зеркало из https://github.com/microsoft/clang-1.git
117 строки
2.7 KiB
C++
117 строки
2.7 KiB
C++
//===--- StmtIterator.cpp - Iterators for Statements ------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines internal methods for StmtIterator.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/AST/StmtIterator.h"
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#include "clang/AST/Decl.h"
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using namespace clang;
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static inline VariableArrayType* FindVA(Type* t) {
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while (ArrayType* vt = dyn_cast<ArrayType>(t)) {
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if (VariableArrayType* vat = dyn_cast<VariableArrayType>(vt))
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if (vat->getSizeExpr())
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return vat;
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t = vt->getElementType().getTypePtr();
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}
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return NULL;
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}
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void StmtIteratorBase::NextVA() {
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assert (getVAPtr());
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VariableArrayType* p = getVAPtr();
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p = FindVA(p->getElementType().getTypePtr());
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setVAPtr(p);
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if (!p && inDecl()) {
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if (VarDecl* VD = dyn_cast<VarDecl>(decl))
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if (VD->Init)
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return;
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NextDecl();
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} else if (inSizeOfTypeVA()) {
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assert(!decl);
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RawVAPtr = 0;
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}
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}
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void StmtIteratorBase::NextDecl(bool ImmediateAdvance) {
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assert (inDecl());
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assert (getVAPtr() == NULL);
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assert (decl);
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if (ImmediateAdvance) {
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decl = decl->getNextDeclarator();
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if (!decl) {
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RawVAPtr = 0;
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return;
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}
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}
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for ( ; decl ; decl = decl->getNextDeclarator()) {
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if (VarDecl* VD = dyn_cast<VarDecl>(decl)) {
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if (VariableArrayType* VAPtr = FindVA(VD->getType().getTypePtr())) {
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setVAPtr(VAPtr);
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return;
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}
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if (VD->getInit())
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return;
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}
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else if (TypedefDecl* TD = dyn_cast<TypedefDecl>(decl)) {
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if (VariableArrayType* VAPtr =
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FindVA(TD->getUnderlyingType().getTypePtr())) {
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setVAPtr(VAPtr);
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return;
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}
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}
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else if (EnumConstantDecl* ECD = dyn_cast<EnumConstantDecl>(decl))
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if (ECD->getInitExpr())
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return;
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}
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if (!decl) {
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RawVAPtr = 0;
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return;
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}
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}
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StmtIteratorBase::StmtIteratorBase(ScopedDecl* d)
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: decl(d), RawVAPtr(DeclMode) {
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assert (decl);
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NextDecl(false);
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}
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StmtIteratorBase::StmtIteratorBase(VariableArrayType* t)
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: decl(NULL), RawVAPtr(SizeOfTypeVAMode) {
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RawVAPtr |= reinterpret_cast<uintptr_t>(t);
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}
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Stmt*& StmtIteratorBase::GetDeclExpr() const {
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if (VariableArrayType* VAPtr = getVAPtr()) {
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assert (VAPtr->SizeExpr);
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return VAPtr->SizeExpr;
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}
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if (VarDecl* VD = dyn_cast<VarDecl>(decl)) {
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assert (VD->Init);
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return VD->Init;
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}
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EnumConstantDecl* ECD = cast<EnumConstantDecl>(decl);
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return ECD->Init;
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}
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