| /* |
| * Copyright (C) 2013 Google 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: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * 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. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT |
| * OWNER OR 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. |
| */ |
| |
| /** |
| * @constructor |
| * @param {string} content |
| * @param {!FormatterWorker.CSSFormattedContentBuilder} builder |
| */ |
| FormatterWorker.CSSFormatter = function(content, builder) |
| { |
| this._content = content; |
| this._builder = builder; |
| this._lastLine = -1; |
| this._state = {}; |
| } |
| |
| FormatterWorker.CSSFormatter.prototype = { |
| format: function() |
| { |
| this._lineEndings = this._lineEndings(this._content); |
| var tokenize = WebInspector.CodeMirrorUtils.createTokenizer("text/css"); |
| var lines = this._content.split("\n"); |
| |
| for (var i = 0; i < lines.length; ++i) { |
| var line = lines[i]; |
| tokenize(line, this._tokenCallback.bind(this, i)); |
| } |
| this._builder.flushNewLines(true); |
| }, |
| |
| /** |
| * @param {string} text |
| */ |
| _lineEndings: function(text) |
| { |
| var lineEndings = []; |
| var i = text.indexOf("\n"); |
| while (i !== -1) { |
| lineEndings.push(i); |
| i = text.indexOf("\n", i + 1); |
| } |
| lineEndings.push(text.length); |
| return lineEndings; |
| }, |
| |
| /** |
| * @param {number} startLine |
| * @param {string} token |
| * @param {string} type |
| * @param {number} startColumn |
| */ |
| _tokenCallback: function(startLine, token, type, startColumn) |
| { |
| if (startLine !== this._lastLine) |
| this._state.eatWhitespace = true; |
| if (/^css-property/.test(type) && !this._state.inPropertyValue) |
| this._state.seenProperty = true; |
| this._lastLine = startLine; |
| var isWhitespace = /^\s+$/.test(token); |
| if (isWhitespace) { |
| if (!this._state.eatWhitespace) |
| this._builder.addSpace(); |
| return; |
| } |
| this._state.eatWhitespace = false; |
| if (token === "\n") |
| return; |
| |
| if (token !== "}") { |
| if (this._state.afterClosingBrace) |
| this._builder.addNewLine(); |
| this._state.afterClosingBrace = false; |
| } |
| var startPosition = (startLine ? this._lineEndings[startLine - 1] : 0) + startColumn; |
| if (token === "}") { |
| if (this._state.inPropertyValue) |
| this._builder.addNewLine(); |
| this._builder.decreaseNestingLevel(); |
| this._state.afterClosingBrace = true; |
| this._state.inPropertyValue = false; |
| } else if (token === ":" && !this._state.inPropertyValue && this._state.seenProperty) { |
| this._builder.addToken(token, startPosition, startLine, startColumn); |
| this._builder.addSpace(); |
| this._state.eatWhitespace = true; |
| this._state.inPropertyValue = true; |
| this._state.seenProperty = false; |
| return; |
| } else if (token === "{") { |
| this._builder.addSpace(); |
| this._builder.addToken(token, startPosition, startLine, startColumn); |
| this._builder.addNewLine(); |
| this._builder.increaseNestingLevel(); |
| return; |
| } |
| |
| this._builder.addToken(token, startPosition, startLine, startColumn); |
| |
| if (type === "css-comment" && !this._state.inPropertyValue && !this._state.seenProperty) |
| this._builder.addNewLine(); |
| if (token === ";" && this._state.inPropertyValue) { |
| this._state.inPropertyValue = false; |
| this._builder.addNewLine(); |
| } else if (token === "}") { |
| this._builder.addNewLine(); |
| } |
| } |
| } |
| |
| /** |
| * @constructor |
| * @param {string} content |
| * @param {!{original: !Array.<number>, formatted: !Array.<number>}} mapping |
| * @param {number} originalOffset |
| * @param {number} formattedOffset |
| * @param {string} indentString |
| */ |
| FormatterWorker.CSSFormattedContentBuilder = function(content, mapping, originalOffset, formattedOffset, indentString) |
| { |
| this._originalContent = content; |
| this._originalOffset = originalOffset; |
| this._lastOriginalPosition = 0; |
| |
| this._formattedContent = []; |
| this._formattedContentLength = 0; |
| this._formattedOffset = formattedOffset; |
| this._lastFormattedPosition = 0; |
| |
| this._mapping = mapping; |
| |
| this._lineNumber = 0; |
| this._nestingLevel = 0; |
| this._needNewLines = 0; |
| this._atLineStart = true; |
| this._indentString = indentString; |
| this._cachedIndents = {}; |
| } |
| |
| FormatterWorker.CSSFormattedContentBuilder.prototype = { |
| /** |
| * @param {string} token |
| * @param {number} startPosition |
| * @param {number} startLine |
| * @param {number} startColumn |
| */ |
| addToken: function(token, startPosition, startLine, startColumn) |
| { |
| if ((this._isWhitespaceRun || this._atLineStart) && /^\s+$/.test(token)) |
| return; |
| |
| if (this._isWhitespaceRun && this._lineNumber === startLine && !this._needNewLines) |
| this._addText(" "); |
| |
| this._isWhitespaceRun = false; |
| this._atLineStart = false; |
| |
| while (this._lineNumber < startLine) { |
| this._addText("\n"); |
| this._addIndent(); |
| this._needNewLines = 0; |
| this._lineNumber += 1; |
| this._atLineStart = true; |
| } |
| |
| if (this._needNewLines) { |
| this.flushNewLines(); |
| this._addIndent(); |
| this._atLineStart = true; |
| } |
| |
| this._addMappingIfNeeded(startPosition); |
| this._addText(token); |
| this._lineNumber = startLine; |
| }, |
| |
| addSpace: function() |
| { |
| if (this._isWhitespaceRun) |
| return; |
| this._isWhitespaceRun = true; |
| }, |
| |
| addNewLine: function() |
| { |
| ++this._needNewLines; |
| }, |
| |
| /** |
| * @param {boolean=} atLeastOne |
| */ |
| flushNewLines: function(atLeastOne) |
| { |
| var newLineCount = atLeastOne && !this._needNewLines ? 1 : this._needNewLines; |
| if (newLineCount) |
| this._isWhitespaceRun = false; |
| for (var i = 0; i < newLineCount; ++i) |
| this._addText("\n"); |
| this._needNewLines = 0; |
| }, |
| |
| increaseNestingLevel: function() |
| { |
| this._nestingLevel += 1; |
| }, |
| |
| /** |
| * @param {boolean=} addNewline |
| */ |
| decreaseNestingLevel: function(addNewline) |
| { |
| if (this._nestingLevel) |
| this._nestingLevel -= 1; |
| if (addNewline) |
| this.addNewLine(); |
| }, |
| |
| /** |
| * @return {string} |
| */ |
| content: function() |
| { |
| return this._formattedContent.join(""); |
| }, |
| |
| _addIndent: function() |
| { |
| if (this._cachedIndents[this._nestingLevel]) { |
| this._addText(this._cachedIndents[this._nestingLevel]); |
| return; |
| } |
| |
| var fullIndent = ""; |
| for (var i = 0; i < this._nestingLevel; ++i) |
| fullIndent += this._indentString; |
| this._addText(fullIndent); |
| |
| // Cache a maximum of 20 nesting level indents. |
| if (this._nestingLevel <= 20) |
| this._cachedIndents[this._nestingLevel] = fullIndent; |
| }, |
| |
| /** |
| * @param {string} text |
| */ |
| _addText: function(text) |
| { |
| if (!text) |
| return; |
| this._formattedContent.push(text); |
| this._formattedContentLength += text.length; |
| }, |
| |
| /** |
| * @param {number} originalPosition |
| */ |
| _addMappingIfNeeded: function(originalPosition) |
| { |
| if (originalPosition - this._lastOriginalPosition === this._formattedContentLength - this._lastFormattedPosition) |
| return; |
| this._mapping.original.push(this._originalOffset + originalPosition); |
| this._lastOriginalPosition = originalPosition; |
| this._mapping.formatted.push(this._formattedOffset + this._formattedContentLength); |
| this._lastFormattedPosition = this._formattedContentLength; |
| } |
| } |