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| author | darylm503 <darylm503@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-04-16 22:12:42 +0000 |
|---|---|---|
| committer | darylm503 <darylm503@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-04-16 22:12:42 +0000 |
| commit | 4710c53dcad1ebf3755f3efb9e80ac24bd72a9b2 (patch) | |
| tree | 2d17d2388a78082e32f6a97120d707328143543b /AppPkg/Applications/Python/Python-2.7.2/Lib/compiler/future.py | |
| parent | cbc6b5e54599c7391ece99ad3c5313f4dd4ddda6 (diff) | |
| download | edk2-platforms-4710c53dcad1ebf3755f3efb9e80ac24bd72a9b2.tar.xz | |
AppPkg/Applications/Python: Add Python 2.7.2 sources since the release of Python 2.7.3 made them unavailable from the python.org web site.
These files are a subset of the python-2.7.2.tgz distribution from python.org. Changed files from PyMod-2.7.2 have been copied into the corresponding directories of this tree, replacing the original files in the distribution.
Signed-off-by: daryl.mcdaniel@intel.com
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13197 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'AppPkg/Applications/Python/Python-2.7.2/Lib/compiler/future.py')
| -rw-r--r-- | AppPkg/Applications/Python/Python-2.7.2/Lib/compiler/future.py | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/AppPkg/Applications/Python/Python-2.7.2/Lib/compiler/future.py b/AppPkg/Applications/Python/Python-2.7.2/Lib/compiler/future.py new file mode 100644 index 0000000000..8b70924d4f --- /dev/null +++ b/AppPkg/Applications/Python/Python-2.7.2/Lib/compiler/future.py @@ -0,0 +1,74 @@ +"""Parser for future statements
+
+"""
+
+from compiler import ast, walk
+
+def is_future(stmt):
+ """Return true if statement is a well-formed future statement"""
+ if not isinstance(stmt, ast.From):
+ return 0
+ if stmt.modname == "__future__":
+ return 1
+ else:
+ return 0
+
+class FutureParser:
+
+ features = ("nested_scopes", "generators", "division",
+ "absolute_import", "with_statement", "print_function",
+ "unicode_literals")
+
+ def __init__(self):
+ self.found = {} # set
+
+ def visitModule(self, node):
+ stmt = node.node
+ for s in stmt.nodes:
+ if not self.check_stmt(s):
+ break
+
+ def check_stmt(self, stmt):
+ if is_future(stmt):
+ for name, asname in stmt.names:
+ if name in self.features:
+ self.found[name] = 1
+ else:
+ raise SyntaxError, \
+ "future feature %s is not defined" % name
+ stmt.valid_future = 1
+ return 1
+ return 0
+
+ def get_features(self):
+ """Return list of features enabled by future statements"""
+ return self.found.keys()
+
+class BadFutureParser:
+ """Check for invalid future statements"""
+
+ def visitFrom(self, node):
+ if hasattr(node, 'valid_future'):
+ return
+ if node.modname != "__future__":
+ return
+ raise SyntaxError, "invalid future statement " + repr(node)
+
+def find_futures(node):
+ p1 = FutureParser()
+ p2 = BadFutureParser()
+ walk(node, p1)
+ walk(node, p2)
+ return p1.get_features()
+
+if __name__ == "__main__":
+ import sys
+ from compiler import parseFile, walk
+
+ for file in sys.argv[1:]:
+ print file
+ tree = parseFile(file)
+ v = FutureParser()
+ walk(tree, v)
+ print v.found
+ print
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