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// Copyright 2019 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <memory>
#include <string>
#include <string_view>
#include <variant>
#include <vector>
#include "Common/CommonTypes.h"
#include "InputCommon/ControlReference/ExpressionParser.h"
namespace ciface::ExpressionParser
{
constexpr ControlState CONDITION_THRESHOLD = 0.5;
class FunctionExpression : public Expression
{
public:
struct ArgumentsAreValid
{
};
struct ExpectedArguments
{
std::string text;
};
using ArgumentValidation = std::variant<ArgumentsAreValid, ExpectedArguments>;
int CountNumControls() const override;
void UpdateReferences(ControlEnvironment& env) override;
ArgumentValidation SetArguments(std::vector<std::unique_ptr<Expression>>&& args);
void SetValue(ControlState value) override;
protected:
virtual ArgumentValidation
ValidateArguments(const std::vector<std::unique_ptr<Expression>>& args) = 0;
Expression& GetArg(u32 number);
const Expression& GetArg(u32 number) const;
u32 GetArgCount() const;
private:
std::vector<std::unique_ptr<Expression>> m_args;
};
std::unique_ptr<FunctionExpression> MakeFunctionExpression(std::string_view name);
} // namespace ciface::ExpressionParser
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