mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1 | // Copyright 2013 the V8 project authors. All rights reserved. |
| 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | "use strict"; |
| 29 | |
| 30 | // This file relies on the fact that the following declarations have been made |
| 31 | // in runtime.js: |
| 32 | // var $Function = global.Function; |
| 33 | |
| 34 | // ---------------------------------------------------------------------------- |
| 35 | |
| 36 | |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 37 | // Generator functions and objects are specified by ES6, sections 15.19.3 and |
| 38 | // 15.19.4. |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 39 | |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 40 | function GeneratorObjectNext(value) { |
mstarzinger@chromium.org | b228be0 | 2013-04-18 14:56:59 +0000 | [diff] [blame] | 41 | if (!IS_GENERATOR(this)) { |
| 42 | throw MakeTypeError('incompatible_method_receiver', |
| 43 | ['[Generator].prototype.next', this]); |
| 44 | } |
| 45 | |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 46 | return %_GeneratorNext(this, value); |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 47 | } |
| 48 | |
| 49 | function GeneratorObjectThrow(exn) { |
mstarzinger@chromium.org | b228be0 | 2013-04-18 14:56:59 +0000 | [diff] [blame] | 50 | if (!IS_GENERATOR(this)) { |
| 51 | throw MakeTypeError('incompatible_method_receiver', |
| 52 | ['[Generator].prototype.throw', this]); |
| 53 | } |
| 54 | |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 55 | return %_GeneratorThrow(this, exn); |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 56 | } |
| 57 | |
danno@chromium.org | 4172848 | 2013-06-12 22:31:22 +0000 | [diff] [blame] | 58 | function GeneratorFunctionPrototypeConstructor(x) { |
| 59 | if (%_IsConstructCall()) { |
| 60 | throw MakeTypeError('not_constructor', ['GeneratorFunctionPrototype']); |
| 61 | } |
| 62 | } |
| 63 | |
| 64 | function GeneratorFunctionConstructor(arg1) { // length == 1 |
| 65 | var source = NewFunctionString(arguments, 'function*'); |
| 66 | var global_receiver = %GlobalReceiver(global); |
| 67 | // Compile the string in the constructor and not a helper so that errors |
| 68 | // appear to come from here. |
| 69 | var f = %_CallFunction(global_receiver, %CompileString(source, true)); |
| 70 | %FunctionMarkNameShouldPrintAsAnonymous(f); |
| 71 | return f; |
| 72 | } |
| 73 | |
| 74 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 75 | function SetUpGenerators() { |
| 76 | %CheckIsBootstrapping(); |
| 77 | var GeneratorObjectPrototype = GeneratorFunctionPrototype.prototype; |
| 78 | InstallFunctions(GeneratorObjectPrototype, |
| 79 | DONT_ENUM | DONT_DELETE | READ_ONLY, |
| 80 | ["next", GeneratorObjectNext, |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 81 | "throw", GeneratorObjectThrow]); |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 82 | %SetProperty(GeneratorObjectPrototype, "constructor", |
| 83 | GeneratorFunctionPrototype, DONT_ENUM | DONT_DELETE | READ_ONLY); |
| 84 | %SetPrototype(GeneratorFunctionPrototype, $Function.prototype); |
danno@chromium.org | 4172848 | 2013-06-12 22:31:22 +0000 | [diff] [blame] | 85 | %SetCode(GeneratorFunctionPrototype, GeneratorFunctionPrototypeConstructor); |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 86 | %SetProperty(GeneratorFunctionPrototype, "constructor", |
| 87 | GeneratorFunction, DONT_ENUM | DONT_DELETE | READ_ONLY); |
| 88 | %SetPrototype(GeneratorFunction, $Function); |
danno@chromium.org | 4172848 | 2013-06-12 22:31:22 +0000 | [diff] [blame] | 89 | %SetCode(GeneratorFunction, GeneratorFunctionConstructor); |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 90 | } |
| 91 | |
| 92 | SetUpGenerators(); |