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// CodeMirror, copyright (c) by Marijn Haverbeke and others
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// Distributed under an MIT license: https://codemirror.net/LICENSE
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// mode(s) for the sequence chart dsl's mscgen, xù and msgenny
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// For more information on mscgen, see the site of the original author:
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// http://www.mcternan.me.uk/mscgen
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//
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// This mode for mscgen and the two derivative languages were
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// originally made for use in the mscgen_js interpreter
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// (https://sverweij.github.io/mscgen_js)
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(function(mod) {
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  if ( typeof exports == "object" && typeof module == "object")// CommonJS
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    mod(require("../../lib/codemirror"));
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  else if ( typeof define == "function" && define.amd)// AMD
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    define(["../../lib/codemirror"], mod);
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  else// Plain browser env
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    mod(CodeMirror);
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})(function(CodeMirror) {
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  "use strict";
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  var languages = {
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    mscgen: {
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      "keywords" : ["msc"],
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      "options" : ["hscale", "width", "arcgradient", "wordwraparcs"],
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      "constants" : ["true", "false", "on", "off"],
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      "attributes" : ["label", "idurl", "id", "url", "linecolor", "linecolour", "textcolor", "textcolour", "textbgcolor", "textbgcolour", "arclinecolor", "arclinecolour", "arctextcolor", "arctextcolour", "arctextbgcolor", "arctextbgcolour", "arcskip"],
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      "brackets" : ["\\{", "\\}"], // [ and  ] are brackets too, but these get handled in with lists
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      "arcsWords" : ["note", "abox", "rbox", "box"],
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      "arcsOthers" : ["\\|\\|\\|", "\\.\\.\\.", "---", "--", "<->", "==", "<<=>>", "<=>", "\\.\\.", "<<>>", "::", "<:>", "->", "=>>", "=>", ">>", ":>", "<-", "<<=", "<=", "<<", "<:", "x-", "-x"],
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      "singlecomment" : ["//", "#"],
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      "operators" : ["="]
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    },
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    xu: {
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      "keywords" : ["msc", "xu"],
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      "options" : ["hscale", "width", "arcgradient", "wordwraparcs", "wordwrapentities", "watermark"],
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      "constants" : ["true", "false", "on", "off", "auto"],
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      "attributes" : ["label", "idurl", "id", "url", "linecolor", "linecolour", "textcolor", "textcolour", "textbgcolor", "textbgcolour", "arclinecolor", "arclinecolour", "arctextcolor", "arctextcolour", "arctextbgcolor", "arctextbgcolour", "arcskip", "title", "deactivate", "activate", "activation"],
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      "brackets" : ["\\{", "\\}"],  // [ and  ] are brackets too, but these get handled in with lists
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      "arcsWords" : ["note", "abox", "rbox", "box", "alt", "else", "opt", "break", "par", "seq", "strict", "neg", "critical", "ignore", "consider", "assert", "loop", "ref", "exc"],
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      "arcsOthers" : ["\\|\\|\\|", "\\.\\.\\.", "---", "--", "<->", "==", "<<=>>", "<=>", "\\.\\.", "<<>>", "::", "<:>", "->", "=>>", "=>", ">>", ":>", "<-", "<<=", "<=", "<<", "<:", "x-", "-x"],
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      "singlecomment" : ["//", "#"],
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      "operators" : ["="]
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    },
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    msgenny: {
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      "keywords" : null,
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      "options" : ["hscale", "width", "arcgradient", "wordwraparcs", "wordwrapentities", "watermark"],
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      "constants" : ["true", "false", "on", "off", "auto"],
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      "attributes" : null,
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      "brackets" : ["\\{", "\\}"],
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      "arcsWords" : ["note", "abox", "rbox", "box", "alt", "else", "opt", "break", "par", "seq", "strict", "neg", "critical", "ignore", "consider", "assert", "loop", "ref", "exc"],
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      "arcsOthers" : ["\\|\\|\\|", "\\.\\.\\.", "---", "--", "<->", "==", "<<=>>", "<=>", "\\.\\.", "<<>>", "::", "<:>", "->", "=>>", "=>", ">>", ":>", "<-", "<<=", "<=", "<<", "<:", "x-", "-x"],
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      "singlecomment" : ["//", "#"],
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      "operators" : ["="]
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    }
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  }
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  CodeMirror.defineMode("mscgen", function(_, modeConfig) {
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    var language = languages[modeConfig && modeConfig.language || "mscgen"]
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    return {
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      startState: startStateFn,
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      copyState: copyStateFn,
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      token: produceTokenFunction(language),
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      lineComment : "#",
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      blockCommentStart : "/*",
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      blockCommentEnd : "*/"
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    };
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  });
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  CodeMirror.defineMIME("text/x-mscgen", "mscgen");
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  CodeMirror.defineMIME("text/x-xu", {name: "mscgen", language: "xu"});
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  CodeMirror.defineMIME("text/x-msgenny", {name: "mscgen", language: "msgenny"});
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  function wordRegexpBoundary(pWords) {
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    return new RegExp("^\\b(?:" + pWords.join("|") + ")\\b", "i");
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  }
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  function wordRegexp(pWords) {
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    return new RegExp("^(?:" + pWords.join("|") + ")", "i");
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  }
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  function startStateFn() {
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    return {
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      inComment : false,
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      inString : false,
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      inAttributeList : false,
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      inScript : false
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    };
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  }
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  function copyStateFn(pState) {
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    return {
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      inComment : pState.inComment,
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      inString : pState.inString,
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      inAttributeList : pState.inAttributeList,
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      inScript : pState.inScript
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    };
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  }
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  function produceTokenFunction(pConfig) {
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    return function(pStream, pState) {
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      if (pStream.match(wordRegexp(pConfig.brackets), true, true)) {
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        return "bracket";
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      }
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      /* comments */
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      if (!pState.inComment) {
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        if (pStream.match(/\/\*[^\*\/]*/, true, true)) {
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          pState.inComment = true;
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          return "comment";
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        }
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        if (pStream.match(wordRegexp(pConfig.singlecomment), true, true)) {
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          pStream.skipToEnd();
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          return "comment";
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        }
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      }
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      if (pState.inComment) {
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        if (pStream.match(/[^\*\/]*\*\//, true, true))
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          pState.inComment = false;
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        else
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          pStream.skipToEnd();
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        return "comment";
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      }
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      /* strings */
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      if (!pState.inString && pStream.match(/\"(\\\"|[^\"])*/, true, true)) {
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        pState.inString = true;
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        return "string";
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      }
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      if (pState.inString) {
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        if (pStream.match(/[^\"]*\"/, true, true))
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          pState.inString = false;
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        else
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          pStream.skipToEnd();
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        return "string";
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      }
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      /* keywords & operators */
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      if (!!pConfig.keywords && pStream.match(wordRegexpBoundary(pConfig.keywords), true, true))
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        return "keyword";
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      if (pStream.match(wordRegexpBoundary(pConfig.options), true, true))
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        return "keyword";
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      if (pStream.match(wordRegexpBoundary(pConfig.arcsWords), true, true))
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        return "keyword";
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      if (pStream.match(wordRegexp(pConfig.arcsOthers), true, true))
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        return "keyword";
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      if (!!pConfig.operators && pStream.match(wordRegexp(pConfig.operators), true, true))
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        return "operator";
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      if (!!pConfig.constants && pStream.match(wordRegexp(pConfig.constants), true, true))
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        return "variable";
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      /* attribute lists */
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      if (!pConfig.inAttributeList && !!pConfig.attributes && pStream.match('[', true, true)) {
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        pConfig.inAttributeList = true;
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        return "bracket";
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      }
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      if (pConfig.inAttributeList) {
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        if (pConfig.attributes !== null && pStream.match(wordRegexpBoundary(pConfig.attributes), true, true)) {
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          return "attribute";
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        }
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        if (pStream.match(']', true, true)) {
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          pConfig.inAttributeList = false;
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          return "bracket";
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        }
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      }
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      pStream.next();
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      return "base";
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    };
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  }
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});
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