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1 /* | |
2 * Copyright (C) 2013 Google Inc. All rights reserved. | |
3 * | |
4 * Redistribution and use in source and binary forms, with or without | |
5 * modification, are permitted provided that the following conditions are | |
6 * met: | |
7 * | |
8 * * Redistributions of source code must retain the above copyright | |
9 * notice, this list of conditions and the following disclaimer. | |
10 * * Redistributions in binary form must reproduce the above | |
11 * copyright notice, this list of conditions and the following disclaimer | |
12 * in the documentation and/or other materials provided with the | |
13 * distribution. | |
14 * * Neither the name of Google Inc. nor the names of its | |
15 * contributors may be used to endorse or promote products derived from | |
16 * this software without specific prior written permission. | |
17 * | |
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
29 */ | |
30 | |
31 function CSSFormattedContentBuilder(content, mapping, originalOffset, formattedO ffset, indentString) | |
pfeldman
2013/09/30 12:07:26
Please annotate.
apavlov
2013/09/30 12:50:29
Done.
| |
32 { | |
33 this._originalContent = content; | |
34 this._originalOffset = originalOffset; | |
35 this._lastOriginalPosition = 0; | |
36 | |
37 this._formattedContent = []; | |
38 this._formattedContentLength = 0; | |
39 this._formattedOffset = formattedOffset; | |
40 this._lastFormattedPosition = 0; | |
41 | |
42 this._mapping = mapping; | |
43 | |
44 this._lineNumber = 0; | |
45 this._nestingLevel = 0; | |
46 this._needNewLines = 0; | |
47 this._atLineStart = true; | |
48 this._indentString = indentString; | |
49 this._cachedIndents = {}; | |
50 } | |
51 | |
52 CSSFormattedContentBuilder.prototype = { | |
53 addToken: function(token, startPosition, startLine, startColumn) | |
54 { | |
55 if ((this._isWhitespaceRun || this._atLineStart) && /^\s+$/.test(token)) | |
56 return; | |
57 | |
58 if (this._isWhitespaceRun && this._lineNumber === startLine && !this._ne edNewLines) | |
59 this._addText(" "); | |
60 | |
61 this._isWhitespaceRun = false; | |
62 this._atLineStart = false; | |
63 | |
64 while (this._lineNumber < startLine) { | |
65 this._addText("\n"); | |
66 this._addIndent(); | |
67 this._needNewLines = 0; | |
68 this._lineNumber += 1; | |
69 this._atLineStart = true; | |
70 } | |
71 | |
72 if (this._needNewLines) { | |
73 this.flushNewLines(); | |
74 this._addIndent(); | |
75 this._atLineStart = true; | |
76 } | |
77 | |
78 this._addMappingIfNeeded(startPosition); | |
79 this._addText(token); | |
80 this._lineNumber = startLine; | |
81 }, | |
82 | |
83 addSpace: function() | |
84 { | |
85 if (this._isWhitespaceRun) | |
86 return; | |
87 this._isWhitespaceRun = true; | |
88 }, | |
89 | |
90 addNewLine: function() | |
91 { | |
92 ++this._needNewLines; | |
93 }, | |
94 | |
95 flushNewLines: function(atLeastOne) | |
96 { | |
97 var newLineCount = atLeastOne && !this._needNewLines ? 1 : this._needNew Lines; | |
98 if (newLineCount) | |
99 this._isWhitespaceRun = false; | |
100 for (var i = 0; i < newLineCount; ++i) | |
101 this._addText("\n"); | |
102 this._needNewLines = 0; | |
103 }, | |
104 | |
105 increaseNestingLevel: function() | |
106 { | |
107 this._nestingLevel += 1; | |
108 }, | |
109 | |
110 decreaseNestingLevel: function(addNewline) | |
111 { | |
112 if (this._nestingLevel) | |
113 this._nestingLevel -= 1; | |
114 if (addNewline) | |
115 this.addNewLine(); | |
116 }, | |
117 | |
118 content: function() | |
119 { | |
120 return this._formattedContent.join(""); | |
121 }, | |
122 | |
123 mapping: function() | |
124 { | |
125 return { original: this._originalPositions, formatted: this._formattedPo sitions }; | |
126 }, | |
127 | |
128 _addIndent: function() | |
129 { | |
130 if (this._cachedIndents[this._nestingLevel]) { | |
131 this._addText(this._cachedIndents[this._nestingLevel]); | |
132 return; | |
133 } | |
134 | |
135 var fullIndent = ""; | |
136 for (var i = 0; i < this._nestingLevel; ++i) | |
137 fullIndent += this._indentString; | |
138 this._addText(fullIndent); | |
139 | |
140 // Cache a maximum of 20 nesting level indents. | |
141 if (this._nestingLevel <= 20) | |
142 this._cachedIndents[this._nestingLevel] = fullIndent; | |
143 }, | |
144 | |
145 _addText: function(text) | |
146 { | |
147 if (!text) | |
148 return; | |
149 this._formattedContent.push(text); | |
150 this._formattedContentLength += text.length; | |
151 }, | |
152 | |
153 _addMappingIfNeeded: function(originalPosition) | |
154 { | |
155 if (originalPosition - this._lastOriginalPosition === this._formattedCon tentLength - this._lastFormattedPosition) | |
156 return; | |
157 this._mapping.original.push(this._originalOffset + originalPosition); | |
158 this._lastOriginalPosition = originalPosition; | |
159 this._mapping.formatted.push(this._formattedOffset + this._formattedCont entLength); | |
160 this._lastFormattedPosition = this._formattedContentLength; | |
161 } | |
162 } | |
163 | |
164 function findAll(text, string) | |
165 { | |
166 var matches = []; | |
167 var i = text.indexOf(string); | |
168 while (i !== -1) { | |
169 matches.push(i); | |
170 i = text.indexOf(string, i + string.length); | |
171 } | |
172 return matches; | |
173 } | |
174 | |
175 function lineEndings(text) | |
176 { | |
177 var lineEndings = text.findAll("\n"); | |
178 lineEndings.push(text.length); | |
179 return lineEndings; | |
180 } | |
181 | |
182 function CSSFormatter(content, builder) | |
pfeldman
2013/09/30 12:07:26
Please define public class first. You also want to
apavlov
2013/09/30 12:50:29
Done.
| |
183 { | |
184 this._content = content; | |
185 this._builder = builder; | |
186 this._lastLine = -1; | |
187 this._state = {}; | |
188 } | |
189 | |
190 CSSFormatter.prototype = { | |
191 format: function() | |
192 { | |
193 this._lineEndings = lineEndings(this._content); | |
194 var tokenize = WebInspector.CodeMirrorUtils.createTokenizer("text/css"); | |
195 var lines = this._content.split("\n"); | |
196 | |
197 for (var i = 0; i < lines.length; ++i) { | |
198 var line = lines[i]; | |
199 tokenize(line, this._tokenCallback.bind(this, i)); | |
200 } | |
201 this._builder.flushNewLines(true); | |
202 }, | |
203 | |
204 _tokenCallback: function(startLine, token, type, startColumn) | |
205 { | |
206 if (startLine !== this._lastLine) | |
207 this._state.eatWhitespace = true; | |
208 if (/^css-property/.test(type) && !this._state.inPropertyValue) | |
209 this._state.seenProperty = true; | |
210 this._lastLine = startLine; | |
211 var isWhitespace = /^\s+$/.test(token); | |
212 if (isWhitespace) { | |
213 if (!this._state.eatWhitespace) | |
214 this._builder.addSpace(); | |
215 return; | |
216 } | |
217 this._state.eatWhitespace = false; | |
218 if (token === "\n") | |
219 return; | |
220 | |
221 if (token !== "}") { | |
222 if (this._state.afterClosingBrace) | |
223 this._builder.addNewLine(); | |
224 this._state.afterClosingBrace = false; | |
225 } | |
226 var startPosition = (startLine ? this._lineEndings[startLine - 1] : 0) + startColumn; | |
227 if (token === "}") { | |
228 if (this._state.inPropertyValue) | |
229 this._builder.addNewLine(); | |
230 this._builder.decreaseNestingLevel(); | |
231 this._state.afterClosingBrace = true; | |
232 this._state.inPropertyValue = false; | |
233 } else if (token === ":" && !this._state.inPropertyValue && this._state. seenProperty) { | |
234 this._builder.addToken(token, startPosition, startLine, startColumn) ; | |
235 this._builder.addSpace(); | |
236 this._state.eatWhitespace = true; | |
237 this._state.inPropertyValue = true; | |
238 this._state.seenProperty = false; | |
239 return; | |
240 } else if (token === "{") { | |
241 this._builder.addSpace(); | |
242 this._builder.addToken(token, startPosition, startLine, startColumn) ; | |
243 this._builder.addNewLine(); | |
244 this._builder.increaseNestingLevel(); | |
245 return; | |
246 } | |
247 | |
248 this._builder.addToken(token, startPosition, startLine, startColumn); | |
249 | |
250 if (type === "css-comment" && !this._state.inPropertyValue && !this._sta te.seenProperty) | |
251 this._builder.addNewLine(); | |
252 if (token === ";" && this._state.inPropertyValue) { | |
253 this._state.inPropertyValue = false; | |
254 this._builder.addNewLine(); | |
255 } else if (token === "}") { | |
256 this._builder.addNewLine(); | |
257 } | |
258 } | |
259 } | |
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