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//
// Copyright 2015 Ettus Research LLC
// Copyright 2018 Ettus Research, a National Instruments Company
//
// SPDX-License-Identifier: GPL-3.0-or-later
//
#include "expression.hpp"
#include <boost/function.hpp>
#include <boost/shared_ptr.hpp>
#include <vector>
#ifndef INCLUDED_LIBUHD_RFNOC_NOCSCRIPT_FUNCTABLE_HPP
# define INCLUDED_LIBUHD_RFNOC_NOCSCRIPT_FUNCTABLE_HPP
namespace uhd { namespace rfnoc { namespace nocscript {
class function_table
{
public:
typedef boost::shared_ptr<function_table> sptr;
typedef boost::function<expression_literal(expression_container::expr_list_type&)>
function_ptr;
static sptr make();
virtual ~function_table(){};
/*! Check if any function with a given name exists
*
* \returns True, if any function with name \p name is registered.
*/
virtual bool function_exists(const std::string& name) const = 0;
/*! Check if a function with a given name and list of argument types exists
*
* \returns True, if such a function is registered.
*/
virtual bool function_exists(const std::string& name,
const expression_function::argtype_list_type& arg_types) const = 0;
/*! Get the return type of a function with given name and argument type list
*
* \returns The function's return type
* \throws uhd::syntax_error if no such function is registered
*/
virtual expression::type_t get_type(const std::string& name,
const expression_function::argtype_list_type& arg_types) const = 0;
/*! Calls the function \p name with the argument list \p arguments
*
* \param arg_types A list of types for each argument
* \param arguments An expression list of the arguments
* \returns The return value of the called function
* \throws uhd::syntax_error if no such function is found
*/
virtual expression_literal eval(const std::string& name,
const expression_function::argtype_list_type& arg_types,
expression_container::expr_list_type& arguments) = 0;
/*! Register a new function
*
* \param name Name of the function (e.g. 'ADD')
* \param ptr Function object
* \param return_type The function's return value
* \param sig The function signature (list of argument types)
*/
virtual void register_function(const std::string& name,
const function_ptr& ptr,
const expression::type_t return_type,
const expression_function::argtype_list_type& sig) = 0;
};
}}} /* namespace uhd::rfnoc::nocscript */
#endif /* INCLUDED_LIBUHD_RFNOC_NOCSCRIPT_FUNCTABLE_HPP */
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