/*
* Copyright 2021 Google LLC
*
* Use of this source code is governed by a BSD - style license that can be
* found in the LICENSE file .
*/
#ifndef SKSL_CONSTRUCTOR_MATRIX_RESIZE
#define SKSL_CONSTRUCTOR_MATRIX_RESIZE
#include "src/sksl/SkSLPosition.h"
#include "src/sksl/ir/SkSLConstructor.h"
#include "src/sksl/ir/SkSLExpression.h"
#include "src/sksl/ir/SkSLIRNode.h"
#include <memory>
#include <optional>
#include <utility>
namespace SkSL {
class Context;
class Type;
/**
* Represents the construction of a matrix resize operation , such as ` mat4x4 ( myMat2x2 ) ` .
*
* These always contain exactly 1 matrix of non - matching size . Cells that aren ' t present in the
* input matrix are populated with the identity matrix .
*/
class ConstructorMatrixResize final : public SingleArgumentConstructor {
public :
inline static constexpr Kind kIRNodeKind = Kind::kConstructorMatrixResize;
ConstructorMatrixResize(Position pos, const Type& type, std::unique_ptr<Expression> arg)
: INHERITED(pos, kIRNodeKind, &type, std::move(arg)) {}
static std::unique_ptr<Expression> Make(const Context& context,
Position pos,
const Type& type,
std::unique_ptr<Expression> arg);
std::unique_ptr<Expression> clone(Position pos) const override {
return std::make_unique<ConstructorMatrixResize>(pos, this ->type(), argument()->clone());
}
bool supportsConstantValues() const override { return true ; }
std::optional<double > getConstantValue(int n) const override;
private :
using INHERITED = SingleArgumentConstructor;
};
} // namespace SkSL
#endif
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