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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/.
*/
#include "formula_parser.hpp"
#include "ixion/formula_name_resolver.hpp"
#include "formula_functions.hpp"
#include <iostream>
#include <sstream>
namespace ixion {
namespace {
class ref_error : public general_error
{
public:
ref_error(const std::string& msg) :
general_error(msg) {}
};
}
// ----------------------------------------------------------------------------
formula_parser::parse_error::parse_error(const std::string& msg) :
general_error(msg) {}
// ----------------------------------------------------------------------------
formula_parser::formula_parser(
const lexer_tokens_t& tokens, model_context& cxt, const formula_name_resolver& resolver) :
m_itr_cur(tokens.end()),
m_itr_end(tokens.end()),
m_tokens(tokens),
m_context(cxt),
m_resolver(resolver)
{
}
formula_parser::~formula_parser()
{
}
void formula_parser::set_origin(const abs_address_t& pos)
{
m_pos = pos;
}
void formula_parser::parse()
{
for (m_itr_cur = m_tokens.begin(); has_token(); next())
{
switch (get_token().opcode)
{
case lexer_opcode_t::array_open:
case lexer_opcode_t::array_close:
case lexer_opcode_t::open:
case lexer_opcode_t::close:
case lexer_opcode_t::plus:
case lexer_opcode_t::minus:
case lexer_opcode_t::multiply:
case lexer_opcode_t::exponent:
case lexer_opcode_t::concat:
case lexer_opcode_t::equal:
case lexer_opcode_t::divide:
case lexer_opcode_t::sep:
case lexer_opcode_t::array_row_sep:
primitive();
break;
case lexer_opcode_t::name:
name();
break;
case lexer_opcode_t::string:
literal();
break;
case lexer_opcode_t::value:
value();
break;
case lexer_opcode_t::less:
less();
break;
case lexer_opcode_t::greater:
greater();
break;
default:
;
}
}
}
formula_tokens_t& formula_parser::get_tokens()
{
return m_formula_tokens;
}
void formula_parser::primitive()
{
fopcode_t foc = fop_unknown;
switch (get_token().opcode)
{
case lexer_opcode_t::close:
foc = fop_close;
break;
case lexer_opcode_t::divide:
foc = fop_divide;
break;
case lexer_opcode_t::minus:
foc = fop_minus;
break;
case lexer_opcode_t::multiply:
foc = fop_multiply;
break;
case lexer_opcode_t::exponent:
foc = fop_exponent;
break;
case lexer_opcode_t::concat:
foc = fop_concat;
break;
case lexer_opcode_t::equal:
foc = fop_equal;
break;
case lexer_opcode_t::open:
foc = fop_open;
break;
case lexer_opcode_t::plus:
foc = fop_plus;
break;
case lexer_opcode_t::sep:
foc = fop_sep;
break;
case lexer_opcode_t::array_row_sep:
foc = fop_array_row_sep;
break;
case lexer_opcode_t::array_open:
foc = fop_array_open;
break;
case lexer_opcode_t::array_close:
foc = fop_array_close;
break;
default:
throw parse_error("unknown primitive token received");
}
m_formula_tokens.emplace_back(foc);
}
void formula_parser::name()
{
std::string_view name = std::get<std::string_view>(get_token().value);
formula_name_t fn = m_resolver.resolve(name, m_pos);
switch (fn.type)
{
case formula_name_t::cell_reference:
m_formula_tokens.emplace_back(std::get<address_t>(fn.value));
break;
case formula_name_t::range_reference:
{
m_formula_tokens.emplace_back(std::get<range_t>(fn.value));
break;
}
case formula_name_t::table_reference:
{
table_t table;
formula_name_t::table_type src_table = std::get<formula_name_t::table_type>(fn.value);
table.name = m_context.add_string(src_table.name);
table.column_first = m_context.add_string(src_table.column_first);
table.column_last = m_context.add_string(src_table.column_last);
table.areas = src_table.areas;
m_formula_tokens.emplace_back(table);
break;
}
case formula_name_t::function:
m_formula_tokens.emplace_back(std::get<formula_function_t>(fn.value));
break;
case formula_name_t::named_expression:
m_formula_tokens.emplace_back(std::string{name});
break;
default:
{
std::ostringstream os;
os << "failed to resolve a name token '" << name << "'.";
throw parse_error(os.str());
}
}
}
void formula_parser::literal()
{
string_id_t sid = m_context.add_string(std::get<std::string_view>(get_token().value));
m_formula_tokens.emplace_back(sid);
}
void formula_parser::value()
{
m_formula_tokens.emplace_back(std::get<double>(get_token().value));
}
void formula_parser::less()
{
if (has_next())
{
next();
switch (get_token().opcode)
{
case lexer_opcode_t::equal:
m_formula_tokens.emplace_back(fop_less_equal);
return;
case lexer_opcode_t::greater:
m_formula_tokens.emplace_back(fop_not_equal);
return;
default:
;
}
prev();
}
m_formula_tokens.emplace_back(fop_less);
}
void formula_parser::greater()
{
if (has_next())
{
next();
if (get_token().opcode == lexer_opcode_t::equal)
{
m_formula_tokens.emplace_back(fop_greater_equal);
return;
}
prev();
}
m_formula_tokens.emplace_back(fop_greater);
}
const lexer_token& formula_parser::get_token() const
{
return *m_itr_cur;
}
bool formula_parser::has_token() const
{
return m_itr_cur != m_itr_end;
}
bool formula_parser::has_next() const
{
return (m_itr_cur+1) != m_itr_end;
}
void formula_parser::next()
{
++m_itr_cur;
}
void formula_parser::prev()
{
--m_itr_cur;
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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