blob: 9994058f6e00dc62bb502a87e2b803e7ae56c52e [file] [log] [blame]
/*
* 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_METHODREFERENCE
#define SKSL_METHODREFERENCE
#include "src/sksl/SkSLContext.h"
#include "src/sksl/ir/SkSLExpression.h"
namespace SkSL {
class FunctionDeclaration;
/**
* An identifier referring to a method name, along with an instance for the call.
* This is an intermediate value: MethodReferences are always eventually replaced by FunctionCalls
* in valid programs.
*
* Method calls are only supported on effect-child types, and they all resolve to intrinsics
* prefixed with '$', and taking the 'self' object as the last parameter. For example:
*
* uniform shader child;
* ...
* child.eval(xy) --> $eval(xy, child)
*/
class MethodReference final : public Expression {
public:
inline static constexpr Kind kExpressionKind = Kind::kMethodReference;
MethodReference(const Context& context,
int line,
std::unique_ptr<Expression> self,
std::vector<const FunctionDeclaration*> functions)
: INHERITED(line, kExpressionKind, context.fTypes.fInvalid.get())
, fSelf(std::move(self))
, fFunctions(std::move(functions)) {}
std::unique_ptr<Expression>& self() { return fSelf; }
const std::unique_ptr<Expression>& self() const { return fSelf; }
const std::vector<const FunctionDeclaration*>& functions() const { return fFunctions; }
bool hasProperty(Property property) const override { return false; }
std::unique_ptr<Expression> clone() const override {
return std::unique_ptr<Expression>(new MethodReference(
fLine, this->self()->clone(), this->functions(), &this->type()));
}
std::string description() const override {
return "<method>";
}
private:
MethodReference(int line,
std::unique_ptr<Expression> self,
std::vector<const FunctionDeclaration*> functions,
const Type* type)
: INHERITED(line, kExpressionKind, type)
, fSelf(std::move(self))
, fFunctions(std::move(functions)) {}
std::unique_ptr<Expression> fSelf;
std::vector<const FunctionDeclaration*> fFunctions;
using INHERITED = Expression;
};
} // namespace SkSL
#endif