1/**
2 * @license
3 * Copyright (C) 2017 Jacek Królikowski
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 *    http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18/**
19 * @fileoverview
20 * Registers a language handler for Elixir.
21 *
22 * @author nietaki@gmail.com
23 */
24
25PR['registerLangHandler'](
26    PR['createSimpleLexer'](
27        [
28         [PR['PR_PLAIN'], /^[\t\n\r \xA0]+/, null, '\t\n\r \xA0'],
29         // # comments
30         [PR['PR_COMMENT'], /^#.*/, null, '#'],
31         // a (possibly multiline) charlist
32         [PR['PR_LITERAL'], /^'(?:[^'\\]|\\(?:.|\n|\r))*'?/, null, '\''],
33         // @attributes
34         [PR['PR_ATTRIB_NAME'], /^@\w+/, null, '@'],
35         [PR['PR_PUNCTUATION'], /^[!%&()*+,\-;<=>?\[\\\]^{|}]+/, null,
36          '!%&()*+,-;<=>?[\\]^{|}'],
37         // Borrowed from lang-erlang.js:
38         [PR['PR_LITERAL'],
39          /^(?:0o[0-7](?:[0-7]|_[0-7])*|0x[\da-fA-F](?:[\da-fA-F]|_[\da-fA-F])*|\d(?:\d|_\d)*(?:\.\d(?:\d|_\d)*)?(?:[eE][+\-]?\d(?:\d|_\d)*)?)/,
40          null, '0123456789']
41        ],
42        [
43         // the iex> prompt for interactive examples
44         [PR['PR_ATTRIB_NAME'], /^iex(?:\(\d+\))?> /],
45         // special case for binaries, so that they don't get presented like atoms
46         [PR['PR_PUNCTUATION'], /^::/],
47         // atoms - :__a_word or :"colon followed by a string"
48         [PR['PR_LITERAL'], /^:(?:\w+[\!\?\@]?|"(?:[^"\\]|\\.)*"?)/],
49         // compile-time information
50         [PR['PR_ATTRIB_NAME'], /^(?:__(?:CALLER|ENV|MODULE|DIR)__)/],
51         // keywords
52         [PR['PR_KEYWORD'],
53          /^(?:alias|case|catch|def(?:delegate|exception|impl|macrop?|module|overridable|p?|protocol|struct)|do|else|end|fn|for|if|in|import|quote|raise|require|rescue|super|throw|try|unless|unquote(?:_splicing)?|use|when|with|yield)\b/],
54         [PR['PR_LITERAL'], /^(?:true|false|nil)\b/],
55         // atoms as keyword list keys
56         // NOTE: this does also handle the %{"I'm an atom": :foo} case
57         //
58         // Contains negative lookahead to handle <<foo::binary>>
59         [PR['PR_LITERAL'], /^(?:\w+[\!\?\@]?|"(?:[^"\\]|\\.)*"):(?!:)/],
60         // heredoc: triple double-quoted multi-line string.
61         //
62         // NOTE: the opening """ needs to be followed by a newline
63         [PR['PR_STRING'],
64          /^"""\s*(\r|\n)+(?:""?(?!")|[^\\"]|\\(?:.|\n|\r))*"{0,3}/],
65         // A double-quoted multi-line string
66         [PR['PR_STRING'],
67          /^"(?:[^"\\]|\\(?:.|\n|\r))*"?(?!")/],
68         // types
69         [PR['PR_TYPE'], /^[A-Z]\w*/],
70         // variables not meant to be used or private functions
71         [PR['PR_COMMENT'], /^_\w*/],
72         // plain: variables, functions, ...
73         [PR['PR_PLAIN'], /^[$a-z]\w*[\!\?]?/],
74         // sigils with the same starting and ending character.
75         // Key part: X(?:[^X\r\n\\]|\\.)+X where X is the sigil character
76         [PR['PR_ATTRIB_VALUE'], /^~[A-Z](?:\/(?:[^\/\r\n\\]|\\.)+\/|\|(?:[^\|\r\n\\]|\\.)+\||"(?:[^"\r\n\\]|\\.)+"|'(?:[^'\r\n\\]|\\.)+')[A-Z]*/i],
77         // sigils with a different starting and ending character.
78         // Key part: X(?:[^Y\r\n\\]|\\.)+Y where X and Y are the starting and ending characters
79         [PR['PR_ATTRIB_VALUE'], /^~[A-Z](?:\((?:[^\)\r\n\\]|\\.)+\)|\[(?:[^\]\r\n\\]|\\.)+\]|\{(?:[^\}\r\n\\]|\\.)+\}|\<(?:[^\>\r\n\\]|\\.)+\>)[A-Z]*/i],
80         [PR['PR_PUNCTUATION'], /^(?:\.+|\/|[:~])/]
81        ]),
82    ['ex','exs']);
83