forked from OSchip/llvm-project
415 lines
16 KiB
C++
415 lines
16 KiB
C++
//===--- Decl.cpp - Declaration AST Node Implementation -------------------===//
|
|
//
|
|
// 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 Decl class and subclasses.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "clang/AST/Decl.h"
|
|
#include "clang/AST/ASTContext.h"
|
|
#include "clang/AST/Attr.h"
|
|
#include "clang/Basic/IdentifierTable.h"
|
|
#include "llvm/ADT/DenseMap.h"
|
|
using namespace clang;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Statistics
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// temporary statistics gathering
|
|
static unsigned nFuncs = 0;
|
|
static unsigned nBlockVars = 0;
|
|
static unsigned nFileVars = 0;
|
|
static unsigned nParmVars = 0;
|
|
static unsigned nSUC = 0;
|
|
static unsigned nEnumConst = 0;
|
|
static unsigned nEnumDecls = 0;
|
|
static unsigned nTypedef = 0;
|
|
static unsigned nFieldDecls = 0;
|
|
static unsigned nInterfaceDecls = 0;
|
|
static unsigned nClassDecls = 0;
|
|
static unsigned nMethodDecls = 0;
|
|
static unsigned nProtocolDecls = 0;
|
|
static unsigned nForwardProtocolDecls = 0;
|
|
static unsigned nCategoryDecls = 0;
|
|
static unsigned nIvarDecls = 0;
|
|
static unsigned nObjCImplementationDecls = 0;
|
|
static unsigned nObjCCategoryImpl = 0;
|
|
static unsigned nObjCCompatibleAlias = 0;
|
|
static unsigned nObjCPropertyDecl = 0;
|
|
static unsigned nLinkageSpecDecl = 0;
|
|
static unsigned nFileScopeAsmDecl = 0;
|
|
|
|
static bool StatSwitch = false;
|
|
|
|
// This keeps track of all decl attributes. Since so few decls have attrs, we
|
|
// keep them in a hash map instead of wasting space in the Decl class.
|
|
typedef llvm::DenseMap<const Decl*, Attr*> DeclAttrMapTy;
|
|
|
|
static DeclAttrMapTy *DeclAttrs = 0;
|
|
|
|
const char *Decl::getDeclKindName() const {
|
|
switch (DeclKind) {
|
|
default: assert(0 && "Unknown decl kind!");
|
|
case Typedef: return "Typedef";
|
|
case Function: return "Function";
|
|
case BlockVar: return "BlockVar";
|
|
case FileVar: return "FileVar";
|
|
case ParmVar: return "ParmVar";
|
|
case EnumConstant: return "EnumConstant";
|
|
case ObjCInterface: return "ObjCInterface";
|
|
case ObjCClass: return "ObjCClass";
|
|
case ObjCMethod: return "ObjCMethod";
|
|
case ObjCProtocol: return "ObjCProtocol";
|
|
case ObjCForwardProtocol: return "ObjCForwardProtocol";
|
|
case Struct: return "Struct";
|
|
case Union: return "Union";
|
|
case Class: return "Class";
|
|
case Enum: return "Enum";
|
|
}
|
|
}
|
|
|
|
bool Decl::CollectingStats(bool Enable) {
|
|
if (Enable)
|
|
StatSwitch = true;
|
|
return StatSwitch;
|
|
}
|
|
|
|
void Decl::PrintStats() {
|
|
fprintf(stderr, "*** Decl Stats:\n");
|
|
fprintf(stderr, " %d decls total.\n",
|
|
int(nFuncs+nBlockVars+nFileVars+nParmVars+nFieldDecls+nSUC+
|
|
nEnumDecls+nEnumConst+nTypedef+nInterfaceDecls+nClassDecls+
|
|
nMethodDecls+nProtocolDecls+nCategoryDecls+nIvarDecls));
|
|
fprintf(stderr, " %d function decls, %d each (%d bytes)\n",
|
|
nFuncs, (int)sizeof(FunctionDecl), int(nFuncs*sizeof(FunctionDecl)));
|
|
fprintf(stderr, " %d block variable decls, %d each (%d bytes)\n",
|
|
nBlockVars, (int)sizeof(BlockVarDecl),
|
|
int(nBlockVars*sizeof(BlockVarDecl)));
|
|
fprintf(stderr, " %d file variable decls, %d each (%d bytes)\n",
|
|
nFileVars, (int)sizeof(FileVarDecl),
|
|
int(nFileVars*sizeof(FileVarDecl)));
|
|
fprintf(stderr, " %d parameter variable decls, %d each (%d bytes)\n",
|
|
nParmVars, (int)sizeof(ParmVarDecl),
|
|
int(nParmVars*sizeof(ParmVarDecl)));
|
|
fprintf(stderr, " %d field decls, %d each (%d bytes)\n",
|
|
nFieldDecls, (int)sizeof(FieldDecl),
|
|
int(nFieldDecls*sizeof(FieldDecl)));
|
|
fprintf(stderr, " %d struct/union/class decls, %d each (%d bytes)\n",
|
|
nSUC, (int)sizeof(RecordDecl),
|
|
int(nSUC*sizeof(RecordDecl)));
|
|
fprintf(stderr, " %d enum decls, %d each (%d bytes)\n",
|
|
nEnumDecls, (int)sizeof(EnumDecl),
|
|
int(nEnumDecls*sizeof(EnumDecl)));
|
|
fprintf(stderr, " %d enum constant decls, %d each (%d bytes)\n",
|
|
nEnumConst, (int)sizeof(EnumConstantDecl),
|
|
int(nEnumConst*sizeof(EnumConstantDecl)));
|
|
fprintf(stderr, " %d typedef decls, %d each (%d bytes)\n",
|
|
nTypedef, (int)sizeof(TypedefDecl),int(nTypedef*sizeof(TypedefDecl)));
|
|
// Objective-C decls...
|
|
fprintf(stderr, " %d interface decls, %d each (%d bytes)\n",
|
|
nInterfaceDecls, (int)sizeof(ObjCInterfaceDecl),
|
|
int(nInterfaceDecls*sizeof(ObjCInterfaceDecl)));
|
|
fprintf(stderr, " %d instance variable decls, %d each (%d bytes)\n",
|
|
nIvarDecls, (int)sizeof(ObjCIvarDecl),
|
|
int(nIvarDecls*sizeof(ObjCIvarDecl)));
|
|
fprintf(stderr, " %d class decls, %d each (%d bytes)\n",
|
|
nClassDecls, (int)sizeof(ObjCClassDecl),
|
|
int(nClassDecls*sizeof(ObjCClassDecl)));
|
|
fprintf(stderr, " %d method decls, %d each (%d bytes)\n",
|
|
nMethodDecls, (int)sizeof(ObjCMethodDecl),
|
|
int(nMethodDecls*sizeof(ObjCMethodDecl)));
|
|
fprintf(stderr, " %d protocol decls, %d each (%d bytes)\n",
|
|
nProtocolDecls, (int)sizeof(ObjCProtocolDecl),
|
|
int(nProtocolDecls*sizeof(ObjCProtocolDecl)));
|
|
fprintf(stderr, " %d forward protocol decls, %d each (%d bytes)\n",
|
|
nForwardProtocolDecls, (int)sizeof(ObjCForwardProtocolDecl),
|
|
int(nForwardProtocolDecls*sizeof(ObjCForwardProtocolDecl)));
|
|
fprintf(stderr, " %d category decls, %d each (%d bytes)\n",
|
|
nCategoryDecls, (int)sizeof(ObjCCategoryDecl),
|
|
int(nCategoryDecls*sizeof(ObjCCategoryDecl)));
|
|
|
|
fprintf(stderr, " %d class implementation decls, %d each (%d bytes)\n",
|
|
nObjCImplementationDecls, (int)sizeof(ObjCImplementationDecl),
|
|
int(nObjCImplementationDecls*sizeof(ObjCImplementationDecl)));
|
|
|
|
fprintf(stderr, " %d class implementation decls, %d each (%d bytes)\n",
|
|
nObjCCategoryImpl, (int)sizeof(ObjCCategoryImplDecl),
|
|
int(nObjCCategoryImpl*sizeof(ObjCCategoryImplDecl)));
|
|
|
|
fprintf(stderr, " %d compatibility alias decls, %d each (%d bytes)\n",
|
|
nObjCCompatibleAlias, (int)sizeof(ObjCCompatibleAliasDecl),
|
|
int(nObjCCompatibleAlias*sizeof(ObjCCompatibleAliasDecl)));
|
|
|
|
fprintf(stderr, " %d property decls, %d each (%d bytes)\n",
|
|
nObjCPropertyDecl, (int)sizeof(ObjCPropertyDecl),
|
|
int(nObjCPropertyDecl*sizeof(ObjCPropertyDecl)));
|
|
|
|
fprintf(stderr, "Total bytes = %d\n",
|
|
int(nFuncs*sizeof(FunctionDecl)+nBlockVars*sizeof(BlockVarDecl)+
|
|
nFileVars*sizeof(FileVarDecl)+nParmVars*sizeof(ParmVarDecl)+
|
|
nFieldDecls*sizeof(FieldDecl)+nSUC*sizeof(RecordDecl)+
|
|
nEnumDecls*sizeof(EnumDecl)+nEnumConst*sizeof(EnumConstantDecl)+
|
|
nTypedef*sizeof(TypedefDecl)+
|
|
nInterfaceDecls*sizeof(ObjCInterfaceDecl)+
|
|
nIvarDecls*sizeof(ObjCIvarDecl)+
|
|
nClassDecls*sizeof(ObjCClassDecl)+
|
|
nMethodDecls*sizeof(ObjCMethodDecl)+
|
|
nProtocolDecls*sizeof(ObjCProtocolDecl)+
|
|
nForwardProtocolDecls*sizeof(ObjCForwardProtocolDecl)+
|
|
nCategoryDecls*sizeof(ObjCCategoryDecl)+
|
|
nObjCImplementationDecls*sizeof(ObjCImplementationDecl)+
|
|
nObjCCategoryImpl*sizeof(ObjCCategoryImplDecl)+
|
|
nObjCCompatibleAlias*sizeof(ObjCCompatibleAliasDecl)+
|
|
nObjCPropertyDecl*sizeof(ObjCPropertyDecl)+
|
|
nLinkageSpecDecl*sizeof(LinkageSpecDecl)+
|
|
nFileScopeAsmDecl*sizeof(FileScopeAsmDecl)));
|
|
|
|
}
|
|
|
|
void Decl::addDeclKind(Kind k) {
|
|
switch (k) {
|
|
case Typedef: nTypedef++; break;
|
|
case Function: nFuncs++; break;
|
|
case BlockVar: nBlockVars++; break;
|
|
case FileVar: nFileVars++; break;
|
|
case ParmVar: nParmVars++; break;
|
|
case EnumConstant: nEnumConst++; break;
|
|
case Field: nFieldDecls++; break;
|
|
case Struct: case Union: case Class: nSUC++; break;
|
|
case Enum: nEnumDecls++; break;
|
|
case ObjCInterface: nInterfaceDecls++; break;
|
|
case ObjCClass: nClassDecls++; break;
|
|
case ObjCMethod: nMethodDecls++; break;
|
|
case ObjCProtocol: nProtocolDecls++; break;
|
|
case ObjCForwardProtocol: nForwardProtocolDecls++; break;
|
|
case ObjCCategory: nCategoryDecls++; break;
|
|
case ObjCIvar: nIvarDecls++; break;
|
|
case ObjCImplementation: nObjCImplementationDecls++; break;
|
|
case ObjCCategoryImpl: nObjCCategoryImpl++; break;
|
|
case ObjCCompatibleAlias: nObjCCompatibleAlias++; break;
|
|
case PropertyDecl: nObjCPropertyDecl++; break;
|
|
case LinkageSpec: nLinkageSpecDecl++; break;
|
|
case FileScopeAsm: nFileScopeAsmDecl++; break;
|
|
}
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Decl Allocation/Deallocation Method Implementations
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
BlockVarDecl *BlockVarDecl::Create(ASTContext &C, DeclContext *CD,
|
|
SourceLocation L,
|
|
IdentifierInfo *Id, QualType T,
|
|
StorageClass S, ScopedDecl *PrevDecl) {
|
|
void *Mem = C.getAllocator().Allocate<BlockVarDecl>();
|
|
return new (Mem) BlockVarDecl(CD, L, Id, T, S, PrevDecl);
|
|
}
|
|
|
|
|
|
FileVarDecl *FileVarDecl::Create(ASTContext &C, DeclContext *CD,
|
|
SourceLocation L, IdentifierInfo *Id,
|
|
QualType T, StorageClass S,
|
|
ScopedDecl *PrevDecl) {
|
|
void *Mem = C.getAllocator().Allocate<FileVarDecl>();
|
|
return new (Mem) FileVarDecl(CD, L, Id, T, S, PrevDecl);
|
|
}
|
|
|
|
ParmVarDecl *ParmVarDecl::Create(ASTContext &C, DeclContext *CD,
|
|
SourceLocation L, IdentifierInfo *Id,
|
|
QualType T, StorageClass S,
|
|
ScopedDecl *PrevDecl) {
|
|
void *Mem = C.getAllocator().Allocate<ParmVarDecl>();
|
|
return new (Mem) ParmVarDecl(CD, L, Id, T, S, PrevDecl);
|
|
}
|
|
|
|
FunctionDecl *FunctionDecl::Create(ASTContext &C, DeclContext *CD,
|
|
SourceLocation L,
|
|
IdentifierInfo *Id, QualType T,
|
|
StorageClass S, bool isInline,
|
|
ScopedDecl *PrevDecl) {
|
|
void *Mem = C.getAllocator().Allocate<FunctionDecl>();
|
|
return new (Mem) FunctionDecl(CD, L, Id, T, S, isInline, PrevDecl);
|
|
}
|
|
|
|
FieldDecl *FieldDecl::Create(ASTContext &C, SourceLocation L,
|
|
IdentifierInfo *Id, QualType T, Expr *BW) {
|
|
void *Mem = C.getAllocator().Allocate<FieldDecl>();
|
|
return new (Mem) FieldDecl(L, Id, T, BW);
|
|
}
|
|
|
|
|
|
EnumConstantDecl *EnumConstantDecl::Create(ASTContext &C, EnumDecl *CD,
|
|
SourceLocation L,
|
|
IdentifierInfo *Id, QualType T,
|
|
Expr *E, const llvm::APSInt &V,
|
|
ScopedDecl *PrevDecl){
|
|
void *Mem = C.getAllocator().Allocate<EnumConstantDecl>();
|
|
return new (Mem) EnumConstantDecl(CD, L, Id, T, E, V, PrevDecl);
|
|
}
|
|
|
|
TypedefDecl *TypedefDecl::Create(ASTContext &C, DeclContext *CD,
|
|
SourceLocation L,
|
|
IdentifierInfo *Id, QualType T,
|
|
ScopedDecl *PD) {
|
|
void *Mem = C.getAllocator().Allocate<TypedefDecl>();
|
|
return new (Mem) TypedefDecl(CD, L, Id, T, PD);
|
|
}
|
|
|
|
EnumDecl *EnumDecl::Create(ASTContext &C, DeclContext *CD, SourceLocation L,
|
|
IdentifierInfo *Id,
|
|
ScopedDecl *PrevDecl) {
|
|
void *Mem = C.getAllocator().Allocate<EnumDecl>();
|
|
return new (Mem) EnumDecl(CD, L, Id, PrevDecl);
|
|
}
|
|
|
|
RecordDecl *RecordDecl::Create(ASTContext &C, Kind DK, DeclContext *CD,
|
|
SourceLocation L, IdentifierInfo *Id,
|
|
ScopedDecl *PrevDecl) {
|
|
void *Mem = C.getAllocator().Allocate<RecordDecl>();
|
|
return new (Mem) RecordDecl(DK, CD, L, Id, PrevDecl);
|
|
}
|
|
|
|
FileScopeAsmDecl *FileScopeAsmDecl::Create(ASTContext &C,
|
|
SourceLocation L,
|
|
StringLiteral *Str) {
|
|
void *Mem = C.getAllocator().Allocate<FileScopeAsmDecl>();
|
|
return new (Mem) FileScopeAsmDecl(L, Str);
|
|
}
|
|
|
|
LinkageSpecDecl *LinkageSpecDecl::Create(ASTContext &C,
|
|
SourceLocation L,
|
|
LanguageIDs Lang, Decl *D) {
|
|
void *Mem = C.getAllocator().Allocate<LinkageSpecDecl>();
|
|
return new (Mem) LinkageSpecDecl(L, Lang, D);
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Decl Implementation
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// Out-of-line virtual method providing a home for Decl.
|
|
Decl::~Decl() {
|
|
if (!HasAttrs)
|
|
return;
|
|
|
|
DeclAttrMapTy::iterator it = DeclAttrs->find(this);
|
|
assert(it != DeclAttrs->end() && "No attrs found but HasAttrs is true!");
|
|
|
|
delete it->second;
|
|
DeclAttrs->erase(it);
|
|
if (DeclAttrs->empty()) {
|
|
delete DeclAttrs;
|
|
DeclAttrs = 0;
|
|
}
|
|
}
|
|
|
|
void Decl::addAttr(Attr *NewAttr) {
|
|
if (!DeclAttrs)
|
|
DeclAttrs = new DeclAttrMapTy();
|
|
|
|
Attr *&ExistingAttr = (*DeclAttrs)[this];
|
|
|
|
NewAttr->setNext(ExistingAttr);
|
|
ExistingAttr = NewAttr;
|
|
|
|
HasAttrs = true;
|
|
}
|
|
|
|
const Attr *Decl::getAttrs() const {
|
|
if (!HasAttrs)
|
|
return 0;
|
|
|
|
return (*DeclAttrs)[this];
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// DeclContext Implementation
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
DeclContext *DeclContext::getParent() const {
|
|
if (ScopedDecl *SD = dyn_cast<ScopedDecl>(this))
|
|
return SD->getDeclContext();
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
Decl *DeclContext::ToDecl (const DeclContext *D) {
|
|
return CastTo<Decl>(D);
|
|
}
|
|
|
|
DeclContext *DeclContext::FromDecl (const Decl *D) {
|
|
return CastTo<DeclContext>(D);
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// NamedDecl Implementation
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
const char *NamedDecl::getName() const {
|
|
if (const IdentifierInfo *II = getIdentifier())
|
|
return II->getName();
|
|
return "";
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// FunctionDecl Implementation
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
FunctionDecl::~FunctionDecl() {
|
|
delete[] ParamInfo;
|
|
delete Body;
|
|
}
|
|
|
|
unsigned FunctionDecl::getNumParams() const {
|
|
const FunctionType *FT = getType()->getAsFunctionType();
|
|
if (isa<FunctionTypeNoProto>(FT))
|
|
return 0;
|
|
return cast<FunctionTypeProto>(FT)->getNumArgs();
|
|
}
|
|
|
|
void FunctionDecl::setParams(ParmVarDecl **NewParamInfo, unsigned NumParams) {
|
|
assert(ParamInfo == 0 && "Already has param info!");
|
|
assert(NumParams == getNumParams() && "Parameter count mismatch!");
|
|
|
|
// Zero params -> null pointer.
|
|
if (NumParams) {
|
|
ParamInfo = new ParmVarDecl*[NumParams];
|
|
memcpy(ParamInfo, NewParamInfo, sizeof(ParmVarDecl*)*NumParams);
|
|
}
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// RecordDecl Implementation
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// defineBody - When created, RecordDecl's correspond to a forward declared
|
|
/// record. This method is used to mark the decl as being defined, with the
|
|
/// specified contents.
|
|
void RecordDecl::defineBody(FieldDecl **members, unsigned numMembers) {
|
|
assert(!isDefinition() && "Cannot redefine record!");
|
|
setDefinition(true);
|
|
NumMembers = numMembers;
|
|
if (numMembers) {
|
|
Members = new FieldDecl*[numMembers];
|
|
memcpy(Members, members, numMembers*sizeof(Decl*));
|
|
}
|
|
}
|
|
|
|
FieldDecl *RecordDecl::getMember(IdentifierInfo *II) {
|
|
if (Members == 0 || NumMembers < 0)
|
|
return 0;
|
|
|
|
// Linear search. When C++ classes come along, will likely need to revisit.
|
|
for (int i = 0; i != NumMembers; ++i)
|
|
if (Members[i]->getIdentifier() == II)
|
|
return Members[i];
|
|
return 0;
|
|
}
|