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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/ast/bitcast_expression.h"
#include "src/ast/struct_block_decoration.h"
#include "src/resolver/resolver.h"
#include "src/resolver/resolver_test_helper.h"
#include "src/sem/reference_type.h"
#include "gmock/gmock.h"
namespace tint {
namespace resolver {
namespace {
struct ResolverPtrRefValidationTest : public resolver::TestHelper,
public testing::Test {};
TEST_F(ResolverPtrRefValidationTest, AddressOfLiteral) {
// &1
auto* expr = AddressOf(Expr(Source{{12, 34}}, 1));
WrapInFunction(expr);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: cannot take the address of expression");
}
TEST_F(ResolverPtrRefValidationTest, AddressOfLet) {
// let l : i32 = 1;
// &l
auto* l = Const("l", ty.i32(), Expr(1));
auto* expr = AddressOf(Expr(Source{{12, 34}}, "l"));
WrapInFunction(l, expr);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: cannot take the address of expression");
}
TEST_F(ResolverPtrRefValidationTest, AddressOfHandle) {
// [[group(0), binding(0)]] var t: texture_3d<f32>;
// &t
Global("t", ty.sampled_texture(ast::TextureDimension::k3d, ty.f32()),
GroupAndBinding(0u, 0u));
auto* expr = AddressOf(Expr(Source{{12, 34}}, "t"));
WrapInFunction(expr);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: cannot take the address of expression in handle "
"storage class");
}
TEST_F(ResolverPtrRefValidationTest, IndirectOfAddressOfHandle) {
// [[group(0), binding(0)]] var t: texture_3d<f32>;
// *&t
Global("t", ty.sampled_texture(ast::TextureDimension::k3d, ty.f32()),
GroupAndBinding(0u, 0u));
auto* expr = Deref(AddressOf(Expr(Source{{12, 34}}, "t")));
WrapInFunction(expr);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: cannot take the address of expression in handle "
"storage class");
}
TEST_F(ResolverPtrRefValidationTest, DerefOfLiteral) {
// *1
auto* expr = Deref(Expr(Source{{12, 34}}, 1));
WrapInFunction(expr);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: cannot dereference expression of type 'i32'");
}
TEST_F(ResolverPtrRefValidationTest, DerefOfVar) {
// var v : i32 = 1;
// *1
auto* v = Var("v", ty.i32());
auto* expr = Deref(Expr(Source{{12, 34}}, "v"));
WrapInFunction(v, expr);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: cannot dereference expression of type 'i32'");
}
TEST_F(ResolverPtrRefValidationTest, InferredPtrAccessMismatch) {
// struct Inner {
// arr: array<i32, 4>;
// }
// [[block]] struct S {
// inner: Inner;
// }
// [[group(0), binding(0)]] var<storage, read_write> s : S;
// fn f() {
// let p : pointer<storage, i32> = &s.inner.arr[2];
// }
auto* inner = Structure("Inner", {Member("arr", ty.array<i32, 4>())});
auto* buf = Structure("S", {Member("inner", ty.Of(inner))},
{create<ast::StructBlockDecoration>()});
auto* storage = Global("s", ty.Of(buf), ast::StorageClass::kStorage,
ast::Access::kReadWrite,
ast::DecorationList{
create<ast::BindingDecoration>(0),
create<ast::GroupDecoration>(0),
});
auto* expr =
IndexAccessor(MemberAccessor(MemberAccessor(storage, "inner"), "arr"), 4);
auto* ptr =
Const(Source{{12, 34}}, "p", ty.pointer<i32>(ast::StorageClass::kStorage),
AddressOf(expr));
WrapInFunction(ptr);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: cannot initialize let of type "
"'ptr<storage, i32>' with value of type "
"'ptr<storage, i32, read_write>'");
}
TEST_F(ResolverTest, Expr_Bitcast_ptr) {
auto* vf = Var("vf", ty.f32());
auto* bitcast = create<ast::BitcastExpression>(
Source{{12, 34}}, ty.pointer<i32>(ast::StorageClass::kFunction),
Expr("vf"));
auto* ip =
Const("ip", ty.pointer<i32>(ast::StorageClass::kFunction), bitcast);
WrapInFunction(Decl(vf), Decl(ip));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: cannot cast to a pointer");
}
} // namespace
} // namespace resolver
} // namespace tint