117 lines
3.9 KiB
Python
117 lines
3.9 KiB
Python
|
"""
|
||
|
|
pygments.lexers.whiley
|
||
|
|
~~~~~~~~~~~~~~~~~~~~~~
|
||
|
|
|
||
|
|
Lexers for the Whiley language.
|
||
|
|
|
||
|
|
:copyright: Copyright 2006-2022 by the Pygments team, see AUTHORS.
|
||
|
|
:license: BSD, see LICENSE for details.
|
||
|
|
"""
|
||
|
|
|
||
|
|
from pygments.lexer import RegexLexer, bygroups, words
|
||
|
|
from pygments.token import Comment, Keyword, Name, Number, Operator, \
|
||
|
|
Punctuation, String, Text
|
||
|
|
|
||
|
|
__all__ = ['WhileyLexer']
|
||
|
|
|
||
|
|
|
||
|
|
class WhileyLexer(RegexLexer):
|
||
|
|
"""
|
||
|
|
Lexer for the Whiley programming language.
|
||
|
|
|
||
|
|
.. versionadded:: 2.2
|
||
|
|
"""
|
||
|
|
name = 'Whiley'
|
||
|
|
url = 'http://whiley.org/'
|
||
|
|
filenames = ['*.whiley']
|
||
|
|
aliases = ['whiley']
|
||
|
|
mimetypes = ['text/x-whiley']
|
||
|
|
|
||
|
|
# See the language specification:
|
||
|
|
# http://whiley.org/download/WhileyLanguageSpec.pdf
|
||
|
|
|
||
|
|
tokens = {
|
||
|
|
'root': [
|
||
|
|
# Whitespace
|
||
|
|
(r'\s+', Text),
|
||
|
|
|
||
|
|
# Comments
|
||
|
|
(r'//.*', Comment.Single),
|
||
|
|
# don't parse empty comment as doc comment
|
||
|
|
(r'/\*\*/', Comment.Multiline),
|
||
|
|
(r'(?s)/\*\*.*?\*/', String.Doc),
|
||
|
|
(r'(?s)/\*.*?\*/', Comment.Multiline),
|
||
|
|
|
||
|
|
# Keywords
|
||
|
|
(words((
|
||
|
|
'if', 'else', 'while', 'for', 'do', 'return',
|
||
|
|
'switch', 'case', 'default', 'break', 'continue',
|
||
|
|
'requires', 'ensures', 'where', 'assert', 'assume',
|
||
|
|
'all', 'no', 'some', 'in', 'is', 'new',
|
||
|
|
'throw', 'try', 'catch', 'debug', 'skip', 'fail',
|
||
|
|
'finite', 'total'), suffix=r'\b'), Keyword.Reserved),
|
||
|
|
(words((
|
||
|
|
'function', 'method', 'public', 'private', 'protected',
|
||
|
|
'export', 'native'), suffix=r'\b'), Keyword.Declaration),
|
||
|
|
# "constant" & "type" are not keywords unless used in declarations
|
||
|
|
(r'(constant|type)(\s+)([a-zA-Z_]\w*)(\s+)(is)\b',
|
||
|
|
bygroups(Keyword.Declaration, Text, Name, Text, Keyword.Reserved)),
|
||
|
|
(r'(true|false|null)\b', Keyword.Constant),
|
||
|
|
(r'(bool|byte|int|real|any|void)\b', Keyword.Type),
|
||
|
|
# "from" is not a keyword unless used with import
|
||
|
|
(r'(import)(\s+)(\*)([^\S\n]+)(from)\b',
|
||
|
|
bygroups(Keyword.Namespace, Text, Punctuation, Text, Keyword.Namespace)),
|
||
|
|
(r'(import)(\s+)([a-zA-Z_]\w*)([^\S\n]+)(from)\b',
|
||
|
|
bygroups(Keyword.Namespace, Text, Name, Text, Keyword.Namespace)),
|
||
|
|
(r'(package|import)\b', Keyword.Namespace),
|
||
|
|
|
||
|
|
# standard library: https://github.com/Whiley/WhileyLibs/
|
||
|
|
(words((
|
||
|
|
# types defined in whiley.lang.Int
|
||
|
|
'i8', 'i16', 'i32', 'i64',
|
||
|
|
'u8', 'u16', 'u32', 'u64',
|
||
|
|
'uint', 'nat',
|
||
|
|
|
||
|
|
# whiley.lang.Any
|
||
|
|
'toString'), suffix=r'\b'), Name.Builtin),
|
||
|
|
|
||
|
|
# byte literal
|
||
|
|
(r'[01]+b', Number.Bin),
|
||
|
|
|
||
|
|
# decimal literal
|
||
|
|
(r'[0-9]+\.[0-9]+', Number.Float),
|
||
|
|
# match "1." but not ranges like "3..5"
|
||
|
|
(r'[0-9]+\.(?!\.)', Number.Float),
|
||
|
|
|
||
|
|
# integer literal
|
||
|
|
(r'0x[0-9a-fA-F]+', Number.Hex),
|
||
|
|
(r'[0-9]+', Number.Integer),
|
||
|
|
|
||
|
|
# character literal
|
||
|
|
(r"""'[^\\]'""", String.Char),
|
||
|
|
(r"""(')(\\['"\\btnfr])(')""",
|
||
|
|
bygroups(String.Char, String.Escape, String.Char)),
|
||
|
|
|
||
|
|
# string literal
|
||
|
|
(r'"', String, 'string'),
|
||
|
|
|
||
|
|
# operators and punctuation
|
||
|
|
(r'[{}()\[\],.;]', Punctuation),
|
||
|
|
(r'[+\-*/%&|<>^!~@=:?'
|
||
|
|
# unicode operators
|
||
|
|
r'\u2200\u2203\u2205\u2282\u2286\u2283\u2287'
|
||
|
|
r'\u222A\u2229\u2264\u2265\u2208\u2227\u2228'
|
||
|
|
r']', Operator),
|
||
|
|
|
||
|
|
# identifier
|
||
|
|
(r'[a-zA-Z_]\w*', Name),
|
||
|
|
],
|
||
|
|
'string': [
|
||
|
|
(r'"', String, '#pop'),
|
||
|
|
(r'\\[btnfr]', String.Escape),
|
||
|
|
(r'\\u[0-9a-fA-F]{4}', String.Escape),
|
||
|
|
(r'\\.', String),
|
||
|
|
(r'[^\\"]+', String),
|
||
|
|
],
|
||
|
|
}
|