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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 "src/tint/resolver/resolver_test_helper.h"
#include "gmock/gmock.h"
using namespace tint::number_suffixes; // NOLINT
namespace tint::resolver {
namespace {
struct ResolverVariableValidationTest : public resolver::TestHelper, public testing::Test {};
TEST_F(ResolverVariableValidationTest, VarNoInitializerNoType) {
// var a;
WrapInFunction(Var(Source{{12, 34}}, "a", nullptr));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: 'var' declaration requires a type or initializer");
}
TEST_F(ResolverVariableValidationTest, GlobalVarNoInitializerNoType) {
// var a;
GlobalVar(Source{{12, 34}}, "a", nullptr);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: 'var' declaration requires a type or initializer");
}
TEST_F(ResolverVariableValidationTest, OverrideNoInitializerNoType) {
// override a;
Override(Source{{12, 34}}, "a", nullptr, nullptr);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: 'override' declaration requires a type or initializer");
}
TEST_F(ResolverVariableValidationTest, VarTypeNotStorable) {
// var i : i32;
// var p : pointer<function, i32> = &v;
auto* i = Var("i", ty.i32(), ast::StorageClass::kNone);
auto* p = Var(Source{{56, 78}}, "a", ty.pointer<i32>(ast::StorageClass::kFunction),
ast::StorageClass::kNone, AddressOf(Source{{12, 34}}, "i"));
WrapInFunction(i, p);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"56:78 error: ptr<function, i32, read_write> cannot be used as the "
"type of a var");
}
TEST_F(ResolverVariableValidationTest, LetTypeNotConstructible) {
// @group(0) @binding(0) var t1 : texture_2d<f32>;
// let t2 : t1;
auto* t1 = GlobalVar("t1", ty.sampled_texture(ast::TextureDimension::k2d, ty.f32()),
GroupAndBinding(0, 0));
auto* t2 = Let(Source{{56, 78}}, "t2", nullptr, Expr(t1));
WrapInFunction(t2);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "56:78 error: texture_2d<f32> cannot be used as the type of a 'let'");
}
TEST_F(ResolverVariableValidationTest, OverrideExplicitTypeNotScalar) {
// override o : vec3<f32>;
Override(Source{{56, 78}}, "o", ty.vec3<f32>(), nullptr);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "56:78 error: vec3<f32> cannot be used as the type of a 'override'");
}
TEST_F(ResolverVariableValidationTest, OverrideInferedTypeNotScalar) {
// override o = vec3(1.0f);
Override(Source{{56, 78}}, "o", nullptr, vec3<f32>(1.0_f));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "56:78 error: vec3<f32> cannot be used as the type of a 'override'");
}
TEST_F(ResolverVariableValidationTest, ConstConstructorWrongType) {
// const c : i32 = 2u
WrapInFunction(Const(Source{{3, 3}}, "c", ty.i32(), Expr(2_u)));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
R"(3:3 error: cannot initialize const of type 'i32' with value of type 'u32')");
}
TEST_F(ResolverVariableValidationTest, LetConstructorWrongType) {
// var v : i32 = 2u
WrapInFunction(Let(Source{{3, 3}}, "v", ty.i32(), Expr(2_u)));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
R"(3:3 error: cannot initialize let of type 'i32' with value of type 'u32')");
}
TEST_F(ResolverVariableValidationTest, VarConstructorWrongType) {
// var v : i32 = 2u
WrapInFunction(Var(Source{{3, 3}}, "v", ty.i32(), ast::StorageClass::kNone, Expr(2_u)));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
R"(3:3 error: cannot initialize var of type 'i32' with value of type 'u32')");
}
TEST_F(ResolverVariableValidationTest, ConstConstructorWrongTypeViaAlias) {
auto* a = Alias("I32", ty.i32());
WrapInFunction(Const(Source{{3, 3}}, "v", ty.Of(a), Expr(2_u)));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
R"(3:3 error: cannot initialize const of type 'i32' with value of type 'u32')");
}
TEST_F(ResolverVariableValidationTest, LetConstructorWrongTypeViaAlias) {
auto* a = Alias("I32", ty.i32());
WrapInFunction(Let(Source{{3, 3}}, "v", ty.Of(a), Expr(2_u)));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
R"(3:3 error: cannot initialize let of type 'i32' with value of type 'u32')");
}
TEST_F(ResolverVariableValidationTest, VarConstructorWrongTypeViaAlias) {
auto* a = Alias("I32", ty.i32());
WrapInFunction(Var(Source{{3, 3}}, "v", ty.Of(a), ast::StorageClass::kNone, Expr(2_u)));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
R"(3:3 error: cannot initialize var of type 'i32' with value of type 'u32')");
}
TEST_F(ResolverVariableValidationTest, LetOfPtrConstructedWithRef) {
// var a : f32;
// let b : ptr<function,f32> = a;
const auto priv = ast::StorageClass::kFunction;
auto* var_a = Var("a", ty.f32(), priv);
auto* var_b = Let(Source{{12, 34}}, "b", ty.pointer<f32>(priv), Expr("a"), {});
WrapInFunction(var_a, var_b);
ASSERT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
R"(12:34 error: cannot initialize let of type 'ptr<function, f32, read_write>' with value of type 'f32')");
}
TEST_F(ResolverVariableValidationTest, LocalLetRedeclared) {
// let l : f32 = 1.;
// let l : i32 = 0;
auto* l1 = Let("l", ty.f32(), Expr(1_f));
auto* l2 = Let(Source{{12, 34}}, "l", ty.i32(), Expr(0_i));
WrapInFunction(l1, l2);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: redeclaration of 'l'\nnote: 'l' previously declared here");
}
TEST_F(ResolverVariableValidationTest, GlobalVarRedeclaredAsLocal) {
// var v : f32 = 2.1;
// fn my_func() {
// var v : f32 = 2.0;
// return 0;
// }
GlobalVar("v", ty.f32(), ast::StorageClass::kPrivate, Expr(2.1_f));
WrapInFunction(Var(Source{{12, 34}}, "v", ty.f32(), ast::StorageClass::kNone, Expr(2_f)));
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverVariableValidationTest, VarRedeclaredInInnerBlock) {
// {
// var v : f32;
// { var v : f32; }
// }
auto* var_outer = Var("v", ty.f32(), ast::StorageClass::kNone);
auto* var_inner = Var(Source{{12, 34}}, "v", ty.f32(), ast::StorageClass::kNone);
auto* inner = Block(Decl(var_inner));
auto* outer_body = Block(Decl(var_outer), inner);
WrapInFunction(outer_body);
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverVariableValidationTest, VarRedeclaredInIfBlock) {
// {
// var v : f32 = 3.14;
// if (true) { var v : f32 = 2.0; }
// }
auto* var_a_float = Var("v", ty.f32(), ast::StorageClass::kNone, Expr(3.1_f));
auto* var = Var(Source{{12, 34}}, "v", ty.f32(), ast::StorageClass::kNone, Expr(2_f));
auto* cond = Expr(true);
auto* body = Block(Decl(var));
auto* outer_body = Block(Decl(var_a_float), If(cond, body));
WrapInFunction(outer_body);
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverVariableValidationTest, InferredPtrStorageAccessMismatch) {
// struct Inner {
// arr: array<i32, 4>;
// }
// struct S {
// inner: Inner;
// }
// @group(0) @binding(0) var<storage> s : S;
// fn f() {
// let p : pointer<storage, i32, read_write> = &s.inner.arr[2i];
// }
auto* inner = Structure("Inner", {Member("arr", ty.array<i32, 4>())});
auto* buf = Structure("S", {Member("inner", ty.Of(inner))});
auto* storage = GlobalVar("s", ty.Of(buf), ast::StorageClass::kStorage,
ast::AttributeList{
create<ast::BindingAttribute>(0),
create<ast::GroupAttribute>(0),
});
auto* expr = IndexAccessor(MemberAccessor(MemberAccessor(storage, "inner"), "arr"), 2_i);
auto* ptr =
Let(Source{{12, 34}}, "p",
ty.pointer<i32>(ast::StorageClass::kStorage, ast::Access::kReadWrite), AddressOf(expr));
WrapInFunction(ptr);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: cannot initialize let of type "
"'ptr<storage, i32, read_write>' with value of type "
"'ptr<storage, i32, read>'");
}
TEST_F(ResolverVariableValidationTest, NonConstructibleType_Atomic) {
auto* v = Var("v", ty.atomic(Source{{12, 34}}, ty.i32()));
WrapInFunction(v);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: function-scope 'var' must have a constructible type");
}
TEST_F(ResolverVariableValidationTest, NonConstructibleType_RuntimeArray) {
auto* s = Structure("S", {Member(Source{{56, 78}}, "m", ty.array(ty.i32()))});
auto* v = Var(Source{{12, 34}}, "v", ty.Of(s));
WrapInFunction(v);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
R"(12:34 error: runtime-sized arrays can only be used in the <storage> storage class
56:78 note: while analysing structure member S.m
12:34 note: while instantiating 'var' v)");
}
TEST_F(ResolverVariableValidationTest, NonConstructibleType_Struct_WithAtomic) {
auto* s = Structure("S", {Member("m", ty.atomic(ty.i32()))});
auto* v = Var("v", ty.Of(s));
WrapInFunction(v);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "error: function-scope 'var' must have a constructible type");
}
TEST_F(ResolverVariableValidationTest, NonConstructibleType_InferredType) {
// @group(0) @binding(0) var s : sampler;
// fn foo() {
// var v = s;
// }
GlobalVar("s", ty.sampler(ast::SamplerKind::kSampler), GroupAndBinding(0, 0));
auto* v = Var(Source{{12, 34}}, "v", nullptr, Expr("s"));
WrapInFunction(v);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: function-scope 'var' must have a constructible type");
}
TEST_F(ResolverVariableValidationTest, InvalidStorageClassForInitializer) {
// var<workgroup> v : f32 = 1.23;
GlobalVar(Source{{12, 34}}, "v", ty.f32(), ast::StorageClass::kWorkgroup, Expr(1.23_f));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: var of storage class 'workgroup' cannot have "
"an initializer. var initializers are only supported for the "
"storage classes 'private' and 'function'");
}
TEST_F(ResolverVariableValidationTest, VectorConstNoType) {
// const a : mat3x3 = mat3x3<f32>();
WrapInFunction(Const("a", create<ast::Vector>(Source{{12, 34}}, nullptr, 3), vec3<f32>()));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: missing vector element type");
}
TEST_F(ResolverVariableValidationTest, VectorLetNoType) {
// let a : mat3x3 = mat3x3<f32>();
WrapInFunction(Let("a", create<ast::Vector>(Source{{12, 34}}, nullptr, 3), vec3<f32>()));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: missing vector element type");
}
TEST_F(ResolverVariableValidationTest, VectorVarNoType) {
// var a : mat3x3;
WrapInFunction(Var("a", create<ast::Vector>(Source{{12, 34}}, nullptr, 3)));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: missing vector element type");
}
TEST_F(ResolverVariableValidationTest, MatrixConstNoType) {
// const a : mat3x3 = mat3x3<f32>();
WrapInFunction(Const("a", create<ast::Matrix>(Source{{12, 34}}, nullptr, 3, 3), mat3x3<f32>()));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: missing matrix element type");
}
TEST_F(ResolverVariableValidationTest, MatrixLetNoType) {
// let a : mat3x3 = mat3x3<f32>();
WrapInFunction(Let("a", create<ast::Matrix>(Source{{12, 34}}, nullptr, 3, 3), mat3x3<f32>()));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: missing matrix element type");
}
TEST_F(ResolverVariableValidationTest, MatrixVarNoType) {
// var a : mat3x3;
WrapInFunction(Var("a", create<ast::Matrix>(Source{{12, 34}}, nullptr, 3, 3)));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: missing matrix element type");
}
TEST_F(ResolverVariableValidationTest, ConstStructure) {
auto* s = Structure("S", {Member("m", ty.i32())});
auto* c = Const("c", ty.Of(s), Construct(Source{{12, 34}}, ty.Of(s)));
WrapInFunction(c);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:34 error: 'const' initializer must be constant expression)");
}
TEST_F(ResolverVariableValidationTest, GlobalConstStructure) {
auto* s = Structure("S", {Member("m", ty.i32())});
GlobalConst("c", ty.Of(s), Construct(Source{{12, 34}}, ty.Of(s)));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:34 error: 'const' initializer must be constant expression)");
}
TEST_F(ResolverVariableValidationTest, ConstInitWithVar) {
auto* v = Var("v", nullptr, Expr(1_i));
auto* c = Const("c", nullptr, Expr(Source{{12, 34}}, v));
WrapInFunction(v, c);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:34 error: 'const' initializer must be constant expression)");
}
TEST_F(ResolverVariableValidationTest, ConstInitWithOverride) {
auto* o = Override("v", nullptr, Expr(1_i));
auto* c = Const("c", nullptr, Expr(Source{{12, 34}}, o));
WrapInFunction(c);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:34 error: 'const' initializer must be constant expression)");
}
TEST_F(ResolverVariableValidationTest, ConstInitWithLet) {
auto* l = Let("v", nullptr, Expr(1_i));
auto* c = Const("c", nullptr, Expr(Source{{12, 34}}, l));
WrapInFunction(l, c);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:34 error: 'const' initializer must be constant expression)");
}
} // namespace
} // namespace tint::resolver