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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* Copyright (c) 2020 Kohei Yoshida
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
************************************************************************/
#include <ixion/model_context.hpp>
#include <ixion/macros.hpp>
#include <ixion/formula_name_resolver.hpp>
#include <ixion/formula.hpp>
#include <iostream>
using namespace std;
int main(int argc, char** argv)
{
ixion::model_context cxt;
// First and foremost, insert a sheet.
cxt.append_sheet("MySheet");
// Now, populate it with some numeric values in A1:A10.
for (ixion::abs_address_t pos(0, 0, 0); pos.row <= 9; ++pos.row)
{
double value = pos.row + 1.0; // Set the row position + 1 as the cell value.
cxt.set_numeric_cell(pos, value);
}
// Insert a string value into B2.
ixion::abs_address_t B2(0, 1, 1);
std::string s = "This cell contains a string value.";
cxt.set_string_cell(B2, s);
// Insert a literal string value into B3.
ixion::abs_address_t B3(0, 2, 1);
cxt.set_string_cell(B3, "This too contains a string value.");
// Insert a string value into B4 via string identifier.
ixion::string_id_t sid = cxt.add_string("Yet another string value.");
ixion::abs_address_t B4(0, 3, 1);
cxt.set_string_cell(B4, sid);
// Now, let's insert a formula into A11 to sum up values in A1:A10.
// Tokenize formula string first.
std::unique_ptr<ixion::formula_name_resolver> resolver =
ixion::formula_name_resolver::get(ixion::formula_name_resolver_t::excel_a1, &cxt);
ixion::abs_address_t A11(0, 10, 0);
ixion::formula_tokens_t tokens = ixion::parse_formula_string(cxt, A11, *resolver, "SUM(A1:A10)");
// Set the tokens into the model.
const ixion::formula_cell* cell = cxt.set_formula_cell(A11, std::move(tokens));
// Register this formula cell for automatic dependency tracking.
ixion::register_formula_cell(cxt, A11, cell);
// Build a set of modified cells, to determine which formula cells depend
// on them eithe directly or indirectly. Since we are performing initial
// calculation, we can flag the entire sheet to be "modified" to trigger
// all formula cells to be calculated.
ixion::rc_size_t sheet_size = cxt.get_sheet_size();
ixion::abs_range_t entire_sheet(0, 0, 0, sheet_size.row, sheet_size.column); // sheet, row, column, row span, column span
ixion::abs_range_set_t modified_cells{entire_sheet};
// Determine formula cells that need re-calculation given the modified cells.
// There should be only one formula cell in this example.
std::vector<ixion::abs_range_t> dirty_cells = ixion::query_and_sort_dirty_cells(cxt, modified_cells);
cout << "number of dirty cells: " << dirty_cells.size() << endl;
cout << "dirty cell: " << dirty_cells[0] << endl;
// Now perform calculation.
ixion::calculate_sorted_cells(cxt, dirty_cells, 0);
double value = cxt.get_numeric_value(A11);
cout << "value of A11: " << value << endl;
// Insert a new formula to A11.
tokens = ixion::parse_formula_string(cxt, A11, *resolver, "AVERAGE(A1:A10)");
// Before overwriting, make sure to UN-register the old cell.
ixion::unregister_formula_cell(cxt, A11);
// Set and register the new formula cell.
cell = cxt.set_formula_cell(A11, std::move(tokens));
ixion::register_formula_cell(cxt, A11, cell);
// This time, we know that none of the cell values have changed, but the
// formula A11 is updated & needs recalculation.
ixion::abs_range_set_t modified_formula_cells{A11};
dirty_cells = ixion::query_and_sort_dirty_cells(cxt, ixion::abs_range_set_t(), &modified_formula_cells);
cout << "number of dirty cells: " << dirty_cells.size() << endl;
// Perform calculation again.
ixion::calculate_sorted_cells(cxt, dirty_cells, 0);
value = cxt.get_numeric_value(A11);
cout << "value of A11: " << value << endl;
// Overwrite A10 with a formula cell with no references.
ixion::abs_address_t A10(0, 9, 0);
tokens = ixion::parse_formula_string(cxt, A10, *resolver, "(100+50)/2");
cxt.set_formula_cell(A10, std::move(tokens));
// No need to register this cell since it does not reference any other cells.
modified_formula_cells = { A10 };
dirty_cells = ixion::query_and_sort_dirty_cells(cxt, ixion::abs_range_set_t(), &modified_formula_cells);
cout << "number of dirty cells: " << dirty_cells.size() << endl;
ixion::calculate_sorted_cells(cxt, dirty_cells, 0);
value = cxt.get_numeric_value(A10);
cout << "value of A10: " << value << endl;
value = cxt.get_numeric_value(A11);
cout << "value of A11: " << value << endl;
return EXIT_SUCCESS;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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