591a8ec86c
* src/heap.h: * src/heap.cc: * src/objects-debug.cc: * src/objects-inl.h: * src/objects-printer.cc: * src/objects-visiting.cc: * src/objects.cc: * src/objects.h: Define a new object type, JSGeneratorObject. * src/factory.h: * src/factory.cc (NewFunctionFromSharedFunctionInfo): Generator function inital maps construct the new JS_GENERATOR_OBJECT_TYPE objects, not generic JSObjects. * src/runtime.h: * src/runtime.cc (Runtime_CreateJSGeneratorObject): * src/arm/full-codegen-arm.cc (Generate): * src/ia32/full-codegen-ia32.cc (Generate): * src/x64/full-codegen-x64.cc (Generate): Before visiting generator bodies, arrange to construct and return a generator object. * test/mjsunit/harmony/generators-objects.js: Add tests for the properties and prototype of generator objects. BUG=v8:2355 TEST=mjsunit/harmony/generators-objects Review URL: https://codereview.chromium.org/13542002 Patch from Andy Wingo <wingo@igalia.com>. git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14264 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
69 lines
2.7 KiB
JavaScript
69 lines
2.7 KiB
JavaScript
// Copyright 2013 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Flags: --harmony-generators --harmony-scoping
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// Test instantations of generators.
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// Generators shouldn't allocate stack slots. This test will abort in debug
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// mode if generators have stack slots.
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function TestContextAllocation() {
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function* g1(a, b, c) { yield 1; return [a, b, c]; }
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function* g2() { yield 1; return arguments; }
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function* g3() { yield 1; return this; }
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function* g4() { var x = 10; yield 1; return x; }
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// Temporary variable context allocation
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function* g5(l) { "use strict"; yield 1; for (let x in l) { yield x; } }
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g1();
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g2();
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g3();
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g4();
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g5(["foo"]);
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}
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TestContextAllocation();
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// Test the properties and prototype of a generator object.
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function TestGeneratorObject() {
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function* g() { yield 1; }
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var iter = g();
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assertSame(g.prototype, Object.getPrototypeOf(iter));
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assertTrue(iter instanceof g);
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assertEquals([], Object.getOwnPropertyNames(iter));
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assertTrue(iter !== g());
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// g() is the same as new g().
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iter = new g();
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assertSame(g.prototype, Object.getPrototypeOf(iter));
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assertTrue(iter instanceof g);
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assertEquals([], Object.getOwnPropertyNames(iter));
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assertTrue(iter !== new g());
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}
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TestGeneratorObject();
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