clang-1/lib/AST/DeclObjC.cpp

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//===--- DeclObjC.cpp - ObjC 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 Objective-C related Decl classes.
//
//===----------------------------------------------------------------------===//
#include "clang/AST/DeclObjC.h"
#include "clang/AST/ASTContext.h"
using namespace clang;
//===----------------------------------------------------------------------===//
// ObjC Decl Allocation/Deallocation Method Implementations
//===----------------------------------------------------------------------===//
ObjCMethodDecl *ObjCMethodDecl::Create(ASTContext &C,
SourceLocation beginLoc,
SourceLocation endLoc,
Selector SelInfo, QualType T,
Decl *contextDecl,
AttributeList *M, bool isInstance,
bool isVariadic,
ImplementationControl impControl) {
void *Mem = C.getAllocator().Allocate<ObjCMethodDecl>();
return new (Mem) ObjCMethodDecl(beginLoc, endLoc,
SelInfo, T, contextDecl,
M, isInstance,
isVariadic, impControl);
}
ObjCInterfaceDecl *ObjCInterfaceDecl::Create(ASTContext &C,
SourceLocation atLoc,
unsigned numRefProtos,
IdentifierInfo *Id,
bool ForwardDecl, bool isInternal){
void *Mem = C.getAllocator().Allocate<ObjCInterfaceDecl>();
return new (Mem) ObjCInterfaceDecl(atLoc, numRefProtos,
Id, ForwardDecl,
isInternal);
}
ObjCIvarDecl *ObjCIvarDecl::Create(ASTContext &C, SourceLocation L,
IdentifierInfo *Id, QualType T) {
void *Mem = C.getAllocator().Allocate<ObjCIvarDecl>();
return new (Mem) ObjCIvarDecl(L, Id, T);
}
ObjCProtocolDecl *ObjCProtocolDecl::Create(ASTContext &C,
SourceLocation L,
unsigned numRefProtos,
IdentifierInfo *Id) {
void *Mem = C.getAllocator().Allocate<ObjCProtocolDecl>();
return new (Mem) ObjCProtocolDecl(L, numRefProtos, Id);
}
ObjCClassDecl *ObjCClassDecl::Create(ASTContext &C,
SourceLocation L,
ObjCInterfaceDecl **Elts, unsigned nElts) {
void *Mem = C.getAllocator().Allocate<ObjCClassDecl>();
return new (Mem) ObjCClassDecl(L, Elts, nElts);
}
ObjCForwardProtocolDecl *
ObjCForwardProtocolDecl::Create(ASTContext &C,
SourceLocation L,
ObjCProtocolDecl **Elts, unsigned NumElts) {
void *Mem = C.getAllocator().Allocate<ObjCForwardProtocolDecl>();
return new (Mem) ObjCForwardProtocolDecl(L, Elts, NumElts);
}
ObjCCategoryDecl *ObjCCategoryDecl::Create(ASTContext &C,
SourceLocation L,
IdentifierInfo *Id) {
void *Mem = C.getAllocator().Allocate<ObjCCategoryDecl>();
return new (Mem) ObjCCategoryDecl(L, Id);
}
ObjCCategoryImplDecl *
ObjCCategoryImplDecl::Create(ASTContext &C,
SourceLocation L,IdentifierInfo *Id,
ObjCInterfaceDecl *ClassInterface) {
void *Mem = C.getAllocator().Allocate<ObjCCategoryImplDecl>();
return new (Mem) ObjCCategoryImplDecl(L, Id, ClassInterface);
}
ObjCImplementationDecl *
ObjCImplementationDecl::Create(ASTContext &C,
SourceLocation L,
IdentifierInfo *Id,
ObjCInterfaceDecl *ClassInterface,
ObjCInterfaceDecl *SuperDecl) {
void *Mem = C.getAllocator().Allocate<ObjCImplementationDecl>();
return new (Mem) ObjCImplementationDecl(L, Id, ClassInterface, SuperDecl);
}
ObjCCompatibleAliasDecl *
ObjCCompatibleAliasDecl::Create(ASTContext &C,
SourceLocation L,
IdentifierInfo *Id,
ObjCInterfaceDecl* AliasedClass) {
void *Mem = C.getAllocator().Allocate<ObjCCompatibleAliasDecl>();
return new (Mem) ObjCCompatibleAliasDecl(L, Id, AliasedClass);
}
ObjCPropertyDecl *ObjCPropertyDecl::Create(ASTContext &C,
SourceLocation L) {
void *Mem = C.getAllocator().Allocate<ObjCPropertyDecl>();
return new (Mem) ObjCPropertyDecl(L);
}
//===----------------------------------------------------------------------===//
// Objective-C Decl Implementation
//===----------------------------------------------------------------------===//
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
/// ObjCInterfaceDecl's InsMethods and ClsMethods fields.
///
void ObjCInterfaceDecl::addProperties(ObjCPropertyDecl **Properties,
unsigned NumProperties) {
if (NumProperties == 0) return;
NumPropertyDecl = NumProperties;
PropertyDecl = new ObjCPropertyDecl*[NumProperties];
memcpy(PropertyDecl, Properties, NumProperties*sizeof(ObjCPropertyDecl*));
}
/// 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;
}
void ObjCCategoryDecl::setReferencedProtocolList(ObjCProtocolDecl **List,
unsigned NumRPs) {
assert(NumReferencedProtocols == 0 && "Protocol list already set");
if (NumRPs == 0) return;
ReferencedProtocols = new ObjCProtocolDecl*[NumRPs];
memcpy(ReferencedProtocols, List, NumRPs*sizeof(ObjCProtocolDecl*));
NumReferencedProtocols = NumRPs;
}
/// 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) {
for (ivar_iterator I = ClassDecl->ivar_begin(), E = ClassDecl->ivar_end();
I != E; ++I) {
if ((*I)->getIdentifier() == ID) {
clsDeclared = ClassDecl;
return *I;
}
}
ClassDecl = ClassDecl->getSuperClass();
}
return NULL;
}
/// lookupInstanceMethod - This method returns an instance method by looking in
/// the class, its categories, and its super classes (using a linear search).
ObjCMethodDecl *ObjCInterfaceDecl::lookupInstanceMethod(Selector Sel) {
ObjCInterfaceDecl* ClassDecl = this;
ObjCMethodDecl *MethodDecl = 0;
while (ClassDecl != NULL) {
if ((MethodDecl = ClassDecl->getInstanceMethod(Sel)))
return MethodDecl;
// Didn't find one yet - look through protocols.
ObjCProtocolDecl **protocols = ClassDecl->getReferencedProtocols();
int numProtocols = ClassDecl->getNumIntfRefProtocols();
for (int pIdx = 0; pIdx < numProtocols; pIdx++) {
if ((MethodDecl = protocols[pIdx]->getInstanceMethod(Sel)))
return MethodDecl;
}
// Didn't find one yet - now look through categories.
ObjCCategoryDecl *CatDecl = ClassDecl->getCategoryList();
while (CatDecl) {
if ((MethodDecl = CatDecl->getInstanceMethod(Sel)))
return MethodDecl;
CatDecl = CatDecl->getNextClassCategory();
}
ClassDecl = ClassDecl->getSuperClass();
}
return NULL;
}
// lookupClassMethod - This method returns a class method by looking in the
// class, its categories, and its super classes (using a linear search).
ObjCMethodDecl *ObjCInterfaceDecl::lookupClassMethod(Selector Sel) {
ObjCInterfaceDecl* ClassDecl = this;
ObjCMethodDecl *MethodDecl = 0;
while (ClassDecl != NULL) {
if ((MethodDecl = ClassDecl->getClassMethod(Sel)))
return MethodDecl;
// Didn't find one yet - look through protocols.
ObjCProtocolDecl **protocols = ClassDecl->getReferencedProtocols();
int numProtocols = ClassDecl->getNumIntfRefProtocols();
for (int pIdx = 0; pIdx < numProtocols; pIdx++) {
if ((MethodDecl = protocols[pIdx]->getClassMethod(Sel)))
return MethodDecl;
}
// Didn't find one yet - now look through categories.
ObjCCategoryDecl *CatDecl = ClassDecl->getCategoryList();
while (CatDecl) {
if ((MethodDecl = CatDecl->getClassMethod(Sel)))
return MethodDecl;
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::getInstanceMethod(Selector Sel) {
for (instmeth_iterator I = instmeth_begin(), E = instmeth_end(); I != E; ++I)
if ((*I)->getSelector() == Sel)
return *I;
return NULL;
}
/// lookupClassMethod - This method returns a class method by looking in
/// the class implementation. Unlike interfaces, we don't look outside the
/// implementation.
ObjCMethodDecl *ObjCImplementationDecl::getClassMethod(Selector Sel) {
for (classmeth_iterator I = classmeth_begin(), E = classmeth_end();
I != E; ++I)
if ((*I)->getSelector() == Sel)
return *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::getInstanceMethod(Selector Sel) {
for (instmeth_iterator I = instmeth_begin(), E = instmeth_end(); I != E; ++I)
if ((*I)->getSelector() == Sel)
return *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::getClassMethod(Selector Sel) {
for (classmeth_iterator I = classmeth_begin(), E = classmeth_end();
I != E; ++I)
if ((*I)->getSelector() == Sel)
return *I;
return NULL;
}
// lookupInstanceMethod - Lookup a instance method in the protocol and protocols
// it inherited.
ObjCMethodDecl *ObjCProtocolDecl::lookupInstanceMethod(Selector Sel) {
ObjCMethodDecl *MethodDecl = NULL;
if ((MethodDecl = getInstanceMethod(Sel)))
return MethodDecl;
if (getNumReferencedProtocols() > 0) {
ObjCProtocolDecl **RefPDecl = getReferencedProtocols();
for (unsigned i = 0; i < getNumReferencedProtocols(); i++) {
if ((MethodDecl = RefPDecl[i]->getInstanceMethod(Sel)))
return MethodDecl;
}
}
return NULL;
}
// lookupInstanceMethod - Lookup a class method in the protocol and protocols
// it inherited.
ObjCMethodDecl *ObjCProtocolDecl::lookupClassMethod(Selector Sel) {
ObjCMethodDecl *MethodDecl = NULL;
if ((MethodDecl = getClassMethod(Sel)))
return MethodDecl;
if (getNumReferencedProtocols() > 0) {
ObjCProtocolDecl **RefPDecl = getReferencedProtocols();
for(unsigned i = 0; i < getNumReferencedProtocols(); i++) {
if ((MethodDecl = RefPDecl[i]->getClassMethod(Sel)))
return MethodDecl;
}
}
return NULL;
}
/// getSynthesizedMethodSize - Compute size of synthesized method name
/// as done be the rewrite.
///
unsigned ObjCMethodDecl::getSynthesizedMethodSize() const {
// syntesized method name is a concatenation of -/+[class-name selector]
// Get length of this name.
unsigned length = 3; // _I_ or _C_
length += strlen(getClassInterface()->getName()) +1; // extra for _
NamedDecl *MethodContext = getMethodContext();
if (ObjCCategoryImplDecl *CID =
dyn_cast<ObjCCategoryImplDecl>(MethodContext))
length += strlen(CID->getName()) +1;
length += getSelector().getName().size(); // selector name
return length;
}
ObjCInterfaceDecl *ObjCMethodDecl::getClassInterface() {
if (ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(MethodContext))
return ID;
if (ObjCCategoryDecl *CD = dyn_cast<ObjCCategoryDecl>(MethodContext))
return CD->getClassInterface();
if (ObjCImplementationDecl *IMD =
dyn_cast<ObjCImplementationDecl>(MethodContext))
return IMD->getClassInterface();
if (ObjCCategoryImplDecl *CID = dyn_cast<ObjCCategoryImplDecl>(MethodContext))
return CID->getClassInterface();
assert(false && "unknown method context");
return 0;
}
void ObjCPropertyDecl::setPropertyDeclLists(ObjCIvarDecl **Properties,
unsigned NumProp) {
assert(PropertyDecls == 0 && "Properties already set");
if (NumProp == 0) return;
NumPropertyDecls = NumProp;
PropertyDecls = new ObjCIvarDecl*[NumProp];
memcpy(PropertyDecls, Properties, NumProp*sizeof(ObjCIvarDecl*));
}