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clang-1
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clang-1/tools/libclang/CXType.cpp

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//===- CXTypes.cpp - Implements 'CXTypes' aspect of libclang ------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===--------------------------------------------------------------------===//
//
// This file implements the 'CXTypes' API hooks in the Clang-C library.
//
//===--------------------------------------------------------------------===//
#include "CIndexer.h"
#include "CXTranslationUnit.h"
#include "CXCursor.h"
#include "CXString.h"
#include "CXType.h"
#include "clang/AST/Expr.h"
#include "clang/AST/Type.h"
#include "clang/AST/Decl.h"
#include "clang/AST/DeclObjC.h"
#include "clang/AST/DeclTemplate.h"
#include "clang/Frontend/ASTUnit.h"
using namespace clang;
static CXTypeKind GetBuiltinTypeKind(const BuiltinType *BT) {
#define BTCASE(K) case BuiltinType::K: return CXType_##K
switch (BT->getKind()) {
BTCASE(Void);
BTCASE(Bool);
BTCASE(Char_U);
BTCASE(UChar);
BTCASE(Char16);
BTCASE(Char32);
BTCASE(UShort);
BTCASE(UInt);
BTCASE(ULong);
BTCASE(ULongLong);
BTCASE(UInt128);
BTCASE(Char_S);
BTCASE(SChar);
case BuiltinType::WChar_S: return CXType_WChar;
case BuiltinType::WChar_U: return CXType_WChar;
BTCASE(Short);
BTCASE(Int);
BTCASE(Long);
BTCASE(LongLong);
BTCASE(Int128);
BTCASE(Float);
BTCASE(Double);
BTCASE(LongDouble);
BTCASE(NullPtr);
BTCASE(Overload);
BTCASE(Dependent);
BTCASE(ObjCId);
BTCASE(ObjCClass);
BTCASE(ObjCSel);
default:
return CXType_Unexposed;
}
#undef BTCASE
}
static CXTypeKind GetTypeKind(QualType T) {
const Type *TP = T.getTypePtrOrNull();
if (!TP)
return CXType_Invalid;
#define TKCASE(K) case Type::K: return CXType_##K
switch (TP->getTypeClass()) {
case Type::Builtin:
return GetBuiltinTypeKind(cast<BuiltinType>(TP));
TKCASE(Complex);
TKCASE(Pointer);
TKCASE(BlockPointer);
TKCASE(LValueReference);
TKCASE(RValueReference);
TKCASE(Record);
TKCASE(Enum);
TKCASE(Typedef);
TKCASE(ObjCInterface);
TKCASE(ObjCObjectPointer);
TKCASE(FunctionNoProto);
TKCASE(FunctionProto);
default:
return CXType_Unexposed;
}
#undef TKCASE
}
CXType cxtype::MakeCXType(QualType T, CXTranslationUnit TU) {
CXTypeKind TK = GetTypeKind(T);
CXType CT = { TK, { TK == CXType_Invalid ? 0 : T.getAsOpaquePtr(), TU }};
return CT;
}
using cxtype::MakeCXType;
static inline QualType GetQualType(CXType CT) {
return QualType::getFromOpaquePtr(CT.data[0]);
}
static inline CXTranslationUnit GetTU(CXType CT) {
return static_cast<CXTranslationUnit>(CT.data[1]);
}
extern "C" {
CXType clang_getCursorType(CXCursor C) {
using namespace cxcursor;
CXTranslationUnit TU = cxcursor::getCursorTU(C);
ASTContext &Context = static_cast<ASTUnit *>(TU->TUData)->getASTContext();
if (clang_isExpression(C.kind)) {
QualType T = cxcursor::getCursorExpr(C)->getType();
return MakeCXType(T, TU);
}
if (clang_isDeclaration(C.kind)) {
Decl *D = cxcursor::getCursorDecl(C);
if (TypeDecl *TD = dyn_cast<TypeDecl>(D))
return MakeCXType(Context.getTypeDeclType(TD), TU);
if (ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(D))
return MakeCXType(Context.getObjCInterfaceType(ID), TU);
if (ValueDecl *VD = dyn_cast<ValueDecl>(D))
return MakeCXType(VD->getType(), TU);
if (ObjCPropertyDecl *PD = dyn_cast<ObjCPropertyDecl>(D))
return MakeCXType(PD->getType(), TU);
if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D))
return MakeCXType(FD->getType(), TU);
return MakeCXType(QualType(), TU);
}
if (clang_isReference(C.kind)) {
switch (C.kind) {
case CXCursor_ObjCSuperClassRef: {
QualType T
= Context.getObjCInterfaceType(getCursorObjCSuperClassRef(C).first);
return MakeCXType(T, TU);
}
case CXCursor_ObjCClassRef: {
QualType T = Context.getObjCInterfaceType(getCursorObjCClassRef(C).first);
return MakeCXType(T, TU);
}
case CXCursor_TypeRef: {
QualType T = Context.getTypeDeclType(getCursorTypeRef(C).first);
return MakeCXType(T, TU);
}
case CXCursor_CXXBaseSpecifier:
return cxtype::MakeCXType(getCursorCXXBaseSpecifier(C)->getType(), TU);
case CXCursor_ObjCProtocolRef:
case CXCursor_TemplateRef:
case CXCursor_NamespaceRef:
case CXCursor_MemberRef:
case CXCursor_OverloadedDeclRef:
default:
break;
}
return MakeCXType(QualType(), TU);
}
return MakeCXType(QualType(), TU);
}
CXType clang_getCanonicalType(CXType CT) {
if (CT.kind == CXType_Invalid)
return CT;
QualType T = GetQualType(CT);
CXTranslationUnit TU = GetTU(CT);
if (T.isNull())
return MakeCXType(QualType(), GetTU(CT));
ASTUnit *AU = static_cast<ASTUnit*>(TU->TUData);
return MakeCXType(AU->getASTContext().getCanonicalType(T), TU);
}
unsigned clang_isConstQualifiedType(CXType CT) {
QualType T = GetQualType(CT);
return T.isLocalConstQualified();
}
unsigned clang_isVolatileQualifiedType(CXType CT) {
QualType T = GetQualType(CT);
return T.isLocalVolatileQualified();
}
unsigned clang_isRestrictQualifiedType(CXType CT) {
QualType T = GetQualType(CT);
return T.isLocalRestrictQualified();
}
CXType clang_getPointeeType(CXType CT) {
QualType T = GetQualType(CT);
const Type *TP = T.getTypePtrOrNull();
if (!TP)
return MakeCXType(QualType(), GetTU(CT));
switch (TP->getTypeClass()) {
case Type::Pointer:
T = cast<PointerType>(TP)->getPointeeType();
break;
case Type::BlockPointer:
T = cast<BlockPointerType>(TP)->getPointeeType();
break;
case Type::LValueReference:
case Type::RValueReference:
T = cast<ReferenceType>(TP)->getPointeeType();
break;
case Type::ObjCObjectPointer:
T = cast<ObjCObjectPointerType>(TP)->getPointeeType();
break;
default:
T = QualType();
break;
}
return MakeCXType(T, GetTU(CT));
}
CXCursor clang_getTypeDeclaration(CXType CT) {
if (CT.kind == CXType_Invalid)
return cxcursor::MakeCXCursorInvalid(CXCursor_NoDeclFound);
QualType T = GetQualType(CT);
const Type *TP = T.getTypePtrOrNull();
if (!TP)
return cxcursor::MakeCXCursorInvalid(CXCursor_NoDeclFound);
Decl *D = 0;
try_again:
switch (TP->getTypeClass()) {
case Type::Typedef:
D = cast<TypedefType>(TP)->getDecl();
break;
case Type::ObjCObject:
D = cast<ObjCObjectType>(TP)->getInterface();
break;
case Type::ObjCInterface:
D = cast<ObjCInterfaceType>(TP)->getDecl();
break;
case Type::Record:
case Type::Enum:
D = cast<TagType>(TP)->getDecl();
break;
case Type::TemplateSpecialization:
if (const RecordType *Record = TP->getAs<RecordType>())
D = Record->getDecl();
else
D = cast<TemplateSpecializationType>(TP)->getTemplateName()
.getAsTemplateDecl();
break;
case Type::InjectedClassName:
D = cast<InjectedClassNameType>(TP)->getDecl();
break;
// FIXME: Template type parameters!
case Type::Elaborated:
TP = cast<ElaboratedType>(TP)->getNamedType().getTypePtrOrNull();
goto try_again;
default:
break;
}
if (!D)
return cxcursor::MakeCXCursorInvalid(CXCursor_NoDeclFound);
return cxcursor::MakeCXCursor(D, GetTU(CT));
}
CXString clang_getTypeKindSpelling(enum CXTypeKind K) {
const char *s = 0;
#define TKIND(X) case CXType_##X: s = "" #X ""; break
switch (K) {
TKIND(Invalid);
TKIND(Unexposed);
TKIND(Void);
TKIND(Bool);
TKIND(Char_U);
TKIND(UChar);
TKIND(Char16);
TKIND(Char32);
TKIND(UShort);
TKIND(UInt);
TKIND(ULong);
TKIND(ULongLong);
TKIND(UInt128);
TKIND(Char_S);
TKIND(SChar);
case CXType_WChar: s = "WChar"; break;
TKIND(Short);
TKIND(Int);
TKIND(Long);
TKIND(LongLong);
TKIND(Int128);
TKIND(Float);
TKIND(Double);
TKIND(LongDouble);
TKIND(NullPtr);
TKIND(Overload);
TKIND(Dependent);
TKIND(ObjCId);
TKIND(ObjCClass);
TKIND(ObjCSel);
TKIND(Complex);
TKIND(Pointer);
TKIND(BlockPointer);
TKIND(LValueReference);
TKIND(RValueReference);
TKIND(Record);
TKIND(Enum);
TKIND(Typedef);
TKIND(ObjCInterface);
TKIND(ObjCObjectPointer);
TKIND(FunctionNoProto);
TKIND(FunctionProto);
}
#undef TKIND
return cxstring::createCXString(s);
}
unsigned clang_equalTypes(CXType A, CXType B) {
return A.data[0] == B.data[0] && A.data[1] == B.data[1];;
}
CXType clang_getResultType(CXType X) {
QualType T = GetQualType(X);
if (!T.getTypePtrOrNull())
return MakeCXType(QualType(), GetTU(X));
if (const FunctionType *FD = T->getAs<FunctionType>())
return MakeCXType(FD->getResultType(), GetTU(X));
return MakeCXType(QualType(), GetTU(X));
}
CXType clang_getCursorResultType(CXCursor C) {
if (clang_isDeclaration(C.kind)) {
Decl *D = cxcursor::getCursorDecl(C);
if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D))
return MakeCXType(MD->getResultType(), cxcursor::getCursorTU(C));
return clang_getResultType(clang_getCursorType(C));
}
return MakeCXType(QualType(), cxcursor::getCursorTU(C));
}
unsigned clang_isPODType(CXType X) {
QualType T = GetQualType(X);
if (!T.getTypePtrOrNull())
return 0;
return T->isPODType() ? 1 : 0;
}
CXString clang_getDeclObjCTypeEncoding(CXCursor C) {
if ((C.kind < CXCursor_FirstDecl) || (C.kind > CXCursor_LastDecl))
return cxstring::createCXString("");
Decl *D = static_cast<Decl*>(C.data[0]);
CXTranslationUnit TU = static_cast<CXTranslationUnit>(C.data[2]);
ASTUnit *AU = static_cast<ASTUnit*>(TU->TUData);
ASTContext &Ctx = AU->getASTContext();
std::string encoding;
if (ObjCMethodDecl *OMD = dyn_cast<ObjCMethodDecl>(D))
Ctx.getObjCEncodingForMethodDecl(OMD, encoding);
else if (ObjCPropertyDecl *OPD = dyn_cast<ObjCPropertyDecl>(D))
Ctx.getObjCEncodingForPropertyDecl(OPD, NULL, encoding);
else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D))
Ctx.getObjCEncodingForFunctionDecl(FD, encoding);
else {
QualType Ty;
if (TypeDecl *TD = dyn_cast<TypeDecl>(D))
Ty = Ctx.getTypeDeclType(TD);
if (ValueDecl *VD = dyn_cast<ValueDecl>(D))
Ty = VD->getType();
else return cxstring::createCXString("?");
Ctx.getObjCEncodingForType(Ty, encoding);
}
return cxstring::createCXString(encoding);
}
} // end: extern "C"
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