summaryrefslogtreecommitdiff
path: root/pygments/lexers/j.py
blob: 1231d597d042b31505833722c9f151be9a6acfc1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
# -*- coding: utf-8 -*-
"""
    pygments.lexers.j
    ~~~~~~~~~~~~~~~~~

    Lexer for the J programming language.

    :copyright: Copyright 2006-2015 by the Pygments team, see AUTHORS.
    :license: BSD, see LICENSE for details.
"""

from pygments.lexer import RegexLexer, words, include
from pygments.token import Comment, Keyword, Name, Number, Operator, Punctuation, \
    String, Text

__all__ = ['JLexer']


class JLexer(RegexLexer):
    """
    For `J <http://jsoftware.com/>`_ source code.

    .. versionadded:: 2.1
    """

    name = 'J'
    aliases = ['j']
    filenames = ['*.ijs']
    mimetypes = ['text/x-j']

    validName = r'\b[a-zA-Z]\w*'

    tokens = {
        'root': [
            # Shebang script
            (r'#!.*$', Comment.Preproc),

            # Comments
            (r'NB\..*', Comment.Single),
            (r'\n+\s*Note', Comment.Multiline, 'comment'),
            (r'\s*Note.*', Comment.Single),

            # Whitespace
            (r'\s+', Text),

            # Strings
            (r"'", String, 'singlequote'),

            # Definitions
            (r'0\s+:\s*0|noun\s+define\s*$', Name.Entity, 'nounDefinition'),
            (r'(([1-4]|13)\s+:\s*0|(adverb|conjunction|dyad|monad|verb)\s+define)\b',
             Name.Function, 'explicitDefinition'),

            # Flow Control
            (words(('for_', 'goto_', 'label_'), suffix=validName+'\.'), Name.Label),
            (words((
                'assert', 'break', 'case', 'catch', 'catchd',
                'catcht', 'continue', 'do', 'else', 'elseif',
                'end', 'fcase', 'for', 'if', 'return',
                'select', 'throw', 'try', 'while', 'whilst',
                ), suffix='\.'), Name.Label),

            # Variable Names
            (validName, Name.Variable),

            # Standard Library
            (words((
                'ARGV', 'CR', 'CRLF', 'DEL', 'Debug',
                'EAV', 'EMPTY', 'FF', 'JVERSION', 'LF',
                'LF2', 'Note', 'TAB', 'alpha17', 'alpha27',
                'apply', 'bind', 'boxopen', 'boxxopen', 'bx',
                'clear', 'cutLF', 'cutopen', 'datatype', 'def',
                'dfh', 'drop', 'each', 'echo', 'empty',
                'erase', 'every', 'evtloop', 'exit', 'expand',
                'fetch', 'file2url', 'fixdotdot', 'fliprgb', 'getargs',
                'getenv', 'hfd', 'inv', 'inverse', 'iospath',
                'isatty', 'isutf8', 'items', 'leaf', 'list',
                'nameclass', 'namelist', 'names', 'nc',
                'nl', 'on', 'pick', 'rows',
                'script', 'scriptd', 'sign', 'sminfo', 'smoutput',
                'sort', 'split', 'stderr', 'stdin', 'stdout',
                'table', 'take', 'timespacex', 'timex', 'tmoutput',
                'toCRLF', 'toHOST', 'toJ', 'tolower', 'toupper',
                'type', 'ucp', 'ucpcount', 'usleep', 'utf8',
                'uucp',
                )), Name.Function),

            # Copula
            (r'=[.:]', Operator),

            # Builtins
            (r'[-=+*#$%@!~`^&";:.,<>{}\[\]\\|/]', Operator),

            # Short Keywords
            (r'[abCdDeEfHiIjLMoprtT]\.',  Keyword.Reserved),
            (r'[aDiLpqsStux]\:', Keyword.Reserved),
            (r'(_[0-9])\:', Keyword.Constant),

            # Parens
            (r'\(', Punctuation, 'parentheses'),

            # Numbers
            include('numbers'),
        ],

        'comment': [
            (r'[^)]', Comment.Multiline),
            (r'^\)', Comment.Multiline, '#pop'),
            (r'[)]', Comment.Multiline),
        ],

        'explicitDefinition': [
            (r'\b[nmuvxy]\b', Name.Decorator),
            include('root'),
            (r'[^)]', Name),
            (r'^\)', Name.Label, '#pop'),
            (r'[)]', Name),
        ],

        'numbers': [
            (r'\b_{1,2}\b', Number),
            (r'_?\d+(\.\d+)?(\s*[ejr]\s*)_?\d+(\.?=\d+)?', Number),
            (r'_?\d+\.(?=\d+)', Number.Float),
            (r'_?\d+x', Number.Integer.Long),
            (r'_?\d+', Number.Integer),
        ],

        'nounDefinition': [
            (r'[^)]', String),
            (r'^\)', Name.Label, '#pop'),
            (r'[)]', String),
        ],

        'parentheses': [
            (r'\)', Punctuation, '#pop'),
            # include('nounDefinition'),
            include('explicitDefinition'),
            include('root'),
        ],

        'singlequote': [
            (r"[^']", String),
            (r"''", String),
            (r"'", String, '#pop'),
        ],
    }