tor-browser

The Tor Browser
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AbstractScopePtr.cpp (1750B)

      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