blob: 5844d962094407483a6956bd0f17c20ee0b45e3d [file] [log] [blame]
// Copyright 2022 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef SRC_TINT_LANG_CORE_CONSTANT_COMPOSITE_H_
#define SRC_TINT_LANG_CORE_CONSTANT_COMPOSITE_H_
#include "src/tint/lang/core/constant/value.h"
#include "src/tint/lang/core/number.h"
#include "src/tint/lang/core/type/type.h"
#include "src/tint/utils/containers/vector.h"
#include "src/tint/utils/math/hash.h"
#include "src/tint/utils/rtti/castable.h"
namespace tint::core::constant {
/// Composite holds a number of mixed child values.
/// Composite may be of a vector, matrix, array or structure type.
/// If each element is the same type and value, then a Splat would be a more efficient constant
/// implementation. Use CreateComposite() to create the appropriate type.
class Composite : public Castable<Composite, Value> {
public:
/// Constructor
/// @param t the compsite type
/// @param els the composite elements
/// @param all_0 true if all elements are 0
/// @param any_0 true if any element is 0
Composite(const core::type::Type* t, VectorRef<const Value*> els, bool all_0, bool any_0);
~Composite() override;
/// @copydoc Value::Type()
const core::type::Type* Type() const override { return type; }
/// @copydoc Value::Index()
const Value* Index(size_t i) const override {
return i < elements.Length() ? elements[i] : nullptr;
}
/// @copydoc Value::NumElements()
size_t NumElements() const override { return elements.Length(); }
/// @copydoc Value::AllZero()
bool AllZero() const override { return all_zero; }
/// @copydoc Value::AnyZero()
bool AnyZero() const override { return any_zero; }
/// @copydoc Value::Hash()
size_t Hash() const override { return hash; }
/// Clones the constant into the provided context
/// @param ctx the clone context
/// @returns the cloned node
const Composite* Clone(CloneContext& ctx) const override;
/// The composite type
core::type::Type const* const type;
/// The composite elements
const Vector<const Value*, 4> elements;
/// True if all elements are zero
const bool all_zero;
/// True if any element is zero
const bool any_zero;
/// The hash of the composite
const size_t hash;
protected:
/// @copydoc Value::InternalValue()
std::variant<std::monostate, AInt, AFloat> InternalValue() const override { return {}; }
private:
size_t CalcHash() {
auto h = tint::Hash(type, all_zero, any_zero);
for (auto* el : elements) {
h = HashCombine(h, el->Hash());
}
return h;
}
};
} // namespace tint::core::constant
#endif // SRC_TINT_LANG_CORE_CONSTANT_COMPOSITE_H_