Leo's pyflakes and pylint commands can be applied to files that depend on
the presently selected node. They first search down c.p's tree, then up
the tree, looking for @<file> nodes. If no nodes are found, and c.p is a
clone, these commands expand the search to the entire tree, looking for an
@<file> node that has c.p in its tree.
g.findRootWithPredicate now formalizes and regularizes this search
process. For example:
def predicate(p):
return p.isAnyAtFileNode() and p.h.strip().endswith('.py')
roots = g.findRootsWithPredicate(c, root, predicate)
I added this helper because the rst3 command was not as clever as the
pylint and pyflakes commands in this regard. Now it is. It would have been
unbearable to repeat the pylint/pyflakes code one more time...
Edward
P.S. Here is g.findRootWithPredicate:
def findRootsWithPredicate(c, root, predicate):
'''
Commands often want to find one or more **roots**, given a position p.
A root is the position of any node matching a predicate.
This function formalizes the search order used by the pylint, pyflakes
and
the rst3 commands, returning a list of zero or more found roots.
'''
roots = set()
# 1. Search p's tree.
for p in root.self_and_subtree():
if predicate(p):
roots.add(p.copy())
if roots:
return list(roots)
# 2. Look up the tree.
for p in root.parents():
if predicate(p):
return [p.copy()]
# 3. Expand the search if root is a clone.
clones = []
for p in root.self_and_parents():
if p.isCloned():
clones.append(p.v)
if clones:
for p in c.all_positions():
if predicate(p):
# Match if any node in p's tree matches any clone.
for p2 in p.self_and_subtree():
if p2.v in clones:
return [p.copy()]
return []
EKR
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