feat(bytecode): add bytecode virtual machine module #81
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Add a stack-based bytecode VM for faster execution of compiled MeTTa code. The VM module is organized by functionality: - types.rs: Core types (VmError, VmConfig, CallFrame, BindingFrame, ChoicePoint) - pattern.rs: Pattern matching helpers for unification - stack.rs: Stack manipulation operations (push, pop, dup, swap, rot3, over) - arithmetic.rs: Arithmetic operations (+, -, *, /, %) - comparison.rs: Comparison operations (<, <=, >, >=, ==, !=) - value_ops.rs: Value creation and variable binding operations - control_flow.rs: Jumps, calls, returns, and call stack management - nondeterminism.rs: Fork, fail, choice points for backtracking - expression_ops.rs: Expression manipulation (car, cdr, cons, etc.) - advanced_calls.rs: Native, external, and cached function calls - environment_ops.rs: Rule definition and pattern-based dispatch - space_ops.rs: Space operations for knowledge base access - state_ops.rs: Mutable state cell operations - debug_ops.rs: Debugging and tracing operations - tests.rs: Comprehensive test coverage The VM executes bytecode compiled from MeTTa expressions with support for: - Nondeterminism via choice points and backtracking - Pattern matching with variable binding - Environment-based rule dispatch - Memoization cache integration - Native and external function calls Note: JIT compilation support is stubbed out and will be added in a later PR when the JIT compiler infrastructure is complete. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <[email protected]>
- Add #[allow(dead_code)] to pattern.rs helper functions - Add #[allow(dead_code)] to EvalStep enum in eval/mod.rs - Add #[allow(dead_code)] to eval_let_step in let_forms.rs - Add #[allow(dead_code)] to list operations in basic.rs - Add #[allow(clippy::large_enum_variant)] to Alternative enum - Add #[cfg(test)] to CacheStats import in vm/mod.rs 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <[email protected]>
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Summary
Add bytecode VM for Tier 1 compilation:
Part of Stacked PR Series
This is PR #17 in a 28-PR stacked series implementing the bytecode VM and JIT compiler.
Base:
pr16/eval-builtins-spaceNext:
pr18/jit-dependenciesThis PR series implements tiered compilation: tree-walker → bytecode VM → JIT native code