Mercurial > genshi > genshi-test

annotate markup/eval.py @ 170:f1ac0510d392

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Allow initialization of `Attributes` with keyword arguments.
author cmlenz
date Fri, 18 Aug 2006 12:40:55 +0000
parents 7888f4104cc0
children 194025141c89
rev   line source
1
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
1 # -*- coding: utf-8 -*-
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
2 #
66
822089ae65ce Switch copyright to Edgewall and URLs to markup.edgewall.org.
cmlenz
parents: 42
diff changeset
3 # Copyright (C) 2006 Edgewall Software
1
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
4 # All rights reserved.
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
5 #
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
6 # This software is licensed as described in the file COPYING, which
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
7 # you should have received as part of this distribution. The terms
66
822089ae65ce Switch copyright to Edgewall and URLs to markup.edgewall.org.
cmlenz
parents: 42
diff changeset
8 # are also available at http://markup.edgewall.org/wiki/License.
1
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
9 #
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
10 # This software consists of voluntary contributions made by many
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
11 # individuals. For the exact contribution history, see the revision
66
822089ae65ce Switch copyright to Edgewall and URLs to markup.edgewall.org.
cmlenz
parents: 42
diff changeset
12 # history and logs, available at http://markup.edgewall.org/log/.
27
b8456279c444 * Fix the boilerplate in the Python source files.
cmlenz
parents: 16
diff changeset
13
b8456279c444 * Fix the boilerplate in the Python source files.
cmlenz
parents: 16
diff changeset
14 """Support for "safe" evaluation of Python expressions."""
1
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
15
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
16 import __builtin__
87
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
17 from compiler import ast, parse
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
18 from compiler.pycodegen import ExpressionCodeGenerator
131
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
19 import new
1
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
20
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
21 __all__ = ['Expression']
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
22
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
23
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
24 class Expression(object):
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
25 """Evaluates Python expressions used in templates.
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
26
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
27 >>> data = dict(test='Foo', items=[1, 2, 3], dict={'some': 'thing'})
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
28 >>> Expression('test').evaluate(data)
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
29 'Foo'
81
cc034182061e Template expressions are now compiled to Python bytecode.
cmlenz
parents: 69
diff changeset
30
1
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
31 >>> Expression('items[0]').evaluate(data)
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
32 1
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
33 >>> Expression('items[-1]').evaluate(data)
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
34 3
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
35 >>> Expression('dict["some"]').evaluate(data)
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
36 'thing'
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
37
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
38 Similar to e.g. Javascript, expressions in templates can use the dot
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
39 notation for attribute access to access items in mappings:
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
40
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
41 >>> Expression('dict.some').evaluate(data)
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
42 'thing'
86
5d98c4259d68 Accidentially left some doctests disabled.
cmlenz
parents: 82
diff changeset
43
1
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
44 This also works the other way around: item access can be used to access
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
45 any object attribute (meaning there's no use for `getattr()` in templates):
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
46
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
47 >>> class MyClass(object):
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
48 ... myattr = 'Bar'
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
49 >>> data = dict(mine=MyClass(), key='myattr')
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
50 >>> Expression('mine.myattr').evaluate(data)
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
51 'Bar'
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
52 >>> Expression('mine["myattr"]').evaluate(data)
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
53 'Bar'
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
54 >>> Expression('mine[key]').evaluate(data)
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
55 'Bar'
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
56
31
9a958398bed9 * More test cases for expression evaluation.
cmlenz
parents: 30
diff changeset
57 All of the standard Python operators are available to template expressions.
1
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
58 Built-in functions such as `len()` are also available in template
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
59 expressions:
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
60
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
61 >>> data = dict(items=[1, 2, 3])
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
62 >>> Expression('len(items)').evaluate(data)
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
63 3
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
64 """
81
cc034182061e Template expressions are now compiled to Python bytecode.
cmlenz
parents: 69
diff changeset
65 __slots__ = ['source', 'code']
1
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
66
81
cc034182061e Template expressions are now compiled to Python bytecode.
cmlenz
parents: 69
diff changeset
67 def __init__(self, source, filename=None, lineno=-1):
165
4ed68a904235 Fix handling of keyword arguments in `py:def` directive. Thanks to Christian Boos for reporting the problem and providing the basic patch for this change.
cmlenz
parents: 145
diff changeset
68 if isinstance(source, basestring):
4ed68a904235 Fix handling of keyword arguments in `py:def` directive. Thanks to Christian Boos for reporting the problem and providing the basic patch for this change.
cmlenz
parents: 145
diff changeset
69 self.source = source
167
7888f4104cc0 Handle non-ASCII characters in expressions. Closes #29. Thanks to Arnar Birgisson for reporting the problem and comping up with a patch!
cmlenz
parents: 165
diff changeset
70 if isinstance(source, unicode):
7888f4104cc0 Handle non-ASCII characters in expressions. Closes #29. Thanks to Arnar Birgisson for reporting the problem and comping up with a patch!
cmlenz
parents: 165
diff changeset
71 source = '\xef\xbb\xbf' + source.encode('utf-8')
7888f4104cc0 Handle non-ASCII characters in expressions. Closes #29. Thanks to Arnar Birgisson for reporting the problem and comping up with a patch!
cmlenz
parents: 165
diff changeset
72 self.code = _compile(parse(source, 'eval'), self.source,
165
4ed68a904235 Fix handling of keyword arguments in `py:def` directive. Thanks to Christian Boos for reporting the problem and providing the basic patch for this change.
cmlenz
parents: 145
diff changeset
73 filename=filename, lineno=lineno)
4ed68a904235 Fix handling of keyword arguments in `py:def` directive. Thanks to Christian Boos for reporting the problem and providing the basic patch for this change.
cmlenz
parents: 145
diff changeset
74 else:
4ed68a904235 Fix handling of keyword arguments in `py:def` directive. Thanks to Christian Boos for reporting the problem and providing the basic patch for this change.
cmlenz
parents: 145
diff changeset
75 assert isinstance(source, ast.Node)
4ed68a904235 Fix handling of keyword arguments in `py:def` directive. Thanks to Christian Boos for reporting the problem and providing the basic patch for this change.
cmlenz
parents: 145
diff changeset
76 self.source = '?'
4ed68a904235 Fix handling of keyword arguments in `py:def` directive. Thanks to Christian Boos for reporting the problem and providing the basic patch for this change.
cmlenz
parents: 145
diff changeset
77 self.code = _compile(ast.Expression(source), filename=filename,
4ed68a904235 Fix handling of keyword arguments in `py:def` directive. Thanks to Christian Boos for reporting the problem and providing the basic patch for this change.
cmlenz
parents: 145
diff changeset
78 lineno=lineno)
1
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
79
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
80 def __repr__(self):
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
81 return '<Expression "%s">' % self.source
821114ec4f69 Initial import.
cmlenz
parents:
diff changeset
82
120
eb6cead67474 * Allow `py:with` directives to define `lambda`s
cmlenz
parents: 118
diff changeset
83 def evaluate(self, data, nocall=False):
81
cc034182061e Template expressions are now compiled to Python bytecode.
cmlenz
parents: 69
diff changeset
84 """Evaluate the expression against the given data dictionary.
cc034182061e Template expressions are now compiled to Python bytecode.
cmlenz
parents: 69
diff changeset
85
cc034182061e Template expressions are now compiled to Python bytecode.
cmlenz
parents: 69
diff changeset
86 @param data: a mapping containing the data to evaluate against
120
eb6cead67474 * Allow `py:with` directives to define `lambda`s
cmlenz
parents: 118
diff changeset
87 @param nocall: if true, the result of the evaluation is not called if
eb6cead67474 * Allow `py:with` directives to define `lambda`s
cmlenz
parents: 118
diff changeset
88 if it is a callable
81
cc034182061e Template expressions are now compiled to Python bytecode.
cmlenz
parents: 69
diff changeset
89 @return: the result of the evaluation
cc034182061e Template expressions are now compiled to Python bytecode.
cmlenz
parents: 69
diff changeset
90 """
118
226613431921 Add basic support for using `lambda`s in expressions. Closes #21. (Not sure about default arguments, need a test case).
cmlenz
parents: 116
diff changeset
91 retval = eval(self.code, {'data': data,
226613431921 Add basic support for using `lambda`s in expressions. Closes #21. (Not sure about default arguments, need a test case).
cmlenz
parents: 116
diff changeset
92 '_lookup_name': _lookup_name,
226613431921 Add basic support for using `lambda`s in expressions. Closes #21. (Not sure about default arguments, need a test case).
cmlenz
parents: 116
diff changeset
93 '_lookup_attr': _lookup_attr,
226613431921 Add basic support for using `lambda`s in expressions. Closes #21. (Not sure about default arguments, need a test case).
cmlenz
parents: 116
diff changeset
94 '_lookup_item': _lookup_item})
120
eb6cead67474 * Allow `py:with` directives to define `lambda`s
cmlenz
parents: 118
diff changeset
95 if not nocall and callable(retval):
90
242610137d1f When an expression evaluates to a callable, it is called implicitly.
cmlenz
parents: 88
diff changeset
96 retval = retval()
242610137d1f When an expression evaluates to a callable, it is called implicitly.
cmlenz
parents: 88
diff changeset
97 return retval
30
2ee9f28e16e5 Experimental support for using the new native AST in Python 2.5 instead of the `compiler` package.
cmlenz
parents: 27
diff changeset
98
87
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
99
165
4ed68a904235 Fix handling of keyword arguments in `py:def` directive. Thanks to Christian Boos for reporting the problem and providing the basic patch for this change.
cmlenz
parents: 145
diff changeset
100 def _compile(node, source=None, filename=None, lineno=-1):
4ed68a904235 Fix handling of keyword arguments in `py:def` directive. Thanks to Christian Boos for reporting the problem and providing the basic patch for this change.
cmlenz
parents: 145
diff changeset
101 tree = ExpressionASTTransformer().visit(node)
116
88ac4c680120 Merged [135:138/branches/experimental/cspeedups].
cmlenz
parents: 112
diff changeset
102 if isinstance(filename, unicode):
131
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
103 # unicode file names not allowed for code objects
116
88ac4c680120 Merged [135:138/branches/experimental/cspeedups].
cmlenz
parents: 112
diff changeset
104 filename = filename.encode('utf-8', 'replace')
131
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
105 elif not filename:
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
106 filename = '<string>'
132
0288dedce3d2 Name lookup in expressions: try locals first, then the context.
cmlenz
parents: 131
diff changeset
107 tree.filename = filename
131
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
108 if lineno <= 0:
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
109 lineno = 1
87
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
110
116
88ac4c680120 Merged [135:138/branches/experimental/cspeedups].
cmlenz
parents: 112
diff changeset
111 gen = ExpressionCodeGenerator(tree)
131
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
112 gen.optimized = True
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
113 code = gen.getCode()
87
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
114
131
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
115 # We'd like to just set co_firstlineno, but it's readonly. So we need to
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
116 # clone the code object while adjusting the line number
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
117 return new.code(0, code.co_nlocals, code.co_stacksize,
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
118 code.co_flags | 0x0040, code.co_code, code.co_consts,
165
4ed68a904235 Fix handling of keyword arguments in `py:def` directive. Thanks to Christian Boos for reporting the problem and providing the basic patch for this change.
cmlenz
parents: 145
diff changeset
119 code.co_names, code.co_varnames, filename,
167
7888f4104cc0 Handle non-ASCII characters in expressions. Closes #29. Thanks to Arnar Birgisson for reporting the problem and comping up with a patch!
cmlenz
parents: 165
diff changeset
120 '<Expression %s>' % (repr(source).replace("'", '"') or '?'),
7888f4104cc0 Handle non-ASCII characters in expressions. Closes #29. Thanks to Arnar Birgisson for reporting the problem and comping up with a patch!
cmlenz
parents: 165
diff changeset
121 lineno, code.co_lnotab, (), ())
116
88ac4c680120 Merged [135:138/branches/experimental/cspeedups].
cmlenz
parents: 112
diff changeset
122
132
0288dedce3d2 Name lookup in expressions: try locals first, then the context.
cmlenz
parents: 131
diff changeset
123 def _lookup_name(data, name, locals_=None):
0288dedce3d2 Name lookup in expressions: try locals first, then the context.
cmlenz
parents: 131
diff changeset
124 val = None
0288dedce3d2 Name lookup in expressions: try locals first, then the context.
cmlenz
parents: 131
diff changeset
125 if locals_:
0288dedce3d2 Name lookup in expressions: try locals first, then the context.
cmlenz
parents: 131
diff changeset
126 val = locals_.get(name)
0288dedce3d2 Name lookup in expressions: try locals first, then the context.
cmlenz
parents: 131
diff changeset
127 if val is None:
0288dedce3d2 Name lookup in expressions: try locals first, then the context.
cmlenz
parents: 131
diff changeset
128 val = data.get(name)
116
88ac4c680120 Merged [135:138/branches/experimental/cspeedups].
cmlenz
parents: 112
diff changeset
129 if val is None:
88ac4c680120 Merged [135:138/branches/experimental/cspeedups].
cmlenz
parents: 112
diff changeset
130 val = getattr(__builtin__, name, None)
88ac4c680120 Merged [135:138/branches/experimental/cspeedups].
cmlenz
parents: 112
diff changeset
131 return val
88ac4c680120 Merged [135:138/branches/experimental/cspeedups].
cmlenz
parents: 112
diff changeset
132
118
226613431921 Add basic support for using `lambda`s in expressions. Closes #21. (Not sure about default arguments, need a test case).
cmlenz
parents: 116
diff changeset
133 def _lookup_attr(data, obj, key):
116
88ac4c680120 Merged [135:138/branches/experimental/cspeedups].
cmlenz
parents: 112
diff changeset
134 if hasattr(obj, key):
88ac4c680120 Merged [135:138/branches/experimental/cspeedups].
cmlenz
parents: 112
diff changeset
135 return getattr(obj, key)
88ac4c680120 Merged [135:138/branches/experimental/cspeedups].
cmlenz
parents: 112
diff changeset
136 try:
88ac4c680120 Merged [135:138/branches/experimental/cspeedups].
cmlenz
parents: 112
diff changeset
137 return obj[key]
88ac4c680120 Merged [135:138/branches/experimental/cspeedups].
cmlenz
parents: 112
diff changeset
138 except (KeyError, TypeError):
88ac4c680120 Merged [135:138/branches/experimental/cspeedups].
cmlenz
parents: 112
diff changeset
139 return None
88ac4c680120 Merged [135:138/branches/experimental/cspeedups].
cmlenz
parents: 112
diff changeset
140
88ac4c680120 Merged [135:138/branches/experimental/cspeedups].
cmlenz
parents: 112
diff changeset
141 def _lookup_item(data, obj, key):
88ac4c680120 Merged [135:138/branches/experimental/cspeedups].
cmlenz
parents: 112
diff changeset
142 if len(key) == 1:
88ac4c680120 Merged [135:138/branches/experimental/cspeedups].
cmlenz
parents: 112
diff changeset
143 key = key[0]
88ac4c680120 Merged [135:138/branches/experimental/cspeedups].
cmlenz
parents: 112
diff changeset
144 try:
88ac4c680120 Merged [135:138/branches/experimental/cspeedups].
cmlenz
parents: 112
diff changeset
145 return obj[key]
88ac4c680120 Merged [135:138/branches/experimental/cspeedups].
cmlenz
parents: 112
diff changeset
146 except (KeyError, IndexError, TypeError), e:
88ac4c680120 Merged [135:138/branches/experimental/cspeedups].
cmlenz
parents: 112
diff changeset
147 if isinstance(key, basestring):
88ac4c680120 Merged [135:138/branches/experimental/cspeedups].
cmlenz
parents: 112
diff changeset
148 try:
88ac4c680120 Merged [135:138/branches/experimental/cspeedups].
cmlenz
parents: 112
diff changeset
149 return getattr(obj, key)
88ac4c680120 Merged [135:138/branches/experimental/cspeedups].
cmlenz
parents: 112
diff changeset
150 except (AttributeError, TypeError), e:
88ac4c680120 Merged [135:138/branches/experimental/cspeedups].
cmlenz
parents: 112
diff changeset
151 pass
87
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
152
138
d91e1e822969 Add some more assertions to the XPath tests.
cmlenz
parents: 134
diff changeset
153
87
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
154 class ASTTransformer(object):
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
155 """General purpose base class for AST transformations.
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
156
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
157 Every visitor method can be overridden to return an AST node that has been
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
158 altered or replaced in some way.
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
159 """
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
160 _visitors = {}
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
161
88
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
162 def visit(self, node, *args, **kwargs):
87
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
163 v = self._visitors.get(node.__class__)
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
164 if not v:
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
165 v = getattr(self, 'visit%s' % node.__class__.__name__)
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
166 self._visitors[node.__class__] = v
88
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
167 return v(node, *args, **kwargs)
87
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
168
88
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
169 def visitExpression(self, node, *args, **kwargs):
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
170 node.node = self.visit(node.node, *args, **kwargs)
87
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
171 return node
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
172
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
173 # Functions & Accessors
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
174
88
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
175 def visitCallFunc(self, node, *args, **kwargs):
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
176 node.node = self.visit(node.node, *args, **kwargs)
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
177 node.args = map(lambda x: self.visit(x, *args, **kwargs), node.args)
87
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
178 if node.star_args:
88
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
179 node.star_args = map(lambda x: self.visit(x, *args, **kwargs),
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
180 node.star_args)
87
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
181 if node.dstar_args:
88
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
182 node.dstart_args = map(lambda x: self.visit(x, *args, **kwargs),
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
183 node.dstar_args)
87
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
184 return node
30
2ee9f28e16e5 Experimental support for using the new native AST in Python 2.5 instead of the `compiler` package.
cmlenz
parents: 27
diff changeset
185
118
226613431921 Add basic support for using `lambda`s in expressions. Closes #21. (Not sure about default arguments, need a test case).
cmlenz
parents: 116
diff changeset
186 def visitLambda(self, node, *args, **kwargs):
226613431921 Add basic support for using `lambda`s in expressions. Closes #21. (Not sure about default arguments, need a test case).
cmlenz
parents: 116
diff changeset
187 node.code = self.visit(node.code, *args, **kwargs)
226613431921 Add basic support for using `lambda`s in expressions. Closes #21. (Not sure about default arguments, need a test case).
cmlenz
parents: 116
diff changeset
188 node.filename = '<string>' # workaround for bug in pycodegen
226613431921 Add basic support for using `lambda`s in expressions. Closes #21. (Not sure about default arguments, need a test case).
cmlenz
parents: 116
diff changeset
189 return node
226613431921 Add basic support for using `lambda`s in expressions. Closes #21. (Not sure about default arguments, need a test case).
cmlenz
parents: 116
diff changeset
190
88
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
191 def visitGetattr(self, node, *args, **kwargs):
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
192 node.expr = self.visit(node.expr, *args, **kwargs)
87
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
193 return node
30
2ee9f28e16e5 Experimental support for using the new native AST in Python 2.5 instead of the `compiler` package.
cmlenz
parents: 27
diff changeset
194
88
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
195 def visitSubscript(self, node, *args, **kwargs):
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
196 node.expr = self.visit(node.expr, *args, **kwargs)
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
197 node.subs = map(lambda x: self.visit(x, *args, **kwargs), node.subs)
87
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
198 return node
30
2ee9f28e16e5 Experimental support for using the new native AST in Python 2.5 instead of the `compiler` package.
cmlenz
parents: 27
diff changeset
199
87
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
200 # Operators
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
201
88
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
202 def _visitBoolOp(self, node, *args, **kwargs):
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
203 node.nodes = map(lambda x: self.visit(x, *args, **kwargs), node.nodes)
87
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
204 return node
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
205 visitAnd = visitOr = visitBitand = visitBitor = _visitBoolOp
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
206
88
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
207 def _visitBinOp(self, node, *args, **kwargs):
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
208 node.left = self.visit(node.left, *args, **kwargs)
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
209 node.right = self.visit(node.right, *args, **kwargs)
87
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
210 return node
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
211 visitAdd = visitSub = _visitBinOp
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
212 visitDiv = visitFloorDiv = visitMod = visitMul = visitPower = _visitBinOp
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
213 visitLeftShift = visitRightShift = _visitBinOp
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
214
88
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
215 def visitCompare(self, node, *args, **kwargs):
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
216 node.expr = self.visit(node.expr, *args, **kwargs)
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
217 node.ops = map(lambda (op, n): (op, self.visit(n, *args, **kwargs)),
87
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
218 node.ops)
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
219 return node
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
220
88
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
221 def _visitUnaryOp(self, node, *args, **kwargs):
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
222 node.expr = self.visit(node.expr, *args, **kwargs)
87
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
223 return node
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
224 visitUnaryAdd = visitUnarySub = visitNot = visitInvert = _visitUnaryOp
98
bc73d3ab823f Bugfix in `builder` module: attribute values need to be converted to strings when generating streams.
cmlenz
parents: 90
diff changeset
225 visitBackquote = _visitUnaryOp
87
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
226
88
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
227 # Identifiers, Literals and Comprehensions
87
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
228
88
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
229 def _visitDefault(self, node, *args, **kwargs):
87
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
230 return node
88
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
231 visitAssName = visitAssTuple = _visitDefault
102
12efdfe8af47 Ported [118] to trunk
jonas
parents: 101
diff changeset
232 visitConst = visitName = _visitDefault
12efdfe8af47 Ported [118] to trunk
jonas
parents: 101
diff changeset
233
12efdfe8af47 Ported [118] to trunk
jonas
parents: 101
diff changeset
234 def visitKeyword(self, node, *args, **kwargs):
12efdfe8af47 Ported [118] to trunk
jonas
parents: 101
diff changeset
235 node.expr = self.visit(node.expr, *args, **kwargs)
12efdfe8af47 Ported [118] to trunk
jonas
parents: 101
diff changeset
236 return node
87
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
237
88
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
238 def visitDict(self, node, *args, **kwargs):
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
239 node.items = map(lambda (k, v): (self.visit(k, *args, **kwargs),
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
240 self.visit(v, *args, **kwargs)),
87
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
241 node.items)
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
242 return node
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
243
88
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
244 def visitTuple(self, node, *args, **kwargs):
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
245 node.nodes = map(lambda n: self.visit(n, *args, **kwargs), node.nodes)
87
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
246 return node
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
247
88
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
248 def visitList(self, node, *args, **kwargs):
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
249 node.nodes = map(lambda n: self.visit(n, *args, **kwargs), node.nodes)
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
250 return node
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
251
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
252 def visitListComp(self, node, *args, **kwargs):
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
253 node.expr = self.visit(node.expr, *args, **kwargs)
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
254 node.quals = map(lambda x: self.visit(x, *args, **kwargs), node.quals)
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
255 return node
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
256
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
257 def visitListCompFor(self, node, *args, **kwargs):
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
258 node.assign = self.visit(node.assign, *args, **kwargs)
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
259 node.list = self.visit(node.list, *args, **kwargs)
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
260 node.ifs = map(lambda x: self.visit(x, *args, **kwargs), node.ifs)
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
261 return node
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
262
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
263 def visitListCompIf(self, node, *args, **kwargs):
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
264 node.test = self.visit(node.test, *args, **kwargs)
87
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
265 return node
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
266
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
267
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
268 class ExpressionASTTransformer(ASTTransformer):
112
a834a6669681 Docstring typo fix.
cmlenz
parents: 102
diff changeset
269 """Concrete AST transformer that implements the AST transformations needed
a834a6669681 Docstring typo fix.
cmlenz
parents: 102
diff changeset
270 for template expressions.
87
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
271 """
c6f07b7cd3ea Fix some problems in expression evaluation by transforming the AST and compiling that to bytecode, instead of generating bytecode directly. Invalidates #13.
cmlenz
parents: 86
diff changeset
272
131
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
273 def visitGetattr(self, node, locals_=False):
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
274 return ast.CallFunc(ast.Name('_lookup_attr'), [
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
275 ast.Name('data'), self.visit(node.expr, locals_=locals_),
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
276 ast.Const(node.attrname)
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
277 ])
30
2ee9f28e16e5 Experimental support for using the new native AST in Python 2.5 instead of the `compiler` package.
cmlenz
parents: 27
diff changeset
278
131
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
279 def visitLambda(self, node, locals_=False):
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
280 node.code = self.visit(node.code, locals_=True)
118
226613431921 Add basic support for using `lambda`s in expressions. Closes #21. (Not sure about default arguments, need a test case).
cmlenz
parents: 116
diff changeset
281 node.filename = '<string>' # workaround for bug in pycodegen
226613431921 Add basic support for using `lambda`s in expressions. Closes #21. (Not sure about default arguments, need a test case).
cmlenz
parents: 116
diff changeset
282 return node
226613431921 Add basic support for using `lambda`s in expressions. Closes #21. (Not sure about default arguments, need a test case).
cmlenz
parents: 116
diff changeset
283
131
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
284 def visitListComp(self, node, locals_=False):
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
285 node.expr = self.visit(node.expr, locals_=True)
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
286 node.quals = map(lambda x: self.visit(x, locals_=True), node.quals)
88
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
287 return node
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
288
131
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
289 def visitName(self, node, locals_=False):
88
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
290 func_args = [ast.Name('data'), ast.Const(node.name)]
131
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
291 if locals_:
88
9ecae580dd93 Add support for list comprehension in expressions (see #12).
cmlenz
parents: 87
diff changeset
292 func_args.append(ast.CallFunc(ast.Name('locals'), []))
116
88ac4c680120 Merged [135:138/branches/experimental/cspeedups].
cmlenz
parents: 112
diff changeset
293 return ast.CallFunc(ast.Name('_lookup_name'), func_args)
81
cc034182061e Template expressions are now compiled to Python bytecode.
cmlenz
parents: 69
diff changeset
294
131
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
295 def visitSubscript(self, node, locals_=False):
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
296 return ast.CallFunc(ast.Name('_lookup_item'), [
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
297 ast.Name('data'), self.visit(node.expr, locals_=locals_),
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
298 ast.Tuple(map(lambda x: self.visit(x, locals_=locals_), node.subs))
203f459e7e26 * Support for line numbers in exceptions in expression evaluation (#22).
cmlenz
parents: 120
diff changeset
299 ])
Copyright (C) 2012-2017 Edgewall Software