lean4-htt/tests/lean/elab_meta2.lean
Leonardo de Moura 6e57e70d04 fix(frontends/lean/pp): pretty print issue, and fix broken tests output
Remark: we do not allow user to access abstracted version anymore inside
of a section.
2016-12-15 15:42:54 -08:00

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Text

print "parametric meta definition"
meta definition f {A : Type} : nat → A → A → A
| n a b := if n / 2 = 0 then a else f (n / 2) b a
vm_eval
if f 10 1 2 = 2 then "OK" else "FAILED"
namespace foo
print "parametric meta definition inside namespace"
meta definition bla {A : Type} : nat → A → A → A
| n a b := if n / 2 = 0 then a else bla (n / 2) b a
vm_eval
if foo.bla 10 1 2 = 2 then "OK" else "FAILED"
end foo
namespace foo
section
print "meta definition inside parametric scope"
parameter {A : Type}
meta definition bah : nat → A → A → A
| n a b := if n / 2 = 0 then a else bah (n / 2) b a
end
vm_eval if foo.bah 10 1 2 = 2 then "OK" else "FAILED"
end foo
print "private meta definition"
private meta definition hprv {A : Type} : nat → A → A → A
| n a b := if n / 2 = 0 then a else hprv (n / 2) b a
vm_eval
if hprv 10 1 2 = 2 then "OK" else "FAILED"