Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1 | // Copyright 2015 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #ifndef V8_CONTEXTS_INL_H_ |
| 6 | #define V8_CONTEXTS_INL_H_ |
| 7 | |
| 8 | #include "src/contexts.h" |
| 9 | #include "src/objects-inl.h" |
| 10 | |
| 11 | namespace v8 { |
| 12 | namespace internal { |
| 13 | |
| 14 | |
| 15 | // static |
| 16 | ScriptContextTable* ScriptContextTable::cast(Object* context) { |
| 17 | DCHECK(context->IsScriptContextTable()); |
| 18 | return reinterpret_cast<ScriptContextTable*>(context); |
| 19 | } |
| 20 | |
| 21 | |
| 22 | int ScriptContextTable::used() const { |
| 23 | return Smi::cast(get(kUsedSlot))->value(); |
| 24 | } |
| 25 | |
| 26 | |
| 27 | void ScriptContextTable::set_used(int used) { |
| 28 | set(kUsedSlot, Smi::FromInt(used)); |
| 29 | } |
| 30 | |
| 31 | |
| 32 | // static |
| 33 | Handle<Context> ScriptContextTable::GetContext(Handle<ScriptContextTable> table, |
| 34 | int i) { |
| 35 | DCHECK(i < table->used()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 36 | return Handle<Context>::cast( |
| 37 | FixedArray::get(*table, i + kFirstContextSlot, table->GetIsolate())); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 38 | } |
| 39 | |
| 40 | |
| 41 | // static |
| 42 | Context* Context::cast(Object* context) { |
| 43 | DCHECK(context->IsContext()); |
| 44 | return reinterpret_cast<Context*>(context); |
| 45 | } |
| 46 | |
| 47 | |
| 48 | JSFunction* Context::closure() { return JSFunction::cast(get(CLOSURE_INDEX)); } |
| 49 | void Context::set_closure(JSFunction* closure) { set(CLOSURE_INDEX, closure); } |
| 50 | |
| 51 | |
| 52 | Context* Context::previous() { |
| 53 | Object* result = get(PREVIOUS_INDEX); |
| 54 | DCHECK(IsBootstrappingOrValidParentContext(result, this)); |
| 55 | return reinterpret_cast<Context*>(result); |
| 56 | } |
| 57 | void Context::set_previous(Context* context) { set(PREVIOUS_INDEX, context); } |
| 58 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 59 | Object* Context::next_context_link() { return get(Context::NEXT_CONTEXT_LINK); } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 60 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 61 | bool Context::has_extension() { return !extension()->IsTheHole(GetIsolate()); } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 62 | HeapObject* Context::extension() { |
| 63 | return HeapObject::cast(get(EXTENSION_INDEX)); |
| 64 | } |
| 65 | void Context::set_extension(HeapObject* object) { |
| 66 | set(EXTENSION_INDEX, object); |
| 67 | } |
| 68 | |
| 69 | |
| 70 | JSModule* Context::module() { return JSModule::cast(get(EXTENSION_INDEX)); } |
| 71 | void Context::set_module(JSModule* module) { set(EXTENSION_INDEX, module); } |
| 72 | |
| 73 | |
| 74 | Context* Context::native_context() { |
| 75 | Object* result = get(NATIVE_CONTEXT_INDEX); |
| 76 | DCHECK(IsBootstrappingOrNativeContext(this->GetIsolate(), result)); |
| 77 | return reinterpret_cast<Context*>(result); |
| 78 | } |
| 79 | |
| 80 | |
| 81 | void Context::set_native_context(Context* context) { |
| 82 | set(NATIVE_CONTEXT_INDEX, context); |
| 83 | } |
| 84 | |
| 85 | |
| 86 | bool Context::IsNativeContext() { |
| 87 | Map* map = this->map(); |
| 88 | return map == map->GetHeap()->native_context_map(); |
| 89 | } |
| 90 | |
| 91 | |
| 92 | bool Context::IsFunctionContext() { |
| 93 | Map* map = this->map(); |
| 94 | return map == map->GetHeap()->function_context_map(); |
| 95 | } |
| 96 | |
| 97 | |
| 98 | bool Context::IsCatchContext() { |
| 99 | Map* map = this->map(); |
| 100 | return map == map->GetHeap()->catch_context_map(); |
| 101 | } |
| 102 | |
| 103 | |
| 104 | bool Context::IsWithContext() { |
| 105 | Map* map = this->map(); |
| 106 | return map == map->GetHeap()->with_context_map(); |
| 107 | } |
| 108 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 109 | bool Context::IsDebugEvaluateContext() { |
| 110 | Map* map = this->map(); |
| 111 | return map == map->GetHeap()->debug_evaluate_context_map(); |
| 112 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 113 | |
| 114 | bool Context::IsBlockContext() { |
| 115 | Map* map = this->map(); |
| 116 | return map == map->GetHeap()->block_context_map(); |
| 117 | } |
| 118 | |
| 119 | |
| 120 | bool Context::IsModuleContext() { |
| 121 | Map* map = this->map(); |
| 122 | return map == map->GetHeap()->module_context_map(); |
| 123 | } |
| 124 | |
| 125 | |
| 126 | bool Context::IsScriptContext() { |
| 127 | Map* map = this->map(); |
| 128 | return map == map->GetHeap()->script_context_map(); |
| 129 | } |
| 130 | |
| 131 | |
| 132 | bool Context::HasSameSecurityTokenAs(Context* that) { |
| 133 | return this->native_context()->security_token() == |
| 134 | that->native_context()->security_token(); |
| 135 | } |
| 136 | |
| 137 | |
| 138 | #define NATIVE_CONTEXT_FIELD_ACCESSORS(index, type, name) \ |
| 139 | void Context::set_##name(type* value) { \ |
| 140 | DCHECK(IsNativeContext()); \ |
| 141 | set(index, value); \ |
| 142 | } \ |
| 143 | bool Context::is_##name(type* value) { \ |
| 144 | DCHECK(IsNativeContext()); \ |
| 145 | return type::cast(get(index)) == value; \ |
| 146 | } \ |
| 147 | type* Context::name() { \ |
| 148 | DCHECK(IsNativeContext()); \ |
| 149 | return type::cast(get(index)); \ |
| 150 | } |
| 151 | NATIVE_CONTEXT_FIELDS(NATIVE_CONTEXT_FIELD_ACCESSORS) |
| 152 | #undef NATIVE_CONTEXT_FIELD_ACCESSORS |
| 153 | |
| 154 | |
| 155 | } // namespace internal |
| 156 | } // namespace v8 |
| 157 | |
| 158 | #endif // V8_CONTEXTS_INL_H_ |