Save the native name on the function instead of finding it in the token stream for lazily-linked na…

runtime/vm/parser.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/parser.h"
 
 #include "lib/invocation_mirror.h"
 #include "platform/utils.h"
 #include "vm/ast_transformer.h"
 #include "vm/bootstrap.h"
@@ skipping 3807 matching lines @@
   RawFunction::AsyncModifier async_modifier = ParseFunctionModifier();
   if ((method->IsFactoryOrConstructor() || method->IsSetter()) &&
       (async_modifier != RawFunction::kNoModifier)) {
     ReportError(modifier_pos,
                 "%s '%s' may not be async, async* or sync*",
                 (method->IsSetter()) ? "setter" : "constructor",
                 method->name->ToCString());
   }
 
   intptr_t method_end_pos = TokenPos();
+  String* native_name = NULL;
   if ((CurrentToken() == Token::kLBRACE) ||
       (CurrentToken() == Token::kARROW)) {
     if (method->has_abstract) {
       ReportError(TokenPos(),
                   "abstract method '%s' may not have a function body",
                   method->name->ToCString());
     } else if (method->has_external) {
       ReportError(TokenPos(),
                   "external %s '%s' may not have a function body",
                   method->IsFactoryOrConstructor() ? "constructor" : "method",
@@ skipping 35 matching lines @@
                   method->name->ToCString());
     } else if (method->IsConstructor() && method->has_const) {
       ReportError(method->name_pos,
                   "const constructor '%s' may not be native",
                   method->name->ToCString());
     }
     if (method->redirect_name != NULL) {
       ReportError(method->name_pos,
                   "Constructor with redirection may not have a function body");
     }
-    ParseNativeDeclaration();
+    native_name = &ParseNativeDeclaration();
     method_end_pos = TokenPos();
     ExpectSemicolon();
     method->has_native = true;
   } else {
     // We haven't found a method body. Issue error if one is required.
     const bool must_have_body =
         method->has_static &&
         !method->has_external &&
         redirection_type.IsNull();
     if (must_have_body) {
@@ skipping 57 matching lines @@
   func.set_result_type(*method->type);
   func.set_end_token_pos(method_end_pos);
   func.set_is_redirecting(is_redirecting);
   func.set_modifier(async_modifier);
   if (library_.is_dart_scheme() && library_.IsPrivate(*method->name)) {
     func.set_is_reflectable(false);
   }
   if (method->metadata_pos > 0) {
     library_.AddFunctionMetadata(func, method->metadata_pos);
   }
+  if (method->has_native) {
+    func.set_native_name(*native_name);
+  }
 
   // If this method is a redirecting factory, set the redirection information.
   if (!redirection_type.IsNull()) {
     ASSERT(func.IsFactory());
     func.SetRedirectionType(redirection_type);
     if (!redirection_identifier.IsNull()) {
       func.SetRedirectionIdentifier(redirection_identifier);
     }
   }
 
@@ skipping 1607 matching lines @@
   const intptr_t function_pos = TokenPos();
   ParamList params;
   const bool allow_explicit_default_values = true;
   ParseFormalParameterList(allow_explicit_default_values, false, &params);
 
   const intptr_t modifier_pos = TokenPos();
   RawFunction::AsyncModifier func_modifier = ParseFunctionModifier();
 
   intptr_t function_end_pos = function_pos;
   bool is_native = false;
+  String* native_name = NULL;
   if (is_external) {
     function_end_pos = TokenPos();
     ExpectSemicolon();
   } else if (CurrentToken() == Token::kLBRACE) {
     SkipBlock();
     function_end_pos = TokenPos();
     ExpectToken(Token::kRBRACE);
   } else if (CurrentToken() == Token::kARROW) {
     if ((func_modifier & RawFunction::kGeneratorBit) != 0) {
       ReportError(modifier_pos,
                   "=> style function may not be sync* or async* generator");
     }
     ConsumeToken();
     BoolScope allow_await(&this->await_is_keyword_,
                           func_modifier != RawFunction::kNoModifier);
     SkipExpr();
     function_end_pos = TokenPos();
     ExpectSemicolon();
   } else if (IsSymbol(Symbols::Native())) {
-    ParseNativeDeclaration();
+    native_name = &ParseNativeDeclaration();
     function_end_pos = TokenPos();
     ExpectSemicolon();
     is_native = true;
   } else {
     ReportError("function block expected");
   }
   Function& func = Function::Handle(Z,
       Function::New(func_name,
                     RawFunction::kRegularFunction,
                     is_static,
                     /* is_const = */ false,
                     /* is_abstract = */ false,
                     is_external,
                     is_native,
                     current_class(),
                     decl_begin_pos));
   func.set_result_type(result_type);
   func.set_end_token_pos(function_end_pos);
   func.set_modifier(func_modifier);
   if (library_.is_dart_scheme() && library_.IsPrivate(func_name)) {
     func.set_is_reflectable(false);
   }
+  if (is_native) {
+    func.set_native_name(*native_name);
+  }
   AddFormalParamsToFunction(&params, func);
   top_level->AddFunction(func);
   if (!is_patch) {
     library_.AddObject(func, func_name);
   } else {
     library_.ReplaceObject(func, func_name);
   }
   if (metadata_pos >= 0) {
     library_.AddFunctionMetadata(func, metadata_pos);
   }
@@ skipping 88 matching lines @@
 
   const intptr_t modifier_pos = TokenPos();
   RawFunction::AsyncModifier func_modifier = ParseFunctionModifier();
   if (!is_getter && (func_modifier != RawFunction::kNoModifier)) {
     ReportError(modifier_pos,
                 "setter function cannot be async, async* or sync*");
   }
 
   intptr_t accessor_end_pos = accessor_pos;
   bool is_native = false;
+  String* native_name = NULL;
   if (is_external) {
     accessor_end_pos = TokenPos();
     ExpectSemicolon();
   } else if (CurrentToken() == Token::kLBRACE) {
     SkipBlock();
     accessor_end_pos = TokenPos();
     ExpectToken(Token::kRBRACE);
   } else if (CurrentToken() == Token::kARROW) {
     if (is_getter && ((func_modifier & RawFunction::kGeneratorBit) != 0)) {
       ReportError(modifier_pos,
                   "=> style getter may not be sync* or async* generator");
     }
     ConsumeToken();
     BoolScope allow_await(&this->await_is_keyword_,
                           func_modifier != RawFunction::kNoModifier);
     SkipExpr();
     accessor_end_pos = TokenPos();
     ExpectSemicolon();
   } else if (IsSymbol(Symbols::Native())) {
-    ParseNativeDeclaration();
+    native_name = &ParseNativeDeclaration();
     accessor_end_pos = TokenPos();
     ExpectSemicolon();
     is_native = true;
   } else {
     ReportError("function block expected");
   }
   Function& func = Function::Handle(Z,
       Function::New(accessor_name,
                     is_getter ? RawFunction::kGetterFunction :
                                 RawFunction::kSetterFunction,
                     is_static,
                     /* is_const = */ false,
                     /* is_abstract = */ false,
                     is_external,
                     is_native,
                     current_class(),
                     decl_begin_pos));
   func.set_result_type(result_type);
   func.set_end_token_pos(accessor_end_pos);
   func.set_modifier(func_modifier);
   if (is_native) {
     func.set_is_debuggable(false);
+    func.set_native_name(*native_name);
   }
   if (library_.is_dart_scheme() && library_.IsPrivate(accessor_name)) {
     func.set_is_reflectable(false);
   }
   AddFormalParamsToFunction(&params, func);
   top_level->AddFunction(func);
   if (!is_patch) {
     library_.AddObject(func, accessor_name);
   } else {
     library_.ReplaceObject(func, accessor_name);
@@ skipping 8543 matching lines @@
 void Parser::SkipQualIdent() {
   ASSERT(IsIdentifier());
   ConsumeToken();
   if (CurrentToken() == Token::kPERIOD) {
     ConsumeToken();  // Consume the kPERIOD token.
     ExpectIdentifier("identifier expected after '.'");
   }
 }
 
 }  // namespace dart