Module recursion 

Recursion limits configuration for sqry.

This module enforces recursion depth limits to prevent resource exhaustion and stack overflow attacks from deeply nested code structures.

Security Model

Defense-in-depth approach with multiple layers:

1. Default limits: Conservative defaults (100 file ops, 1000 expr fuel)
2. Configurable limits: Users can adjust based on their needs
3. Hard caps: Absolute maximums that cannot be bypassed (200 file ops, 10,000 expr fuel)
4. Validation: All values validated against hard caps to prevent config injection

Attack Vectors Mitigated

• Stack overflow: Deep recursion exhausting call stack
• Resource exhaustion: Unbounded recursion consuming CPU/memory
• Config injection: Malicious config files setting extreme limits
• AST bombs: Pathological inputs with extreme nesting depth

Structs

RecursionLimits

Recursion limits configuration