860 lines
31 KiB
Python
860 lines
31 KiB
Python
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# -*- coding: utf-8 -*-
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"""
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pygments.lexers.ml
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~~~~~~~~~~~~~~~~~~
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Lexers for ML family languages.
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:copyright: Copyright 2006-2019 by the Pygments team, see AUTHORS.
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:license: BSD, see LICENSE for details.
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"""
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import re
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from pygments.lexer import RegexLexer, include, bygroups, default, words
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from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
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Number, Punctuation, Error
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__all__ = ['SMLLexer', 'OcamlLexer', 'OpaLexer', 'ReasonLexer']
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class SMLLexer(RegexLexer):
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"""
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For the Standard ML language.
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.. versionadded:: 1.5
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"""
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name = 'Standard ML'
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aliases = ['sml']
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filenames = ['*.sml', '*.sig', '*.fun']
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mimetypes = ['text/x-standardml', 'application/x-standardml']
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alphanumid_reserved = {
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# Core
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'abstype', 'and', 'andalso', 'as', 'case', 'datatype', 'do', 'else',
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'end', 'exception', 'fn', 'fun', 'handle', 'if', 'in', 'infix',
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'infixr', 'let', 'local', 'nonfix', 'of', 'op', 'open', 'orelse',
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'raise', 'rec', 'then', 'type', 'val', 'with', 'withtype', 'while',
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# Modules
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'eqtype', 'functor', 'include', 'sharing', 'sig', 'signature',
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'struct', 'structure', 'where',
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}
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symbolicid_reserved = {
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# Core
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':', r'\|', '=', '=>', '->', '#',
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# Modules
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':>',
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}
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nonid_reserved = {'(', ')', '[', ']', '{', '}', ',', ';', '...', '_'}
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alphanumid_re = r"[a-zA-Z][\w']*"
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symbolicid_re = r"[!%&$#+\-/:<=>?@\\~`^|*]+"
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# A character constant is a sequence of the form #s, where s is a string
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# constant denoting a string of size one character. This setup just parses
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# the entire string as either a String.Double or a String.Char (depending
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# on the argument), even if the String.Char is an erronous
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# multiple-character string.
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def stringy(whatkind):
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return [
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(r'[^"\\]', whatkind),
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(r'\\[\\"abtnvfr]', String.Escape),
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# Control-character notation is used for codes < 32,
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# where \^@ == \000
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(r'\\\^[\x40-\x5e]', String.Escape),
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# Docs say 'decimal digits'
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(r'\\[0-9]{3}', String.Escape),
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(r'\\u[0-9a-fA-F]{4}', String.Escape),
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(r'\\\s+\\', String.Interpol),
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(r'"', whatkind, '#pop'),
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]
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# Callbacks for distinguishing tokens and reserved words
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def long_id_callback(self, match):
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if match.group(1) in self.alphanumid_reserved:
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token = Error
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else:
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token = Name.Namespace
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yield match.start(1), token, match.group(1)
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yield match.start(2), Punctuation, match.group(2)
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def end_id_callback(self, match):
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if match.group(1) in self.alphanumid_reserved:
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token = Error
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elif match.group(1) in self.symbolicid_reserved:
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token = Error
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else:
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token = Name
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yield match.start(1), token, match.group(1)
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def id_callback(self, match):
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str = match.group(1)
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if str in self.alphanumid_reserved:
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token = Keyword.Reserved
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elif str in self.symbolicid_reserved:
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token = Punctuation
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else:
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token = Name
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yield match.start(1), token, str
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tokens = {
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# Whitespace and comments are (almost) everywhere
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'whitespace': [
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(r'\s+', Text),
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(r'\(\*', Comment.Multiline, 'comment'),
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],
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'delimiters': [
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# This lexer treats these delimiters specially:
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# Delimiters define scopes, and the scope is how the meaning of
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# the `|' is resolved - is it a case/handle expression, or function
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# definition by cases? (This is not how the Definition works, but
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# it's how MLton behaves, see http://mlton.org/SMLNJDeviations)
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(r'\(|\[|\{', Punctuation, 'main'),
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(r'\)|\]|\}', Punctuation, '#pop'),
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(r'\b(let|if|local)\b(?!\')', Keyword.Reserved, ('main', 'main')),
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(r'\b(struct|sig|while)\b(?!\')', Keyword.Reserved, 'main'),
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(r'\b(do|else|end|in|then)\b(?!\')', Keyword.Reserved, '#pop'),
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],
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'core': [
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# Punctuation that doesn't overlap symbolic identifiers
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(r'(%s)' % '|'.join(re.escape(z) for z in nonid_reserved),
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Punctuation),
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# Special constants: strings, floats, numbers in decimal and hex
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(r'#"', String.Char, 'char'),
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(r'"', String.Double, 'string'),
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(r'~?0x[0-9a-fA-F]+', Number.Hex),
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(r'0wx[0-9a-fA-F]+', Number.Hex),
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(r'0w\d+', Number.Integer),
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(r'~?\d+\.\d+[eE]~?\d+', Number.Float),
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(r'~?\d+\.\d+', Number.Float),
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(r'~?\d+[eE]~?\d+', Number.Float),
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(r'~?\d+', Number.Integer),
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# Labels
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(r'#\s*[1-9][0-9]*', Name.Label),
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(r'#\s*(%s)' % alphanumid_re, Name.Label),
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(r'#\s+(%s)' % symbolicid_re, Name.Label),
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# Some reserved words trigger a special, local lexer state change
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(r'\b(datatype|abstype)\b(?!\')', Keyword.Reserved, 'dname'),
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(r'(?=\b(exception)\b(?!\'))', Text, ('ename')),
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(r'\b(functor|include|open|signature|structure)\b(?!\')',
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Keyword.Reserved, 'sname'),
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(r'\b(type|eqtype)\b(?!\')', Keyword.Reserved, 'tname'),
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# Regular identifiers, long and otherwise
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(r'\'[\w\']*', Name.Decorator),
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(r'(%s)(\.)' % alphanumid_re, long_id_callback, "dotted"),
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(r'(%s)' % alphanumid_re, id_callback),
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(r'(%s)' % symbolicid_re, id_callback),
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],
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'dotted': [
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(r'(%s)(\.)' % alphanumid_re, long_id_callback),
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(r'(%s)' % alphanumid_re, end_id_callback, "#pop"),
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(r'(%s)' % symbolicid_re, end_id_callback, "#pop"),
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(r'\s+', Error),
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(r'\S+', Error),
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],
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# Main parser (prevents errors in files that have scoping errors)
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'root': [
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default('main')
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],
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# In this scope, I expect '|' to not be followed by a function name,
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# and I expect 'and' to be followed by a binding site
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'main': [
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include('whitespace'),
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# Special behavior of val/and/fun
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(r'\b(val|and)\b(?!\')', Keyword.Reserved, 'vname'),
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(r'\b(fun)\b(?!\')', Keyword.Reserved,
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('#pop', 'main-fun', 'fname')),
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include('delimiters'),
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include('core'),
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(r'\S+', Error),
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],
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# In this scope, I expect '|' and 'and' to be followed by a function
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'main-fun': [
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include('whitespace'),
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(r'\s', Text),
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(r'\(\*', Comment.Multiline, 'comment'),
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# Special behavior of val/and/fun
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(r'\b(fun|and)\b(?!\')', Keyword.Reserved, 'fname'),
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(r'\b(val)\b(?!\')', Keyword.Reserved,
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('#pop', 'main', 'vname')),
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# Special behavior of '|' and '|'-manipulating keywords
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(r'\|', Punctuation, 'fname'),
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(r'\b(case|handle)\b(?!\')', Keyword.Reserved,
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('#pop', 'main')),
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include('delimiters'),
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include('core'),
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(r'\S+', Error),
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],
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# Character and string parsers
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'char': stringy(String.Char),
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'string': stringy(String.Double),
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'breakout': [
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(r'(?=\b(%s)\b(?!\'))' % '|'.join(alphanumid_reserved), Text, '#pop'),
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],
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# Dealing with what comes after module system keywords
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'sname': [
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include('whitespace'),
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include('breakout'),
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(r'(%s)' % alphanumid_re, Name.Namespace),
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default('#pop'),
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],
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# Dealing with what comes after the 'fun' (or 'and' or '|') keyword
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'fname': [
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include('whitespace'),
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(r'\'[\w\']*', Name.Decorator),
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(r'\(', Punctuation, 'tyvarseq'),
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(r'(%s)' % alphanumid_re, Name.Function, '#pop'),
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(r'(%s)' % symbolicid_re, Name.Function, '#pop'),
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# Ignore interesting function declarations like "fun (x + y) = ..."
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default('#pop'),
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],
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# Dealing with what comes after the 'val' (or 'and') keyword
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'vname': [
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include('whitespace'),
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(r'\'[\w\']*', Name.Decorator),
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(r'\(', Punctuation, 'tyvarseq'),
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(r'(%s)(\s*)(=(?!%s))' % (alphanumid_re, symbolicid_re),
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bygroups(Name.Variable, Text, Punctuation), '#pop'),
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(r'(%s)(\s*)(=(?!%s))' % (symbolicid_re, symbolicid_re),
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bygroups(Name.Variable, Text, Punctuation), '#pop'),
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(r'(%s)' % alphanumid_re, Name.Variable, '#pop'),
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(r'(%s)' % symbolicid_re, Name.Variable, '#pop'),
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# Ignore interesting patterns like 'val (x, y)'
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default('#pop'),
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],
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# Dealing with what comes after the 'type' (or 'and') keyword
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'tname': [
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include('whitespace'),
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include('breakout'),
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(r'\'[\w\']*', Name.Decorator),
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(r'\(', Punctuation, 'tyvarseq'),
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(r'=(?!%s)' % symbolicid_re, Punctuation, ('#pop', 'typbind')),
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(r'(%s)' % alphanumid_re, Keyword.Type),
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(r'(%s)' % symbolicid_re, Keyword.Type),
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(r'\S+', Error, '#pop'),
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],
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# A type binding includes most identifiers
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'typbind': [
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include('whitespace'),
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(r'\b(and)\b(?!\')', Keyword.Reserved, ('#pop', 'tname')),
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include('breakout'),
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include('core'),
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(r'\S+', Error, '#pop'),
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],
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# Dealing with what comes after the 'datatype' (or 'and') keyword
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'dname': [
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include('whitespace'),
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include('breakout'),
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(r'\'[\w\']*', Name.Decorator),
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(r'\(', Punctuation, 'tyvarseq'),
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(r'(=)(\s*)(datatype)',
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bygroups(Punctuation, Text, Keyword.Reserved), '#pop'),
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(r'=(?!%s)' % symbolicid_re, Punctuation,
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('#pop', 'datbind', 'datcon')),
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(r'(%s)' % alphanumid_re, Keyword.Type),
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(r'(%s)' % symbolicid_re, Keyword.Type),
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(r'\S+', Error, '#pop'),
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],
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# common case - A | B | C of int
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'datbind': [
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include('whitespace'),
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(r'\b(and)\b(?!\')', Keyword.Reserved, ('#pop', 'dname')),
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(r'\b(withtype)\b(?!\')', Keyword.Reserved, ('#pop', 'tname')),
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(r'\b(of)\b(?!\')', Keyword.Reserved),
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(r'(\|)(\s*)(%s)' % alphanumid_re,
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bygroups(Punctuation, Text, Name.Class)),
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(r'(\|)(\s+)(%s)' % symbolicid_re,
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bygroups(Punctuation, Text, Name.Class)),
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include('breakout'),
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include('core'),
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(r'\S+', Error),
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],
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# Dealing with what comes after an exception
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'ename': [
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include('whitespace'),
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(r'(exception|and)\b(\s+)(%s)' % alphanumid_re,
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bygroups(Keyword.Reserved, Text, Name.Class)),
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(r'(exception|and)\b(\s*)(%s)' % symbolicid_re,
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bygroups(Keyword.Reserved, Text, Name.Class)),
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(r'\b(of)\b(?!\')', Keyword.Reserved),
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include('breakout'),
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include('core'),
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(r'\S+', Error),
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],
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'datcon': [
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include('whitespace'),
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(r'(%s)' % alphanumid_re, Name.Class, '#pop'),
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(r'(%s)' % symbolicid_re, Name.Class, '#pop'),
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(r'\S+', Error, '#pop'),
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],
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# Series of type variables
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'tyvarseq': [
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(r'\s', Text),
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(r'\(\*', Comment.Multiline, 'comment'),
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(r'\'[\w\']*', Name.Decorator),
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(alphanumid_re, Name),
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(r',', Punctuation),
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(r'\)', Punctuation, '#pop'),
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(symbolicid_re, Name),
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],
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'comment': [
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(r'[^(*)]', Comment.Multiline),
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(r'\(\*', Comment.Multiline, '#push'),
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(r'\*\)', Comment.Multiline, '#pop'),
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|
|
(r'[(*)]', Comment.Multiline),
|
||
|
|
],
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
class OcamlLexer(RegexLexer):
|
||
|
|
"""
|
||
|
|
For the OCaml language.
|
||
|
|
|
||
|
|
.. versionadded:: 0.7
|
||
|
|
"""
|
||
|
|
|
||
|
|
name = 'OCaml'
|
||
|
|
aliases = ['ocaml']
|
||
|
|
filenames = ['*.ml', '*.mli', '*.mll', '*.mly']
|
||
|
|
mimetypes = ['text/x-ocaml']
|
||
|
|
|
||
|
|
keywords = (
|
||
|
|
'as', 'assert', 'begin', 'class', 'constraint', 'do', 'done',
|
||
|
|
'downto', 'else', 'end', 'exception', 'external', 'false',
|
||
|
|
'for', 'fun', 'function', 'functor', 'if', 'in', 'include',
|
||
|
|
'inherit', 'initializer', 'lazy', 'let', 'match', 'method',
|
||
|
|
'module', 'mutable', 'new', 'object', 'of', 'open', 'private',
|
||
|
|
'raise', 'rec', 'sig', 'struct', 'then', 'to', 'true', 'try',
|
||
|
|
'type', 'value', 'val', 'virtual', 'when', 'while', 'with',
|
||
|
|
)
|
||
|
|
keyopts = (
|
||
|
|
'!=', '#', '&', '&&', r'\(', r'\)', r'\*', r'\+', ',', '-',
|
||
|
|
r'-\.', '->', r'\.', r'\.\.', ':', '::', ':=', ':>', ';', ';;', '<',
|
||
|
|
'<-', '=', '>', '>]', r'>\}', r'\?', r'\?\?', r'\[', r'\[<', r'\[>',
|
||
|
|
r'\[\|', ']', '_', '`', r'\{', r'\{<', r'\|', r'\|]', r'\}', '~'
|
||
|
|
)
|
||
|
|
|
||
|
|
operators = r'[!$%&*+\./:<=>?@^|~-]'
|
||
|
|
word_operators = ('and', 'asr', 'land', 'lor', 'lsl', 'lxor', 'mod', 'or')
|
||
|
|
prefix_syms = r'[!?~]'
|
||
|
|
infix_syms = r'[=<>@^|&+\*/$%-]'
|
||
|
|
primitives = ('unit', 'int', 'float', 'bool', 'string', 'char', 'list', 'array')
|
||
|
|
|
||
|
|
tokens = {
|
||
|
|
'escape-sequence': [
|
||
|
|
(r'\\[\\"\'ntbr]', String.Escape),
|
||
|
|
(r'\\[0-9]{3}', String.Escape),
|
||
|
|
(r'\\x[0-9a-fA-F]{2}', String.Escape),
|
||
|
|
],
|
||
|
|
'root': [
|
||
|
|
(r'\s+', Text),
|
||
|
|
(r'false|true|\(\)|\[\]', Name.Builtin.Pseudo),
|
||
|
|
(r'\b([A-Z][\w\']*)(?=\s*\.)', Name.Namespace, 'dotted'),
|
||
|
|
(r'\b([A-Z][\w\']*)', Name.Class),
|
||
|
|
(r'\(\*(?![)])', Comment, 'comment'),
|
||
|
|
(r'\b(%s)\b' % '|'.join(keywords), Keyword),
|
||
|
|
(r'(%s)' % '|'.join(keyopts[::-1]), Operator),
|
||
|
|
(r'(%s|%s)?%s' % (infix_syms, prefix_syms, operators), Operator),
|
||
|
|
(r'\b(%s)\b' % '|'.join(word_operators), Operator.Word),
|
||
|
|
(r'\b(%s)\b' % '|'.join(primitives), Keyword.Type),
|
||
|
|
|
||
|
|
(r"[^\W\d][\w']*", Name),
|
||
|
|
|
||
|
|
(r'-?\d[\d_]*(.[\d_]*)?([eE][+\-]?\d[\d_]*)', Number.Float),
|
||
|
|
(r'0[xX][\da-fA-F][\da-fA-F_]*', Number.Hex),
|
||
|
|
(r'0[oO][0-7][0-7_]*', Number.Oct),
|
||
|
|
(r'0[bB][01][01_]*', Number.Bin),
|
||
|
|
(r'\d[\d_]*', Number.Integer),
|
||
|
|
|
||
|
|
(r"'(?:(\\[\\\"'ntbr ])|(\\[0-9]{3})|(\\x[0-9a-fA-F]{2}))'",
|
||
|
|
String.Char),
|
||
|
|
(r"'.'", String.Char),
|
||
|
|
(r"'", Keyword), # a stray quote is another syntax element
|
||
|
|
|
||
|
|
(r'"', String.Double, 'string'),
|
||
|
|
|
||
|
|
(r'[~?][a-z][\w\']*:', Name.Variable),
|
||
|
|
],
|
||
|
|
'comment': [
|
||
|
|
(r'[^(*)]+', Comment),
|
||
|
|
(r'\(\*', Comment, '#push'),
|
||
|
|
(r'\*\)', Comment, '#pop'),
|
||
|
|
(r'[(*)]', Comment),
|
||
|
|
],
|
||
|
|
'string': [
|
||
|
|
(r'[^\\"]+', String.Double),
|
||
|
|
include('escape-sequence'),
|
||
|
|
(r'\\\n', String.Double),
|
||
|
|
(r'"', String.Double, '#pop'),
|
||
|
|
],
|
||
|
|
'dotted': [
|
||
|
|
(r'\s+', Text),
|
||
|
|
(r'\.', Punctuation),
|
||
|
|
(r'[A-Z][\w\']*(?=\s*\.)', Name.Namespace),
|
||
|
|
(r'[A-Z][\w\']*', Name.Class, '#pop'),
|
||
|
|
(r'[a-z_][\w\']*', Name, '#pop'),
|
||
|
|
default('#pop'),
|
||
|
|
],
|
||
|
|
}
|
||
|
|
|
||
|
|
class OpaLexer(RegexLexer):
|
||
|
|
"""
|
||
|
|
Lexer for the Opa language (http://opalang.org).
|
||
|
|
|
||
|
|
.. versionadded:: 1.5
|
||
|
|
"""
|
||
|
|
|
||
|
|
name = 'Opa'
|
||
|
|
aliases = ['opa']
|
||
|
|
filenames = ['*.opa']
|
||
|
|
mimetypes = ['text/x-opa']
|
||
|
|
|
||
|
|
# most of these aren't strictly keywords
|
||
|
|
# but if you color only real keywords, you might just
|
||
|
|
# as well not color anything
|
||
|
|
keywords = (
|
||
|
|
'and', 'as', 'begin', 'case', 'client', 'css', 'database', 'db', 'do',
|
||
|
|
'else', 'end', 'external', 'forall', 'function', 'if', 'import',
|
||
|
|
'match', 'module', 'or', 'package', 'parser', 'rec', 'server', 'then',
|
||
|
|
'type', 'val', 'with', 'xml_parser',
|
||
|
|
)
|
||
|
|
|
||
|
|
# matches both stuff and `stuff`
|
||
|
|
ident_re = r'(([a-zA-Z_]\w*)|(`[^`]*`))'
|
||
|
|
|
||
|
|
op_re = r'[.=\-<>,@~%/+?*&^!]'
|
||
|
|
punc_re = r'[()\[\],;|]' # '{' and '}' are treated elsewhere
|
||
|
|
# because they are also used for inserts
|
||
|
|
|
||
|
|
tokens = {
|
||
|
|
# copied from the caml lexer, should be adapted
|
||
|
|
'escape-sequence': [
|
||
|
|
(r'\\[\\"\'ntr}]', String.Escape),
|
||
|
|
(r'\\[0-9]{3}', String.Escape),
|
||
|
|
(r'\\x[0-9a-fA-F]{2}', String.Escape),
|
||
|
|
],
|
||
|
|
|
||
|
|
# factorizing these rules, because they are inserted many times
|
||
|
|
'comments': [
|
||
|
|
(r'/\*', Comment, 'nested-comment'),
|
||
|
|
(r'//.*?$', Comment),
|
||
|
|
],
|
||
|
|
'comments-and-spaces': [
|
||
|
|
include('comments'),
|
||
|
|
(r'\s+', Text),
|
||
|
|
],
|
||
|
|
|
||
|
|
'root': [
|
||
|
|
include('comments-and-spaces'),
|
||
|
|
# keywords
|
||
|
|
(words(keywords, prefix=r'\b', suffix=r'\b'), Keyword),
|
||
|
|
# directives
|
||
|
|
# we could parse the actual set of directives instead of anything
|
||
|
|
# starting with @, but this is troublesome
|
||
|
|
# because it needs to be adjusted all the time
|
||
|
|
# and assuming we parse only sources that compile, it is useless
|
||
|
|
(r'@' + ident_re + r'\b', Name.Builtin.Pseudo),
|
||
|
|
|
||
|
|
# number literals
|
||
|
|
(r'-?.[\d]+([eE][+\-]?\d+)', Number.Float),
|
||
|
|
(r'-?\d+.\d*([eE][+\-]?\d+)', Number.Float),
|
||
|
|
(r'-?\d+[eE][+\-]?\d+', Number.Float),
|
||
|
|
(r'0[xX][\da-fA-F]+', Number.Hex),
|
||
|
|
(r'0[oO][0-7]+', Number.Oct),
|
||
|
|
(r'0[bB][01]+', Number.Bin),
|
||
|
|
(r'\d+', Number.Integer),
|
||
|
|
# color literals
|
||
|
|
(r'#[\da-fA-F]{3,6}', Number.Integer),
|
||
|
|
|
||
|
|
# string literals
|
||
|
|
(r'"', String.Double, 'string'),
|
||
|
|
# char literal, should be checked because this is the regexp from
|
||
|
|
# the caml lexer
|
||
|
|
(r"'(?:(\\[\\\"'ntbr ])|(\\[0-9]{3})|(\\x[0-9a-fA-F]{2})|.)'",
|
||
|
|
String.Char),
|
||
|
|
|
||
|
|
# this is meant to deal with embedded exprs in strings
|
||
|
|
# every time we find a '}' we pop a state so that if we were
|
||
|
|
# inside a string, we are back in the string state
|
||
|
|
# as a consequence, we must also push a state every time we find a
|
||
|
|
# '{' or else we will have errors when parsing {} for instance
|
||
|
|
(r'\{', Operator, '#push'),
|
||
|
|
(r'\}', Operator, '#pop'),
|
||
|
|
|
||
|
|
# html literals
|
||
|
|
# this is a much more strict that the actual parser,
|
||
|
|
# since a<b would not be parsed as html
|
||
|
|
# but then again, the parser is way too lax, and we can't hope
|
||
|
|
# to have something as tolerant
|
||
|
|
(r'<(?=[a-zA-Z>])', String.Single, 'html-open-tag'),
|
||
|
|
|
||
|
|
# db path
|
||
|
|
# matching the '[_]' in '/a[_]' because it is a part
|
||
|
|
# of the syntax of the db path definition
|
||
|
|
# unfortunately, i don't know how to match the ']' in
|
||
|
|
# /a[1], so this is somewhat inconsistent
|
||
|
|
(r'[@?!]?(/\w+)+(\[_\])?', Name.Variable),
|
||
|
|
# putting the same color on <- as on db path, since
|
||
|
|
# it can be used only to mean Db.write
|
||
|
|
(r'<-(?!'+op_re+r')', Name.Variable),
|
||
|
|
|
||
|
|
# 'modules'
|
||
|
|
# although modules are not distinguished by their names as in caml
|
||
|
|
# the standard library seems to follow the convention that modules
|
||
|
|
# only area capitalized
|
||
|
|
(r'\b([A-Z]\w*)(?=\.)', Name.Namespace),
|
||
|
|
|
||
|
|
# operators
|
||
|
|
# = has a special role because this is the only
|
||
|
|
# way to syntactic distinguish binding constructions
|
||
|
|
# unfortunately, this colors the equal in {x=2} too
|
||
|
|
(r'=(?!'+op_re+r')', Keyword),
|
||
|
|
(r'(%s)+' % op_re, Operator),
|
||
|
|
(r'(%s)+' % punc_re, Operator),
|
||
|
|
|
||
|
|
# coercions
|
||
|
|
(r':', Operator, 'type'),
|
||
|
|
# type variables
|
||
|
|
# we need this rule because we don't parse specially type
|
||
|
|
# definitions so in "type t('a) = ...", "'a" is parsed by 'root'
|
||
|
|
("'"+ident_re, Keyword.Type),
|
||
|
|
|
||
|
|
# id literal, #something, or #{expr}
|
||
|
|
(r'#'+ident_re, String.Single),
|
||
|
|
(r'#(?=\{)', String.Single),
|
||
|
|
|
||
|
|
# identifiers
|
||
|
|
# this avoids to color '2' in 'a2' as an integer
|
||
|
|
(ident_re, Text),
|
||
|
|
|
||
|
|
# default, not sure if that is needed or not
|
||
|
|
# (r'.', Text),
|
||
|
|
],
|
||
|
|
|
||
|
|
# it is quite painful to have to parse types to know where they end
|
||
|
|
# this is the general rule for a type
|
||
|
|
# a type is either:
|
||
|
|
# * -> ty
|
||
|
|
# * type-with-slash
|
||
|
|
# * type-with-slash -> ty
|
||
|
|
# * type-with-slash (, type-with-slash)+ -> ty
|
||
|
|
#
|
||
|
|
# the code is pretty funky in here, but this code would roughly
|
||
|
|
# translate in caml to:
|
||
|
|
# let rec type stream =
|
||
|
|
# match stream with
|
||
|
|
# | [< "->"; stream >] -> type stream
|
||
|
|
# | [< ""; stream >] ->
|
||
|
|
# type_with_slash stream
|
||
|
|
# type_lhs_1 stream;
|
||
|
|
# and type_1 stream = ...
|
||
|
|
'type': [
|
||
|
|
include('comments-and-spaces'),
|
||
|
|
(r'->', Keyword.Type),
|
||
|
|
default(('#pop', 'type-lhs-1', 'type-with-slash')),
|
||
|
|
],
|
||
|
|
|
||
|
|
# parses all the atomic or closed constructions in the syntax of type
|
||
|
|
# expressions: record types, tuple types, type constructors, basic type
|
||
|
|
# and type variables
|
||
|
|
'type-1': [
|
||
|
|
include('comments-and-spaces'),
|
||
|
|
(r'\(', Keyword.Type, ('#pop', 'type-tuple')),
|
||
|
|
(r'~?\{', Keyword.Type, ('#pop', 'type-record')),
|
||
|
|
(ident_re+r'\(', Keyword.Type, ('#pop', 'type-tuple')),
|
||
|
|
(ident_re, Keyword.Type, '#pop'),
|
||
|
|
("'"+ident_re, Keyword.Type),
|
||
|
|
# this case is not in the syntax but sometimes
|
||
|
|
# we think we are parsing types when in fact we are parsing
|
||
|
|
# some css, so we just pop the states until we get back into
|
||
|
|
# the root state
|
||
|
|
default('#pop'),
|
||
|
|
],
|
||
|
|
|
||
|
|
# type-with-slash is either:
|
||
|
|
# * type-1
|
||
|
|
# * type-1 (/ type-1)+
|
||
|
|
'type-with-slash': [
|
||
|
|
include('comments-and-spaces'),
|
||
|
|
default(('#pop', 'slash-type-1', 'type-1')),
|
||
|
|
],
|
||
|
|
'slash-type-1': [
|
||
|
|
include('comments-and-spaces'),
|
||
|
|
('/', Keyword.Type, ('#pop', 'type-1')),
|
||
|
|
# same remark as above
|
||
|
|
default('#pop'),
|
||
|
|
],
|
||
|
|
|
||
|
|
# we go in this state after having parsed a type-with-slash
|
||
|
|
# while trying to parse a type
|
||
|
|
# and at this point we must determine if we are parsing an arrow
|
||
|
|
# type (in which case we must continue parsing) or not (in which
|
||
|
|
# case we stop)
|
||
|
|
'type-lhs-1': [
|
||
|
|
include('comments-and-spaces'),
|
||
|
|
(r'->', Keyword.Type, ('#pop', 'type')),
|
||
|
|
(r'(?=,)', Keyword.Type, ('#pop', 'type-arrow')),
|
||
|
|
default('#pop'),
|
||
|
|
],
|
||
|
|
'type-arrow': [
|
||
|
|
include('comments-and-spaces'),
|
||
|
|
# the look ahead here allows to parse f(x : int, y : float -> truc)
|
||
|
|
# correctly
|
||
|
|
(r',(?=[^:]*?->)', Keyword.Type, 'type-with-slash'),
|
||
|
|
(r'->', Keyword.Type, ('#pop', 'type')),
|
||
|
|
# same remark as above
|
||
|
|
default('#pop'),
|
||
|
|
],
|
||
|
|
|
||
|
|
# no need to do precise parsing for tuples and records
|
||
|
|
# because they are closed constructions, so we can simply
|
||
|
|
# find the closing delimiter
|
||
|
|
# note that this function would be not work if the source
|
||
|
|
# contained identifiers like `{)` (although it could be patched
|
||
|
|
# to support it)
|
||
|
|
'type-tuple': [
|
||
|
|
include('comments-and-spaces'),
|
||
|
|
(r'[^()/*]+', Keyword.Type),
|
||
|
|
(r'[/*]', Keyword.Type),
|
||
|
|
(r'\(', Keyword.Type, '#push'),
|
||
|
|
(r'\)', Keyword.Type, '#pop'),
|
||
|
|
],
|
||
|
|
'type-record': [
|
||
|
|
include('comments-and-spaces'),
|
||
|
|
(r'[^{}/*]+', Keyword.Type),
|
||
|
|
(r'[/*]', Keyword.Type),
|
||
|
|
(r'\{', Keyword.Type, '#push'),
|
||
|
|
(r'\}', Keyword.Type, '#pop'),
|
||
|
|
],
|
||
|
|
|
||
|
|
# 'type-tuple': [
|
||
|
|
# include('comments-and-spaces'),
|
||
|
|
# (r'\)', Keyword.Type, '#pop'),
|
||
|
|
# default(('#pop', 'type-tuple-1', 'type-1')),
|
||
|
|
# ],
|
||
|
|
# 'type-tuple-1': [
|
||
|
|
# include('comments-and-spaces'),
|
||
|
|
# (r',?\s*\)', Keyword.Type, '#pop'), # ,) is a valid end of tuple, in (1,)
|
||
|
|
# (r',', Keyword.Type, 'type-1'),
|
||
|
|
# ],
|
||
|
|
# 'type-record':[
|
||
|
|
# include('comments-and-spaces'),
|
||
|
|
# (r'\}', Keyword.Type, '#pop'),
|
||
|
|
# (r'~?(?:\w+|`[^`]*`)', Keyword.Type, 'type-record-field-expr'),
|
||
|
|
# ],
|
||
|
|
# 'type-record-field-expr': [
|
||
|
|
#
|
||
|
|
# ],
|
||
|
|
|
||
|
|
'nested-comment': [
|
||
|
|
(r'[^/*]+', Comment),
|
||
|
|
(r'/\*', Comment, '#push'),
|
||
|
|
(r'\*/', Comment, '#pop'),
|
||
|
|
(r'[/*]', Comment),
|
||
|
|
],
|
||
|
|
|
||
|
|
# the copy pasting between string and single-string
|
||
|
|
# is kinda sad. Is there a way to avoid that??
|
||
|
|
'string': [
|
||
|
|
(r'[^\\"{]+', String.Double),
|
||
|
|
(r'"', String.Double, '#pop'),
|
||
|
|
(r'\{', Operator, 'root'),
|
||
|
|
include('escape-sequence'),
|
||
|
|
],
|
||
|
|
'single-string': [
|
||
|
|
(r'[^\\\'{]+', String.Double),
|
||
|
|
(r'\'', String.Double, '#pop'),
|
||
|
|
(r'\{', Operator, 'root'),
|
||
|
|
include('escape-sequence'),
|
||
|
|
],
|
||
|
|
|
||
|
|
# all the html stuff
|
||
|
|
# can't really reuse some existing html parser
|
||
|
|
# because we must be able to parse embedded expressions
|
||
|
|
|
||
|
|
# we are in this state after someone parsed the '<' that
|
||
|
|
# started the html literal
|
||
|
|
'html-open-tag': [
|
||
|
|
(r'[\w\-:]+', String.Single, ('#pop', 'html-attr')),
|
||
|
|
(r'>', String.Single, ('#pop', 'html-content')),
|
||
|
|
],
|
||
|
|
|
||
|
|
# we are in this state after someone parsed the '</' that
|
||
|
|
# started the end of the closing tag
|
||
|
|
'html-end-tag': [
|
||
|
|
# this is a star, because </> is allowed
|
||
|
|
(r'[\w\-:]*>', String.Single, '#pop'),
|
||
|
|
],
|
||
|
|
|
||
|
|
# we are in this state after having parsed '<ident(:ident)?'
|
||
|
|
# we thus parse a possibly empty list of attributes
|
||
|
|
'html-attr': [
|
||
|
|
(r'\s+', Text),
|
||
|
|
(r'[\w\-:]+=', String.Single, 'html-attr-value'),
|
||
|
|
(r'/>', String.Single, '#pop'),
|
||
|
|
(r'>', String.Single, ('#pop', 'html-content')),
|
||
|
|
],
|
||
|
|
|
||
|
|
'html-attr-value': [
|
||
|
|
(r"'", String.Single, ('#pop', 'single-string')),
|
||
|
|
(r'"', String.Single, ('#pop', 'string')),
|
||
|
|
(r'#'+ident_re, String.Single, '#pop'),
|
||
|
|
(r'#(?=\{)', String.Single, ('#pop', 'root')),
|
||
|
|
(r'[^"\'{`=<>]+', String.Single, '#pop'),
|
||
|
|
(r'\{', Operator, ('#pop', 'root')), # this is a tail call!
|
||
|
|
],
|
||
|
|
|
||
|
|
# we should probably deal with '\' escapes here
|
||
|
|
'html-content': [
|
||
|
|
(r'<!--', Comment, 'html-comment'),
|
||
|
|
(r'</', String.Single, ('#pop', 'html-end-tag')),
|
||
|
|
(r'<', String.Single, 'html-open-tag'),
|
||
|
|
(r'\{', Operator, 'root'),
|
||
|
|
(r'[^<{]+', String.Single),
|
||
|
|
],
|
||
|
|
|
||
|
|
'html-comment': [
|
||
|
|
(r'-->', Comment, '#pop'),
|
||
|
|
(r'[^\-]+|-', Comment),
|
||
|
|
],
|
||
|
|
}
|
||
|
|
|
||
|
|
class ReasonLexer(RegexLexer):
|
||
|
|
"""
|
||
|
|
For the ReasonML language (https://reasonml.github.io/).
|
||
|
|
|
||
|
|
.. versionadded:: 2.6
|
||
|
|
"""
|
||
|
|
|
||
|
|
name = 'ReasonML'
|
||
|
|
aliases = ['reason', "reasonml"]
|
||
|
|
filenames = ['*.re', '*.rei']
|
||
|
|
mimetypes = ['text/x-reasonml']
|
||
|
|
|
||
|
|
keywords = (
|
||
|
|
'as', 'assert', 'begin', 'class', 'constraint', 'do', 'done', 'downto',
|
||
|
|
'else', 'end', 'exception', 'external', 'false', 'for', 'fun', 'esfun',
|
||
|
|
'function', 'functor', 'if', 'in', 'include', 'inherit', 'initializer', 'lazy',
|
||
|
|
'let', 'switch', 'module', 'pub', 'mutable', 'new', 'nonrec', 'object', 'of',
|
||
|
|
'open', 'pri', 'rec', 'sig', 'struct', 'then', 'to', 'true', 'try',
|
||
|
|
'type', 'val', 'virtual', 'when', 'while', 'with'
|
||
|
|
)
|
||
|
|
keyopts = (
|
||
|
|
'!=', '#', '&', '&&', r'\(', r'\)', r'\*', r'\+', ',', '-',
|
||
|
|
r'-\.', '=>', r'\.', r'\.\.', r'\.\.\.', ':', '::', ':=', ':>', ';', ';;', '<',
|
||
|
|
'<-', '=', '>', '>]', r'>\}', r'\?', r'\?\?', r'\[', r'\[<', r'\[>',
|
||
|
|
r'\[\|', ']', '_', '`', r'\{', r'\{<', r'\|\|', r'\|', r'\|]', r'\}', '~'
|
||
|
|
)
|
||
|
|
|
||
|
|
operators = r'[!$%&*+\./:<=>?@^|~-]'
|
||
|
|
word_operators = ('and', 'asr', 'land', 'lor', 'lsl', 'lsr', 'lxor', 'mod', 'or')
|
||
|
|
prefix_syms = r'[!?~]'
|
||
|
|
infix_syms = r'[=<>@^|&+\*/$%-]'
|
||
|
|
primitives = ('unit', 'int', 'float', 'bool', 'string', 'char', 'list', 'array')
|
||
|
|
|
||
|
|
tokens = {
|
||
|
|
'escape-sequence': [
|
||
|
|
(r'\\[\\"\'ntbr]', String.Escape),
|
||
|
|
(r'\\[0-9]{3}', String.Escape),
|
||
|
|
(r'\\x[0-9a-fA-F]{2}', String.Escape),
|
||
|
|
],
|
||
|
|
'root': [
|
||
|
|
(r'\s+', Text),
|
||
|
|
(r'false|true|\(\)|\[\]', Name.Builtin.Pseudo),
|
||
|
|
(r'\b([A-Z][\w\']*)(?=\s*\.)', Name.Namespace, 'dotted'),
|
||
|
|
(r'\b([A-Z][\w\']*)', Name.Class),
|
||
|
|
(r'//.*?\n', Comment.Single),
|
||
|
|
(r'\/\*(?![\/])', Comment.Multiline, 'comment'),
|
||
|
|
(r'\b(%s)\b' % '|'.join(keywords), Keyword),
|
||
|
|
(r'(%s)' % '|'.join(keyopts[::-1]), Operator.Word),
|
||
|
|
(r'(%s|%s)?%s' % (infix_syms, prefix_syms, operators), Operator),
|
||
|
|
(r'\b(%s)\b' % '|'.join(word_operators), Operator.Word),
|
||
|
|
(r'\b(%s)\b' % '|'.join(primitives), Keyword.Type),
|
||
|
|
|
||
|
|
(r"[^\W\d][\w']*", Name),
|
||
|
|
|
||
|
|
(r'-?\d[\d_]*(.[\d_]*)?([eE][+\-]?\d[\d_]*)', Number.Float),
|
||
|
|
(r'0[xX][\da-fA-F][\da-fA-F_]*', Number.Hex),
|
||
|
|
(r'0[oO][0-7][0-7_]*', Number.Oct),
|
||
|
|
(r'0[bB][01][01_]*', Number.Bin),
|
||
|
|
(r'\d[\d_]*', Number.Integer),
|
||
|
|
|
||
|
|
(r"'(?:(\\[\\\"'ntbr ])|(\\[0-9]{3})|(\\x[0-9a-fA-F]{2}))'",
|
||
|
|
String.Char),
|
||
|
|
(r"'.'", String.Char),
|
||
|
|
(r"'", Keyword),
|
||
|
|
|
||
|
|
(r'"', String.Double, 'string'),
|
||
|
|
|
||
|
|
(r'[~?][a-z][\w\']*:', Name.Variable),
|
||
|
|
],
|
||
|
|
'comment': [
|
||
|
|
(r'[^\/*]+', Comment.Multiline),
|
||
|
|
(r'\/\*', Comment.Multiline, '#push'),
|
||
|
|
(r'\*\/', Comment.Multiline, '#pop'),
|
||
|
|
(r'[\*]', Comment.Multiline),
|
||
|
|
],
|
||
|
|
'string': [
|
||
|
|
(r'[^\\"]+', String.Double),
|
||
|
|
include('escape-sequence'),
|
||
|
|
(r'\\\n', String.Double),
|
||
|
|
(r'"', String.Double, '#pop'),
|
||
|
|
],
|
||
|
|
'dotted': [
|
||
|
|
(r'\s+', Text),
|
||
|
|
(r'\.', Punctuation),
|
||
|
|
(r'[A-Z][\w\']*(?=\s*\.)', Name.Namespace),
|
||
|
|
(r'[A-Z][\w\']*', Name.Class, '#pop'),
|
||
|
|
(r'[a-z_][\w\']*', Name, '#pop'),
|
||
|
|
default('#pop'),
|
||
|
|
],
|
||
|
|
}
|