Index: src/scopeinfo.h |
diff --git a/src/scopeinfo.h b/src/scopeinfo.h |
deleted file mode 100644 |
index 2afc667c30e7023aac9fa7254af59817a42e1c14..0000000000000000000000000000000000000000 |
--- a/src/scopeinfo.h |
+++ /dev/null |
@@ -1,175 +0,0 @@ |
-// Copyright 2011 the V8 project authors. All rights reserved. |
-// Use of this source code is governed by a BSD-style license that can be |
-// found in the LICENSE file. |
- |
-#ifndef V8_SCOPEINFO_H_ |
-#define V8_SCOPEINFO_H_ |
- |
-#include "src/allocation.h" |
-#include "src/modules.h" |
-#include "src/variables.h" |
- |
-namespace v8 { |
-namespace internal { |
- |
-// Cache for mapping (data, property name) into context slot index. |
-// The cache contains both positive and negative results. |
-// Slot index equals -1 means the property is absent. |
-// Cleared at startup and prior to mark sweep collection. |
-class ContextSlotCache { |
- public: |
- // Lookup context slot index for (data, name). |
- // If absent, kNotFound is returned. |
- int Lookup(Object* data, String* name, VariableMode* mode, |
- InitializationFlag* init_flag, |
- MaybeAssignedFlag* maybe_assigned_flag); |
- |
- // Update an element in the cache. |
- void Update(Handle<Object> data, Handle<String> name, VariableMode mode, |
- InitializationFlag init_flag, |
- MaybeAssignedFlag maybe_assigned_flag, int slot_index); |
- |
- // Clear the cache. |
- void Clear(); |
- |
- static const int kNotFound = -2; |
- |
- private: |
- ContextSlotCache() { |
- for (int i = 0; i < kLength; ++i) { |
- keys_[i].data = NULL; |
- keys_[i].name = NULL; |
- values_[i] = kNotFound; |
- } |
- } |
- |
- inline static int Hash(Object* data, String* name); |
- |
-#ifdef DEBUG |
- void ValidateEntry(Handle<Object> data, Handle<String> name, |
- VariableMode mode, InitializationFlag init_flag, |
- MaybeAssignedFlag maybe_assigned_flag, int slot_index); |
-#endif |
- |
- static const int kLength = 256; |
- struct Key { |
- Object* data; |
- String* name; |
- }; |
- |
- struct Value { |
- Value(VariableMode mode, InitializationFlag init_flag, |
- MaybeAssignedFlag maybe_assigned_flag, int index) { |
- DCHECK(ModeField::is_valid(mode)); |
- DCHECK(InitField::is_valid(init_flag)); |
- DCHECK(MaybeAssignedField::is_valid(maybe_assigned_flag)); |
- DCHECK(IndexField::is_valid(index)); |
- value_ = ModeField::encode(mode) | IndexField::encode(index) | |
- InitField::encode(init_flag) | |
- MaybeAssignedField::encode(maybe_assigned_flag); |
- DCHECK(mode == this->mode()); |
- DCHECK(init_flag == this->initialization_flag()); |
- DCHECK(maybe_assigned_flag == this->maybe_assigned_flag()); |
- DCHECK(index == this->index()); |
- } |
- |
- explicit inline Value(uint32_t value) : value_(value) {} |
- |
- uint32_t raw() { return value_; } |
- |
- VariableMode mode() { return ModeField::decode(value_); } |
- |
- InitializationFlag initialization_flag() { |
- return InitField::decode(value_); |
- } |
- |
- MaybeAssignedFlag maybe_assigned_flag() { |
- return MaybeAssignedField::decode(value_); |
- } |
- |
- int index() { return IndexField::decode(value_); } |
- |
- // Bit fields in value_ (type, shift, size). Must be public so the |
- // constants can be embedded in generated code. |
- class ModeField : public BitField<VariableMode, 0, 4> {}; |
- class InitField : public BitField<InitializationFlag, 4, 1> {}; |
- class MaybeAssignedField : public BitField<MaybeAssignedFlag, 5, 1> {}; |
- class IndexField : public BitField<int, 6, 32 - 6> {}; |
- |
- private: |
- uint32_t value_; |
- }; |
- |
- Key keys_[kLength]; |
- uint32_t values_[kLength]; |
- |
- friend class Isolate; |
- DISALLOW_COPY_AND_ASSIGN(ContextSlotCache); |
-}; |
- |
- |
- |
- |
-//--------------------------------------------------------------------------- |
-// Auxiliary class used for the description of module instances. |
-// Used by Runtime_DeclareModules. |
- |
-class ModuleInfo: public FixedArray { |
- public: |
- static ModuleInfo* cast(Object* description) { |
- return static_cast<ModuleInfo*>(FixedArray::cast(description)); |
- } |
- |
- static Handle<ModuleInfo> Create(Isolate* isolate, |
- ModuleDescriptor* descriptor, Scope* scope); |
- |
- // Index of module's context in host context. |
- int host_index() { return Smi::cast(get(HOST_OFFSET))->value(); } |
- |
- // Name, mode, and index of the i-th export, respectively. |
- // For value exports, the index is the slot of the value in the module |
- // context, for exported modules it is the slot index of the |
- // referred module's context in the host context. |
- // TODO(rossberg): This format cannot yet handle exports of modules declared |
- // in earlier scripts. |
- String* name(int i) { return String::cast(get(name_offset(i))); } |
- VariableMode mode(int i) { |
- return static_cast<VariableMode>(Smi::cast(get(mode_offset(i)))->value()); |
- } |
- int index(int i) { return Smi::cast(get(index_offset(i)))->value(); } |
- |
- int length() { return (FixedArray::length() - HEADER_SIZE) / ITEM_SIZE; } |
- |
- private: |
- // The internal format is: Index, (Name, VariableMode, Index)* |
- enum { |
- HOST_OFFSET, |
- NAME_OFFSET, |
- MODE_OFFSET, |
- INDEX_OFFSET, |
- HEADER_SIZE = NAME_OFFSET, |
- ITEM_SIZE = INDEX_OFFSET - NAME_OFFSET + 1 |
- }; |
- inline int name_offset(int i) { return NAME_OFFSET + i * ITEM_SIZE; } |
- inline int mode_offset(int i) { return MODE_OFFSET + i * ITEM_SIZE; } |
- inline int index_offset(int i) { return INDEX_OFFSET + i * ITEM_SIZE; } |
- |
- static Handle<ModuleInfo> Allocate(Isolate* isolate, int length) { |
- return Handle<ModuleInfo>::cast( |
- isolate->factory()->NewFixedArray(HEADER_SIZE + ITEM_SIZE * length)); |
- } |
- void set_host_index(int index) { set(HOST_OFFSET, Smi::FromInt(index)); } |
- void set_name(int i, String* name) { set(name_offset(i), name); } |
- void set_mode(int i, VariableMode mode) { |
- set(mode_offset(i), Smi::FromInt(mode)); |
- } |
- void set_index(int i, int index) { |
- set(index_offset(i), Smi::FromInt(index)); |
- } |
-}; |
- |
- |
-} // namespace internal |
-} // namespace v8 |
- |
-#endif // V8_SCOPEINFO_H_ |