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//! This module introduces struct [`SpeedObjects`], which manages definitions and events of spacing change.
use std::collections::{BTreeMap, HashMap, btree_map::Entry};
use strict_num_extended::PositiveF64;
use crate::bms::{
command::StringValue,
parse::{Result, prompt::ChannelDuplication},
prelude::*,
};
#[derive(Debug, Default, Clone, PartialEq, Eq)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
/// This aggregate manages definitions and events of spacing change.
pub struct SpeedObjects {
/// Spacing change definitions, indexed by [`ObjId`]. `#SPEED[01-ZZ]`
pub speed_defs: HashMap<ObjId, StringValue<PositiveF64>>,
/// The spacing factors corresponding to the id of the spacing change object.
pub speed_factor_changes: BTreeMap<ObjTime, SpeedObj>,
}
impl SpeedObjects {
/// Adds a new spacing factor change object to the notes.
///
/// # Errors
///
/// Returns [`ParseWarning`] if a conflict is found and the
/// provided [`Prompter`] decides to treat it as an error.
pub fn push_speed_factor_change(
&mut self,
speed_factor_change: SpeedObj,
prompt_handler: &impl Prompter,
) -> Result<()> {
match self.speed_factor_changes.entry(speed_factor_change.time) {
Entry::Vacant(entry) => {
entry.insert(speed_factor_change);
Ok(())
}
Entry::Occupied(mut entry) => {
let existing = entry.get();
prompt_handler
.handle_channel_duplication(ChannelDuplication::SpeedFactorChangeEvent {
time: speed_factor_change.time,
older: existing,
newer: &speed_factor_change,
})
.apply_channel(
entry.get_mut(),
speed_factor_change.clone(),
speed_factor_change.time,
Channel::Speed,
)
}
}
}
}