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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::Instruction;
use super::IterableValue;
use std::rc::Rc;
pub(crate) struct FoldState<'i> {
pub(crate) iterable: IterableValue,
pub(crate) iterable_type: IterableType,
// true of iterator exhausted and reverse execution started
pub(crate) back_iteration_started: bool,
pub(crate) instr_head: Rc<Instruction<'i>>,
pub(crate) last_instr_head: Option<Rc<Instruction<'i>>>,
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub(crate) enum IterableType {
Scalar,
Stream(u32),
}
impl<'i> FoldState<'i> {
pub(crate) fn from_iterable(
iterable: IterableValue,
iterable_type: IterableType,
instr_head: Rc<Instruction<'i>>,
last_instr_head: Option<Rc<Instruction<'i>>>,
) -> Self {
Self {
iterable,
iterable_type,
back_iteration_started: false,
instr_head,
last_instr_head,
}
}
}