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#pragma once
#include "Value.h"
namespace actions {
namespace expression {
using FunctionImplementation = std::function<Value(const SCP_vector<Value>& parameters)>;
struct FunctionDefinition {
SCP_string name;
SCP_vector<ValueType> parameterTypes;
ValueType returnType;
FunctionImplementation implementation;
};
class FunctionManager {
public:
// This type is supposed to be global so it may not be copied
FunctionManager(const FunctionManager&) = delete;
FunctionManager& operator=(const FunctionManager&) = delete;
FunctionManager(FunctionManager&&) noexcept = default;
FunctionManager& operator=(FunctionManager&&) noexcept = default;
void addOperator(const SCP_string& name,
std::initializer_list<ValueType> parameterTypes,
ValueType returnType,
FunctionImplementation implementation);
const FunctionDefinition* findOperator(const SCP_string& name, const SCP_vector<ValueType>& parameterTypes) const;
static const FunctionManager& instance();
private:
FunctionManager();
SCP_unordered_map<SCP_string, SCP_vector<FunctionDefinition>> m_operators;
};
} // namespace expression
} // namespace actions
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