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Diffstat (limited to 'alarm/node_modules/cssom/lib/parse.js')
| -rw-r--r-- | alarm/node_modules/cssom/lib/parse.js | 463 |
1 files changed, 463 insertions, 0 deletions
diff --git a/alarm/node_modules/cssom/lib/parse.js b/alarm/node_modules/cssom/lib/parse.js new file mode 100644 index 0000000..450df31 --- /dev/null +++ b/alarm/node_modules/cssom/lib/parse.js @@ -0,0 +1,463 @@ +//.CommonJS +var CSSOM = {}; +///CommonJS + + +/** + * @param {string} token + */ +CSSOM.parse = function parse(token) { + + var i = 0; + + /** + "before-selector" or + "selector" or + "atRule" or + "atBlock" or + "conditionBlock" or + "before-name" or + "name" or + "before-value" or + "value" + */ + var state = "before-selector"; + + var index; + var buffer = ""; + var valueParenthesisDepth = 0; + + var SIGNIFICANT_WHITESPACE = { + "selector": true, + "value": true, + "value-parenthesis": true, + "atRule": true, + "importRule-begin": true, + "importRule": true, + "atBlock": true, + "conditionBlock": true, + 'documentRule-begin': true + }; + + var styleSheet = new CSSOM.CSSStyleSheet(); + + // @type CSSStyleSheet|CSSMediaRule|CSSSupportsRule|CSSFontFaceRule|CSSKeyframesRule|CSSDocumentRule + var currentScope = styleSheet; + + // @type CSSMediaRule|CSSSupportsRule|CSSKeyframesRule|CSSDocumentRule + var parentRule; + + var ancestorRules = []; + var hasAncestors = false; + var prevScope; + + var name, priority="", styleRule, mediaRule, supportsRule, importRule, fontFaceRule, keyframesRule, documentRule, hostRule; + + var atKeyframesRegExp = /@(-(?:\w+-)+)?keyframes/g; + + var parseError = function(message) { + var lines = token.substring(0, i).split('\n'); + var lineCount = lines.length; + var charCount = lines.pop().length + 1; + var error = new Error(message + ' (line ' + lineCount + ', char ' + charCount + ')'); + error.line = lineCount; + /* jshint sub : true */ + error['char'] = charCount; + error.styleSheet = styleSheet; + throw error; + }; + + for (var character; (character = token.charAt(i)); i++) { + + switch (character) { + + case " ": + case "\t": + case "\r": + case "\n": + case "\f": + if (SIGNIFICANT_WHITESPACE[state]) { + buffer += character; + } + break; + + // String + case '"': + index = i + 1; + do { + index = token.indexOf('"', index) + 1; + if (!index) { + parseError('Unmatched "'); + } + } while (token[index - 2] === '\\'); + buffer += token.slice(i, index); + i = index - 1; + switch (state) { + case 'before-value': + state = 'value'; + break; + case 'importRule-begin': + state = 'importRule'; + break; + } + break; + + case "'": + index = i + 1; + do { + index = token.indexOf("'", index) + 1; + if (!index) { + parseError("Unmatched '"); + } + } while (token[index - 2] === '\\'); + buffer += token.slice(i, index); + i = index - 1; + switch (state) { + case 'before-value': + state = 'value'; + break; + case 'importRule-begin': + state = 'importRule'; + break; + } + break; + + // Comment + case "/": + if (token.charAt(i + 1) === "*") { + i += 2; + index = token.indexOf("*/", i); + if (index === -1) { + parseError("Missing */"); + } else { + i = index + 1; + } + } else { + buffer += character; + } + if (state === "importRule-begin") { + buffer += " "; + state = "importRule"; + } + break; + + // At-rule + case "@": + if (token.indexOf("@-moz-document", i) === i) { + state = "documentRule-begin"; + documentRule = new CSSOM.CSSDocumentRule(); + documentRule.__starts = i; + i += "-moz-document".length; + buffer = ""; + break; + } else if (token.indexOf("@media", i) === i) { + state = "atBlock"; + mediaRule = new CSSOM.CSSMediaRule(); + mediaRule.__starts = i; + i += "media".length; + buffer = ""; + break; + } else if (token.indexOf("@supports", i) === i) { + state = "conditionBlock"; + supportsRule = new CSSOM.CSSSupportsRule(); + supportsRule.__starts = i; + i += "supports".length; + buffer = ""; + break; + } else if (token.indexOf("@host", i) === i) { + state = "hostRule-begin"; + i += "host".length; + hostRule = new CSSOM.CSSHostRule(); + hostRule.__starts = i; + buffer = ""; + break; + } else if (token.indexOf("@import", i) === i) { + state = "importRule-begin"; + i += "import".length; + buffer += "@import"; + break; + } else if (token.indexOf("@font-face", i) === i) { + state = "fontFaceRule-begin"; + i += "font-face".length; + fontFaceRule = new CSSOM.CSSFontFaceRule(); + fontFaceRule.__starts = i; + buffer = ""; + break; + } else { + atKeyframesRegExp.lastIndex = i; + var matchKeyframes = atKeyframesRegExp.exec(token); + if (matchKeyframes && matchKeyframes.index === i) { + state = "keyframesRule-begin"; + keyframesRule = new CSSOM.CSSKeyframesRule(); + keyframesRule.__starts = i; + keyframesRule._vendorPrefix = matchKeyframes[1]; // Will come out as undefined if no prefix was found + i += matchKeyframes[0].length - 1; + buffer = ""; + break; + } else if (state === "selector") { + state = "atRule"; + } + } + buffer += character; + break; + + case "{": + if (state === "selector" || state === "atRule") { + styleRule.selectorText = buffer.trim(); + styleRule.style.__starts = i; + buffer = ""; + state = "before-name"; + } else if (state === "atBlock") { + mediaRule.media.mediaText = buffer.trim(); + + if (parentRule) { + ancestorRules.push(parentRule); + } + + currentScope = parentRule = mediaRule; + mediaRule.parentStyleSheet = styleSheet; + buffer = ""; + state = "before-selector"; + } else if (state === "conditionBlock") { + supportsRule.conditionText = buffer.trim(); + + if (parentRule) { + ancestorRules.push(parentRule); + } + + currentScope = parentRule = supportsRule; + supportsRule.parentStyleSheet = styleSheet; + buffer = ""; + state = "before-selector"; + } else if (state === "hostRule-begin") { + if (parentRule) { + ancestorRules.push(parentRule); + } + + currentScope = parentRule = hostRule; + hostRule.parentStyleSheet = styleSheet; + buffer = ""; + state = "before-selector"; + } else if (state === "fontFaceRule-begin") { + if (parentRule) { + fontFaceRule.parentRule = parentRule; + } + fontFaceRule.parentStyleSheet = styleSheet; + styleRule = fontFaceRule; + buffer = ""; + state = "before-name"; + } else if (state === "keyframesRule-begin") { + keyframesRule.name = buffer.trim(); + if (parentRule) { + ancestorRules.push(parentRule); + keyframesRule.parentRule = parentRule; + } + keyframesRule.parentStyleSheet = styleSheet; + currentScope = parentRule = keyframesRule; + buffer = ""; + state = "keyframeRule-begin"; + } else if (state === "keyframeRule-begin") { + styleRule = new CSSOM.CSSKeyframeRule(); + styleRule.keyText = buffer.trim(); + styleRule.__starts = i; + buffer = ""; + state = "before-name"; + } else if (state === "documentRule-begin") { + // FIXME: what if this '{' is in the url text of the match function? + documentRule.matcher.matcherText = buffer.trim(); + if (parentRule) { + ancestorRules.push(parentRule); + documentRule.parentRule = parentRule; + } + currentScope = parentRule = documentRule; + documentRule.parentStyleSheet = styleSheet; + buffer = ""; + state = "before-selector"; + } + break; + + case ":": + if (state === "name") { + name = buffer.trim(); + buffer = ""; + state = "before-value"; + } else { + buffer += character; + } + break; + + case "(": + if (state === 'value') { + // ie css expression mode + if (buffer.trim() === 'expression') { + var info = (new CSSOM.CSSValueExpression(token, i)).parse(); + + if (info.error) { + parseError(info.error); + } else { + buffer += info.expression; + i = info.idx; + } + } else { + state = 'value-parenthesis'; + //always ensure this is reset to 1 on transition + //from value to value-parenthesis + valueParenthesisDepth = 1; + buffer += character; + } + } else if (state === 'value-parenthesis') { + valueParenthesisDepth++; + buffer += character; + } else { + buffer += character; + } + break; + + case ")": + if (state === 'value-parenthesis') { + valueParenthesisDepth--; + if (valueParenthesisDepth === 0) state = 'value'; + } + buffer += character; + break; + + case "!": + if (state === "value" && token.indexOf("!important", i) === i) { + priority = "important"; + i += "important".length; + } else { + buffer += character; + } + break; + + case ";": + switch (state) { + case "value": + styleRule.style.setProperty(name, buffer.trim(), priority); + priority = ""; + buffer = ""; + state = "before-name"; + break; + case "atRule": + buffer = ""; + state = "before-selector"; + break; + case "importRule": + importRule = new CSSOM.CSSImportRule(); + importRule.parentStyleSheet = importRule.styleSheet.parentStyleSheet = styleSheet; + importRule.cssText = buffer + character; + styleSheet.cssRules.push(importRule); + buffer = ""; + state = "before-selector"; + break; + default: + buffer += character; + break; + } + break; + + case "}": + switch (state) { + case "value": + styleRule.style.setProperty(name, buffer.trim(), priority); + priority = ""; + /* falls through */ + case "before-name": + case "name": + styleRule.__ends = i + 1; + if (parentRule) { + styleRule.parentRule = parentRule; + } + styleRule.parentStyleSheet = styleSheet; + currentScope.cssRules.push(styleRule); + buffer = ""; + if (currentScope.constructor === CSSOM.CSSKeyframesRule) { + state = "keyframeRule-begin"; + } else { + state = "before-selector"; + } + break; + case "keyframeRule-begin": + case "before-selector": + case "selector": + // End of media/supports/document rule. + if (!parentRule) { + parseError("Unexpected }"); + } + + // Handle rules nested in @media or @supports + hasAncestors = ancestorRules.length > 0; + + while (ancestorRules.length > 0) { + parentRule = ancestorRules.pop(); + + if ( + parentRule.constructor.name === "CSSMediaRule" + || parentRule.constructor.name === "CSSSupportsRule" + ) { + prevScope = currentScope; + currentScope = parentRule; + currentScope.cssRules.push(prevScope); + break; + } + + if (ancestorRules.length === 0) { + hasAncestors = false; + } + } + + if (!hasAncestors) { + currentScope.__ends = i + 1; + styleSheet.cssRules.push(currentScope); + currentScope = styleSheet; + parentRule = null; + } + + buffer = ""; + state = "before-selector"; + break; + } + break; + + default: + switch (state) { + case "before-selector": + state = "selector"; + styleRule = new CSSOM.CSSStyleRule(); + styleRule.__starts = i; + break; + case "before-name": + state = "name"; + break; + case "before-value": + state = "value"; + break; + case "importRule-begin": + state = "importRule"; + break; + } + buffer += character; + break; + } + } + + return styleSheet; +}; + + +//.CommonJS +exports.parse = CSSOM.parse; +// The following modules cannot be included sooner due to the mutual dependency with parse.js +CSSOM.CSSStyleSheet = require("./CSSStyleSheet").CSSStyleSheet; +CSSOM.CSSStyleRule = require("./CSSStyleRule").CSSStyleRule; +CSSOM.CSSImportRule = require("./CSSImportRule").CSSImportRule; +CSSOM.CSSMediaRule = require("./CSSMediaRule").CSSMediaRule; +CSSOM.CSSSupportsRule = require("./CSSSupportsRule").CSSSupportsRule; +CSSOM.CSSFontFaceRule = require("./CSSFontFaceRule").CSSFontFaceRule; +CSSOM.CSSHostRule = require("./CSSHostRule").CSSHostRule; +CSSOM.CSSStyleDeclaration = require('./CSSStyleDeclaration').CSSStyleDeclaration; +CSSOM.CSSKeyframeRule = require('./CSSKeyframeRule').CSSKeyframeRule; +CSSOM.CSSKeyframesRule = require('./CSSKeyframesRule').CSSKeyframesRule; +CSSOM.CSSValueExpression = require('./CSSValueExpression').CSSValueExpression; +CSSOM.CSSDocumentRule = require('./CSSDocumentRule').CSSDocumentRule; +///CommonJS |