1 //===- Scope.cpp - Lexical scope information --------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file implements the Scope class, which is used for recording 11 // information about a lexical scope. 12 // 13 //===----------------------------------------------------------------------===// 14 15 #include "clang/Sema/Scope.h" 16 17 using namespace clang; 18 19 void Scope::Init(Scope *parent, unsigned flags) { 20 AnyParent = parent; 21 Flags = flags; 22 23 if (parent) { 24 Depth = parent->Depth + 1; 25 PrototypeDepth = parent->PrototypeDepth; 26 PrototypeIndex = 0; 27 FnParent = parent->FnParent; 28 BreakParent = parent->BreakParent; 29 ContinueParent = parent->ContinueParent; 30 ControlParent = parent->ControlParent; 31 BlockParent = parent->BlockParent; 32 TemplateParamParent = parent->TemplateParamParent; 33 } else { 34 Depth = 0; 35 PrototypeDepth = 0; 36 PrototypeIndex = 0; 37 FnParent = BreakParent = ContinueParent = BlockParent = 0; 38 ControlParent = 0; 39 TemplateParamParent = 0; 40 } 41 42 // If this scope is a function or contains breaks/continues, remember it. 43 if (flags & FnScope) FnParent = this; 44 if (flags & BreakScope) BreakParent = this; 45 if (flags & ContinueScope) ContinueParent = this; 46 if (flags & ControlScope) ControlParent = this; 47 if (flags & BlockScope) BlockParent = this; 48 if (flags & TemplateParamScope) TemplateParamParent = this; 49 50 // If this is a prototype scope, record that. 51 if (flags & FunctionPrototypeScope) PrototypeDepth++; 52 53 DeclsInScope.clear(); 54 UsingDirectives.clear(); 55 Entity = 0; 56 ErrorTrap.reset(); 57 } 58
