src/ast.h - Issue 335293004: New try: Parser: Delay internalizing strings and values

Unified Diff: src/ast.h

Issue 335293004: New try: Parser: Delay internalizing strings and values (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge

Patch Set: rebased (trivial) Created 6 years, 6 months ago

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Index: src/ast.h

diff --git a/src/ast.h b/src/ast.h

index d56b972d9a3640b17d313e71992b03aae936f3d6..23f9eef477a9a318769ad67256b650e23ca11372 100644

--- a/src/ast.h

+++ b/src/ast.h

@@ -8,6 +8,7 @@

#include "src/v8.h"

#include "src/assembler.h"

+#include "src/ast-value-factory.h"

#include "src/factory.h"

#include "src/feedback-slots.h"

#include "src/interface.h"

@@ -367,11 +368,14 @@ class Expression : public AstNode {

protected:

Expression(Zone* zone, int pos)

: AstNode(pos),

+ zone_(zone),

bounds_(Bounds::Unbounded(zone)),

id_(GetNextId(zone)),

test_id_(GetNextId(zone)) {}

void set_to_boolean_types(byte types) { to_boolean_types_ = types; }

+ Zone* zone_;

private:

Bounds bounds_;

byte to_boolean_types_;

@@ -390,7 +394,7 @@ class BreakableStatement : public Statement {

// The labels associated with this statement. May be NULL;

// if it is != NULL, guaranteed to contain at least one entry.

- ZoneStringList* labels() const { return labels_; }

+ ZoneList<const AstRawString*>* labels() const { return labels_; }

// Type testing & conversion.

virtual BreakableStatement* AsBreakableStatement() V8_FINAL V8_OVERRIDE {

@@ -410,7 +414,7 @@ class BreakableStatement : public Statement {

protected:

BreakableStatement(

- Zone* zone, ZoneStringList* labels,

+ Zone* zone, ZoneList<const AstRawString*>* labels,

BreakableType breakable_type, int position)

: Statement(zone, position),

labels_(labels),

@@ -422,7 +426,7 @@ class BreakableStatement : public Statement {

private:

- ZoneStringList* labels_;

+ ZoneList<const AstRawString*>* labels_;

BreakableType breakable_type_;

Label break_target_;

const BailoutId entry_id_;

@@ -453,7 +457,7 @@ class Block V8_FINAL : public BreakableStatement {

protected:

Block(Zone* zone,

- ZoneStringList* labels,

+ ZoneList<const AstRawString*>* labels,

int capacity,

bool is_initializer_block,

int pos)

@@ -662,18 +666,15 @@ class ModulePath V8_FINAL : public Module {

DECLARE_NODE_TYPE(ModulePath)

Module* module() const { return module_; }

- Handle<String> name() const { return name_; }

+ Handle<String> name() const { return name_->string(); }

protected:

- ModulePath(Zone* zone, Module* module, Handle<String> name, int pos)

- : Module(zone, pos),

- module_(module),

- name_(name) {

- }

+ ModulePath(Zone* zone, Module* module, const AstRawString* name, int pos)

+ : Module(zone, pos), module_(module), name_(name) {}

private:

Module* module_;

- Handle<String> name_;

+ const AstRawString* name_;

};

@@ -730,7 +731,7 @@ class IterationStatement : public BreakableStatement {

Label* continue_target() { return &continue_target_; }

protected:

- IterationStatement(Zone* zone, ZoneStringList* labels, int pos)

+ IterationStatement(Zone* zone, ZoneList<const AstRawString*>* labels, int pos)

: BreakableStatement(zone, labels, TARGET_FOR_ANONYMOUS, pos),

body_(NULL),

osr_entry_id_(GetNextId(zone)) {

@@ -764,7 +765,7 @@ class DoWhileStatement V8_FINAL : public IterationStatement {

BailoutId BackEdgeId() const { return back_edge_id_; }

protected:

- DoWhileStatement(Zone* zone, ZoneStringList* labels, int pos)

+ DoWhileStatement(Zone* zone, ZoneList<const AstRawString*>* labels, int pos)

: IterationStatement(zone, labels, pos),

cond_(NULL),

continue_id_(GetNextId(zone)),

@@ -801,7 +802,7 @@ class WhileStatement V8_FINAL : public IterationStatement {

BailoutId BodyId() const { return body_id_; }

protected:

- WhileStatement(Zone* zone, ZoneStringList* labels, int pos)

+ WhileStatement(Zone* zone, ZoneList<const AstRawString*>* labels, int pos)

: IterationStatement(zone, labels, pos),

cond_(NULL),

may_have_function_literal_(true),

@@ -852,7 +853,7 @@ class ForStatement V8_FINAL : public IterationStatement {

void set_loop_variable(Variable* var) { loop_variable_ = var; }

protected:

- ForStatement(Zone* zone, ZoneStringList* labels, int pos)

+ ForStatement(Zone* zone, ZoneList<const AstRawString*>* labels, int pos)

: IterationStatement(zone, labels, pos),

init_(NULL),

cond_(NULL),

@@ -894,11 +895,8 @@ class ForEachStatement : public IterationStatement {

Expression* subject() const { return subject_; }

protected:

- ForEachStatement(Zone* zone, ZoneStringList* labels, int pos)

- : IterationStatement(zone, labels, pos),

- each_(NULL),

- subject_(NULL) {

- }

+ ForEachStatement(Zone* zone, ZoneList<const AstRawString*>* labels, int pos)

+ : IterationStatement(zone, labels, pos), each_(NULL), subject_(NULL) {}

private:

Expression* each_;

@@ -934,7 +932,7 @@ class ForInStatement V8_FINAL : public ForEachStatement,

virtual BailoutId StackCheckId() const V8_OVERRIDE { return body_id_; }

protected:

- ForInStatement(Zone* zone, ZoneStringList* labels, int pos)

+ ForInStatement(Zone* zone, ZoneList<const AstRawString*>* labels, int pos)

: ForEachStatement(zone, labels, pos),

for_in_type_(SLOW_FOR_IN),

for_in_feedback_slot_(kInvalidFeedbackSlot),

@@ -1004,7 +1002,7 @@ class ForOfStatement V8_FINAL : public ForEachStatement {

BailoutId BackEdgeId() const { return back_edge_id_; }

protected:

- ForOfStatement(Zone* zone, ZoneStringList* labels, int pos)

+ ForOfStatement(Zone* zone, ZoneList<const AstRawString*>* labels, int pos)

: ForEachStatement(zone, labels, pos),

assign_iterator_(NULL),

next_result_(NULL),

@@ -1165,7 +1163,7 @@ class SwitchStatement V8_FINAL : public BreakableStatement {

ZoneList<CaseClause*>* cases() const { return cases_; }

protected:

- SwitchStatement(Zone* zone, ZoneStringList* labels, int pos)

+ SwitchStatement(Zone* zone, ZoneList<const AstRawString*>* labels, int pos)

: BreakableStatement(zone, labels, TARGET_FOR_ANONYMOUS, pos),

tag_(NULL),

cases_(NULL) { }

@@ -1345,26 +1343,28 @@ class Literal V8_FINAL : public Expression {

DECLARE_NODE_TYPE(Literal)

virtual bool IsPropertyName() const V8_OVERRIDE {

- if (value_->IsInternalizedString()) {

- uint32_t ignored;

- return !String::cast(*value_)->AsArrayIndex(&ignored);

- }

- return false;

+ return value_->IsPropertyName();

}

Handle<String> AsPropertyName() {

ASSERT(IsPropertyName());

- return Handle<String>::cast(value_);

+ return Handle<String>::cast(value());

+ }

+ const AstRawString* AsRawPropertyName() {

+ ASSERT(IsPropertyName());

+ return value_->AsString();

}

virtual bool ToBooleanIsTrue() const V8_OVERRIDE {

- return value_->BooleanValue();

+ return value()->BooleanValue();

}

virtual bool ToBooleanIsFalse() const V8_OVERRIDE {

- return !value_->BooleanValue();

+ return !value()->BooleanValue();

}

- Handle<Object> value() const { return value_; }

+ Handle<Object> value() const { return value_->value(); }

+ const AstValue* raw_value() const { return value_; }

// Support for using Literal as a HashMap key. NOTE: Currently, this works

// only for string and number literals!

@@ -1379,7 +1379,7 @@ class Literal V8_FINAL : public Expression {

TypeFeedbackId LiteralFeedbackId() const { return reuse(id()); }

protected:

- Literal(Zone* zone, Handle<Object> value, int position)

+ Literal(Zone* zone, const AstValue* value, int position)

: Expression(zone, position),

value_(value),

isolate_(zone->isolate()) { }

@@ -1387,7 +1387,7 @@ class Literal V8_FINAL : public Expression {

private:

Handle<String> ToString();

- Handle<Object> value_;

+ const AstValue* value_;

// TODO(dcarney): remove. this is only needed for Match and Hash.

Isolate* isolate_;

};

@@ -1458,7 +1458,8 @@ class ObjectLiteralProperty V8_FINAL : public ZoneObject {

PROTOTYPE // Property is __proto__.

};

- ObjectLiteralProperty(Zone* zone, Literal* key, Expression* value);

+ ObjectLiteralProperty(Zone* zone, AstValueFactory* ast_value_factory,

+ Literal* key, Expression* value);

Literal* key() { return key_; }

Expression* value() { return value_; }

@@ -1557,13 +1558,13 @@ class RegExpLiteral V8_FINAL : public MaterializedLiteral {

public:

DECLARE_NODE_TYPE(RegExpLiteral)

- Handle<String> pattern() const { return pattern_; }

- Handle<String> flags() const { return flags_; }

+ Handle<String> pattern() const { return pattern_->string(); }

+ Handle<String> flags() const { return flags_->string(); }

protected:

RegExpLiteral(Zone* zone,

- Handle<String> pattern,

- Handle<String> flags,

+ const AstRawString* pattern,

+ const AstRawString* flags,

int literal_index,

int pos)

: MaterializedLiteral(zone, literal_index, pos),

@@ -1573,8 +1574,8 @@ class RegExpLiteral V8_FINAL : public MaterializedLiteral {

}

private:

- Handle<String> pattern_;

- Handle<String> flags_;

+ const AstRawString* pattern_;

+ const AstRawString* flags_;

};

@@ -1625,15 +1626,12 @@ class VariableProxy V8_FINAL : public Expression {

return var_ == NULL ? true : var_->IsValidReference();

}

- bool IsVariable(Handle<String> n) const {

- return !is_this() && name().is_identical_to(n);

- }

bool IsArguments() const { return var_ != NULL && var_->is_arguments(); }

bool IsLValue() const { return is_lvalue_; }

- Handle<String> name() const { return name_; }

+ Handle<String> name() const { return name_->string(); }

+ const AstRawString* raw_name() const { return name_; }

Variable* var() const { return var_; }

bool is_this() const { return is_this_; }

Interface* interface() const { return interface_; }

@@ -1649,12 +1647,12 @@ class VariableProxy V8_FINAL : public Expression {

VariableProxy(Zone* zone, Variable* var, int position);

VariableProxy(Zone* zone,

- Handle<String> name,

+ const AstRawString* name,

bool is_this,

Interface* interface,

int position);

- Handle<String> name_;

+ const AstRawString* name_;

Variable* var_; // resolved variable, or NULL

bool is_this_;

bool is_trivial_;

@@ -1900,7 +1898,8 @@ class CallRuntime V8_FINAL : public Expression {

public:

DECLARE_NODE_TYPE(CallRuntime)

- Handle<String> name() const { return name_; }

+ Handle<String> name() const { return raw_name_->string(); }

+ const AstRawString* raw_name() const { return raw_name_; }

const Runtime::Function* function() const { return function_; }

ZoneList<Expression*>* arguments() const { return arguments_; }

bool is_jsruntime() const { return function_ == NULL; }

@@ -1909,17 +1908,17 @@ class CallRuntime V8_FINAL : public Expression {

protected:

CallRuntime(Zone* zone,

- Handle<String> name,

+ const AstRawString* name,

const Runtime::Function* function,

ZoneList<Expression*>* arguments,

int pos)

: Expression(zone, pos),

- name_(name),

+ raw_name_(name),

function_(function),

arguments_(arguments) { }

private:

- Handle<String> name_;

+ const AstRawString* raw_name_;

const Runtime::Function* function_;

ZoneList<Expression*>* arguments_;

};

@@ -2313,7 +2312,8 @@ class FunctionLiteral V8_FINAL : public Expression {

DECLARE_NODE_TYPE(FunctionLiteral)

- Handle<String> name() const { return name_; }

+ Handle<String> name() const { return raw_name_->string(); }

+ const AstRawString* raw_name() const { return raw_name_; }

Scope* scope() const { return scope_; }

ZoneList<Statement*>* body() const { return body_; }

void set_function_token_position(int pos) { function_token_position_ = pos; }

@@ -2336,13 +2336,37 @@ class FunctionLiteral V8_FINAL : public Expression {

void InitializeSharedInfo(Handle<Code> code);

Handle<String> debug_name() const {

- if (name_->length() > 0) return name_;

+ if (raw_name_ != NULL && !raw_name_->IsEmpty()) {

+ return raw_name_->string();

+ }

return inferred_name();

}

- Handle<String> inferred_name() const { return inferred_name_; }

+ Handle<String> inferred_name() const {

+ if (!inferred_name_.is_null()) {

+ ASSERT(raw_inferred_name_ == NULL);

+ return inferred_name_;

+ }

+ if (raw_inferred_name_ != NULL) {

+ return raw_inferred_name_->string();

+ }

+ UNREACHABLE();

+ return Handle<String>();

+ }

+ // Only one of {set_inferred_name, set_raw_inferred_name} should be called.

void set_inferred_name(Handle<String> inferred_name) {

+ ASSERT(!inferred_name.is_null());

inferred_name_ = inferred_name;

+ ASSERT(raw_inferred_name_== NULL || raw_inferred_name_->IsEmpty());

+ raw_inferred_name_ = NULL;

+ }

+ void set_raw_inferred_name(const AstString* raw_inferred_name) {

+ ASSERT(raw_inferred_name != NULL);

+ raw_inferred_name_ = raw_inferred_name;

+ ASSERT(inferred_name_.is_null());

+ inferred_name_ = Handle<String>();

}

// shared_info may be null if it's not cached in full code.

@@ -2389,7 +2413,8 @@ class FunctionLiteral V8_FINAL : public Expression {

protected:

FunctionLiteral(Zone* zone,

- Handle<String> name,

+ const AstRawString* name,

+ AstValueFactory* ast_value_factory,

Scope* scope,

ZoneList<Statement*>* body,

int materialized_literal_count,

@@ -2403,10 +2428,10 @@ class FunctionLiteral V8_FINAL : public Expression {

IsGeneratorFlag is_generator,

int position)

: Expression(zone, position),

- name_(name),

+ raw_name_(name),

scope_(scope),

body_(body),

- inferred_name_(zone->isolate()->factory()->empty_string()),

+ raw_inferred_name_(ast_value_factory->empty_string()),

dont_optimize_reason_(kNoReason),

materialized_literal_count_(materialized_literal_count),

expected_property_count_(expected_property_count),

@@ -2424,10 +2449,12 @@ class FunctionLiteral V8_FINAL : public Expression {

}

private:

+ const AstRawString* raw_name_;

Handle<String> name_;

Handle<SharedFunctionInfo> shared_info_;

Scope* scope_;

ZoneList<Statement*>* body_;

+ const AstString* raw_inferred_name_;

Handle<String> inferred_name_;

AstProperties ast_properties_;

BailoutReason dont_optimize_reason_;

@@ -2453,16 +2480,16 @@ class NativeFunctionLiteral V8_FINAL : public Expression {

public:

DECLARE_NODE_TYPE(NativeFunctionLiteral)

- Handle<String> name() const { return name_; }

+ Handle<String> name() const { return name_->string(); }

v8::Extension* extension() const { return extension_; }

protected:

- NativeFunctionLiteral(

- Zone* zone, Handle<String> name, v8::Extension* extension, int pos)

+ NativeFunctionLiteral(Zone* zone, const AstRawString* name,

+ v8::Extension* extension, int pos)

: Expression(zone, pos), name_(name), extension_(extension) {}

private:

- Handle<String> name_;

+ const AstRawString* name_;

v8::Extension* extension_;

};

@@ -2954,7 +2981,8 @@ class AstNullVisitor BASE_EMBEDDED {

template<class Visitor>

class AstNodeFactory V8_FINAL BASE_EMBEDDED {

public:

- explicit AstNodeFactory(Zone* zone) : zone_(zone) { }

+ explicit AstNodeFactory(Zone* zone, AstValueFactory* ast_value_factory)

+ : zone_(zone), ast_value_factory_(ast_value_factory) {}

Visitor* visitor() { return &visitor_; }

@@ -3018,8 +3046,8 @@ class AstNodeFactory V8_FINAL BASE_EMBEDDED {

VISIT_AND_RETURN(ModuleVariable, module)

}

- ModulePath* NewModulePath(Module* origin, Handle<String> name, int pos) {

- ModulePath* module = new(zone_) ModulePath(zone_, origin, name, pos);

+ ModulePath* NewModulePath(Module* origin, const AstRawString* name, int pos) {

+ ModulePath* module = new (zone_) ModulePath(zone_, origin, name, pos);

VISIT_AND_RETURN(ModulePath, module)

}

@@ -3028,7 +3056,7 @@ class AstNodeFactory V8_FINAL BASE_EMBEDDED {

VISIT_AND_RETURN(ModuleUrl, module)

}

- Block* NewBlock(ZoneStringList* labels,

+ Block* NewBlock(ZoneList<const AstRawString*>* labels,

int capacity,

bool is_initializer_block,

int pos) {

@@ -3038,7 +3066,7 @@ class AstNodeFactory V8_FINAL BASE_EMBEDDED {

}

#define STATEMENT_WITH_LABELS(NodeType) \

- NodeType* New##NodeType(ZoneStringList* labels, int pos) { \

+ NodeType* New##NodeType(ZoneList<const AstRawString*>* labels, int pos) { \

NodeType* stmt = new(zone_) NodeType(zone_, labels, pos); \

VISIT_AND_RETURN(NodeType, stmt); \

}

@@ -3049,7 +3077,7 @@ class AstNodeFactory V8_FINAL BASE_EMBEDDED {

#undef STATEMENT_WITH_LABELS

ForEachStatement* NewForEachStatement(ForEachStatement::VisitMode visit_mode,

- ZoneStringList* labels,

+ ZoneList<const AstRawString*>* labels,

int pos) {

switch (visit_mode) {

case ForEachStatement::ENUMERATE: {

@@ -3146,14 +3174,60 @@ class AstNodeFactory V8_FINAL BASE_EMBEDDED {

VISIT_AND_RETURN(CaseClause, clause)

}

- Literal* NewLiteral(Handle<Object> handle, int pos) {

- Literal* lit = new(zone_) Literal(zone_, handle, pos);

+ Literal* NewStringLiteral(const AstRawString* string, int pos) {

+ Literal* lit =

+ new (zone_) Literal(zone_, ast_value_factory_->NewString(string), pos);

+ VISIT_AND_RETURN(Literal, lit)

+ }

+ // A JavaScript symbol (ECMA-262 edition 6).

+ Literal* NewSymbolLiteral(const char* name, int pos) {

+ Literal* lit =

+ new (zone_) Literal(zone_, ast_value_factory_->NewSymbol(name), pos);

VISIT_AND_RETURN(Literal, lit)

}

Literal* NewNumberLiteral(double number, int pos) {

- return NewLiteral(

- zone_->isolate()->factory()->NewNumber(number, TENURED), pos);

+ Literal* lit = new (zone_)

+ Literal(zone_, ast_value_factory_->NewNumber(number), pos);

+ VISIT_AND_RETURN(Literal, lit)

+ }

+ Literal* NewSmiLiteral(int number, int pos) {

+ Literal* lit =

+ new (zone_) Literal(zone_, ast_value_factory_->NewSmi(number), pos);

+ VISIT_AND_RETURN(Literal, lit)

+ }

+ Literal* NewBooleanLiteral(bool b, int pos) {

+ Literal* lit =

+ new (zone_) Literal(zone_, ast_value_factory_->NewBoolean(b), pos);

+ VISIT_AND_RETURN(Literal, lit)

+ }

+ Literal* NewStringListLiteral(ZoneList<const AstRawString*>* strings,

+ int pos) {

+ Literal* lit = new (zone_)

+ Literal(zone_, ast_value_factory_->NewStringList(strings), pos);

+ VISIT_AND_RETURN(Literal, lit)

+ }

+ Literal* NewNullLiteral(int pos) {

+ Literal* lit =

+ new (zone_) Literal(zone_, ast_value_factory_->NewNull(), pos);

+ VISIT_AND_RETURN(Literal, lit)

+ }

+ Literal* NewUndefinedLiteral(int pos) {

+ Literal* lit =

+ new (zone_) Literal(zone_, ast_value_factory_->NewUndefined(), pos);

+ VISIT_AND_RETURN(Literal, lit)

+ }

+ Literal* NewTheHoleLiteral(int pos) {

+ Literal* lit =

+ new (zone_) Literal(zone_, ast_value_factory_->NewTheHole(), pos);

+ VISIT_AND_RETURN(Literal, lit)

}

ObjectLiteral* NewObjectLiteral(

@@ -3170,7 +3244,8 @@ class AstNodeFactory V8_FINAL BASE_EMBEDDED {

ObjectLiteral::Property* NewObjectLiteralProperty(Literal* key,

Expression* value) {

- return new(zone_) ObjectLiteral::Property(zone_, key, value);

+ return new (zone_)

+ ObjectLiteral::Property(zone_, ast_value_factory_, key, value);

}

ObjectLiteral::Property* NewObjectLiteralProperty(bool is_getter,

@@ -3178,12 +3253,12 @@ class AstNodeFactory V8_FINAL BASE_EMBEDDED {

int pos) {

ObjectLiteral::Property* prop =

new(zone_) ObjectLiteral::Property(zone_, is_getter, value);

- prop->set_key(NewLiteral(value->name(), pos));

+ prop->set_key(NewStringLiteral(value->raw_name(), pos));

return prop; // Not an AST node, will not be visited.

}

- RegExpLiteral* NewRegExpLiteral(Handle<String> pattern,

- Handle<String> flags,

+ RegExpLiteral* NewRegExpLiteral(const AstRawString* pattern,

+ const AstRawString* flags,

int literal_index,

int pos) {

RegExpLiteral* lit =

@@ -3205,7 +3280,7 @@ class AstNodeFactory V8_FINAL BASE_EMBEDDED {

VISIT_AND_RETURN(VariableProxy, proxy)

}

- VariableProxy* NewVariableProxy(Handle<String> name,

+ VariableProxy* NewVariableProxy(const AstRawString* name,

bool is_this,

Interface* interface = Interface::NewValue(),

int position = RelocInfo::kNoPosition) {

@@ -3233,7 +3308,7 @@ class AstNodeFactory V8_FINAL BASE_EMBEDDED {

VISIT_AND_RETURN(CallNew, call)

}

- CallRuntime* NewCallRuntime(Handle<String> name,

+ CallRuntime* NewCallRuntime(const AstRawString* name,

const Runtime::Function* function,

ZoneList<Expression*>* arguments,

int pos) {

@@ -3311,7 +3386,8 @@ class AstNodeFactory V8_FINAL BASE_EMBEDDED {

}

FunctionLiteral* NewFunctionLiteral(

- Handle<String> name,

+ const AstRawString* name,

+ AstValueFactory* ast_value_factory,

Scope* scope,

ZoneList<Statement*>* body,

int materialized_literal_count,

@@ -3325,7 +3401,7 @@ class AstNodeFactory V8_FINAL BASE_EMBEDDED {

FunctionLiteral::IsGeneratorFlag is_generator,

int position) {

FunctionLiteral* lit = new(zone_) FunctionLiteral(

- zone_, name, scope, body,

+ zone_, name, ast_value_factory, scope, body,

materialized_literal_count, expected_property_count, handler_count,

parameter_count, function_type, has_duplicate_parameters, is_function,

is_parenthesized, is_generator, position);

@@ -3337,7 +3413,8 @@ class AstNodeFactory V8_FINAL BASE_EMBEDDED {

}

NativeFunctionLiteral* NewNativeFunctionLiteral(

- Handle<String> name, v8::Extension* extension, int pos) {

+ const AstRawString* name, v8::Extension* extension,

+ int pos) {

NativeFunctionLiteral* lit =

new(zone_) NativeFunctionLiteral(zone_, name, extension, pos);

VISIT_AND_RETURN(NativeFunctionLiteral, lit)

@@ -3353,6 +3430,7 @@ class AstNodeFactory V8_FINAL BASE_EMBEDDED {

private:

Zone* zone_;

Visitor visitor_;

+ AstValueFactory* ast_value_factory_;

};

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