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/*
* AquaVM Workflow Engine
*
* Copyright (C) 2024 Fluence DAO
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation version 3 of the
* License.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
use super::*;
/// Tracks lens of data_keeper.result_trace to build resulted Par state at the end.
#[derive(Debug, Default, Clone)]
pub(super) struct ParBuilder {
saved_states_count: usize,
left_subgraph_size: usize,
right_subgraph_size: usize,
}
impl ParBuilder {
// StateInserter here needs to guaranteed that ParBuilder creates after it,
// it must be so to right track a left subgraph size
pub(super) fn from_keeper(data_keeper: &DataKeeper, _: &StateInserter) -> Self {
let saved_states_count = data_keeper.result_states_count();
Self {
saved_states_count,
left_subgraph_size: 0,
right_subgraph_size: 0,
}
}
pub(super) fn track(&mut self, data_keeper: &DataKeeper, subgraph_type: SubgraphType) {
let prev_states_count = self.saved_states_count;
let states_count = data_keeper.result_states_count();
let resulted_states_count = states_count - prev_states_count;
match subgraph_type {
SubgraphType::Left => self.left_subgraph_size = resulted_states_count,
SubgraphType::Right => self.right_subgraph_size = resulted_states_count,
}
self.saved_states_count = data_keeper.result_trace.len();
}
pub(super) fn build(self) -> ExecutedState {
// TODO: check that usize could be converted into u32
ExecutedState::par(self.left_subgraph_size, self.right_subgraph_size)
}
}