| /* |
| * 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. |
| */ |
| |
| /** |
| * @unrestricted |
| */ |
| export class CSSFormatter { |
| /** |
| * @param {!FormatterWorker.FormattedContentBuilder} builder |
| */ |
| constructor(builder) { |
| this._builder = builder; |
| } |
| |
| /** |
| * @param {string} text |
| * @param {!Array.<number>} lineEndings |
| * @param {number} fromOffset |
| * @param {number} toOffset |
| */ |
| format(text, lineEndings, fromOffset, toOffset) { |
| this._lineEndings = lineEndings; |
| this._fromOffset = fromOffset; |
| this._toOffset = toOffset; |
| this._lastLine = -1; |
| this._state = {}; |
| const tokenize = FormatterWorker.createTokenizer('text/css'); |
| const oldEnforce = this._builder.setEnforceSpaceBetweenWords(false); |
| tokenize(text.substring(this._fromOffset, this._toOffset), this._tokenCallback.bind(this)); |
| this._builder.setEnforceSpaceBetweenWords(oldEnforce); |
| } |
| |
| /** |
| * @param {string} token |
| * @param {?string} type |
| * @param {number} startPosition |
| */ |
| _tokenCallback(token, type, startPosition) { |
| startPosition += this._fromOffset; |
| const startLine = this._lineEndings.lowerBound(startPosition); |
| if (startLine !== this._lastLine) { |
| this._state.eatWhitespace = true; |
| } |
| if (/^property/.test(type) && !this._state.inPropertyValue) { |
| this._state.seenProperty = true; |
| } |
| this._lastLine = startLine; |
| const isWhitespace = /^\s+$/.test(token); |
| if (isWhitespace) { |
| if (!this._state.eatWhitespace) { |
| this._builder.addSoftSpace(); |
| } |
| return; |
| } |
| this._state.eatWhitespace = false; |
| if (token === '\n') { |
| return; |
| } |
| |
| if (token !== '}') { |
| if (this._state.afterClosingBrace) { |
| this._builder.addNewLine(true); |
| } |
| this._state.afterClosingBrace = false; |
| } |
| 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); |
| this._builder.addSoftSpace(); |
| this._state.eatWhitespace = true; |
| this._state.inPropertyValue = true; |
| this._state.seenProperty = false; |
| return; |
| } else if (token === '{') { |
| this._builder.addSoftSpace(); |
| this._builder.addToken(token, startPosition); |
| this._builder.addNewLine(); |
| this._builder.increaseNestingLevel(); |
| return; |
| } |
| |
| this._builder.addToken(token, startPosition); |
| |
| if (type === '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(); |
| } |
| } |
| } |
| |
| /* Legacy exported object */ |
| self.FormatterWorker = self.FormatterWorker || {}; |
| |
| /* Legacy exported object */ |
| FormatterWorker = FormatterWorker || {}; |
| |
| /** @constructor */ |
| FormatterWorker.CSSFormatter = CSSFormatter; |