1 //===--- StmtIterator.cpp - Iterators for Statements ------------------------===//
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 defines internal methods for StmtIterator.
12 //===----------------------------------------------------------------------===//
14 #include "clang/AST/StmtIterator.h"
15 #include "clang/AST/Decl.h"
17 using namespace clang;
19 // FIXME: Add support for dependent-sized array types in C++?
20 // Does it even make sense to build a CFG for an uninstantiated template?
21 static inline const VariableArrayType *FindVA(const Type* t) {
22 while (const ArrayType *vt = dyn_cast<ArrayType>(t)) {
23 if (const VariableArrayType *vat = dyn_cast<VariableArrayType>(vt))
24 if (vat->getSizeExpr())
27 t = vt->getElementType().getTypePtr();
33 void StmtIteratorBase::NextVA() {
36 const VariableArrayType *p = getVAPtr();
37 p = FindVA(p->getElementType().getTypePtr());
44 if (VarDecl* VD = dyn_cast<VarDecl>(*DGI))
51 assert(inSizeOfTypeVA());
56 void StmtIteratorBase::NextDecl(bool ImmediateAdvance) {
57 assert(getVAPtr() == nullptr);
58 assert(inDeclGroup());
63 for ( ; DGI != DGE; ++DGI)
70 bool StmtIteratorBase::HandleDecl(Decl* D) {
71 if (VarDecl* VD = dyn_cast<VarDecl>(D)) {
72 if (const VariableArrayType* VAPtr = FindVA(VD->getType().getTypePtr())) {
80 else if (TypedefNameDecl* TD = dyn_cast<TypedefNameDecl>(D)) {
81 if (const VariableArrayType* VAPtr =
82 FindVA(TD->getUnderlyingType().getTypePtr())) {
87 else if (EnumConstantDecl* ECD = dyn_cast<EnumConstantDecl>(D)) {
88 if (ECD->getInitExpr())
95 StmtIteratorBase::StmtIteratorBase(Decl** dgi, Decl** dge)
96 : DGI(dgi), RawVAPtr(DeclGroupMode), DGE(dge) {
100 StmtIteratorBase::StmtIteratorBase(const VariableArrayType* t)
101 : DGI(nullptr), RawVAPtr(SizeOfTypeVAMode) {
102 RawVAPtr |= reinterpret_cast<uintptr_t>(t);
105 Stmt*& StmtIteratorBase::GetDeclExpr() const {
106 if (const VariableArrayType* VAPtr = getVAPtr()) {
107 assert (VAPtr->SizeExpr);
108 return const_cast<Stmt*&>(VAPtr->SizeExpr);
111 assert (inDeclGroup());
112 VarDecl* VD = cast<VarDecl>(*DGI);
113 return *VD->getInitAddress();