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/*
* Copyright (C) 2024 Linux Studio Plugins Project <https://lsp-plug.in/>
* (C) 2024 Vladimir Sadovnikov <sadko4u@gmail.com>
*
* This file is part of lsp-runtime-lib
* Created on: 16 сент. 2019 г.
*
* lsp-runtime-lib is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* lsp-runtime-lib is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with lsp-runtime-lib. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef LSP_PLUG_IN_EXPR_RESOLVER_H_
#define LSP_PLUG_IN_EXPR_RESOLVER_H_
#include <lsp-plug.in/runtime/version.h>
#include <lsp-plug.in/expr/types.h>
#include <lsp-plug.in/expr/functions.h>
namespace lsp
{
namespace expr
{
/**
* This is a class that resolves the actual value by the variable name.
* By default, it resolves all values as NULLs
*
*/
class Resolver
{
public:
explicit Resolver();
Resolver(const Resolver &) = delete;
Resolver(Resolver &&) = delete;
virtual ~Resolver();
Resolver & operator = (const Resolver &) = delete;
Resolver & operator = (Resolver &&) = delete;
protected:
stdfunc_t find_std_func(const char *name);
public:
/**
* Resolve array variable by name and indexes
* @param value pointer to value to store the data
* @param name array variable name
* @param num_indexes number of indexes in array
* @param indexes pointer to array containing all index values
* @return status of operation
*/
virtual status_t resolve(value_t *value, const char *name, size_t num_indexes = 0, const ssize_t *indexes = NULL);
/**
* Resolve array variable by name and indexes
* @param value pointer to value to store the data
* @param name array variable name
* @param num_indexes number of indexes in array
* @param indexes pointer to array containing all index values
* @return status of operation
*/
virtual status_t resolve(value_t *value, const LSPString *name, size_t num_indexes = 0, const ssize_t *indexes = NULL);
/**
* Perform function call
* @param value destination pointer to store the value
* @param name name of the function
* @param num_args number of arguments
* @param args list of arguments (may be NULL)
* @return status of operation
*/
virtual status_t call(value_t *value, const char *name, size_t num_args, const value_t *args = NULL);
/**
* Perform function call
* @param value destination pointer to store the value
* @param name name of the function
* @param num_args number of arguments
* @param args list of arguments (may be NULL)
* @return status of operation
*/
virtual status_t call(value_t *value, const LSPString *name, size_t num_args, const value_t *args = NULL);
};
} /* namespace expr */
} /* namespace lsp */
#endif /* LSP_PLUG_IN_EXPR_RESOLVER_H_ */
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