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-rw-r--r--lib/python2.7/compiler/syntax.py46
1 files changed, 0 insertions, 46 deletions
diff --git a/lib/python2.7/compiler/syntax.py b/lib/python2.7/compiler/syntax.py
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--- a/lib/python2.7/compiler/syntax.py
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-"""Check for errs in the AST.
-
-The Python parser does not catch all syntax errors. Others, like
-assignments with invalid targets, are caught in the code generation
-phase.
-
-The compiler package catches some errors in the transformer module.
-But it seems clearer to write checkers that use the AST to detect
-errors.
-"""
-
-from compiler import ast, walk
-
-def check(tree, multi=None):
- v = SyntaxErrorChecker(multi)
- walk(tree, v)
- return v.errors
-
-class SyntaxErrorChecker:
- """A visitor to find syntax errors in the AST."""
-
- def __init__(self, multi=None):
- """Create new visitor object.
-
- If optional argument multi is not None, then print messages
- for each error rather than raising a SyntaxError for the
- first.
- """
- self.multi = multi
- self.errors = 0
-
- def error(self, node, msg):
- self.errors = self.errors + 1
- if self.multi is not None:
- print "%s:%s: %s" % (node.filename, node.lineno, msg)
- else:
- raise SyntaxError, "%s (%s:%s)" % (msg, node.filename, node.lineno)
-
- def visitAssign(self, node):
- # the transformer module handles many of these
- pass
-## for target in node.nodes:
-## if isinstance(target, ast.AssList):
-## if target.lineno is None:
-## target.lineno = node.lineno
-## self.error(target, "can't assign to list comprehension")