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feat(library/kernel_bindings): expose is_bi_equal predicate in the Lua API

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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
This commit is contained in:
Leonardo de Moura 2014-05-14 17:24:49 -07:00
parent 606e6226c2
commit 6e78256b87
2 changed files with 9 additions and 2 deletions
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7
src/library/kernel_bindings.cpp
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@ -246,7 +246,8 @@ static int expr_tostring(lua_State * L) {
return push_string(L, out.str().c_str());
}
static int expr_eq(lua_State * L) { return push_boolean(L, to_expr(L, 1) == to_expr(L, 2)); }
static int expr_is_equal(lua_State * L) { return push_boolean(L, to_expr(L, 1) == to_expr(L, 2)); }
static int expr_is_bi_equal(lua_State * L) { return push_boolean(L, is_bi_equal(to_expr(L, 1), to_expr(L, 2))); }
static int expr_lt(lua_State * L) { return push_boolean(L, to_expr(L, 1) < to_expr(L, 2)); }
static int expr_mk_constant(lua_State * L) {
int nargs = lua_gettop(L);
@ -551,7 +552,7 @@ static int expr_tag(lua_State * L) {
static const struct luaL_Reg expr_m[] = {
{"__gc", expr_gc}, // never throws
{"__tostring", safe_function<expr_tostring>},
{"__eq", safe_function<expr_eq>},
{"__eq", safe_function<expr_is_equal>},
{"__lt", safe_function<expr_lt>},
{"__call", safe_function<expr_mk_app>},
{"kind", safe_function<expr_get_kind>},
@ -597,6 +598,8 @@ static const struct luaL_Reg expr_m[] = {
{"occurs", safe_function<expr_occurs>},
{"is_eqp", safe_function<expr_is_eqp>},
{"is_lt", safe_function<expr_is_lt>},
{"is_equal", safe_function<expr_is_equal>},
{"is_bi_equal", safe_function<expr_is_bi_equal>},
{"hash", safe_function<expr_hash>},
{"tag", safe_function<expr_tag>},
{"set_tag", safe_function<expr_set_tag>},

4
tests/lua/tc3.lua
View file

@ -8,7 +8,11 @@ local T1 = mk_pi("A", Type, mk_arrow(Var(0), Var(1)), binder_info(true))
local T2 = mk_pi("A", Type, mk_arrow(Var(0), Var(1)))
print(T1)
print(T2)
assert(T1 == T2) -- The default equality ignores binder information
assert(not (T1:is_bi_equal(T2)))
print(tc:check(t1))
print(tc:check(t2))
assert(tc:check(t1):binder_info():is_implicit())
assert(not tc:check(t2):binder_info():is_implicit())
assert(tc:check(t1):is_bi_equal(T1))
assert(tc:check(t2):is_bi_equal(T2))