58 lines
2.3 KiB
JavaScript
58 lines
2.3 KiB
JavaScript
/*
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* Copyright (C) 2017 Yusuke Suzuki <utatane.tea@gmail.com>.
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*
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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
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* are met:
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* 1. 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* 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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*/
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// We keep this function small very carefully to encourage inlining.
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@globalPrivate
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function mapIteratorNext(bucket, kind)
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{
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"use strict";
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var value;
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bucket = @mapBucketNext(bucket);
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@putMapIteratorInternalField(this, @mapIteratorFieldMapBucket, bucket);
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var done = bucket === @sentinelMapBucket;
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if (!done) {
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var key = @mapBucketKey(bucket);
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value = @mapBucketValue(bucket);
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if (kind === @iterationKindEntries)
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value = [ key, value ]
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else if (kind === @iterationKindKey)
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value = key;
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}
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return { value, done };
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}
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function next()
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{
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"use strict";
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if (!@isMapIterator(this))
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@throwTypeError("%MapIteratorPrototype%.next requires that |this| be an Map Iterator instance");
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var bucket = @getMapIteratorInternalField(this, @mapIteratorFieldMapBucket);
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var kind = @getMapIteratorInternalField(this, @mapIteratorFieldKind);
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return @mapIteratorNext.@call(this, bucket, kind);
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}
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