71 lines
2.1 KiB
C++
71 lines
2.1 KiB
C++
//===- Scope.cpp - Lexical scope information --------------------*- C++ -*-===//
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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 implements the Scope class, which is used for recording
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// information about a lexical scope.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Sema/Scope.h"
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using namespace clang;
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void Scope::Init(Scope *parent, unsigned flags) {
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AnyParent = parent;
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Flags = flags;
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if (parent && !(flags & FnScope)) {
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BreakParent = parent->BreakParent;
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ContinueParent = parent->ContinueParent;
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} else {
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// Control scopes do not contain the contents of nested function scopes for
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// control flow purposes.
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BreakParent = ContinueParent = 0;
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}
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if (parent) {
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Depth = parent->Depth + 1;
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PrototypeDepth = parent->PrototypeDepth;
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PrototypeIndex = 0;
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FnParent = parent->FnParent;
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BlockParent = parent->BlockParent;
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TemplateParamParent = parent->TemplateParamParent;
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} else {
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Depth = 0;
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PrototypeDepth = 0;
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PrototypeIndex = 0;
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FnParent = BlockParent = 0;
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TemplateParamParent = 0;
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}
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// If this scope is a function or contains breaks/continues, remember it.
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if (flags & FnScope) FnParent = this;
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if (flags & BreakScope) BreakParent = this;
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if (flags & ContinueScope) ContinueParent = this;
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if (flags & BlockScope) BlockParent = this;
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if (flags & TemplateParamScope) TemplateParamParent = this;
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// If this is a prototype scope, record that.
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if (flags & FunctionPrototypeScope) PrototypeDepth++;
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DeclsInScope.clear();
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UsingDirectives.clear();
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Entity = 0;
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ErrorTrap.reset();
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}
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bool Scope::containedInPrototypeScope() const {
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const Scope *S = this;
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while (S) {
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if (S->isFunctionPrototypeScope())
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return true;
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S = S->getParent();
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}
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return false;
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}
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