langkit/testsuite/tests/python_api/entity_eq/main.py

import sys

import libfoolang


ctx = libfoolang.AnalysisContext()
u = ctx.get_from_buffer(
    "main.txt",
    b"""
(T) foo { a b }

(T U) old_bar { c d }
(T U) new_bar { e f }

(V) old_baz { g }
(V) new_baz { h }
""",
)
if u.diagnostics:
    for d in u.diagnostics:
        print(d)
    sys.exit(1)

foo, old_bar, new_bar, old_baz, new_baz = u.root
rebound1 = foo.p_rebind(old_bar, new_bar)
rebound2 = foo.p_rebind(old_bar, new_bar)
rebound3 = foo.p_rebind(old_baz, new_baz)

for e1, e2 in [
    (rebound1, rebound1),
    (rebound1, rebound2),
    (rebound1, rebound3),
]:
    print("{} vs. {}".format(e1, e2))
    print("  identity check:   {}".format(e1 is e2))
    print("  equality check:   {}".format(e1 == e2))
    print("  inequality check: {}".format(e1 != e2))

print("main.py: Done.")