Andrew Zambazos
106 lines
3.3 KiB
JavaScript
106 lines
3.3 KiB
JavaScript
/*
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* Copyright (C) 2014 Apple Inc. All rights reserved.
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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. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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// FIXME: Investigate folding this into SourceCodeLocation proper so it can always be as lazy as possible.
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// Lazily compute the full SourceCodeLocation information only when such information is needed.
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// - raw information doesn't require initialization, we have that information
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// - formatted information does require initialization, done by overriding public APIs.
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// - display information does require initialization, done by overriding private funnel API resolveMappedLocation.
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WI.LazySourceCodeLocation = class LazySourceCodeLocation extends WI.SourceCodeLocation
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{
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constructor(sourceCode, lineNumber, columnNumber)
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{
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super(null, lineNumber, columnNumber);
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console.assert(sourceCode);
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this._initialized = false;
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this._lazySourceCode = sourceCode;
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}
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// Public
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get sourceCode()
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{
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return this._lazySourceCode;
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}
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set sourceCode(sourceCode)
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{
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// Getter and setter must be provided together.
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this.setSourceCode(sourceCode);
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}
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get formattedLineNumber()
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{
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this._lazyInitialization();
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return this._formattedLineNumber;
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}
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get formattedColumnNumber()
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{
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this._lazyInitialization();
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return this._formattedColumnNumber;
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}
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formattedPosition()
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{
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this._lazyInitialization();
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return new WI.SourceCodePosition(this._formattedLineNumber, this._formattedColumnNumber);
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}
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hasFormattedLocation()
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{
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this._lazyInitialization();
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return super.hasFormattedLocation();
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}
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hasDifferentDisplayLocation()
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{
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this._lazyInitialization();
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return super.hasDifferentDisplayLocation();
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}
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// Protected
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resolveMappedLocation()
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{
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this._lazyInitialization();
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super.resolveMappedLocation();
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}
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// Private
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_lazyInitialization()
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{
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if (!this._initialized) {
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this._initialized = true;
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this.sourceCode = this._lazySourceCode;
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}
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}
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};
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