Michael Schimmel
260669cba1
This commit restores and enhances several high-performance features that were previously lost, while fixing critical bugs in scope management. Performance Optimizations: - Zero-Copy TCO: Refactored TailCallRequest to use (Rc, usize), moving arguments directly on the VM stack via drain/resize instead of heap-allocating Vecs. - Slice-based Calls: Native functions and field accessors now operate directly on stack slices, significantly reducing memory churn. - SoA Push Fast-Path: Restored specialized 'push' intrinsic for RecordSeries. Matches layouts via Arc::ptr_eq to distribute values directly into columns without keyword lookups. Architectural Improvements: - Static Stack Frames (max_slots): The Binder now calculates the maximum required slots per lambda. The VM pre-resizes the stack frame, preventing collisions between local variables and temporary call arguments. - Macro Hygiene: Fixed a bug where macro-internal variables could overwrite outer call arguments due to stack overlap. - Trait Refactoring: Unified series operations via a polymorphic 'push_value' on the Series trait, with a generic implementation for ScalarSeries<T>. Code Quality: - Resolved all 'cargo clippy' warnings (collapsible ifs, redundant borrows, etc). - Restored 100% test pass rate (64/64 tests). - Verified stability of all examples and benchmarks.