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//===--- Decl.cpp - Declaration AST Node Implementation -------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by Chris Lattner and 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/DeclObjC.h"
#include "clang/Basic/IdentifierTable.h"
using namespace clang;
// 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 bool StatSwitch = false;
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)) /* FIXME: add Objc decls */);
}
void Decl::addDeclKind(const 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 CompatibleAlias:
nObjcCompatibleAlias++;
break;
case PropertyDecl:
nObjcPropertyDecl++;
break;
}
}
// Out-of-line virtual method providing a home for Decl.
Decl::~Decl() {
}
const char *NamedDecl::getName() const {
if (const IdentifierInfo *II = getIdentifier())
return II->getName();
return "";
}
FunctionDecl::~FunctionDecl() {
delete[] ParamInfo;
}
unsigned FunctionDecl::getNumParams() const {
return cast<FunctionTypeProto>(getType().getTypePtr())->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);
}
}
/// 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 *name) {
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() == name)
return Members[i];
}
return 0;
}
void ObjcMethodDecl::setMethodParams(ParmVarDecl **NewParamInfo,
unsigned NumParams) {
assert(ParamInfo == 0 && "Already has param info!");
// Zero params -> null pointer.
if (NumParams) {
ParamInfo = new ParmVarDecl*[NumParams];
memcpy(ParamInfo, NewParamInfo, sizeof(ParmVarDecl*)*NumParams);
NumMethodParams = NumParams;
}
}
ObjcMethodDecl::~ObjcMethodDecl() {
delete[] ParamInfo;
}
/// ObjcAddInstanceVariablesToClass - Inserts instance variables
/// into ObjcInterfaceDecl's fields.
///
void ObjcInterfaceDecl::addInstanceVariablesToClass(ObjcIvarDecl **ivars,
unsigned numIvars,
SourceLocation RBrac) {
NumIvars = numIvars;
if (numIvars) {
Ivars = new ObjcIvarDecl*[numIvars];
memcpy(Ivars, ivars, numIvars*sizeof(ObjcIvarDecl*));
}
setLocEnd(RBrac);
}
/// ObjcAddInstanceVariablesToClassImpl - Checks for correctness of Instance
/// Variables (Ivars) relative to what declared in @implementation;s class.
/// Ivars into ObjcImplementationDecl's fields.
///
void ObjcImplementationDecl::ObjcAddInstanceVariablesToClassImpl(
ObjcIvarDecl **ivars, unsigned numIvars) {
NumIvars = numIvars;
if (numIvars) {
Ivars = new ObjcIvarDecl*[numIvars];
memcpy(Ivars, ivars, numIvars*sizeof(ObjcIvarDecl*));
}
}
/// addMethods - Insert instance and methods declarations into
/// ObjcInterfaceDecl's InsMethods and ClsMethods fields.
///
void ObjcInterfaceDecl::addMethods(ObjcMethodDecl **insMethods,
unsigned numInsMembers,
ObjcMethodDecl **clsMethods,
unsigned numClsMembers,
SourceLocation endLoc) {
NumInstanceMethods = numInsMembers;
if (numInsMembers) {
InstanceMethods = new ObjcMethodDecl*[numInsMembers];
memcpy(InstanceMethods, insMethods, numInsMembers*sizeof(ObjcMethodDecl*));
}
NumClassMethods = numClsMembers;
if (numClsMembers) {
ClassMethods = new ObjcMethodDecl*[numClsMembers];
memcpy(ClassMethods, clsMethods, numClsMembers*sizeof(ObjcMethodDecl*));
}
AtEndLoc = endLoc;
}
/// addMethods - Insert instance and methods declarations into
/// ObjcProtocolDecl's ProtoInsMethods and ProtoClsMethods fields.
///
void ObjcProtocolDecl::addMethods(ObjcMethodDecl **insMethods,
unsigned numInsMembers,
ObjcMethodDecl **clsMethods,
unsigned numClsMembers,
SourceLocation endLoc) {
NumInstanceMethods = numInsMembers;
if (numInsMembers) {
InstanceMethods = new ObjcMethodDecl*[numInsMembers];
memcpy(InstanceMethods, insMethods, numInsMembers*sizeof(ObjcMethodDecl*));
}
NumClassMethods = numClsMembers;
if (numClsMembers) {
ClassMethods = new ObjcMethodDecl*[numClsMembers];
memcpy(ClassMethods, clsMethods, numClsMembers*sizeof(ObjcMethodDecl*));
}
AtEndLoc = endLoc;
}
/// addMethods - Insert instance and methods declarations into
/// ObjcCategoryDecl's CatInsMethods and CatClsMethods fields.
///
void ObjcCategoryDecl::addMethods(ObjcMethodDecl **insMethods,
unsigned numInsMembers,
ObjcMethodDecl **clsMethods,
unsigned numClsMembers,
SourceLocation endLoc) {
NumInstanceMethods = numInsMembers;
if (numInsMembers) {
InstanceMethods = new ObjcMethodDecl*[numInsMembers];
memcpy(InstanceMethods, insMethods, numInsMembers*sizeof(ObjcMethodDecl*));
}
NumClassMethods = numClsMembers;
if (numClsMembers) {
ClassMethods = new ObjcMethodDecl*[numClsMembers];
memcpy(ClassMethods, clsMethods, numClsMembers*sizeof(ObjcMethodDecl*));
}
AtEndLoc = endLoc;
}
ObjcIvarDecl *ObjcInterfaceDecl::lookupInstanceVariable(
IdentifierInfo *ID, ObjcInterfaceDecl *&clsDeclared) {
ObjcInterfaceDecl* ClassDecl = this;
while (ClassDecl != NULL) {
ObjcIvarDecl **ivars = ClassDecl->getInstanceVariables();
int ivarCount = ClassDecl->getNumInstanceVariables();
for (int i = 0; i < ivarCount; ++i) {
if (ivars[i]->getIdentifier() == ID) {
clsDeclared = ClassDecl;
return ivars[i];
}
}
ClassDecl = ClassDecl->getSuperClass();
}
return NULL;
}
// lookupInstanceMethod - This method returns an instance method by looking in
// the class, it's categories, and it's super classes (using a linear search).
ObjcMethodDecl *ObjcInterfaceDecl::lookupInstanceMethod(Selector &Sel) {
ObjcInterfaceDecl* ClassDecl = this;
while (ClassDecl != NULL) {
ObjcMethodDecl **methods = ClassDecl->getInstanceMethods();
int methodCount = ClassDecl->getNumInstanceMethods();
for (int i = 0; i < methodCount; ++i) {
if (methods[i]->getSelector() == Sel) {
return methods[i];
}
}
// Didn't find one yet - look through protocols.
ObjcProtocolDecl **protocols = ClassDecl->getReferencedProtocols();
int numProtocols = ClassDecl->getNumIntfRefProtocols();
for (int pIdx = 0; pIdx < numProtocols; pIdx++) {
ObjcMethodDecl **methods = protocols[pIdx]->getInstanceMethods();
int methodCount = protocols[pIdx]->getNumInstanceMethods();
for (int i = 0; i < methodCount; ++i) {
if (methods[i]->getSelector() == Sel) {
return methods[i];
}
}
}
// Didn't find one yet - now look through categories.
ObjcCategoryDecl *CatDecl = ClassDecl->getCategoryList();
while (CatDecl) {
ObjcMethodDecl **methods = CatDecl->getInstanceMethods();
int methodCount = CatDecl->getNumInstanceMethods();
for (int i = 0; i < methodCount; ++i) {
if (methods[i]->getSelector() == Sel) {
return methods[i];
}
}
CatDecl = CatDecl->getNextClassCategory();
}
ClassDecl = ClassDecl->getSuperClass();
}
return NULL;
}
// lookupClassMethod - This method returns a class method by looking in the
// class, it's categories, and it's super classes (using a linear search).
ObjcMethodDecl *ObjcInterfaceDecl::lookupClassMethod(Selector &Sel) {
ObjcInterfaceDecl* ClassDecl = this;
while (ClassDecl != NULL) {
ObjcMethodDecl **methods = ClassDecl->getClassMethods();
int methodCount = ClassDecl->getNumClassMethods();
for (int i = 0; i < methodCount; ++i) {
if (methods[i]->getSelector() == Sel) {
return methods[i];
}
}
// Didn't find one yet - look through protocols.
ObjcProtocolDecl **protocols = ClassDecl->getReferencedProtocols();
int numProtocols = ClassDecl->getNumIntfRefProtocols();
for (int pIdx = 0; pIdx < numProtocols; pIdx++) {
ObjcMethodDecl **methods = protocols[pIdx]->getClassMethods();
int methodCount = protocols[pIdx]->getNumClassMethods();
for (int i = 0; i < methodCount; ++i) {
if (methods[i]->getSelector() == Sel) {
return methods[i];
}
}
}
// Didn't find one yet - now look through categories.
ObjcCategoryDecl *CatDecl = ClassDecl->getCategoryList();
while (CatDecl) {
ObjcMethodDecl **methods = CatDecl->getClassMethods();
int methodCount = CatDecl->getNumClassMethods();
for (int i = 0; i < methodCount; ++i) {
if (methods[i]->getSelector() == Sel) {
return methods[i];
}
}
CatDecl = CatDecl->getNextClassCategory();
}
ClassDecl = ClassDecl->getSuperClass();
}
return NULL;
}
// lookupInstanceMethod - This method returns an instance method by looking in
// the class implementation. Unlike interfaces, we don't look outside the
// implementation.
ObjcMethodDecl *ObjcImplementationDecl::lookupInstanceMethod(Selector &Sel) {
ObjcMethodDecl *const*methods = getInstanceMethods();
int methodCount = getNumInstanceMethods();
for (int i = 0; i < methodCount; ++i) {
if (methods[i]->getSelector() == Sel) {
return methods[i];
}
}
return NULL;
}
// lookupClassMethod - This method returns an instance method by looking in
// the class implementation. Unlike interfaces, we don't look outside the
// implementation.
ObjcMethodDecl *ObjcImplementationDecl::lookupClassMethod(Selector &Sel) {
ObjcMethodDecl *const*methods = getClassMethods();
int methodCount = getNumClassMethods();
for (int i = 0; i < methodCount; ++i) {
if (methods[i]->getSelector() == Sel) {
return methods[i];
}
}
return NULL;
}
// lookupInstanceMethod - This method returns an instance method by looking in
// the class implementation. Unlike interfaces, we don't look outside the
// implementation.
ObjcMethodDecl *ObjcCategoryImplDecl::lookupInstanceMethod(Selector &Sel) {
ObjcMethodDecl *const*methods = getInstanceMethods();
int methodCount = getNumInstanceMethods();
for (int i = 0; i < methodCount; ++i) {
if (methods[i]->getSelector() == Sel) {
return methods[i];
}
}
return NULL;
}
// lookupClassMethod - This method returns an instance method by looking in
// the class implementation. Unlike interfaces, we don't look outside the
// implementation.
ObjcMethodDecl *ObjcCategoryImplDecl::lookupClassMethod(Selector &Sel) {
ObjcMethodDecl *const*methods = getClassMethods();
int methodCount = getNumClassMethods();
for (int i = 0; i < methodCount; ++i) {
if (methods[i]->getSelector() == Sel) {
return methods[i];
}
}
return NULL;
}