92 lines
2.6 KiB
Haxe
92 lines
2.6 KiB
Haxe
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/*
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* Copyright (C)2005-2019 Haxe Foundation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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package php;
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/**
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Generator is not a Haxe Iterable. It can be iterated one time only.
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Unfortunately Haxe does not know that in PHP generators may have no `return` expression or `return value` with any type of `value`.
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Use `return null` or untyped cast to workaround this issue:
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```haxe
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function generatorWithoutReturn():Generator {
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php.Syntax.yield(1);
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return null;
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}
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function generatorWithReturn():Generator {
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php.Syntax.yield(1);
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return cast "hello";
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}
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var g = generatorWithReturn();
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for(i in g) {
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trace(i);
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}
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trace(g.getReturn()); // "hello"
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```
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@see http://php.net/manual/en/class.generator.php
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**/
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@:native('Generator')
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extern class Generator {
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function current():Dynamic;
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function getReturn():Dynamic;
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function key():Dynamic;
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function next():Void;
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function rewind():Void;
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function send(value:Dynamic):Dynamic;
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@:native('throw')
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function throwError(exception:Throwable):Dynamic;
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function valid():Bool;
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inline function iterator():GeneratorIterator {
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return new GeneratorIterator(this);
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}
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}
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private class GeneratorIterator {
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var generator:Generator;
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/**
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This field is required to maintain execution order of .next()/.valid()/.current() methods.
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@see http://php.net/manual/en/class.iterator.php
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**/
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var first:Bool = true;
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public inline function new(generator:Generator) {
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this.generator = generator;
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}
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public inline function hasNext():Bool {
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if (first) {
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first = false;
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} else {
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generator.next();
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}
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return generator.valid();
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}
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public inline function next():Dynamic {
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return generator.current();
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}
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}
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