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// CodeMirror, copyright (c) by Marijn Haverbeke and others
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// Distributed under an MIT license: https://codemirror.net/LICENSE
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(function(mod) {
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  if (typeof exports == "object" && typeof module == "object") // CommonJS
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    mod(require("../../lib/codemirror"));
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  else if (typeof define == "function" && define.amd) // AMD
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    define(["../../lib/codemirror"], mod);
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  else // Plain browser env
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    mod(CodeMirror);
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})(function(CodeMirror) {
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"use strict";
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function forEach(arr, f) {
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  for (var i = 0; i < arr.length; i++) f(arr[i], i)
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}
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function some(arr, f) {
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  for (var i = 0; i < arr.length; i++) if (f(arr[i], i)) return true
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  return false
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}
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CodeMirror.defineMode("dylan", function(_config) {
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  // Words
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  var words = {
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    // Words that introduce unnamed definitions like "define interface"
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    unnamedDefinition: ["interface"],
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    // Words that introduce simple named definitions like "define library"
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    namedDefinition: ["module", "library", "macro",
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                      "C-struct", "C-union",
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                      "C-function", "C-callable-wrapper"
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                     ],
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    // Words that introduce type definitions like "define class".
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    // These are also parameterized like "define method" and are
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    // appended to otherParameterizedDefinitionWords
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    typeParameterizedDefinition: ["class", "C-subtype", "C-mapped-subtype"],
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    // Words that introduce trickier definitions like "define method".
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    // These require special definitions to be added to startExpressions
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    otherParameterizedDefinition: ["method", "function",
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                                   "C-variable", "C-address"
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                                  ],
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    // Words that introduce module constant definitions.
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    // These must also be simple definitions and are
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    // appended to otherSimpleDefinitionWords
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    constantSimpleDefinition: ["constant"],
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    // Words that introduce module variable definitions.
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    // These must also be simple definitions and are
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    // appended to otherSimpleDefinitionWords
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    variableSimpleDefinition: ["variable"],
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    // Other words that introduce simple definitions
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    // (without implicit bodies).
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    otherSimpleDefinition: ["generic", "domain",
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                            "C-pointer-type",
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                            "table"
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                           ],
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    // Words that begin statements with implicit bodies.
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    statement: ["if", "block", "begin", "method", "case",
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                "for", "select", "when", "unless", "until",
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                "while", "iterate", "profiling", "dynamic-bind"
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               ],
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    // Patterns that act as separators in compound statements.
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    // This may include any general pattern that must be indented
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    // specially.
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    separator: ["finally", "exception", "cleanup", "else",
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                "elseif", "afterwards"
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               ],
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    // Keywords that do not require special indentation handling,
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    // but which should be highlighted
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    other: ["above", "below", "by", "from", "handler", "in",
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            "instance", "let", "local", "otherwise", "slot",
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            "subclass", "then", "to", "keyed-by", "virtual"
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           ],
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    // Condition signaling function calls
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    signalingCalls: ["signal", "error", "cerror",
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                     "break", "check-type", "abort"
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                    ]
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  };
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  words["otherDefinition"] =
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    words["unnamedDefinition"]
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    .concat(words["namedDefinition"])
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    .concat(words["otherParameterizedDefinition"]);
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  words["definition"] =
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    words["typeParameterizedDefinition"]
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    .concat(words["otherDefinition"]);
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  words["parameterizedDefinition"] =
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    words["typeParameterizedDefinition"]
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    .concat(words["otherParameterizedDefinition"]);
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  words["simpleDefinition"] =
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    words["constantSimpleDefinition"]
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    .concat(words["variableSimpleDefinition"])
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    .concat(words["otherSimpleDefinition"]);
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  words["keyword"] =
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    words["statement"]
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    .concat(words["separator"])
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    .concat(words["other"]);
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  // Patterns
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  var symbolPattern = "[-_a-zA-Z?!*@<>$%]+";
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  var symbol = new RegExp("^" + symbolPattern);
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  var patterns = {
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    // Symbols with special syntax
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    symbolKeyword: symbolPattern + ":",
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    symbolClass: "<" + symbolPattern + ">",
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    symbolGlobal: "\\*" + symbolPattern + "\\*",
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    symbolConstant: "\\$" + symbolPattern
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  };
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  var patternStyles = {
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    symbolKeyword: "atom",
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    symbolClass: "tag",
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    symbolGlobal: "variable-2",
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    symbolConstant: "variable-3"
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  };
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  // Compile all patterns to regular expressions
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  for (var patternName in patterns)
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    if (patterns.hasOwnProperty(patternName))
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      patterns[patternName] = new RegExp("^" + patterns[patternName]);
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  // Names beginning "with-" and "without-" are commonly
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  // used as statement macro
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  patterns["keyword"] = [/^with(?:out)?-[-_a-zA-Z?!*@<>$%]+/];
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  var styles = {};
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  styles["keyword"] = "keyword";
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  styles["definition"] = "def";
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  styles["simpleDefinition"] = "def";
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  styles["signalingCalls"] = "builtin";
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  // protected words lookup table
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  var wordLookup = {};
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  var styleLookup = {};
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  forEach([
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    "keyword",
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    "definition",
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    "simpleDefinition",
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    "signalingCalls"
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  ], function(type) {
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    forEach(words[type], function(word) {
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      wordLookup[word] = type;
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      styleLookup[word] = styles[type];
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    });
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  });
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  function chain(stream, state, f) {
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    state.tokenize = f;
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    return f(stream, state);
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  }
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  function tokenBase(stream, state) {
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    // String
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    var ch = stream.peek();
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    if (ch == "'" || ch == '"') {
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      stream.next();
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      return chain(stream, state, tokenString(ch, "string"));
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    }
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    // Comment
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    else if (ch == "/") {
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      stream.next();
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      if (stream.eat("*")) {
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        return chain(stream, state, tokenComment);
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      } else if (stream.eat("/")) {
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        stream.skipToEnd();
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        return "comment";
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      }
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      stream.backUp(1);
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    }
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    // Decimal
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    else if (/[+\-\d\.]/.test(ch)) {
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      if (stream.match(/^[+-]?[0-9]*\.[0-9]*([esdx][+-]?[0-9]+)?/i) ||
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          stream.match(/^[+-]?[0-9]+([esdx][+-]?[0-9]+)/i) ||
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          stream.match(/^[+-]?\d+/)) {
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        return "number";
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      }
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    }
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    // Hash
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    else if (ch == "#") {
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      stream.next();
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      // Symbol with string syntax
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      ch = stream.peek();
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      if (ch == '"') {
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        stream.next();
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        return chain(stream, state, tokenString('"', "string"));
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      }
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      // Binary number
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      else if (ch == "b") {
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        stream.next();
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        stream.eatWhile(/[01]/);
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        return "number";
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      }
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      // Hex number
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      else if (ch == "x") {
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        stream.next();
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        stream.eatWhile(/[\da-f]/i);
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        return "number";
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      }
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      // Octal number
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      else if (ch == "o") {
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        stream.next();
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        stream.eatWhile(/[0-7]/);
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        return "number";
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      }
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      // Token concatenation in macros
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      else if (ch == '#') {
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        stream.next();
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        return "punctuation";
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      }
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      // Sequence literals
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      else if ((ch == '[') || (ch == '(')) {
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        stream.next();
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        return "bracket";
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      // Hash symbol
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      } else if (stream.match(/f|t|all-keys|include|key|next|rest/i)) {
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        return "atom";
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      } else {
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        stream.eatWhile(/[-a-zA-Z]/);
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        return "error";
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      }
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    } else if (ch == "~") {
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      stream.next();
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      ch = stream.peek();
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      if (ch == "=") {
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        stream.next();
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        ch = stream.peek();
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        if (ch == "=") {
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          stream.next();
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          return "operator";
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        }
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        return "operator";
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      }
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      return "operator";
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    } else if (ch == ":") {
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      stream.next();
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      ch = stream.peek();
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      if (ch == "=") {
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        stream.next();
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        return "operator";
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      } else if (ch == ":") {
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        stream.next();
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        return "punctuation";
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      }
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    } else if ("[](){}".indexOf(ch) != -1) {
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      stream.next();
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      return "bracket";
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    } else if (".,".indexOf(ch) != -1) {
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      stream.next();
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      return "punctuation";
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    } else if (stream.match("end")) {
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      return "keyword";
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    }
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    for (var name in patterns) {
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      if (patterns.hasOwnProperty(name)) {
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        var pattern = patterns[name];
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        if ((pattern instanceof Array && some(pattern, function(p) {
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          return stream.match(p);
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        })) || stream.match(pattern))
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          return patternStyles[name];
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      }
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    }
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    if (/[+\-*\/^=<>&|]/.test(ch)) {
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      stream.next();
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      return "operator";
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    }
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    if (stream.match("define")) {
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      return "def";
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    } else {
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      stream.eatWhile(/[\w\-]/);
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      // Keyword
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      if (wordLookup.hasOwnProperty(stream.current())) {
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        return styleLookup[stream.current()];
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      } else if (stream.current().match(symbol)) {
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        return "variable";
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      } else {
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        stream.next();
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        return "variable-2";
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      }
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    }
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  }
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  function tokenComment(stream, state) {
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    var maybeEnd = false, maybeNested = false, nestedCount = 0, ch;
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    while ((ch = stream.next())) {
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      if (ch == "/" && maybeEnd) {
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        if (nestedCount > 0) {
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          nestedCount--;
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        } else {
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          state.tokenize = tokenBase;
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          break;
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        }
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      } else if (ch == "*" && maybeNested) {
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        nestedCount++;
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      }
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      maybeEnd = (ch == "*");
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      maybeNested = (ch == "/");
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    }
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    return "comment";
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  }
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  function tokenString(quote, style) {
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    return function(stream, state) {
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      var escaped = false, next, end = false;
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      while ((next = stream.next()) != null) {
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        if (next == quote && !escaped) {
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          end = true;
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          break;
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        }
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        escaped = !escaped && next == "\\";
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      }
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      if (end || !escaped) {
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        state.tokenize = tokenBase;
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      }
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      return style;
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    };
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  }
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  // Interface
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  return {
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    startState: function() {
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      return {
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        tokenize: tokenBase,
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        currentIndent: 0
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      };
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    },
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    token: function(stream, state) {
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      if (stream.eatSpace())
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        return null;
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      var style = state.tokenize(stream, state);
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      return style;
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    },
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    blockCommentStart: "/*",
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    blockCommentEnd: "*/"
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  };
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});
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CodeMirror.defineMIME("text/x-dylan", "dylan");
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});
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