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// Copyright 2020 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/sem/struct.h"
#include "src/sem/test_helper.h"
#include "src/sem/texture_type.h"
namespace tint {
namespace sem {
namespace {
using StructTest = TestHelper;
TEST_F(StructTest, Creation) {
auto name = Sym("S");
auto* impl =
create<ast::Struct>(name, ast::StructMemberList{}, ast::DecorationList{});
auto* ptr = impl;
auto* s =
create<sem::Struct>(impl, impl->name, StructMemberList{}, 4 /* align */,
8 /* size */, 16 /* size_no_padding */);
EXPECT_EQ(s->Declaration(), ptr);
EXPECT_EQ(s->Align(), 4u);
EXPECT_EQ(s->Size(), 8u);
EXPECT_EQ(s->SizeNoPadding(), 16u);
}
TEST_F(StructTest, TypeName) {
auto name = Sym("my_struct");
auto* impl =
create<ast::Struct>(name, ast::StructMemberList{}, ast::DecorationList{});
auto* s =
create<sem::Struct>(impl, impl->name, StructMemberList{}, 4 /* align */,
4 /* size */, 4 /* size_no_padding */);
EXPECT_EQ(s->type_name(), "__struct_$1");
}
TEST_F(StructTest, FriendlyName) {
auto name = Sym("my_struct");
auto* impl =
create<ast::Struct>(name, ast::StructMemberList{}, ast::DecorationList{});
auto* s =
create<sem::Struct>(impl, impl->name, StructMemberList{}, 4 /* align */,
4 /* size */, 4 /* size_no_padding */);
EXPECT_EQ(s->FriendlyName(Symbols()), "my_struct");
}
TEST_F(StructTest, Layout) {
auto* inner_st = //
Structure("Inner", {
Member("a", ty.i32()),
Member("b", ty.u32()),
Member("c", ty.f32()),
Member("d", ty.vec3<f32>()),
Member("e", ty.mat4x2<f32>()),
});
auto* outer_st =
Structure("Outer", {
Member("inner", ty.type_name("Inner")),
Member("a", ty.i32()),
});
auto p = Build();
ASSERT_TRUE(p.IsValid()) << p.Diagnostics().str();
auto* sem_inner_st = p.Sem().Get(inner_st);
auto* sem_outer_st = p.Sem().Get(outer_st);
EXPECT_EQ(sem_inner_st->Layout(p.Symbols()),
R"(/* align(16) size(64) */ struct Inner {
/* offset( 0) align( 4) size( 4) */ a : i32;
/* offset( 4) align( 4) size( 4) */ b : u32;
/* offset( 8) align( 4) size( 4) */ c : f32;
/* offset(12) align( 1) size( 4) */ // -- implicit field alignment padding --;
/* offset(16) align(16) size(12) */ d : vec3<f32>;
/* offset(28) align( 1) size( 4) */ // -- implicit field alignment padding --;
/* offset(32) align( 8) size(32) */ e : mat4x2<f32>;
/* */ };)");
EXPECT_EQ(sem_outer_st->Layout(p.Symbols()),
R"(/* align(16) size(80) */ struct Outer {
/* offset( 0) align(16) size(64) */ inner : Inner;
/* offset(64) align( 4) size( 4) */ a : i32;
/* offset(68) align( 1) size(12) */ // -- implicit struct size padding --;
/* */ };)");
}
} // namespace
} // namespace sem
} // namespace tint