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* Copyright 2021 Google LLC
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#include "include/private/SkSLDefines.h"
#include "src/sksl/SkSLContext.h"
#include "src/sksl/ir/SkSLConstructor.h"
#include "src/sksl/ir/SkSLExpression.h"
#include <memory>
namespace SkSL {
* Represents the construction of a scalar cast, such as `float(intVariable)`.
* These always contain exactly 1 scalar of a differing type, and are never constant.
class ConstructorScalarCast final : public SingleArgumentConstructor {
static constexpr Kind kExpressionKind = Kind::kConstructorScalarCast;
ConstructorScalarCast(int offset, const Type& type, std::unique_ptr<Expression> arg)
: INHERITED(offset, kExpressionKind, &type, std::move(arg)) {}
// ConstructorScalarCast::Convert will typecheck and create scalar-constructor expressions.
// Reports errors via the ErrorReporter; returns null on error.
static std::unique_ptr<Expression> Convert(const Context& context,
int offset,
const Type& rawType,
ExpressionArray args);
// ConstructorScalarCast::Make casts a scalar expression. Casts that can be evaluated at
// compile-time will do so (e.g. `int(4.1)` --> `IntLiteral(4)`). Errors reported via SkASSERT.
static std::unique_ptr<Expression> Make(const Context& context,
int offset,
const Type& type,
std::unique_ptr<Expression> arg);
std::unique_ptr<Expression> clone() const override {
return std::make_unique<ConstructorScalarCast>(fOffset, this->type(), argument()->clone());
bool isCompileTimeConstant() const override {
// If this were a compile-time constant, we would have created a literal instead.
return false;
using INHERITED = SingleArgumentConstructor;
} // namespace SkSL