if (cxx_record_decl)
1909                {
1910                    // We might have base classes to print out first
1911                    CXXRecordDecl::base_class_const_iterator base_class, base_class_end;
1912                    for (base_class = cxx_record_decl->bases_begin(), base_class_end = cxx_record_decl->bases_end();
1913                         base_class != base_class_end;
1914                         ++base_class)
1915                    {
1916                        const CXXRecordDecl *base_class_decl = NULL;
1917
1918                        // Skip empty base classes
1919                        if (omit_empty_base_classes)
1920                        {
1921                            base_class_decl = cast<CXXRecordDecl>(base_class->getType()->getAs<RecordType>()->getDecl());
1922                            if (RecordHasFields(base_class_decl) == false)
1923                                continue;
1924                        }
1925
1926                        if (idx == child_idx)
1927                        {
1928                            if (base_class_decl == NULL)
1929                                base_class_decl = cast<CXXRecordDecl>(base_class->getType()->getAs<RecordType>()->getDecl());
1930
1931
1932                            if (base_class->isVirtual())
1933                                bit_offset = record_layout.getVBaseClassOffset(base_class_decl);
1934                            else
1935                                bit_offset = record_layout.getBaseClassOffset(base_class_decl);
1936
1937                            // Base classes should be a multiple of 8 bits in size
1938                            assert (bit_offset % 8 == 0);
1939                            child_byte_offset = bit_offset/8;
1940                            std::string base_class_type_name(base_class->getType().getAsString());
1941
1942                            child_name.assign(base_class_type_name.c_str());
1943
1944                            uint64_t clang_type_info_bit_size = ast_context->getTypeSize(base_class->getType());
1945
1946                            // Base classes biut sizes should be a multiple of 8 bits in size
1947                            assert (clang_type_info_bit_size % 8 == 0);
1948                            child_byte_size = clang_type_info_bit_size / 8;
1949                            return base_class->getType().getAsOpaquePtr();
1950                        }
1951                        // We don't increment the child index in the for loop since we might
1952                        // be skipping empty base classes
1953                        ++child_idx;
1954                    }
1955                }
1956                // Make sure index is in range...
1957                uint32_t field_idx = 0;
1958                RecordDecl::field_iterator field, field_end;
1959                for (field = record_decl->field_begin(), field_end = record_decl->field_end(); field != field_end; ++field, ++field_idx, ++child_idx)
1960                {
1961                    if (idx == child_idx)
1962                    {
1963                        // Print the member type if requested
1964                        // Print the member name and equal sign
1965                        child_name.assign(field->getNameAsString().c_str());
1966
1967                        // Figure out the type byte size (field_type_info.first) and
1968                        // alignment (field_type_info.second) from the AST context.
1969                        std::pair<uint64_t, unsigned> field_type_info = ast_context->getTypeInfo(field->getType());
1970                        assert(field_idx < record_layout.getFieldCount());
1971
1972                        child_byte_size = field_type_info.first / 8;
1973
1974                        // Figure out the field offset within the current struct/union/class type
1975                        bit_offset = record_layout.getFieldOffset (field_idx);
1976                        child_byte_offset = bit_offset / 8;
1977                        if (ClangASTContext::FieldIsBitfield (ast_context, *field, child_bitfield_bit_size))
1978                            child_bitfield_bit_offset = bit_offset % 8;
1979
1980                        return field->getType().getAsOpaquePtr();
1981                    }
1982                }
1983            }
1984            break;
1985
1986        case clang::Type::ObjCObject:
1987        case clang::Type::ObjCInterface:
1988            {
1989                ObjCObjectType *objc_class_type = dyn_cast<ObjCObjectType>(parent_qual_type.getTypePtr());
1990                assert (objc_class_type);
1991                if (objc_class_type)
1992                {
1993                    uint32_t child_idx = 0;
1994                    ObjCInterfaceDecl *class_interface_decl = objc_class_type->getInterface();
1995
1996                    if (class_interface_decl)
1997                    {
1998
1999                        const ASTRecordLayout &interface_layout = ast_context->getASTObjCInterfaceLayout(class_interface_decl);
2000                        ObjCInterfaceDecl *superclass_interface_decl = class_interface_decl->getSuperClass();
2001                        if (superclass_interface_decl)
2002                        {
2003                            if (omit_empty_base_classes)
2004                            {
2005                                if (ClangASTContext::GetNumChildren(ast_context->getObjCInterfaceType(superclass_interface_decl).getAsOpaquePtr(), omit_empty_base_classes) > 0)
2006                                {
2007                                    if (idx == 0)
2008                                    {
2009                                        QualType ivar_qual_type(ast_context->getObjCInterfaceType(superclass_interface_decl));
2010
2011
2012                                        child_name.assign(superclass_interface_decl->getNameAsString().c_str());
2013
2014                                        std::pair<uint64_t, unsigned> ivar_type_info = ast_context->getTypeInfo(ivar_qual_type.getTypePtr());
2015
2016                                        child_byte_size = ivar_type_info.first / 8;
2017                                        child_byte_offset = 0;
2018
2019                                        return ivar_qual_type.getAsOpaquePtr();
2020                                    }
2021
2022                                    ++child_idx;
2023                                }
2024                            }
2025                            else
2026                                ++child_idx;
2027                        }
2028
2029                        const uint32_t superclass_idx = child_idx;
2030
2031                        if (idx < (child_idx + class_interface_decl->ivar_size()))
2032                        {
2033                            ObjCInterfaceDecl::ivar_iterator ivar_pos, ivar_end = class_interface_decl->ivar_end();
2034
2035                            for (ivar_pos = class_interface_decl->ivar_begin(); ivar_pos != ivar_end; ++ivar_pos)
2036                            {
2037                                if (child_idx == idx)
2038                                {
2039                                    const ObjCIvarDecl* ivar_decl = *ivar_pos;
2040
2041                                    QualType ivar_qual_type(ivar_decl->getType());
2042
2043                                    child_name.assign(ivar_decl->getNameAsString().c_str());
2044
2045                                    std::pair<uint64_t, unsigned> ivar_type_info = ast_context->getTypeInfo(ivar_qual_type.getTypePtr());
2046
2047                                    child_byte_size = ivar_type_info.first / 8;
2048
2049                                    // Figure out the field offset within the current struct/union/class type
2050                                    bit_offset = interface_layout.getFieldOffset (child_idx - superclass_idx);
2051                                    child_byte_offset = bit_offset / 8;
2052
2053                                    return ivar_qual_type.getAsOpaquePtr();
2054                                }
2055                                ++child_idx;
2056                            }
2057                        }
2058                    }
2059                }
2060            }
2061            break;
2062
2063        case clang::Type::ObjCObjectPointer:
2064            {
2065                ObjCObjectPointerType *pointer_type = cast<ObjCObjectPointerType>(parent_qual_type.getTypePtr());
2066                QualType pointee_type = pointer_type->getPointeeType();
2067
2068                if (transparent_pointers && ClangASTContext::IsAggregateType (pointee_type.getAsOpaquePtr()))
2069                {
2070                    return GetChildClangTypeAtIndex (ast_context,
2071                                                     parent_name,
2072                                                     pointer_type->getPointeeType().getAsOpaquePtr(),
2073                                                     idx,
2074                                                     transparent_pointers,
2075                                                     omit_empty_base_classes,
2076                                                     child_name,
2077                                                     child_byte_size,
2078                                                     child_byte_offset,
2079                                                     child_bitfield_bit_size,
2080                                                     child_bitfield_bit_offset);
2081                }
2082                else
2083                {
2084                    if (parent_name)
2085                    {
2086                        child_name.assign(1, '*');
2087                        child_name += parent_name;
2088                    }
2089
2090                    // We have a pointer to an simple type
2091                    if (idx == 0)
2092                    {
2093                        std::pair<uint64_t, unsigned> clang_type_info = ast_context->getTypeInfo(pointee_type);
2094                        assert(clang_type_info.first % 8 == 0);
2095                        child_byte_size = clang_type_info.first / 8;
2096                        child_byte_offset = 0;
2097                        return pointee_type.getAsOpaquePtr();
2098                    }
2099                }
2100            }
2101            break;
2102
2103        case clang::Type::ConstantArray:
2104            {
2105                const ConstantArrayType *array = cast<ConstantArrayType>(parent_qual_type.getTypePtr());
2106                const uint64_t element_count = array->getSize().getLimitedValue();
2107
2108                if (idx < element_count)
2109                {
2110                    std::pair<uint64_t, unsigned> field_type_info = ast_context->getTypeInfo(array->getElementType());
2111
2112                    char element_name[32];
2113                    ::snprintf (element_name, sizeof (element_name), "%s[%u]", parent_name ? parent_name : "", idx);
2114
2115                    child_name.assign(element_name);
2116                    assert(field_type_info.first % 8 == 0);
2117                    child_byte_size = field_type_info.first / 8;
2118                    child_byte_offset = idx * child_byte_size;
2119                    return array->getElementType().getAsOpaquePtr();
2120                }
2121            }
2122            break;
2123
2124        case clang::Type::Pointer:
2125            {
2126                PointerType *pointer_type = cast<PointerType>(parent_qual_type.getTypePtr());
2127                QualType pointee_type = pointer_type->getPointeeType();
2128
2129                if (transparent_pointers && ClangASTContext::IsAggregateType (pointee_type.getAsOpaquePtr()))
2130                {
2131                    return GetChildClangTypeAtIndex (ast_context,
2132                                                     parent_name,
2133                                                     pointer_type->getPointeeType().getAsOpaquePtr(),
2134                                                     idx,
2135                                                     transparent_pointers,
2136                                                     omit_empty_base_classes,
2137                                                     child_name,
2138                                                     child_byte_size,
2139                                                     child_byte_offset,
2140                                                     child_bitfield_bit_size,
2141                                                     child_bitfield_bit_offset);
2142                }
2143                else
2144                {
2145                    if (parent_name)
2146                    {
2147                        child_name.assign(1, '*');
2148                        child_name += parent_name;
2149                    }
2150
2151                    // We have a pointer to an simple type
2152                    if (idx == 0)
2153                    {
2154                        std::pair<uint64_t, unsigned> clang_type_info = ast_context->getTypeInfo(pointee_type);
2155                        assert(clang_type_info.first % 8 == 0);
2156                        child_byte_size = clang_type_info.first / 8;
2157                        child_byte_offset = 0;
2158                        return pointee_type.getAsOpaquePtr();
2159                    }
2160                }
2161            }
2162            break;
2163
2164        case clang::Type::Typedef:
2165            return GetChildClangTypeAtIndex (ast_context,
2166                                             parent_name,
2167                                             cast<TypedefType>(parent_qual_type)->LookThroughTypedefs().getAsOpaquePtr(),
2168                                             idx,
2169                                             transparent_pointers,
2170                                             omit_empty_base_classes,
2171                                             child_name,
2172                                             child_byte_size,
2173                                             child_byte_offset,
2174                                             child_bitfield_bit_size,
2175                                             child_bitfield_bit_offset);
2176            break;
2177
2178        default:
2179            break;
2180        }
2181    }
2182    return NULL;
2183}
2184
2185static inline bool
2186BaseSpecifierIsEmpty (const CXXBaseSpecifier *b)
2187{
2188    return ClangASTContext::RecordHasFields(cast<CXXRecordDecl>(b->getType()->getAs<RecordType>()->getDecl())) == false;
2189}
2190
2191static uint32_t
2192GetNumBaseClasses (const CXXRecordDecl *cxx_record_decl, bool omit_empty_base_classes)
2193{
2194    uint32_t num_bases = 0;
2195    if (cxx_record_decl)
2196    {
2197        if (omit_empty_base_classes)
2198        {
2199            CXXRecordDecl::base_class_const_iterator base_class, base_class_end;
2200            for (base_class = cxx_record_decl->bases_begin(), base_class_end = cxx_record_decl->bases_end();
2201                 base_class != base_class_end;
2202                 ++base_class)
2203            {
2204                // Skip empty base classes
2205                if (omit_empty_base_classes)
2206                {
2207                    if (BaseSpecifierIsEmpty (base_class))
2208                        continue;
2209                }
2210                ++num_bases;
2211            }
2212        }
2213        else
2214            num_bases = cxx_record_decl->getNumBases();
2215    }
2216    return num_bases;
2217}
2218
2219
2220static uint32_t
2221GetIndexForRecordBase
2222(
2223    const RecordDecl *record_decl,
2224    const CXXBaseSpecifier *base_spec,
2225    bool omit_empty_base_classes
2226)
2227{
2228    uint32_t child_idx = 0;
2229
2230    const CXXRecordDecl *cxx_record_decl = dyn_cast<CXXRecordDecl>(record_decl);
2231
2232//    const char *super_name = record_decl->getNameAsCString();
2233//    const char *base_name = base_spec->getType()->getAs<RecordType>()->getDecl()->getNameAsCString();
2234//    printf ("GetIndexForRecordChild (%s, %s)\n", super_name, base_name);
2235//
2236    if (cxx_record_decl)
2237    {
2238        CXXRecordDecl::base_class_const_iterator base_class, base_class_end;
2239        for (base_class = cxx_record_decl->bases_begin(), base_class_end = cxx_record_decl->bases_end();
2240             base_class != base_class_end;
2241             ++base_class)
2242        {
2243            if (omit_empty_base_classes)
2244            {
2245                if (BaseSpecifierIsEmpty (base_class))
2246                    continue;
2247            }
2248
2249//            printf ("GetIndexForRecordChild (%s, %s) base[%u] = %s\n", super_name, base_name,
2250//                    child_idx,
2251//                    base_class->getType()->getAs<RecordType>()->getDecl()->getNameAsCString());
2252//
2253//
2254            if (base_class == base_spec)
2255                return child_idx;
2256            ++child_idx;
2257        }
2258    }
2259
2260    return UINT32_MAX;
2261}
2262
2263
2264static uint32_t
2265GetIndexForRecordChild
2266(
2267    const RecordDecl *record_decl,
2268    NamedDecl *canonical_decl,
2269    bool omit_empty_base_classes
2270)
2271{
2272    uint32_t child_idx = GetNumBaseClasses (dyn_cast<CXXRecordDecl>(record_decl), omit_empty_base_classes);
2273
2274//    const CXXRecordDecl *cxx_record_decl = dyn_cast<CXXRecordDecl>(record_decl);
2275//
2276////    printf ("GetIndexForRecordChild (%s, %s)\n", record_decl->getNameAsCString(), canonical_decl->getNameAsCString());
2277//    if (cxx_record_decl)
2278//    {
2279//        CXXRecordDecl::base_class_const_iterator base_class, base_class_end;
2280//        for (base_class = cxx_record_decl->bases_begin(), base_class_end = cxx_record_decl->bases_end();
2281//             base_class != base_class_end;
2282//             ++base_class)
2283//        {
2284//            if (omit_empty_base_classes)
2285//            {
2286//                if (BaseSpecifierIsEmpty (base_class))
2287//                    continue;
2288//            }
2289//
2290////            printf ("GetIndexForRecordChild (%s, %s) base[%u] = %s\n",
2291////                    record_decl->getNameAsCString(),
2292////                    canonical_decl->getNameAsCString(),
2293////                    child_idx,
2294////                    base_class->getType()->getAs<RecordType>()->getDecl()->getNameAsCString());
2295//
2296//
2297//            CXXRecordDecl *curr_base_class_decl = cast<CXXRecordDecl>(base_class->getType()->getAs<RecordType>()->getDecl());
2298//            if (curr_base_class_decl == canonical_decl)
2299//            {
2300//                return child_idx;
2301//            }
2302//            ++child_idx;
2303//        }
2304//    }
2305//
2306//    const uint32_t num_bases = child_idx;
2307    RecordDecl::field_iterator field, field_end;
2308    for (field = record_decl->field_begin(), field_end = record_decl->field_end();
2309         field != field_end;
2310         ++field, ++child_idx)
2311    {
2312//            printf ("GetIndexForRecordChild (%s, %s) field[%u] = %s\n",
2313//                    record_decl->getNameAsCString(),
2314//                    canonical_decl->getNameAsCString(),
2315//                    child_idx - num_bases,
2316//                    field->getNameAsCString());
2317
2318        if (field->getCanonicalDecl() == canonical_decl)
2319            return child_idx;
2320    }
2321
2322    return UINT32_MAX;
2323}
2324
2325// Look for a child member (doesn't include base classes, but it does include
2326// their members) in the type hierarchy. Returns an index path into "clang_type"
2327// on how to reach the appropriate member.
2328//
2329//    class A
2330//    {
2331//    public:
2332//        int m_a;
2333//        int m_b;
2334//    };
2335//
2336//    class B
2337//    {
2338//    };
2339//
2340//    class C :
2341//        public B,
2342//        public A
2343//    {
2344//    };
2345//
2346// If we have a clang type that describes "class C", and we wanted to looked
2347// "m_b" in it:
2348//
2349// With omit_empty_base_classes == false we would get an integer array back with:
2350// { 1,  1 }
2351// The first index 1 is the child index for "class A" within class C
2352// The second index 1 is the child index for "m_b" within class A
2353//
2354// With omit_empty_base_classes == true we would get an integer array back with:
2355// { 0,  1 }
2356// The first index 0 is the child index for "class A" within class C (since class B doesn't have any members it doesn't count)
2357// The second index 1 is the child index for "m_b" within class A
2358
2359size_t
2360ClangASTContext::GetIndexOfChildMemberWithName
2361(
2362    ASTContext *ast_context,
2363    clang_type_t clang_type,
2364    const char *name,
2365    bool omit_empty_base_classes,
2366    std::vector<uint32_t>& child_indexes
2367)
2368{
2369    if (clang_type && name && name[0])
2370    {
2371        QualType qual_type(QualType::getFromOpaquePtr(clang_type));
2372        const clang::Type::TypeClass type_class = qual_type->getTypeClass();
2373        switch (type_class)
2374        {
2375        case clang::Type::Record:
2376            {
2377                const RecordType *record_type = cast<RecordType>(qual_type.getTypePtr());
2378                const RecordDecl *record_decl = record_type->getDecl();
2379
2380                assert(record_decl);
2381                uint32_t child_idx = 0;
2382
2383                const CXXRecordDecl *cxx_record_decl = dyn_cast<CXXRecordDecl>(record_decl);
2384
2385                // Try and find a field that matches NAME
2386                RecordDecl::field_iterator field, field_end;
2387                StringRef name_sref(name);
2388                for (field = record_decl->field_begin(), field_end = record_decl->field_end();
2389                     field != field_end;
2390                     ++field, ++child_idx)
2391                {
2392                    if (field->getName().equals (name_sref))
2393                    {
2394                        // We have to add on the number of base classes to this index!
2395                        child_indexes.push_back (child_idx + GetNumBaseClasses (cxx_record_decl, omit_empty_base_classes));
2396                        return child_indexes.size();
2397                    }
2398                }
2399
2400                if (cxx_record_decl)
2401                {
2402                    const RecordDecl *parent_record_decl = cxx_record_decl;
2403
2404                    //printf ("parent = %s\n", parent_record_decl->getNameAsCString());
2405
2406                    //const Decl *root_cdecl = cxx_record_decl->getCanonicalDecl();
2407                    // Didn't find things easily, lets let clang do its thang...
2408                    IdentifierInfo & ident_ref = ast_context->Idents.get(name, name + strlen (name));
2409                    DeclarationName decl_name(&ident_ref);
2410
2411                    CXXBasePaths paths;
2412                    if (cxx_record_decl->lookupInBases(CXXRecordDecl::FindOrdinaryMember,
2413                                                       decl_name.getAsOpaquePtr(),
2414                                                       paths))
2415                    {
2416                        CXXBasePaths::const_paths_iterator path, path_end = paths.end();
2417                        for (path = paths.begin(); path != path_end; ++path)
2418                        {
2419                            const size_t num_path_elements = path->size();
2420                            for (size_t e=0; e<num_path_elements; ++e)
2421                            {
2422                                CXXBasePathElement elem = (*path)[e];
2423
2424                                child_idx = GetIndexForRecordBase (parent_record_decl, elem.Base, omit_empty_base_classes);
2425                                if (child_idx == UINT32_MAX)
2426                                {
2427                                    child_indexes.clear();
2428                                    return 0;
2429                                }
2430                                else
2431                                {
2432                                    child_indexes.push_back (child_idx);
2433                                    parent_record_decl = cast<RecordDecl>(elem.Base->getType()->getAs<RecordType>()->getDecl());
2434                                }
2435                            }
2436                            DeclContext::lookup_iterator named_decl_pos;
2437                            for (named_decl_pos = path->Decls.first;
2438                                 named_decl_pos != path->Decls.second && parent_record_decl;
2439                                 ++named_decl_pos)
2440                            {
2441                                //printf ("path[%zu] = %s\n", child_indexes.size(), (*named_decl_pos)->getNameAsCString());
2442
2443                                child_idx = GetIndexForRecordChild (parent_record_decl, *named_decl_pos, omit_empty_base_classes);
2444                                if (child_idx == UINT32_MAX)
2445                                {
2446                                    child_indexes.clear();
2447                                    return 0;
2448                                }
2449                                else
2450                                {
2451                                    child_indexes.push_back (child_idx);
2452                                }
2453                            }
2454                        }
2455                        return child_indexes.size();
2456                    }
2457                }
2458
2459            }
2460            break;
2461
2462        case clang::Type::ObjCObject:
2463        case clang::Type::ObjCInterface:
2464            {
2465                StringRef name_sref(name);
2466                ObjCObjectType *objc_class_type = dyn_cast<ObjCObjectType>(qual_type.getTypePtr());
2467                assert (objc_class_type);
2468                if (objc_class_type)
2469                {
2470                    uint32_t child_idx = 0;
2471                    ObjCInterfaceDecl *class_interface_decl = objc_class_type->getInterface();
2472
2473                    if (class_interface_decl)
2474                    {
2475                        ObjCInterfaceDecl::ivar_iterator ivar_pos, ivar_end = class_interface_decl->ivar_end();
2476                        ObjCInterfaceDecl *superclass_interface_decl = class_interface_decl->getSuperClass();
2477
2478                        for (ivar_pos = class_interface_decl->ivar_begin(); ivar_pos != ivar_end; ++ivar_pos, ++child_idx)
2479                        {
2480                            const ObjCIvarDecl* ivar_decl = *ivar_pos;
2481
2482                            if (ivar_decl->getName().equals (name_sref))
2483                            {
2484                                if ((!omit_empty_base_classes && superclass_interface_decl) ||
2485                                    ( omit_empty_base_classes && ObjCDeclHasIVars (superclass_interface_decl, true)))
2486                                    ++child_idx;
2487
2488                                child_indexes.push_back (child_idx);
2489                                return child_indexes.size();
2490                            }
2491                        }
2492
2493                        if (superclass_interface_decl)
2494                        {
2495                            // The super class index is always zero for ObjC classes,
2496                            // so we push it onto the child indexes in case we find
2497                            // an ivar in our superclass...
2498                            child_indexes.push_back (0);
2499
2500                            if (GetIndexOfChildMemberWithName (ast_context,
2501                                                               ast_context->getObjCInterfaceType(superclass_interface_decl).getAsOpaquePtr(),
2502                                                               name,
2503                                                               omit_empty_base_classes,
2504                                                               child_indexes))
2505                            {
2506                                // We did find an ivar in a superclass so just
2507                                // return the results!
2508                                return child_indexes.size();
2509                            }
2510
2511                            // We didn't find an ivar matching "name" in our
2512                            // superclass, pop the superclass zero index that
2513                            // we pushed on above.
2514                            child_indexes.pop_back();
2515                        }
2516                    }
2517                }
2518            }
2519            break;
2520
2521        case clang::Type::ObjCObjectPointer:
2522            {
2523                return GetIndexOfChildMemberWithName (ast_context,
2524                                                      cast<ObjCObjectPointerType>(qual_type.getTypePtr())->getPointeeType().getAsOpaquePtr(),
2525                                                      name,
2526                                                      omit_empty_base_classes,
2527                                                      child_indexes);
2528            }
2529            break;
2530
2531
2532        case clang::Type::ConstantArray:
2533            {
2534//                const ConstantArrayType *array = cast<ConstantArrayType>(parent_qual_type.getTypePtr());
2535//                const uint64_t element_count = array->getSize().getLimitedValue();
2536//
2537//                if (idx < element_count)
2538//                {
2539//                    std::pair<uint64_t, unsigned> field_type_info = ast_context->getTypeInfo(array->getElementType());
2540//
2541//                    char element_name[32];
2542//                    ::snprintf (element_name, sizeof (element_name), "%s[%u]", parent_name ? parent_name : "", idx);
2543//
2544//                    child_name.assign(element_name);
2545//                    assert(field_type_info.first % 8 == 0);
2546//                    child_byte_size = field_type_info.first / 8;
2547//                    child_byte_offset = idx * child_byte_size;
2548//                    return array->getElementType().getAsOpaquePtr();
2549//                }
2550            }
2551            break;
2552
2553//        case clang::Type::MemberPointerType:
2554//            {
2555//                MemberPointerType *mem_ptr_type = cast<MemberPointerType>(qual_type.getTypePtr());
2556//                QualType pointee_type = mem_ptr_type->getPointeeType();
2557//
2558//                if (ClangASTContext::IsAggregateType (pointee_type.getAsOpaquePtr()))
2559//                {
2560//                    return GetIndexOfChildWithName (ast_context,
2561//                                                    mem_ptr_type->getPointeeType().getAsOpaquePtr(),
2562//                                                    name);
2563//                }
2564//            }
2565//            break;
2566//
2567        case clang::Type::LValueReference:
2568        case clang::Type::RValueReference:
2569            {
2570                ReferenceType *reference_type = cast<ReferenceType>(qual_type.getTypePtr());
2571                QualType pointee_type = reference_type->getPointeeType();
2572
2573                if (ClangASTContext::IsAggregateType (pointee_type.getAsOpaquePtr()))
2574                {
2575                    return GetIndexOfChildMemberWithName (ast_context,
2576                                                          reference_type->getPointeeType().getAsOpaquePtr(),
2577                                                          name,
2578                                                          omit_empty_base_classes,
2579                                                          child_indexes);
2580                }
2581            }
2582            break;
2583
2584        case clang::Type::Pointer:
2585            {
2586                PointerType *pointer_type = cast<PointerType>(qual_type.getTypePtr());
2587                QualType pointee_type = pointer_type->getPointeeType();
2588
2589                if (ClangASTContext::IsAggregateType (pointee_type.getAsOpaquePtr()))
2590                {
2591                    return GetIndexOfChildMemberWithName (ast_context,
2592                                                          pointer_type->getPointeeType().getAsOpaquePtr(),
2593                                                          name,
2594                                                          omit_empty_base_classes,
2595                                                          child_indexes);
2596                }
2597                else
2598                {
2599//                    if (parent_name)
2600//                    {
2601//                        child_name.assign(1, '*');
2602//                        child_name += parent_name;
2603//                    }
2604//
2605//                    // We have a pointer to an simple type
2606//                    if (idx == 0)
2607//                    {
2608//                        std::pair<uint64_t, unsigned> clang_type_info = ast_context->getTypeInfo(pointee_type);
2609//                        assert(clang_type_info.first % 8 == 0);
2610//                        child_byte_size = clang_type_info.first / 8;
2611//                        child_byte_offset = 0;
2612//                        return pointee_type.getAsOpaquePtr();
2613//                    }
2614                }
2615            }
2616            break;
2617
2618        case clang::Type::Typedef:
2619            return GetIndexOfChildMemberWithName (ast_context,
2620                                                  cast<TypedefType>(qual_type)->LookThroughTypedefs().getAsOpaquePtr(),
2621                                                  name,
2622                                                  omit_empty_base_classes,
2623                                                  child_indexes);
2624
2625        default:
2626            break;
2627        }
2628    }
2629    return 0;
2630}
2631
2632
2633// Get the index of the child of "clang_type" whose name matches. This function
2634// doesn't descend into the children, but only looks one level deep and name
2635// matches can include base class names.
2636
2637uint32_t
2638ClangASTContext::GetIndexOfChildWithName
2639(
2640    ASTContext *ast_context,
2641    clang_type_t clang_type,
2642    const char *name,
2643    bool omit_empty_base_classes
2644)
2645{
2646    if (clang_type && name && name[0])
2647    {
2648        QualType qual_type(QualType::getFromOpaquePtr(clang_type));
2649
2650        const clang::Type::TypeClass type_class = qual_type->getTypeClass();
2651
2652        switch (type_class)
2653        {
2654        case clang::Type::Record:
2655            {
2656                const RecordType *record_type = cast<RecordType>(qual_type.getTypePtr());
2657                const RecordDecl *record_decl = record_type->getDecl();
2658
2659                assert(record_decl);
2660                uint32_t child_idx = 0;
2661
2662                const CXXRecordDecl *cxx_record_decl = dyn_cast<CXXRecordDecl>(record_decl);
2663
2664                if (cxx_record_decl)
2665                {
2666                    CXXRecordDecl::base_class_const_iterator base_class, base_class_end;
2667                    for (base_class = cxx_record_decl->bases_begin(), base_class_end = cxx_record_decl->bases_end();
2668                         base_class != base_class_end;
2669                         ++base_class)
2670                    {
2671                        // Skip empty base classes
2672                        CXXRecordDecl *base_class_decl = cast<CXXRecordDecl>(base_class->getType()->getAs<RecordType>()->getDecl());
2673                        if (omit_empty_base_classes && RecordHasFields(base_class_decl) == false)
2674                            continue;
2675
2676                        if (base_class->getType().getAsString().compare (name) == 0)
2677                            return child_idx;
2678                        ++child_idx;
2679                    }
2680                }
2681
2682                // Try and find a field that matches NAME
2683                RecordDecl::field_iterator field, field_end;
2684                StringRef name_sref(name);
2685                for (field = record_decl->field_begin(), field_end = record_decl->field_end();
2686                     field != field_end;
2687                     ++field, ++child_idx)
2688                {
2689                    if (field->getName().equals (name_sref))
2690                        return child_idx;
2691                }
2692
2693            }
2694            break;
2695
2696        case clang::Type::ObjCObject:
2697        case clang::Type::ObjCInterface:
2698            {
2699                StringRef name_sref(name);
2700                ObjCObjectType *objc_class_type = dyn_cast<ObjCObjectType>(qual_type.getTypePtr());
2701                assert (objc_class_type);
2702                if (objc_class_type)
2703                {
2704                    uint32_t child_idx = 0;
2705                    ObjCInterfaceDecl *class_interface_decl = objc_class_type->getInterface();
2706
2707                    if (class_interface_decl)
2708                    {
2709                        ObjCInterfaceDecl::ivar_iterator ivar_pos, ivar_end = class_interface_decl->ivar_end();
2710                        ObjCInterfaceDecl *superclass_interface_decl = class_interface_decl->getSuperClass();
2711
2712                        for (ivar_pos = class_interface_decl->ivar_begin(); ivar_pos != ivar_end; ++ivar_pos)
2713                        {
2714                            const ObjCIvarDecl* ivar_decl = *ivar_pos;
2715
2716                            if (ivar_decl->getName().equals (name_sref))
2717                            {
2718                                if ((!omit_empty_base_classes && superclass_interface_decl) ||
2719                                    ( omit_empty_base_classes && ObjCDeclHasIVars (superclass_interface_decl, true)))
2720                                    ++child_idx;
2721
2722                                return child_idx;
2723                            }
2724                        }
2725
2726                        if (superclass_interface_decl)
2727                        {
2728                            if (superclass_interface_decl->getName().equals (name_sref))
2729                                return 0;
2730                        }
2731                    }
2732                }
2733            }
2734            break;
2735
2736        case clang::Type::ObjCObjectPointer:
2737            {
2738                return GetIndexOfChildWithName (ast_context,
2739                                                cast<ObjCObjectPointerType>(qual_type.getTypePtr())->getPointeeType().getAsOpaquePtr(),
2740                                                name,
2741                                                omit_empty_base_classes);
2742            }
2743            break;
2744
2745        case clang::Type::ConstantArray:
2746            {
2747//                const ConstantArrayType *array = cast<ConstantArrayType>(parent_qual_type.getTypePtr());
2748//                const uint64_t element_count = array->getSize().getLimitedValue();
2749//
2750//                if (idx < element_count)
2751//                {
2752//                    std::pair<uint64_t, unsigned> field_type_info = ast_context->getTypeInfo(array->getElementType());
2753//
2754//                    char element_name[32];
2755//                    ::snprintf (element_name, sizeof (element_name), "%s[%u]", parent_name ? parent_name : "", idx);
2756//
2757//                    child_name.assign(element_name);
2758//                    assert(field_type_info.first % 8 == 0);
2759//                    child_byte_size = field_type_info.first / 8;
2760//                    child_byte_offset = idx * child_byte_size;
2761//                    return array->getElementType().getAsOpaquePtr();
2762//                }
2763            }
2764            break;
2765
2766//        case clang::Type::MemberPointerType:
2767//            {
2768//                MemberPointerType *mem_ptr_type = cast<MemberPointerType>(qual_type.getTypePtr());
2769//                QualType pointee_type = mem_ptr_type->getPointeeType();
2770//
2771//                if (ClangASTContext::IsAggregateType (pointee_type.getAsOpaquePtr()))
2772//                {
2773//                    return GetIndexOfChildWithName (ast_context,
2774//                                                    mem_ptr_type->getPointeeType().getAsOpaquePtr(),
2775//                                                    name);
2776//                }
2777//            }
2778//            break;
2779//
2780        case clang::Type::LValueReference:
2781        case clang::Type::RValueReference:
2782            {
2783                ReferenceType *reference_type = cast<ReferenceType>(qual_type.getTypePtr());
2784                QualType pointee_type = reference_type->getPointeeType();
2785
2786                if (ClangASTContext::IsAggregateType (pointee_type.getAsOpaquePtr()))
2787                {
2788                    return GetIndexOfChildWithName (ast_context,
2789                                                    reference_type->getPointeeType().getAsOpaquePtr(),
2790                                                    name,
2791                                                    omit_empty_base_classes);
2792                }
2793            }
2794            break;
2795
2796        case clang::Type::Pointer:
2797            {
2798                PointerType *pointer_type = cast<PointerType>(qual_type.getTypePtr());
2799                QualType pointee_type = pointer_type->getPointeeType();
2800
2801                if (ClangASTContext::IsAggregateType (pointee_type.getAsOpaquePtr()))
2802                {
2803                    return GetIndexOfChildWithName (ast_context,
2804                                                    pointer_type->getPointeeType().getAsOpaquePtr(),
2805                                                    name,
2806                                                    omit_empty_base_classes);
2807                }
2808                else
2809                {
2810//                    if (parent_name)
2811//                    {
2812//                        child_name.assign(1, '*');
2813//                        child_name += parent_name;
2814//                    }
2815//
2816//                    // We have a pointer to an simple type
2817//                    if (idx == 0)
2818//                    {
2819//                        std::pair<uint64_t, unsigned> clang_type_info = ast_context->getTypeInfo(pointee_type);
2820//                        assert(clang_type_info.first % 8 == 0);
2821//                        child_byte_size = clang_type_info.first / 8;
2822//                        child_byte_offset = 0;
2823//                        return pointee_type.getAsOpaquePtr();
2824//                    }
2825                }
2826            }
2827            break;
2828
2829        case clang::Type::Typedef:
2830            return GetIndexOfChildWithName (ast_context,
2831                                            cast<TypedefType>(qual_type)->LookThroughTypedefs().getAsOpaquePtr(),
2832                                            name,
2833                                            omit_empty_base_classes);
2834
2835        default:
2836            break;
2837        }
2838    }
2839    return UINT32_MAX;
2840}
2841
2842#pragma mark TagType
2843
2844bool
2845ClangASTContext::SetTagTypeKind (clang_type_t tag_clang_type, int kind)
2846{
2847    if (tag_clang_type)
2848    {
2849        QualType tag_qual_type(QualType::getFromOpaquePtr(tag_clang_type));
2850        clang::Type *clang_type = tag_qual_type.getTypePtr();
2851        if (clang_type)
2852        {
2853            TagType *tag_type = dyn_cast<TagType>(clang_type);
2854            if (tag_type)
2855            {
2856                TagDecl *tag_decl = dyn_cast<TagDecl>(tag_type->getDecl());
2857                if (tag_decl)
2858                {
2859                    tag_decl->setTagKind ((TagDecl::TagKind)kind);
2860                    return true;
2861                }
2862            }
2863        }
2864    }
2865    return false;
2866}
2867
2868
2869#pragma mark DeclContext Functions
2870
2871DeclContext *
2872ClangASTContext::GetDeclContextForType (clang_type_t clang_type)
2873{
2874    if (clang_type == NULL)
2875        return NULL;
2876
2877    QualType qual_type(QualType::getFromOpaquePtr(clang_type));
2878    const clang::Type::TypeClass type_class = qual_type->getTypeClass();
2879    switch (type_class)
2880    {
2881    case clang::Type::FunctionNoProto:          break;
2882    case clang::Type::FunctionProto:            break;
2883    case clang::Type::IncompleteArray:          break;
2884    case clang::Type::VariableArray:            break;
2885    case clang::Type::ConstantArray:            break;
2886    case clang::Type::ExtVector:                break;
2887    case clang::Type::Vector:                   break;
2888    case clang::Type::Builtin:                  break;
2889    case clang::Type::BlockPointer:             break;
2890    case clang::Type::Pointer:                  break;
2891    case clang::Type::LValueReference:          break;
2892    case clang::Type::RValueReference:          break;
2893    case clang::Type::MemberPointer:            break;
2894    case clang::Type::Complex:                  break;
2895    case clang::Type::ObjCObject:               break;
2896    case clang::Type::ObjCInterface:            return cast<ObjCObjectType>(qual_type.getTypePtr())->getInterface();
2897    case clang::Type::ObjCObjectPointer:        return ClangASTContext::GetDeclContextForType (cast<ObjCObjectPointerType>(qual_type.getTypePtr())->getPointeeType().getAsOpaquePtr());
2898    case clang::Type::Record:                   return cast<RecordType>(qual_type)->getDecl();
2899    case clang::Type::Enum:                     return cast<EnumType>(qual_type)->getDecl();
2900    case clang::Type::Typedef:                  return ClangASTContext::GetDeclContextForType (cast<TypedefType>(qual_type)->LookThroughTypedefs().getAsOpaquePtr());
2901
2902    case clang::Type::TypeOfExpr:               break;
2903    case clang::Type::TypeOf:                   break;
2904    case clang::Type::Decltype:                 break;
2905    //case clang::Type::QualifiedName:          break;
2906    case clang::Type::TemplateSpecialization:   break;
2907    }
2908    // No DeclContext in this type...
2909    return NULL;
2910}
2911
2912#pragma mark Namespace Declarations
2913
2914NamespaceDecl *
2915ClangASTContext::GetUniqueNamespaceDeclaration (const char *name, const Declaration &decl, DeclContext *decl_ctx)
2916{
2917    // TODO: Do something intelligent with the Declaration object passed in
2918    // like maybe filling in the SourceLocation with it...
2919    if (name)
2920    {
2921        ASTContext *ast_context = getASTContext();
2922        if (decl_ctx == NULL)
2923            decl_ctx = ast_context->getTranslationUnitDecl();
2924        return NamespaceDecl::Create(*ast_context, decl_ctx, SourceLocation(), &ast_context->Idents.get(name));
2925    }
2926    return NULL;
2927}
2928
2929
2930#pragma mark Function Types
2931
2932FunctionDecl *
2933ClangASTContext::CreateFunctionDeclaration (const char *name, clang_type_t function_clang_type, int storage, bool is_inline)
2934{
2935    if (name)
2936    {
2937        ASTContext *ast_context = getASTContext();
2938        assert (ast_context != NULL);
2939
2940        if (name && name[0])
2941        {
2942            return FunctionDecl::Create(*ast_context,
2943                                        ast_context->getTranslationUnitDecl(),
2944                                        SourceLocation(),
2945                                        DeclarationName (&ast_context->Idents.get(name)),
2946                                        QualType::getFromOpaquePtr(function_clang_type),
2947                                        NULL,
2948                                        (FunctionDecl::StorageClass)storage,
2949                                        (FunctionDecl::StorageClass)storage,
2950                                        is_inline);
2951        }
2952        else
2953        {
2954            return FunctionDecl::Create(*ast_context,
2955                                        ast_context->getTranslationUnitDecl(),
2956                                        SourceLocation(),
2957                                        DeclarationName (),
2958                                        QualType::getFromOpaquePtr(function_clang_type),
2959                                        NULL,
2960                                        (FunctionDecl::StorageClass)storage,
2961                                        (FunctionDecl::StorageClass)storage,
2962                                        is_inline);
2963        }
2964    }
2965    return NULL;
2966}
2967
2968clang_type_t
2969ClangASTContext::CreateFunctionType (ASTContext *ast_context,
2970                                     clang_type_t result_type,
2971                                     clang_type_t *args,
2972                                     unsigned num_args,
2973                                     bool is_variadic,
2974                                     unsigned type_quals)
2975{
2976    assert (ast_context != NULL);
2977    std::vector<QualType> qual_type_args;
2978    for (unsigned i=0; i<num_args; ++i)
2979        qual_type_args.push_back (QualType::getFromOpaquePtr(args[i]));
2980
2981    // TODO: Detect calling convention in DWARF?
2982    return ast_context->getFunctionType(QualType::getFromOpaquePtr(result_type),
2983                                        qual_type_args.empty() ? NULL : &qual_type_args.front(),
2984                                        qual_type_args.size(),
2985                                        is_variadic,
2986                                        type_quals,
2987                                        false,  // hasExceptionSpec
2988                                        false,  // hasAnyExceptionSpec,
2989                                        0,      // NumExs
2990                                        0,      // const QualType *ExArray
2991                                        FunctionType::ExtInfo ()).getAsOpaquePtr();    // NoReturn);
2992}
2993
2994ParmVarDecl *
2995ClangASTContext::CreateParameterDeclaration (const char *name, clang_type_t param_type, int storage)
2996{
2997    ASTContext *ast_context = getASTContext();
2998    assert (ast_context != NULL);
2999    return ParmVarDecl::Create(*ast_context,
3000                                ast_context->getTranslationUnitDecl(),
3001                                SourceLocation(),
3002                                name && name[0] ? &ast_context->Idents.get(name) : NULL,
3003                                QualType::getFromOpaquePtr(param_type),
3004                                NULL,
3005                                (VarDecl::StorageClass)storage,
3006                                (VarDecl::StorageClass)storage,
3007                                0);
3008}
3009
3010void
3011ClangASTContext::SetFunctionParameters (FunctionDecl *function_decl, ParmVarDecl **params, unsigned num_params)
3012{
3013    if (function_decl)
3014        function_decl->setParams (params, num_params);
3015}
3016
3017
3018#pragma mark Array Types
3019
3020clang_type_t
3021ClangASTContext::CreateArrayType (clang_type_t element_type, size_t element_count, uint32_t bit_stride)
3022{
3023    if (element_type)
3024    {
3025        ASTContext *ast_context = getASTContext();
3026        assert (ast_context != NULL);
3027        llvm::APInt ap_element_count (64, element_count);
3028        return ast_context->getConstantArrayType(QualType::getFromOpaquePtr(element_type),
3029                                                 ap_element_count,
3030                                                 ArrayType::Normal,
3031                                                 0).getAsOpaquePtr(); // ElemQuals
3032    }
3033    return NULL;
3034}
3035
3036
3037#pragma mark TagDecl
3038
3039bool
3040ClangASTContext::StartTagDeclarationDefinition (clang_type_t clang_type)
3041{
3042    if (clang_type)
3043    {
3044        QualType qual_type (QualType::getFromOpaquePtr(clang_type));
3045        clang::Type *t = qual_type.getTypePtr();
3046        if (t)
3047        {
3048            TagType *tag_type = dyn_cast<TagType>(t);
3049            if (tag_type)
3050            {
3051                TagDecl *tag_decl = tag_type->getDecl();
3052                if (tag_decl)
3053                {
3054                    tag_decl->startDefinition();
3055                    return true;
3056                }
3057            }
3058        }
3059    }
3060    return false;
3061}
3062
3063bool
3064ClangASTContext::CompleteTagDeclarationDefinition (clang_type_t clang_type)
3065{
3066    if (clang_type)
3067    {
3068        QualType qual_type (QualType::getFromOpaquePtr(clang_type));
3069
3070        CXXRecordDecl *cxx_record_decl = qual_type->getAsCXXRecordDecl();
3071
3072        if (cxx_record_decl)
3073        {
3074            cxx_record_decl->completeDefinition();
3075
3076            return true;
3077        }
3078
3079        const EnumType *enum_type = dyn_cast<EnumType>(qual_type.getTypePtr());
3080
3081        if (enum_type)
3082        {
3083            EnumDecl *enum_decl = enum_type->getDecl();
3084
3085            if (enum_decl)
3086            {
3087                /// TODO This really needs to be fixed.
3088
3089                unsigned NumPositiveBits = 1;
3090                unsigned NumNegativeBits = 0;
3091
3092                enum_decl->completeDefinition(enum_decl->getIntegerType(), enum_decl->getIntegerType(), NumPositiveBits, NumNegativeBits);
3093                return true;
3094            }
3095        }
3096    }
3097    return false;
3098}
3099
3100
3101#pragma mark Enumeration Types
3102
3103clang_type_t
3104ClangASTContext::CreateEnumerationType (const Declaration &decl, const char *name, clang_type_t integer_qual_type)
3105{
3106    // TODO: Do something intelligent with the Declaration object passed in
3107    // like maybe filling in the SourceLocation with it...
3108    ASTContext *ast_context = getASTContext();
3109    assert (ast_context != NULL);
3110    EnumDecl *enum_decl = EnumDecl::Create(*ast_context,
3111                                           ast_context->getTranslationUnitDecl(),
3112                                           SourceLocation(),
3113                                           name && name[0] ? &ast_context->Idents.get(name) : NULL,
3114                                           SourceLocation(),
3115                                           NULL);
3116    if (enum_decl)
3117    {
3118        // TODO: check if we should be setting the promotion type too?
3119        enum_decl->setIntegerType(QualType::getFromOpaquePtr (integer_qual_type));
3120        return ast_context->getTagDeclType(enum_decl).getAsOpaquePtr();
3121    }
3122    return NULL;
3123}
3124
3125clang_type_t
3126ClangASTContext::GetEnumerationIntegerType (clang_type_t enum_clang_type)
3127{
3128    QualType enum_qual_type (QualType::getFromOpaquePtr(enum_clang_type));
3129
3130    clang::Type *clang_type = enum_qual_type.getTypePtr();
3131    if (clang_type)
3132    {
3133        const EnumType *enum_type = dyn_cast<EnumType>(clang_type);
3134        if (enum_type)
3135        {
3136            EnumDecl *enum_decl = enum_type->getDecl();
3137            if (enum_decl)
3138                return enum_decl->getIntegerType().getAsOpaquePtr();
3139        }
3140    }
3141    return NULL;
3142}
3143bool
3144ClangASTContext::AddEnumerationValueToEnumerationType
3145(
3146    clang_type_t enum_clang_type,
3147    clang_type_t enumerator_clang_type,
3148    const Declaration &decl,
3149    const char *name,
3150    int64_t enum_value,
3151    uint32_t enum_value_bit_size
3152)
3153{
3154    if (enum_clang_type && enumerator_clang_type && name)
3155    {
3156        // TODO: Do something intelligent with the Declaration object passed in
3157        // like maybe filling in the SourceLocation with it...
3158        ASTContext *ast_context = getASTContext();
3159        IdentifierTable *identifier_table = getIdentifierTable();
3160
3161        assert (ast_context != NULL);
3162        assert (identifier_table != NULL);
3163        QualType enum_qual_type (QualType::getFromOpaquePtr(enum_clang_type));
3164
3165        clang::Type *clang_type = enum_qual_type.getTypePtr();
3166        if (clang_type)
3167        {
3168            const EnumType *enum_type = dyn_cast<EnumType>(clang_type);
3169
3170            if (enum_type)
3171            {
3172                llvm::APSInt enum_llvm_apsint(enum_value_bit_size, false);
3173                enum_llvm_apsint = enum_value;
3174                EnumConstantDecl *enumerator_decl =
3175                    EnumConstantDecl::Create(*ast_context,
3176                                             enum_type->getDecl(),
3177                                             SourceLocation(),
3178                                             name ? &identifier_table->get(name) : NULL,    // Identifier
3179                                             QualType::getFromOpaquePtr(enumerator_clang_type),
3180                                             NULL,
3181                                             enum_llvm_apsint);
3182
3183                if (enumerator_decl)
3184                {
3185                    enum_type->getDecl()->addDecl(enumerator_decl);
3186                    return true;
3187                }
3188            }
3189        }
3190    }
3191    return false;
3192}
3193
3194#pragma mark Pointers & References
3195
3196clang_type_t
3197ClangASTContext::CreatePointerType (clang_type_t clang_type)
3198{
3199    if (clang_type)
3200    {
3201        QualType qual_type (QualType::getFromOpaquePtr(clang_type));
3202
3203        const clang::Type::TypeClass type_class = qual_type->getTypeClass();
3204        switch (type_class)
3205        {
3206        case clang::Type::ObjCObject:
3207        case clang::Type::ObjCInterface:
3208            return getASTContext()->getObjCObjectPointerType(qual_type).getAsOpaquePtr();
3209
3210        default:
3211            return getASTContext()->getPointerType(qual_type).getAsOpaquePtr();
3212        }
3213    }
3214    return NULL;
3215}
3216
3217clang_type_t
3218ClangASTContext::CreateLValueReferenceType (clang_type_t clang_type)
3219{
3220    if (clang_type)
3221        return getASTContext()->getLValueReferenceType (QualType::getFromOpaquePtr(clang_type)).getAsOpaquePtr();
3222    return NULL;
3223}
3224
3225clang_type_t
3226ClangASTContext::CreateRValueReferenceType (clang_type_t clang_type)
3227{
3228    if (clang_type)
3229        return getASTContext()->getRValueReferenceType (QualType::getFromOpaquePtr(clang_type)).getAsOpaquePtr();
3230    return NULL;
3231}
3232
3233clang_type_t
3234ClangASTContext::CreateMemberPointerType (clang_type_t clang_pointee_type, clang_type_t clang_class_type)
3235{
3236    if (clang_pointee_type && clang_pointee_type)
3237        return getASTContext()->getMemberPointerType(QualType::getFromOpaquePtr(clang_pointee_type),
3238                                                     QualType::getFromOpaquePtr(clang_class_type).getTypePtr()).getAsOpaquePtr();
3239    return NULL;
3240}
3241
3242size_t
3243ClangASTContext::GetPointerBitSize ()
3244{
3245    ASTContext *ast_context = getASTContext();
3246    return ast_context->getTypeSize(ast_context->VoidPtrTy);
3247}
3248
3249bool
3250ClangASTContext::IsPointerOrReferenceType (clang_type_t clang_type, clang_type_t*target_type)
3251{
3252    if (clang_type == NULL)
3253        return false;
3254
3255    QualType qual_type (QualType::getFromOpaquePtr(clang_type));
3256    const clang::Type::TypeClass type_class = qual_type->getTypeClass();
3257    switch (type_class)
3258    {
3259    case clang::Type::ObjCObjectPointer:
3260        if (target_type)
3261            *target_type = cast<ObjCObjectPointerType>(qual_type)->getPointeeType().getAsOpaquePtr();
3262        return true;
3263    case clang::Type::BlockPointer:
3264        if (target_type)
3265            *target_type = cast<BlockPointerType>(qual_type)->getPointeeType().getAsOpaquePtr();
3266        return true;
3267    case clang::Type::Pointer:
3268        if (target_type)
3269            *target_type = cast<PointerType>(qual_type)->getPointeeType().getAsOpaquePtr();
3270        return true;
3271    case clang::Type::MemberPointer:
3272        if (target_type)
3273            *target_type = cast<MemberPointerType>(qual_type)->getPointeeType().getAsOpaquePtr();
3274        return true;
3275    case clang::Type::LValueReference:
3276        if (target_type)
3277            *target_type = cast<LValueReferenceType>(qual_type)->desugar().getAsOpaquePtr();
3278        return true;
3279    case clang::Type::RValueReference:
3280        if (target_type)
3281            *target_type = cast<LValueReferenceType>(qual_type)->desugar().getAsOpaquePtr();
3282        return true;
3283    case clang::Type::Typedef:
3284        return ClangASTContext::IsPointerOrReferenceType (cast<TypedefType>(qual_type)->LookThroughTypedefs().getAsOpaquePtr());
3285    default:
3286        break;
3287    }
3288    return false;
3289}
3290
3291bool
3292ClangASTContext::IsIntegerType (clang_type_t clang_type, bool &is_signed)
3293{
3294    if (!clang_type)
3295        return false;
3296
3297    QualType qual_type (QualType::getFromOpaquePtr(clang_type));
3298    const BuiltinType *builtin_type = dyn_cast<BuiltinType>(qual_type->getCanonicalTypeInternal());
3299
3300    if (builtin_type)
3301    {
3302        if (builtin_type->isInteger())
3303            is_signed = builtin_type->isSignedInteger();
3304
3305        return true;
3306    }
3307
3308    return false;
3309}
3310
3311bool
3312ClangASTContext::IsPointerType (clang_type_t clang_type, clang_type_t*target_type)
3313{
3314    if (clang_type)
3315    {
3316        QualType qual_type (QualType::getFromOpaquePtr(clang_type));
3317        const clang::Type::TypeClass type_class = qual_type->getTypeClass();
3318        switch (type_class)
3319        {
3320        case clang::Type::ObjCObjectPointer:
3321            if (target_type)
3322                *target_type = cast<ObjCObjectPointerType>(qual_type)->getPointeeType().getAsOpaquePtr();
3323            return true;
3324        case clang::Type::BlockPointer:
3325            if (target_type)
3326                *target_type = cast<BlockPointerType>(qual_type)->getPointeeType().getAsOpaquePtr();
3327            return true;
3328        case clang::Type::Pointer:
3329            if (target_type)
3330                *target_type = cast<PointerType>(qual_type)->getPointeeType().getAsOpaquePtr();
3331            return true;
3332        case clang::Type::MemberPointer:
3333            if (target_type)
3334                *target_type = cast<MemberPointerType>(qual_type)->getPointeeType().getAsOpaquePtr();
3335            return true;
3336        case clang::Type::Typedef:
3337            return ClangASTContext::IsPointerOrReferenceType (cast<TypedefType>(qual_type)->LookThroughTypedefs().getAsOpaquePtr(), target_type);
3338        default:
3339            break;
3340        }
3341    }
3342    return false;
3343}
3344
3345bool
3346ClangASTContext::IsFloatingPointType (clang_type_t clang_type, uint32_t &count, bool &is_complex)
3347{
3348    if (clang_type)
3349    {
3350        QualType qual_type (QualType::getFromOpaquePtr(clang_type));
3351
3352        if (const BuiltinType *BT = dyn_cast<BuiltinType>(qual_type->getCanonicalTypeInternal()))
3353        {
3354            clang::BuiltinType::Kind kind = BT->getKind();
3355            if (kind >= BuiltinType::Float && kind <= BuiltinType::LongDouble)
3356            {
3357                count = 1;
3358                is_complex = false;
3359                return true;
3360            }
3361        }
3362        else if (const ComplexType *CT = dyn_cast<ComplexType>(qual_type->getCanonicalTypeInternal()))
3363        {
3364            if (IsFloatingPointType(CT->getElementType().getAsOpaquePtr(), count, is_complex))
3365            {
3366                count = 2;
3367                is_complex = true;
3368                return true;
3369            }
3370        }
3371        else if (const VectorType *VT = dyn_cast<VectorType>(qual_type->getCanonicalTypeInternal()))
3372        {
3373            if (IsFloatingPointType(VT->getElementType().getAsOpaquePtr(), count, is_complex))
3374            {
3375                count = VT->getNumElements();
3376                is_complex = false;
3377                return true;
3378            }
3379        }
3380    }
3381    return false;
3382}
3383
3384bool
3385ClangASTContext::IsCXXClassType (clang_type_t clang_type)
3386{
3387    if (clang_type)
3388    {
3389        QualType qual_type (QualType::getFromOpaquePtr(clang_type));
3390        if (qual_type->getAsCXXRecordDecl() != NULL)
3391            return true;
3392    }
3393    return false;
3394}
3395
3396bool
3397ClangASTContext::IsObjCClassType (clang_type_t clang_type)
3398{
3399    if (clang_type)
3400    {
3401        QualType qual_type (QualType::getFromOpaquePtr(clang_type));
3402        if (qual_type->isObjCObjectOrInterfaceType())
3403            return true;
3404    }
3405    return false;
3406}
3407
3408
3409
3410
3411bool
3412ClangASTContext::IsCStringType (clang_type_t clang_type, uint32_t &length)
3413{
3414    if (clang_type)
3415    {
3416        QualType qual_type (QualType::getFromOpaquePtr(clang_type));
3417        const clang::Type::TypeClass type_class = qual_type->getTypeClass();
3418        switch (type_class)
3419        {
3420        case clang::Type::ConstantArray:
3421            {
3422                ConstantArrayType *array = cast<ConstantArrayType>(qual_type.getTypePtr());
3423                QualType element_qual_type = array->getElementType();
3424                clang::Type *canonical_type = element_qual_type->getCanonicalTypeInternal().getTypePtr();
3425                if (canonical_type && canonical_type->isCharType())
3426                {
3427                    // We know the size of the array and it could be a C string
3428                    // since it is an array of characters
3429                    length = array->getSize().getLimitedValue();
3430                    return true;
3431                }
3432            }
3433            break;
3434
3435        case clang::Type::Pointer:
3436            {
3437                PointerType *pointer_type = cast<PointerType>(qual_type.getTypePtr());
3438                clang::Type *pointee_type_ptr = pointer_type->getPointeeType().getTypePtr();
3439                if (pointee_type_ptr)
3440                {
3441                    clang::Type *canonical_type_ptr = pointee_type_ptr->getCanonicalTypeInternal().getTypePtr();
3442                    length = 0; // No length info, read until a NULL terminator is received
3443                    if (canonical_type_ptr)
3444                        return canonical_type_ptr->isCharType();
3445                    else
3446                        return pointee_type_ptr->isCharType();
3447                }
3448            }
3449            break;
3450
3451        case clang::Type::Typedef:
3452            return ClangASTContext::IsCStringType (cast<TypedefType>(qual_type)->LookThroughTypedefs().getAsOpaquePtr(), length);
3453
3454        case clang::Type::LValueReference:
3455        case clang::Type::RValueReference:
3456            {
3457                ReferenceType *reference_type = cast<ReferenceType>(qual_type.getTypePtr());
3458                clang::Type *pointee_type_ptr = reference_type->getPointeeType().getTypePtr();
3459                if (pointee_type_ptr)
3460                {
3461                    clang::Type *canonical_type_ptr = pointee_type_ptr->getCanonicalTypeInternal().getTypePtr();
3462                    length = 0; // No length info, read until a NULL terminator is received
3463                    if (canonical_type_ptr)
3464                        return canonical_type_ptr->isCharType();
3465                    else
3466                        return pointee_type_ptr->isCharType();
3467                }
3468            }
3469            break;
3470        }
3471    }
3472    return false;
3473}
3474
3475bool
3476ClangASTContext::IsFunctionPointerType (clang_type_t clang_type)
3477{
3478    if (clang_type)
3479    {
3480        QualType qual_type (QualType::getFromOpaquePtr(clang_type));
3481
3482        if (qual_type->isFunctionPointerType())
3483            return true;
3484
3485        const clang::Type::TypeClass type_class = qual_type->getTypeClass();
3486        switch (type_class)
3487        {
3488        case clang::Type::Typedef:
3489            return ClangASTContext::IsFunctionPointerType (cast<TypedefType>(qual_type)->LookThroughTypedefs().getAsOpaquePtr());
3490
3491        case clang::Type::LValueReference:
3492        case clang::Type::RValueReference:
3493            {
3494                ReferenceType *reference_type = cast<ReferenceType>(qual_type.getTypePtr());
3495                if (reference_type)
3496                    return ClangASTContext::IsFunctionPointerType (reference_type->getPointeeType().getAsOpaquePtr());
3497            }
3498            break;
3499        }
3500    }
3501    return false;
3502}
3503
3504
3505
3506
3507bool
3508ClangASTContext::IsArrayType (clang_type_t clang_type, clang_type_t*member_type, uint64_t *size)
3509{
3510    if (!clang_type)
3511        return false;
3512
3513    QualType qual_type (QualType::getFromOpaquePtr(clang_type));
3514
3515    const clang::Type::TypeClass type_class = qual_type->getTypeClass();
3516    switch (type_class)
3517    {
3518    case clang::Type::ConstantArray:
3519        if (member_type)
3520            *member_type = cast<ConstantArrayType>(qual_type)->getElementType().getAsOpaquePtr();
3521        if (size)
3522            *size = cast<ConstantArrayType>(qual_type)->getSize().getLimitedValue(ULONG_LONG_MAX);
3523        return true;
3524    case clang::Type::IncompleteArray:
3525        if (member_type)
3526            *member_type = cast<IncompleteArrayType>(qual_type)->getElementType().getAsOpaquePtr();
3527        if (size)
3528            *size = 0;
3529        return true;
3530    case clang::Type::VariableArray:
3531        if (member_type)
3532            *member_type = cast<VariableArrayType>(qual_type)->getElementType().getAsOpaquePtr();
3533        if (size)
3534            *size = 0;
3535    case clang::Type::DependentSizedArray:
3536        if (member_type)
3537            *member_type = cast<DependentSizedArrayType>(qual_type)->getElementType().getAsOpaquePtr();
3538        if (size)
3539            *size = 0;
3540        return true;
3541    }
3542    return false;
3543}
3544
3545
3546#pragma mark Typedefs
3547
3548clang_type_t
3549ClangASTContext::CreateTypedefType (const char *name, clang_type_t clang_type, DeclContext *decl_ctx)
3550{
3551    if (clang_type)
3552    {
3553        QualType qual_type (QualType::getFromOpaquePtr(clang_type));
3554        ASTContext *ast_context = getASTContext();
3555        IdentifierTable *identifier_table = getIdentifierTable();
3556        assert (ast_context != NULL);
3557        assert (identifier_table != NULL);
3558        if (decl_ctx == NULL)
3559            decl_ctx = ast_context->getTranslationUnitDecl();
3560        TypedefDecl *decl = TypedefDecl::Create(*ast_context,
3561                                                decl_ctx,
3562                                                SourceLocation(),
3563                                                name ? &identifier_table->get(name) : NULL, // Identifier
3564                                                ast_context->CreateTypeSourceInfo(qual_type));
3565
3566        // Get a uniqued QualType for the typedef decl type
3567        return ast_context->getTypedefType (decl).getAsOpaquePtr();
3568    }
3569    return NULL;
3570}
3571
3572
3573std::string
3574ClangASTContext::GetTypeName (clang_type_t opaque_qual_type)
3575{
3576    std::string return_name;
3577
3578    QualType qual_type(QualType::getFromOpaquePtr(opaque_qual_type));
3579
3580    const TypedefType *typedef_type = qual_type->getAs<TypedefType>();
3581    if (typedef_type)
3582    {
3583        const TypedefDecl *typedef_decl = typedef_type->getDecl();
3584        return_name = typedef_decl->getQualifiedNameAsString();
3585    }
3586    else
3587    {
3588        return_name = qual_type.getAsString();
3589    }
3590
3591    return return_name;
3592}
3593
3594// Disable this for now since I can't seem to get a nicely formatted float
3595// out of the APFloat class without just getting the float, double or quad
3596// and then using a formatted print on it which defeats the purpose. We ideally
3597// would like to get perfect string values for any kind of float semantics
3598// so we can support remote targets. The code below also requires a patch to
3599// llvm::APInt.
3600//bool
3601//ClangASTContext::ConvertFloatValueToString (ASTContext *ast_context, clang_type_t clang_type, const uint8_t* bytes, size_t byte_size, int apint_byte_order, std::string &float_str)
3602//{
3603//  uint32_t count = 0;
3604//  bool is_complex = false;
3605//  if (ClangASTContext::IsFloatingPointType (clang_type, count, is_complex))
3606//  {
3607//      unsigned num_bytes_per_float = byte_size / count;
3608//      unsigned num_bits_per_float = num_bytes_per_float * 8;
3609//
3610//      float_str.clear();
3611//      uint32_t i;
3612//      for (i=0; i<count; i++)
3613//      {
3614//          APInt ap_int(num_bits_per_float, bytes + i * num_bytes_per_float, (APInt::ByteOrder)apint_byte_order);
3615//          bool is_ieee = false;
3616//          APFloat ap_float(ap_int, is_ieee);
3617//          char s[1024];
3618//          unsigned int hex_digits = 0;
3619//          bool upper_case = false;
3620//
3621//          if (ap_float.convertToHexString(s, hex_digits, upper_case, APFloat::rmNearestTiesToEven) > 0)
3622//          {
3623//              if (i > 0)
3624//                  float_str.append(", ");
3625//              float_str.append(s);
3626//              if (i == 1 && is_complex)
3627//                  float_str.append(1, 'i');
3628//          }
3629//      }
3630//      return !float_str.empty();
3631//  }
3632//  return false;
3633//}
3634
3635size_t
3636ClangASTContext::ConvertStringToFloatValue (ASTContext *ast_context, clang_type_t clang_type, const char *s, uint8_t *dst, size_t dst_size)
3637{
3638    if (clang_type)
3639    {
3640        QualType qual_type (QualType::getFromOpaquePtr(clang_type));
3641        uint32_t count = 0;
3642        bool is_complex = false;
3643        if (ClangASTContext::IsFloatingPointType (clang_type, count, is_complex))
3644        {
3645            // TODO: handle complex and vector types
3646            if (count != 1)
3647                return false;
3648
3649            StringRef s_sref(s);
3650            APFloat ap_float(ast_context->getFloatTypeSemantics(qual_type), s_sref);
3651
3652            const uint64_t bit_size = ast_context->getTypeSize (qual_type);
3653            const uint64_t byte_size = bit_size / 8;
3654            if (dst_size >= byte_size)
3655            {
3656                if (bit_size == sizeof(float)*8)
3657                {
3658                    float float32 = ap_float.convertToFloat();
3659                    ::memcpy (dst, &float32, byte_size);
3660                    return byte_size;
3661                }
3662                else if (bit_size >= 64)
3663                {
3664                    llvm::APInt ap_int(ap_float.bitcastToAPInt());
3665                    ::memcpy (dst, ap_int.getRawData(), byte_size);
3666                    return byte_size;
3667                }
3668            }
3669        }
3670    }
3671    return 0;
3672}
3673
3674unsigned
3675ClangASTContext::GetTypeQualifiers(clang_type_t clang_type)
3676{
3677    assert (clang_type);
3678
3679    QualType qual_type (QualType::getFromOpaquePtr(clang_type));
3680
3681    return qual_type.getQualifiers().getCVRQualifiers();
3682}
3683