luau/tests/EqSat.language.test.cpp
Hunter Goldstein a36a3c41cc
Sync to upstream/release/651 (#1513)
### What's New?

* Fragment Autocomplete: a new API allows for type checking a small
fragment of code against an existing file, significantly speeding up
autocomplete performance in large files.

### New Solver

* E-Graphs have landed: this is an ongoing approach to make the new type
solver simplify types in a more consistent and principled manner, based
on similar work (see: https://egraphs-good.github.io/).
* Adds support for exporting / local user type functions (previously
they were always exported).
* Fixes a set of bugs in which the new solver will fail to complete
inference for simple expressions with just literals and operators.

### General Updates
* Requiring a path with a ".lua" or ".luau" extension will now have a
bespoke error suggesting to remove said extension.
* Fixes a bug in which whether two `Luau::Symbol`s are equal depends on
whether the new solver is enabled.

---

Internal Contributors:

Co-authored-by: Aaron Weiss <aaronweiss@roblox.com>
Co-authored-by: Andy Friesen <afriesen@roblox.com>
Co-authored-by: David Cope <dcope@roblox.com>
Co-authored-by: Hunter Goldstein <hgoldstein@roblox.com>
Co-authored-by: Varun Saini <vsaini@roblox.com>
Co-authored-by: Vighnesh Vijay <vvijay@roblox.com>
Co-authored-by: Vyacheslav Egorov <vegorov@roblox.com>
2024-11-08 13:41:45 -08:00

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2.8 KiB
C++

// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
#include <doctest.h>
#include "Luau/Id.h"
#include "Luau/Language.h"
#include <string>
#include <unordered_map>
LUAU_EQSAT_ATOM(I32, int);
LUAU_EQSAT_ATOM(Bool, bool);
LUAU_EQSAT_ATOM(Str, std::string);
LUAU_EQSAT_NODE_ARRAY(Add, 2);
using namespace Luau;
using Value = EqSat::Language<I32, Bool, Str, Add>;
TEST_SUITE_BEGIN("EqSatLanguage");
TEST_CASE("atom_equality")
{
CHECK(I32{0} == I32{0});
CHECK(I32{0} != I32{1});
}
TEST_CASE("node_equality")
{
CHECK(Add{EqSat::Id{0}, EqSat::Id{0}} == Add{EqSat::Id{0}, EqSat::Id{0}});
CHECK(Add{EqSat::Id{1}, EqSat::Id{0}} != Add{EqSat::Id{0}, EqSat::Id{0}});
}
TEST_CASE("language_get")
{
Value v{I32{5}};
auto i = v.get<I32>();
REQUIRE(i);
CHECK(i->value());
CHECK(!v.get<Bool>());
}
TEST_CASE("language_copy_ctor")
{
Value v1{I32{5}};
Value v2 = v1;
auto i1 = v1.get<I32>();
auto i2 = v2.get<I32>();
REQUIRE(i1);
REQUIRE(i2);
CHECK(i1->value() == i2->value());
}
TEST_CASE("language_move_ctor")
{
Value v1{Str{"hello"}};
{
auto s1 = v1.get<Str>();
REQUIRE(s1);
CHECK(s1->value() == "hello");
}
Value v2 = std::move(v1);
auto s1 = v1.get<Str>();
REQUIRE(s1);
CHECK(s1->value() == ""); // this also tests the dtor.
auto s2 = v2.get<Str>();
REQUIRE(s2);
CHECK(s2->value() == "hello");
}
TEST_CASE("language_equality")
{
Value v1{I32{0}};
Value v2{I32{0}};
Value v3{I32{1}};
Value v4{Bool{true}};
Value v5{Add{EqSat::Id{0}, EqSat::Id{1}}};
CHECK(v1 == v2);
CHECK(v2 != v3);
CHECK(v3 != v4);
CHECK(v4 != v5);
}
TEST_CASE("language_is_mappable")
{
std::unordered_map<Value, int, Value::Hash> map;
Value v1{I32{5}};
Value v2{I32{5}};
Value v3{Bool{true}};
Value v4{Add{EqSat::Id{0}, EqSat::Id{1}}};
map[v1] = 1;
map[v2] = 2;
map[v3] = 42;
map[v4] = 37;
CHECK(map[v1] == 2);
CHECK(map[v2] == 2);
CHECK(map[v3] == 42);
CHECK(map[v4] == 37);
}
TEST_CASE("node_field")
{
EqSat::Id left{0};
EqSat::Id right{1};
Add add{left, right};
EqSat::Id left2 = add.operands()[0];
EqSat::Id right2 = add.operands()[1];
CHECK(left == left2);
CHECK(left != right2);
CHECK(right == right2);
CHECK(right != left2);
}
TEST_CASE("language_operands")
{
Value v1{I32{0}};
CHECK(v1.operands().empty());
Value v2{Add{EqSat::Id{0}, EqSat::Id{1}}};
const Add* add = v2.get<Add>();
REQUIRE(add);
EqSat::Slice<const EqSat::Id> actual = v2.operands();
CHECK(actual.size() == 2);
CHECK(actual[0] == add->operands()[0]);
CHECK(actual[1] == add->operands()[1]);
}
TEST_SUITE_END();