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// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://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("groovy", function(config) {
  function words(str) {
    var obj = {}, words = str.split(" ");
    for (var i = 0; i < words.length; ++i) obj[words[i]] = true;
    return obj;
  }
  var keywords = words(
    "abstract as assert boolean break byte case catch char class const continue def default " +
    "do double else enum extends final finally float for goto if implements import in " +
    "instanceof int interface long native new package private protected public return " +
    "short static strictfp super switch synchronized threadsafe throw throws trait transient " +
    "try void volatile while");
  var blockKeywords = words("catch class def do else enum finally for if interface switch trait try while");
  var standaloneKeywords = words("return break continue");
  var atoms = words("null true false this");

var curPunc;
  function tokenBase(stream, state) {
    var ch = stream.next();
    if (ch == '"' || ch == "'") {
      return startString(ch, stream, state);
    }
    if (/[\[\]{},;\:\.]/.test(ch)) {
      curPunc = ch;
      return null;
    }
    if (/\d/.test(ch)) {
      stream.eatWhile(/[\w\.]/);
      if (stream.eat(/eE/)) { stream.eat(/\+\-/); stream.eatWhile(/\d/); }
      return "number";
    }
    if (ch == "/") {
      if (stream.eat("*")) {
        state.tokenize.push(tokenComment);
        return tokenComment(stream, state);
      }
      if (stream.eat("/")) {
        stream.skipToEnd();
        return "comment";
      }
      if (expectExpression(state.lastToken, false)) {
        return startString(ch, stream, state);
      }
    }
    if (ch == "-" && stream.eat(">")) {
      curPunc = "->";
      return null;
    }
    if (/[+\-*&%=<>!?|\/~]/.test(ch)) {
      stream.eatWhile(/[+\-*&%=<>|~]/);
      return "operator";
    }
    stream.eatWhile(/[\w\$_]/);
    if (ch == "@") { stream.eatWhile(/[\w\$_\.]/); return "meta"; }
    if (state.lastToken == ".") return "property";
    if (stream.eat(":")) { curPunc = "proplabel"; return "property"; }
    var cur = stream.current();
    if (atoms.propertyIsEnumerable(cur)) { return "atom"; }
    if (keywords.propertyIsEnumerable(cur)) {
      if (blockKeywords.propertyIsEnumerable(cur)) curPunc = "newstatement";
      else if (standaloneKeywords.propertyIsEnumerable(cur)) curPunc = "standalone";
      return "keyword";
    }
    return "variable";
  }
  tokenBase.isBase = true;

function expectExpression(last, newline) {
    return !last || last == "operator" || last == "->" || /[\.\[\{\(,;:]/.test(last) ||
      last == "newstatement" || last == "keyword" || last == "proplabel" ||
      (last == "standalone" && !newline);
  }

// Interface

return {
    startState: function(basecolumn) {
      return {
        tokenize: [tokenBase],
        context: new Context((basecolumn || 0) - config.indentUnit, 0, "top", false),
        indented: 0,
        startOfLine: true,
        lastToken: null
      };
    },

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;
        // Automatic semicolon insertion
        if (ctx.type == "statement" && !expectExpression(state.lastToken, true)) {
          popContext(state); ctx = state.context;
        }
      }
      if (stream.eatSpace()) return null;
      curPunc = null;
      var style = state.tokenize[state.tokenize.length-1](stream, state);
      if (style == "comment") return style;
      if (ctx.align == null) ctx.align = true;

if ((curPunc == ";" || curPunc == ":") && ctx.type == "statement") popContext(state);
      // Handle indentation for {x -> \n ... }
      else if (curPunc == "->" && ctx.type == "statement" && ctx.prev.type == "}") {
        popContext(state);
        state.context.align = false;
      }
      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;
      state.lastToken = curPunc || style;
      return style;
    },

indent: function(state, textAfter) {
      if (!state.tokenize[state.tokenize.length-1].isBase) return CodeMirror.Pass;
      var firstChar = textAfter && textAfter.charAt(0), ctx = state.context;
      if (ctx.type == "statement" && !expectExpression(state.lastToken, true)) ctx = ctx.prev;
      var closing = firstChar == ctx.type;
      if (ctx.type == "statement") return ctx.indented + (firstChar == "{" ? 0 : config.indentUnit);
      else if (ctx.align) return ctx.column + (closing ? 0 : 1);
      else return ctx.indented + (closing ? 0 : config.indentUnit);
    },

electricChars: "{}",
    closeBrackets: {triples: "'\""},
    fold: "brace",
    blockCommentStart: "/*",
    blockCommentEnd: "*/",
    lineComment: "//"
  };
});

CodeMirror.defineMIME("text/x-groovy", "groovy");

});