// 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("ttcn-cfg", function(config, parserConfig) {
    var indentUnit = config.indentUnit,
        keywords = parserConfig.keywords || {},
        fileNCtrlMaskOptions = parserConfig.fileNCtrlMaskOptions || {},
        externalCommands = parserConfig.externalCommands || {},
        multiLineStrings = parserConfig.multiLineStrings,
        indentStatements = parserConfig.indentStatements !== false;
    var isOperatorChar = /[\|]/;
    var curPunc;

    function tokenBase(stream, state) {
      var ch = stream.next();
      if (ch == '"' || ch == "'") {
        state.tokenize = tokenString(ch);
        return state.tokenize(stream, state);
      }
      if (/[:=]/.test(ch)) {
        curPunc = ch;
        return "punctuation";
      }
      if (ch == "#"){
        stream.skipToEnd();
        return "comment";
      }
      if (/\d/.test(ch)) {
        stream.eatWhile(/[\w\.]/);
        return "number";
      }
      if (isOperatorChar.test(ch)) {
        stream.eatWhile(isOperatorChar);
        return "operator";
      }
      if (ch == "["){
        stream.eatWhile(/[\w_\]]/);
        return "number sectionTitle";
      }

      stream.eatWhile(/[\w\$_]/);
      var cur = stream.current();
      if (keywords.propertyIsEnumerable(cur)) return "keyword";
      if (fileNCtrlMaskOptions.propertyIsEnumerable(cur))
        return "negative fileNCtrlMaskOptions";
      if (externalCommands.propertyIsEnumerable(cur)) return "negative externalCommands";

      return "variable";
    }

    function tokenString(quote) {
      return function(stream, state) {
        var escaped = false, next, end = false;
        while ((next = stream.next()) != null) {
          if (next == quote && !escaped){
            var afterNext = stream.peek();
            //look if the character if the quote is like the B in '10100010'B
            if (afterNext){
              afterNext = afterNext.toLowerCase();
              if(afterNext == "b" || afterNext == "h" || afterNext == "o")
                stream.next();
            }
            end = true; break;
          }
          escaped = !escaped && next == "\\";
        }
        if (end || !(escaped || multiLineStrings))
          state.tokenize = null;
        return "string";
      };
    }

    function Context(indented, column, type, align, prev) {
      this.indented = indented;
      this.column = column;
      this.type = type;
      this.align = align;
      this.prev = prev;
    }
    function pushContext(state, col, type) {
      var indent = state.indented;
      if (state.context && state.context.type == "statement")
        indent = state.context.indented;
      return state.context = new Context(indent, col, type, null, state.context);
    }
    function popContext(state) {
      var t = state.context.type;
      if (t == ")" || t == "]" || t == "}")
        state.indented = state.context.indented;
      return state.context = state.context.prev;
    }

    //Interface
    return {
      startState: function(basecolumn) {
        return {
          tokenize: null,
          context: new Context((basecolumn || 0) - indentUnit, 0, "top", false),
          indented: 0,
          startOfLine: true
        };
      },

      token: function(stream, state) {
        var ctx = state.context;
        if (stream.sol()) {
          if (ctx.align == null) ctx.align = false;
          state.indented = stream.indentation();
          state.startOfLine = true;
        }
        if (stream.eatSpace()) return null;
        curPunc = null;
        var style = (state.tokenize || tokenBase)(stream, state);
        if (style == "comment") return style;
        if (ctx.align == null) ctx.align = true;

        if ((curPunc == ";" || curPunc == ":" || curPunc == ",")
            && ctx.type == "statement"){
          popContext(state);
        }
        else if (curPunc == "{") pushContext(state, stream.column(), "}");
        else if (curPunc == "[") pushContext(state, stream.column(), "]");
        else if (curPunc == "(") pushContext(state, stream.column(), ")");
        else if (curPunc == "}") {
          while (ctx.type == "statement") ctx = popContext(state);
          if (ctx.type == "}") ctx = popContext(state);
          while (ctx.type == "statement") ctx = popContext(state);
        }
        else if (curPunc == ctx.type) popContext(state);
        else if (indentStatements && (((ctx.type == "}" || ctx.type == "top")
            && curPunc != ';') || (ctx.type == "statement"
            && curPunc == "newstatement")))
          pushContext(state, stream.column(), "statement");
        state.startOfLine = false;
        return style;
      },

      electricChars: "{}",
      lineComment: "#",
      fold: "brace"
    };
  });

  function words(str) {
    var obj = {}, words = str.split(" ");
    for (var i = 0; i < words.length; ++i)
      obj[words[i]] = true;
    return obj;
  }

  CodeMirror.defineMIME("text/x-ttcn-cfg", {
    name: "ttcn-cfg",
    keywords: words("Yes No LogFile FileMask ConsoleMask AppendFile" +
    " TimeStampFormat LogEventTypes SourceInfoFormat" +
    " LogEntityName LogSourceInfo DiskFullAction" +
    " LogFileNumber LogFileSize MatchingHints Detailed" +
    " Compact SubCategories Stack Single None Seconds" +
    " DateTime Time Stop Error Retry Delete TCPPort KillTimer" +
    " NumHCs UnixSocketsEnabled LocalAddress"),
    fileNCtrlMaskOptions: words("TTCN_EXECUTOR TTCN_ERROR TTCN_WARNING" +
    " TTCN_PORTEVENT TTCN_TIMEROP TTCN_VERDICTOP" +
    " TTCN_DEFAULTOP TTCN_TESTCASE TTCN_ACTION" +
    " TTCN_USER TTCN_FUNCTION TTCN_STATISTICS" +
    " TTCN_PARALLEL TTCN_MATCHING TTCN_DEBUG" +
    " EXECUTOR ERROR WARNING PORTEVENT TIMEROP" +
    " VERDICTOP DEFAULTOP TESTCASE ACTION USER" +
    " FUNCTION STATISTICS PARALLEL MATCHING DEBUG" +
    " LOG_ALL LOG_NOTHING ACTION_UNQUALIFIED" +
    " DEBUG_ENCDEC DEBUG_TESTPORT" +
    " DEBUG_UNQUALIFIED DEFAULTOP_ACTIVATE" +
    " DEFAULTOP_DEACTIVATE DEFAULTOP_EXIT" +
    " DEFAULTOP_UNQUALIFIED ERROR_UNQUALIFIED" +
    " EXECUTOR_COMPONENT EXECUTOR_CONFIGDATA" +
    " EXECUTOR_EXTCOMMAND EXECUTOR_LOGOPTIONS" +
    " EXECUTOR_RUNTIME EXECUTOR_UNQUALIFIED" +
    " FUNCTION_RND FUNCTION_UNQUALIFIED" +
    " MATCHING_DONE MATCHING_MCSUCCESS" +
    " MATCHING_MCUNSUCC MATCHING_MMSUCCESS" +
    " MATCHING_MMUNSUCC MATCHING_PCSUCCESS" +
    " MATCHING_PCUNSUCC MATCHING_PMSUCCESS" +
    " MATCHING_PMUNSUCC MATCHING_PROBLEM" +
    " MATCHING_TIMEOUT MATCHING_UNQUALIFIED" +
    " PARALLEL_PORTCONN PARALLEL_PORTMAP" +
    " PARALLEL_PTC PARALLEL_UNQUALIFIED" +
    " PORTEVENT_DUALRECV PORTEVENT_DUALSEND" +
    " PORTEVENT_MCRECV PORTEVENT_MCSEND" +
    " PORTEVENT_MMRECV PORTEVENT_MMSEND" +
    " PORTEVENT_MQUEUE PORTEVENT_PCIN" +
    " PORTEVENT_PCOUT PORTEVENT_PMIN" +
    " PORTEVENT_PMOUT PORTEVENT_PQUEUE" +
    " PORTEVENT_STATE PORTEVENT_UNQUALIFIED" +
    " STATISTICS_UNQUALIFIED STATISTICS_VERDICT" +
    " TESTCASE_FINISH TESTCASE_START" +
    " TESTCASE_UNQUALIFIED TIMEROP_GUARD" +
    " TIMEROP_READ TIMEROP_START TIMEROP_STOP" +
    " TIMEROP_TIMEOUT TIMEROP_UNQUALIFIED" +
    " USER_UNQUALIFIED VERDICTOP_FINAL" +
    " VERDICTOP_GETVERDICT VERDICTOP_SETVERDICT" +
    " VERDICTOP_UNQUALIFIED WARNING_UNQUALIFIED"),
    externalCommands: words("BeginControlPart EndControlPart BeginTestCase" +
    " EndTestCase"),
    multiLineStrings: true
  });
});