openrat-cms

vhdl.js (6704B)

---

 // CodeMirror, copyright (c) by Marijn Haverbeke and others
 // Distributed under an MIT license: http://codemirror.net/LICENSE
 
 // Originally written by Alf Nielsen, re-written by Michael Zhou
 (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";
 
 function words(str) {
   var obj = {}, words = str.split(",");
   for (var i = 0; i < words.length; ++i) {
     var allCaps = words[i].toUpperCase();
     var firstCap = words[i].charAt(0).toUpperCase() + words[i].slice(1);
     obj[words[i]] = true;
     obj[allCaps] = true;
     obj[firstCap] = true;
   }
   return obj;
 }
 
 function metaHook(stream) {
   stream.eatWhile(/[\w\$_]/);
   return "meta";
 }
 
 CodeMirror.defineMode("vhdl", function(config, parserConfig) {
   var indentUnit = config.indentUnit,
       atoms = parserConfig.atoms || words("null"),
       hooks = parserConfig.hooks || {"`": metaHook, "$": metaHook},
       multiLineStrings = parserConfig.multiLineStrings;
 
   var keywords = words("abs,access,after,alias,all,and,architecture,array,assert,attribute,begin,block," +
       "body,buffer,bus,case,component,configuration,constant,disconnect,downto,else,elsif,end,end block,end case," +
       "end component,end for,end generate,end if,end loop,end process,end record,end units,entity,exit,file,for," +
       "function,generate,generic,generic map,group,guarded,if,impure,in,inertial,inout,is,label,library,linkage," +
       "literal,loop,map,mod,nand,new,next,nor,null,of,on,open,or,others,out,package,package body,port,port map," +
       "postponed,procedure,process,pure,range,record,register,reject,rem,report,return,rol,ror,select,severity,signal," +
       "sla,sll,sra,srl,subtype,then,to,transport,type,unaffected,units,until,use,variable,wait,when,while,with,xnor,xor");
 
   var blockKeywords = words("architecture,entity,begin,case,port,else,elsif,end,for,function,if");
 
   var isOperatorChar = /[&|~><!\)\(*#%@+\/=?\:;}{,\.\^\-\[\]]/;
   var curPunc;
 
   function tokenBase(stream, state) {
     var ch = stream.next();
     if (hooks[ch]) {
       var result = hooks[ch](stream, state);
       if (result !== false) return result;
     }
     if (ch == '"') {
       state.tokenize = tokenString2(ch);
       return state.tokenize(stream, state);
     }
     if (ch == "'") {
       state.tokenize = tokenString(ch);
       return state.tokenize(stream, state);
     }
     if (/[\[\]{}\(\),;\:\.]/.test(ch)) {
       curPunc = ch;
       return null;
     }
     if (/[\d']/.test(ch)) {
       stream.eatWhile(/[\w\.']/);
       return "number";
     }
     if (ch == "-") {
       if (stream.eat("-")) {
         stream.skipToEnd();
         return "comment";
       }
     }
     if (isOperatorChar.test(ch)) {
       stream.eatWhile(isOperatorChar);
       return "operator";
     }
     stream.eatWhile(/[\w\$_]/);
     var cur = stream.current();
     if (keywords.propertyIsEnumerable(cur.toLowerCase())) {
       if (blockKeywords.propertyIsEnumerable(cur)) curPunc = "newstatement";
       return "keyword";
     }
     if (atoms.propertyIsEnumerable(cur)) return "atom";
     return "variable";
   }
 
   function tokenString(quote) {
     return function(stream, state) {
       var escaped = false, next, end = false;
       while ((next = stream.next()) != null) {
         if (next == quote && !escaped) {end = true; break;}
         escaped = !escaped && next == "--";
       }
       if (end || !(escaped || multiLineStrings))
         state.tokenize = tokenBase;
       return "string";
     };
   }
   function tokenString2(quote) {
     return function(stream, state) {
       var escaped = false, next, end = false;
       while ((next = stream.next()) != null) {
         if (next == quote && !escaped) {end = true; break;}
         escaped = !escaped && next == "--";
       }
       if (end || !(escaped || multiLineStrings))
         state.tokenize = tokenBase;
       return "string-2";
     };
   }
 
   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) {
     return state.context = new Context(state.indented, 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" || style == "meta") return style;
       if (ctx.align == null) ctx.align = true;
 
       if ((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 (ctx.type == "}" || ctx.type == "top" || (ctx.type == "statement" && curPunc == "newstatement"))
         pushContext(state, stream.column(), "statement");
       state.startOfLine = false;
       return style;
     },
 
     indent: function(state, textAfter) {
       if (state.tokenize != tokenBase && state.tokenize != null) return 0;
       var firstChar = textAfter && textAfter.charAt(0), ctx = state.context, closing = firstChar == ctx.type;
       if (ctx.type == "statement") return ctx.indented + (firstChar == "{" ? 0 : indentUnit);
       else if (ctx.align) return ctx.column + (closing ? 0 : 1);
       else return ctx.indented + (closing ? 0 : indentUnit);
     },
 
     electricChars: "{}"
   };
 });
 
 CodeMirror.defineMIME("text/x-vhdl", "vhdl");
 
 });