1/* 2 * Copyright (C) 2013 Apple 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 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26// In the inspector token types have been modified to include extra mode information 27// after the actual token type. So we can't do token === "foo". So instead we do 28// /\bfoo\b/.test(token). 29 30CodeMirror.extendMode("javascript", { 31 shouldHaveSpaceBeforeToken: function(lastToken, lastContent, token, state, content, isComment) 32 { 33 if (!token) { 34 if (content === "(") // Most keywords like "if (" but not "function(" or "typeof(". 35 return lastToken && /\bkeyword\b/.test(lastToken) && (lastContent !== "function" && lastContent !== "typeof" && lastContent !== "instanceof"); 36 if (content === ":") // Ternary. 37 return (state.lexical.type === "stat" || state.lexical.type === ")"); 38 return false; 39 } 40 41 if (isComment) 42 return true; 43 44 if (/\boperator\b/.test(token)) { 45 if (content === "!") // Unary ! should not be confused with "!=". 46 return false; 47 return "+-/*&&||!===+=-=>=<=?".indexOf(content) >= 0; // Operators. 48 } 49 50 if (/\bkeyword\b/.test(token)) { // Most keywords require spaces before them, unless a '}' can come before it. 51 if (content === "else" || content === "catch" || content === "finally") 52 return lastContent === "}"; 53 return false; 54 } 55 56 return false; 57 }, 58 59 shouldHaveSpaceAfterLastToken: function(lastToken, lastContent, token, state, content, isComment) 60 { 61 if (lastToken && /\bkeyword\b/.test(lastToken)) { // Most keywords require spaces after them, unless a '{' or ';' can come after it. 62 if (lastContent === "else") 63 return true; 64 if (lastContent === "catch") 65 return true; 66 if (lastContent === "return") 67 return content !== ";"; 68 if (lastContent === "throw") 69 return true; 70 if (lastContent === "try") 71 return true; 72 if (lastContent === "finally") 73 return true; 74 if (lastContent === "do") 75 return true; 76 return false; 77 } 78 79 if (lastToken && /\bcomment\b/.test(lastToken)) // Embedded /* comment */. 80 return true; 81 if (lastContent === ")") // "){". 82 return content === "{"; 83 if (lastContent === ";") // In for loop. 84 return state.lexical.type === ")"; 85 if (lastContent === "!") // Unary ! should not be confused with "!=". 86 return false; 87 88 return ",+-/*&&||:!===+=-=>=<=?".indexOf(lastContent) >= 0; // Operators. 89 }, 90 91 newlinesAfterToken: function(lastToken, lastContent, token, state, content, isComment) 92 { 93 if (!token) { 94 if (content === ",") // In object literals, like in {a:1,b:2}, but not in param lists or vardef lists. 95 return state.lexical.type === "}" ? 1 : 0; 96 if (content === ";") // Everywhere except in for loop conditions. 97 return state.lexical.type !== ")" ? 1 : 0; 98 if (content === ":" && state.lexical.type === "}" && state.lexical.prev && state.lexical.prev.type === "form") // Switch case/default. 99 return 1; 100 return content.length === 1 && "{}".indexOf(content) >= 0 ? 1 : 0; // After braces. 101 } 102 103 if (isComment) 104 return 1; 105 106 return 0; 107 }, 108 109 removeLastNewline: function(lastToken, lastContent, token, state, content, isComment, firstTokenOnLine) 110 { 111 if (!token) { 112 if (content === "}") // "{}". 113 return lastContent === "{"; 114 if (content === ";") // "x = {};" or ";;". 115 return "};".indexOf(lastContent) >= 0; 116 if (content === ":") // Ternary. 117 return lastContent === "}" && (state.lexical.type === "stat" || state.lexical.type === ")"); 118 if (",().".indexOf(content) >= 0) // "})", "}.bind", "function() { ... }()", or "}, false)". 119 return lastContent === "}"; 120 return false; 121 } 122 123 if (isComment) { // Comment after semicolon. 124 if (!firstTokenOnLine && lastContent === ";") 125 return true; 126 return false; 127 } 128 129 if (/\bkeyword\b/.test(token)) { 130 if (content === "else" || content === "catch" || content === "finally") // "} else", "} catch", "} finally" 131 return lastContent === "}"; 132 return false; 133 } 134 135 return false; 136 }, 137 138 indentAfterToken: function(lastToken, lastContent, token, state, content, isComment) 139 { 140 return content === "{" || content === "case" || content === "default"; 141 }, 142 143 newlineBeforeToken: function(lastToken, lastContent, token, state, content, isComment) 144 { 145 if (state._jsPrettyPrint.shouldIndent) 146 return true; 147 148 return content === "}" && lastContent !== "{"; // "{}" 149 }, 150 151 indentBeforeToken: function(lastToken, lastContent, token, state, content, isComment) 152 { 153 if (state._jsPrettyPrint.shouldIndent) 154 return true; 155 156 return false; 157 }, 158 159 dedentsBeforeToken: function(lastToken, lastContent, token, state, content, isComment) 160 { 161 var dedent = 0; 162 163 if (state._jsPrettyPrint.shouldDedent) 164 dedent += state._jsPrettyPrint.dedentSize; 165 166 if (!token && content === "}") 167 dedent += 1; 168 else if (token && /\bkeyword\b/.test(token) && (content === "case" || content === "default")) 169 dedent += 1; 170 171 return dedent; 172 }, 173 174 modifyStateForTokenPre: function(lastToken, lastContent, token, state, content, isComment) 175 { 176 if (!state._jsPrettyPrint) { 177 state._jsPrettyPrint = { 178 indentCount: 0, // How far have we indented because of single statement blocks. 179 shouldIndent: false, // Signal we should indent on entering a single statement block. 180 shouldDedent: false, // Signal we should dedent on leaving a single statement block. 181 dedentSize: 0, // How far we should dedent when leaving a single statement block. 182 lastIfIndentCount: 0, // Keep track of the indent the last time we saw an if without braces. 183 openBraceStartMarkers: [], // Keep track of non-single statement blocks. 184 openBraceTrackingCount: -1, // Keep track of "{" and "}" in non-single statement blocks. 185 }; 186 } 187 188 // - Entering: 189 // - Preconditions: 190 // - last lexical was a "form" we haven't encountered before 191 // - last content was ")", "else", or "do" 192 // - current lexical is not ")" (in an expression or condition) 193 // - Cases: 194 // 1. "{" 195 // - indent +0 196 // - save this indent size so when we encounter the "}" we know how far to dedent 197 // 2. "else if" 198 // - indent +0 and do not signal to add a newline and indent 199 // - mark the last if location so when we encounter an "else" we know how far to dedent 200 // - mark the lexical state so we know we are inside a single statement block 201 // 3. Token without brace. 202 // - indent +1 and signal to add a newline and indent 203 // - mark the last if location so when we encounter an "else" we know how far to dedent 204 // - mark the lexical state so we know we are inside a single statement block 205 if (!isComment && state.lexical.prev && state.lexical.prev.type === "form" && !state.lexical.prev._jsPrettyPrintMarker && (lastContent === ")" || lastContent === "else" || lastContent === "do") && (state.lexical.type !== ")")) { 206 if (content === "{") { 207 // Save the state at the opening brace so we can return to it when we see "}". 208 var savedState = {indentCount:state._jsPrettyPrint.indentCount, openBraceTrackingCount:state._jsPrettyPrint.openBraceTrackingCount}; 209 state._jsPrettyPrint.openBraceStartMarkers.push(savedState); 210 state._jsPrettyPrint.openBraceTrackingCount = 1; 211 } else if (state.lexical.type !== "}") { 212 // Increase the indent count. Signal for a newline and indent if needed. 213 if (!(lastContent === "else" && content === "if")) { 214 state._jsPrettyPrint.indentCount++; 215 state._jsPrettyPrint.shouldIndent = true; 216 } 217 state.lexical.prev._jsPrettyPrintMarker = true; 218 if (state._jsPrettyPrint.enteringIf) 219 state._jsPrettyPrint.lastIfIndentCount = state._jsPrettyPrint.indentCount - 1; 220 } 221 } 222 223 // - Leaving: 224 // - Preconditions: 225 // - we must be indented 226 // - ignore ";", wait for the next token instead. 227 // - Cases: 228 // 1. "else" 229 // - dedent to the last "if" 230 // 2. "}" and all braces we saw are balanced 231 // - dedent to the last "{" 232 // 3. Token without a marker on the stack 233 // - dedent all the way 234 else if (state._jsPrettyPrint.indentCount) { 235 console.assert(!state._jsPrettyPrint.shouldDedent); 236 console.assert(!state._jsPrettyPrint.dedentSize); 237 238 // Track "{" and "}" to know when the "}" is really closing a block. 239 if (!isComment) { 240 if (content === "{") 241 state._jsPrettyPrint.openBraceTrackingCount++; 242 else if (content === "}") 243 state._jsPrettyPrint.openBraceTrackingCount--; 244 } 245 246 if (content === ";") { 247 // Ignore. 248 } else if (content === "else") { 249 // Dedent to the last "if". 250 if (lastContent !== "}") { 251 state._jsPrettyPrint.shouldDedent = true; 252 state._jsPrettyPrint.dedentSize = state._jsPrettyPrint.indentCount - state._jsPrettyPrint.lastIfIndentCount; 253 state._jsPrettyPrint.lastIfIndentCount = 0; 254 } 255 } else if (content === "}" && !state._jsPrettyPrint.openBraceTrackingCount && state._jsPrettyPrint.openBraceStartMarkers.length) { 256 // Dedent to the last "{". 257 var savedState = state._jsPrettyPrint.openBraceStartMarkers.pop(); 258 state._jsPrettyPrint.shouldDedent = true; 259 state._jsPrettyPrint.dedentSize = state._jsPrettyPrint.indentCount - savedState.indentCount; 260 state._jsPrettyPrint.openBraceTrackingCount = savedState.openBraceTrackingCount; 261 } else { 262 // Dedent all the way. 263 var shouldDedent = true; 264 var lexical = state.lexical.prev; 265 while (lexical) { 266 if (lexical._jsPrettyPrintMarker) { 267 shouldDedent = false; 268 break; 269 } 270 lexical = lexical.prev; 271 } 272 if (shouldDedent) { 273 state._jsPrettyPrint.shouldDedent = true; 274 state._jsPrettyPrint.dedentSize = state._jsPrettyPrint.indentCount; 275 } 276 } 277 } 278 279 // Signal for when we will be entering an if. 280 if (token && state.lexical.type === "form" && state.lexical.prev && state.lexical.prev !== "form" && /\bkeyword\b/.test(token)) 281 state._jsPrettyPrint.enteringIf = (content === "if"); 282 }, 283 284 modifyStateForTokenPost: function(lastToken, lastContent, token, state, content, isComment) 285 { 286 if (state._jsPrettyPrint.shouldIndent) 287 state._jsPrettyPrint.shouldIndent = false; 288 289 if (state._jsPrettyPrint.shouldDedent) { 290 state._jsPrettyPrint.indentCount -= state._jsPrettyPrint.dedentSize; 291 state._jsPrettyPrint.dedentSize = 0; 292 state._jsPrettyPrint.shouldDedent = false; 293 } 294 } 295}); 296 297CodeMirror.extendMode("css", { 298 shouldHaveSpaceBeforeToken: function(lastToken, lastContent, token, state, content, isComment) 299 { 300 if (!token) { 301 if (content === "{") 302 return true; 303 return false; 304 } 305 306 if (isComment) 307 return true; 308 309 if (/\bkeyword\b/.test(token)) { 310 if (content.charAt(0) === "!") // "!important". 311 return true; 312 return false; 313 } 314 315 return false; 316 }, 317 318 shouldHaveSpaceAfterLastToken: function(lastToken, lastContent, token, state, content, isComment) 319 { 320 if (!lastToken) { 321 if (lastContent === ",") 322 return true; 323 if (lastContent === ":") // Space in "prop: value" but not in a selectors "a:link" or "div::after" or media queries "(max-device-width:480px)". 324 return state.state === "prop"; 325 return false; 326 } 327 328 if (/\bcomment\b/.test(lastToken)) 329 return true; 330 331 return false; 332 }, 333 334 newlinesAfterToken: function(lastToken, lastContent, token, state, content, isComment) 335 { 336 if (!token) { 337 if (content === ";") 338 return 1; 339 if (content === ",") { // "a,b,c,...,z{}" rule list at top level or in @media top level and only if the line length will be large. 340 if ((state.state === "top" || state.state === "media") && state._cssPrettyPrint.lineLength > 60) { 341 state._cssPrettyPrint.lineLength = 0; 342 return 1; 343 } 344 return 0; 345 } 346 if (content === "{") 347 return 1; 348 if (content === "}") // 2 newlines between rule declarations. 349 return 2; 350 return 0; 351 } 352 353 if (isComment) 354 return 1; 355 356 return 0; 357 }, 358 359 removeLastNewline: function(lastToken, lastContent, token, state, content, isComment, firstTokenOnLine) 360 { 361 if (isComment) { // Comment after semicolon. 362 if (!firstTokenOnLine && lastContent === ";") 363 return true; 364 return false; 365 } 366 367 return content === "}" && (lastContent === "{" || lastContent === "}"); // "{}" and "}\n}" when closing @media. 368 }, 369 370 indentAfterToken: function(lastToken, lastContent, token, state, content, isComment) 371 { 372 return content === "{"; 373 }, 374 375 newlineBeforeToken: function(lastToken, lastContent, token, state, content, isComment) 376 { 377 return content === "}" && (lastContent !== "{" && lastContent !== "}"); // "{}" and "}\n}" when closing @media. 378 }, 379 380 indentBeforeToken: function(lastToken, lastContent, token, state, content, isComment) 381 { 382 return false; 383 }, 384 385 dedentsBeforeToken: function(lastToken, lastContent, token, state, content, isComment) 386 { 387 return content === "}" ? 1 : 0; 388 }, 389 390 modifyStateForTokenPost: function(lastToken, lastContent, token, state, content, isComment) 391 { 392 if (!state._cssPrettyPrint) 393 state._cssPrettyPrint = {lineLength: 0}; 394 395 // In order insert newlines in selector lists we need keep track of the length of the current line. 396 // This isn't exact line length, only the builder knows that, but it is good enough to get an idea. 397 // If we are at a top level, keep track of the current line length, otherwise we reset to 0. 398 if (state.state === "top" || state.state === "media") 399 state._cssPrettyPrint.lineLength += content.length; 400 else 401 state._cssPrettyPrint.lineLength = 0; 402 } 403}); 404