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mobile-query-three-www-vendor-CodeMirror2-mode-rust-rust.js / js



  CodeMirror.defineMode("rust", function() {
    var indentUnit = 4, altIndentUnit = 2;
    var valKeywords = {
      "if": "if-style", "while": "if-style", "else": "else-style",
      "do": "else-style", "ret": "else-style", "fail": "else-style",
      "break": "atom", "cont": "atom", "const": "let", "resource": "fn",
      "let": "let", "fn": "fn", "for": "for", "alt": "alt", "iface": "iface",
      "impl": "impl", "type": "type", "enum": "enum", "mod": "mod",
      "as": "op", "true": "atom", "false": "atom", "assert": "op", "check": "op",
      "claim": "op", "native": "ignore", "unsafe": "ignore", "import": "else-style",
      "export": "else-style", "copy": "op", "log": "op", "log_err": "op",
      "use": "op", "bind": "op", "self": "atom"
    };
    var typeKeywords = function() {
      var keywords = {"fn": "fn", "block": "fn", "obj": "obj"};
      var atoms = "bool uint int i8 i16 i32 i64 u8 u16 u32 u64 float f32 f64 str char".split(" ");
      for (var i = 0, e = atoms.length; i < e; ++i) keywords[atoms[i]] = "atom";
      return keywords;
    }();
    var operatorChar = /[+\-*&%=<>!?|\.@]/;
  
    // Tokenizer
  
    // Used as scratch variable to communicate multiple values without
    // consing up tons of objects.
    var tcat, content;
    function r(tc, style) {
      tcat = tc;
      return style;
    }
  
    function tokenBase(stream, state) {
      var ch = stream.next();
      if (ch == '"') {
        state.tokenize = tokenString;
        return state.tokenize(stream, state);
      }
      if (ch == "'") {
        tcat = "atom";
        if (stream.eat("\\")) {
          if (stream.skipTo("'")) { stream.next(); return "string"; }
          else { return "error"; }
        } else {
          stream.next();
          return stream.eat("'") ? "string" : "error";
        }
      }
      if (ch == "/") {
        if (stream.eat("/")) { stream.skipToEnd(); return "comment"; }
        if (stream.eat("*")) {
          state.tokenize = tokenComment(1);
          return state.tokenize(stream, state);
        }
      }
      if (ch == "#") {
        if (stream.eat("[")) { tcat = "open-attr"; return null; }
        stream.eatWhile(/\w/);
        return r("macro", "meta");
      }
      if (ch == ":" && stream.match(":<")) {
        return r("op", null);
      }
      if (ch.match(/\d/) || (ch == "." && stream.eat(/\d/))) {
        var flp = false;
        if (!stream.match(/^x[\da-f]+/i) && !stream.match(/^b[01]+/)) {
          stream.eatWhile(/\d/);
          if (stream.eat(".")) { flp = true; stream.eatWhile(/\d/); }
          if (stream.match(/^e[+\-]?\d+/i)) { flp = true; }
        }
        if (flp) stream.match(/^f(?:32|64)/);
        else stream.match(/^[ui](?:8|16|32|64)/);
        return r("atom", "number");
      }
      if (ch.match(/[()\[\]{}:;,]/)) return r(ch, null);
      if (ch == "-" && stream.eat(">")) return r("->", null);
      if (ch.match(operatorChar)) {
        stream.eatWhile(operatorChar);
        return r("op", null);
      }
      stream.eatWhile(/\w/);
      content = stream.current();
      if (stream.match(/^::\w/)) {
        stream.backUp(1);
        return r("prefix", "variable-2");
      }
      if (state.keywords.propertyIsEnumerable(content))
        return r(state.keywords[content], content.match(/true|false/) ? "atom" : "keyword");
      return r("name", "variable");
    }
  
    function tokenString(stream, state) {
      var ch, escaped = false;
      while (ch = stream.next()) {
        if (ch == '"' && !escaped) {
          state.tokenize = tokenBase;
          return r("atom", "string");
        }
        escaped = !escaped && ch == "\\";
      }
      // Hack to not confuse the parser when a string is split in
      // pieces.
      return r("op", "string");
    }
  
    function tokenComment(depth) {
      return function(stream, state) {
        var lastCh = null, ch;
        while (ch = stream.next()) {
          if (ch == "/" && lastCh == "*") {
            if (depth == 1) {
              state.tokenize = tokenBase;
              break;
            } else {
              state.tokenize = tokenComment(depth - 1);
              return state.tokenize(stream, state);
            }
          }
          if (ch == "*" && lastCh == "/") {
            state.tokenize = tokenComment(depth + 1);
            return state.tokenize(stream, state);
          }
          lastCh = ch;
        }
        return "comment";
      };
    }
  
    // Parser
  
    var cx = {state: null, stream: null, marked: null, cc: null};
    function pass() {
      for (var i = arguments.length - 1; i >= 0; i--) cx.cc.push(arguments[i]);
    }
    function cont() {
      pass.apply(null, arguments);
      return true;
    }
  
    function pushlex(type, info) {
      var result = function() {
        var state = cx.state;
        state.lexical = {indented: state.indented, column: cx.stream.column(),
                         type: type, prev: state.lexical, info: info};
      };
      result.lex = true;
      return result;
    }
    function poplex() {
      var state = cx.state;
      if (state.lexical.prev) {
        if (state.lexical.type == ")")
          state.indented = state.lexical.indented;
        state.lexical = state.lexical.prev;
      }
    }
    function typecx() { cx.state.keywords = typeKeywords; }
    function valcx() { cx.state.keywords = valKeywords; }
    poplex.lex = typecx.lex = valcx.lex = true;
  
    function commasep(comb, end) {
      function more(type) {
        if (type == ",") return cont(comb, more);
        if (type == end) return cont();
        return cont(more);
      }
      return function(type) {
        if (type == end) return cont();
        return pass(comb, more);
      };
    }
  
    function stat_of(comb, tag) {
      return cont(pushlex("stat", tag), comb, poplex, block);
    }
    function block(type) {
      if (type == "}") return cont();
      if (type == "let") return stat_of(letdef1, "let");
      if (type == "fn") return stat_of(fndef);
      if (type == "type") return cont(pushlex("stat"), tydef, endstatement, poplex, block);
      if (type == "enum") return stat_of(enumdef);
      if (type == "mod") return stat_of(mod);
      if (type == "iface") return stat_of(iface);
      if (type == "impl") return stat_of(impl);
      if (type == "open-attr") return cont(pushlex("]"), commasep(expression, "]"), poplex);
      if (type == "ignore" || type.match(/[\]\);,]/)) return cont(block);
      return pass(pushlex("stat"), expression, poplex, endstatement, block);
    }
    function endstatement(type) {
      if (type == ";") return cont();
      return pass();
    }
    function expression(type) {
      if (type == "atom" || type == "name") return cont(maybeop);
      if (type == "{") return cont(pushlex("}"), exprbrace, poplex);
      if (type.match(/[\[\(]/)) return matchBrackets(type, expression);
      if (type.match(/[\]\)\};,]/)) return pass();
      if (type == "if-style") return cont(expression, expression);
      if (type == "else-style" || type == "op") return cont(expression);
      if (type == "for") return cont(pattern, maybetype, inop, expression, expression);
      if (type == "alt") return cont(expression, altbody);
      if (type == "fn") return cont(fndef);
      if (type == "macro") return cont(macro);
      return cont();
    }
    function maybeop(type) {
      if (content == ".") return cont(maybeprop);
      if (content == "::<"){return cont(typarams, maybeop);}
      if (type == "op" || content == ":") return cont(expression);
      if (type == "(" || type == "[") return matchBrackets(type, expression);
      return pass();
    }
    function maybeprop(type) {
      if (content.match(/^\w+/)) {cx.marked = "variable"; return cont(maybeop);}
      return pass(expression);
    }
    function exprbrace(type) {
      if (type == "op") {
        if (content == "|") return cont(blockvars, poplex, pushlex("}", "block"), block);
        if (content == "||") return cont(poplex, pushlex("}", "block"), block);
      }
      if (content == "mutable" || (content.match(/^\w+/) && cx.stream.peek() == ":"
                                   && !cx.stream.match("::", false)))
        return pass(record_of(expression));
      return pass(block);
    }
    function record_of(comb) {
      function ro(type) {
        if (content == "mutable" || content == "with") {cx.marked = "keyword"; return cont(ro);}
        if (content.match(/^\w*/)) {cx.marked = "variable"; return cont(ro);}
        if (type == ":") return cont(comb, ro);
        if (type == "}") return cont();
        return cont(ro);
      }
      return ro;
    }
    function blockvars(type) {
      if (type == "name") {cx.marked = "def"; return cont(blockvars);}
      if (type == "op" && content == "|") return cont();
      return cont(blockvars);
    }
  
    function letdef1(type) {
      if (type.match(/[\]\)\};]/)) return cont();
      if (content == "=") return cont(expression, letdef2);
      if (type == ",") return cont(letdef1);
      return pass(pattern, maybetype, letdef1);
    }
    function letdef2(type) {
      if (type.match(/[\]\)\};,]/)) return pass(letdef1);
      else return pass(expression, letdef2);
    }
    function maybetype(type) {
      if (type == ":") return cont(typecx, rtype, valcx);
      return pass();
    }
    function inop(type) {
      if (type == "name" && content == "in") {cx.marked = "keyword"; return cont();}
      return pass();
    }
    function fndef(type) {
      if (content == "@" || content == "~") {cx.marked = "keyword"; return cont(fndef);}
      if (type == "name") {cx.marked = "def"; return cont(fndef);}
      if (content == "<") return cont(typarams, fndef);
      if (type == "{") return pass(expression);
      if (type == "(") return cont(pushlex(")"), commasep(argdef, ")"), poplex, fndef);
      if (type == "->") return cont(typecx, rtype, valcx, fndef);
      if (type == ";") return cont();
      return cont(fndef);
    }
    function tydef(type) {
      if (type == "name") {cx.marked = "def"; return cont(tydef);}
      if (content == "<") return cont(typarams, tydef);
      if (content == "=") return cont(typecx, rtype, valcx);
      return cont(tydef);
    }
    function enumdef(type) {
      if (type == "name") {cx.marked = "def"; return cont(enumdef);}
      if (content == "<") return cont(typarams, enumdef);
      if (content == "=") return cont(typecx, rtype, valcx, endstatement);
      if (type == "{") return cont(pushlex("}"), typecx, enumblock, valcx, poplex);
      return cont(enumdef);
    }
    function enumblock(type) {
      if (type == "}") return cont();
      if (type == "(") return cont(pushlex(")"), commasep(rtype, ")"), poplex, enumblock);
      if (content.match(/^\w+/)) cx.marked = "def";
      return cont(enumblock);
    }
    function mod(type) {
      if (type == "name") {cx.marked = "def"; return cont(mod);}
      if (type == "{") return cont(pushlex("}"), block, poplex);
      return pass();
    }
    function iface(type) {
      if (type == "name") {cx.marked = "def"; return cont(iface);}
      if (content == "<") return cont(typarams, iface);
      if (type == "{") return cont(pushlex("}"), block, poplex);
      return pass();
    }
    function impl(type) {
      if (content == "<") return cont(typarams, impl);
      if (content == "of" || content == "for") {cx.marked = "keyword"; return cont(rtype, impl);}
      if (type == "name") {cx.marked = "def"; return cont(impl);}
      if (type == "{") return cont(pushlex("}"), block, poplex);
      return pass();
    }
    function typarams(type) {
      if (content == ">") return cont();
      if (content == ",") return cont(typarams);
      if (content == ":") return cont(rtype, typarams);
      return pass(rtype, typarams);
    }
    function argdef(type) {
      if (type == "name") {cx.marked = "def"; return cont(argdef);}
      if (type == ":") return cont(typecx, rtype, valcx);
      return pass();
    }
    function rtype(type) {
      if (type == "name") {cx.marked = "variable-3"; return cont(rtypemaybeparam); }
      if (content == "mutable") {cx.marked = "keyword"; return cont(rtype);}
      if (type == "atom") return cont(rtypemaybeparam);
      if (type == "op" || type == "obj") return cont(rtype);
      if (type == "fn") return cont(fntype);
      if (type == "{") return cont(pushlex("{"), record_of(rtype), poplex);
      return matchBrackets(type, rtype);
    }
    function rtypemaybeparam(type) {
      if (content == "<") return cont(typarams);
      return pass();
    }
    function fntype(type) {
      if (type == "(") return cont(pushlex("("), commasep(rtype, ")"), poplex, fntype);
      if (type == "->") return cont(rtype);
      return pass();
    }
    function pattern(type) {
      if (type == "name") {cx.marked = "def"; return cont(patternmaybeop);}
      if (type == "atom") return cont(patternmaybeop);
      if (type == "op") return cont(pattern);
      if (type.match(/[\]\)\};,]/)) return pass();
      return matchBrackets(type, pattern);
    }
    function patternmaybeop(type) {
      if (type == "op" && content == ".") return cont();
      if (content == "to") {cx.marked = "keyword"; return cont(pattern);}
      else return pass();
    }
    function altbody(type) {
      if (type == "{") return cont(pushlex("}", "alt"), altblock1, poplex);
      return pass();
    }
    function altblock1(type) {
      if (type == "}") return cont();
      if (type == "|") return cont(altblock1);
      if (content == "when") {cx.marked = "keyword"; return cont(expression, altblock2);}
      if (type.match(/[\]\);,]/)) return cont(altblock1);
      return pass(pattern, altblock2);
    }
    function altblock2(type) {
      if (type == "{") return cont(pushlex("}", "alt"), block, poplex, altblock1);
      else return pass(altblock1);
    }
  
    function macro(type) {
      if (type.match(/[\[\(\{]/)) return matchBrackets(type, expression);
      return pass();
    }
    function matchBrackets(type, comb) {
      if (type == "[") return cont(pushlex("]"), commasep(comb, "]"), poplex);
      if (type == "(") return cont(pushlex(")"), commasep(comb, ")"), poplex);
      if (type == "{") return cont(pushlex("}"), commasep(comb, "}"), poplex);
      return cont();
    }
  
    function parse(state, stream, style) {
      var cc = state.cc;
      // Communicate our context to the combinators.
      // (Less wasteful than consing up a hundred closures on every call.)
      cx.state = state; cx.stream = stream; cx.marked = null, cx.cc = cc;
  
      while (true) {
        var combinator = cc.length ? cc.pop() : block;
        if (combinator(tcat)) {
          while(cc.length && cc[cc.length - 1].lex)
            cc.pop()();
          return cx.marked || style;
        }
      }
    }
  
    return {
      startState: function() {
        return {
          tokenize: tokenBase,
          cc: [],
          lexical: {indented: -indentUnit, column: 0, type: "top", align: false},
          keywords: valKeywords,
          indented: 0
        };
      },
  
      token: function(stream, state) {
        if (stream.sol()) {
          if (!state.lexical.hasOwnProperty("align"))
            state.lexical.align = false;
          state.indented = stream.indentation();
        }
        if (stream.eatSpace()) return null;
        tcat = content = null;
        var style = state.tokenize(stream, state);
        if (style == "comment") return style;
        if (!state.lexical.hasOwnProperty("align"))
          state.lexical.align = true;
        if (tcat == "prefix") return style;
        if (!content) content = stream.current();
        return parse(state, stream, style);
      },
  
      indent: function(state, textAfter) {
        if (state.tokenize != tokenBase) return 0;
        var firstChar = textAfter && textAfter.charAt(0), lexical = state.lexical,
            type = lexical.type, closing = firstChar == type;
        if (type == "stat") return lexical.indented + indentUnit;
        if (lexical.align) return lexical.column + (closing ? 0 : 1);
        return lexical.indented + (closing ? 0 : (lexical.info == "alt" ? altIndentUnit : indentUnit));
      },
  
      electricChars: "{}"
    };
  });
  
  CodeMirror.defineMIME("text/x-rustsrc", "rust");
  


(C) Æliens 04/09/2009

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