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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 "function_table.hpp"
#include "basic_functions.hpp"
#include <boost/bind.hpp>
#include <boost/format.hpp>
#include <map>
using namespace uhd::rfnoc::nocscript;
class function_table_impl : public function_table
{
public:
struct function_info
{
expression::type_t return_type;
function_ptr function;
function_info() : return_type(expression::TYPE_INT){};
function_info(
const expression::type_t return_type_, const function_ptr& function_)
: return_type(return_type_), function(function_){};
};
// Should be an unordered_map... sigh, we'll get to C++11 someday.
typedef std::map<std::string,
std::map<expression_function::argtype_list_type, function_info>>
table_type;
/************************************************************************
* Structors
***********************************************************************/
function_table_impl()
{
_REGISTER_ALL_FUNCS();
}
~function_table_impl(){};
/************************************************************************
* Interface implementation
***********************************************************************/
bool function_exists(const std::string& name) const
{
return bool(_table.count(name));
}
bool function_exists(const std::string& name,
const expression_function::argtype_list_type& arg_types) const
{
table_type::const_iterator it = _table.find(name);
return (it != _table.end()) and bool(it->second.count(arg_types));
}
expression::type_t get_type(const std::string& name,
const expression_function::argtype_list_type& arg_types) const
{
table_type::const_iterator it = _table.find(name);
if (it == _table.end() or (it->second.find(arg_types) == it->second.end())) {
throw uhd::syntax_error(
str(boost::format("Unable to retrieve return value for function %s")
% expression_function::to_string(name, arg_types)));
}
return it->second.find(arg_types)->second.return_type;
}
expression_literal eval(const std::string& name,
const expression_function::argtype_list_type& arg_types,
expression_container::expr_list_type& arguments)
{
if (not function_exists(name, arg_types)) {
throw uhd::syntax_error(
str(boost::format("Cannot eval() function %s, not a known signature")
% expression_function::to_string(name, arg_types)));
}
return _table[name][arg_types].function(arguments);
}
void register_function(const std::string& name,
const function_table::function_ptr& ptr,
const expression::type_t return_type,
const expression_function::argtype_list_type& sig)
{
_table[name][sig] = function_info(return_type, ptr);
}
private:
table_type _table;
};
function_table::sptr function_table::make()
{
return sptr(new function_table_impl());
}
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