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Author SHA1 Message Date
nyash-codex
d4f90976da refactor(joinir): Phase 244 - ConditionLoweringBox trait unification 
Unify condition lowering logic across Pattern 2/4 with trait-based API.

New infrastructure:
- condition_lowering_box.rs: ConditionLoweringBox trait + ConditionContext (293 lines)
- ExprLowerer implements ConditionLoweringBox trait (+51 lines)

Pattern migrations:
- Pattern 2 (loop_with_break_minimal.rs): Use trait API
- Pattern 4 (loop_with_continue_minimal.rs): Use trait API

Benefits:
- Unified condition lowering interface
- Extensible for future lowering strategies
- Clean API boundary between patterns and lowering logic
- Zero code duplication

Test results: 911/911 PASS (+2 new tests)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
 2025-12-11 02:35:31 +09:00
nyash-codex
2fc2cf74d1 feat(joinir): Phase 220-B ConditionEnv integration for if-sum lowerer 
Integrates ConditionEnv infrastructure into if-sum lowerer to support
variable conditions like `loop(i < len)`.

## Implementation (Following Pattern 2)

### ConditionEnv Construction
- Added early construction via ConditionEnvBuilder::build_for_break_condition_v2()
- Extracts condition variables from loop condition AST
- Creates ConditionBindings for HOST↔JoinIR ValueId mapping

### Variable Support
- Created ValueOrLiteral enum (Literal(i64) | Variable(String, ValueId))
- Added extract_value_or_variable() with ConditionEnv lookup
- Updated extract_loop_condition() and extract_if_condition()

### JoinIR Generation Updates
- Condition-only variables as loop_step function parameters
- Proper parameter passing in recursive calls
- Condition ValueIds in JoinIR param region (100+)

### Boundary Builder Wiring
- Pass condition_bindings to JoinInlineBoundaryBuilder
- Updated call site in pattern3_with_if_phi.rs
- Added variable_map, loop_var_name, loop_var_id parameters

## Build Status

✅ Compilation successful (0 errors, 3 warnings)

## Test Status

⏳ Tests not yet passing - remap issue identified:
- HOST: len = ValueId(6)
- JoinIR: len = ValueId(101)
- After Merge: len = ValueId(10) ❌

Root cause: JoinIRConversionPipeline remap needs investigation

## Files Modified

- src/mir/join_ir/lowering/loop_with_if_phi_if_sum.rs (+80 lines)
  - ConditionEnv construction
  - Variable support in conditions
  - Updated function signatures

- src/mir/builder/control_flow/joinir/patterns/pattern3_with_if_phi.rs (+10 lines)
  - Pass builder/loop_var to lowerer
  - Wire condition_bindings

## Design Principles

1. Reuse Existing Boxes (ConditionEnv/ConditionBinding)
2. Follow Pattern 2 Structure (proven blueprint)
3. Fail-Fast (variable not in ConditionEnv → error)
4. ParamRole::Condition Routing (separate from carriers)

## Next Steps: Phase 220-C

Fix remap issue in JoinIRConversionPipeline to properly use
condition_bindings.host_value during merge.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
 2025-12-10 02:54:56 +09:00