feat(stable-api): add accessor methods (RSTRING_END, RDATA_PTR, RB_OBJ_FREEZE, RB_OBJ_PROMOTED) #679
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Implements #670, #666, #672, #673 - Add rstring_end to StableApiDefinition for RSTRING_END - Add rdata_ptr to StableApiDefinition for DATA_PTR - Add rb_obj_freeze to StableApiDefinition for RB_OBJ_FREEZE - Add rb_obj_promoted, rb_obj_promoted_raw for RB_OBJ_PROMOTED - Implement for Ruby 2.7, 3.0, 3.1, 3.2, 3.3, 3.4, 4.0 - Add C fallbacks in compiled.c - Add FFI wrappers in compiled.rs - Add public macro wrappers in macros.rs - Add comprehensive parity tests
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Summary
Batch 5 of the stable API implementation plan - Adds simple accessor methods to the Stable API:
RSTRING_END- Get pointer to end of string contentsRDATA_PTR- Get data pointer from RData objectRB_OBJ_FREEZE- Freeze an objectRB_OBJ_PROMOTED- Check if object is promoted to old GC generationChanges
rstring_end(),rdata_ptr(),rb_obj_freeze(),rb_obj_promoted(), andrb_obj_promoted_raw()methodsRSTRING_END: Composed fromrstring_ptr + rstring_lenRDATA_PTR: Direct access to RData.data fieldRB_OBJ_FREEZE: Callsrb_obj_freeze_inline()RB_OBJ_PROMOTED: ChecksRUBY_FL_PROMOTEDflagcompiled.cand Rust wrapper incompiled.rsmacros.rswith comprehensive documentationstable_api_test.rsTesting
All tests pass successfully ✅
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