26 lines
671 B
Lua
26 lines
671 B
Lua
local env = bare_environment()
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local g = name_generator("tst")
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local tc = type_checker(env, g)
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assert(is_type_checker(tc))
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local a = Const("a")
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local t = Fun(a, Bool, a)
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local b = Const("b")
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print(t(b))
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assert(tc:whnf(t(b)) == b)
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assert(tc:check(Bool) == mk_sort(mk_level_one()))
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print(tc:infer(t))
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local m = mk_metavar("m1", mk_metavar("m2", mk_sort(mk_meta_univ("u"))))
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print(tc:infer(m))
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local tc2 = type_checker(env, g)
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local t2 = Fun(a, Bool, m(a))
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print("---------")
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print("t2: ")
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print(t2)
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print("check(t): ")
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print(tc2:check(t))
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print("check(t2): ")
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print(tc2:check(t2))
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assert(tc2:next_cnstr())
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assert(tc2:next_cnstr())
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assert(not tc2:next_cnstr())
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