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""" pygments.lexers.futhark ~~~~~~~~~~~~~~~~~~~~~~~ Lexer for the Futhark language :copyright: Copyright 2006-2022 by the Pygments team, see AUTHORS. :license: BSD, see LICENSE for details. """ from pygments.lexer import RegexLexer, bygroups from pygments.token import Comment, Operator, Keyword, Name, String, \ Number, Punctuation, Whitespace from pygments import unistring as uni __all__ = ['FutharkLexer'] class FutharkLexer(RegexLexer): """ A Futhark lexer .. versionadded:: 2.8 """ name = 'Futhark' url = 'https://futhark-lang.org/' aliases = ['futhark'] filenames = ['*.fut'] mimetypes = ['text/x-futhark'] num_types = ('i8', 'i16', 'i32', 'i64', 'u8', 'u16', 'u32', 'u64', 'f32', 'f64') other_types = ('bool', ) reserved = ('if', 'then', 'else', 'def', 'let', 'loop', 'in', 'with', 'type', 'type~', 'type^', 'val', 'entry', 'for', 'while', 'do', 'case', 'match', 'include', 'import', 'module', 'open', 'local', 'assert', '_') ascii = ('NUL', 'SOH', '[SE]TX', 'EOT', 'ENQ', 'ACK', 'BEL', 'BS', 'HT', 'LF', 'VT', 'FF', 'CR', 'S[OI]', 'DLE', 'DC[1-4]', 'NAK', 'SYN', 'ETB', 'CAN', 'EM', 'SUB', 'ESC', '[FGRU]S', 'SP', 'DEL') num_postfix = r'(%s)?' % '|'.join(num_types) identifier_re = '[a-zA-Z_][a-zA-Z_0-9\']*' # opstart_re = '+\-\*/%=\!><\|&\^' tokens = { 'root': [ (r'--(.*?)$', Comment.Single), (r'\s+', Whitespace), (r'\(\)', Punctuation), (r'\b(%s)(?!\')\b' % '|'.join(reserved), Keyword.Reserved), (r'\b(%s)(?!\')\b' % '|'.join(num_types + other_types), Keyword.Type), # Identifiers (r'#\[([a-zA-Z_\(\) ]*)\]', Comment.Preproc), (r'[#!]?(%s\.)*%s' % (identifier_re, identifier_re), Name), (r'\\', Operator), (r'[-+/%=!><|&*^][-+/%=!><|&*^.]*', Operator), (r'[][(),:;`{}?.\'~^]', Punctuation), # Numbers (r'0[xX]_*[\da-fA-F](_*[\da-fA-F])*_*[pP][+-]?\d(_*\d)*' + num_postfix, Number.Float), (r'0[xX]_*[\da-fA-F](_*[\da-fA-F])*\.[\da-fA-F](_*[\da-fA-F])*' r'(_*[pP][+-]?\d(_*\d)*)?' + num_postfix, Number.Float), (r'\d(_*\d)*_*[eE][+-]?\d(_*\d)*' + num_postfix, Number.Float), (r'\d(_*\d)*\.\d(_*\d)*(_*[eE][+-]?\d(_*\d)*)?' + num_postfix, Number.Float), (r'0[bB]_*[01](_*[01])*' + num_postfix, Number.Bin), (r'0[xX]_*[\da-fA-F](_*[\da-fA-F])*' + num_postfix, Number.Hex), (r'\d(_*\d)*' + num_postfix, Number.Integer), # Character/String Literals (r"'", String.Char, 'character'), (r'"', String, 'string'), # Special (r'\[[a-zA-Z_\d]*\]', Keyword.Type), (r'\(\)', Name.Builtin), ], 'character': [ # Allows multi-chars, incorrectly. (r"[^\\']'", String.Char, '#pop'), (r"\\", String.Escape, 'escape'), ("'", String.Char, '#pop'), ], 'string': [ (r'[^\\"]+', String), (r"\\", String.Escape, 'escape'), ('"', String, '#pop'), ], 'escape': [ (r'[abfnrtv"\'&\\]', String.Escape, '#pop'), (r'\^[][' + uni.Lu + r'@^_]', String.Escape, '#pop'), ('|'.join(ascii), String.Escape, '#pop'), (r'o[0-7]+', String.Escape, '#pop'), (r'x[\da-fA-F]+', String.Escape, '#pop'), (r'\d+', String.Escape, '#pop'), (r'(\s+)(\\)', bygroups(Whitespace, String.Escape), '#pop'), ], }