js/src/frontend/AbstractScopePtr.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  * vim: set ts=8 sts=2 et sw=2 tw=80:
   3  * This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "frontend/AbstractScopePtr.h"
   8
   9 #include "mozilla/Assertions.h"
  10
  11 #include "frontend/CompilationStencil.h"  // CompilationState
  12 #include "frontend/Stencil.h"
  13 #include "js/Vector.h"
  14 #include "vm/Scope.h"  // for FunctionScope
  15
  16 using namespace js;
  17 using namespace js::frontend;
  18
  19 ScopeStencil& AbstractScopePtr::scopeData() const {
  20   MOZ_ASSERT(isScopeStencil());
  21   return compilationState_.scopeData[index_];
  22 }
  23
  24 ScopeKind AbstractScopePtr::kind() const {
  25   if (isScopeStencil()) {
  26     return scopeData().kind();
  27   }
  28   return compilationState_.scopeContext.enclosingScopeKind;
  29 }
  30
  31 AbstractScopePtr AbstractScopePtr::enclosing() const {
  32   MOZ_ASSERT(isScopeStencil());
  33   return scopeData().enclosing(compilationState_);
  34 }
  35
  36 bool AbstractScopePtr::hasEnvironment() const {
  37   if (isScopeStencil()) {
  38     return scopeData().hasEnvironment();
  39   }
  40   return compilationState_.scopeContext.enclosingScopeHasEnvironment;
  41 }
  42
  43 bool AbstractScopePtr::isArrow() const {
  44   MOZ_ASSERT(is<FunctionScope>());
  45   if (isScopeStencil()) {
  46     return scopeData().isArrow();
  47   }
  48   return compilationState_.scopeContext.enclosingScopeIsArrow;
  49 }
  50
  51 #ifdef DEBUG
  52 bool AbstractScopePtr::hasNonSyntacticScopeOnChain() const {
  53   if (isScopeStencil()) {
  54     if (kind() == ScopeKind::NonSyntactic) {
  55       return true;
  56     }
  57     return enclosing().hasNonSyntacticScopeOnChain();
  58   }
  59   return compilationState_.scopeContext.hasNonSyntacticScopeOnChain;
  60 }
  61 #endif