73 lines
2.1 KiB
Rust
73 lines
2.1 KiB
Rust
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/*!
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* ScopeTracker - Track Box instances for proper lifecycle management
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*
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* Phase 9.78a: Unified Box lifecycle management for VM
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*/
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use std::sync::Arc;
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use crate::box_trait::NyashBox;
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/// Tracks Box instances created in different scopes for proper fini calls
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pub struct ScopeTracker {
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/// Stack of scopes, each containing Boxes created in that scope
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scopes: Vec<Vec<Arc<dyn NyashBox>>>,
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}
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impl ScopeTracker {
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/// Create a new scope tracker
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pub fn new() -> Self {
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Self {
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scopes: vec![Vec::new()], // Start with one root scope
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}
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}
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/// Enter a new scope
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pub fn push_scope(&mut self) {
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self.scopes.push(Vec::new());
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}
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/// Exit current scope and call fini on all Boxes created in it
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pub fn pop_scope(&mut self) {
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if let Some(scope) = self.scopes.pop() {
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// Call fini in reverse order of creation
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for arc_box in scope.into_iter().rev() {
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// For now, fini handling is simplified
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// In a full implementation, we would check if the Box has a fini method
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// and call it appropriately
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// TODO: Implement proper fini dispatch
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let _ = arc_box; // Suppress unused warning
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}
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}
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// Ensure we always have at least one scope
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if self.scopes.is_empty() {
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self.scopes.push(Vec::new());
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}
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}
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/// Register a Box in the current scope
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pub fn register_box(&mut self, nyash_box: Arc<dyn NyashBox>) {
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if let Some(current_scope) = self.scopes.last_mut() {
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current_scope.push(nyash_box);
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}
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}
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/// Clear all scopes (used when resetting VM state)
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pub fn clear(&mut self) {
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// Pop all scopes and call fini
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while self.scopes.len() > 1 {
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self.pop_scope();
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}
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// Clear the root scope
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if let Some(root_scope) = self.scopes.first_mut() {
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root_scope.clear();
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}
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}
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}
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impl Default for ScopeTracker {
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fn default() -> Self {
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Self::new()
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}
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}
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