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PEP-0318, @decorator-style. In Guido's words:

Browse source 
"@ seems the syntax that everybody can hate equally"
Implementation by Mark Russell, from SF #979728.
This commit is contained in:
Anthony Baxter 2004-08-02 06:10:11 +00:00
parent fd7dc5169c
commit c2a5a63654
28 changed files with 2965 additions and 2335 deletions
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29
Tools/compiler/astgen.py
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@ -154,19 +154,19 @@ class NodeInfo:
else:
print >> buf, " return %s" % COMMA.join(clist)
else:
print >> buf, " nodes = []"
template = " nodes.%s(%sself.%s%s)"
print >> buf, " nodelist = []"
template = " nodelist.%s(%sself.%s%s)"
for name in self.argnames:
if self.argprops[name] == P_NONE:
tmp = (" if self.%s is not None:"
" nodes.append(self.%s)")
" nodelist.append(self.%s)")
print >> buf, tmp % (name, name)
elif self.argprops[name] == P_NESTED:
print >> buf, template % ("extend", "flatten_nodes(",
name, ")")
elif self.argprops[name] == P_NODE:
print >> buf, template % ("append", "", name, "")
print >> buf, " return tuple(nodes)"
print >> buf, " return tuple(nodelist)"
def _gen_repr(self, buf):
print >> buf, " def __repr__(self):"
@ -208,7 +208,7 @@ def parse_spec(file):
# some extra code for a Node's __init__ method
name = mo.group(1)
cur = classes[name]
return classes.values()
return sorted(classes.values(), key=lambda n: n.name)
def main():
prologue, epilogue = load_boilerplate(sys.argv[-1])
@ -245,9 +245,9 @@ def flatten(list):
def flatten_nodes(list):
return [n for n in flatten(list) if isinstance(n, Node)]
def asList(nodes):
def asList(nodearg):
l = []
for item in nodes:
for item in nodearg:
if hasattr(item, "asList"):
l.append(item.asList())
else:
@ -274,6 +274,21 @@ class Node: # an abstract base class
class EmptyNode(Node):
pass
class Expression(Node):
# Expression is an artificial node class to support "eval"
nodes["expression"] = "Expression"
def __init__(self, node):
self.node = node
def getChildren(self):
return self.node,
def getChildNodes(self):
return self.node,
def __repr__(self):
return "Expression(%s)" % (repr(self.node))
### EPILOGUE
klasses = globals()
for k in nodes.keys():