blt-gp/src/generators.cpp

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/*
* <Short Description>
* Copyright (C) 2024 Brett Terpstra
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
#include <blt/gp/generators.h>
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#include <blt/gp/program.h>
#include <stack>
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namespace blt::gp
{
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struct stack
{
blt::gp::operator_id id;
blt::size_t depth;
};
static inline std::stack<stack> get_base_generator(gp_program& program)
{
std::stack<stack> tree_generator;
auto& system = program.get_typesystem();
// select a type which has a non-empty set of non-terminals
type base_type;
do
{
base_type = system.select_type(program.get_random());
} while (program.get_type_non_terminals(base_type.id()).empty());
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tree_generator.push(stack{program.select_non_terminal(base_type.id()), 0});
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return tree_generator;
}
template<typename Func>
tree_t create_tree(Func, gp_program& program, blt::size_t, blt::size_t)
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{
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std::stack<stack> tree_generator = get_base_generator(program);
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tree_t tree;
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while (!tree_generator.empty())
{
}
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return tree;
}
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tree_t grow_generator_t::generate(gp_program& program, blt::size_t min_depth, blt::size_t max_depth)
{
return create_tree([]() {
}, program, min_depth, max_depth);
}
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tree_t full_generator_t::generate(gp_program& program, blt::size_t min_depth, blt::size_t max_depth)
{
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return create_tree([]() {
}, program, min_depth, max_depth);
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}
}