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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/resolver/resolver.h"
#include "gmock/gmock.h"
#include "src/ast/struct_block_decoration.h"
#include "src/resolver/resolver_test_helper.h"
#include "src/sem/storage_texture_type.h"
namespace tint {
namespace resolver {
namespace {
using ResolverAssignmentValidationTest = ResolverTest;
TEST_F(ResolverAssignmentValidationTest, ReadOnlyBuffer) {
// [[block]] struct S { m : i32 };
// [[group(0), binding(0)]]
// var<storage,read> a : S;
auto* s = Structure("S", {Member("m", ty.i32())},
{create<ast::StructBlockDecoration>()});
Global(Source{{12, 34}}, "a", ty.Of(s), ast::StorageClass::kStorage,
ast::Access::kRead,
ast::DecorationList{
create<ast::BindingDecoration>(0),
create<ast::GroupDecoration>(0),
});
WrapInFunction(Assign(Source{{56, 78}}, MemberAccessor("a", "m"), 1));
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 = 2;
// a = 2.3;
// }
auto* var = Var("a", ty.i32(), ast::StorageClass::kNone, Expr(2));
auto* assign = Assign(Source{{12, 34}}, "a", 2.3f);
WrapInFunction(var, assign);
ASSERT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: cannot assign 'f32' to 'i32'");
}
TEST_F(ResolverAssignmentValidationTest,
AssignArraysWithDifferentSizeExpressions_Pass) {
// let len = 4u;
// {
// var a : array<f32, 4>;
// var b : array<f32, len>;
// a = b;
// }
GlobalConst("len", nullptr, Expr(4u));
auto* a = Var("a", ty.array(ty.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) {
// let len = 5u;
// {
// var a : array<f32, 4>;
// var b : array<f32, len>;
// a = b;
// }
GlobalConst("len", nullptr, Expr(5u));
auto* a = Var("a", ty.array(ty.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, len>' to 'array<f32, 4>'");
}
TEST_F(ResolverAssignmentValidationTest,
AssignCompatibleTypesInBlockStatement_Pass) {
// {
// var a : i32 = 2;
// a = 2
// }
auto* var = Var("a", ty.i32(), ast::StorageClass::kNone, Expr(2));
WrapInFunction(var, Assign("a", 2));
ASSERT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverAssignmentValidationTest,
AssignIncompatibleTypesInBlockStatement_Fail) {
// {
// var a : i32 = 2;
// a = 2.3;
// }
auto* var = Var("a", ty.i32(), ast::StorageClass::kNone, Expr(2));
WrapInFunction(var, Assign(Source{{12, 34}}, "a", 2.3f));
ASSERT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: cannot assign 'f32' to 'i32'");
}
TEST_F(ResolverAssignmentValidationTest,
AssignIncompatibleTypesInNestedBlockStatement_Fail) {
// {
// {
// var a : i32 = 2;
// a = 2.3;
// }
// }
auto* var = Var("a", ty.i32(), ast::StorageClass::kNone, Expr(2));
auto* inner_block = Block(Decl(var), Assign(Source{{12, 34}}, "a", 2.3f));
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, AssignToScalar_Fail) {
// var my_var : i32 = 2;
// 1 = my_var;
auto* var = Var("my_var", ty.i32(), ast::StorageClass::kNone, Expr(2));
WrapInFunction(var, Assign(Expr(Source{{12, 34}}, 1), "my_var"));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: cannot assign to value of type 'i32'");
}
TEST_F(ResolverAssignmentValidationTest, AssignCompatibleTypes_Pass) {
// var a : i32 = 2;
// a = 2
auto* var = Var("a", ty.i32(), ast::StorageClass::kNone, Expr(2));
WrapInFunction(var, Assign(Source{{12, 34}}, "a", 2));
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverAssignmentValidationTest,
AssignCompatibleTypesThroughAlias_Pass) {
// alias myint = i32;
// var a : myint = 2;
// a = 2
auto* myint = Alias("myint", ty.i32());
auto* var = Var("a", ty.Of(myint), ast::StorageClass::kNone, Expr(2));
WrapInFunction(var, Assign(Source{{12, 34}}, "a", 2));
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverAssignmentValidationTest,
AssignCompatibleTypesInferRHSLoad_Pass) {
// var a : i32 = 2;
// var b : i32 = 3;
// a = b;
auto* var_a = Var("a", ty.i32(), ast::StorageClass::kNone, Expr(2));
auto* var_b = Var("b", ty.i32(), ast::StorageClass::kNone, Expr(3));
WrapInFunction(var_a, var_b, Assign(Source{{12, 34}}, "a", "b"));
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverAssignmentValidationTest, AssignThroughPointer_Pass) {
// var a : i32;
// let b : ptr<function,i32> = &a;
// *b = 2;
const auto func = ast::StorageClass::kFunction;
auto* var_a = Var("a", ty.i32(), func, Expr(2));
auto* var_b = Const("b", ty.pointer<int>(func), AddressOf(Expr("a")));
WrapInFunction(var_a, var_b, Assign(Source{{12, 34}}, Deref("b"), 2));
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverAssignmentValidationTest, AssignToConstant_Fail) {
// {
// let a : i32 = 2;
// a = 2
// }
auto* var = Const("a", ty.i32(), Expr(2));
WrapInFunction(var, Assign(Expr(Source{{12, 34}}, "a"), 2));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: cannot assign to const\nnote: 'a' is 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(ast::TextureDimension::k1d,
ast::ImageFormat::kRgba8Unorm,
ast::Access::kWrite);
};
Global("a", make_type(), ast::StorageClass::kNone,
ast::DecorationList{
create<ast::BindingDecoration>(0),
create<ast::GroupDecoration>(0),
});
Global("b", make_type(), ast::StorageClass::kNone,
ast::DecorationList{
create<ast::BindingDecoration>(1),
create<ast::GroupDecoration>(0),
});
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) {
// [[block]] struct S { a : atomic<i32>; };
// [[group(0), binding(0)]] var<storage, read_write> v : S;
// v.a = v.a;
auto* s = Structure("S", {Member("a", ty.atomic(ty.i32()))},
{create<ast::StructBlockDecoration>()});
Global(Source{{12, 34}}, "v", ty.Of(s), ast::StorageClass::kStorage,
ast::Access::kReadWrite,
ast::DecorationList{
create<ast::BindingDecoration>(0),
create<ast::GroupDecoration>(0),
});
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) {
// [[block]] struct S { a : array<f32>; };
// [[group(0), binding(0)]] var<storage, read_write> v : S;
// v.a = v.a;
auto* s = Structure("S", {Member("a", ty.array(ty.f32()))},
{create<ast::StructBlockDecoration>()});
Global(Source{{12, 34}}, "v", ty.Of(s), ast::StorageClass::kStorage,
ast::Access::kReadWrite,
ast::DecorationList{
create<ast::BindingDecoration>(0),
create<ast::GroupDecoration>(0),
});
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");
}
} // namespace
} // namespace resolver
} // namespace tint