/*
Language: Clojure
Description: Clojure syntax (based on lisp.js)
Author: mfornos
Website: https://clojure.org
Category: lisp
*/

/** @type LanguageFn */
export default function(hljs) {
  const SYMBOLSTART = 'a-zA-Z_\\-!.?+*=<>&\'';
  const SYMBOL_RE = '[#]?[' + SYMBOLSTART + '][' + SYMBOLSTART + '0-9/;:$#]*';
  const globals = 'def defonce defprotocol defstruct defmulti defmethod defn- defn defmacro deftype defrecord';
  const keywords = {
    $pattern: SYMBOL_RE,
    built_in:
      // Clojure keywords
      globals + ' '
      + 'cond apply if-not if-let if not not= =|0 <|0 >|0 <=|0 >=|0 ==|0 +|0 /|0 *|0 -|0 rem '
      + 'quot neg? pos? delay? symbol? keyword? true? false? integer? empty? coll? list? '
      + 'set? ifn? fn? associative? sequential? sorted? counted? reversible? number? decimal? '
      + 'class? distinct? isa? float? rational? reduced? ratio? odd? even? char? seq? vector? '
      + 'string? map? nil? contains? zero? instance? not-every? not-any? libspec? -> ->> .. . '
      + 'inc compare do dotimes mapcat take remove take-while drop letfn drop-last take-last '
      + 'drop-while while intern condp case reduced cycle split-at split-with repeat replicate '
      + 'iterate range merge zipmap declare line-seq sort comparator sort-by dorun doall nthnext '
      + 'nthrest partition eval doseq await await-for let agent atom send send-off release-pending-sends '
      + 'add-watch mapv filterv remove-watch agent-error restart-agent set-error-handler error-handler '
      + 'set-error-mode! error-mode shutdown-agents quote var fn loop recur throw try monitor-enter '
      + 'monitor-exit macroexpand macroexpand-1 for dosync and or '
      + 'when when-not when-let comp juxt partial sequence memoize constantly complement identity assert '
      + 'peek pop doto proxy first rest cons cast coll last butlast '
      + 'sigs reify second ffirst fnext nfirst nnext meta with-meta ns in-ns create-ns import '
      + 'refer keys select-keys vals key val rseq name namespace promise into transient persistent! conj! '
      + 'assoc! dissoc! pop! disj! use class type num float double short byte boolean bigint biginteger '
      + 'bigdec print-method print-dup throw-if printf format load compile get-in update-in pr pr-on newline '
      + 'flush read slurp read-line subvec with-open memfn time re-find re-groups rand-int rand mod locking '
      + 'assert-valid-fdecl alias resolve ref deref refset swap! reset! set-validator! compare-and-set! alter-meta! '
      + 'reset-meta! commute get-validator alter ref-set ref-history-count ref-min-history ref-max-history ensure sync io! '
      + 'new next conj set! to-array future future-call into-array aset gen-class reduce map filter find empty '
      + 'hash-map hash-set sorted-map sorted-map-by sorted-set sorted-set-by vec vector seq flatten reverse assoc dissoc list '
      + 'disj get union difference intersection extend extend-type extend-protocol int nth delay count concat chunk chunk-buffer '
      + 'chunk-append chunk-first chunk-rest max min dec unchecked-inc-int unchecked-inc unchecked-dec-inc unchecked-dec unchecked-negate '
      + 'unchecked-add-int unchecked-add unchecked-subtract-int unchecked-subtract chunk-next chunk-cons chunked-seq? prn vary-meta '
      + 'lazy-seq spread list* str find-keyword keyword symbol gensym force rationalize'
  };

  const SYMBOL = {
    begin: SYMBOL_RE,
    relevance: 0
  };
  const NUMBER = {
    scope: 'number',
    relevance: 0,
    variants: [
      { match: /[-+]?0[xX][0-9a-fA-F]+N?/ }, // hexadecimal                 // 0x2a
      { match: /[-+]?0[0-7]+N?/ }, // octal                       // 052
      { match: /[-+]?[1-9][0-9]?[rR][0-9a-zA-Z]+N?/ }, // variable radix from 2 to 36 // 2r101010, 8r52, 36r16
      { match: /[-+]?[0-9]+\/[0-9]+N?/ }, // ratio                       // 1/2
      { match: /[-+]?[0-9]+((\.[0-9]*([eE][+-]?[0-9]+)?M?)|([eE][+-]?[0-9]+M?|M))/ }, // float        // 0.42 4.2E-1M 42E1 42M
      { match: /[-+]?([1-9][0-9]*|0)N?/ }, // int (don't match leading 0) // 42 42N
    ]
  };
  const CHARACTER = {
    scope: 'character',
    variants: [
      { match: /\\o[0-3]?[0-7]{1,2}/ }, // Unicode Octal 0 - 377
      { match: /\\u[0-9a-fA-F]{4}/ }, // Unicode Hex 0000 - FFFF
      { match: /\\(newline|space|tab|formfeed|backspace|return)/ }, // special characters
      {
        match: /\\\S/,
        relevance: 0
      } // any non-whitespace char
    ]
  };
  const REGEX = {
    scope: 'regex',
    begin: /#"/,
    end: /"/,
    contains: [ hljs.BACKSLASH_ESCAPE ]
  };
  const STRING = hljs.inherit(hljs.QUOTE_STRING_MODE, { illegal: null });
  const COMMA = {
    scope: 'punctuation',
    match: /,/,
    relevance: 0
  };
  const COMMENT = hljs.COMMENT(
    ';',
    '$',
    { relevance: 0 }
  );
  const LITERAL = {
    className: 'literal',
    begin: /\b(true|false|nil)\b/
  };
  const COLLECTION = {
    begin: "\\[|(#::?" + SYMBOL_RE + ")?\\{",
    end: '[\\]\\}]',
    relevance: 0
  };
  const KEY = {
    className: 'symbol',
    begin: '[:]{1,2}' + SYMBOL_RE
  };
  const LIST = {
    begin: '\\(',
    end: '\\)'
  };
  const BODY = {
    endsWithParent: true,
    relevance: 0
  };
  const NAME = {
    keywords: keywords,
    className: 'name',
    begin: SYMBOL_RE,
    relevance: 0,
    starts: BODY
  };
  const DEFAULT_CONTAINS = [
    COMMA,
    LIST,
    CHARACTER,
    REGEX,
    STRING,
    COMMENT,
    KEY,
    COLLECTION,
    NUMBER,
    LITERAL,
    SYMBOL
  ];

  const GLOBAL = {
    beginKeywords: globals,
    keywords: {
      $pattern: SYMBOL_RE,
      keyword: globals
    },
    end: '(\\[|#|\\d|"|:|\\{|\\)|\\(|$)',
    contains: [
      {
        className: 'title',
        begin: SYMBOL_RE,
        relevance: 0,
        excludeEnd: true,
        // we can only have a single title
        endsParent: true
      }
    ].concat(DEFAULT_CONTAINS)
  };

  LIST.contains = [
    GLOBAL,
    NAME,
    BODY
  ];
  BODY.contains = DEFAULT_CONTAINS;
  COLLECTION.contains = DEFAULT_CONTAINS;

  return {
    name: 'Clojure',
    aliases: [
      'clj',
      'edn'
    ],
    illegal: /\S/,
    contains: [
      COMMA,
      LIST,
      CHARACTER,
      REGEX,
      STRING,
      COMMENT,
      KEY,
      COLLECTION,
      NUMBER,
      LITERAL
    ]
  };
}
