1 //===- CXTypes.cpp - Implements 'CXTypes' aspect of libclang ------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===--------------------------------------------------------------------===//
10 // This file implements the 'CXTypes' API hooks in the Clang-C library.
12 //===--------------------------------------------------------------------===//
15 #include "CXTranslationUnit.h"
19 #include "clang/AST/Expr.h"
20 #include "clang/AST/Type.h"
21 #include "clang/AST/Decl.h"
22 #include "clang/AST/DeclObjC.h"
23 #include "clang/AST/DeclTemplate.h"
24 #include "clang/Frontend/ASTUnit.h"
26 using namespace clang;
28 static CXTypeKind GetBuiltinTypeKind(const BuiltinType *BT) {
29 #define BTCASE(K) case BuiltinType::K: return CXType_##K
30 switch (BT->getKind()) {
44 case BuiltinType::WChar_S: return CXType_WChar;
45 case BuiltinType::WChar_U: return CXType_WChar;
61 return CXType_Unexposed;
66 static CXTypeKind GetTypeKind(QualType T) {
67 const Type *TP = T.getTypePtrOrNull();
69 return CXType_Invalid;
71 #define TKCASE(K) case Type::K: return CXType_##K
72 switch (TP->getTypeClass()) {
74 return GetBuiltinTypeKind(cast<BuiltinType>(TP));
78 TKCASE(LValueReference);
79 TKCASE(RValueReference);
83 TKCASE(ObjCInterface);
84 TKCASE(ObjCObjectPointer);
85 TKCASE(FunctionNoProto);
86 TKCASE(FunctionProto);
87 TKCASE(ConstantArray);
90 return CXType_Unexposed;
96 CXType cxtype::MakeCXType(QualType T, CXTranslationUnit TU) {
97 CXTypeKind TK = GetTypeKind(T);
98 CXType CT = { TK, { TK == CXType_Invalid ? 0 : T.getAsOpaquePtr(), TU }};
102 using cxtype::MakeCXType;
104 static inline QualType GetQualType(CXType CT) {
105 return QualType::getFromOpaquePtr(CT.data[0]);
108 static inline CXTranslationUnit GetTU(CXType CT) {
109 return static_cast<CXTranslationUnit>(CT.data[1]);
114 CXType clang_getCursorType(CXCursor C) {
115 using namespace cxcursor;
117 CXTranslationUnit TU = cxcursor::getCursorTU(C);
118 ASTContext &Context = static_cast<ASTUnit *>(TU->TUData)->getASTContext();
119 if (clang_isExpression(C.kind)) {
120 QualType T = cxcursor::getCursorExpr(C)->getType();
121 return MakeCXType(T, TU);
124 if (clang_isDeclaration(C.kind)) {
125 Decl *D = cxcursor::getCursorDecl(C);
127 return MakeCXType(QualType(), TU);
129 if (TypeDecl *TD = dyn_cast<TypeDecl>(D))
130 return MakeCXType(Context.getTypeDeclType(TD), TU);
131 if (ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(D))
132 return MakeCXType(Context.getObjCInterfaceType(ID), TU);
133 if (ValueDecl *VD = dyn_cast<ValueDecl>(D))
134 return MakeCXType(VD->getType(), TU);
135 if (ObjCPropertyDecl *PD = dyn_cast<ObjCPropertyDecl>(D))
136 return MakeCXType(PD->getType(), TU);
137 if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D))
138 return MakeCXType(FD->getType(), TU);
139 return MakeCXType(QualType(), TU);
142 if (clang_isReference(C.kind)) {
144 case CXCursor_ObjCSuperClassRef: {
146 = Context.getObjCInterfaceType(getCursorObjCSuperClassRef(C).first);
147 return MakeCXType(T, TU);
150 case CXCursor_ObjCClassRef: {
151 QualType T = Context.getObjCInterfaceType(getCursorObjCClassRef(C).first);
152 return MakeCXType(T, TU);
155 case CXCursor_TypeRef: {
156 QualType T = Context.getTypeDeclType(getCursorTypeRef(C).first);
157 return MakeCXType(T, TU);
161 case CXCursor_CXXBaseSpecifier:
162 return cxtype::MakeCXType(getCursorCXXBaseSpecifier(C)->getType(), TU);
164 case CXCursor_MemberRef:
165 return cxtype::MakeCXType(getCursorMemberRef(C).first->getType(), TU);
167 case CXCursor_VariableRef:
168 return cxtype::MakeCXType(getCursorVariableRef(C).first->getType(), TU);
170 case CXCursor_ObjCProtocolRef:
171 case CXCursor_TemplateRef:
172 case CXCursor_NamespaceRef:
173 case CXCursor_OverloadedDeclRef:
178 return MakeCXType(QualType(), TU);
181 return MakeCXType(QualType(), TU);
184 CXType clang_getTypedefDeclUnderlyingType(CXCursor C) {
185 using namespace cxcursor;
186 CXTranslationUnit TU = cxcursor::getCursorTU(C);
188 if (clang_isDeclaration(C.kind)) {
189 Decl *D = cxcursor::getCursorDecl(C);
191 if (TypedefNameDecl *TD = dyn_cast_or_null<TypedefNameDecl>(D)) {
192 QualType T = TD->getUnderlyingType();
193 return MakeCXType(T, TU);
196 return MakeCXType(QualType(), TU);
199 return MakeCXType(QualType(), TU);
202 CXType clang_getEnumDeclIntegerType(CXCursor C) {
203 using namespace cxcursor;
204 CXTranslationUnit TU = cxcursor::getCursorTU(C);
206 if (clang_isDeclaration(C.kind)) {
207 Decl *D = cxcursor::getCursorDecl(C);
209 if (EnumDecl *TD = dyn_cast_or_null<EnumDecl>(D)) {
210 QualType T = TD->getIntegerType();
211 return MakeCXType(T, TU);
214 return MakeCXType(QualType(), TU);
217 return MakeCXType(QualType(), TU);
220 long long clang_getEnumConstantDeclValue(CXCursor C) {
221 using namespace cxcursor;
223 if (clang_isDeclaration(C.kind)) {
224 Decl *D = cxcursor::getCursorDecl(C);
226 if (EnumConstantDecl *TD = dyn_cast_or_null<EnumConstantDecl>(D)) {
227 return TD->getInitVal().getSExtValue();
236 unsigned long long clang_getEnumConstantDeclUnsignedValue(CXCursor C) {
237 using namespace cxcursor;
239 if (clang_isDeclaration(C.kind)) {
240 Decl *D = cxcursor::getCursorDecl(C);
242 if (EnumConstantDecl *TD = dyn_cast_or_null<EnumConstantDecl>(D)) {
243 return TD->getInitVal().getZExtValue();
252 CXType clang_getCanonicalType(CXType CT) {
253 if (CT.kind == CXType_Invalid)
256 QualType T = GetQualType(CT);
257 CXTranslationUnit TU = GetTU(CT);
260 return MakeCXType(QualType(), GetTU(CT));
262 ASTUnit *AU = static_cast<ASTUnit*>(TU->TUData);
263 return MakeCXType(AU->getASTContext().getCanonicalType(T), TU);
266 unsigned clang_isConstQualifiedType(CXType CT) {
267 QualType T = GetQualType(CT);
268 return T.isLocalConstQualified();
271 unsigned clang_isVolatileQualifiedType(CXType CT) {
272 QualType T = GetQualType(CT);
273 return T.isLocalVolatileQualified();
276 unsigned clang_isRestrictQualifiedType(CXType CT) {
277 QualType T = GetQualType(CT);
278 return T.isLocalRestrictQualified();
281 CXType clang_getPointeeType(CXType CT) {
282 QualType T = GetQualType(CT);
283 const Type *TP = T.getTypePtrOrNull();
286 return MakeCXType(QualType(), GetTU(CT));
288 switch (TP->getTypeClass()) {
290 T = cast<PointerType>(TP)->getPointeeType();
292 case Type::BlockPointer:
293 T = cast<BlockPointerType>(TP)->getPointeeType();
295 case Type::LValueReference:
296 case Type::RValueReference:
297 T = cast<ReferenceType>(TP)->getPointeeType();
299 case Type::ObjCObjectPointer:
300 T = cast<ObjCObjectPointerType>(TP)->getPointeeType();
306 return MakeCXType(T, GetTU(CT));
309 CXCursor clang_getTypeDeclaration(CXType CT) {
310 if (CT.kind == CXType_Invalid)
311 return cxcursor::MakeCXCursorInvalid(CXCursor_NoDeclFound);
313 QualType T = GetQualType(CT);
314 const Type *TP = T.getTypePtrOrNull();
317 return cxcursor::MakeCXCursorInvalid(CXCursor_NoDeclFound);
322 switch (TP->getTypeClass()) {
324 D = cast<TypedefType>(TP)->getDecl();
326 case Type::ObjCObject:
327 D = cast<ObjCObjectType>(TP)->getInterface();
329 case Type::ObjCInterface:
330 D = cast<ObjCInterfaceType>(TP)->getDecl();
334 D = cast<TagType>(TP)->getDecl();
336 case Type::TemplateSpecialization:
337 if (const RecordType *Record = TP->getAs<RecordType>())
338 D = Record->getDecl();
340 D = cast<TemplateSpecializationType>(TP)->getTemplateName()
341 .getAsTemplateDecl();
344 case Type::InjectedClassName:
345 D = cast<InjectedClassNameType>(TP)->getDecl();
348 // FIXME: Template type parameters!
350 case Type::Elaborated:
351 TP = cast<ElaboratedType>(TP)->getNamedType().getTypePtrOrNull();
359 return cxcursor::MakeCXCursorInvalid(CXCursor_NoDeclFound);
361 return cxcursor::MakeCXCursor(D, GetTU(CT));
364 CXString clang_getTypeKindSpelling(enum CXTypeKind K) {
366 #define TKIND(X) case CXType_##X: s = "" #X ""; break
383 case CXType_WChar: s = "WChar"; break;
401 TKIND(LValueReference);
402 TKIND(RValueReference);
406 TKIND(ObjCInterface);
407 TKIND(ObjCObjectPointer);
408 TKIND(FunctionNoProto);
409 TKIND(FunctionProto);
410 TKIND(ConstantArray);
414 return cxstring::createCXString(s);
417 unsigned clang_equalTypes(CXType A, CXType B) {
418 return A.data[0] == B.data[0] && A.data[1] == B.data[1];;
421 unsigned clang_isFunctionTypeVariadic(CXType X) {
422 QualType T = GetQualType(X);
426 if (const FunctionProtoType *FD = T->getAs<FunctionProtoType>())
427 return (unsigned)FD->isVariadic();
429 if (T->getAs<FunctionNoProtoType>())
435 CXCallingConv clang_getFunctionTypeCallingConv(CXType X) {
436 QualType T = GetQualType(X);
438 return CXCallingConv_Invalid;
440 if (const FunctionType *FD = T->getAs<FunctionType>()) {
441 #define TCALLINGCONV(X) case CC_##X: return CXCallingConv_##X
442 switch (FD->getCallConv()) {
443 TCALLINGCONV(Default);
445 TCALLINGCONV(X86StdCall);
446 TCALLINGCONV(X86FastCall);
447 TCALLINGCONV(X86ThisCall);
448 TCALLINGCONV(X86Pascal);
450 TCALLINGCONV(AAPCS_VFP);
455 return CXCallingConv_Invalid;
458 int clang_getNumArgTypes(CXType X) {
459 QualType T = GetQualType(X);
463 if (const FunctionProtoType *FD = T->getAs<FunctionProtoType>()) {
464 return FD->getNumArgs();
467 if (T->getAs<FunctionNoProtoType>()) {
474 CXType clang_getArgType(CXType X, unsigned i) {
475 QualType T = GetQualType(X);
477 return MakeCXType(QualType(), GetTU(X));
479 if (const FunctionProtoType *FD = T->getAs<FunctionProtoType>()) {
480 unsigned numArgs = FD->getNumArgs();
482 return MakeCXType(QualType(), GetTU(X));
484 return MakeCXType(FD->getArgType(i), GetTU(X));
487 return MakeCXType(QualType(), GetTU(X));
490 CXType clang_getResultType(CXType X) {
491 QualType T = GetQualType(X);
493 return MakeCXType(QualType(), GetTU(X));
495 if (const FunctionType *FD = T->getAs<FunctionType>())
496 return MakeCXType(FD->getResultType(), GetTU(X));
498 return MakeCXType(QualType(), GetTU(X));
501 CXType clang_getCursorResultType(CXCursor C) {
502 if (clang_isDeclaration(C.kind)) {
503 Decl *D = cxcursor::getCursorDecl(C);
504 if (const ObjCMethodDecl *MD = dyn_cast_or_null<ObjCMethodDecl>(D))
505 return MakeCXType(MD->getResultType(), cxcursor::getCursorTU(C));
507 return clang_getResultType(clang_getCursorType(C));
510 return MakeCXType(QualType(), cxcursor::getCursorTU(C));
513 unsigned clang_isPODType(CXType X) {
514 QualType T = GetQualType(X);
518 CXTranslationUnit TU = GetTU(X);
519 ASTUnit *AU = static_cast<ASTUnit*>(TU->TUData);
521 return T.isPODType(AU->getASTContext()) ? 1 : 0;
524 CXType clang_getElementType(CXType CT) {
525 QualType ET = QualType();
526 QualType T = GetQualType(CT);
527 const Type *TP = T.getTypePtrOrNull();
530 switch (TP->getTypeClass()) {
531 case Type::ConstantArray:
532 ET = cast<ConstantArrayType> (TP)->getElementType();
535 ET = cast<VectorType> (TP)->getElementType();
538 ET = cast<ComplexType> (TP)->getElementType();
544 return MakeCXType(ET, GetTU(CT));
547 long long clang_getNumElements(CXType CT) {
548 long long result = -1;
549 QualType T = GetQualType(CT);
550 const Type *TP = T.getTypePtrOrNull();
553 switch (TP->getTypeClass()) {
554 case Type::ConstantArray:
555 result = cast<ConstantArrayType> (TP)->getSize().getSExtValue();
558 result = cast<VectorType> (TP)->getNumElements();
567 CXType clang_getArrayElementType(CXType CT) {
568 QualType ET = QualType();
569 QualType T = GetQualType(CT);
570 const Type *TP = T.getTypePtrOrNull();
573 switch (TP->getTypeClass()) {
574 case Type::ConstantArray:
575 ET = cast<ConstantArrayType> (TP)->getElementType();
581 return MakeCXType(ET, GetTU(CT));
584 long long clang_getArraySize(CXType CT) {
585 long long result = -1;
586 QualType T = GetQualType(CT);
587 const Type *TP = T.getTypePtrOrNull();
590 switch (TP->getTypeClass()) {
591 case Type::ConstantArray:
592 result = cast<ConstantArrayType> (TP)->getSize().getSExtValue();
601 CXString clang_getDeclObjCTypeEncoding(CXCursor C) {
602 if ((C.kind < CXCursor_FirstDecl) || (C.kind > CXCursor_LastDecl))
603 return cxstring::createCXString("");
605 Decl *D = static_cast<Decl*>(C.data[0]);
606 CXTranslationUnit TU = static_cast<CXTranslationUnit>(C.data[2]);
607 ASTUnit *AU = static_cast<ASTUnit*>(TU->TUData);
608 ASTContext &Ctx = AU->getASTContext();
609 std::string encoding;
611 if (ObjCMethodDecl *OMD = dyn_cast<ObjCMethodDecl>(D)) {
612 if (Ctx.getObjCEncodingForMethodDecl(OMD, encoding))
613 return cxstring::createCXString("?");
614 } else if (ObjCPropertyDecl *OPD = dyn_cast<ObjCPropertyDecl>(D))
615 Ctx.getObjCEncodingForPropertyDecl(OPD, NULL, encoding);
616 else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D))
617 Ctx.getObjCEncodingForFunctionDecl(FD, encoding);
620 if (TypeDecl *TD = dyn_cast<TypeDecl>(D))
621 Ty = Ctx.getTypeDeclType(TD);
622 if (ValueDecl *VD = dyn_cast<ValueDecl>(D))
624 else return cxstring::createCXString("?");
625 Ctx.getObjCEncodingForType(Ty, encoding);
628 return cxstring::createCXString(encoding);