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// Copyright 2021 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 "gmock/gmock.h"
#include "src/tint/resolver/resolver_test_helper.h"
#include "src/tint/type/storage_texture.h"
#include "src/tint/type/texture_dimension.h"
using namespace tint::number_suffixes; // NOLINT
namespace tint::resolver {
namespace {
using ResolverAssignmentValidationTest = ResolverTest;
TEST_F(ResolverAssignmentValidationTest, ReadOnlyBuffer) {
// struct S { m : i32 };
// @group(0) @binding(0)
// var<storage,read> a : S;
auto* s = Structure("S", utils::Vector{
Member("m", ty.i32()),
});
GlobalVar(Source{{12, 34}}, "a", ty.Of(s), builtin::AddressSpace::kStorage,
builtin::Access::kRead, Binding(0_a), Group(0_a));
WrapInFunction(Assign(Source{{56, 78}}, MemberAccessor("a", "m"), 1_i));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"56:78 error: cannot store into a read-only type 'ref<storage, "
"i32, read>'");
}
TEST_F(ResolverAssignmentValidationTest, AssignIncompatibleTypes) {
// {
// var a : i32 = 2i;
// a = 2.3;
// }
auto* var = Var("a", ty.i32(), Expr(2_i));
auto* assign = Assign(Source{{12, 34}}, "a", 2.3_f);
WrapInFunction(var, assign);
ASSERT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: cannot assign 'f32' to 'i32'");
}
TEST_F(ResolverAssignmentValidationTest, AssignArraysWithDifferentSizeExpressions_Pass) {
// const len = 4u;
// {
// var a : array<f32, 4u>;
// var b : array<f32, len>;
// a = b;
// }
GlobalConst("len", Expr(4_u));
auto* a = Var("a", ty.array<f32, 4>());
auto* b = Var("b", ty.array(ty.f32(), "len"));
auto* assign = Assign(Source{{12, 34}}, "a", "b");
WrapInFunction(a, b, assign);
ASSERT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverAssignmentValidationTest, AssignArraysWithDifferentSizeExpressions_Fail) {
// const len = 5u;
// {
// var a : array<f32, 4u>;
// var b : array<f32, len>;
// a = b;
// }
GlobalConst("len", Expr(5_u));
auto* a = Var("a", ty.array<f32, 4>());
auto* b = Var("b", ty.array(ty.f32(), "len"));
auto* assign = Assign(Source{{12, 34}}, "a", "b");
WrapInFunction(a, b, assign);
ASSERT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: cannot assign 'array<f32, 5>' to 'array<f32, 4>'");
}
TEST_F(ResolverAssignmentValidationTest, AssignCompatibleTypesInBlockStatement_Pass) {
// {
// var a : i32 = 2i;
// a = 2i
// }
auto* var = Var("a", ty.i32(), Expr(2_i));
WrapInFunction(var, Assign("a", 2_i));
ASSERT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverAssignmentValidationTest, AssignIncompatibleTypesInBlockStatement_Fail) {
// {
// var a : i32 = 2i;
// a = 2.3;
// }
auto* var = Var("a", ty.i32(), Expr(2_i));
WrapInFunction(var, Assign(Source{{12, 34}}, "a", 2.3_f));
ASSERT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: cannot assign 'f32' to 'i32'");
}
TEST_F(ResolverAssignmentValidationTest, AssignIncompatibleTypesInNestedBlockStatement_Fail) {
// {
// {
// var a : i32 = 2i;
// a = 2.3;
// }
// }
auto* var = Var("a", ty.i32(), Expr(2_i));
auto* inner_block = Block(Decl(var), Assign(Source{{12, 34}}, "a", 2.3_f));
auto* outer_block = Block(inner_block);
WrapInFunction(outer_block);
ASSERT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: cannot assign 'f32' to 'i32'");
}
TEST_F(ResolverAssignmentValidationTest, AssignCompatibleTypes_Pass) {
// var a : i32 = 1i;
// a = 2i;
// a = 3;
WrapInFunction(Var("a", ty.i32(), Expr(1_i)), //
Assign("a", 2_i), //
Assign("a", 3_a));
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverAssignmentValidationTest, AssignCompatibleTypesThroughAlias_Pass) {
// alias myint = u32;
// var a : myint = 1u;
// a = 2u;
// a = 3;
auto* myint = Alias("myint", ty.u32());
WrapInFunction(Var("a", ty.Of(myint), Expr(1_u)), //
Assign("a", 2_u), //
Assign("a", 3_a));
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverAssignmentValidationTest, AssignCompatibleTypesInferRHSLoad_Pass) {
// var a : i32 = 2i;
// var b : i32 = 3i;
// a = b;
WrapInFunction(Var("a", ty.i32(), Expr(2_i)), //
Var("b", ty.i32(), Expr(3_i)), //
Assign("a", "b"));
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverAssignmentValidationTest, AssignThroughPointer_Pass) {
// var a : i32;
// let b : ptr<function,i32> = &a;
// *b = 2i;
const auto func = builtin::AddressSpace::kFunction;
WrapInFunction(Var("a", ty.i32(), func, Expr(2_i)), //
Let("b", ty.pointer<i32>(func), AddressOf(Expr("a"))), //
Assign(Deref("b"), 2_i));
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverAssignmentValidationTest, AssignMaterializedThroughPointer_Pass) {
// var a : i32;
// let b : ptr<function,i32> = &a;
// *b = 2;
const auto func = builtin::AddressSpace::kFunction;
auto* var_a = Var("a", ty.i32(), func, Expr(2_i));
auto* var_b = Let("b", ty.pointer<i32>(func), AddressOf(Expr("a")));
WrapInFunction(var_a, var_b, Assign(Deref("b"), 2_a));
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverAssignmentValidationTest, AssignToScalar_Fail) {
// var my_var : i32 = 2i;
// 1 = my_var;
WrapInFunction(Var("my_var", ty.i32(), Expr(2_i)), //
Assign(Expr(Source{{12, 34}}, 1_i), "my_var"));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:34 error: cannot assign to value expression of type 'i32')");
}
TEST_F(ResolverAssignmentValidationTest, AssignToOverride_Fail) {
// override a : i32 = 2i;
// {
// a = 2i
// }
Override(Source{{56, 78}}, "a", ty.i32(), Expr(2_i));
WrapInFunction(Assign(Expr(Source{{12, 34}}, "a"), 2_i));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:34 error: cannot assign to override 'a'
12:34 note: 'override' variables are immutable
56:78 note: override 'a' declared here)");
}
TEST_F(ResolverAssignmentValidationTest, AssignToLet_Fail) {
// {
// let a : i32 = 2i;
// a = 2i
// }
WrapInFunction(Let(Source{{56, 78}}, "a", ty.i32(), Expr(2_i)), //
Assign(Expr(Source{{12, 34}}, "a"), 2_i));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:34 error: cannot assign to let 'a'
12:34 note: 'let' variables are immutable
56:78 note: let 'a' declared here)");
}
TEST_F(ResolverAssignmentValidationTest, AssignToConst_Fail) {
// {
// const a : i32 = 2i;
// a = 2i
// }
WrapInFunction(Const(Source{{56, 78}}, "a", ty.i32(), Expr(2_i)), //
Assign(Expr(Source{{12, 34}}, "a"), 2_i));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:34 error: cannot assign to const 'a'
12:34 note: 'const' variables are immutable
56:78 note: const 'a' declared here)");
}
TEST_F(ResolverAssignmentValidationTest, AssignToParam_Fail) {
Func("foo", utils::Vector{Param(Source{{56, 78}}, "arg", ty.i32())}, ty.void_(),
utils::Vector{
Assign(Expr(Source{{12, 34}}, "arg"), Expr(1_i)),
Return(),
});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
R"(12:34 error: cannot assign to parameter 'arg'
12:34 note: parameters are immutable
56:78 note: parameter 'arg' declared here)");
}
TEST_F(ResolverAssignmentValidationTest, AssignToLetMember_Fail) {
// struct S { i : i32 }
// {
// let a : S;
// a.i = 2i
// }
Structure("S", utils::Vector{Member("i", ty.i32())});
WrapInFunction(Let(Source{{98, 76}}, "a", ty("S"), Call("S")), //
Assign(MemberAccessor(Source{{12, 34}}, Expr(Source{{56, 78}}, "a"), "i"), 2_i));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:34 error: cannot assign to value expression of type 'i32'
56:78 note: 'let' variables are immutable
98:76 note: let 'a' declared here)");
}
TEST_F(ResolverAssignmentValidationTest, AssignNonConstructible_Handle) {
// var a : texture_storage_1d<rgba8unorm, write>;
// var b : texture_storage_1d<rgba8unorm, write>;
// a = b;
auto make_type = [&] {
return ty.storage_texture(type::TextureDimension::k1d, builtin::TexelFormat::kRgba8Unorm,
builtin::Access::kWrite);
};
GlobalVar("a", make_type(), Binding(0_a), Group(0_a));
GlobalVar("b", make_type(), Binding(1_a), Group(0_a));
WrapInFunction(Assign(Source{{56, 78}}, "a", "b"));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "56:78 error: storage type of assignment must be constructible");
}
TEST_F(ResolverAssignmentValidationTest, AssignNonConstructible_Atomic) {
// struct S { a : atomic<i32>; };
// @group(0) @binding(0) var<storage, read_write> v : S;
// v.a = v.a;
auto* s = Structure("S", utils::Vector{
Member("a", ty.atomic(ty.i32())),
});
GlobalVar(Source{{12, 34}}, "v", ty.Of(s), builtin::AddressSpace::kStorage,
builtin::Access::kReadWrite, Binding(0_a), Group(0_a));
WrapInFunction(Assign(Source{{56, 78}}, MemberAccessor("v", "a"), MemberAccessor("v", "a")));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "56:78 error: storage type of assignment must be constructible");
}
TEST_F(ResolverAssignmentValidationTest, AssignNonConstructible_RuntimeArray) {
// struct S { a : array<f32>; };
// @group(0) @binding(0) var<storage, read_write> v : S;
// v.a = v.a;
auto* s = Structure("S", utils::Vector{
Member("a", ty.array(ty.f32())),
});
GlobalVar(Source{{12, 34}}, "v", ty.Of(s), builtin::AddressSpace::kStorage,
builtin::Access::kReadWrite, Binding(0_a), Group(0_a));
WrapInFunction(Assign(Source{{56, 78}}, MemberAccessor("v", "a"), MemberAccessor("v", "a")));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "56:78 error: storage type of assignment must be constructible");
}
TEST_F(ResolverAssignmentValidationTest, AssignToPhony_NonConstructibleStruct_Fail) {
// struct S {
// arr: array<i32>;
// };
// @group(0) @binding(0) var<storage, read_write> s : S;
// fn f() {
// _ = s;
// }
auto* s = Structure("S", utils::Vector{
Member("arr", ty.array<i32>()),
});
GlobalVar("s", ty.Of(s), builtin::AddressSpace::kStorage, Group(0_a), Binding(0_a));
WrapInFunction(Assign(Phony(), Expr(Source{{12, 34}}, "s")));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: cannot assign 'S' to '_'. "
"'_' can only be assigned a constructible, pointer, texture or "
"sampler type");
}
TEST_F(ResolverAssignmentValidationTest, AssignToPhony_DynamicArray_Fail) {
// struct S {
// arr: array<i32>;
// };
// @group(0) @binding(0) var<storage, read_write> s : S;
// fn f() {
// _ = s.arr;
// }
auto* s = Structure("S", utils::Vector{
Member("arr", ty.array<i32>()),
});
GlobalVar("s", ty.Of(s), builtin::AddressSpace::kStorage, Group(0_a), Binding(0_a));
WrapInFunction(Assign(Phony(), MemberAccessor(Source{{12, 34}}, "s", "arr")));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: cannot assign 'array<i32>' to '_'. "
"'_' can only be assigned a constructible, pointer, texture or sampler "
"type");
}
TEST_F(ResolverAssignmentValidationTest, AssignToPhony_Pass) {
// struct S {
// i: i32;
// arr: array<i32>;
// };
// struct U {
// i: i32;
// };
// @group(0) @binding(0) var tex texture_2d;
// @group(0) @binding(1) var smp sampler;
// @group(0) @binding(2) var<uniform> u : U;
// @group(0) @binding(3) var<storage, read_write> s : S;
// var<workgroup> wg : array<f32, 10>
// fn f() {
// _ = 1i;
// _ = 2u;
// _ = 3.0f;
// _ = 4;
// _ = 5.0;
// _ = vec2(6);
// _ = vec3(7.0);
// _ = vec4<bool>();
// _ = tex;
// _ = smp;
// _ = &s;
// _ = s.i;
// _ = &s.arr;
// _ = u;
// _ = u.i;
// _ = wg;
// _ = wg[3i];
// }
auto* S = Structure("S", utils::Vector{
Member("i", ty.i32()),
Member("arr", ty.array<i32>()),
});
auto* U = Structure("U", utils::Vector{
Member("i", ty.i32()),
});
GlobalVar("tex", ty.sampled_texture(type::TextureDimension::k2d, ty.f32()), Group(0_a),
Binding(0_a));
GlobalVar("smp", ty.sampler(type::SamplerKind::kSampler), Group(0_a), Binding(1_a));
GlobalVar("u", ty.Of(U), builtin::AddressSpace::kUniform, Group(0_a), Binding(2_a));
GlobalVar("s", ty.Of(S), builtin::AddressSpace::kStorage, Group(0_a), Binding(3_a));
GlobalVar("wg", ty.array<f32, 10>(), builtin::AddressSpace::kWorkgroup);
WrapInFunction(Assign(Phony(), 1_i), //
Assign(Phony(), 2_u), //
Assign(Phony(), 3_f), //
Assign(Phony(), 4_a), //
Assign(Phony(), 5.0_a), //
Assign(Phony(), vec2<Infer>(6_a)), //
Assign(Phony(), vec3<Infer>(7.0_a)), //
Assign(Phony(), vec4<bool>()), //
Assign(Phony(), "tex"), //
Assign(Phony(), "smp"), //
Assign(Phony(), AddressOf("s")), //
Assign(Phony(), MemberAccessor("s", "i")), //
Assign(Phony(), AddressOf(MemberAccessor("s", "arr"))), //
Assign(Phony(), "u"), //
Assign(Phony(), MemberAccessor("u", "i")), //
Assign(Phony(), "wg"), //
Assign(Phony(), IndexAccessor("wg", 3_i)));
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
} // namespace
} // namespace tint::resolver