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- """
- pygments.lexers.eiffel
- ~~~~~~~~~~~~~~~~~~~~~~
- Lexer for the Eiffel language.
- :copyright: Copyright 2006-present by the Pygments team, see AUTHORS.
- :license: BSD, see LICENSE for details.
- """
- from pygments.lexer import RegexLexer, include, words, bygroups
- from pygments.token import Comment, Operator, Keyword, Name, String, Number, \
- Punctuation, Whitespace
- __all__ = ['EiffelLexer']
- class EiffelLexer(RegexLexer):
- """
- For Eiffel source code.
- """
- name = 'Eiffel'
- url = 'https://www.eiffel.com'
- aliases = ['eiffel']
- filenames = ['*.e']
- mimetypes = ['text/x-eiffel']
- version_added = '2.0'
- tokens = {
- 'root': [
- (r'[^\S\n]+', Whitespace),
- (r'--.*?$', Comment.Single),
- # Please note that keyword and operator are case insensitive.
- (r'(?i)(true|false|void|current|result|precursor)\b', Keyword.Constant),
- (r'(?i)(not|xor|implies|or)\b', Operator.Word),
- (r'(?i)(and)(?:(\s+)(then))?\b',
- bygroups(Operator.Word, Whitespace, Operator.Word)),
- (r'(?i)(or)(?:(\s+)(else))?\b',
- bygroups(Operator.Word, Whitespace, Operator.Word)),
- (words((
- 'across', 'agent', 'alias', 'all', 'as', 'assign', 'attached',
- 'attribute', 'check', 'class', 'convert', 'create', 'debug',
- 'deferred', 'detachable', 'do', 'else', 'elseif', 'end', 'ensure',
- 'expanded', 'export', 'external', 'feature', 'from', 'frozen', 'if',
- 'inherit', 'inspect', 'invariant', 'like', 'local', 'loop', 'none',
- 'note', 'obsolete', 'old', 'once', 'only', 'redefine', 'rename',
- 'require', 'rescue', 'retry', 'select', 'separate', 'then',
- 'undefine', 'until', 'variant', 'when'), prefix=r'(?i)\b', suffix=r'\b'),
- Keyword.Reserved),
- (r'"\[([^\]%]|%([\s\S])|\][^"])*?\]"', String),
- (r'"([^"%\n]|%.)*?"', String),
- include('numbers'),
- (r"'([^'%]|%'|%%)'", String.Char),
- (r"(//|\\\\|>=|<=|:=|/=|~|/~|[\\?!#%&@|+/\-=>*$<^\[\]])", Operator),
- (r"([{}():;,.])", Punctuation),
- (r'([a-z]\w*)|([A-Z][A-Z0-9_]*[a-z]\w*)', Name),
- (r'([A-Z][A-Z0-9_]*)', Name.Class),
- (r'\n+', Whitespace),
- ],
- 'numbers': [
- (r'0[xX][a-fA-F0-9]+', Number.Hex),
- (r'0[bB][01]+', Number.Bin),
- (r'0[cC][0-7]+', Number.Oct),
- (r'([0-9]+\.[0-9]*)|([0-9]*\.[0-9]+)', Number.Float),
- (r'[0-9]+', Number.Integer),
- ],
- }
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