Call JS functions via native context instead of js builtins object.

src/parser.cc

 // Copyright 2012 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.
 
 #include "src/parser.h"
 
 #include "src/api.h"
 #include "src/ast.h"
 #include "src/ast-literal-reindexer.h"
 #include "src/bailout-reason.h"
@@ skipping 353 matching lines @@
           new (zone()) ZoneList<Expression*>(2, zone());
       VariableProxy* new_target_proxy = scope_->NewUnresolved(
           factory(), ast_value_factory()->new_target_string(), Variable::NORMAL,
           pos);
       args->Add(new_target_proxy, zone());
       VariableProxy* this_function_proxy = scope_->NewUnresolved(
           factory(), ast_value_factory()->this_function_string(),
           Variable::NORMAL, pos);
       args->Add(this_function_proxy, zone());
       CallRuntime* call = factory()->NewCallRuntime(
-          ast_value_factory()->empty_string(),
-          Runtime::FunctionForId(Runtime::kInlineDefaultConstructorCallSuper),
-          args, pos);
+          Runtime::kInlineDefaultConstructorCallSuper, args, pos);
       body->Add(factory()->NewReturnStatement(call, pos), zone());
     }
 
     materialized_literal_count = function_state.materialized_literal_count();
     expected_property_count = function_state.expected_property_count();
   }
 
   FunctionLiteral* function_literal = factory()->NewFunctionLiteral(
       name, ast_value_factory(), function_scope, body,
       materialized_literal_count, expected_property_count, parameter_count,
@@ skipping 277 matching lines @@
 }
 
 
 Expression* ParserTraits::NewThrowError(Runtime::FunctionId id,
                                         MessageTemplate::Template message,
                                         const AstRawString* arg, int pos) {
   Zone* zone = parser_->zone();
   ZoneList<Expression*>* args = new (zone) ZoneList<Expression*>(2, zone);
   args->Add(parser_->factory()->NewSmiLiteral(message, pos), zone);
   args->Add(parser_->factory()->NewStringLiteral(arg, pos), zone);
-  CallRuntime* call_constructor = parser_->factory()->NewCallRuntime(
-      parser_->ast_value_factory()->empty_string(), Runtime::FunctionForId(id),
-      args, pos);
+  CallRuntime* call_constructor =
+      parser_->factory()->NewCallRuntime(id, args, pos);
   return parser_->factory()->NewThrow(call_constructor, pos);
 }
 
 
 void ParserTraits::ReportMessageAt(Scanner::Location source_location,
                                    MessageTemplate::Template message,
                                    const char* arg, ParseErrorType error_type) {
   if (parser_->stack_overflow()) {
     // Suppress the error message (syntax error or such) in the presence of a
     // stack overflow. The isolate allows only one pending exception at at time
@@ skipping 2161 matching lines @@
 
       Expression* throw_expression =
           NewThrowTypeError(MessageTemplate::kDerivedConstructorReturn,
                             ast_value_factory()->empty_string(), pos);
 
       // %_IsSpecObject(temp)
       ZoneList<Expression*>* is_spec_object_args =
           new (zone()) ZoneList<Expression*>(1, zone());
       is_spec_object_args->Add(factory()->NewVariableProxy(temp), zone());
       Expression* is_spec_object_call = factory()->NewCallRuntime(
-          ast_value_factory()->is_spec_object_string(),
-          Runtime::FunctionForId(Runtime::kInlineIsSpecObject),
-          is_spec_object_args, pos);
+          Runtime::kInlineIsSpecObject, is_spec_object_args, pos);
 
       // %_IsSpecObject(temp) ? temp : throw_expression
       Expression* is_object_conditional = factory()->NewConditional(
           is_spec_object_call, factory()->NewVariableProxy(temp),
           throw_expression, pos);
 
       // temp === undefined
       Expression* is_undefined = factory()->NewCompareOperation(
           Token::EQ_STRICT, assign,
           factory()->NewUndefinedLiteral(RelocInfo::kNoPosition), pos);
@@ skipping 289 matching lines @@
       factory()->NewCall(next_property, next_arguments, pos);
   Expression* result_proxy = factory()->NewVariableProxy(result);
   Expression* left =
       factory()->NewAssignment(Token::ASSIGN, result_proxy, next_call, pos);
 
   // %_IsSpecObject(...)
   ZoneList<Expression*>* is_spec_object_args =
       new (zone()) ZoneList<Expression*>(1, zone());
   is_spec_object_args->Add(left, zone());
   Expression* is_spec_object_call = factory()->NewCallRuntime(
-      ast_value_factory()->is_spec_object_string(),
-      Runtime::FunctionForId(Runtime::kInlineIsSpecObject), is_spec_object_args,
-      pos);
+      Runtime::kInlineIsSpecObject, is_spec_object_args, pos);
 
   // %ThrowIteratorResultNotAnObject(result)
   Expression* result_proxy_again = factory()->NewVariableProxy(result);
   ZoneList<Expression*>* throw_arguments =
       new (zone()) ZoneList<Expression*>(1, zone());
   throw_arguments->Add(result_proxy_again, zone());
   Expression* throw_call = factory()->NewCallRuntime(
-      ast_value_factory()->throw_iterator_result_not_an_object_string(),
-      Runtime::FunctionForId(Runtime::kThrowIteratorResultNotAnObject),
-      throw_arguments, pos);
+      Runtime::kThrowIteratorResultNotAnObject, throw_arguments, pos);
 
   return factory()->NewBinaryOperation(
       Token::AND,
       factory()->NewUnaryOperation(Token::NOT, is_spec_object_call, pos),
       throw_call, pos);
 }
 
 
 void Parser::InitializeForEachStatement(ForEachStatement* stmt,
                                         Expression* each,
@@ skipping 1085 matching lines @@
                       *expected_property_count, scope_->language_mode(),
                       scope_->uses_super_property(), scope_->calls_eval());
   }
 }
 
 
 void Parser::AddAssertIsConstruct(ZoneList<Statement*>* body, int pos) {
   ZoneList<Expression*>* arguments =
       new (zone()) ZoneList<Expression*>(0, zone());
   CallRuntime* construct_check = factory()->NewCallRuntime(
-      ast_value_factory()->is_construct_call_string(),
-      Runtime::FunctionForId(Runtime::kInlineIsConstructCall), arguments, pos);
+      Runtime::kInlineIsConstructCall, arguments, pos);
   CallRuntime* non_callable_error = factory()->NewCallRuntime(
-      ast_value_factory()->empty_string(),
-      Runtime::FunctionForId(Runtime::kThrowConstructorNonCallableError),
-      arguments, pos);
+      Runtime::kThrowConstructorNonCallableError, arguments, pos);
   IfStatement* if_statement = factory()->NewIfStatement(
       factory()->NewUnaryOperation(Token::NOT, construct_check, pos),
       factory()->NewReturnStatement(non_callable_error, pos),
       factory()->NewEmptyStatement(pos), pos);
   body->Add(if_statement, zone());
 }
 
 
 Statement* Parser::BuildAssertIsCoercible(Variable* var) {
   // if (var === null || var === undefined)
@@ skipping 131 matching lines @@
   }
 
   {
     BlockState block_state(&scope_, inner_scope);
 
     // For generators, allocate and yield an iterator on function entry.
     if (IsGeneratorFunction(kind)) {
       ZoneList<Expression*>* arguments =
           new(zone()) ZoneList<Expression*>(0, zone());
       CallRuntime* allocation = factory()->NewCallRuntime(
-          ast_value_factory()->empty_string(),
-          Runtime::FunctionForId(Runtime::kCreateJSGeneratorObject), arguments,
-          pos);
+          Runtime::kCreateJSGeneratorObject, arguments, pos);
       VariableProxy* init_proxy = factory()->NewVariableProxy(
           function_state_->generator_object_variable());
       Assignment* assignment = factory()->NewAssignment(
           Token::INIT_VAR, init_proxy, allocation, RelocInfo::kNoPosition);
       VariableProxy* get_proxy = factory()->NewVariableProxy(
           function_state_->generator_object_variable());
       Yield* yield = factory()->NewYield(
           get_proxy, assignment, Yield::kInitial, RelocInfo::kNoPosition);
       body->Add(factory()->NewExpressionStatement(
           yield, RelocInfo::kNoPosition), zone());
@@ skipping 237 matching lines @@
   DCHECK(!spread_pos.IsValid());
 
   if (extension_ != NULL) {
     // The extension structures are only accessible while parsing the
     // very first time not when reparsing because of lazy compilation.
     scope_->DeclarationScope()->ForceEagerCompilation();
   }
 
   const Runtime::Function* function = Runtime::FunctionForName(name->string());
 
-  // Check for built-in IS_VAR macro.
-  if (function != NULL &&
-      function->intrinsic_type == Runtime::RUNTIME &&
-      function->function_id == Runtime::kIS_VAR) {
-    // %IS_VAR(x) evaluates to x if x is a variable,
-    // leads to a parse error otherwise.  Could be implemented as an
-    // inline function %_IS_VAR(x) to eliminate this special case.
-    if (args->length() == 1 && args->at(0)->AsVariableProxy() != NULL) {
-      return args->at(0);
-    } else {
-      ReportMessage(MessageTemplate::kNotIsvar);
+  if (function != NULL) {
+    // Check for built-in IS_VAR macro.
+    if (function->function_id == Runtime::kIS_VAR) {
+      DCHECK_EQ(Runtime::RUNTIME, function->intrinsic_type);
+      // %IS_VAR(x) evaluates to x if x is a variable,
+      // leads to a parse error otherwise.  Could be implemented as an
+      // inline function %_IS_VAR(x) to eliminate this special case.
+      if (args->length() == 1 && args->at(0)->AsVariableProxy() != NULL) {
+        return args->at(0);
+      } else {
+        ReportMessage(MessageTemplate::kNotIsvar);
+        *ok = false;
+        return NULL;
+      }
+    }
+
+    // Check that the expected number of arguments are being passed.
+    if (function->nargs != -1 && function->nargs != args->length()) {
+      ReportMessage(MessageTemplate::kIllegalAccess);
       *ok = false;
       return NULL;
     }
+
+    return factory()->NewCallRuntime(function, args, pos);
   }
 
-  // Check that the expected number of arguments are being passed.
-  if (function != NULL &&
-      function->nargs != -1 &&
-      function->nargs != args->length()) {
-    ReportMessage(MessageTemplate::kIllegalAccess);
-    *ok = false;
-    return NULL;
-  }
+  int context_index = Context::IntrinsicIndexForName(name->string());
 
-  // Check that the function is defined if it's an inline runtime call.
-  if (function == NULL && name->FirstCharacter() == '_') {
+  // Check that the function is defined.
+  if (context_index == Context::kNotFound) {
     ParserTraits::ReportMessage(MessageTemplate::kNotDefined, name);
     *ok = false;
     return NULL;
   }
 
-  // We have a valid intrinsics call or a call to a builtin.
-  return factory()->NewCallRuntime(name, function, args, pos);
+  return factory()->NewCallRuntime(context_index, args, pos);
 }
 
 
 Literal* Parser::GetLiteralUndefined(int position) {
   return factory()->NewUndefinedLiteral(position);
 }
 
 
 void Parser::CheckConflictingVarDeclarations(Scope* scope, bool* ok) {
   Declaration* decl = scope->CheckConflictingVarDeclarations();
@@ skipping 1122 matching lines @@
     int i = 0;
     while (i < expressions->length()) {
       Expression* sub = expressions->at(i++);
       Expression* cooked_str = cooked_strings->at(i);
 
       // Let middle be ToString(sub).
       ZoneList<Expression*>* args =
           new (zone()) ZoneList<Expression*>(1, zone());
       args->Add(sub, zone());
       Expression* middle = factory()->NewCallRuntime(
-          ast_value_factory()->to_string_string(), NULL, args,
-          sub->position());
+          Context::TO_STRING_FUN_INDEX, args, sub->position());
 
       expr = factory()->NewBinaryOperation(
           Token::ADD, factory()->NewBinaryOperation(
                           Token::ADD, expr, middle, expr->position()),
           cooked_str, sub->position());
     }
     return expr;
   } else {
     uint32_t hash = ComputeTemplateLiteralHash(lit);
 
@@ skipping 11 matching lines @@
             const_cast<ZoneList<Expression*>*>(raw_strings), raw_idx,
             is_strong(language_mode()), pos),
         zone());
 
     // Ensure hash is suitable as a Smi value
     Smi* hash_obj = Smi::cast(Internals::IntToSmi(static_cast<int>(hash)));
     args->Add(factory()->NewSmiLiteral(hash_obj->value(), pos), zone());
 
     this->CheckPossibleEvalCall(tag, scope_);
     Expression* call_site = factory()->NewCallRuntime(
-        ast_value_factory()->get_template_callsite_string(), NULL, args, start);
+        Context::GET_TEMPLATE_CALL_SITE_INDEX, args, start);
 
     // Call TagFn
     ZoneList<Expression*>* call_args =
         new (zone()) ZoneList<Expression*>(expressions->length() + 1, zone());
     call_args->Add(call_site, zone());
     call_args->AddAll(*expressions, zone());
     return factory()->NewCall(tag, call_args, pos);
   }
 }
 
@@ skipping 35 matching lines @@
   if (list->length() == 1) {
     // Spread-call with single spread argument produces an InternalArray
     // containing the values from the array.
     //
     // Function is called or constructed with the produced array of arguments
     //
     // EG: Apply(Func, Spread(spread0))
     ZoneList<Expression*>* spread_list =
         new (zone()) ZoneList<Expression*>(0, zone());
     spread_list->Add(list->at(0)->AsSpread()->expression(), zone());
-    args->Add(
-        factory()->NewCallRuntime(ast_value_factory()->spread_iterable_string(),
-                                  NULL, spread_list, RelocInfo::kNoPosition),
-        zone());
+    args->Add(factory()->NewCallRuntime(Context::SPREAD_ITERABLE_INDEX,
+                                        spread_list, RelocInfo::kNoPosition),
+              zone());
     return args;
   } else {
     // Spread-call with multiple arguments produces array literals for each
     // sequences of unspread arguments, and converts each spread iterable to
     // an Internal array. Finally, all of these produced arrays are flattened
     // into a single InternalArray, containing the arguments for the call.
     //
     // EG: Apply(Func, Flatten([unspread0, unspread1], Spread(spread0),
     //                         Spread(spread1), [unspread2, unspread3]))
     int i = 0;
@@ skipping 13 matching lines @@
                                              RelocInfo::kNoPosition),
                   zone());
 
         if (i == n) break;
       }
 
       // Push eagerly spread argument
       ZoneList<v8::internal::Expression*>* spread_list =
           new (zone()) ZoneList<v8::internal::Expression*>(1, zone());
       spread_list->Add(list->at(i++)->AsSpread()->expression(), zone());
-      args->Add(factory()->NewCallRuntime(
-                    ast_value_factory()->spread_iterable_string(), NULL,
-                    spread_list, RelocInfo::kNoPosition),
+      args->Add(factory()->NewCallRuntime(Context::SPREAD_ITERABLE_INDEX,
+                                          spread_list, RelocInfo::kNoPosition),
                 zone());
     }
 
     list = new (zone()) ZoneList<v8::internal::Expression*>(1, zone());
-    list->Add(factory()->NewCallRuntime(
-                  ast_value_factory()->spread_arguments_string(), NULL, args,
-                  RelocInfo::kNoPosition),
+    list->Add(factory()->NewCallRuntime(Context::SPREAD_ARGUMENTS_INDEX, args,
+                                        RelocInfo::kNoPosition),
               zone());
     return list;
   }
   UNREACHABLE();
 }
 
 
 Expression* Parser::SpreadCall(Expression* function,
                                ZoneList<v8::internal::Expression*>* args,
                                int pos) {
   if (function->IsSuperCallReference()) {
     // Super calls
     // %ReflectConstruct(%GetPrototype(<this-function>), args, new.target))
     ZoneList<Expression*>* tmp = new (zone()) ZoneList<Expression*>(1, zone());
     tmp->Add(function->AsSuperCallReference()->this_function_var(), zone());
-    Expression* get_prototype = factory()->NewCallRuntime(
-        ast_value_factory()->empty_string(),
-        Runtime::FunctionForId(Runtime::kGetPrototype), tmp, pos);
+    Expression* get_prototype =
+        factory()->NewCallRuntime(Runtime::kGetPrototype, tmp, pos);
     args->InsertAt(0, get_prototype, zone());
     args->Add(function->AsSuperCallReference()->new_target_var(), zone());
-    return factory()->NewCallRuntime(
-        ast_value_factory()->reflect_construct_string(), NULL, args, pos);
+    return factory()->NewCallRuntime(Context::REFLECT_CONSTRUCT_INDEX, args,
+                                     pos);
   } else {
     if (function->IsProperty()) {
       // Method calls
       if (function->AsProperty()->IsSuperAccess()) {
         Expression* home =
             ThisExpression(scope_, factory(), RelocInfo::kNoPosition);
         args->InsertAt(0, function, zone());
         args->InsertAt(1, home, zone());
       } else {
         Variable* temp =
             scope_->NewTemporary(ast_value_factory()->empty_string());
         VariableProxy* obj = factory()->NewVariableProxy(temp);
         Assignment* assign_obj = factory()->NewAssignment(
             Token::ASSIGN, obj, function->AsProperty()->obj(),
             RelocInfo::kNoPosition);
         function = factory()->NewProperty(
             assign_obj, function->AsProperty()->key(), RelocInfo::kNoPosition);
         args->InsertAt(0, function, zone());
         obj = factory()->NewVariableProxy(temp);
         args->InsertAt(1, obj, zone());
       }
     } else {
       // Non-method calls
       args->InsertAt(0, function, zone());
       args->InsertAt(1, factory()->NewUndefinedLiteral(RelocInfo::kNoPosition),
                      zone());
     }
-    return factory()->NewCallRuntime(
-        ast_value_factory()->reflect_apply_string(), NULL, args, pos);
+    return factory()->NewCallRuntime(Context::REFLECT_APPLY_INDEX, args, pos);
   }
 }
 
 
 Expression* Parser::SpreadCallNew(Expression* function,
                                   ZoneList<v8::internal::Expression*>* args,
                                   int pos) {
   args->InsertAt(0, function, zone());
 
-  return factory()->NewCallRuntime(
-      ast_value_factory()->reflect_construct_string(), NULL, args, pos);
+  return factory()->NewCallRuntime(Context::REFLECT_CONSTRUCT_INDEX, args, pos);
 }
 }  // namespace internal
 }  // namespace v8