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fcl.js (4703B)


      1 // CodeMirror, copyright (c) by Marijn Haverbeke and others
      2 // Distributed under an MIT license: http://codemirror.net/LICENSE
      3 
      4 (function(mod) {
      5   if (typeof exports == "object" && typeof module == "object") // CommonJS
      6     mod(require("../../lib/codemirror"));
      7   else if (typeof define == "function" && define.amd) // AMD
      8     define(["../../lib/codemirror"], mod);
      9   else // Plain browser env
     10     mod(CodeMirror);
     11 })(function(CodeMirror) {
     12 "use strict";
     13 
     14 CodeMirror.defineMode("fcl", function(config) {
     15   var indentUnit = config.indentUnit;
     16 
     17   var keywords = {
     18       "term": true,
     19       "method": true, "accu": true,
     20       "rule": true, "then": true, "is": true, "and": true, "or": true,
     21       "if": true, "default": true
     22   };
     23 
     24   var start_blocks = {
     25       "var_input": true,
     26       "var_output": true,
     27       "fuzzify": true,
     28       "defuzzify": true,
     29       "function_block": true,
     30       "ruleblock": true
     31   };
     32 
     33   var end_blocks = {
     34       "end_ruleblock": true,
     35       "end_defuzzify": true,
     36       "end_function_block": true,
     37       "end_fuzzify": true,
     38       "end_var": true
     39   };
     40 
     41   var atoms = {
     42       "true": true, "false": true, "nan": true,
     43       "real": true, "min": true, "max": true, "cog": true, "cogs": true
     44   };
     45 
     46   var isOperatorChar = /[+\-*&^%:=<>!|\/]/;
     47 
     48   function tokenBase(stream, state) {
     49     var ch = stream.next();
     50 
     51     if (/[\d\.]/.test(ch)) {
     52       if (ch == ".") {
     53         stream.match(/^[0-9]+([eE][\-+]?[0-9]+)?/);
     54       } else if (ch == "0") {
     55         stream.match(/^[xX][0-9a-fA-F]+/) || stream.match(/^0[0-7]+/);
     56       } else {
     57         stream.match(/^[0-9]*\.?[0-9]*([eE][\-+]?[0-9]+)?/);
     58       }
     59       return "number";
     60     }
     61 
     62     if (ch == "/" || ch == "(") {
     63       if (stream.eat("*")) {
     64         state.tokenize = tokenComment;
     65         return tokenComment(stream, state);
     66       }
     67       if (stream.eat("/")) {
     68         stream.skipToEnd();
     69         return "comment";
     70       }
     71     }
     72     if (isOperatorChar.test(ch)) {
     73       stream.eatWhile(isOperatorChar);
     74       return "operator";
     75     }
     76     stream.eatWhile(/[\w\$_\xa1-\uffff]/);
     77 
     78     var cur = stream.current().toLowerCase();
     79     if (keywords.propertyIsEnumerable(cur) ||
     80         start_blocks.propertyIsEnumerable(cur) ||
     81         end_blocks.propertyIsEnumerable(cur)) {
     82       return "keyword";
     83     }
     84     if (atoms.propertyIsEnumerable(cur)) return "atom";
     85     return "variable";
     86   }
     87 
     88 
     89   function tokenComment(stream, state) {
     90     var maybeEnd = false, ch;
     91     while (ch = stream.next()) {
     92       if ((ch == "/" || ch == ")") && maybeEnd) {
     93         state.tokenize = tokenBase;
     94         break;
     95       }
     96       maybeEnd = (ch == "*");
     97     }
     98     return "comment";
     99   }
    100 
    101   function Context(indented, column, type, align, prev) {
    102     this.indented = indented;
    103     this.column = column;
    104     this.type = type;
    105     this.align = align;
    106     this.prev = prev;
    107   }
    108 
    109   function pushContext(state, col, type) {
    110     return state.context = new Context(state.indented, col, type, null, state.context);
    111   }
    112 
    113   function popContext(state) {
    114     if (!state.context.prev) return;
    115     var t = state.context.type;
    116     if (t == "end_block")
    117       state.indented = state.context.indented;
    118     return state.context = state.context.prev;
    119   }
    120 
    121   // Interface
    122 
    123   return {
    124     startState: function(basecolumn) {
    125       return {
    126         tokenize: null,
    127         context: new Context((basecolumn || 0) - indentUnit, 0, "top", false),
    128         indented: 0,
    129         startOfLine: true
    130       };
    131     },
    132 
    133     token: function(stream, state) {
    134         var ctx = state.context;
    135         if (stream.sol()) {
    136             if (ctx.align == null) ctx.align = false;
    137             state.indented = stream.indentation();
    138             state.startOfLine = true;
    139         }
    140         if (stream.eatSpace()) return null;
    141 
    142         var style = (state.tokenize || tokenBase)(stream, state);
    143         if (style == "comment") return style;
    144         if (ctx.align == null) ctx.align = true;
    145 
    146         var cur = stream.current().toLowerCase();
    147 
    148         if (start_blocks.propertyIsEnumerable(cur)) pushContext(state, stream.column(), "end_block");
    149         else if (end_blocks.propertyIsEnumerable(cur))  popContext(state);
    150 
    151         state.startOfLine = false;
    152         return style;
    153     },
    154 
    155     indent: function(state, textAfter) {
    156       if (state.tokenize != tokenBase && state.tokenize != null) return 0;
    157       var ctx = state.context;
    158 
    159       var closing = end_blocks.propertyIsEnumerable(textAfter);
    160       if (ctx.align) return ctx.column + (closing ? 0 : 1);
    161       else return ctx.indented + (closing ? 0 : indentUnit);
    162     },
    163 
    164     electricChars: "ryk",
    165     fold: "brace",
    166     blockCommentStart: "(*",
    167     blockCommentEnd: "*)",
    168     lineComment: "//"
    169   };
    170 });
    171 
    172 CodeMirror.defineMIME("text/x-fcl", "fcl");
    173 });