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[tint] Move validation code into a Validator class. 

This CL moves the Validate methods from the Resolver into a specific
Validator class used by the Resolver.

Bug: tint:1313
Change-Id: Ida21a0cc65f2679739c8499de7065ff8b58c4efc
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/87150
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
This commit is contained in:
dan sinclair 2022-04-21 13:40:16 +00:00 committed by Dawn LUCI CQ
parent 4091e0fa9c
commit f05575bb21
12 changed files with 1066 additions and 449 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
src/tint/BUILD.gn
View File

@ -376,9 +376,10 @@ libtint_source_set("libtint_core_all_src") {
"resolver/resolver.cc",
"resolver/resolver.h",
"resolver/resolver_constants.cc",
"resolver/resolver_validation.cc",
"resolver/sem_helper.cc",
"resolver/sem_helper.h",
"resolver/validator.cc",
"resolver/validator.h",
"scope_stack.h",
"sem/array.h",
"sem/atomic_type.h",

3
src/tint/CMakeLists.txt
View File

@ -256,10 +256,11 @@ set(TINT_LIB_SRCS
resolver/dependency_graph.h
resolver/resolver.cc
resolver/resolver_constants.cc
resolver/resolver_validation.cc
resolver/resolver.h
resolver/sem_helper.cc
resolver/sem_helper.h
resolver/validator.cc
resolver/validator.h
scope_stack.h
sem/array.cc
sem/array.h

207
src/tint/resolver/resolver.cc
View File

@ -85,7 +85,8 @@ Resolver::Resolver(ProgramBuilder* builder)
: builder_(builder),
diagnostics_(builder->Diagnostics()),
builtin_table_(BuiltinTable::Create(*builder)),
sem_(builder) {}
sem_(builder, dependencies_),
validator_(builder, sem_) {}
Resolver::~Resolver() = default;
@ -138,7 +139,7 @@ bool Resolver::ResolveInternal() {
SetShadows();
if (!ValidatePipelineStages()) {
if (!validator_.PipelineStages(entry_points_)) {
return false;
}
@ -172,7 +173,7 @@ sem::Type* Resolver::Type(const ast::Type* ty) {
}
if (auto* el = Type(t->type)) {
if (auto* vector = builder_->create<sem::Vector>(el, t->width)) {
if (ValidateVector(vector, t->source)) {
if (validator_.Vector(vector, t->source)) {
return vector;
}
}
@ -188,7 +189,7 @@ sem::Type* Resolver::Type(const ast::Type* ty) {
if (auto* column_type = builder_->create<sem::Vector>(el, t->rows)) {
if (auto* matrix =
builder_->create<sem::Matrix>(column_type, t->columns)) {
if (ValidateMatrix(matrix, t->source)) {
if (validator_.Matrix(matrix, t->source)) {
return matrix;
}
}
@ -200,7 +201,7 @@ sem::Type* Resolver::Type(const ast::Type* ty) {
[&](const ast::Atomic* t) -> sem::Atomic* {
if (auto* el = Type(t->type)) {
auto* a = builder_->create<sem::Atomic>(el);
if (!ValidateAtomic(t, a)) {
if (!validator_.Atomic(t, a)) {
return nullptr;
}
return a;
@ -240,7 +241,7 @@ sem::Type* Resolver::Type(const ast::Type* ty) {
},
[&](const ast::StorageTexture* t) -> sem::StorageTexture* {
if (auto* el = Type(t->type)) {
if (!ValidateStorageTexture(t)) {
if (!validator_.StorageTexture(t)) {
return nullptr;
}
return builder_->create<sem::StorageTexture>(t->dim, t->format,
@ -252,7 +253,7 @@ sem::Type* Resolver::Type(const ast::Type* ty) {
return builder_->create<sem::ExternalTexture>();
},
[&](Default) {
auto* resolved = ResolvedSymbol(ty);
auto* resolved = sem_.ResolvedSymbol(ty);
return Switch(
resolved, //
[&](sem::Type* type) { return type; },
@ -366,8 +367,8 @@ sem::Variable* Resolver::Variable(const ast::Variable* var,
if (kind == VariableKind::kLocal && !var->is_const &&
storage_class != ast::StorageClass::kFunction &&
IsValidationEnabled(var->attributes,
ast::DisabledValidation::kIgnoreStorageClass)) {
validator_.IsValidationEnabled(
var->attributes, ast::DisabledValidation::kIgnoreStorageClass)) {
AddError("function variable has a non-function storage class", var->source);
return nullptr;
}
@ -385,8 +386,8 @@ sem::Variable* Resolver::Variable(const ast::Variable* var,
builder_->create<sem::Reference>(storage_ty, storage_class, access);
}
if (rhs && !ValidateVariableConstructorOrCast(var, storage_class, storage_ty,
rhs->Type())) {
if (rhs && !validator_.VariableConstructorOrCast(var, storage_class,
storage_ty, rhs->Type())) {
return nullptr;
}
@ -547,17 +548,17 @@ sem::GlobalVariable* Resolver::GlobalVariable(const ast::Variable* var) {
}
}
if (!ValidateNoDuplicateAttributes(var->attributes)) {
if (!validator_.NoDuplicateAttributes(var->attributes)) {
return nullptr;
}
if (!ValidateGlobalVariable(sem)) {
if (!validator_.GlobalVariable(sem, constant_ids_, atomic_composite_info_)) {
return nullptr;
}
// TODO(bclayton): Call this at the end of resolve on all uniform and storage
// referenced structs
if (!ValidateStorageClassLayout(sem, valid_type_storage_layouts_)) {
if (!validator_.StorageClassLayout(sem, valid_type_storage_layouts_)) {
return nullptr;
}
@ -592,7 +593,7 @@ sem::Function* Resolver::Function(const ast::Function* decl) {
for (auto* attr : param->attributes) {
Mark(attr);
}
if (!ValidateNoDuplicateAttributes(param->attributes)) {
if (!validator_.NoDuplicateAttributes(param->attributes)) {
return nullptr;
}
@ -691,21 +692,21 @@ sem::Function* Resolver::Function(const ast::Function* decl) {
for (auto* attr : decl->attributes) {
Mark(attr);
}
if (!ValidateNoDuplicateAttributes(decl->attributes)) {
if (!validator_.NoDuplicateAttributes(decl->attributes)) {
return nullptr;
}
for (auto* attr : decl->return_type_attributes) {
Mark(attr);
}
if (!ValidateNoDuplicateAttributes(decl->return_type_attributes)) {
if (!validator_.NoDuplicateAttributes(decl->return_type_attributes)) {
return nullptr;
}
auto stage = current_function_
? current_function_->Declaration()->PipelineStage()
: ast::PipelineStage::kNone;
if (!ValidateFunction(func, stage)) {
if (!validator_.Function(func, stage)) {
return nullptr;
}
@ -809,7 +810,7 @@ bool Resolver::WorkgroupSize(const ast::Function* func) {
<< "could not resolve constant workgroup_size constant value";
continue;
}
// Validate and set the default value for this dimension.
// validator_.Validate and set the default value for this dimension.
if (is_i32 ? value.Elements()[0].i32 < 1 : value.Elements()[0].u32 < 1) {
AddError("workgroup_size argument must be at least 1", values[i]->source);
return false;
@ -843,7 +844,7 @@ bool Resolver::Statements(const ast::StatementList& stmts) {
current_statement_->Behaviors() = behaviors;
if (!ValidateStatements(stmts)) {
if (!validator_.Statements(stmts)) {
return false;
}
@ -958,7 +959,7 @@ sem::IfStatement* Resolver::IfStatement(const ast::IfStatement* stmt) {
sem->Behaviors().Add(sem::Behavior::kNext);
}
return ValidateIfStatement(sem);
return validator_.IfStatement(sem);
});
}
@ -989,7 +990,7 @@ sem::ElseStatement* Resolver::ElseStatement(const ast::ElseStatement* stmt) {
}
sem->Behaviors().Add(body->Behaviors());
return ValidateElseStatement(sem);
return validator_.ElseStatement(sem);
});
}
@ -1039,7 +1040,7 @@ sem::LoopStatement* Resolver::LoopStatement(const ast::LoopStatement* stmt) {
}
behaviors.Remove(sem::Behavior::kBreak, sem::Behavior::kContinue);
return ValidateLoopStatement(sem);
return validator_.LoopStatement(sem);
});
});
}
@ -1095,7 +1096,7 @@ sem::ForLoopStatement* Resolver::ForLoopStatement(
}
behaviors.Remove(sem::Behavior::kBreak, sem::Behavior::kContinue);
return ValidateForLoopStatement(sem);
return validator_.ForLoopStatement(sem);
});
}
@ -1226,7 +1227,7 @@ sem::Expression* Resolver::Bitcast(const ast::BitcastExpression* expr) {
sem->Behaviors() = inner->Behaviors();
if (!ValidateBitcast(expr, ty)) {
if (!validator_.Bitcast(expr, ty)) {
return nullptr;
}
@ -1316,7 +1317,7 @@ sem::Call* Resolver::Call(const ast::CallExpression* expr) {
Mark(vec);
auto* v = builder_->create<sem::Vector>(
arg_el_ty, static_cast<uint32_t>(vec->width));
if (!ValidateVector(v, vec->source)) {
if (!validator_.Vector(v, vec->source)) {
return nullptr;
}
builder_->Sem().Add(vec, v);
@ -1337,7 +1338,7 @@ sem::Call* Resolver::Call(const ast::CallExpression* expr) {
auto* column_type =
builder_->create<sem::Vector>(arg_el_ty, mat->rows);
auto* m = builder_->create<sem::Matrix>(column_type, mat->columns);
if (!ValidateMatrix(m, mat->source)) {
if (!validator_.Matrix(m, mat->source)) {
return nullptr;
}
builder_->Sem().Add(mat, m);
@ -1359,7 +1360,7 @@ sem::Call* Resolver::Call(const ast::CallExpression* expr) {
auto* ident = expr->target.name;
Mark(ident);
auto* resolved = ResolvedSymbol(ident);
auto* resolved = sem_.ResolvedSymbol(ident);
return Switch(
resolved, //
[&](sem::Type* type) { return type_ctor_or_conv(type); },
@ -1414,7 +1415,7 @@ sem::Call* Resolver::BuiltinCall(const ast::CallExpression* expr,
current_function_->AddDirectlyCalledBuiltin(builtin);
if (IsTextureBuiltin(builtin_type)) {
if (!ValidateTextureBuiltinFunction(call)) {
if (!validator_.TextureBuiltinFunction(call)) {
return nullptr;
}
// Collect a texture/sampler pair for this builtin.
@ -1436,7 +1437,7 @@ sem::Call* Resolver::BuiltinCall(const ast::CallExpression* expr,
}
}
if (!ValidateBuiltinCall(call)) {
if (!validator_.BuiltinCall(call)) {
return nullptr;
}
@ -1500,7 +1501,7 @@ sem::Call* Resolver::FunctionCall(
call->Behaviors() = arg_behaviors + target->Behaviors();
if (!ValidateFunctionCall(call)) {
if (!validator_.FunctionCall(call, current_statement_)) {
return nullptr;
}
@ -1527,23 +1528,23 @@ sem::Call* Resolver::TypeConversion(const ast::CallExpression* expr,
bool ok = Switch(
target,
[&](const sem::Vector* vec_type) {
return ValidateVectorConstructorOrCast(expr, vec_type);
return validator_.VectorConstructorOrCast(expr, vec_type);
},
[&](const sem::Matrix* mat_type) {
// Note: Matrix types currently cannot be converted (the element
// type must only be f32). We implement this for the day we
// support other matrix element types.
return ValidateMatrixConstructorOrCast(expr, mat_type);
return validator_.MatrixConstructorOrCast(expr, mat_type);
},
[&](const sem::Array* arr_type) {
return ValidateArrayConstructorOrCast(expr, arr_type);
return validator_.ArrayConstructorOrCast(expr, arr_type);
},
[&](const sem::Struct* struct_type) {
return ValidateStructureConstructorOrCast(expr, struct_type);
return validator_.StructureConstructorOrCast(expr, struct_type);
},
[&](Default) {
if (target->is_scalar()) {
return ValidateScalarConstructorOrCast(expr, target);
return validator_.ScalarConstructorOrCast(expr, target);
}
AddError("type is not constructible", expr->source);
return false;
@ -1593,20 +1594,20 @@ sem::Call* Resolver::TypeConstructor(
bool ok = Switch(
ty,
[&](const sem::Vector* vec_type) {
return ValidateVectorConstructorOrCast(expr, vec_type);
return validator_.VectorConstructorOrCast(expr, vec_type);
},
[&](const sem::Matrix* mat_type) {
return ValidateMatrixConstructorOrCast(expr, mat_type);
return validator_.MatrixConstructorOrCast(expr, mat_type);
},
[&](const sem::Array* arr_type) {
return ValidateArrayConstructorOrCast(expr, arr_type);
return validator_.ArrayConstructorOrCast(expr, arr_type);
},
[&](const sem::Struct* struct_type) {
return ValidateStructureConstructorOrCast(expr, struct_type);
return validator_.StructureConstructorOrCast(expr, struct_type);
},
[&](Default) {
if (ty->is_scalar()) {
return ValidateScalarConstructorOrCast(expr, ty);
return validator_.ScalarConstructorOrCast(expr, ty);
}
AddError("type is not constructible", expr->source);
return false;
@ -1652,7 +1653,7 @@ sem::Expression* Resolver::Literal(const ast::LiteralExpression* literal) {
sem::Expression* Resolver::Identifier(const ast::IdentifierExpression* expr) {
auto symbol = expr->symbol;
auto* resolved = ResolvedSymbol(expr);
auto* resolved = sem_.ResolvedSymbol(expr);
if (auto* var = As<sem::Variable>(resolved)) {
auto* user =
builder_->create<sem::VariableUser>(expr, current_statement_, var);
@ -2156,7 +2157,8 @@ sem::Array* Resolver::Array(const ast::Array* arr) {
return nullptr;
}
if (!IsPlain(elem_type)) { // Check must come before GetDefaultAlignAndSize()
if (!validator_.IsPlain(
elem_type)) { // Check must come before GetDefaultAlignAndSize()
AddError(sem_.TypeNameOf(elem_type) +
" cannot be used as an element type of an array",
source);
@ -2166,7 +2168,7 @@ sem::Array* Resolver::Array(const ast::Array* arr) {
uint32_t el_align = elem_type->Align();
uint32_t el_size = elem_type->Size();
if (!ValidateNoDuplicateAttributes(arr->attributes)) {
if (!validator_.NoDuplicateAttributes(arr->attributes)) {
return nullptr;
}
@ -2176,7 +2178,7 @@ sem::Array* Resolver::Array(const ast::Array* arr) {
Mark(attr);
if (auto* sd = attr->As<ast::StrideAttribute>()) {
explicit_stride = sd->stride;
if (!ValidateArrayStrideAttribute(sd, el_size, el_align, source)) {
if (!validator_.ArrayStrideAttribute(sd, el_size, el_align, source)) {
return nullptr;
}
continue;
@ -2210,7 +2212,7 @@ sem::Array* Resolver::Array(const ast::Array* arr) {
if (auto* ident = count_expr->As<ast::IdentifierExpression>()) {
// Make sure the identifier is a non-overridable module-scope constant.
auto* var = ResolvedSymbol<sem::GlobalVariable>(ident);
auto* var = sem_.ResolvedSymbol<sem::GlobalVariable>(ident);
if (!var || !var->Declaration()->is_const) {
AddError("array size identifier must be a module-scope constant",
size_source);
@ -2266,7 +2268,7 @@ sem::Array* Resolver::Array(const ast::Array* arr) {
elem_type, count, el_align, static_cast<uint32_t>(size),
static_cast<uint32_t>(stride), static_cast<uint32_t>(implicit_stride));
if (!ValidateArray(out, source)) {
if (!validator_.Array(out, source)) {
return nullptr;
}
@ -2287,14 +2289,14 @@ sem::Type* Resolver::Alias(const ast::Alias* alias) {
if (!ty) {
return nullptr;
}
if (!ValidateAlias(alias)) {
if (!validator_.Alias(alias)) {
return nullptr;
}
return ty;
}
sem::Struct* Resolver::Structure(const ast::Struct* str) {
if (!ValidateNoDuplicateAttributes(str->attributes)) {
if (!validator_.NoDuplicateAttributes(str->attributes)) {
return nullptr;
}
for (auto* attr : str->attributes) {
@ -2335,8 +2337,8 @@ sem::Struct* Resolver::Structure(const ast::Struct* str) {
return nullptr;
}
// Validate member type
if (!IsPlain(type)) {
// validator_.Validate member type
if (!validator_.IsPlain(type)) {
AddError(sem_.TypeNameOf(type) +
" cannot be used as the type of a structure member",
member->source);
@ -2347,7 +2349,7 @@ sem::Struct* Resolver::Structure(const ast::Struct* str) {
uint64_t align = type->Align();
uint64_t size = type->Size();
if (!ValidateNoDuplicateAttributes(member->attributes)) {
if (!validator_.NoDuplicateAttributes(member->attributes)) {
return nullptr;
}
@ -2453,7 +2455,7 @@ sem::Struct* Resolver::Structure(const ast::Struct* str) {
auto stage = current_function_
? current_function_->Declaration()->PipelineStage()
: ast::PipelineStage::kNone;
if (!ValidateStructure(out, stage)) {
if (!validator_.Structure(out, stage)) {
return nullptr;
}
@ -2479,7 +2481,8 @@ sem::Statement* Resolver::ReturnStatement(const ast::ReturnStatement* stmt) {
// is available for validation.
auto* ret_type = stmt->value ? sem_.TypeOf(stmt->value)->UnwrapRef()
: builder_->create<sem::Void>();
return ValidateReturn(stmt, current_function_->ReturnType(), ret_type);
return validator_.Return(stmt, current_function_->ReturnType(), ret_type,
current_statement_);
});
}
@ -2510,7 +2513,7 @@ sem::SwitchStatement* Resolver::SwitchStatement(
}
behaviors.Remove(sem::Behavior::kBreak, sem::Behavior::kFallthrough);
return ValidateSwitch(stmt);
return validator_.SwitchStatement(stmt);
});
}
@ -2542,7 +2545,7 @@ sem::Statement* Resolver::VariableDeclStatement(
sem->Behaviors() = ctor->Behaviors();
}
return ValidateVariable(var);
return validator_.Variable(var);
});
}
@ -2567,7 +2570,7 @@ sem::Statement* Resolver::AssignmentStatement(
behaviors.Add(lhs->Behaviors());
}
return ValidateAssignment(stmt, sem_.TypeOf(stmt->rhs));
return validator_.Assignment(stmt, sem_.TypeOf(stmt->rhs));
});
}
@ -2577,7 +2580,7 @@ sem::Statement* Resolver::BreakStatement(const ast::BreakStatement* stmt) {
return StatementScope(stmt, sem, [&] {
sem->Behaviors() = sem::Behavior::kBreak;
return ValidateBreakStatement(sem);
return validator_.BreakStatement(sem, current_statement_);
});
}
@ -2620,7 +2623,7 @@ sem::Statement* Resolver::CompoundAssignmentStatement(
stmt->source);
return false;
}
return ValidateAssignment(stmt, ty);
return validator_.Assignment(stmt, ty);
});
}
@ -2639,7 +2642,7 @@ sem::Statement* Resolver::ContinueStatement(
}
}
return ValidateContinueStatement(sem);
return validator_.ContinueStatement(sem, current_statement_);
});
}
@ -2650,7 +2653,7 @@ sem::Statement* Resolver::DiscardStatement(const ast::DiscardStatement* stmt) {
sem->Behaviors() = sem::Behavior::kDiscard;
current_function_->SetHasDiscard();
return ValidateDiscardStatement(sem);
return validator_.DiscardStatement(sem, current_statement_);
});
}
@ -2661,7 +2664,7 @@ sem::Statement* Resolver::FallthroughStatement(
return StatementScope(stmt, sem, [&] {
sem->Behaviors() = sem::Behavior::kFallthrough;
return ValidateFallthroughStatement(sem);
return validator_.FallthroughStatement(sem);
});
}
@ -2676,7 +2679,7 @@ sem::Statement* Resolver::IncrementDecrementStatement(
}
sem->Behaviors() = lhs->Behaviors();
return ValidateIncrementDecrementStatement(stmt);
return validator_.IncrementDecrementStatement(stmt);
});
}
@ -2718,7 +2721,7 @@ bool Resolver::ApplyStorageClassUsageToType(ast::StorageClass sc,
sc, const_cast<sem::Type*>(arr->ElemType()), usage);
}
if (ast::IsHostShareable(sc) && !IsHostShareable(ty)) {
if (ast::IsHostShareable(sc) && !validator_.IsHostShareable(ty)) {
std::stringstream err;
err << "Type '" << sem_.TypeNameOf(ty)
<< "' cannot be used in storage class '" << sc
@ -2782,62 +2785,6 @@ void Resolver::AddNote(const std::string& msg, const Source& source) const {
diagnostics_.add_note(diag::System::Resolver, msg, source);
}
// https://gpuweb.github.io/gpuweb/wgsl/#plain-types-section
bool Resolver::IsPlain(const sem::Type* type) const {
return type->is_scalar() ||
type->IsAnyOf<sem::Atomic, sem::Vector, sem::Matrix, sem::Array,
sem::Struct>();
}
// https://gpuweb.github.io/gpuweb/wgsl/#fixed-footprint-types
bool Resolver::IsFixedFootprint(const sem::Type* type) const {
return Switch(
type, //
[&](const sem::Vector*) { return true; }, //
[&](const sem::Matrix*) { return true; }, //
[&](const sem::Atomic*) { return true; },
[&](const sem::Array* arr) {
return !arr->IsRuntimeSized() && IsFixedFootprint(arr->ElemType());
},
[&](const sem::Struct* str) {
for (auto* member : str->Members()) {
if (!IsFixedFootprint(member->Type())) {
return false;
}
}
return true;
},
[&](Default) { return type->is_scalar(); });
}
// https://gpuweb.github.io/gpuweb/wgsl.html#storable-types
bool Resolver::IsStorable(const sem::Type* type) const {
return IsPlain(type) || type->IsAnyOf<sem::Texture, sem::Sampler>();
}
// https://gpuweb.github.io/gpuweb/wgsl.html#host-shareable-types
bool Resolver::IsHostShareable(const sem::Type* type) const {
if (type->IsAnyOf<sem::I32, sem::U32, sem::F32>()) {
return true;
}
return Switch(
type, //
[&](const sem::Vector* vec) { return IsHostShareable(vec->type()); },
[&](const sem::Matrix* mat) { return IsHostShareable(mat->type()); },
[&](const sem::Array* arr) { return IsHostShareable(arr->ElemType()); },
[&](const sem::Struct* str) {
for (auto* member : str->Members()) {
if (!IsHostShareable(member->Type())) {
return false;
}
}
return true;
},
[&](const sem::Atomic* atomic) {
return IsHostShareable(atomic->Type());
});
}
bool Resolver::IsBuiltin(Symbol symbol) const {
std::string name = builder_->Symbols().NameFor(symbol);
return sem::ParseBuiltinType(name) != sem::BuiltinType::kNone;
@ -2849,26 +2796,6 @@ bool Resolver::IsCallStatement(const ast::Expression* expr) const {
[&](auto* stmt) { return stmt->expr == expr; });
}
const ast::Statement* Resolver::ClosestContinuing(bool stop_at_loop) const {
for (const auto* s = current_statement_; s != nullptr; s = s->Parent()) {
if (stop_at_loop && s->Is<sem::LoopStatement>()) {
break;
}
if (s->Is<sem::LoopContinuingBlockStatement>()) {
return s->Declaration();
}
if (auto* f = As<sem::ForLoopStatement>(s->Parent())) {
if (f->Declaration()->continuing == s->Declaration()) {
return s->Declaration();
}
if (stop_at_loop) {
break;
}
}
}
return nullptr;
}
////////////////////////////////////////////////////////////////////////////////
// Resolver::TypeConversionSig
////////////////////////////////////////////////////////////////////////////////

139
src/tint/resolver/resolver.h
View File

@ -16,7 +16,6 @@
#define SRC_TINT_RESOLVER_RESOLVER_H_
#include <memory>
#include <set>
#include <string>
#include <unordered_map>
#include <unordered_set>
@ -27,13 +26,13 @@
#include "src/tint/program_builder.h"
#include "src/tint/resolver/dependency_graph.h"
#include "src/tint/resolver/sem_helper.h"
#include "src/tint/resolver/validator.h"
#include "src/tint/scope_stack.h"
#include "src/tint/sem/binding_point.h"
#include "src/tint/sem/block_statement.h"
#include "src/tint/sem/constant.h"
#include "src/tint/sem/function.h"
#include "src/tint/sem/struct.h"
#include "src/tint/utils/map.h"
#include "src/tint/utils/unique_vector.h"
// Forward declarations
@ -89,27 +88,31 @@ class Resolver {
/// @param type the given type
/// @returns true if the given type is a plain type
bool IsPlain(const sem::Type* type) const;
bool IsPlain(const sem::Type* type) const { return validator_.IsPlain(type); }
/// @param type the given type
/// @returns true if the given type is a fixed-footprint type
bool IsFixedFootprint(const sem::Type* type) const;
bool IsFixedFootprint(const sem::Type* type) const {
return validator_.IsFixedFootprint(type);
}
/// @param type the given type
/// @returns true if the given type is storable
bool IsStorable(const sem::Type* type) const;
bool IsStorable(const sem::Type* type) const {
return validator_.IsStorable(type);
}
/// @param type the given type
/// @returns true if the given type is host-shareable
bool IsHostShareable(const sem::Type* type) const;
bool IsHostShareable(const sem::Type* type) const {
return validator_.IsHostShareable(type);
}
private:
/// Describes the context in which a variable is declared
enum class VariableKind { kParameter, kLocal, kGlobal };
using ValidTypeStorageLayouts =
std::set<std::pair<const sem::Type*, ast::StorageClass>>;
ValidTypeStorageLayouts valid_type_storage_layouts_;
Validator::ValidTypeStorageLayouts valid_type_storage_layouts_;
/// Structure holding semantic information about a block (i.e. scope), such as
/// parent block and variables declared in the block.
@ -237,106 +240,6 @@ class Resolver {
const sem::Type* rhs_ty,
ast::BinaryOp op);
// AST and Type validation methods
// Each return true on success, false on failure.
bool ValidatePipelineStages() const;
bool ValidateAlias(const ast::Alias*) const;
bool ValidateArray(const sem::Array* arr, const Source& source) const;
bool ValidateArrayStrideAttribute(const ast::StrideAttribute* attr,
uint32_t el_size,
uint32_t el_align,
const Source& source) const;
bool ValidateAtomic(const ast::Atomic* a, const sem::Atomic* s) const;
bool ValidateAtomicVariable(const sem::Variable* var) const;
bool ValidateAssignment(const ast::Statement* a,
const sem::Type* rhs_ty) const;
bool ValidateBitcast(const ast::BitcastExpression* cast,
const sem::Type* to) const;
bool ValidateBreakStatement(const sem::Statement* stmt) const;
bool ValidateBuiltinAttribute(const ast::BuiltinAttribute* attr,
const sem::Type* storage_type,
ast::PipelineStage stage,
const bool is_input) const;
bool ValidateContinueStatement(const sem::Statement* stmt) const;
bool ValidateDiscardStatement(const sem::Statement* stmt) const;
bool ValidateElseStatement(const sem::ElseStatement* stmt) const;
bool ValidateEntryPoint(const sem::Function* func,
ast::PipelineStage stage) const;
bool ValidateForLoopStatement(const sem::ForLoopStatement* stmt) const;
bool ValidateFallthroughStatement(const sem::Statement* stmt) const;
bool ValidateFunction(const sem::Function* func,
ast::PipelineStage stage) const;
bool ValidateFunctionCall(const sem::Call* call) const;
bool ValidateGlobalVariable(const sem::Variable* var) const;
bool ValidateIfStatement(const sem::IfStatement* stmt) const;
bool ValidateIncrementDecrementStatement(
const ast::IncrementDecrementStatement* stmt) const;
bool ValidateInterpolateAttribute(const ast::InterpolateAttribute* attr,
const sem::Type* storage_type) const;
bool ValidateBuiltinCall(const sem::Call* call) const;
bool ValidateLocationAttribute(const ast::LocationAttribute* location,
const sem::Type* type,
std::unordered_set<uint32_t>& locations,
ast::PipelineStage stage,
const Source& source,
const bool is_input = false) const;
bool ValidateLoopStatement(const sem::LoopStatement* stmt) const;
bool ValidateMatrix(const sem::Matrix* ty, const Source& source) const;
bool ValidateFunctionParameter(const ast::Function* func,
const sem::Variable* var) const;
bool ValidateReturn(const ast::ReturnStatement* ret,
const sem::Type* func_type,
const sem::Type* ret_type) const;
bool ValidateStatements(const ast::StatementList& stmts) const;
bool ValidateStorageTexture(const ast::StorageTexture* t) const;
bool ValidateStructure(const sem::Struct* str,
ast::PipelineStage stage) const;
bool ValidateStructureConstructorOrCast(const ast::CallExpression* ctor,
const sem::Struct* struct_type) const;
bool ValidateSwitch(const ast::SwitchStatement* s);
bool ValidateVariable(const sem::Variable* var) const;
bool ValidateVariableConstructorOrCast(const ast::Variable* var,
ast::StorageClass storage_class,
const sem::Type* storage_type,
const sem::Type* rhs_type) const;
bool ValidateVector(const sem::Vector* ty, const Source& source) const;
bool ValidateVectorConstructorOrCast(const ast::CallExpression* ctor,
const sem::Vector* vec_type) const;
bool ValidateMatrixConstructorOrCast(const ast::CallExpression* ctor,
const sem::Matrix* matrix_type) const;
bool ValidateScalarConstructorOrCast(const ast::CallExpression* ctor,
const sem::Type* type) const;
bool ValidateArrayConstructorOrCast(const ast::CallExpression* ctor,
const sem::Array* arr_type) const;
bool ValidateTextureBuiltinFunction(const sem::Call* call) const;
bool ValidateNoDuplicateAttributes(
const ast::AttributeList& attributes) const;
bool ValidateStorageClassLayout(const sem::Type* type,
ast::StorageClass sc,
Source source,
ValidTypeStorageLayouts& layouts) const;
bool ValidateStorageClassLayout(const sem::Variable* var,
ValidTypeStorageLayouts& layouts) const;
/// @returns true if the attribute list contains a
/// ast::DisableValidationAttribute with the validation mode equal to
/// `validation`
bool IsValidationDisabled(const ast::AttributeList& attributes,
ast::DisabledValidation validation) const;
/// @returns true if the attribute list does not contains a
/// ast::DisableValidationAttribute with the validation mode equal to
/// `validation`
bool IsValidationEnabled(const ast::AttributeList& attributes,
ast::DisabledValidation validation) const;
/// Returns a human-readable string representation of the vector type name
/// with the given parameters.
/// @param size the vector dimension
/// @param element_type scalar vector sub-element type
/// @return pretty string representation
std::string VectorPretty(uint32_t size, const sem::Type* element_type) const;
/// Resolves the WorkgroupSize for the given function, assigning it to
/// current_function_
bool WorkgroupSize(const ast::Function*);
@ -457,23 +360,6 @@ class Resolver {
/// @returns true if `expr` is the current CallStatement's CallExpression
bool IsCallStatement(const ast::Expression* expr) const;
/// Searches the current statement and up through parents of the current
/// statement looking for a loop or for-loop continuing statement.
/// @returns the closest continuing statement to the current statement that
/// (transitively) owns the current statement.
/// @param stop_at_loop if true then the function will return nullptr if a
/// loop or for-loop was found before the continuing.
const ast::Statement* ClosestContinuing(bool stop_at_loop) const;
/// @returns the resolved symbol (function, type or variable) for the given
/// ast::Identifier or ast::TypeName cast to the given semantic type.
template <typename SEM = sem::Node>
SEM* ResolvedSymbol(const ast::Node* node) const {
auto* resolved = utils::Lookup(dependencies_.resolved_symbols, node);
return resolved ? const_cast<SEM*>(builder_->Sem().Get<SEM>(resolved))
: nullptr;
}
struct TypeConversionSig {
const sem::Type* target;
const sem::Type* source;
@ -511,6 +397,7 @@ class Resolver {
std::unique_ptr<BuiltinTable> const builtin_table_;
DependencyGraph dependencies_;
SemHelper sem_;
Validator validator_;
std::vector<sem::Function*> entry_points_;
std::unordered_map<const sem::Type*, const Source&> atomic_composite_info_;
std::unordered_set<const ast::Node*> marked_;

79
src/tint/resolver/resolver_is_storeable_test.cc Normal file
View File

@ -0,0 +1,79 @@
// 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 "gmock/gmock.h"
#include "src/tint/resolver/resolver_test_helper.h"
#include "src/tint/sem/atomic_type.h"
namespace tint::resolver {
namespace {
using ResolverIsStorableTest = ResolverTest;
TEST_F(ResolverIsStorableTest, Struct_AllMembersStorable) {
Structure("S", {
Member("a", ty.i32()),
Member("b", ty.f32()),
});
ASSERT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverIsStorableTest, Struct_SomeMembersNonStorable) {
Structure("S", {
Member("a", ty.i32()),
Member("b", ty.pointer<i32>(ast::StorageClass::kPrivate)),
});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
R"(error: ptr<private, i32, read_write> cannot be used as the type of a structure member)");
}
TEST_F(ResolverIsStorableTest, Struct_NestedStorable) {
auto* storable = Structure("Storable", {
Member("a", ty.i32()),
Member("b", ty.f32()),
});
Structure("S", {
Member("a", ty.i32()),
Member("b", ty.Of(storable)),
});
ASSERT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(ResolverIsStorableTest, Struct_NestedNonStorable) {
auto* non_storable =
Structure("nonstorable",
{
Member("a", ty.i32()),
Member("b", ty.pointer<i32>(ast::StorageClass::kPrivate)),
});
Structure("S", {
Member("a", ty.i32()),
Member("b", ty.Of(non_storable)),
});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
R"(error: ptr<private, i32, read_write> cannot be used as the type of a structure member)");
}
} // namespace
} // namespace tint::resolver

3
src/tint/resolver/sem_helper.cc
View File

@ -18,7 +18,8 @@
namespace tint::resolver {
SemHelper::SemHelper(ProgramBuilder* builder) : builder_(builder) {}
SemHelper::SemHelper(ProgramBuilder* builder, DependencyGraph& dependencies)
: builder_(builder), dependencies_(dependencies) {}
SemHelper::~SemHelper() = default;

16
src/tint/resolver/sem_helper.h
View File

@ -19,6 +19,8 @@
#include "src/tint/diagnostic/diagnostic.h"
#include "src/tint/program_builder.h"
#include "src/tint/resolver/dependency_graph.h"
#include "src/tint/utils/map.h"
namespace tint::resolver {
@ -27,7 +29,8 @@ class SemHelper {
public:
/// Constructor
/// @param builder the program builder
explicit SemHelper(ProgramBuilder* builder);
/// @param dependencies the program dependency graph
explicit SemHelper(ProgramBuilder* builder, DependencyGraph& dependencies);
~SemHelper();
/// Get is a helper for obtaining the semantic node for the given AST node.
@ -47,6 +50,16 @@ class SemHelper {
return const_cast<T*>(As<T>(sem));
}
/// @returns the resolved symbol (function, type or variable) for the given
/// ast::Identifier or ast::TypeName cast to the given semantic type.
/// @param node the node to retrieve
template <typename SEM = sem::Node>
SEM* ResolvedSymbol(const ast::Node* node) const {
auto* resolved = utils::Lookup(dependencies_.resolved_symbols, node);
return resolved ? const_cast<SEM*>(builder_->Sem().Get<SEM>(resolved))
: nullptr;
}
/// @returns the resolved type of the ast::Expression `expr`
/// @param expr the expression
sem::Type* TypeOf(const ast::Expression* expr) const;
@ -67,6 +80,7 @@ class SemHelper {
private:
ProgramBuilder* builder_;
DependencyGraph& dependencies_;
};
} // namespace tint::resolver

367
src/tint/resolver/resolver_validation.cc → src/tint/resolver/validator.cc
View File

@ -12,7 +12,7 @@
// See the License for the specific language governing permissions and
// limitations under the License.
#include "src/tint/resolver/resolver.h"
#include "src/tint/resolver/validator.h"
#include <algorithm>
#include <limits>
@ -149,8 +149,104 @@ void TraverseCallChain(diag::List& diagnostics,
} // namespace
bool Resolver::ValidateAtomic(const ast::Atomic* a,
const sem::Atomic* s) const {
Validator::Validator(ProgramBuilder* builder, SemHelper& sem)
: symbols_(builder->Symbols()),
diagnostics_(builder->Diagnostics()),
sem_(sem) {}
Validator::~Validator() = default;
void Validator::AddError(const std::string& msg, const Source& source) const {
diagnostics_.add_error(diag::System::Resolver, msg, source);
}
void Validator::AddWarning(const std::string& msg, const Source& source) const {
diagnostics_.add_warning(diag::System::Resolver, msg, source);
}
void Validator::AddNote(const std::string& msg, const Source& source) const {
diagnostics_.add_note(diag::System::Resolver, msg, source);
}
// https://gpuweb.github.io/gpuweb/wgsl/#plain-types-section
bool Validator::IsPlain(const sem::Type* type) const {
return type->is_scalar() ||
type->IsAnyOf<sem::Atomic, sem::Vector, sem::Matrix, sem::Array,
sem::Struct>();
}
// https://gpuweb.github.io/gpuweb/wgsl/#fixed-footprint-types
bool Validator::IsFixedFootprint(const sem::Type* type) const {
return Switch(
type, //
[&](const sem::Vector*) { return true; }, //
[&](const sem::Matrix*) { return true; }, //
[&](const sem::Atomic*) { return true; },
[&](const sem::Array* arr) {
return !arr->IsRuntimeSized() && IsFixedFootprint(arr->ElemType());
},
[&](const sem::Struct* str) {
for (auto* member : str->Members()) {
if (!IsFixedFootprint(member->Type())) {
return false;
}
}
return true;
},
[&](Default) { return type->is_scalar(); });
}
// https://gpuweb.github.io/gpuweb/wgsl.html#host-shareable-types
bool Validator::IsHostShareable(const sem::Type* type) const {
if (type->IsAnyOf<sem::I32, sem::U32, sem::F32>()) {
return true;
}
return Switch(
type, //
[&](const sem::Vector* vec) { return IsHostShareable(vec->type()); },
[&](const sem::Matrix* mat) { return IsHostShareable(mat->type()); },
[&](const sem::Array* arr) { return IsHostShareable(arr->ElemType()); },
[&](const sem::Struct* str) {
for (auto* member : str->Members()) {
if (!IsHostShareable(member->Type())) {
return false;
}
}
return true;
},
[&](const sem::Atomic* atomic) {
return IsHostShareable(atomic->Type());
});
}
// https://gpuweb.github.io/gpuweb/wgsl.html#storable-types
bool Validator::IsStorable(const sem::Type* type) const {
return IsPlain(type) || type->IsAnyOf<sem::Texture, sem::Sampler>();
}
const ast::Statement* Validator::ClosestContinuing(
bool stop_at_loop,
sem::Statement* current_statement) const {
for (const auto* s = current_statement; s != nullptr; s = s->Parent()) {
if (stop_at_loop && s->Is<sem::LoopStatement>()) {
break;
}
if (s->Is<sem::LoopContinuingBlockStatement>()) {
return s->Declaration();
}
if (auto* f = As<sem::ForLoopStatement>(s->Parent())) {
if (f->Declaration()->continuing == s->Declaration()) {
return s->Declaration();
}
if (stop_at_loop) {
break;
}
}
}
return nullptr;
}
bool Validator::Atomic(const ast::Atomic* a, const sem::Atomic* s) const {
// https://gpuweb.github.io/gpuweb/wgsl/#atomic-types
// T must be either u32 or i32.
if (!s->Type()->IsAnyOf<sem::U32, sem::I32>()) {
@ -161,7 +257,7 @@ bool Resolver::ValidateAtomic(const ast::Atomic* a,
return true;
}
bool Resolver::ValidateStorageTexture(const ast::StorageTexture* t) const {
bool Validator::StorageTexture(const ast::StorageTexture* t) const {
switch (t->access) {
case ast::Access::kWrite:
break;
@ -190,8 +286,7 @@ bool Resolver::ValidateStorageTexture(const ast::StorageTexture* t) const {
return true;
}
bool Resolver::ValidateVariableConstructorOrCast(
const ast::Variable* var,
bool Validator::VariableConstructorOrCast(const ast::Variable* var,
ast::StorageClass storage_class,
const sem::Type* storage_ty,
const sem::Type* rhs_ty) const {
@ -229,8 +324,7 @@ bool Resolver::ValidateVariableConstructorOrCast(
return true;
}
bool Resolver::ValidateStorageClassLayout(
const sem::Type* store_ty,
bool Validator::StorageClassLayout(const sem::Type* store_ty,
ast::StorageClass sc,
Source source,
ValidTypeStorageLayouts& layouts) const {
@ -255,7 +349,7 @@ bool Resolver::ValidateStorageClassLayout(
};
auto member_name_of = [this](const sem::StructMember* sm) {
return builder_->Symbols().NameFor(sm->Declaration()->symbol);
return symbols_.NameFor(sm->Declaration()->symbol);
};
// Cache result of type + storage class pair.
@ -273,9 +367,9 @@ bool Resolver::ValidateStorageClassLayout(
uint32_t required_align = required_alignment_of(m->Type());
// Recurse into the member type.
if (!ValidateStorageClassLayout(
m->Type(), sc, m->Declaration()->type->source, layouts)) {
AddNote("see layout of struct:\n" + str->Layout(builder_->Symbols()),
if (!StorageClassLayout(m->Type(), sc, m->Declaration()->type->source,
layouts)) {
AddNote("see layout of struct:\n" + str->Layout(symbols_),
str->Declaration()->source);
return false;
}
@ -283,7 +377,7 @@ bool Resolver::ValidateStorageClassLayout(
// Validate that member is at a valid byte offset
if (m->Offset() % required_align != 0) {
AddError("the offset of a struct member of type '" +
m->Type()->UnwrapRef()->FriendlyName(builder_->Symbols()) +
m->Type()->UnwrapRef()->FriendlyName(symbols_) +
"' in storage class '" + ast::ToString(sc) +
"' must be a multiple of " +
std::to_string(required_align) + " bytes, but '" +
@ -293,12 +387,12 @@ bool Resolver::ValidateStorageClassLayout(
std::to_string(required_align) + ") on this member",
m->Declaration()->source);
AddNote("see layout of struct:\n" + str->Layout(builder_->Symbols()),
AddNote("see layout of struct:\n" + str->Layout(symbols_),
str->Declaration()->source);
if (auto* member_str = m->Type()->As<sem::Struct>()) {
AddNote("and layout of struct member:\n" +
member_str->Layout(builder_->Symbols()),
AddNote(
"and layout of struct member:\n" + member_str->Layout(symbols_),
member_str->Declaration()->source);
}
@ -322,12 +416,12 @@ bool Resolver::ValidateStorageClassLayout(
"'. Consider setting @align(16) on this member",
m->Declaration()->source);
AddNote("see layout of struct:\n" + str->Layout(builder_->Symbols()),
AddNote("see layout of struct:\n" + str->Layout(symbols_),
str->Declaration()->source);
auto* prev_member_str = prev_member->Type()->As<sem::Struct>();
AddNote("and layout of previous member struct:\n" +
prev_member_str->Layout(builder_->Symbols()),
prev_member_str->Layout(symbols_),
prev_member_str->Declaration()->source);
return false;
}
@ -342,7 +436,7 @@ bool Resolver::ValidateStorageClassLayout(
// TODO(crbug.com/tint/1388): Ideally we'd pass the source for nested
// element type here, but we can't easily get that from the semantic node.
// We should consider recursing through the AST type nodes instead.
if (!ValidateStorageClassLayout(arr->ElemType(), sc, source, layouts)) {
if (!StorageClassLayout(arr->ElemType(), sc, source, layouts)) {
return false;
}
@ -384,11 +478,10 @@ bool Resolver::ValidateStorageClassLayout(
return true;
}
bool Resolver::ValidateStorageClassLayout(
const sem::Variable* var,
bool Validator::StorageClassLayout(const sem::Variable* var,
ValidTypeStorageLayouts& layouts) const {
if (auto* str = var->Type()->UnwrapRef()->As<sem::Struct>()) {
if (!ValidateStorageClassLayout(str, var->StorageClass(),
if (!StorageClassLayout(str, var->StorageClass(),
str->Declaration()->source, layouts)) {
AddNote("see declaration of variable", var->Declaration()->source);
return false;
@ -398,8 +491,8 @@ bool Resolver::ValidateStorageClassLayout(
if (var->Declaration()->type) {
source = var->Declaration()->type->source;
}
if (!ValidateStorageClassLayout(var->Type()->UnwrapRef(),
var->StorageClass(), source, layouts)) {
if (!StorageClassLayout(var->Type()->UnwrapRef(), var->StorageClass(),
source, layouts)) {
return false;
}
}
@ -407,9 +500,13 @@ bool Resolver::ValidateStorageClassLayout(
return true;
}
bool Resolver::ValidateGlobalVariable(const sem::Variable* var) const {
bool Validator::GlobalVariable(
const sem::Variable* var,
std::unordered_map<uint32_t, const sem::Variable*> constant_ids,
std::unordered_map<const sem::Type*, const Source&> atomic_composite_info)
const {
auto* decl = var->Declaration();
if (!ValidateNoDuplicateAttributes(decl->attributes)) {
if (!NoDuplicateAttributes(decl->attributes)) {
return false;
}
@ -417,8 +514,8 @@ bool Resolver::ValidateGlobalVariable(const sem::Variable* var) const {
if (decl->is_const) {
if (auto* id_attr = attr->As<ast::IdAttribute>()) {
uint32_t id = id_attr->value;
auto it = constant_ids_.find(id);
if (it != constant_ids_.end() && it->second != var) {
auto it = constant_ids.find(id);
if (it != constant_ids.end() && it->second != var) {
AddError("pipeline constant IDs must be unique", attr->source);
AddNote("a pipeline constant with an ID of " + std::to_string(id) +
" was previously declared "
@ -502,18 +599,21 @@ bool Resolver::ValidateGlobalVariable(const sem::Variable* var) const {
}
if (!decl->is_const) {
if (!ValidateAtomicVariable(var)) {
if (!AtomicVariable(var, atomic_composite_info)) {
return false;
}
}
return ValidateVariable(var);
return Variable(var);
}
// https://gpuweb.github.io/gpuweb/wgsl/#atomic-types
// Atomic types may only be instantiated by variables in the workgroup storage
// class or by storage buffer variables with a read_write access mode.
bool Resolver::ValidateAtomicVariable(const sem::Variable* var) const {
bool Validator::AtomicVariable(
const sem::Variable* var,
std::unordered_map<const sem::Type*, const Source&> atomic_composite_info)
const {
auto sc = var->StorageClass();
auto* decl = var->Declaration();
auto access = var->Access();
@ -529,8 +629,8 @@ bool Resolver::ValidateAtomicVariable(const sem::Variable* var) const {
return false;
}
} else if (type->IsAnyOf<sem::Struct, sem::Array>()) {
auto found = atomic_composite_info_.find(type);
if (found != atomic_composite_info_.end()) {
auto found = atomic_composite_info.find(type);
if (found != atomic_composite_info.end()) {
if (sc != ast::StorageClass::kStorage &&
sc != ast::StorageClass::kWorkgroup) {
AddError(
@ -557,12 +657,12 @@ bool Resolver::ValidateAtomicVariable(const sem::Variable* var) const {
return true;
}
bool Resolver::ValidateVariable(const sem::Variable* var) const {
bool Validator::Variable(const sem::Variable* var) const {
auto* decl = var->Declaration();
auto* storage_ty = var->Type()->UnwrapRef();
if (var->Is<sem::GlobalVariable>()) {
auto name = builder_->Symbols().NameFor(decl->symbol);
auto name = symbols_.NameFor(decl->symbol);
if (sem::ParseBuiltinType(name) != sem::BuiltinType::kNone) {
auto* kind = var->Declaration()->is_const ? "let" : "var";
AddError(
@ -634,9 +734,9 @@ bool Resolver::ValidateVariable(const sem::Variable* var) const {
return true;
}
bool Resolver::ValidateFunctionParameter(const ast::Function* func,
bool Validator::FunctionParameter(const ast::Function* func,
const sem::Variable* var) const {
if (!ValidateVariable(var)) {
if (!Variable(var)) {
return false;
}
@ -697,7 +797,7 @@ bool Resolver::ValidateFunctionParameter(const ast::Function* func,
return true;
}
bool Resolver::ValidateBuiltinAttribute(const ast::BuiltinAttribute* attr,
bool Validator::BuiltinAttribute(const ast::BuiltinAttribute* attr,
const sem::Type* storage_ty,
ast::PipelineStage stage,
const bool is_input) const {
@ -816,8 +916,7 @@ bool Resolver::ValidateBuiltinAttribute(const ast::BuiltinAttribute* attr,
return true;
}
bool Resolver::ValidateInterpolateAttribute(
const ast::InterpolateAttribute* attr,
bool Validator::InterpolateAttribute(const ast::InterpolateAttribute* attr,
const sem::Type* storage_ty) const {
auto* type = storage_ty->UnwrapRef();
@ -839,11 +938,11 @@ bool Resolver::ValidateInterpolateAttribute(
return true;
}
bool Resolver::ValidateFunction(const sem::Function* func,
bool Validator::Function(const sem::Function* func,
ast::PipelineStage stage) const {
auto* decl = func->Declaration();
auto name = builder_->Symbols().NameFor(decl->symbol);
auto name = symbols_.NameFor(decl->symbol);
if (sem::ParseBuiltinType(name) != sem::BuiltinType::kNone) {
AddError(
"'" + name + "' is a builtin and cannot be redeclared as a function",
@ -873,7 +972,7 @@ bool Resolver::ValidateFunction(const sem::Function* func,
}
for (size_t i = 0; i < decl->params.size(); i++) {
if (!ValidateFunctionParameter(decl, func->Parameters()[i])) {
if (!FunctionParameter(decl, func->Parameters()[i])) {
return false;
}
}
@ -898,8 +997,7 @@ bool Resolver::ValidateFunction(const sem::Function* func,
decl->attributes,
ast::DisabledValidation::kFunctionHasNoBody)) {
TINT_ICE(Resolver, diagnostics_)
<< "Function " << builder_->Symbols().NameFor(decl->symbol)
<< " has no body";
<< "Function " << symbols_.NameFor(decl->symbol) << " has no body";
}
for (auto* attr : decl->return_type_attributes) {
@ -925,7 +1023,7 @@ bool Resolver::ValidateFunction(const sem::Function* func,
}
if (decl->IsEntryPoint()) {
if (!ValidateEntryPoint(func, stage)) {
if (!EntryPoint(func, stage)) {
return false;
}
}
@ -945,7 +1043,7 @@ bool Resolver::ValidateFunction(const sem::Function* func,
return true;
}
bool Resolver::ValidateEntryPoint(const sem::Function* func,
bool Validator::EntryPoint(const sem::Function* func,
ast::PipelineStage stage) const {
auto* decl = func->Declaration();
@ -994,7 +1092,7 @@ bool Resolver::ValidateEntryPoint(const sem::Function* func,
return false;
}
if (!ValidateBuiltinAttribute(
if (!BuiltinAttribute(
builtin, ty, stage,
/* is_input */ param_or_ret == ParamOrRetType::kParameter)) {
return false;
@ -1011,14 +1109,14 @@ bool Resolver::ValidateEntryPoint(const sem::Function* func,
bool is_input = param_or_ret == ParamOrRetType::kParameter;
if (!ValidateLocationAttribute(location, ty, locations, stage, source,
if (!LocationAttribute(location, ty, locations, stage, source,
is_input)) {
return false;
}
} else if (auto* interpolate = attr->As<ast::InterpolateAttribute>()) {
if (decl->PipelineStage() == ast::PipelineStage::kCompute) {
is_invalid_compute_shader_attribute = true;
} else if (!ValidateInterpolateAttribute(interpolate, ty)) {
} else if (!InterpolateAttribute(interpolate, ty)) {
return false;
}
interpolate_attribute = interpolate;
@ -1122,7 +1220,7 @@ bool Resolver::ValidateEntryPoint(const sem::Function* func,
member->Declaration()->source, param_or_ret,
/*is_struct_member*/ true)) {
AddNote("while analysing entry point '" +
builder_->Symbols().NameFor(decl->symbol) + "'",
symbols_.NameFor(decl->symbol) + "'",
decl->source);
return false;
}
@ -1206,7 +1304,7 @@ bool Resolver::ValidateEntryPoint(const sem::Function* func,
// variables in the resource interface of a given shader must not have
// the same group and binding values, when considered as a pair of
// values.
auto func_name = builder_->Symbols().NameFor(decl->symbol);
auto func_name = symbols_.NameFor(decl->symbol);
AddError("entry point '" + func_name +
"' references multiple variables that use the "
"same resource binding @group(" +
@ -1222,7 +1320,7 @@ bool Resolver::ValidateEntryPoint(const sem::Function* func,
return true;
}
bool Resolver::ValidateStatements(const ast::StatementList& stmts) const {
bool Validator::Statements(const ast::StatementList& stmts) const {
for (auto* stmt : stmts) {
if (!sem_.Get(stmt)->IsReachable()) {
/// TODO(https://github.com/gpuweb/gpuweb/issues/2378): This may need to
@ -1234,7 +1332,7 @@ bool Resolver::ValidateStatements(const ast::StatementList& stmts) const {
return true;
}
bool Resolver::ValidateBitcast(const ast::BitcastExpression* cast,
bool Validator::Bitcast(const ast::BitcastExpression* cast,
const sem::Type* to) const {
auto* from = sem_.TypeOf(cast->expr)->UnwrapRef();
if (!from->is_numeric_scalar_or_vector()) {
@ -1265,13 +1363,15 @@ bool Resolver::ValidateBitcast(const ast::BitcastExpression* cast,
return true;
}
bool Resolver::ValidateBreakStatement(const sem::Statement* stmt) const {
bool Validator::BreakStatement(const sem::Statement* stmt,
sem::Statement* current_statement) const {
if (!stmt->FindFirstParent<sem::LoopBlockStatement, sem::CaseStatement>()) {
AddError("break statement must be in a loop or switch case",
stmt->Declaration()->source);
return false;
}
if (auto* continuing = ClosestContinuing(/*stop_at_loop*/ true)) {
if (auto* continuing =
ClosestContinuing(/*stop_at_loop*/ true, current_statement)) {
auto fail = [&](const char* note_msg, const Source& note_src) {
constexpr const char* kErrorMsg =
"break statement in a continuing block must be the single statement "
@ -1332,8 +1432,10 @@ bool Resolver::ValidateBreakStatement(const sem::Statement* stmt) const {
return true;
}
bool Resolver::ValidateContinueStatement(const sem::Statement* stmt) const {
if (auto* continuing = ClosestContinuing(/*stop_at_loop*/ true)) {
bool Validator::ContinueStatement(const sem::Statement* stmt,
sem::Statement* current_statement) const {
if (auto* continuing =
ClosestContinuing(/*stop_at_loop*/ true, current_statement)) {
AddError("continuing blocks must not contain a continue statement",
stmt->Declaration()->source);
if (continuing != stmt->Declaration() &&
@ -1352,8 +1454,10 @@ bool Resolver::ValidateContinueStatement(const sem::Statement* stmt) const {
return true;
}
bool Resolver::ValidateDiscardStatement(const sem::Statement* stmt) const {
if (auto* continuing = ClosestContinuing(/*stop_at_loop*/ false)) {
bool Validator::DiscardStatement(const sem::Statement* stmt,
sem::Statement* current_statement) const {
if (auto* continuing =
ClosestContinuing(/*stop_at_loop*/ false, current_statement)) {
AddError("continuing blocks must not contain a discard statement",
stmt->Declaration()->source);
if (continuing != stmt->Declaration() &&
@ -1365,7 +1469,7 @@ bool Resolver::ValidateDiscardStatement(const sem::Statement* stmt) const {
return true;
}
bool Resolver::ValidateFallthroughStatement(const sem::Statement* stmt) const {
bool Validator::FallthroughStatement(const sem::Statement* stmt) const {
if (auto* block = As<sem::BlockStatement>(stmt->Parent())) {
if (auto* c = As<sem::CaseStatement>(block->Parent())) {
if (block->Declaration()->Last() == stmt->Declaration()) {
@ -1388,7 +1492,7 @@ bool Resolver::ValidateFallthroughStatement(const sem::Statement* stmt) const {
return false;
}
bool Resolver::ValidateElseStatement(const sem::ElseStatement* stmt) const {
bool Validator::ElseStatement(const sem::ElseStatement* stmt) const {
if (auto* cond = stmt->Condition()) {
auto* cond_ty = cond->Type()->UnwrapRef();
if (!cond_ty->Is<sem::Bool>()) {
@ -1401,7 +1505,7 @@ bool Resolver::ValidateElseStatement(const sem::ElseStatement* stmt) const {
return true;
}
bool Resolver::ValidateLoopStatement(const sem::LoopStatement* stmt) const {
bool Validator::LoopStatement(const sem::LoopStatement* stmt) const {
if (stmt->Behaviors().Empty()) {
AddError("loop does not exit", stmt->Declaration()->source.Begin());
return false;
@ -1409,8 +1513,7 @@ bool Resolver::ValidateLoopStatement(const sem::LoopStatement* stmt) const {
return true;
}
bool Resolver::ValidateForLoopStatement(
const sem::ForLoopStatement* stmt) const {
bool Validator::ForLoopStatement(const sem::ForLoopStatement* stmt) const {
if (stmt->Behaviors().Empty()) {
AddError("for-loop does not exit", stmt->Declaration()->source.Begin());
return false;
@ -1427,7 +1530,7 @@ bool Resolver::ValidateForLoopStatement(
return true;
}
bool Resolver::ValidateIfStatement(const sem::IfStatement* stmt) const {
bool Validator::IfStatement(const sem::IfStatement* stmt) const {
auto* cond_ty = stmt->Condition()->Type()->UnwrapRef();
if (!cond_ty->Is<sem::Bool>()) {
AddError(
@ -1438,7 +1541,7 @@ bool Resolver::ValidateIfStatement(const sem::IfStatement* stmt) const {
return true;
}
bool Resolver::ValidateBuiltinCall(const sem::Call* call) const {
bool Validator::BuiltinCall(const sem::Call* call) const {
if (call->Type()->Is<sem::Void>()) {
bool is_call_statement = false;
if (auto* call_stmt = As<ast::CallStatement>(call->Stmt()->Declaration())) {
@ -1451,7 +1554,7 @@ bool Resolver::ValidateBuiltinCall(const sem::Call* call) const {
// If the called function does not return a value, a function call
// statement should be used instead.
auto* ident = call->Declaration()->target.name;
auto name = builder_->Symbols().NameFor(ident->symbol);
auto name = symbols_.NameFor(ident->symbol);
AddError("builtin '" + name + "' does not return a value",
call->Declaration()->source);
return false;
@ -1461,7 +1564,7 @@ bool Resolver::ValidateBuiltinCall(const sem::Call* call) const {
return true;
}
bool Resolver::ValidateTextureBuiltinFunction(const sem::Call* call) const {
bool Validator::TextureBuiltinFunction(const sem::Call* call) const {
auto* builtin = call->Target()->As<sem::Builtin>();
if (!builtin) {
return false;
@ -1533,11 +1636,12 @@ bool Resolver::ValidateTextureBuiltinFunction(const sem::Call* call) const {
check_arg_is_constexpr(sem::ParameterUsage::kComponent, 0, 3);
}
bool Resolver::ValidateFunctionCall(const sem::Call* call) const {
bool Validator::FunctionCall(const sem::Call* call,
sem::Statement* current_statement) const {
auto* decl = call->Declaration();
auto* target = call->Target()->As<sem::Function>();
auto sym = decl->target.name->symbol;
auto name = builder_->Symbols().NameFor(sym);
auto name = symbols_.NameFor(sym);
if (target->Declaration()->IsEntryPoint()) {
// https://www.w3.org/TR/WGSL/#function-restriction
@ -1575,7 +1679,7 @@ bool Resolver::ValidateFunctionCall(const sem::Call* call) const {
if (param_type->Is<sem::Pointer>()) {
auto is_valid = false;
if (auto* ident_expr = arg_expr->As<ast::IdentifierExpression>()) {
auto* var = ResolvedSymbol<sem::Variable>(ident_expr);
auto* var = sem_.ResolvedSymbol<sem::Variable>(ident_expr);
if (!var) {
TINT_ICE(Resolver, diagnostics_) << "failed to resolve identifier";
return false;
@ -1587,7 +1691,7 @@ bool Resolver::ValidateFunctionCall(const sem::Call* call) const {
if (unary->op == ast::UnaryOp::kAddressOf) {
if (auto* ident_unary =
unary->expr->As<ast::IdentifierExpression>()) {
auto* var = ResolvedSymbol<sem::Variable>(ident_unary);
auto* var = sem_.ResolvedSymbol<sem::Variable>(ident_unary);
if (!var) {
TINT_ICE(Resolver, diagnostics_)
<< "failed to resolve identifier";
@ -1634,7 +1738,8 @@ bool Resolver::ValidateFunctionCall(const sem::Call* call) const {
}
if (call->Behaviors().Contains(sem::Behavior::kDiscard)) {
if (auto* continuing = ClosestContinuing(/*stop_at_loop*/ false)) {
if (auto* continuing =
ClosestContinuing(/*stop_at_loop*/ false, current_statement)) {
AddError(
"cannot call a function that may discard inside a continuing block",
call->Declaration()->source);
@ -1649,7 +1754,7 @@ bool Resolver::ValidateFunctionCall(const sem::Call* call) const {
return true;
}
bool Resolver::ValidateStructureConstructorOrCast(
bool Validator::StructureConstructorOrCast(
const ast::CallExpression* ctor,
const sem::Struct* struct_type) const {
if (!struct_type->IsConstructible()) {
@ -1684,8 +1789,7 @@ bool Resolver::ValidateStructureConstructorOrCast(
return true;
}
bool Resolver::ValidateArrayConstructorOrCast(
const ast::CallExpression* ctor,
bool Validator::ArrayConstructorOrCast(const ast::CallExpression* ctor,
const sem::Array* array_type) const {
auto& values = ctor->args;
auto* elem_ty = array_type->ElemType();
@ -1726,8 +1830,7 @@ bool Resolver::ValidateArrayConstructorOrCast(
return true;
}
bool Resolver::ValidateVectorConstructorOrCast(
const ast::CallExpression* ctor,
bool Validator::VectorConstructorOrCast(const ast::CallExpression* ctor,
const sem::Vector* vec_type) const {
auto& values = ctor->args;
auto* elem_ty = vec_type->type();
@ -1790,8 +1893,7 @@ bool Resolver::ValidateVectorConstructorOrCast(
return true;
}
bool Resolver::ValidateVector(const sem::Vector* ty,
const Source& source) const {
bool Validator::Vector(const sem::Vector* ty, const Source& source) const {
if (!ty->type()->is_scalar()) {
AddError("vector element type must be 'bool', 'f32', 'i32' or 'u32'",
source);
@ -1800,8 +1902,7 @@ bool Resolver::ValidateVector(const sem::Vector* ty,
return true;
}
bool Resolver::ValidateMatrix(const sem::Matrix* ty,
const Source& source) const {
bool Validator::Matrix(const sem::Matrix* ty, const Source& source) const {
if (!ty->is_float_matrix()) {
AddError("matrix element type must be 'f32'", source);
return false;
@ -1809,8 +1910,7 @@ bool Resolver::ValidateMatrix(const sem::Matrix* ty,
return true;
}
bool Resolver::ValidateMatrixConstructorOrCast(
const ast::CallExpression* ctor,
bool Validator::MatrixConstructorOrCast(const ast::CallExpression* ctor,
const sem::Matrix* matrix_ty) const {
auto& values = ctor->args;
// Zero Value expression
@ -1818,7 +1918,7 @@ bool Resolver::ValidateMatrixConstructorOrCast(
return true;
}
if (!ValidateMatrix(matrix_ty, ctor->source)) {
if (!Matrix(matrix_ty, ctor->source)) {
return false;
}
@ -1844,7 +1944,7 @@ bool Resolver::ValidateMatrixConstructorOrCast(
if (i > 0) {
ss << ", ";
}
ss << arg_tys[i]->FriendlyName(builder_->Symbols());
ss << arg_tys[i]->FriendlyName(symbols_);
}
ss << ")" << std::endl << std::endl;
ss << "3 candidates available:" << std::endl;
@ -1885,7 +1985,7 @@ bool Resolver::ValidateMatrixConstructorOrCast(
return true;
}
bool Resolver::ValidateScalarConstructorOrCast(const ast::CallExpression* ctor,
bool Validator::ScalarConstructorOrCast(const ast::CallExpression* ctor,
const sem::Type* ty) const {
if (ctor->args.size() == 0) {
return true;
@ -1921,7 +2021,8 @@ bool Resolver::ValidateScalarConstructorOrCast(const ast::CallExpression* ctor,
return true;
}
bool Resolver::ValidatePipelineStages() const {
bool Validator::PipelineStages(
const std::vector<sem::Function*>& entry_points) const {
auto check_workgroup_storage = [&](const sem::Function* func,
const sem::Function* entry_point) {
auto stage = entry_point->Declaration()->PipelineStage();
@ -1940,17 +2041,14 @@ bool Resolver::ValidatePipelineStages() const {
}
AddNote("variable is declared here", var->Declaration()->source);
if (func != entry_point) {
TraverseCallChain(diagnostics_, entry_point, func,
[&](const sem::Function* f) {
TraverseCallChain(
diagnostics_, entry_point, func, [&](const sem::Function* f) {
AddNote("called by function '" +
builder_->Symbols().NameFor(
f->Declaration()->symbol) +
"'",
symbols_.NameFor(f->Declaration()->symbol) + "'",
f->Declaration()->source);
});
AddNote("called by entry point '" +
builder_->Symbols().NameFor(
entry_point->Declaration()->symbol) +
symbols_.NameFor(entry_point->Declaration()->symbol) +
"'",
entry_point->Declaration()->source);
}
@ -1961,7 +2059,7 @@ bool Resolver::ValidatePipelineStages() const {
return true;
};
for (auto* entry_point : entry_points_) {
for (auto* entry_point : entry_points) {
if (!check_workgroup_storage(entry_point, entry_point)) {
return false;
}
@ -1985,15 +2083,12 @@ bool Resolver::ValidatePipelineStages() const {
if (func != entry_point) {
TraverseCallChain(
diagnostics_, entry_point, func, [&](const sem::Function* f) {
AddNote(
"called by function '" +
builder_->Symbols().NameFor(f->Declaration()->symbol) +
"'",
AddNote("called by function '" +
symbols_.NameFor(f->Declaration()->symbol) + "'",
f->Declaration()->source);
});
AddNote("called by entry point '" +
builder_->Symbols().NameFor(
entry_point->Declaration()->symbol) +
symbols_.NameFor(entry_point->Declaration()->symbol) +
"'",
entry_point->Declaration()->source);
}
@ -2003,7 +2098,7 @@ bool Resolver::ValidatePipelineStages() const {
return true;
};
for (auto* entry_point : entry_points_) {
for (auto* entry_point : entry_points) {
if (!check_builtin_calls(entry_point, entry_point)) {
return false;
}
@ -2016,8 +2111,7 @@ bool Resolver::ValidatePipelineStages() const {
return true;
}
bool Resolver::ValidateArray(const sem::Array* arr,
const Source& source) const {
bool Validator::Array(const sem::Array* arr, const Source& source) const {
auto* el_ty = arr->ElemType();
if (!IsFixedFootprint(el_ty)) {
@ -2028,7 +2122,7 @@ bool Resolver::ValidateArray(const sem::Array* arr,
return true;
}
bool Resolver::ValidateArrayStrideAttribute(const ast::StrideAttribute* attr,
bool Validator::ArrayStrideAttribute(const ast::StrideAttribute* attr,
uint32_t el_size,
uint32_t el_align,
const Source& source) const {
@ -2050,8 +2144,8 @@ bool Resolver::ValidateArrayStrideAttribute(const ast::StrideAttribute* attr,
return true;
}
bool Resolver::ValidateAlias(const ast::Alias* alias) const {
auto name = builder_->Symbols().NameFor(alias->name);
bool Validator::Alias(const ast::Alias* alias) const {
auto name = symbols_.NameFor(alias->name);
if (sem::ParseBuiltinType(name) != sem::BuiltinType::kNone) {
AddError("'" + name + "' is a builtin and cannot be redeclared as an alias",
alias->source);
@ -2061,9 +2155,9 @@ bool Resolver::ValidateAlias(const ast::Alias* alias) const {
return true;
}
bool Resolver::ValidateStructure(const sem::Struct* str,
bool Validator::Structure(const sem::Struct* str,
ast::PipelineStage stage) const {
auto name = builder_->Symbols().NameFor(str->Declaration()->name);
auto name = symbols_.NameFor(str->Declaration()->name);
if (sem::ParseBuiltinType(name) != sem::BuiltinType::kNone) {
AddError("'" + name + "' is a builtin and cannot be redeclared as a struct",
str->Declaration()->source);
@ -2122,12 +2216,12 @@ bool Resolver::ValidateStructure(const sem::Struct* str,
invariant_attribute = invariant;
} else if (auto* location = attr->As<ast::LocationAttribute>()) {
has_location = true;
if (!ValidateLocationAttribute(location, member->Type(), locations,
stage, member->Declaration()->source)) {
if (!LocationAttribute(location, member->Type(), locations, stage,
member->Declaration()->source)) {
return false;
}
} else if (auto* builtin = attr->As<ast::BuiltinAttribute>()) {
if (!ValidateBuiltinAttribute(builtin, member->Type(), stage,
if (!BuiltinAttribute(builtin, member->Type(), stage,
/* is_input */ false)) {
return false;
}
@ -2136,7 +2230,7 @@ bool Resolver::ValidateStructure(const sem::Struct* str,
}
} else if (auto* interpolate = attr->As<ast::InterpolateAttribute>()) {
interpolate_attribute = interpolate;
if (!ValidateInterpolateAttribute(interpolate, member->Type())) {
if (!InterpolateAttribute(interpolate, member->Type())) {
return false;
}
}
@ -2165,8 +2259,7 @@ bool Resolver::ValidateStructure(const sem::Struct* str,
return true;
}
bool Resolver::ValidateLocationAttribute(
const ast::LocationAttribute* location,
bool Validator::LocationAttribute(const ast::LocationAttribute* location,
const sem::Type* type,
std::unordered_set<uint32_t>& locations,
ast::PipelineStage stage,
@ -2201,9 +2294,10 @@ bool Resolver::ValidateLocationAttribute(
return true;
}
bool Resolver::ValidateReturn(const ast::ReturnStatement* ret,
bool Validator::Return(const ast::ReturnStatement* ret,
const sem::Type* func_type,
const sem::Type* ret_type) const {
const sem::Type* ret_type,
sem::Statement* current_statement) const {
if (func_type->UnwrapRef() != ret_type) {
AddError(
"return statement type must match its function "
@ -2215,7 +2309,8 @@ bool Resolver::ValidateReturn(const ast::ReturnStatement* ret,
}
auto* sem = sem_.Get(ret);
if (auto* continuing = ClosestContinuing(/*stop_at_loop*/ false)) {
if (auto* continuing =
ClosestContinuing(/*stop_at_loop*/ false, current_statement)) {
AddError("continuing blocks must not contain a return statement",
ret->source);
if (continuing != sem->Declaration() &&
@ -2228,7 +2323,7 @@ bool Resolver::ValidateReturn(const ast::ReturnStatement* ret,
return true;
}
bool Resolver::ValidateSwitch(const ast::SwitchStatement* s) {
bool Validator::SwitchStatement(const ast::SwitchStatement* s) {
auto* cond_ty = sem_.TypeOf(s->condition)->UnwrapRef();
if (!cond_ty->is_integer_scalar()) {
AddError(
@ -2284,7 +2379,7 @@ bool Resolver::ValidateSwitch(const ast::SwitchStatement* s) {
return true;
}
bool Resolver::ValidateAssignment(const ast::Statement* a,
bool Validator::Assignment(const ast::Statement* a,
const sem::Type* rhs_ty) const {
const ast::Expression* lhs;
const ast::Expression* rhs;
@ -2317,19 +2412,17 @@ bool Resolver::ValidateAssignment(const ast::Statement* a,
// https://gpuweb.github.io/gpuweb/wgsl/#assignment-statement
auto const* lhs_ty = sem_.TypeOf(lhs);
if (auto* var = ResolvedSymbol<sem::Variable>(lhs)) {
if (auto* var = sem_.ResolvedSymbol<sem::Variable>(lhs)) {
auto* decl = var->Declaration();
if (var->Is<sem::Parameter>()) {
AddError("cannot assign to function parameter", lhs->source);
AddNote("'" + builder_->Symbols().NameFor(decl->symbol) +
"' is declared here:",
AddNote("'" + symbols_.NameFor(decl->symbol) + "' is declared here:",
decl->source);
return false;
}
if (decl->is_const) {
AddError("cannot assign to const", lhs->source);
AddNote("'" + builder_->Symbols().NameFor(decl->symbol) +
"' is declared here:",
AddNote("'" + symbols_.NameFor(decl->symbol) + "' is declared here:",
decl->source);
return false;
}
@ -2366,25 +2459,23 @@ bool Resolver::ValidateAssignment(const ast::Statement* a,
return true;
}
bool Resolver::ValidateIncrementDecrementStatement(
bool Validator::IncrementDecrementStatement(
const ast::IncrementDecrementStatement* inc) const {
const ast::Expression* lhs = inc->lhs;
// https://gpuweb.github.io/gpuweb/wgsl/#increment-decrement
if (auto* var = ResolvedSymbol<sem::Variable>(lhs)) {
if (auto* var = sem_.ResolvedSymbol<sem::Variable>(lhs)) {
auto* decl = var->Declaration();
if (var->Is<sem::Parameter>()) {
AddError("cannot modify function parameter", lhs->source);
AddNote("'" + builder_->Symbols().NameFor(decl->symbol) +
"' is declared here:",
AddNote("'" + symbols_.NameFor(decl->symbol) + "' is declared here:",
decl->source);
return false;
}
if (decl->is_const) {
AddError("cannot modify constant value", lhs->source);
AddNote("'" + builder_->Symbols().NameFor(decl->symbol) +
"' is declared here:",
AddNote("'" + symbols_.NameFor(decl->symbol) + "' is declared here:",
decl->source);
return false;
}
@ -2415,7 +2506,7 @@ bool Resolver::ValidateIncrementDecrementStatement(
return true;
}
bool Resolver::ValidateNoDuplicateAttributes(
bool Validator::NoDuplicateAttributes(
const ast::AttributeList& attributes) const {
std::unordered_map<const TypeInfo*, Source> seen;
for (auto* d : attributes) {
@ -2429,7 +2520,7 @@ bool Resolver::ValidateNoDuplicateAttributes(
return true;
}
bool Resolver::IsValidationDisabled(const ast::AttributeList& attributes,
bool Validator::IsValidationDisabled(const ast::AttributeList& attributes,
ast::DisabledValidation validation) const {
for (auto* attribute : attributes) {
if (auto* dv = attribute->As<ast::DisableValidationAttribute>()) {
@ -2441,15 +2532,15 @@ bool Resolver::IsValidationDisabled(const ast::AttributeList& attributes,
return false;
}
bool Resolver::IsValidationEnabled(const ast::AttributeList& attributes,
bool Validator::IsValidationEnabled(const ast::AttributeList& attributes,
ast::DisabledValidation validation) const {
return !IsValidationDisabled(attributes, validation);
}
std::string Resolver::VectorPretty(uint32_t size,
std::string Validator::VectorPretty(uint32_t size,
const sem::Type* element_type) const {
sem::Vector vec_type(element_type, size);
return vec_type.FriendlyName(builder_->Symbols());
return vec_type.FriendlyName(symbols_);
}
} // namespace tint::resolver

457
src/tint/resolver/validator.h Normal file
View File

@ -0,0 +1,457 @@
// Copyright 2020 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.
#ifndef SRC_TINT_RESOLVER_VALIDATOR_H_
#define SRC_TINT_RESOLVER_VALIDATOR_H_
#include <set>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>
#include "src/tint/ast/pipeline_stage.h"
#include "src/tint/program_builder.h"
#include "src/tint/resolver/sem_helper.h"
#include "src/tint/source.h"
// Forward declarations
namespace tint::ast {
class IndexAccessorExpression;
class BinaryExpression;
class BitcastExpression;
class CallExpression;
class CallStatement;
class CaseStatement;
class ForLoopStatement;
class Function;
class IdentifierExpression;
class LoopStatement;
class MemberAccessorExpression;
class ReturnStatement;
class SwitchStatement;
class UnaryOpExpression;
class Variable;
} // namespace tint::ast
namespace tint::sem {
class Array;
class Atomic;
class BlockStatement;
class Builtin;
class CaseStatement;
class ElseStatement;
class ForLoopStatement;
class IfStatement;
class LoopStatement;
class Statement;
class SwitchStatement;
class TypeConstructor;
} // namespace tint::sem
namespace tint::resolver {
/// Validation logic for various ast nodes. The validations in general should
/// be shallow and depend on the resolver to call on children. The validations
/// also assume that sem changes have already been made. The validation checks
/// should not alter the AST or SEM trees.
class Validator {
public:
/// The valid type storage layouts typedef
using ValidTypeStorageLayouts =
std::set<std::pair<const sem::Type*, ast::StorageClass>>;
/// Constructor
/// @param builder the program builder
/// @param helper the SEM helper to validate with
Validator(ProgramBuilder* builder, SemHelper& helper);
~Validator();
/// Adds the given error message to the diagnostics
/// @param msg the error message
/// @param source the error source
void AddError(const std::string& msg, const Source& source) const;
/// Adds the given warning message to the diagnostics
/// @param msg the warning message
/// @param source the warning source
void AddWarning(const std::string& msg, const Source& source) const;
/// Adds the given note message to the diagnostics
/// @param msg the note message
/// @param source the note source
void AddNote(const std::string& msg, const Source& source) const;
/// @param type the given type
/// @returns true if the given type is a plain type
bool IsPlain(const sem::Type* type) const;
/// @param type the given type
/// @returns true if the given type is a fixed-footprint type
bool IsFixedFootprint(const sem::Type* type) const;
/// @param type the given type
/// @returns true if the given type is storable
bool IsStorable(const sem::Type* type) const;
/// @param type the given type
/// @returns true if the given type is host-shareable
bool IsHostShareable(const sem::Type* type) const;
/// Validates pipeline stages
/// @param entry_points the entry points to the module
/// @returns true on success, false otherwise.
bool PipelineStages(const std::vector<sem::Function*>& entry_points) const;
/// Validates aliases
/// @param alias the alias to validate
/// @returns true on success, false otherwise.
bool Alias(const ast::Alias* alias) const;
/// Validates the array
/// @param arr the array to validate
/// @param source the source of the array
/// @returns true on success, false otherwise.
bool Array(const sem::Array* arr, const Source& source) const;
/// Validates an array stride attribute
/// @param attr the stride attribute to validate
/// @param el_size the element size
/// @param el_align the element alignment
/// @param source the source of the attribute
/// @returns true on success, false otherwise
bool ArrayStrideAttribute(const ast::StrideAttribute* attr,
uint32_t el_size,
uint32_t el_align,
const Source& source) const;
/// Validates an atomic
/// @param a the atomic ast node to validate
/// @param s the atomic sem node
/// @returns true on success, false otherwise.
bool Atomic(const ast::Atomic* a, const sem::Atomic* s) const;
/// Validates an atoic variable
/// @param var the variable to validate
/// @param atomic_composite_info store atomic information
/// @returns true on success, false otherwise.
bool AtomicVariable(const sem::Variable* var,
std::unordered_map<const sem::Type*, const Source&>
atomic_composite_info) const;
/// Validates an assignment
/// @param a the assignment statement
/// @param rhs_ty the type of the right hand side
/// @returns true on success, false otherwise.
bool Assignment(const ast::Statement* a, const sem::Type* rhs_ty) const;
/// Validates a bitcase
/// @param cast the bitcast expression
/// @param to the destination type
/// @returns true on success, false otherwise
bool Bitcast(const ast::BitcastExpression* cast, const sem::Type* to) const;
/// Validates a break statement
/// @param stmt the break statement to validate
/// @param current_statement the current statement being resolved
/// @returns true on success, false otherwise.
bool BreakStatement(const sem::Statement* stmt,
sem::Statement* current_statement) const;
/// Validates a builtin attribute
/// @param attr the attribute to validate
/// @param storage_type the attribute storage type
/// @param stage the current pipeline stage
/// @param is_input true if this is an input attribute
/// @returns true on success, false otherwise.
bool BuiltinAttribute(const ast::BuiltinAttribute* attr,
const sem::Type* storage_type,
ast::PipelineStage stage,
const bool is_input) const;
/// Validates a continue statement
/// @param stmt the continue statement to validate
/// @param current_statement the current statement being resolved
/// @returns true on success, false otherwise
bool ContinueStatement(const sem::Statement* stmt,
sem::Statement* current_statement) const;
/// Validates a discard statement
/// @param stmt the statement to validate
/// @param current_statement the current statement being resolved
/// @returns true on success, false otherwise
bool DiscardStatement(const sem::Statement* stmt,
sem::Statement* current_statement) const;
/// Validates an else statement
/// @param stmt the else statement to validate
/// @returns true on success, false otherwise
bool ElseStatement(const sem::ElseStatement* stmt) const;
/// Validates an entry point
/// @param func the entry point function to validate
/// @param stage the pipeline stage for the entry point
/// @returns true on success, false otherwise
bool EntryPoint(const sem::Function* func, ast::PipelineStage stage) const;
/// Validates a for loop
/// @param stmt the for loop statement to validate
/// @returns true on success, false otherwise
bool ForLoopStatement(const sem::ForLoopStatement* stmt) const;
/// Validates a fallthrough statement
/// @param stmt the fallthrough to validate
/// @returns true on success, false otherwise
bool FallthroughStatement(const sem::Statement* stmt) const;
/// Validates a function
/// @param func the function to validate
/// @param stage the current pipeline stage
/// @returns true on success, false otherwise.
bool Function(const sem::Function* func, ast::PipelineStage stage) const;
/// Validates a function call
/// @param call the function call to validate
/// @param current_statement the current statement being resolved
/// @returns true on success, false otherwise
bool FunctionCall(const sem::Call* call,
sem::Statement* current_statement) const;
/// Validates a global variable
/// @param var the global variable to validate
/// @param constant_ids the set of constant ids in the module
/// @param atomic_composite_info atomic composite info in the module
/// @returns true on success, false otherwise
bool GlobalVariable(
const sem::Variable* var,
std::unordered_map<uint32_t, const sem::Variable*> constant_ids,
std::unordered_map<const sem::Type*, const Source&> atomic_composite_info)
const;
/// Validates an if statement
/// @param stmt the statement to validate
/// @returns true on success, false otherwise
bool IfStatement(const sem::IfStatement* stmt) const;
/// Validates an increment or decrement statement
/// @param stmt the statement to validate
/// @returns true on success, false otherwise
bool IncrementDecrementStatement(
const ast::IncrementDecrementStatement* stmt) const;
/// Validates an interpolate attribute
/// @param attr the interpolation attribute to validate
/// @param storage_type the storage type of the attached variable
/// @returns true on succes, false otherwise
bool InterpolateAttribute(const ast::InterpolateAttribute* attr,
const sem::Type* storage_type) const;
/// Validates a builtin call
/// @param call the builtin call to validate
/// @returns true on success, false otherwise.
bool BuiltinCall(const sem::Call* call) const;
/// Validates a location attribute
/// @param location the location attribute to validate
/// @param type the variable type
/// @param locations the set of locations in the module
/// @param stage the current pipeline stage
/// @param source the source of the attribute
/// @param is_input true if this is an input variable
/// @returns true on success, false otherwise.
bool LocationAttribute(const ast::LocationAttribute* location,
const sem::Type* type,
std::unordered_set<uint32_t>& locations,
ast::PipelineStage stage,
const Source& source,
const bool is_input = false) const;
/// Validates a loop statement
/// @param stmt the loop statement
/// @returns true on success, false otherwise.
bool LoopStatement(const sem::LoopStatement* stmt) const;
/// Validates a matrix
/// @param ty the matrix to validate
/// @param source the source of the matrix
/// @returns true on success, false otherwise
bool Matrix(const sem::Matrix* ty, const Source& source) const;
/// Validates a function parameter
/// @param func the function the variable is for
/// @param var the variable to validate
/// @returns true on success, false otherwise
bool FunctionParameter(const ast::Function* func,
const sem::Variable* var) const;
/// Validates a return
/// @param ret the return statement to validate
/// @param func_type the return type of the curreunt function
/// @param ret_type the return type
/// @param current_statement the current statement being resolved
/// @returns true on success, false otherwise
bool Return(const ast::ReturnStatement* ret,
const sem::Type* func_type,
const sem::Type* ret_type,
sem::Statement* current_statement) const;
/// Validates a list of statements
/// @param stmts the statements to validate
/// @returns true on success, false otherwise
bool Statements(const ast::StatementList& stmts) const;
/// Validates a storage texture
/// @param t the texture to validate
/// @returns true on success, false otherwise
bool StorageTexture(const ast::StorageTexture* t) const;
/// Validates a structure
/// @param str the structure to validate
/// @param stage the current pipeline stage
/// @returns true on success, false otherwise.
bool Structure(const sem::Struct* str, ast::PipelineStage stage) const;
/// Validates a structure constructor or cast
/// @param ctor the call expression to validate
/// @param struct_type the type of the structure
/// @returns true on success, false otherwise
bool StructureConstructorOrCast(const ast::CallExpression* ctor,
const sem::Struct* struct_type) const;
/// Validates a switch statement
/// @param s the switch to validate
/// @returns true on success, false otherwise
bool SwitchStatement(const ast::SwitchStatement* s);
/// Validates a variable
/// @param var the variable to validate
/// @returns true on success, false otherwise.
bool Variable(const sem::Variable* var) const;
/// Validates a variable constructor or cast
/// @param var the variable to validate
/// @param storage_class the storage class of the variable
/// @param storage_type the type of the storage
/// @param rhs_type the right hand side of the expression
/// @returns true on succes, false otherwise
bool VariableConstructorOrCast(const ast::Variable* var,
ast::StorageClass storage_class,
const sem::Type* storage_type,
const sem::Type* rhs_type) const;
/// Validates a vector
/// @param ty the vector to validate
/// @param source the source of the vector
/// @returns true on success, false otherwise
bool Vector(const sem::Vector* ty, const Source& source) const;
/// Validates a vector constructor or cast
/// @param ctor the call expression to validate
/// @param vec_type the vector type
/// @returns true on success, false otherwise
bool VectorConstructorOrCast(const ast::CallExpression* ctor,
const sem::Vector* vec_type) const;
/// Validates a matrix constructor or cast
/// @param ctor the call expression to validate
/// @param matrix_type the type of the matrix
/// @returns true on success, false otherwise
bool MatrixConstructorOrCast(const ast::CallExpression* ctor,
const sem::Matrix* matrix_type) const;
/// Validates a scalar constructor or cast
/// @param ctor the call expression to validate
/// @param type the type of the scalar
/// @returns true on success, false otherwise.
bool ScalarConstructorOrCast(const ast::CallExpression* ctor,
const sem::Type* type) const;
/// Validates an array constructor or cast
/// @param ctor the call expresion to validate
/// @param arr_type the type of the array
/// @returns true on success, false otherwise
bool ArrayConstructorOrCast(const ast::CallExpression* ctor,
const sem::Array* arr_type) const;
/// Validates a texture builtin function
/// @param call the builtin call to validate
/// @returns true on success, false otherwise
bool TextureBuiltinFunction(const sem::Call* call) const;
/// Validates there are no duplicate attributes
/// @param attributes the list of attributes to validate
/// @returns true on success, false otherwise.
bool NoDuplicateAttributes(const ast::AttributeList& attributes) const;
/// Validates a storage class layout
/// @param type the type to validate
/// @param sc the storage class
/// @param source the source of the type
/// @param layouts previously validated storage layouts
/// @returns true on success, false otherwise
bool StorageClassLayout(const sem::Type* type,
ast::StorageClass sc,
Source source,
ValidTypeStorageLayouts& layouts) const;
/// Validates a storage class layout
/// @param var the variable to validate
/// @param layouts previously validated storage layouts
/// @returns true on success, false otherwise.
bool StorageClassLayout(const sem::Variable* var,
ValidTypeStorageLayouts& layouts) const;
/// @returns true if the attribute list contains a
/// ast::DisableValidationAttribute with the validation mode equal to
/// `validation`
/// @param attributes the attribute list to check
/// @param validation the validation mode to check
bool IsValidationDisabled(const ast::AttributeList& attributes,
ast::DisabledValidation validation) const;
/// @returns true if the attribute list does not contains a
/// ast::DisableValidationAttribute with the validation mode equal to
/// `validation`
/// @param attributes the attribute list to check
/// @param validation the validation mode to check
bool IsValidationEnabled(const ast::AttributeList& attributes,
ast::DisabledValidation validation) const;
private:
/// Searches the current statement and up through parents of the current
/// statement looking for a loop or for-loop continuing statement.
/// @returns the closest continuing statement to the current statement that
/// (transitively) owns the current statement.
/// @param stop_at_loop if true then the function will return nullptr if a
/// loop or for-loop was found before the continuing.
/// @param current_statement the current statement being resolved
const ast::Statement* ClosestContinuing(
bool stop_at_loop,
sem::Statement* current_statement) const;
/// Returns a human-readable string representation of the vector type name
/// with the given parameters.
/// @param size the vector dimension
/// @param element_type scalar vector sub-element type
/// @return pretty string representation
std::string VectorPretty(uint32_t size, const sem::Type* element_type) const;
SymbolTable& symbols_;
diag::List& diagnostics_;
SemHelper& sem_;
};
} // namespace tint::resolver
#endif // SRC_TINT_RESOLVER_VALIDATOR_H_

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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/validator.h"
#include "gmock/gmock.h"
#include "src/tint/resolver/validator_test_helper.h"
#include "src/tint/sem/atomic_type.h"
namespace tint::resolver {
namespace {
using ValidatorIsStorableTest = ValidatorTest;
TEST_F(ValidatorIsStorableTest, Void) {
EXPECT_FALSE(v()->IsStorable(create<sem::Void>()));
}
TEST_F(ValidatorIsStorableTest, Scalar) {
EXPECT_TRUE(v()->IsStorable(create<sem::Bool>()));
EXPECT_TRUE(v()->IsStorable(create<sem::I32>()));
EXPECT_TRUE(v()->IsStorable(create<sem::U32>()));
EXPECT_TRUE(v()->IsStorable(create<sem::F32>()));
}
TEST_F(ValidatorIsStorableTest, Vector) {
EXPECT_TRUE(v()->IsStorable(create<sem::Vector>(create<sem::I32>(), 2u)));
EXPECT_TRUE(v()->IsStorable(create<sem::Vector>(create<sem::I32>(), 3u)));
EXPECT_TRUE(v()->IsStorable(create<sem::Vector>(create<sem::I32>(), 4u)));
EXPECT_TRUE(v()->IsStorable(create<sem::Vector>(create<sem::U32>(), 2u)));
EXPECT_TRUE(v()->IsStorable(create<sem::Vector>(create<sem::U32>(), 3u)));
EXPECT_TRUE(v()->IsStorable(create<sem::Vector>(create<sem::U32>(), 4u)));
EXPECT_TRUE(v()->IsStorable(create<sem::Vector>(create<sem::F32>(), 2u)));
EXPECT_TRUE(v()->IsStorable(create<sem::Vector>(create<sem::F32>(), 3u)));
EXPECT_TRUE(v()->IsStorable(create<sem::Vector>(create<sem::F32>(), 4u)));
}
TEST_F(ValidatorIsStorableTest, Matrix) {
auto* vec2 = create<sem::Vector>(create<sem::F32>(), 2u);
auto* vec3 = create<sem::Vector>(create<sem::F32>(), 3u);
auto* vec4 = create<sem::Vector>(create<sem::F32>(), 4u);
EXPECT_TRUE(v()->IsStorable(create<sem::Matrix>(vec2, 2u)));
EXPECT_TRUE(v()->IsStorable(create<sem::Matrix>(vec2, 3u)));
EXPECT_TRUE(v()->IsStorable(create<sem::Matrix>(vec2, 4u)));
EXPECT_TRUE(v()->IsStorable(create<sem::Matrix>(vec3, 2u)));
EXPECT_TRUE(v()->IsStorable(create<sem::Matrix>(vec3, 3u)));
EXPECT_TRUE(v()->IsStorable(create<sem::Matrix>(vec3, 4u)));
EXPECT_TRUE(v()->IsStorable(create<sem::Matrix>(vec4, 2u)));
EXPECT_TRUE(v()->IsStorable(create<sem::Matrix>(vec4, 3u)));
EXPECT_TRUE(v()->IsStorable(create<sem::Matrix>(vec4, 4u)));
}
TEST_F(ValidatorIsStorableTest, Pointer) {
auto* ptr = create<sem::Pointer>(
create<sem::I32>(), ast::StorageClass::kPrivate, ast::Access::kReadWrite);
EXPECT_FALSE(v()->IsStorable(ptr));
}
TEST_F(ValidatorIsStorableTest, Atomic) {
EXPECT_TRUE(v()->IsStorable(create<sem::Atomic>(create<sem::I32>())));
EXPECT_TRUE(v()->IsStorable(create<sem::Atomic>(create<sem::U32>())));
}
TEST_F(ValidatorIsStorableTest, ArraySizedOfStorable) {
auto* arr = create<sem::Array>(create<sem::I32>(), 5u, 4u, 20u, 4u, 4u);
EXPECT_TRUE(v()->IsStorable(arr));
}
TEST_F(ValidatorIsStorableTest, ArrayUnsizedOfStorable) {
auto* arr = create<sem::Array>(create<sem::I32>(), 0u, 4u, 4u, 4u, 4u);
EXPECT_TRUE(v()->IsStorable(arr));
}
} // namespace
} // namespace tint::resolver

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// Copyright 2022 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/validator_test_helper.h"
#include <memory>
namespace tint::resolver {
TestHelper::TestHelper()
: validator_(
std::make_unique<Validator>(this->Symbols(), this->Diagnostics())) {}
TestHelper::~TestHelper() = default;
} // namespace tint::resolver

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// Copyright 2022 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.
#ifndef SRC_TINT_RESOLVER_VALIDATOR_TEST_HELPER_H_
#define SRC_TINT_RESOLVER_VALIDATOR_TEST_HELPER_H_
#include <memory>
#include "gtest/gtest.h"
#include "src/tint/program_builder.h"
#include "src/tint/resolver/validator.h"
namespace tint::resolver {
/// Helper class for testing
class TestHelper : public ProgramBuilder {
public:
/// Constructor
TestHelper();
/// Destructor
~TestHelper() override;
/// @return a pointer to the Validator
Validator* v() const { return validator_.get(); }
private:
std::unique_ptr<Validator> validator_;
};
class ValidatorTest : public TestHelper, public testing::Test {};
} // namespace tint::resolver
#endif // SRC_TINT_RESOLVER_VALIDATOR_TEST_HELPER_H_