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use crate::engine::audio::events::AudioEventList;
use crate::engine::audio::interpreter::collector;
use crate::engine::audio::interpreter::driver::AudioInterpreter;
use crate::language::syntax::ast::{Statement, Value};
use anyhow::Result;
use std::sync::atomic::{AtomicUsize, Ordering};
static BG_WORKER_COUNTER: AtomicUsize = AtomicUsize::new(1);
impl AudioInterpreter {
pub fn execute_loop(&mut self, count: &Value, body: &[Statement]) -> Result<()> {
match count {
Value::Number(n) => {
let loop_count = (*n) as usize;
for i in 0..loop_count {
self.collect_events(body)?;
// If a break was signalled inside the body, consume flag and exit loop
if self.break_flag {
self.break_flag = false;
break;
}
}
Ok(())
}
Value::Identifier(ident) if ident == "pass" => {
// offline: run in-place per beat
if self.background_event_tx.is_none() {
let beat_secs = if self.bpm > 0.0 { 60.0 / self.bpm } else { 1.0 };
let interval_secs = beat_secs.max(0.001);
let mut iter_count: usize = 0;
let hard_iter_cap: usize = 100_000;
let start = self.cursor_time;
let render_target = self.special_vars.total_duration.max(1.0);
loop {
let before_cursor = self.cursor_time;
// Avoid nested beat emission when executing loop body repeatedly:
// suppress beat emission during inner collection so 'on beat'/'on bar'
// handlers are only executed by the outer/top-level collector.
let prev = self.suppress_beat_emit;
self.suppress_beat_emit = true;
let res = self.collect_events(body);
// restore previous flag even if collect_events returned an error
self.suppress_beat_emit = prev;
res?;
// Break signalled inside loop body -> exit pass loop
if self.break_flag {
self.break_flag = false;
break;
}
iter_count = iter_count.saturating_add(1);
let after_cursor = self.cursor_time;
// If the body advanced the cursor_time, we keep that (no extra gap).
// Otherwise advance by the interval (pass/beat) to avoid stalling.
if (after_cursor - before_cursor).abs() < f32::EPSILON {
self.cursor_time += interval_secs;
}
// Check schedule deadline (from "at X and during Y:")
if let Some(deadline) = self.schedule_deadline {
if self.cursor_time >= deadline {
break;
}
}
if self.cursor_time - start >= render_target { break; }
if iter_count > hard_iter_cap { break; }
}
return Ok(());
}
// live path handled elsewhere (spawning worker) in previous code paths
anyhow::bail!("Live background worker path should be handled earlier");
}
Value::Call { name, args } if name == "pass" => {
// treat as pass(ms) with offline synchronous behavior
let mut interval_ms: u64 = 1000;
if let Some(Value::Number(n)) = args.get(0) {
interval_ms = (*n) as u64;
}
let interval_secs = (interval_ms as f32) / 1000.0;
let mut iter_count: usize = 0;
let hard_iter_cap: usize = 100_000;
let start = self.cursor_time;
let render_target = self.special_vars.total_duration.max(1.0);
loop {
let before_cursor = self.cursor_time;
let prev = self.suppress_beat_emit;
self.suppress_beat_emit = true;
let res = self.collect_events(body);
self.suppress_beat_emit = prev;
res?;
// Break signalled inside loop body -> exit pass loop
if self.break_flag {
self.break_flag = false;
break;
}
iter_count = iter_count.saturating_add(1);
let after_cursor = self.cursor_time;
if (after_cursor - before_cursor).abs() < f32::EPSILON {
self.cursor_time += interval_secs;
}
// Check schedule deadline (from "at X and during Y:")
if let Some(deadline) = self.schedule_deadline {
if self.cursor_time >= deadline {
break;
}
}
if self.cursor_time - start >= render_target { break; }
if iter_count > hard_iter_cap { break; }
}
Ok(())
}
Value::Duration(duration) => {
// loop pass(duration): - interval based on DurationValue
let interval_secs = self.duration_to_seconds(duration)?;
let mut iter_count: usize = 0;
let hard_iter_cap: usize = 100_000;
let start = self.cursor_time;
let render_target = self.special_vars.total_duration.max(1.0);
loop {
let before_cursor = self.cursor_time;
let prev = self.suppress_beat_emit;
self.suppress_beat_emit = true;
let res = self.collect_events(body);
self.suppress_beat_emit = prev;
res?;
// Break signalled inside loop body -> exit pass loop
if self.break_flag {
self.break_flag = false;
break;
}
iter_count = iter_count.saturating_add(1);
let after_cursor = self.cursor_time;
if (after_cursor - before_cursor).abs() < f32::EPSILON {
self.cursor_time += interval_secs;
}
// Check schedule deadline (from "at X and during Y:")
if let Some(deadline) = self.schedule_deadline {
if self.cursor_time >= deadline {
break;
}
}
if self.cursor_time - start >= render_target { break; }
if iter_count > hard_iter_cap { break; }
}
Ok(())
}
Value::Null => {
// Indefinite loop: run until no further audio is produced or time limit hit
let start_time = self.cursor_time;
let time_limit = 60.0_f32;
loop {
let before_cursor = self.cursor_time;
let prev = self.suppress_beat_emit;
self.suppress_beat_emit = true;
let res = self.collect_events(body);
self.suppress_beat_emit = prev;
res?;
// Break signalled inside indefinite loop -> exit
if self.break_flag {
self.break_flag = false;
break;
}
if (self.cursor_time - before_cursor).abs() < f32::EPSILON { break; }
// Check schedule deadline (from "at X and during Y:")
if let Some(deadline) = self.schedule_deadline {
if self.cursor_time >= deadline {
break;
}
}
if self.cursor_time - start_time >= time_limit { break; }
}
Ok(())
}
other => anyhow::bail!("❌ Loop iterator must be a number, 'pass' or null, found: {:?}", other),
}
}
pub fn execute_for(&mut self, variable: &str, iterable: &Value, body: &[Statement]) -> Result<()> {
let items = match iterable {
Value::Array(arr) => arr.clone(),
Value::Identifier(ident) => {
if let Some(Value::Array(arr)) = self.variables.get(ident) { arr.clone() } else { anyhow::bail!("❌ For iterable '{}' must be an array", ident) }
}
Value::Range { start, end } => {
let start_val = match start.as_ref() { Value::Number(n) => *n as i32, _ => anyhow::bail!("❌ Range start must be a number") };
let end_val = match end.as_ref() { Value::Number(n) => *n as i32, _ => anyhow::bail!("❌ Range end must be a number") };
(start_val..end_val).map(|i| Value::Number(i as f32)).collect()
}
_ => anyhow::bail!("❌ For iterable must be an array or range, found: {:?}", iterable),
};
for item in items.iter() {
let old_value = self.variables.insert(variable.to_string(), item.clone());
self.collect_events(body)?;
// If a break was signalled inside the body, consume flag and exit for-loop
if self.break_flag {
self.break_flag = false;
// Restore previous variable state before exiting
match old_value {
Some(val) => {
self.variables.insert(variable.to_string(), val);
}
None => {
self.variables.remove(variable);
}
}
break;
}
match old_value { Some(val) => { self.variables.insert(variable.to_string(), val); } None => { self.variables.remove(variable); } }
}
Ok(())
}
}