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Update generate_reachable_symbols to work with compute fixed point #3

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Update generate_reachable_symbols to work with compute fixed point #3

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e5d2a4b
Update get_reachable_symbols so that compute_fixed_point always uses …
JohnnyUrosevic Oct 16, 2020
4a92167
Add an additional test case to show why this fix was needed
JohnnyUrosevic Oct 16, 2020
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8 changes: 7 additions & 1 deletion OCaml/hw1/python_hint.py
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Original file line number Diff line number Diff line change
Expand Up @@ -127,12 +127,17 @@ def __eq__(self, other):
(symbol('N', 'Num'), [symbol('T', "9")])]

sample_grammar = (symbol('N', 'Expr'), sample_rules[2:])
sample_grammar2 = (symbol('N', 'Lvalue'), sample_rules[2:])


def equal_second_elem_sets(a, b):
return equal_sets(a[1], b[1])

def get_reachable_symbols(params):
# use a helper function so that we can call compute_fixed_point with the full grammar each time
return get_reachable_symbols_helper(params)

def get_reachable_symbols_helper(params):
rules, reachable_symbols = params
if len(rules) == 0:
return (rules, reachable_symbols)
Expand Down Expand Up @@ -167,4 +172,5 @@ def filter_reachable(g):


if __name__ == '__main__':
print(filter_reachable(sample_grammar))
print("Test 1", filter_reachable(sample_grammar))
print("Test 2", filter_reachable(sample_grammar2))