216 lines
7.8 KiB
Python
216 lines
7.8 KiB
Python
# -*- coding: utf-8 -*-
|
|
"""
|
|
pygments.lexers.rust
|
|
~~~~~~~~~~~~~~~~~~~~
|
|
|
|
Lexers for the Rust language.
|
|
|
|
:copyright: Copyright 2006-2020 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 Text, Comment, Operator, Keyword, Name, String, \
|
|
Number, Punctuation, Whitespace
|
|
|
|
__all__ = ['RustLexer']
|
|
|
|
|
|
class RustLexer(RegexLexer):
|
|
"""
|
|
Lexer for the Rust programming language (version 1.40).
|
|
|
|
.. versionadded:: 1.6
|
|
"""
|
|
name = 'Rust'
|
|
filenames = ['*.rs', '*.rs.in']
|
|
aliases = ['rust', 'rs']
|
|
mimetypes = ['text/rust', 'text/x-rust']
|
|
|
|
keyword_types = (words((
|
|
'u8', 'u16', 'u32', 'u64', 'u128', 'i8', 'i16', 'i32', 'i64', 'i128',
|
|
'usize', 'isize', 'f32', 'f64', 'char', 'str', 'bool',
|
|
), suffix=r'\b'), Keyword.Type)
|
|
|
|
builtin_types = (words((
|
|
'Send', 'Sized', 'Sync', 'Unpin',
|
|
'Drop', 'Fn', 'FnMut', 'FnOnce',
|
|
'AsRef', 'AsMut', 'Into', 'From',
|
|
'Iterator', 'Extend', 'IntoIterator', 'DoubleEndedIterator',
|
|
'ExactSizeIterator', 'Option', 'Result',
|
|
'Box', 'ToOwned', 'String', 'ToString', 'Vec',
|
|
'Clone', 'Copy', 'Default', 'Eq', 'Hash', 'Ord', 'PartialEq',
|
|
'PartialOrd', 'Ord',
|
|
), suffix=r'\b'), Name.Builtin)
|
|
|
|
builtin_funcs_macros = (words((
|
|
'drop', 'Some', 'None', 'Ok', 'Err',
|
|
'asm!', 'assert!', 'assert_eq!', 'assert_ne!', 'cfg!', 'column!',
|
|
'compile_error!', 'concat!', 'concat_idents!', 'dbg!', 'debug_assert!',
|
|
'debug_assert_eq!', 'debug_assert_ne!', 'env!', 'eprint!', 'eprintln!',
|
|
'file!', 'format_args!', 'format_args_nl!', 'global_asm!', 'include!',
|
|
'include_bytes!', 'include_str!', 'line!', 'log_syntax!',
|
|
'module_path!', 'option_env!', 'panic!', 'print!', 'println!',
|
|
'stringify!', 'thread_local!', 'todo!', 'trace_macros!',
|
|
'unimplemented!', 'unreachable!', 'vec!', 'write!', 'writeln!',
|
|
), suffix=r'\b'), Name.Builtin)
|
|
|
|
tokens = {
|
|
'root': [
|
|
# rust allows a file to start with a shebang, but if the first line
|
|
# starts with #![ then it's not a shebang but a crate attribute.
|
|
(r'#![^[\r\n].*$', Comment.Preproc),
|
|
default('base'),
|
|
],
|
|
'base': [
|
|
# Whitespace and Comments
|
|
(r'\n', Whitespace),
|
|
(r'\s+', Whitespace),
|
|
(r'//!.*?\n', String.Doc),
|
|
(r'///(\n|[^/].*?\n)', String.Doc),
|
|
(r'//(.*?)\n', Comment.Single),
|
|
(r'/\*\*(\n|[^/*])', String.Doc, 'doccomment'),
|
|
(r'/\*!', String.Doc, 'doccomment'),
|
|
(r'/\*', Comment.Multiline, 'comment'),
|
|
|
|
# Macro parameters
|
|
(r"""\$([a-zA-Z_]\w*|\(,?|\),?|,?)""", Comment.Preproc),
|
|
# Keywords
|
|
(words((
|
|
'as', 'async', 'await', 'box', 'const', 'crate', 'dyn', 'else',
|
|
'extern', 'for', 'if', 'impl', 'in', 'loop', 'match', 'move',
|
|
'mut', 'pub', 'ref', 'return', 'static', 'super', 'trait',
|
|
'try', 'unsafe', 'use', 'where', 'while', 'macro_rules!',
|
|
), suffix=r'\b'), Keyword),
|
|
(words(('abstract', 'alignof', 'become', 'do', 'final', 'macro',
|
|
'offsetof', 'override', 'priv', 'proc', 'pure', 'sizeof',
|
|
'typeof', 'unsized', 'virtual', 'yield'), suffix=r'\b'),
|
|
Keyword.Reserved),
|
|
(r'(true|false)\b', Keyword.Constant),
|
|
(r'mod\b', Keyword, 'modname'),
|
|
(r'let\b', Keyword.Declaration),
|
|
(r'fn\b', Keyword, 'funcname'),
|
|
(r'(struct|enum|type|union)\b', Keyword, 'typename'),
|
|
(r'(default)(\s+)(type|fn)\b', bygroups(Keyword, Text, Keyword)),
|
|
keyword_types,
|
|
(r'[sS]elf\b', Name.Builtin.Pseudo),
|
|
# Prelude (taken from Rust's src/libstd/prelude.rs)
|
|
builtin_types,
|
|
builtin_funcs_macros,
|
|
# Path seperators, so types don't catch them.
|
|
(r'::\b', Text),
|
|
# Types in positions.
|
|
(r'(?::|->)', Text, 'typename'),
|
|
# Labels
|
|
(r'(break|continue)(\s*)(\'[A-Za-z_]\w*)?',
|
|
bygroups(Keyword, Text.Whitespace, Name.Label)),
|
|
|
|
# Character literals
|
|
(r"""'(\\['"\\nrt]|\\x[0-7][0-9a-fA-F]|\\0"""
|
|
r"""|\\u\{[0-9a-fA-F]{1,6}\}|.)'""",
|
|
String.Char),
|
|
(r"""b'(\\['"\\nrt]|\\x[0-9a-fA-F]{2}|\\0"""
|
|
r"""|\\u\{[0-9a-fA-F]{1,6}\}|.)'""",
|
|
String.Char),
|
|
|
|
# Binary literals
|
|
(r'0b[01_]+', Number.Bin, 'number_lit'),
|
|
# Octal literals
|
|
(r'0o[0-7_]+', Number.Oct, 'number_lit'),
|
|
# Hexadecimal literals
|
|
(r'0[xX][0-9a-fA-F_]+', Number.Hex, 'number_lit'),
|
|
# Decimal literals
|
|
(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 literals
|
|
(r'b"', String, 'bytestring'),
|
|
(r'"', String, 'string'),
|
|
(r'b?r(#*)".*?"\1', String),
|
|
|
|
# Lifetime names
|
|
(r"'", Operator, 'lifetime'),
|
|
|
|
# Operators and Punctuation
|
|
(r'\.\.=?', Operator),
|
|
(r'[{}()\[\],.;]', Punctuation),
|
|
(r'[+\-*/%&|<>^!~@=:?]', Operator),
|
|
|
|
# Identifiers
|
|
(r'[a-zA-Z_]\w*', Name),
|
|
# Raw identifiers
|
|
(r'r#[a-zA-Z_]\w*', Name),
|
|
|
|
# Attributes
|
|
(r'#!?\[', Comment.Preproc, 'attribute['),
|
|
],
|
|
'comment': [
|
|
(r'[^*/]+', Comment.Multiline),
|
|
(r'/\*', Comment.Multiline, '#push'),
|
|
(r'\*/', Comment.Multiline, '#pop'),
|
|
(r'[*/]', Comment.Multiline),
|
|
],
|
|
'doccomment': [
|
|
(r'[^*/]+', String.Doc),
|
|
(r'/\*', String.Doc, '#push'),
|
|
(r'\*/', String.Doc, '#pop'),
|
|
(r'[*/]', String.Doc),
|
|
],
|
|
'modname': [
|
|
(r'\s+', Text),
|
|
(r'[a-zA-Z_]\w*', Name.Namespace, '#pop'),
|
|
default('#pop'),
|
|
],
|
|
'funcname': [
|
|
(r'\s+', Text),
|
|
(r'[a-zA-Z_]\w*', Name.Function, '#pop'),
|
|
default('#pop'),
|
|
],
|
|
'typename': [
|
|
(r'\s+', Text),
|
|
(r'&', Keyword.Pseudo),
|
|
(r"'", Operator, 'lifetime'),
|
|
builtin_types,
|
|
keyword_types,
|
|
(r'[a-zA-Z_]\w*', Name.Class, '#pop'),
|
|
default('#pop'),
|
|
],
|
|
'lifetime': [
|
|
(r"(static|_)", Name.Builtin),
|
|
(r"[a-zA-Z_]+\w*", Name.Attribute),
|
|
default('#pop'),
|
|
],
|
|
'number_lit': [
|
|
(r'[ui](8|16|32|64|size)', Keyword, '#pop'),
|
|
(r'f(32|64)', Keyword, '#pop'),
|
|
default('#pop'),
|
|
],
|
|
'string': [
|
|
(r'"', String, '#pop'),
|
|
(r"""\\['"\\nrt]|\\x[0-7][0-9a-fA-F]|\\0"""
|
|
r"""|\\u\{[0-9a-fA-F]{1,6}\}""", String.Escape),
|
|
(r'[^\\"]+', String),
|
|
(r'\\', String),
|
|
],
|
|
'bytestring': [
|
|
(r"""\\x[89a-fA-F][0-9a-fA-F]""", String.Escape),
|
|
include('string'),
|
|
],
|
|
'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),
|
|
],
|
|
}
|