//! Garbage collection module
//!
//! This module contains the conservative garbage collector.
//! Extracted from the monolithic interpreter.rs to improve maintainability.

use crate::runtime::Value;

/// Conservative garbage collector
pub struct ConservativeGC {
    // Placeholder implementation
}

impl Default for ConservativeGC {
    fn default() -> Self {
        Self::new()
    }
}

impl ConservativeGC {
    pub fn new() -> Self {
        Self {}
    }

    pub fn collect(&mut self) {
        // Placeholder
    }

    pub fn track(&mut self, _value: &Value) {
        // Placeholder
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use std::sync::Arc;

    #[test]
    fn test_gc_new() {
        let _gc = ConservativeGC::new();
        // Should create GC instance
        // Test passes without panic;
    }

    #[test]
    fn test_gc_default() {
        let _gc = ConservativeGC::default();
        // Should create GC instance via default
        // Test passes without panic;
    }

    #[test]
    fn test_gc_collect() {
        let mut gc = ConservativeGC::new();
        gc.collect();
        // Should complete collection without panic
        // Test passes without panic;
    }

    #[test]
    fn test_gc_track_value() {
        let mut gc = ConservativeGC::new();
        let value = Value::Integer(42);
        gc.track(&value);
        // Should track value without panic
        // Test passes without panic;
    }

    #[test]
    fn test_gc_track_multiple_values() {
        let mut gc = ConservativeGC::new();
        let values = vec![
            Value::Integer(1),
            Value::Float(2.0),
            Value::Bool(true),
            Value::from_string("test".to_string()),
            Value::Nil,
        ];

        for value in &values {
            gc.track(value);
        }
        // Should track all values without panic
        // Test passes without panic;
    }

    #[test]
    fn test_gc_collect_after_tracking() {
        let mut gc = ConservativeGC::new();
        gc.track(&Value::Integer(100));
        gc.track(&Value::from_string("tracked".to_string()));
        gc.collect();
        // Should collect after tracking without panic
        // Test passes without panic;
    }

    #[test]
    fn test_gc_multiple_collect_cycles() {
        let mut gc = ConservativeGC::new();
        for i in 0..10 {
            gc.track(&Value::Integer(i));
            if i % 3 == 0 {
                gc.collect();
            }
        }
        // Should handle multiple collection cycles
        // Test passes without panic;
    }

    #[test]
    fn test_gc_track_complex_values() {
        let mut gc = ConservativeGC::new();

        // Track array value
        gc.track(&Value::Array(Arc::from(vec![
            Value::Integer(1),
            Value::Integer(2),
        ])));

        // Track object value
        let mut obj = std::collections::HashMap::new();
        obj.insert("key".to_string(), Value::from_string("value".to_string()));
        gc.track(&Value::Object(Arc::new(obj)));

        gc.collect();
        // Should handle complex values
        // Test passes without panic;
    }
}
