Andrew Zambazos
108 lines
4.2 KiB
JavaScript
108 lines
4.2 KiB
JavaScript
/*
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* Copyright (C) 2013 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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WI.FormatterSourceMap = class FormatterSourceMap extends WI.Object
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{
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constructor(originalLineEndings, formattedLineEndings, mapping)
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{
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super();
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this._originalLineEndings = originalLineEndings;
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this._formattedLineEndings = formattedLineEndings;
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this._mapping = mapping;
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}
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// Static
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static fromSourceMapData({originalLineEndings, formattedLineEndings, mapping})
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{
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return new WI.FormatterSourceMap(originalLineEndings, formattedLineEndings, mapping);
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}
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// Public
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originalToFormatted(lineNumber, columnNumber)
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{
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var originalPosition = this._locationToPosition(this._originalLineEndings, lineNumber || 0, columnNumber || 0);
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return this.originalPositionToFormatted(originalPosition);
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}
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originalPositionToFormatted(originalPosition)
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{
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var formattedPosition = this._convertPosition(this._mapping.original, this._mapping.formatted, originalPosition);
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return this._positionToLocation(this._formattedLineEndings, formattedPosition);
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}
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originalPositionToFormattedPosition(originalPosition)
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{
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return this._convertPosition(this._mapping.original, this._mapping.formatted, originalPosition);
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}
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formattedToOriginal(lineNumber, columnNumber)
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{
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var originalPosition = this.formattedToOriginalOffset(lineNumber, columnNumber);
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return this._positionToLocation(this._originalLineEndings, originalPosition);
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}
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formattedToOriginalOffset(lineNumber, columnNumber)
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{
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var formattedPosition = this._locationToPosition(this._formattedLineEndings, lineNumber || 0, columnNumber || 0);
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var originalPosition = this._convertPosition(this._mapping.formatted, this._mapping.original, formattedPosition);
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return originalPosition;
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}
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formattedPositionToOriginalPosition(formattedPosition)
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{
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return this._convertPosition(this._mapping.formatted, this._mapping.original, formattedPosition);
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}
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// Private
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_locationToPosition(lineEndings, lineNumber, columnNumber)
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{
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var lineOffset = lineNumber ? lineEndings[lineNumber - 1] + 1 : 0;
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return lineOffset + columnNumber;
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}
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_positionToLocation(lineEndings, position)
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{
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var lineNumber = lineEndings.upperBound(position - 1);
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if (!lineNumber)
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var columnNumber = position;
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else
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var columnNumber = position - lineEndings[lineNumber - 1] - 1;
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return {lineNumber, columnNumber};
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}
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_convertPosition(positions1, positions2, positionInPosition1)
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{
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var index = positions1.upperBound(positionInPosition1) - 1;
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var convertedPosition = positions2[index] + positionInPosition1 - positions1[index];
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if (index < positions2.length - 1 && convertedPosition > positions2[index + 1])
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convertedPosition = positions2[index + 1];
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return convertedPosition;
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}
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};
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