// 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"),  require("../../addon/mode/multiplex"));
else if (typeof define == "function" && define.amd) // AMD
  define(["../../lib/codemirror", "../../addon/mode/multiplex"], mod);
else // Plain browser env
  mod(CodeMirror);

})(function(CodeMirror) {

"use strict";

CodeMirror.defineMode("twig:inner", function() {
  var keywords = ["and", "as", "autoescape", "endautoescape", "block", "do", "endblock", "else", "elseif", "extends", "for", "endfor", "embed", "endembed", "filter", "endfilter", "flush", "from", "if", "endif", "in", "is", "include", "import", "not", "or", "set", "spaceless", "endspaceless", "with", "endwith", "trans", "endtrans", "blocktrans", "endblocktrans", "macro", "endmacro", "use", "verbatim", "endverbatim"],
      operator = /^[+\-*&%=<>!?|~^]/,
      sign = /^[:\[\(\{]/,
      atom = ["true", "false", "null", "empty", "defined", "divisibleby", "divisible by", "even", "odd", "iterable", "sameas", "same as"],
      number = /^(\d[+\-\*\/])?\d+(\.\d+)?/;

  keywords = new RegExp("((" + keywords.join(")|(") + "))\\b");
  atom = new RegExp("((" + atom.join(")|(") + "))\\b");

  function tokenBase (stream, state) {
    var ch = stream.peek();

    //Comment
    if (state.incomment) {
      if (!stream.skipTo("#}")) {
        stream.skipToEnd();
      } else {
        stream.eatWhile(/\#|}/);
        state.incomment = false;
      }
      return "comment";
    //Tag
    } else if (state.intag) {
      //After operator
      if (state.operator) {
        state.operator = false;
        if (stream.match(atom)) {
          return "atom";
        }
        if (stream.match(number)) {
          return "number";
        }
      }
      //After sign
      if (state.sign) {
        state.sign = false;
        if (stream.match(atom)) {
          return "atom";
        }
        if (stream.match(number)) {
          return "number";
        }
      }

      if (state.instring) {
        if (ch == state.instring) {
          state.instring = false;
        }
        stream.next();
        return "string";
      } else if (ch == "'" || ch == '"') {
        state.instring = ch;
        stream.next();
        return "string";
      } else if (stream.match(state.intag + "}") || stream.eat("-") && stream.match(state.intag + "}")) {
        state.intag = false;
        return "tag";
      } else if (stream.match(operator)) {
        state.operator = true;
        return "operator";
      } else if (stream.match(sign)) {
        state.sign = true;
      } else {
        if (stream.eat(" ") || stream.sol()) {
          if (stream.match(keywords)) {
            return "keyword";
          }
          if (stream.match(atom)) {
            return "atom";
          }
          if (stream.match(number)) {
            return "number";
          }
          if (stream.sol()) {
            stream.next();
          }
        } else {
          stream.next();
        }

      }
      return "variable";
    } else if (stream.eat("{")) {
      if (stream.eat("#")) {
        state.incomment = true;
        if (!stream.skipTo("#}")) {
          stream.skipToEnd();
        } else {
          stream.eatWhile(/\#|}/);
          state.incomment = false;
        }
        return "comment";
      //Open tag
      } else if (ch = stream.eat(/\{|%/)) {
        //Cache close tag
        state.intag = ch;
        if (ch == "{") {
          state.intag = "}";
        }
        stream.eat("-");
        return "tag";
      }
    }
    stream.next();
  };

  return {
    startState: function () {
      return {};
    },
    token: function (stream, state) {
      return tokenBase(stream, state);
    }
  };
});

CodeMirror.defineMode("twig", function(config, parserConfig) {
  var twigInner = CodeMirror.getMode(config, "twig:inner");
  if (!parserConfig || !parserConfig.base) return twigInner;
  return CodeMirror.multiplexingMode(
    CodeMirror.getMode(config, parserConfig.base), {
      open: /\{[{#%]/, close: /[}#%]\}/, mode: twigInner, parseDelimiters: true
    }
  );
});
CodeMirror.defineMIME("text/x-twig", "twig");

});