// CodeMirror, copyright © by Marijn Haverbeke and others // Distributed under an MIT license: 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(“rust”, function() {

var indentUnit = 4, altIndentUnit = 2;
var valKeywords = {
  "if": "if-style", "while": "if-style", "loop": "else-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", "struct": "enum"
};
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() {
  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() {
  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() {
  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: "{}",
  blockCommentStart: "/*",
  blockCommentEnd: "*/",
  lineComment: "//",
  fold: "brace"
};

});

CodeMirror.defineMIME(“text/x-rustsrc”, “rust”);

});