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Successfully break cycle.

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This commit is contained in:
Chris Pressey 2018-04-04 14:01:17 +01:00
parent 50433ac860
commit 448849ac4b
3 changed files with 21 additions and 19 deletions
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26
bin/sixtypical
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@ -66,32 +66,32 @@ def process_input_files(filenames, options):
fa.analyze_program(program)
if options.dump_fallthru_info:
fallthru_map = dict(fa.fallthru_map)
sys.stdout.write(json.dumps(fallthru_map, indent=4, sort_keys=True))
sys.stdout.write("\n")
fa.find_ancestors()
if options.debug and options.dump_fallthru_info:
sys.stdout.write("*** ancestors:\n")
sys.stdout.write(json.dumps(fa.ancestor_map, indent=4, sort_keys=True))
sys.stdout.write(json.dumps(fa.fallthru_map, indent=4, sort_keys=True))
sys.stdout.write("\n")
fa.find_cycles()
if fa.cycles_found:
while fa.cycles_found:
if options.dump_fallthru_info:
if options.debug:
sys.stdout.write("*** ancestors:\n")
sys.stdout.write(json.dumps(fa.ancestor_map, indent=4, sort_keys=True))
sys.stdout.write("\n")
sys.stdout.write("*** cycles found:\n")
sys.stdout.write(json.dumps(sorted(fa.cycles_found), indent=4, sort_keys=True))
sys.stdout.write("\n")
fa.break_cycles()
fa.break_cycle()
if options.dump_fallthru_info and fallthru_map != fa.fallthru_map:
sys.stdout.write("*** after breaking cycles:\n")
if options.dump_fallthru_info:
sys.stdout.write("*** after breaking cycle:\n")
sys.stdout.write(json.dumps(fa.fallthru_map, indent=4, sort_keys=True))
sys.stdout.write("\n")
fa.find_cycles()
if options.analyze_only:
return

12
src/sixtypical/fallthru.py
View File

@ -24,25 +24,27 @@ class FallthruAnalyzer(object):
self.fallthru_map = dict([(k, sorted(v)) for k, v in fallthru_map.iteritems()])
return self.fallthru_map
def find_ancestors(self):
def find_cycles(self):
self.ancestor_map = {}
for key in self.fallthru_map:
ancestors = set()
make_transitive_closure(self.fallthru_map, key, ancestors)
self.ancestor_map[key] = sorted(ancestors)
return self.ancestor_map
def find_cycles(self):
self.cycles_found = set()
for key in self.ancestor_map:
if key in self.ancestor_map[key]:
self.cycles_found.add(key)
return self.cycles_found
def break_cycles(self):
def break_cycle(self):
cycle_to_break = sorted(self.cycles_found)[0]
cycles_to_break = set([cycle_to_break])
new_fallthru_map = {}
for key in self.fallthru_map:
values = set(self.fallthru_map[key]) - self.cycles_found
values = set(self.fallthru_map[key]) - cycles_to_break
if values:
new_fallthru_map[key] = sorted(values)
self.fallthru_map = new_fallthru_map

2
tests/SixtyPical Fallthru.md
View File

@ -139,7 +139,7 @@ fall through to the other.
= "bar",
= "foo"
= ]
= *** after breaking cycles:
= *** after breaking cycle:
= {
= "bar": [
= "foo"