The smoke rises

public/js/lib/codemirror/mode/sass/sass.js

@@ -0,0 +1,327 @@
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: http://codemirror.net/LICENSE
+
+(function(mod) {
+  if (typeof exports == "object" && typeof module == "object") // CommonJS
+    mod(require("../../lib/codemirror"));
+  else if (typeof define == "function" && define.amd) // AMD
+    define(["../../lib/codemirror"], mod);
+  else // Plain browser env
+    mod(CodeMirror);
+})(function(CodeMirror) {
+"use strict";
+
+CodeMirror.defineMode("sass", function(config) {
+  function tokenRegexp(words) {
+    return new RegExp("^" + words.join("|"));
+  }
+
+  var keywords = ["true", "false", "null", "auto"];
+  var keywordsRegexp = new RegExp("^" + keywords.join("|"));
+
+  var operators = ["\\(", "\\)", "=", ">", "<", "==", ">=", "<=", "\\+", "-", "\\!=", "/", "\\*", "%", "and", "or", "not"];
+  var opRegexp = tokenRegexp(operators);
+
+  var pseudoElementsRegexp = /^::?[\w\-]+/;
+
+  function urlTokens(stream, state) {
+    var ch = stream.peek();
+
+    if (ch === ")") {
+      stream.next();
+      state.tokenizer = tokenBase;
+      return "operator";
+    } else if (ch === "(") {
+      stream.next();
+      stream.eatSpace();
+
+      return "operator";
+    } else if (ch === "'" || ch === '"') {
+      state.tokenizer = buildStringTokenizer(stream.next());
+      return "string";
+    } else {
+      state.tokenizer = buildStringTokenizer(")", false);
+      return "string";
+    }
+  }
+  function comment(indentation, multiLine) {
+    return function(stream, state) {
+      if (stream.sol() && stream.indentation() <= indentation) {
+        state.tokenizer = tokenBase;
+        return tokenBase(stream, state);
+      }
+
+      if (multiLine && stream.skipTo("*/")) {
+        stream.next();
+        stream.next();
+        state.tokenizer = tokenBase;
+      } else {
+        stream.next();
+      }
+
+      return "comment";
+    };
+  }
+
+  function buildStringTokenizer(quote, greedy) {
+    if(greedy == null) { greedy = true; }
+
+    function stringTokenizer(stream, state) {
+      var nextChar = stream.next();
+      var peekChar = stream.peek();
+      var previousChar = stream.string.charAt(stream.pos-2);
+
+      var endingString = ((nextChar !== "\\" && peekChar === quote) || (nextChar === quote && previousChar !== "\\"));
+
+      if (endingString) {
+        if (nextChar !== quote && greedy) { stream.next(); }
+        state.tokenizer = tokenBase;
+        return "string";
+      } else if (nextChar === "#" && peekChar === "{") {
+        state.tokenizer = buildInterpolationTokenizer(stringTokenizer);
+        stream.next();
+        return "operator";
+      } else {
+        return "string";
+      }
+    }
+
+    return stringTokenizer;
+  }
+
+  function buildInterpolationTokenizer(currentTokenizer) {
+    return function(stream, state) {
+      if (stream.peek() === "}") {
+        stream.next();
+        state.tokenizer = currentTokenizer;
+        return "operator";
+      } else {
+        return tokenBase(stream, state);
+      }
+    };
+  }
+
+  function indent(state) {
+    if (state.indentCount == 0) {
+      state.indentCount++;
+      var lastScopeOffset = state.scopes[0].offset;
+      var currentOffset = lastScopeOffset + config.indentUnit;
+      state.scopes.unshift({ offset:currentOffset });
+    }
+  }
+
+  function dedent(state) {
+    if (state.scopes.length == 1) return;
+
+    state.scopes.shift();
+  }
+
+  function tokenBase(stream, state) {
+    var ch = stream.peek();
+
+    // Comment
+    if (stream.match("/*")) {
+      state.tokenizer = comment(stream.indentation(), true);
+      return state.tokenizer(stream, state);
+    }
+    if (stream.match("//")) {
+      state.tokenizer = comment(stream.indentation(), false);
+      return state.tokenizer(stream, state);
+    }
+
+    // Interpolation
+    if (stream.match("#{")) {
+      state.tokenizer = buildInterpolationTokenizer(tokenBase);
+      return "operator";
+    }
+
+    if (ch === ".") {
+      stream.next();
+
+      // Match class selectors
+      if (stream.match(/^[\w-]+/)) {
+        indent(state);
+        return "atom";
+      } else if (stream.peek() === "#") {
+        indent(state);
+        return "atom";
+      } else {
+        return "operator";
+      }
+    }
+
+    if (ch === "#") {
+      stream.next();
+
+      // Hex numbers
+      if (stream.match(/[0-9a-fA-F]{6}|[0-9a-fA-F]{3}/))
+        return "number";
+
+      // ID selectors
+      if (stream.match(/^[\w-]+/)) {
+        indent(state);
+        return "atom";
+      }
+
+      if (stream.peek() === "#") {
+        indent(state);
+        return "atom";
+      }
+    }
+
+    // Numbers
+    if (stream.match(/^-?[0-9\.]+/))
+      return "number";
+
+    // Units
+    if (stream.match(/^(px|em|in)\b/))
+      return "unit";
+
+    if (stream.match(keywordsRegexp))
+      return "keyword";
+
+    if (stream.match(/^url/) && stream.peek() === "(") {
+      state.tokenizer = urlTokens;
+      return "atom";
+    }
+
+    // Variables
+    if (ch === "$") {
+      stream.next();
+      stream.eatWhile(/[\w-]/);
+
+      if (stream.peek() === ":") {
+        stream.next();
+        return "variable-2";
+      } else {
+        return "variable-3";
+      }
+    }
+
+    if (ch === "!") {
+      stream.next();
+      return stream.match(/^[\w]+/) ? "keyword": "operator";
+    }
+
+    if (ch === "=") {
+      stream.next();
+
+      // Match shortcut mixin definition
+      if (stream.match(/^[\w-]+/)) {
+        indent(state);
+        return "meta";
+      } else {
+        return "operator";
+      }
+    }
+
+    if (ch === "+") {
+      stream.next();
+
+      // Match shortcut mixin definition
+      if (stream.match(/^[\w-]+/))
+        return "variable-3";
+      else
+        return "operator";
+    }
+
+    // Indent Directives
+    if (stream.match(/^@(else if|if|media|else|for|each|while|mixin|function)/)) {
+      indent(state);
+      return "meta";
+    }
+
+    // Other Directives
+    if (ch === "@") {
+      stream.next();
+      stream.eatWhile(/[\w-]/);
+      return "meta";
+    }
+
+    // Strings
+    if (ch === '"' || ch === "'") {
+      stream.next();
+      state.tokenizer = buildStringTokenizer(ch);
+      return "string";
+    }
+
+    // Pseudo element selectors
+    if (ch == ":" && stream.match(pseudoElementsRegexp))
+      return "keyword";
+
+    // atoms
+    if (stream.eatWhile(/[\w-&]/)) {
+      // matches a property definition
+      if (stream.peek() === ":" && !stream.match(pseudoElementsRegexp, false))
+        return "property";
+      else
+        return "atom";
+    }
+
+    if (stream.match(opRegexp))
+      return "operator";
+
+    // If we haven't returned by now, we move 1 character
+    // and return an error
+    stream.next();
+    return null;
+  }
+
+  function tokenLexer(stream, state) {
+    if (stream.sol()) state.indentCount = 0;
+    var style = state.tokenizer(stream, state);
+    var current = stream.current();
+
+    if (current === "@return")
+      dedent(state);
+
+    if (style === "atom")
+      indent(state);
+
+    if (style !== null) {
+      var startOfToken = stream.pos - current.length;
+      var withCurrentIndent = startOfToken + (config.indentUnit * state.indentCount);
+
+      var newScopes = [];
+
+      for (var i = 0; i < state.scopes.length; i++) {
+        var scope = state.scopes[i];
+
+        if (scope.offset <= withCurrentIndent)
+          newScopes.push(scope);
+      }
+
+      state.scopes = newScopes;
+    }
+
+
+    return style;
+  }
+
+  return {
+    startState: function() {
+      return {
+        tokenizer: tokenBase,
+        scopes: [{offset: 0, type: "sass"}],
+        indentCount: 0,
+        definedVars: [],
+        definedMixins: []
+      };
+    },
+    token: function(stream, state) {
+      var style = tokenLexer(stream, state);
+
+      state.lastToken = { style: style, content: stream.current() };
+
+      return style;
+    },
+
+    indent: function(state) {
+      return state.scopes[0].offset;
+    }
+  };
+});
+
+CodeMirror.defineMIME("text/x-sass", "sass");
+
+});