318 lines
11 KiB
C++
318 lines
11 KiB
C++
// Copyright 2021 The Tint Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "src/tint/resolver/resolver.h"
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#include "src/tint/resolver/resolver_test_helper.h"
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#include "gmock/gmock.h"
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using namespace tint::number_suffixes; // NOLINT
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namespace tint::resolver {
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namespace {
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struct ResolverVarLetValidationTest : public resolver::TestHelper, public testing::Test {};
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TEST_F(ResolverVarLetValidationTest, LetNoInitializer) {
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// let a : i32;
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WrapInFunction(Let(Source{{12, 34}}, "a", ty.i32(), nullptr));
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EXPECT_FALSE(r()->Resolve());
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EXPECT_EQ(r()->error(), "12:34 error: 'let' declaration must have an initializer");
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}
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TEST_F(ResolverVarLetValidationTest, GlobalLetNoInitializer) {
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// let a : i32;
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GlobalConst(Source{{12, 34}}, "a", ty.i32(), nullptr);
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EXPECT_FALSE(r()->Resolve());
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EXPECT_EQ(r()->error(), "12:34 error: 'let' declaration must have an initializer");
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}
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TEST_F(ResolverVarLetValidationTest, VarNoInitializerNoType) {
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// var a;
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WrapInFunction(Var(Source{{12, 34}}, "a", nullptr));
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EXPECT_FALSE(r()->Resolve());
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EXPECT_EQ(r()->error(),
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"12:34 error: function-scope 'var' declaration requires a type or initializer");
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}
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TEST_F(ResolverVarLetValidationTest, GlobalVarNoInitializerNoType) {
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// var a;
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Global(Source{{12, 34}}, "a", nullptr);
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EXPECT_FALSE(r()->Resolve());
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EXPECT_EQ(r()->error(),
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"12:34 error: module-scope 'var' declaration requires a type or initializer");
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}
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TEST_F(ResolverVarLetValidationTest, VarTypeNotStorable) {
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// var i : i32;
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// var p : pointer<function, i32> = &v;
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auto* i = Var("i", ty.i32(), ast::StorageClass::kNone);
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auto* p = Var(Source{{56, 78}}, "a", ty.pointer<i32>(ast::StorageClass::kFunction),
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ast::StorageClass::kNone, AddressOf(Source{{12, 34}}, "i"));
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WrapInFunction(i, p);
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EXPECT_FALSE(r()->Resolve());
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EXPECT_EQ(r()->error(),
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"56:78 error: ptr<function, i32, read_write> cannot be used as the "
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"type of a var");
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}
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TEST_F(ResolverVarLetValidationTest, LetTypeNotConstructible) {
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// @group(0) @binding(0) var t1 : texture_2d<f32>;
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// let t2 : t1;
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auto* t1 = Global("t1", ty.sampled_texture(ast::TextureDimension::k2d, ty.f32()),
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GroupAndBinding(0, 0));
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auto* t2 = Let(Source{{56, 78}}, "t2", nullptr, Expr(t1));
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WrapInFunction(t2);
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EXPECT_FALSE(r()->Resolve());
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EXPECT_EQ(r()->error(), "56:78 error: texture_2d<f32> cannot be used as the type of a let");
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}
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TEST_F(ResolverVarLetValidationTest, LetConstructorWrongType) {
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// var v : i32 = 2u
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WrapInFunction(Let(Source{{3, 3}}, "v", ty.i32(), Expr(2_u)));
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EXPECT_FALSE(r()->Resolve());
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EXPECT_EQ(r()->error(),
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R"(3:3 error: cannot initialize let of type 'i32' with value of type 'u32')");
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}
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TEST_F(ResolverVarLetValidationTest, VarConstructorWrongType) {
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// var v : i32 = 2u
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WrapInFunction(Var(Source{{3, 3}}, "v", ty.i32(), ast::StorageClass::kNone, Expr(2_u)));
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EXPECT_FALSE(r()->Resolve());
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EXPECT_EQ(r()->error(),
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R"(3:3 error: cannot initialize var of type 'i32' with value of type 'u32')");
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}
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TEST_F(ResolverVarLetValidationTest, LetConstructorWrongTypeViaAlias) {
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auto* a = Alias("I32", ty.i32());
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WrapInFunction(Let(Source{{3, 3}}, "v", ty.Of(a), Expr(2_u)));
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EXPECT_FALSE(r()->Resolve());
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EXPECT_EQ(r()->error(),
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R"(3:3 error: cannot initialize let of type 'i32' with value of type 'u32')");
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}
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TEST_F(ResolverVarLetValidationTest, VarConstructorWrongTypeViaAlias) {
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auto* a = Alias("I32", ty.i32());
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WrapInFunction(Var(Source{{3, 3}}, "v", ty.Of(a), ast::StorageClass::kNone, Expr(2_u)));
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EXPECT_FALSE(r()->Resolve());
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EXPECT_EQ(r()->error(),
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R"(3:3 error: cannot initialize var of type 'i32' with value of type 'u32')");
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}
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TEST_F(ResolverVarLetValidationTest, LetOfPtrConstructedWithRef) {
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// var a : f32;
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// let b : ptr<function,f32> = a;
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const auto priv = ast::StorageClass::kFunction;
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auto* var_a = Var("a", ty.f32(), priv);
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auto* var_b = Let(Source{{12, 34}}, "b", ty.pointer<f32>(priv), Expr("a"), {});
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WrapInFunction(var_a, var_b);
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ASSERT_FALSE(r()->Resolve());
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EXPECT_EQ(
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r()->error(),
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R"(12:34 error: cannot initialize let of type 'ptr<function, f32, read_write>' with value of type 'f32')");
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}
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TEST_F(ResolverVarLetValidationTest, LocalLetRedeclared) {
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// let l : f32 = 1.;
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// let l : i32 = 0;
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auto* l1 = Let("l", ty.f32(), Expr(1_f));
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auto* l2 = Let(Source{{12, 34}}, "l", ty.i32(), Expr(0_i));
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WrapInFunction(l1, l2);
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EXPECT_FALSE(r()->Resolve());
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EXPECT_EQ(r()->error(),
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"12:34 error: redeclaration of 'l'\nnote: 'l' previously declared here");
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}
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TEST_F(ResolverVarLetValidationTest, GlobalVarRedeclaredAsLocal) {
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// var v : f32 = 2.1;
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// fn my_func() {
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// var v : f32 = 2.0;
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// return 0;
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// }
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Global("v", ty.f32(), ast::StorageClass::kPrivate, Expr(2.1_f));
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WrapInFunction(Var(Source{{12, 34}}, "v", ty.f32(), ast::StorageClass::kNone, Expr(2_f)));
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EXPECT_TRUE(r()->Resolve()) << r()->error();
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}
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TEST_F(ResolverVarLetValidationTest, VarRedeclaredInInnerBlock) {
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// {
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// var v : f32;
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// { var v : f32; }
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// }
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auto* var_outer = Var("v", ty.f32(), ast::StorageClass::kNone);
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auto* var_inner = Var(Source{{12, 34}}, "v", ty.f32(), ast::StorageClass::kNone);
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auto* inner = Block(Decl(var_inner));
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auto* outer_body = Block(Decl(var_outer), inner);
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WrapInFunction(outer_body);
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EXPECT_TRUE(r()->Resolve()) << r()->error();
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}
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TEST_F(ResolverVarLetValidationTest, VarRedeclaredInIfBlock) {
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// {
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// var v : f32 = 3.14;
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// if (true) { var v : f32 = 2.0; }
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// }
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auto* var_a_float = Var("v", ty.f32(), ast::StorageClass::kNone, Expr(3.1_f));
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auto* var = Var(Source{{12, 34}}, "v", ty.f32(), ast::StorageClass::kNone, Expr(2_f));
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auto* cond = Expr(true);
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auto* body = Block(Decl(var));
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auto* outer_body = Block(Decl(var_a_float), If(cond, body));
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WrapInFunction(outer_body);
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EXPECT_TRUE(r()->Resolve()) << r()->error();
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}
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TEST_F(ResolverVarLetValidationTest, InferredPtrStorageAccessMismatch) {
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// struct Inner {
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// arr: array<i32, 4>;
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// }
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// struct S {
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// inner: Inner;
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// }
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// @group(0) @binding(0) var<storage> s : S;
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// fn f() {
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// let p : pointer<storage, i32, read_write> = &s.inner.arr[2i];
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// }
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auto* inner = Structure("Inner", {Member("arr", ty.array<i32, 4>())});
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auto* buf = Structure("S", {Member("inner", ty.Of(inner))});
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auto* storage = Global("s", ty.Of(buf), ast::StorageClass::kStorage,
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ast::AttributeList{
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create<ast::BindingAttribute>(0),
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create<ast::GroupAttribute>(0),
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});
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auto* expr = IndexAccessor(MemberAccessor(MemberAccessor(storage, "inner"), "arr"), 2_i);
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auto* ptr =
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Let(Source{{12, 34}}, "p",
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ty.pointer<i32>(ast::StorageClass::kStorage, ast::Access::kReadWrite), AddressOf(expr));
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WrapInFunction(ptr);
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EXPECT_FALSE(r()->Resolve());
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EXPECT_EQ(r()->error(),
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"12:34 error: cannot initialize let of type "
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"'ptr<storage, i32, read_write>' with value of type "
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"'ptr<storage, i32, read>'");
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}
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TEST_F(ResolverVarLetValidationTest, NonConstructibleType_Atomic) {
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auto* v = Var("v", ty.atomic(Source{{12, 34}}, ty.i32()));
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WrapInFunction(v);
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EXPECT_FALSE(r()->Resolve());
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EXPECT_EQ(r()->error(), "12:34 error: function variable must have a constructible type");
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}
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TEST_F(ResolverVarLetValidationTest, NonConstructibleType_RuntimeArray) {
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auto* s = Structure("S", {Member(Source{{56, 78}}, "m", ty.array(ty.i32()))});
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auto* v = Var(Source{{12, 34}}, "v", ty.Of(s));
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WrapInFunction(v);
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EXPECT_FALSE(r()->Resolve());
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EXPECT_EQ(r()->error(),
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R"(12:34 error: runtime-sized arrays can only be used in the <storage> storage class
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56:78 note: while analysing structure member S.m
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12:34 note: while instantiating variable v)");
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}
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TEST_F(ResolverVarLetValidationTest, NonConstructibleType_Struct_WithAtomic) {
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auto* s = Structure("S", {Member("m", ty.atomic(ty.i32()))});
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auto* v = Var("v", ty.Of(s));
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WrapInFunction(v);
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EXPECT_FALSE(r()->Resolve());
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EXPECT_EQ(r()->error(), "error: function variable must have a constructible type");
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}
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TEST_F(ResolverVarLetValidationTest, NonConstructibleType_InferredType) {
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// @group(0) @binding(0) var s : sampler;
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// fn foo() {
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// var v = s;
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// }
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Global("s", ty.sampler(ast::SamplerKind::kSampler), GroupAndBinding(0, 0));
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auto* v = Var(Source{{12, 34}}, "v", nullptr, Expr("s"));
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WrapInFunction(v);
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EXPECT_FALSE(r()->Resolve());
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EXPECT_EQ(r()->error(), "12:34 error: function variable must have a constructible type");
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}
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TEST_F(ResolverVarLetValidationTest, InvalidStorageClassForInitializer) {
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// var<workgroup> v : f32 = 1.23;
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Global(Source{{12, 34}}, "v", ty.f32(), ast::StorageClass::kWorkgroup, Expr(1.23_f));
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EXPECT_FALSE(r()->Resolve());
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EXPECT_EQ(r()->error(),
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"12:34 error: var of storage class 'workgroup' cannot have "
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"an initializer. var initializers are only supported for the "
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"storage classes 'private' and 'function'");
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}
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TEST_F(ResolverVarLetValidationTest, VectorLetNoType) {
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// let a : mat3x3 = mat3x3<f32>();
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WrapInFunction(Let("a", create<ast::Vector>(Source{{12, 34}}, nullptr, 3), vec3<f32>()));
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EXPECT_FALSE(r()->Resolve());
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EXPECT_EQ(r()->error(), "12:34 error: missing vector element type");
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}
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TEST_F(ResolverVarLetValidationTest, VectorVarNoType) {
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// var a : mat3x3;
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WrapInFunction(Var("a", create<ast::Vector>(Source{{12, 34}}, nullptr, 3)));
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EXPECT_FALSE(r()->Resolve());
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EXPECT_EQ(r()->error(), "12:34 error: missing vector element type");
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}
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TEST_F(ResolverVarLetValidationTest, MatrixLetNoType) {
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// let a : mat3x3 = mat3x3<f32>();
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WrapInFunction(Let("a", create<ast::Matrix>(Source{{12, 34}}, nullptr, 3, 3), mat3x3<f32>()));
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EXPECT_FALSE(r()->Resolve());
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EXPECT_EQ(r()->error(), "12:34 error: missing matrix element type");
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}
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TEST_F(ResolverVarLetValidationTest, MatrixVarNoType) {
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// var a : mat3x3;
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WrapInFunction(Var("a", create<ast::Matrix>(Source{{12, 34}}, nullptr, 3, 3)));
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EXPECT_FALSE(r()->Resolve());
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EXPECT_EQ(r()->error(), "12:34 error: missing matrix element type");
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}
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} // namespace
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} // namespace tint::resolver
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