|
|
""" |
|
|
pygments.lexers.arrow |
|
|
~~~~~~~~~~~~~~~~~~~~~ |
|
|
|
|
|
Lexer for Arrow. |
|
|
|
|
|
:copyright: Copyright 2006-2025 by the Pygments team, see AUTHORS. |
|
|
:license: BSD, see LICENSE for details. |
|
|
""" |
|
|
|
|
|
from pygments.lexer import RegexLexer, bygroups, default, include |
|
|
from pygments.token import Text, Operator, Keyword, Punctuation, Name, \ |
|
|
String, Number, Whitespace |
|
|
|
|
|
__all__ = ['ArrowLexer'] |
|
|
|
|
|
TYPES = r'\b(int|bool|char)((?:\[\])*)(?=\s+)' |
|
|
IDENT = r'([a-zA-Z_][a-zA-Z0-9_]*)' |
|
|
DECL = TYPES + r'(\s+)' + IDENT |
|
|
|
|
|
|
|
|
class ArrowLexer(RegexLexer): |
|
|
""" |
|
|
Lexer for Arrow |
|
|
""" |
|
|
|
|
|
name = 'Arrow' |
|
|
url = 'https://pypi.org/project/py-arrow-lang/' |
|
|
aliases = ['arrow'] |
|
|
filenames = ['*.arw'] |
|
|
version_added = '2.7' |
|
|
|
|
|
tokens = { |
|
|
'root': [ |
|
|
(r'\s+', Whitespace), |
|
|
(r'^[|\s]+', Punctuation), |
|
|
include('blocks'), |
|
|
include('statements'), |
|
|
include('expressions'), |
|
|
], |
|
|
'blocks': [ |
|
|
(r'(function)(\n+)(/-->)(\s*)' + |
|
|
DECL + |
|
|
r'(\()', bygroups( |
|
|
Keyword.Reserved, Whitespace, Punctuation, |
|
|
Whitespace, Keyword.Type, Punctuation, Whitespace, |
|
|
Name.Function, Punctuation |
|
|
), 'fparams'), |
|
|
(r'/-->$|\\-->$|/--<|\\--<|\^', Punctuation), |
|
|
], |
|
|
'statements': [ |
|
|
(DECL, bygroups(Keyword.Type, Punctuation, Text, Name.Variable)), |
|
|
(r'\[', Punctuation, 'index'), |
|
|
(r'=', Operator), |
|
|
(r'require|main', Keyword.Reserved), |
|
|
(r'print', Keyword.Reserved, 'print'), |
|
|
], |
|
|
'expressions': [ |
|
|
(r'\s+', Whitespace), |
|
|
(r'[0-9]+', Number.Integer), |
|
|
(r'true|false', Keyword.Constant), |
|
|
(r"'", String.Char, 'char'), |
|
|
(r'"', String.Double, 'string'), |
|
|
(r'\{', Punctuation, 'array'), |
|
|
(r'==|!=|<|>|\+|-|\*|/|%', Operator), |
|
|
(r'and|or|not|length', Operator.Word), |
|
|
(r'(input)(\s+)(int|char\[\])', bygroups( |
|
|
Keyword.Reserved, Whitespace, Keyword.Type |
|
|
)), |
|
|
(IDENT + r'(\()', bygroups( |
|
|
Name.Function, Punctuation |
|
|
), 'fargs'), |
|
|
(IDENT, Name.Variable), |
|
|
(r'\[', Punctuation, 'index'), |
|
|
(r'\(', Punctuation, 'expressions'), |
|
|
(r'\)', Punctuation, '#pop'), |
|
|
], |
|
|
'print': [ |
|
|
include('expressions'), |
|
|
(r',', Punctuation), |
|
|
default('#pop'), |
|
|
], |
|
|
'fparams': [ |
|
|
(DECL, bygroups(Keyword.Type, Punctuation, Whitespace, Name.Variable)), |
|
|
(r',', Punctuation), |
|
|
(r'\)', Punctuation, '#pop'), |
|
|
], |
|
|
'escape': [ |
|
|
(r'\\(["\\/abfnrtv]|[0-9]{1,3}|x[0-9a-fA-F]{2}|u[0-9a-fA-F]{4})', |
|
|
String.Escape), |
|
|
], |
|
|
'char': [ |
|
|
(r"'", String.Char, '#pop'), |
|
|
include('escape'), |
|
|
(r"[^'\\]", String.Char), |
|
|
], |
|
|
'string': [ |
|
|
(r'"', String.Double, '#pop'), |
|
|
include('escape'), |
|
|
(r'[^"\\]+', String.Double), |
|
|
], |
|
|
'array': [ |
|
|
include('expressions'), |
|
|
(r'\}', Punctuation, '#pop'), |
|
|
(r',', Punctuation), |
|
|
], |
|
|
'fargs': [ |
|
|
include('expressions'), |
|
|
(r'\)', Punctuation, '#pop'), |
|
|
(r',', Punctuation), |
|
|
], |
|
|
'index': [ |
|
|
include('expressions'), |
|
|
(r'\]', Punctuation, '#pop'), |
|
|
], |
|
|
} |
|
|
|
