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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#ifndef INCLUDED_IXION_FORMULA_PARSER_HPP
#define INCLUDED_IXION_FORMULA_PARSER_HPP
#include "ixion/exceptions.hpp"
#include "ixion/formula_tokens.hpp"
#include "lexer_tokens.hpp"
#include <string>
namespace ixion {
class formula_name_resolver;
class model_context;
/**
* Class formula_parser parses a series of primitive (or lexer) tokens
* passed on from the lexer, and turn them into a series of formula tokens.
* It also picks up a list of cells that it depends on.
*/
class formula_parser
{
formula_parser() = delete;
formula_parser(const formula_parser&) = delete;
formula_parser& operator=(const formula_parser&) = delete;
public:
class parse_error : public general_error
{
public:
parse_error(const ::std::string& msg);
};
formula_parser(const lexer_tokens_t& tokens, model_context& cxt, const formula_name_resolver& resolver);
~formula_parser();
void set_origin(const abs_address_t& pos);
void parse();
formula_tokens_t& get_tokens();
private:
void primitive();
void name();
void literal();
void value();
void less();
void greater();
const lexer_token& get_token() const;
bool has_token() const;
bool has_next() const;
void next();
void prev();
private:
lexer_tokens_t::const_iterator m_itr_cur;
lexer_tokens_t::const_iterator m_itr_end;
const lexer_tokens_t& m_tokens; // lexer tokens of this expression
model_context& m_context;
formula_tokens_t m_formula_tokens;
abs_address_t m_pos; // reference position (usually current cell). always absolute.
const formula_name_resolver& m_resolver;
};
}
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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