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// Copyright 2022 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "src/tint/resolver/resolver.h"
#include "src/tint/resolver/resolver_test_helper.h"
#include "src/tint/sem/index_accessor_expression.h"
#include "src/tint/sem/member_accessor_expression.h"
using namespace tint::number_suffixes; // NOLINT
namespace tint::resolver {
namespace {
class ResolverSourceVariableTest : public ResolverTest {};
TEST_F(ResolverSourceVariableTest, GlobalPrivateVar) {
auto* a = GlobalVar("a", ty.f32(), ast::StorageClass::kPrivate);
auto* expr = Expr(a);
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem_a = Sem().Get(a);
EXPECT_EQ(Sem().Get(expr)->SourceVariable(), sem_a);
}
TEST_F(ResolverSourceVariableTest, GlobalWorkgroupVar) {
auto* a = GlobalVar("a", ty.f32(), ast::StorageClass::kWorkgroup);
auto* expr = Expr(a);
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem_a = Sem().Get(a);
EXPECT_EQ(Sem().Get(expr)->SourceVariable(), sem_a);
}
TEST_F(ResolverSourceVariableTest, GlobalStorageVar) {
auto* a = GlobalVar("a", ty.f32(), ast::StorageClass::kStorage, GroupAndBinding(0, 0));
auto* expr = Expr(a);
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem_a = Sem().Get(a);
EXPECT_EQ(Sem().Get(expr)->SourceVariable(), sem_a);
}
TEST_F(ResolverSourceVariableTest, GlobalUniformVar) {
auto* a = GlobalVar("a", ty.f32(), ast::StorageClass::kUniform, GroupAndBinding(0, 0));
auto* expr = Expr(a);
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem_a = Sem().Get(a);
EXPECT_EQ(Sem().Get(expr)->SourceVariable(), sem_a);
}
TEST_F(ResolverSourceVariableTest, GlobalTextureVar) {
auto* a = GlobalVar("a", ty.sampled_texture(ast::TextureDimension::k2d, ty.f32()),
ast::StorageClass::kNone, GroupAndBinding(0, 0));
auto* expr = Expr(a);
WrapInFunction(Call("textureDimensions", expr));
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem_a = Sem().Get(a);
EXPECT_EQ(Sem().Get(expr)->SourceVariable(), sem_a);
}
TEST_F(ResolverSourceVariableTest, GlobalOverride) {
auto* a = Override("a", ty.f32(), Expr(1_f));
auto* expr = Expr(a);
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem_a = Sem().Get(a);
EXPECT_EQ(Sem().Get(expr)->SourceVariable(), sem_a);
}
TEST_F(ResolverSourceVariableTest, GlobalConst) {
auto* a = GlobalConst("a", ty.f32(), Expr(1_f));
auto* expr = Expr(a);
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem_a = Sem().Get(a);
EXPECT_EQ(Sem().Get(expr)->SourceVariable(), sem_a);
}
// TODO(crbug.com/tint/1580): Remove when module-scope 'let' is removed
TEST_F(ResolverSourceVariableTest, GlobalLet) {
auto* a = GlobalLet("a", ty.f32(), Expr(1_f));
auto* expr = Expr(a);
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem_a = Sem().Get(a);
EXPECT_EQ(Sem().Get(expr)->SourceVariable(), sem_a);
}
TEST_F(ResolverSourceVariableTest, FunctionVar) {
auto* a = Var("a", ty.f32(), ast::StorageClass::kNone);
auto* expr = Expr(a);
WrapInFunction(a, expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem_a = Sem().Get(a);
EXPECT_EQ(Sem().Get(expr)->SourceVariable(), sem_a);
}
TEST_F(ResolverSourceVariableTest, FunctionLet) {
auto* a = Let("a", ty.f32(), Expr(1_f));
auto* expr = Expr(a);
WrapInFunction(a, expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem_a = Sem().Get(a);
EXPECT_EQ(Sem().Get(expr)->SourceVariable(), sem_a);
}
TEST_F(ResolverSourceVariableTest, Parameter) {
auto* a = Param("a", ty.f32());
auto* expr = Expr(a);
Func("foo", {a}, ty.void_(), {WrapInStatement(expr)});
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem_a = Sem().Get(a);
EXPECT_EQ(Sem().Get(expr)->SourceVariable(), sem_a);
}
TEST_F(ResolverSourceVariableTest, PointerParameter) {
// fn foo(a : ptr<function, f32>)
// {
// let b = a;
// }
auto* param = Param("a", ty.pointer(ty.f32(), ast::StorageClass::kFunction));
auto* expr_param = Expr(param);
auto* let = Let("b", nullptr, expr_param);
auto* expr_let = Expr("b");
Func("foo", {param}, ty.void_(), {WrapInStatement(let), WrapInStatement(expr_let)});
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem_param = Sem().Get(param);
EXPECT_EQ(Sem().Get(expr_param)->SourceVariable(), sem_param);
EXPECT_EQ(Sem().Get(expr_let)->SourceVariable(), sem_param);
}
TEST_F(ResolverSourceVariableTest, VarCopyVar) {
// {
// var a : f32;
// var b = a;
// }
auto* a = Var("a", ty.f32(), ast::StorageClass::kNone);
auto* expr_a = Expr(a);
auto* b = Var("b", ty.f32(), ast::StorageClass::kNone, expr_a);
auto* expr_b = Expr(b);
WrapInFunction(a, b, expr_b);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem_a = Sem().Get(a);
auto* sem_b = Sem().Get(b);
EXPECT_EQ(Sem().Get(expr_a)->SourceVariable(), sem_a);
EXPECT_EQ(Sem().Get(expr_b)->SourceVariable(), sem_b);
}
TEST_F(ResolverSourceVariableTest, LetCopyVar) {
// {
// var a : f32;
// let b = a;
// }
auto* a = Var("a", ty.f32(), ast::StorageClass::kNone);
auto* expr_a = Expr(a);
auto* b = Let("b", ty.f32(), expr_a);
auto* expr_b = Expr(b);
WrapInFunction(a, b, expr_b);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem_a = Sem().Get(a);
auto* sem_b = Sem().Get(b);
EXPECT_EQ(Sem().Get(expr_a)->SourceVariable(), sem_a);
EXPECT_EQ(Sem().Get(expr_b)->SourceVariable(), sem_b);
}
TEST_F(ResolverSourceVariableTest, ThroughIndexAccessor) {
// var<private> a : array<f32, 4u>;
// {
// a[2i]
// }
auto* a = GlobalVar("a", ty.array(ty.f32(), 4_u), ast::StorageClass::kPrivate);
auto* expr = IndexAccessor(a, 2_i);
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem_a = Sem().Get(a);
EXPECT_EQ(Sem().Get(expr)->SourceVariable(), sem_a);
}
TEST_F(ResolverSourceVariableTest, ThroughMemberAccessor) {
// struct S { f : f32 }
// var<private> a : S;
// {
// a.f
// }
auto* S = Structure("S", {Member("f", ty.f32())});
auto* a = GlobalVar("a", ty.Of(S), ast::StorageClass::kPrivate);
auto* expr = MemberAccessor(a, "f");
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem_a = Sem().Get(a);
EXPECT_EQ(Sem().Get(expr)->SourceVariable(), sem_a);
}
TEST_F(ResolverSourceVariableTest, ThroughPointers) {
// var<private> a : f32;
// {
// let a_ptr1 = &*&a;
// let a_ptr2 = &*a_ptr1;
// }
auto* a = GlobalVar("a", ty.f32(), ast::StorageClass::kPrivate);
auto* address_of_1 = AddressOf(a);
auto* deref_1 = Deref(address_of_1);
auto* address_of_2 = AddressOf(deref_1);
auto* a_ptr1 = Let("a_ptr1", nullptr, address_of_2);
auto* deref_2 = Deref(a_ptr1);
auto* address_of_3 = AddressOf(deref_2);
auto* a_ptr2 = Let("a_ptr2", nullptr, address_of_3);
WrapInFunction(a_ptr1, a_ptr2);
EXPECT_TRUE(r()->Resolve()) << r()->error();
auto* sem_a = Sem().Get(a);
EXPECT_EQ(Sem().Get(address_of_1)->SourceVariable(), sem_a);
EXPECT_EQ(Sem().Get(address_of_2)->SourceVariable(), sem_a);
EXPECT_EQ(Sem().Get(address_of_3)->SourceVariable(), sem_a);
EXPECT_EQ(Sem().Get(deref_1)->SourceVariable(), sem_a);
EXPECT_EQ(Sem().Get(deref_2)->SourceVariable(), sem_a);
}
TEST_F(ResolverSourceVariableTest, Literal) {
auto* expr = Expr(1_f);
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
EXPECT_EQ(Sem().Get(expr)->SourceVariable(), nullptr);
}
TEST_F(ResolverSourceVariableTest, FunctionReturnValue) {
auto* expr = Call("min", 1_f, 2_f);
WrapInFunction(expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
EXPECT_EQ(Sem().Get(expr)->SourceVariable(), nullptr);
}
TEST_F(ResolverSourceVariableTest, BinaryExpression) {
auto* a = Var("a", ty.f32(), ast::StorageClass::kNone);
auto* expr = Add(a, Expr(1_f));
WrapInFunction(a, expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
EXPECT_EQ(Sem().Get(expr)->SourceVariable(), nullptr);
}
TEST_F(ResolverSourceVariableTest, UnaryExpression) {
auto* a = Var("a", ty.f32(), ast::StorageClass::kNone);
auto* expr = create<ast::UnaryOpExpression>(ast::UnaryOp::kNegation, Expr(a));
WrapInFunction(a, expr);
EXPECT_TRUE(r()->Resolve()) << r()->error();
EXPECT_EQ(Sem().Get(expr)->SourceVariable(), nullptr);
}
} // namespace
} // namespace tint::resolver