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// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: http://codemirror.net/LICENSE

// Slim Highlighting for CodeMirror copyright (c) HicknHack Software Gmbh

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"), require("../htmlmixed/htmlmixed"), require("../ruby/ruby"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror", "../htmlmixed/htmlmixed", "../ruby/ruby"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
"use strict";

CodeMirror.defineMode("slim", function(config) {
    var htmlMode = CodeMirror.getMode(config, {name: "htmlmixed"});
    var rubyMode = CodeMirror.getMode(config, "ruby");
    var modes = { html: htmlMode, ruby: rubyMode };
    var embedded = {
      ruby: "ruby",
      javascript: "javascript",
      css: "text/css",
      sass: "text/x-sass",
      scss: "text/x-scss",
      less: "text/x-less",
      styl: "text/x-styl", // no highlighting so far
      coffee: "coffeescript",
      asciidoc: "text/x-asciidoc",
      markdown: "text/x-markdown",
      textile: "text/x-textile", // no highlighting so far
      creole: "text/x-creole", // no highlighting so far
      wiki: "text/x-wiki", // no highlighting so far
      mediawiki: "text/x-mediawiki", // no highlighting so far
      rdoc: "text/x-rdoc", // no highlighting so far
      builder: "text/x-builder", // no highlighting so far
      nokogiri: "text/x-nokogiri", // no highlighting so far
      erb: "application/x-erb"
    };
    var embeddedRegexp = function(map){
      var arr = [];
      for(var key in map) arr.push(key);
      return new RegExp("^("+arr.join('|')+"):");
    }(embedded);

var styleMap = {
      "commentLine": "comment",
      "slimSwitch": "operator special",
      "slimTag": "tag",
      "slimId": "attribute def",
      "slimClass": "attribute qualifier",
      "slimAttribute": "attribute",
      "slimSubmode": "keyword special",
      "closeAttributeTag": null,
      "slimDoctype": null,
      "lineContinuation": null
    };
    var closing = {
      "{": "}",
      "[": "]",
      "(": ")"
    };

var nameStartChar = "_a-zA-Z\xC0-\xD6\xD8-\xF6\xF8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD";
    var nameChar = nameStartChar + "\\-0-9\xB7\u0300-\u036F\u203F-\u2040";
    var nameRegexp = new RegExp("^[:"+nameStartChar+"](?::["+nameChar+"]|["+nameChar+"]*)");
    var attributeNameRegexp = new RegExp("^[:"+nameStartChar+"][:\\."+nameChar+"]*(?=\\s*=)");
    var wrappedAttributeNameRegexp = new RegExp("^[:"+nameStartChar+"][:\\."+nameChar+"]*");
    var classNameRegexp = /^\.-?[_a-zA-Z]+[\w\-]*/;
    var classIdRegexp = /^#[_a-zA-Z]+[\w\-]*/;

function maybeBackup(stream, state, pat, offset, style) {
      var cur = stream.current();
      var idx = cur.search(pat);
      if (idx > -1) {
        state.tokenize = backup(stream.pos, state.tokenize, style);
        stream.backUp(cur.length - idx - offset);
      }
      return style;
    }

function ruby(stream, state) {
      return rubyMode.token(stream, state.rubyState);
    }

function startHtmlLine(lastTokenize) {
      return function(stream, state) {
        var style = htmlLine(stream, state);
        if (stream.eol()) state.tokenize = lastTokenize;
        return style;
      };
    }

function startHtmlMode(stream, state, offset) {
      state.stack = {
        parent: state.stack,
        style: "html",
        indented: stream.column() + offset, // pipe + space
        tokenize: state.line
      };
      state.line = state.tokenize = html;
      return null;
    }

function comment(stream, state) {
      stream.skipToEnd();
      return state.stack.style;
    }

function commentMode(stream, state) {
      state.stack = {
        parent: state.stack,
        style: "comment",
        indented: state.indented + 1,
        tokenize: state.line
      };
      state.line = comment;
      return comment(stream, state);
    }

function startAttributeWrapperMode(state, endQuote, tokenize) {
      state.stack = {
        parent: state.stack,
        style: "wrapper",
        indented: state.indented + 1,
        tokenize: tokenize,
        line: state.line,
        endQuote: endQuote
      };
      state.line = state.tokenize = attributeWrapper;
      return null;
    }

function getMode(mode) {
      if (!modes.hasOwnProperty(mode)) {
        return modes[mode] = createMode(mode);
      }
      return modes[mode];
    }

function startSubMode(mode, state) {
      var subMode = getMode(mode);
      var subState = CodeMirror.startState(subMode);

state.subMode = subMode;
      state.subState = subState;

state.stack = {
        parent: state.stack,
        style: "sub",
        indented: state.indented + 1,
        tokenize: state.line
      };
      state.line = state.tokenize = firstSub;
      return "slimSubmode";
    }

function doctypeLine(stream, _state) {
      stream.skipToEnd();
      return "slimDoctype";
    }

var m = stream.match(embeddedRegexp);
      if (m) {
        return startSubMode(m[1], state);
      }

return slimTag(stream, state);
    }

function slim(stream, state) {
      if (state.startOfLine) {
        return startLine(stream, state);
      }
      return slimTag(stream, state);
    }

var mode = {
      // default to html mode
      startState: function() {
        var htmlState = CodeMirror.startState(htmlMode);
        var rubyState = CodeMirror.startState(rubyMode);
        return {
          htmlState: htmlState,
          rubyState: rubyState,
          stack: null,
          last: null,
          tokenize: slim,
          line: slim,
          indented: 0
        };
      },

copyState: function(state) {
        return {
          htmlState : CodeMirror.copyState(htmlMode, state.htmlState),
          rubyState: CodeMirror.copyState(rubyMode, state.rubyState),
          subMode: state.subMode,
          subState: state.subMode && CodeMirror.copyState(state.subMode, state.subState),
          stack: state.stack,
          last: state.last,
          tokenize: state.tokenize,
          line: state.line
        };
      },

token: function(stream, state) {
        if (stream.sol()) {
          state.indented = stream.indentation();
          state.startOfLine = true;
          state.tokenize = state.line;
          while (state.stack && state.stack.indented > state.indented && state.last != "slimSubmode") {
            state.line = state.tokenize = state.stack.tokenize;
            state.stack = state.stack.parent;
            state.subMode = null;
            state.subState = null;
          }
        }
        if (stream.eatSpace()) return null;
        var style = state.tokenize(stream, state);
        state.startOfLine = false;
        if (style) state.last = style;
        return styleMap.hasOwnProperty(style) ? styleMap[style] : style;
      },

blankLine: function(state) {
        if (state.subMode && state.subMode.blankLine) {
          return state.subMode.blankLine(state.subState);
        }
      },

innerMode: function(state) {
        if (state.subMode) return {state: state.subState, mode: state.subMode};
        return {state: state, mode: mode};
      }

//indent: function(state) {
      //  return state.indented;
      //}
    };
    return mode;
  }, "htmlmixed", "ruby");

CodeMirror.defineMIME("text/x-slim", "slim");
  CodeMirror.defineMIME("application/x-slim", "slim");
});

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