intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 113 insertions, 0 deletions

diff --git a/contrib/python/Pygments/py3/pygments/lexers/verification.py b/contrib/python/Pygments/py3/pygments/lexers/verification.py
new file mode 100644
index 00000000000..2d473ae8128
--- /dev/null
+++ b/contrib/python/Pygments/py3/pygments/lexers/verification.py
@@ -0,0 +1,113 @@
+"""
+    pygments.lexers.verification
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+    Lexer for Intermediate Verification Languages (IVLs).
+
+    :copyright: Copyright 2006-2021 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 <https://boogie.codeplex.com/>`_ source code.
+
+    .. versionadded:: 2.1
+    """
+    name = 'Boogie'
+    aliases = ['boogie']
+    filenames = ['*.bpl']
+
+    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 <https://bitbucket.org/viperproject/silver>`_ source code.
+
+    .. versionadded:: 2.2
+    """
+    name = 'Silver'
+    aliases = ['silver']
+    filenames = ['*.sil', '*.vpr']
+
+    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),
+        ],
+    }