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"""
pygments.lexers.verification
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Lexer for Intermediate Verification Languages (IVLs).
:copyright: Copyright 2006-2025 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
from pygments.lexer import RegexLexer, include, words
from pygments.token import Comment, Operator, Keyword, Name, Number, \
Punctuation, Text, Generic
__all__ = ['BoogieLexer', 'SilverLexer']
class BoogieLexer(RegexLexer):
"""
For Boogie source code.
"""
name = 'Boogie'
url = 'https://boogie-docs.readthedocs.io/en/latest/'
aliases = ['boogie']
filenames = ['*.bpl']
version_added = '2.1'
tokens = {
'root': [
# Whitespace and Comments
(r'\n', Text),
(r'\s+', Text),
(r'\\\n', Text), # line continuation
(r'//[/!](.*?)\n', Comment.Doc),
(r'//(.*?)\n', Comment.Single),
(r'/\*', Comment.Multiline, 'comment'),
(words((
'axiom', 'break', 'call', 'ensures', 'else', 'exists', 'function',
'forall', 'if', 'invariant', 'modifies', 'procedure', 'requires',
'then', 'var', 'while'),
suffix=r'\b'), Keyword),
(words(('const',), suffix=r'\b'), Keyword.Reserved),
(words(('bool', 'int', 'ref'), suffix=r'\b'), Keyword.Type),
include('numbers'),
(r"(>=|<=|:=|!=|==>|&&|\|\||[+/\-=>*<\[\]])", Operator),
(r'\{.*?\}', Generic.Emph), #triggers
(r"([{}():;,.])", Punctuation),
# Identifier
(r'[a-zA-Z_]\w*', Name),
],
'comment': [
(r'[^*/]+', Comment.Multiline),
(r'/\*', Comment.Multiline, '#push'),
(r'\*/', Comment.Multiline, '#pop'),
(r'[*/]', Comment.Multiline),
],
'numbers': [
(r'[0-9]+', Number.Integer),
],
}
class SilverLexer(RegexLexer):
"""
For Silver source code.
"""
name = 'Silver'
aliases = ['silver']
filenames = ['*.sil', '*.vpr']
url = 'https://github.com/viperproject/silver'
version_added = '2.2'
tokens = {
'root': [
# Whitespace and Comments
(r'\n', Text),
(r'\s+', Text),
(r'\\\n', Text), # line continuation
(r'//[/!](.*?)\n', Comment.Doc),
(r'//(.*?)\n', Comment.Single),
(r'/\*', Comment.Multiline, 'comment'),
(words((
'result', 'true', 'false', 'null', 'method', 'function',
'predicate', 'program', 'domain', 'axiom', 'var', 'returns',
'field', 'define', 'fold', 'unfold', 'inhale', 'exhale', 'new', 'assert',
'assume', 'goto', 'while', 'if', 'elseif', 'else', 'fresh',
'constraining', 'Seq', 'Set', 'Multiset', 'union', 'intersection',
'setminus', 'subset', 'unfolding', 'in', 'old', 'forall', 'exists',
'acc', 'wildcard', 'write', 'none', 'epsilon', 'perm', 'unique',
'apply', 'package', 'folding', 'label', 'forperm'),
suffix=r'\b'), Keyword),
(words(('requires', 'ensures', 'invariant'), suffix=r'\b'), Name.Decorator),
(words(('Int', 'Perm', 'Bool', 'Ref', 'Rational'), suffix=r'\b'), Keyword.Type),
include('numbers'),
(r'[!%&*+=|?:<>/\-\[\]]', Operator),
(r'\{.*?\}', Generic.Emph), #triggers
(r'([{}():;,.])', Punctuation),
# Identifier
(r'[\w$]\w*', Name),
],
'comment': [
(r'[^*/]+', Comment.Multiline),
(r'/\*', Comment.Multiline, '#push'),
(r'\*/', Comment.Multiline, '#pop'),
(r'[*/]', Comment.Multiline),
],
'numbers': [
(r'[0-9]+', Number.Integer),
],
}