Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(109)

Side by Side Diff: src/parser.cc

Issue 7044100: Constant-fold !<number> (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: '' Created 9 years, 6 months ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View unified diff | Download patch | Annotate | Revision Log
« no previous file with comments | « no previous file | no next file » | no next file with comments »
Toggle Intra-line Diffs ('i') | Expand Comments ('e') | Collapse Comments ('c') | Show Comments Hide Comments ('s')
OLDNEW
1 // Copyright 2011 the V8 project authors. All rights reserved. 1 // Copyright 2011 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
(...skipping 2538 matching lines...) Expand 10 before | Expand all | Expand 10 after
2549 if (expression != NULL && expression->AsLiteral() && 2549 if (expression != NULL && expression->AsLiteral() &&
2550 expression->AsLiteral()->handle()->IsNumber()) { 2550 expression->AsLiteral()->handle()->IsNumber()) {
2551 double value = expression->AsLiteral()->handle()->Number(); 2551 double value = expression->AsLiteral()->handle()->Number();
2552 switch (op) { 2552 switch (op) {
2553 case Token::ADD: 2553 case Token::ADD:
2554 return expression; 2554 return expression;
2555 case Token::SUB: 2555 case Token::SUB:
2556 return NewNumberLiteral(-value); 2556 return NewNumberLiteral(-value);
2557 case Token::BIT_NOT: 2557 case Token::BIT_NOT:
2558 return NewNumberLiteral(~DoubleToInt32(value)); 2558 return NewNumberLiteral(~DoubleToInt32(value));
2559 case Token::NOT: {
2560 bool bool_value = isnan(value) ? true : (value == 0);
2561 Handle<Object> boolean(isolate()->heap()->ToBoolean(bool_value));
2562 return new(zone()) Literal(boolean);
2563 }
2559 default: break; 2564 default: break;
2560 } 2565 }
2561 } 2566 }
2562 2567
2563 // "delete identifier" is a syntax error in strict mode. 2568 // "delete identifier" is a syntax error in strict mode.
2564 if (op == Token::DELETE && top_scope_->is_strict_mode()) { 2569 if (op == Token::DELETE && top_scope_->is_strict_mode()) {
2565 VariableProxy* operand = expression->AsVariableProxy(); 2570 VariableProxy* operand = expression->AsVariableProxy();
2566 if (operand != NULL && !operand->is_this()) { 2571 if (operand != NULL && !operand->is_this()) {
2567 ReportMessage("strict_delete", Vector<const char*>::empty()); 2572 ReportMessage("strict_delete", Vector<const char*>::empty());
2568 *ok = false; 2573 *ok = false;
(...skipping 2426 matching lines...) Expand 10 before | Expand all | Expand 10 after
4995 info->is_global(), 5000 info->is_global(),
4996 info->StrictMode()); 5001 info->StrictMode());
4997 } 5002 }
4998 } 5003 }
4999 5004
5000 info->SetFunction(result); 5005 info->SetFunction(result);
5001 return (result != NULL); 5006 return (result != NULL);
5002 } 5007 }
5003 5008
5004 } } // namespace v8::internal 5009 } } // namespace v8::internal
OLDNEW
« no previous file with comments | « no previous file | no next file » | no next file with comments »

Powered by Google App Engine
This is Rietveld 408576698