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/*
* Copyright (C) 2013 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
WebInspector.FormatterSourceMap = function(originalLineEndings, formattedLineEndings, mapping)
{
WebInspector.Object.call(this);
this._originalLineEndings = originalLineEndings;
this._formattedLineEndings = formattedLineEndings;
this._mapping = mapping;
};
WebInspector.FormatterSourceMap.fromBuilder = function(builder)
{
return new WebInspector.FormatterSourceMap(builder.originalLineEndings, builder.formattedLineEndings, builder.mapping);
}
WebInspector.FormatterSourceMap.prototype = {
constructor: WebInspector.FormatterSourceMap,
// Public
originalToFormatted: function(lineNumber, columnNumber)
{
var originalPosition = this._locationToPosition(this._originalLineEndings, lineNumber || 0, columnNumber || 0);
var formattedPosition = this._convertPosition(this._mapping.original, this._mapping.formatted, originalPosition);
return this._positionToLocation(this._formattedLineEndings, formattedPosition);
},
formattedToOriginal: function(lineNumber, columnNumber)
{
var formattedPosition = this._locationToPosition(this._formattedLineEndings, lineNumber || 0, columnNumber || 0);
var originalPosition = this._convertPosition(this._mapping.formatted, this._mapping.original, formattedPosition);
return this._positionToLocation(this._originalLineEndings, originalPosition);
},
// Private
_locationToPosition: function(lineEndings, lineNumber, columnNumber)
{
var lineOffset = lineNumber ? lineEndings[lineNumber - 1] + 1 : 0;
return lineOffset + columnNumber;
},
_positionToLocation: function(lineEndings, position)
{
var lineNumber = lineEndings.upperBound(position - 1);
if (!lineNumber)
var columnNumber = position;
else
var columnNumber = position - lineEndings[lineNumber - 1] - 1;
return {lineNumber:lineNumber, columnNumber:columnNumber};
},
_convertPosition: function(positions1, positions2, positionInPosition1)
{
var index = positions1.upperBound(positionInPosition1) - 1;
var convertedPosition = positions2[index] + positionInPosition1 - positions1[index];
if (index < positions2.length - 1 && convertedPosition > positions2[index + 1])
convertedPosition = positions2[index + 1];
return convertedPosition;
}
};
WebInspector.FormatterSourceMap.__proto__ = WebInspector.Object;
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