/usr/lib/python2.7/dist-packages/pygments/lexers/rust.py is in python-pygments 2.0.1+dfsg-1.1+deb8u1.
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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 | # -*- coding: utf-8 -*-
"""
pygments.lexers.rust
~~~~~~~~~~~~~~~~~~~~
Lexers for the Rust language.
:copyright: Copyright 2006-2014 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
from pygments.lexer import RegexLexer, include, bygroups, words, default
from pygments.token import Comment, Operator, Keyword, Name, String, \
Number, Punctuation, Whitespace
__all__ = ['RustLexer']
class RustLexer(RegexLexer):
"""
Lexer for the Rust programming language (version 0.9).
.. versionadded:: 1.6
"""
name = 'Rust'
filenames = ['*.rs']
aliases = ['rust']
mimetypes = ['text/x-rustsrc']
tokens = {
'root': [
# Whitespace and Comments
(r'\n', Whitespace),
(r'\s+', Whitespace),
(r'//[/!](.*?)\n', Comment.Doc),
(r'//(.*?)\n', Comment.Single),
(r'/\*', Comment.Multiline, 'comment'),
# Lifetime
(r"""'[a-zA-Z_]\w*""", Name.Label),
# Macro parameters
(r"""\$([a-zA-Z_]\w*|\(,?|\),?|,?)""", Comment.Preproc),
# Keywords
(words((
'as', 'box', 'break', 'continue', 'do', 'else', 'enum', 'extern',
'fn', 'for', 'if', 'impl', 'in', 'loop', 'match', 'mut', 'priv',
'proc', 'pub', 'ref', 'return', 'static', '\'static', 'struct',
'trait', 'true', 'type', 'unsafe', 'while'), suffix=r'\b'),
Keyword),
(words(('alignof', 'be', 'const', 'offsetof', 'pure', 'sizeof',
'typeof', 'once', 'unsized', 'yield'), suffix=r'\b'),
Keyword.Reserved),
(r'(mod|use)\b', Keyword.Namespace),
(r'(true|false)\b', Keyword.Constant),
(r'let\b', Keyword.Declaration),
(words(('u8', 'u16', 'u32', 'u64', 'i8', 'i16', 'i32', 'i64', 'uint',
'int', 'f32', 'f64', 'str', 'bool'), suffix=r'\b'),
Keyword.Type),
(r'self\b', Name.Builtin.Pseudo),
# Prelude
(words((
'Freeze', 'Pod', 'Send', 'Sized', 'Add', 'Sub', 'Mul', 'Div', 'Rem', 'Neg', 'Not', 'BitAnd',
'BitOr', 'BitXor', 'Drop', 'Shl', 'Shr', 'Index', 'Option', 'Some', 'None', 'Result',
'Ok', 'Err', 'from_str', 'range', 'print', 'println', 'Any', 'AnyOwnExt', 'AnyRefExt',
'AnyMutRefExt', 'Ascii', 'AsciiCast', 'OnwedAsciiCast', 'AsciiStr',
'IntoBytes', 'Bool', 'ToCStr', 'Char', 'Clone', 'DeepClone', 'Eq', 'ApproxEq',
'Ord', 'TotalEq', 'Ordering', 'Less', 'Equal', 'Greater', 'Equiv', 'Container',
'Mutable', 'Map', 'MutableMap', 'Set', 'MutableSet', 'Default', 'FromStr',
'Hash', 'FromIterator', 'Extendable', 'Iterator', 'DoubleEndedIterator',
'RandomAccessIterator', 'CloneableIterator', 'OrdIterator',
'MutableDoubleEndedIterator', 'ExactSize', 'Times', 'Algebraic',
'Trigonometric', 'Exponential', 'Hyperbolic', 'Bitwise', 'BitCount',
'Bounded', 'Integer', 'Fractional', 'Real', 'RealExt', 'Num', 'NumCast',
'CheckedAdd', 'CheckedSub', 'CheckedMul', 'Orderable', 'Signed',
'Unsigned', 'Round', 'Primitive', 'Int', 'Float', 'ToStrRadix',
'ToPrimitive', 'FromPrimitive', 'GenericPath', 'Path', 'PosixPath',
'WindowsPath', 'RawPtr', 'Buffer', 'Writer', 'Reader', 'Seek',
'SendStr', 'SendStrOwned', 'SendStrStatic', 'IntoSendStr', 'Str',
'StrVector', 'StrSlice', 'OwnedStr', 'IterBytes', 'ToStr', 'IntoStr',
'CopyableTuple', 'ImmutableTuple', 'ImmutableEqVector', 'ImmutableTotalOrdVector',
'ImmutableCopyableVector', 'OwnedVector', 'OwnedCopyableVector',
'OwnedEqVector', 'MutableVector', 'MutableTotalOrdVector',
'Vector', 'VectorVector', 'CopyableVector', 'ImmutableVector',
'Port', 'Chan', 'SharedChan', 'spawn', 'drop'), suffix=r'\b'),
Name.Builtin),
(r'(ImmutableTuple\d+|Tuple\d+)\b', Name.Builtin),
# Borrowed pointer
(r'(&)(\'[A-Za-z_]\w*)?', bygroups(Operator, Name)),
# Labels
(r'\'[A-Za-z_]\w*:', Name.Label),
# Character Literal
(r"""'(\\['"\\nrt]|\\x[0-9a-fA-F]{2}|\\[0-7]{1,3}"""
r"""|\\u[0-9a-fA-F]{4}|\\U[0-9a-fA-F]{8}|.)'""",
String.Char),
# Binary Literal
(r'0b[01_]+', Number.Bin, 'number_lit'),
# Octal Literal
(r'0o[0-7_]+', Number.Oct, 'number_lit'),
# Hexadecimal Literal
(r'0[xX][0-9a-fA-F_]+', Number.Hex, 'number_lit'),
# Decimal Literal
(r'[0-9][0-9_]*(\.[0-9_]+[eE][+\-]?[0-9_]+|'
r'\.[0-9_]*|[eE][+\-]?[0-9_]+)', Number.Float, 'number_lit'),
(r'[0-9][0-9_]*', Number.Integer, 'number_lit'),
# String Literal
(r'"', String, 'string'),
(r'r(#*)".*?"\1', String.Raw),
# Operators and Punctuation
(r'[{}()\[\],.;]', Punctuation),
(r'[+\-*/%&|<>^!~@=:?]', Operator),
# Identifier
(r'[a-zA-Z_]\w*', Name),
# Attributes
(r'#!?\[', Comment.Preproc, 'attribute['),
# Macros
(r'([A-Za-z_]\w*)(!)(\s*)([A-Za-z_]\w*)?(\s*)(\{)',
bygroups(Comment.Preproc, Punctuation, Whitespace, Name,
Whitespace, Punctuation), 'macro{'),
(r'([A-Za-z_]\w*)(!)(\s*)([A-Za-z_]\w*)?(\()',
bygroups(Comment.Preproc, Punctuation, Whitespace, Name,
Punctuation), 'macro('),
],
'comment': [
(r'[^*/]+', Comment.Multiline),
(r'/\*', Comment.Multiline, '#push'),
(r'\*/', Comment.Multiline, '#pop'),
(r'[*/]', Comment.Multiline),
],
'number_lit': [
(r'[ui](8|16|32|64)', Keyword, '#pop'),
(r'f(32|64)', Keyword, '#pop'),
default('#pop'),
],
'string': [
(r'"', String, '#pop'),
(r"""\\['"\\nrt]|\\x[0-9a-fA-F]{2}|\\[0-7]{1,3}"""
r"""|\\u[0-9a-fA-F]{4}|\\U[0-9a-fA-F]{8}""", String.Escape),
(r'[^\\"]+', String),
(r'\\', String),
],
'macro{': [
(r'\{', Operator, '#push'),
(r'\}', Operator, '#pop'),
],
'macro(': [
(r'\(', Operator, '#push'),
(r'\)', Operator, '#pop'),
],
'attribute_common': [
(r'"', String, 'string'),
(r'\[', Comment.Preproc, 'attribute['),
(r'\(', Comment.Preproc, 'attribute('),
],
'attribute[': [
include('attribute_common'),
(r'\];?', Comment.Preproc, '#pop'),
(r'[^"\]]+', Comment.Preproc),
],
'attribute(': [
include('attribute_common'),
(r'\);?', Comment.Preproc, '#pop'),
(r'[^")]+', Comment.Preproc),
],
}
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