blob: 47e1ea2fd1dd37ea2328a50401f9232fd969f469 [file] [log] [blame]
// 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/type/array.h"
#include <string>
#include "src/tint/debug.h"
#include "src/tint/symbol_table.h"
#include "src/tint/type/manager.h"
#include "src/tint/type/texture_dimension.h"
#include "src/tint/utils/hash.h"
#include "src/tint/utils/string_stream.h"
TINT_INSTANTIATE_TYPEINFO(tint::type::Array);
namespace tint::type {
namespace {
type::Flags FlagsFrom(const Type* element, const ArrayCount* count) {
type::Flags flags;
// Only constant-expression sized arrays are constructible
if (count->Is<ConstantArrayCount>()) {
if (element->IsConstructible()) {
flags.Add(Flag::kConstructable);
}
if (element->HasCreationFixedFootprint()) {
flags.Add(Flag::kCreationFixedFootprint);
}
}
if (!count->Is<RuntimeArrayCount>()) {
if (element->HasFixedFootprint()) {
flags.Add(Flag::kFixedFootprint);
}
}
return flags;
}
} // namespace
const char* const Array::kErrExpectedConstantCount =
"array size is an override-expression, when expected a constant-expression.\n"
"Was the SubstituteOverride transform run?";
Array::Array(const Type* element,
const ArrayCount* count,
uint32_t align,
uint32_t size,
uint32_t stride,
uint32_t implicit_stride)
: Base(utils::Hash(utils::TypeInfo::Of<Array>().full_hashcode, count, align, size, stride),
FlagsFrom(element, count)),
element_(element),
count_(count),
align_(align),
size_(size),
stride_(stride),
implicit_stride_(implicit_stride) {
TINT_ASSERT(Type, element_);
}
bool Array::Equals(const UniqueNode& other) const {
if (auto* o = other.As<Array>()) {
// Note: implicit_stride is not part of the type_name string as this is
// derived from the element type
return o->element_ == element_ && o->count_ == count_ && o->align_ == align_ &&
o->size_ == size_ && o->stride_ == stride_;
}
return false;
}
std::string Array::FriendlyName() const {
utils::StringStream out;
if (!IsStrideImplicit()) {
out << "@stride(" << stride_ << ") ";
}
out << "array<" << element_->FriendlyName();
auto count_str = count_->FriendlyName();
if (!count_str.empty()) {
out << ", " << count_str;
}
out << ">";
return out.str();
}
uint32_t Array::Align() const {
return align_;
}
uint32_t Array::Size() const {
return size_;
}
TypeAndCount Array::Elements(const Type* /* type_if_invalid = nullptr */,
uint32_t count_if_invalid /* = 0 */) const {
uint32_t n = count_if_invalid;
if (auto* const_count = count_->As<ConstantArrayCount>()) {
n = const_count->value;
}
return {element_, n};
}
const Type* Array::Element(uint32_t index) const {
if (auto* count = count_->As<ConstantArrayCount>()) {
return index < count->value ? element_ : nullptr;
}
return element_;
}
Array* Array::Clone(CloneContext& ctx) const {
auto* elem_ty = element_->Clone(ctx);
auto* count = count_->Clone(ctx);
return ctx.dst.mgr->Get<Array>(elem_ty, count, align_, size_, stride_, implicit_stride_);
}
} // namespace tint::type