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"""
pygments.lexers.zig
~~~~~~~~~~~~~~~~~~~
Lexers for Zig.
:copyright: Copyright 2006-2023 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
from pygments.lexer import RegexLexer, words
from pygments.token import Comment, Operator, Keyword, Name, String, \
Number, Punctuation, Whitespace
__all__ = ['ZigLexer']
class ZigLexer(RegexLexer):
"""
Lexer for the Zig language.
grammar: https://ziglang.org/documentation/master/#Grammar
"""
name = 'Zig'
url = 'http://www.ziglang.org'
aliases = ['zig']
filenames = ['*.zig']
mimetypes = ['text/zig']
type_keywords = (
words(('bool', 'f16', 'f32', 'f64', 'f128', 'void', 'noreturn', 'type',
'anyerror', 'promise', 'i0', 'u0', 'isize', 'usize', 'comptime_int',
'comptime_float', 'c_short', 'c_ushort', 'c_int', 'c_uint', 'c_long',
'c_ulong', 'c_longlong', 'c_ulonglong', 'c_longdouble', 'c_void'
'i8', 'u8', 'i16', 'u16', 'i32', 'u32', 'i64', 'u64', 'i128',
'u128'), suffix=r'\b'),
Keyword.Type)
storage_keywords = (
words(('const', 'var', 'extern', 'packed', 'export', 'pub', 'noalias',
'inline', 'comptime', 'nakedcc', 'stdcallcc', 'volatile', 'allowzero',
'align', 'linksection', 'threadlocal'), suffix=r'\b'),
Keyword.Reserved)
structure_keywords = (
words(('struct', 'enum', 'union', 'error'), suffix=r'\b'),
Keyword)
statement_keywords = (
words(('break', 'return', 'continue', 'asm', 'defer', 'errdefer',
'unreachable', 'try', 'catch', 'async', 'await', 'suspend',
'resume', 'cancel'), suffix=r'\b'),
Keyword)
conditional_keywords = (
words(('if', 'else', 'switch', 'and', 'or', 'orelse'), suffix=r'\b'),
Keyword)
repeat_keywords = (
words(('while', 'for'), suffix=r'\b'),
Keyword)
other_keywords = (
words(('fn', 'usingnamespace', 'test'), suffix=r'\b'),
Keyword)
constant_keywords = (
words(('true', 'false', 'null', 'undefined'), suffix=r'\b'),
Keyword.Constant)
tokens = {
'root': [
(r'\n', Whitespace),
(r'\s+', Whitespace),
(r'//.*?\n', Comment.Single),
# Keywords
statement_keywords,
storage_keywords,
structure_keywords,
repeat_keywords,
type_keywords,
constant_keywords,
conditional_keywords,
other_keywords,
# Floats
(r'0x[0-9a-fA-F]+\.[0-9a-fA-F]+([pP][\-+]?[0-9a-fA-F]+)?', Number.Float),
(r'0x[0-9a-fA-F]+\.?[pP][\-+]?[0-9a-fA-F]+', Number.Float),
(r'[0-9]+\.[0-9]+([eE][-+]?[0-9]+)?', Number.Float),
(r'[0-9]+\.?[eE][-+]?[0-9]+', Number.Float),
# Integers
(r'0b[01]+', Number.Bin),
(r'0o[0-7]+', Number.Oct),
(r'0x[0-9a-fA-F]+', Number.Hex),
(r'[0-9]+', Number.Integer),
# Identifier
(r'@[a-zA-Z_]\w*', Name.Builtin),
(r'[a-zA-Z_]\w*', Name),
# Characters
(r'\'\\\'\'', String.Escape),
(r'\'\\(x[a-fA-F0-9]{2}|u[a-fA-F0-9]{4}|U[a-fA-F0-9]{6}|[nr\\t\'"])\'',
String.Escape),
(r'\'[^\\\']\'', String),
# Strings
(r'\\\\[^\n]*', String.Heredoc),
(r'c\\\\[^\n]*', String.Heredoc),
(r'c?"', String, 'string'),
# Operators, Punctuation
(r'[+%=><|^!?/\-*&~:]', Operator),
(r'[{}()\[\],.;]', Punctuation)
],
'string': [
(r'\\(x[a-fA-F0-9]{2}|u[a-fA-F0-9]{4}|U[a-fA-F0-9]{6}|[nr\\t\'"])',
String.Escape),
(r'[^\\"\n]+', String),
(r'"', String, '#pop')
]
}
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