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validator: Disallow [[override]] on non-const vars 

Only allow them on constants, where no other decoration is valid.

Change-Id: I83f19667adb1dd4ebbba86827324a45a8f1a80a4
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/50041
Auto-Submit: James Price <jrprice@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: James Price <jrprice@google.com>
This commit is contained in:
James Price 2021-05-06 12:36:52 +00:00 committed by Commit Bot service account
parent a67f8a44bb
commit ab3a9218b7
2 changed files with 54 additions and 14 deletions
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53
src/resolver/decoration_validation_test.cc
View File

@ -34,9 +34,9 @@ enum class DecorationKind {
kAlign,
kBinding,
kBuiltin,
kConstantId,
kGroup,
kLocation,
kOverride,
kOffset,
kSize,
kStage,
@ -63,12 +63,12 @@ static ast::Decoration* createDecoration(const Source& source,
return builder.create<ast::BindingDecoration>(source, 1);
case DecorationKind::kBuiltin:
return builder.Builtin(source, ast::Builtin::kPosition);
case DecorationKind::kConstantId:
return builder.create<ast::OverrideDecoration>(source, 0u);
case DecorationKind::kGroup:
return builder.create<ast::GroupDecoration>(source, 1u);
case DecorationKind::kLocation:
return builder.Location(source, 1);
case DecorationKind::kOverride:
return builder.create<ast::OverrideDecoration>(source, 0u);
case DecorationKind::kOffset:
return builder.create<ast::StructMemberOffsetDecoration>(source, 4u);
case DecorationKind::kSize:
@ -108,9 +108,9 @@ INSTANTIATE_TEST_SUITE_P(
TestParams{DecorationKind::kAlign, false},
TestParams{DecorationKind::kBinding, false},
TestParams{DecorationKind::kBuiltin, true},
TestParams{DecorationKind::kConstantId, false},
TestParams{DecorationKind::kGroup, false},
TestParams{DecorationKind::kLocation, true},
TestParams{DecorationKind::kOverride, false},
TestParams{DecorationKind::kOffset, false},
TestParams{DecorationKind::kSize, false},
TestParams{DecorationKind::kStage, false},
@ -150,9 +150,9 @@ INSTANTIATE_TEST_SUITE_P(
TestParams{DecorationKind::kAlign, false},
TestParams{DecorationKind::kBinding, false},
TestParams{DecorationKind::kBuiltin, false},
TestParams{DecorationKind::kConstantId, false},
TestParams{DecorationKind::kGroup, false},
TestParams{DecorationKind::kLocation, false},
TestParams{DecorationKind::kOverride, false},
TestParams{DecorationKind::kOffset, false},
TestParams{DecorationKind::kSize, false},
TestParams{DecorationKind::kStage, false},
@ -184,9 +184,9 @@ INSTANTIATE_TEST_SUITE_P(
TestParams{DecorationKind::kAlign, false},
TestParams{DecorationKind::kBinding, false},
TestParams{DecorationKind::kBuiltin, false},
TestParams{DecorationKind::kConstantId, false},
TestParams{DecorationKind::kGroup, false},
TestParams{DecorationKind::kLocation, false},
TestParams{DecorationKind::kOverride, false},
TestParams{DecorationKind::kOffset, false},
TestParams{DecorationKind::kSize, false},
TestParams{DecorationKind::kStage, false},
@ -222,9 +222,9 @@ INSTANTIATE_TEST_SUITE_P(
TestParams{DecorationKind::kAlign, true},
TestParams{DecorationKind::kBinding, false},
TestParams{DecorationKind::kBuiltin, true},
TestParams{DecorationKind::kConstantId, false},
TestParams{DecorationKind::kGroup, false},
TestParams{DecorationKind::kLocation, true},
TestParams{DecorationKind::kOverride, false},
TestParams{DecorationKind::kOffset, true},
TestParams{DecorationKind::kSize, true},
TestParams{DecorationKind::kStage, false},
@ -257,9 +257,44 @@ INSTANTIATE_TEST_SUITE_P(
TestParams{DecorationKind::kAlign, false},
TestParams{DecorationKind::kBinding, true},
TestParams{DecorationKind::kBuiltin, true},
TestParams{DecorationKind::kConstantId, true},
TestParams{DecorationKind::kGroup, true},
TestParams{DecorationKind::kLocation, true},
TestParams{DecorationKind::kOverride, false},
TestParams{DecorationKind::kOffset, false},
TestParams{DecorationKind::kSize, false},
TestParams{DecorationKind::kStage, false},
TestParams{DecorationKind::kStride, false},
TestParams{DecorationKind::kStructBlock, false},
TestParams{DecorationKind::kWorkgroup, false}));
using ConstantDecorationTest = TestWithParams;
TEST_P(ConstantDecorationTest, IsValid) {
auto& params = GetParam();
GlobalConst("a", ty.f32(), nullptr,
ast::DecorationList{
createDecoration(Source{{12, 34}}, *this, params.kind)});
WrapInFunction();
if (params.should_pass) {
EXPECT_TRUE(r()->Resolve()) << r()->error();
} else {
EXPECT_FALSE(r()->Resolve()) << r()->error();
EXPECT_EQ(r()->error(),
"12:34 error: decoration is not valid for constants");
}
}
INSTANTIATE_TEST_SUITE_P(
ResolverDecorationValidationTest,
ConstantDecorationTest,
testing::Values(TestParams{DecorationKind::kAccess, false},
TestParams{DecorationKind::kAlign, false},
TestParams{DecorationKind::kBinding, false},
TestParams{DecorationKind::kBuiltin, false},
TestParams{DecorationKind::kGroup, false},
TestParams{DecorationKind::kLocation, false},
TestParams{DecorationKind::kOverride, true},
TestParams{DecorationKind::kOffset, false},
TestParams{DecorationKind::kSize, false},
TestParams{DecorationKind::kStage, false},
@ -291,9 +326,9 @@ INSTANTIATE_TEST_SUITE_P(
TestParams{DecorationKind::kAlign, false},
TestParams{DecorationKind::kBinding, false},
TestParams{DecorationKind::kBuiltin, false},
TestParams{DecorationKind::kConstantId, false},
TestParams{DecorationKind::kGroup, false},
TestParams{DecorationKind::kLocation, false},
TestParams{DecorationKind::kOverride, false},
TestParams{DecorationKind::kOffset, false},
TestParams{DecorationKind::kSize, false},
// Skip kStage as we always apply it in this test

9
src/resolver/resolver.cc
View File

@ -501,9 +501,14 @@ bool Resolver::GlobalVariable(ast::Variable* var) {
for (auto* deco : var->decorations()) {
Mark(deco);
if (!(deco->Is<ast::BindingDecoration>() ||
if (var->is_const()) {
if (!deco->Is<ast::OverrideDecoration>()) {
diagnostics_.add_error("decoration is not valid for constants",
deco->source());
return false;
}
} else if (!(deco->Is<ast::BindingDecoration>() ||
deco->Is<ast::BuiltinDecoration>() ||
deco->Is<ast::OverrideDecoration>() ||
deco->Is<ast::GroupDecoration>() ||
deco->Is<ast::LocationDecoration>())) {
diagnostics_.add_error("decoration is not valid for variables",