dawn-cmake/src/resolver/var_let_validation_test.cc
Ben Clayton b05e185a36 resolver: Support shadowing
Add transform::Unshadow to renamed shadowed symbols. Required by a
number of other transforms.

Replace Resolver symbol resolution with dep-graph.

The dependency graph now performs full symbol resolution before the
regular resolver pass.
Make use of this instead of duplicating the effort.

Simplfies code, and actually performs variable shadowing consistently.

Fixed: tint:819
Bug: tint:1266
Change-Id: I595d1812aebe1d79d2d32e724ff90de36e74cf4b
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/70523
Reviewed-by: David Neto <dneto@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
2021-11-23 20:45:51 +00:00

313 lines
9.8 KiB
C++

// 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/struct_block_decoration.h"
#include "src/resolver/resolver.h"
#include "src/resolver/resolver_test_helper.h"
#include "gmock/gmock.h"
namespace tint {
namespace resolver {
namespace {
struct ResolverVarLetValidationTest : public resolver::TestHelper,
public testing::Test {};
TEST_F(ResolverVarLetValidationTest, LetNoInitializer) {
// let a : i32;
WrapInFunction(Const(Source{{12, 34}}, "a", ty.i32(), nullptr));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: let declaration must have an initializer");
}
TEST_F(ResolverVarLetValidationTest, GlobalLetNoInitializer) {
// let a : i32;
GlobalConst(Source{{12, 34}}, "a", ty.i32(), nullptr);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: let declaration must have an initializer");
}
TEST_F(ResolverVarLetValidationTest, VarNoInitializerNoType) {
// var a;
WrapInFunction(Var(Source{{12, 34}}, "a", nullptr));
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: function scope var declaration requires a type or "
"initializer");
}
TEST_F(ResolverVarLetValidationTest, GlobalVarNoInitializerNoType) {
// var a;
Global(Source{{12, 34}}, "a", nullptr);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"12:34 error: module scope var declaration requires a type and "
"initializer");
}
TEST_F(ResolverVarLetValidationTest, 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(ResolverVarLetValidationTest, LetTypeNotConstructible) {
// [[group(0), binding(0)]] var t1 : texture_2d<f32>;
// let t2 : t1;
auto* t1 =
Global("t1", ty.sampled_texture(ast::TextureDimension::k2d, ty.f32()),
GroupAndBinding(0, 0));
auto* t2 = Const(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(ResolverVarLetValidationTest, LetConstructorWrongType) {
// var v : i32 = 2u
WrapInFunction(Const(Source{{3, 3}}, "v", ty.i32(), Expr(2u)));
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(ResolverVarLetValidationTest, VarConstructorWrongType) {
// var v : i32 = 2u
WrapInFunction(
Var(Source{{3, 3}}, "v", ty.i32(), ast::StorageClass::kNone, Expr(2u)));
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(ResolverVarLetValidationTest, LetConstructorWrongTypeViaAlias) {
auto* a = Alias("I32", ty.i32());
WrapInFunction(Const(Source{{3, 3}}, "v", ty.Of(a), Expr(2u)));
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(ResolverVarLetValidationTest, VarConstructorWrongTypeViaAlias) {
auto* a = Alias("I32", ty.i32());
WrapInFunction(
Var(Source{{3, 3}}, "v", ty.Of(a), ast::StorageClass::kNone, Expr(2u)));
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(ResolverVarLetValidationTest, 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 =
Const(Source{{12, 34}}, "b", ty.pointer<float>(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(ResolverVarLetValidationTest, LocalLetRedeclared) {
// let l : f32 = 1.;
// let l : i32 = 0;
auto* l1 = Const("l", ty.f32(), Expr(1.f));
auto* l2 = Const(Source{{12, 34}}, "l", ty.i32(), Expr(0));
WrapInFunction(l1, l2);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
"12:34 error: redeclaration of 'l'\nnote: 'l' previously declared here");
}
TEST_F(ResolverVarLetValidationTest, GlobalVarRedeclaredAsLocal) {
// var v : f32 = 2.1;
// fn my_func() {
// var v : f32 = 2.0;
// return 0;
// }
Global("v", ty.f32(), ast::StorageClass::kPrivate, Expr(2.1f));
WrapInFunction(Var(Source{{12, 34}}, "v", ty.f32(), ast::StorageClass::kNone,
Expr(2.0f)));
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverVarLetValidationTest, 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(ResolverVarLetValidationTest, 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(3.1f));
auto* var = Var(Source{{12, 34}}, "v", ty.f32(), ast::StorageClass::kNone,
Expr(2.0f));
auto* cond = Expr(true);
auto* body = Block(Decl(var));
auto* outer_body =
Block(Decl(var_a_float),
create<ast::IfStatement>(cond, body, ast::ElseStatementList{}));
WrapInFunction(outer_body);
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverVarLetValidationTest, InferredPtrStorageAccessMismatch) {
// struct Inner {
// arr: array<i32, 4>;
// }
// [[block]] struct S {
// inner: Inner;
// }
// [[group(0), binding(0)]] var<storage> s : S;
// fn f() {
// let p : pointer<storage, i32, read_write> = &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::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, 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(ResolverVarLetValidationTest, 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 variable must have a constructible type");
}
TEST_F(ResolverVarLetValidationTest, NonConstructibleType_RuntimeArray) {
auto* s = Structure("S", {Member("m", ty.array(ty.i32()))}, {StructBlock()});
auto* v = Var("v", ty.Of(s));
WrapInFunction(v);
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(),
"error: function variable must have a constructible type");
}
TEST_F(ResolverVarLetValidationTest, 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 variable must have a constructible type");
}
TEST_F(ResolverVarLetValidationTest, NonConstructibleType_InferredType) {
// [[group(0), binding(0)]] var s : sampler;
// fn foo() {
// var v = s;
// }
Global("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 variable must have a constructible type");
}
TEST_F(ResolverVarLetValidationTest, InvalidStorageClassForInitializer) {
// var<workgroup> v : f32 = 1.23;
Global(Source{{12, 34}}, "v", ty.f32(), ast::StorageClass::kWorkgroup,
Expr(1.23f));
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'");
}
} // namespace
} // namespace resolver
} // namespace tint