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refactor(joinir): Phase 78 Quick Wins - PromotedBindingRecorder Box

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**Quick Win 1: PromotedBindingRecorder Box Introduction**

- **New file**: `promoted_binding_recorder.rs` (167 lines)
  - Type-safe BindingId recording for promoted variables
  - Centralizes scattered binding_map wiring logic
  - Result-based error handling (BindingRecordError enum)
  - 4 unit tests (1 always-on + 3 feature-gated)
  - Dual impl blocks for feature gate handling

- **Updated DigitPosPromoter**: `loop_body_digitpos_promoter.rs`
  - Replaced 30-line binding_map wiring with 2-line recorder call
  - Added log_promotion_error() helper function
  - Removed scattered eprintln! warnings

- **Updated TrimLoopHelper**: `loop_body_carrier_promoter.rs`
  - Replaced 30-line binding_map wiring with 2-line recorder call
  - Added log_trim_promotion_error() helper function
  - Updated 4 tests to include binding_map field

**Quick Win 2: Error Handling Improvement**

- Replaced eprintln! with Result-based errors
- Added clear error messages via helper functions
- Both promoters now use same error logging pattern
- Testable error paths (3 error tests added)

**Impact**:
- **Code reduction**: ~30 lines deleted (duplicated wiring logic)
- **Maintainability**: Single reusable Box for future promoters
- **Testability**: Error cases now covered by unit tests
- **Consistency**: Unified error message format

**Test Results**:
- Without feature: 959/959 PASS (1 new test added)
- With normalized_dev: 1010/1013 PASS (4 new tests total)
  - 3 failing tests are pre-existing phase49 issues
- All PromotedBindingRecorder tests: 4/4 PASS
- All DigitPosPromoter tests: 6/6 PASS
- All CarrierPromoter tests: 10/10 PASS

**Build Status**: ✅ Clean (0 errors, 0 warnings)

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

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
This commit is contained in:
nyash-codex
2025-12-13 06:33:44 +09:00
parent 7ef9079aae
commit 10e78fa313
4 changed files with 250 additions and 58 deletions
Download Patch File Download Diff File Expand all files Collapse all files

73
src/mir/loop_pattern_detection/loop_body_carrier_promoter.rs
View File

@ -23,6 +23,9 @@
use crate::ast::{ASTNode, BinaryOperator, LiteralValue};
use crate::mir::join_ir::lowering::loop_scope_shape::LoopScopeShape;
use crate::mir::loop_pattern_detection::loop_condition_scope::LoopConditionScope;
use crate::mir::loop_pattern_detection::promoted_binding_recorder::{
BindingRecordError, PromotedBindingRecorder,
};
/// 昇格リクエスト
pub struct PromotionRequest<'a> {
@ -101,37 +104,18 @@ impl TrimPatternInfo {
.promoted_loopbodylocals
.push(self.var_name.clone());
// Phase 77: Type-safe BindingId promotion tracking
// Phase 78: Type-safe BindingId promotion tracking (using PromotedBindingRecorder)
#[cfg(feature = "normalized_dev")]
if let Some(binding_map) = binding_map {
// Look up original and promoted BindingIds
let original_binding_opt = binding_map.get(&self.var_name);
let promoted_binding_opt = binding_map.get(&self.carrier_name);
let recorder = PromotedBindingRecorder::new(binding_map);
#[cfg(not(feature = "normalized_dev"))]
let recorder = PromotedBindingRecorder::new();
match (original_binding_opt, promoted_binding_opt) {
(Some(&original_bid), Some(&promoted_bid)) => {
carrier_info.record_promoted_binding(original_bid, promoted_bid);
eprintln!(
"[trim_lowerer/phase77] Recorded promoted binding: {} (BindingId({:?})) → {} (BindingId({:?}))",
self.var_name, original_bid, self.carrier_name, promoted_bid
);
}
(None, _) => {
eprintln!(
"[trim_lowerer/phase77] WARNING: Original variable '{}' not found in binding_map",
self.var_name
);
}
(_, None) => {
eprintln!(
"[trim_lowerer/phase77] WARNING: Promoted carrier '{}' not found in binding_map",
self.carrier_name
);
}
}
} else {
#[cfg(feature = "normalized_dev")]
eprintln!("[trim_lowerer/phase77] INFO: binding_map not provided (legacy mode)");
if let Err(e) = recorder.record_promotion(
&mut carrier_info,
&self.var_name,
&self.carrier_name,
) {
log_trim_promotion_error(&e);
}
carrier_info
@ -422,6 +406,29 @@ impl LoopBodyCarrierPromoter {
}
}
/// Phase 78: Log promotion errors with clear messages (for Trim pattern)
#[cfg(feature = "normalized_dev")]
fn log_trim_promotion_error(error: &BindingRecordError) {
match error {
BindingRecordError::OriginalNotFound(name) => {
eprintln!(
"[trim_lowerer/warning] Original variable '{}' not found in binding_map",
name
);
}
BindingRecordError::PromotedNotFound(name) => {
eprintln!(
"[trim_lowerer/warning] Promoted variable '{}' not found in binding_map",
name
);
}
}
}
/// Phase 78: No-op version for non-dev builds
#[cfg(not(feature = "normalized_dev"))]
fn log_trim_promotion_error(_error: &BindingRecordError) {}
#[cfg(test)]
mod tests {
use super::*;
@ -518,6 +525,8 @@ mod tests {
cond_scope: &cond_scope,
break_cond: None,
loop_body: &[],
#[cfg(feature = "normalized_dev")]
binding_map: None,
};
let result = LoopBodyCarrierPromoter::try_promote(&request);
@ -542,6 +551,8 @@ mod tests {
cond_scope: &cond_scope,
break_cond: None,
loop_body: &[], // Empty body - no definition
#[cfg(feature = "normalized_dev")]
binding_map: None,
};
let result = LoopBodyCarrierPromoter::try_promote(&request);
@ -665,6 +676,8 @@ mod tests {
cond_scope: &cond_scope,
break_cond: Some(&break_cond),
loop_body: &loop_body,
#[cfg(feature = "normalized_dev")]
binding_map: None,
};
let result = LoopBodyCarrierPromoter::try_promote(&request);
@ -701,6 +714,8 @@ mod tests {
cond_scope: &cond_scope,
break_cond: Some(&break_cond),
loop_body: &loop_body,
#[cfg(feature = "normalized_dev")]
binding_map: None,
};
let result = LoopBodyCarrierPromoter::try_promote(&request);

65
src/mir/loop_pattern_detection/loop_body_digitpos_promoter.rs
View File

@ -37,6 +37,9 @@ use crate::ast::{ASTNode, BinaryOperator};
use crate::mir::join_ir::lowering::carrier_info::CarrierInfo;
use crate::mir::join_ir::lowering::loop_scope_shape::LoopScopeShape;
use crate::mir::loop_pattern_detection::loop_condition_scope::LoopConditionScope;
use crate::mir::loop_pattern_detection::promoted_binding_recorder::{
BindingRecordError, PromotedBindingRecorder,
};
use crate::mir::ValueId;
/// Promotion request for A-4 digit position pattern
@ -236,37 +239,18 @@ impl DigitPosPromoter {
.promoted_loopbodylocals
.push(var_in_cond.clone());
// Phase 77: Type-safe BindingId promotion tracking
// Phase 78: Type-safe BindingId promotion tracking (using PromotedBindingRecorder)
#[cfg(feature = "normalized_dev")]
if let Some(binding_map) = req.binding_map {
// Look up original and promoted BindingIds
let original_binding_opt = binding_map.get(&var_in_cond);
let promoted_bool_binding_opt = binding_map.get(&bool_carrier_name);
let recorder = PromotedBindingRecorder::new(req.binding_map);
#[cfg(not(feature = "normalized_dev"))]
let recorder = PromotedBindingRecorder::new();
match (original_binding_opt, promoted_bool_binding_opt) {
(Some(&original_bid), Some(&promoted_bid)) => {
carrier_info.record_promoted_binding(original_bid, promoted_bid);
eprintln!(
"[digitpos_promoter/phase77] Recorded promoted binding: {} (BindingId({:?})) → {} (BindingId({:?}))",
var_in_cond, original_bid, bool_carrier_name, promoted_bid
);
}
(None, _) => {
eprintln!(
"[digitpos_promoter/phase77] WARNING: Original variable '{}' not found in binding_map",
var_in_cond
);
}
(_, None) => {
eprintln!(
"[digitpos_promoter/phase77] WARNING: Promoted carrier '{}' not found in binding_map",
bool_carrier_name
);
}
}
} else {
#[cfg(feature = "normalized_dev")]
eprintln!("[digitpos_promoter/phase77] INFO: binding_map not provided (legacy mode)");
if let Err(e) = recorder.record_promotion(
&mut carrier_info,
&var_in_cond,
&bool_carrier_name,
) {
log_promotion_error(&e);
}
eprintln!(
@ -500,6 +484,29 @@ impl DigitPosPromoter {
}
}
/// Phase 78: Log promotion errors with clear messages
#[cfg(feature = "normalized_dev")]
fn log_promotion_error(error: &BindingRecordError) {
match error {
BindingRecordError::OriginalNotFound(name) => {
eprintln!(
"[digitpos_promoter/warning] Original variable '{}' not found in binding_map",
name
);
}
BindingRecordError::PromotedNotFound(name) => {
eprintln!(
"[digitpos_promoter/warning] Promoted variable '{}' not found in binding_map",
name
);
}
}
}
/// Phase 78: No-op version for non-dev builds
#[cfg(not(feature = "normalized_dev"))]
fn log_promotion_error(_error: &BindingRecordError) {}
#[cfg(test)]
mod tests {
use super::*;

4
src/mir/loop_pattern_detection/mod.rs
View File

@ -697,3 +697,7 @@ pub mod break_condition_analyzer;
// Phase 200-A: Function Scope Capture Infrastructure
pub mod function_scope_capture;
// Phase 78: PromotedBindingRecorder - Type-safe BindingId recording
pub mod promoted_binding_recorder;
pub use promoted_binding_recorder::{BindingRecordError, PromotedBindingRecorder};

166
src/mir/loop_pattern_detection/promoted_binding_recorder.rs Normal file
View File

@ -0,0 +1,166 @@
//! PromotedBindingRecorder - Type-safe BindingId recording for promoted variables
//!
//! This box centralizes the logic for recording promoted variable mappings
//! (original BindingId → promoted BindingId) in the promoted_bindings map.
//!
//! Replaces scattered binding_map wiring across 8 files with a single,
//! testable, reusable box.
#[cfg(feature = "normalized_dev")]
use crate::mir::binding_id::BindingId;
use crate::mir::join_ir::lowering::carrier_info::CarrierInfo;
#[cfg(feature = "normalized_dev")]
use std::collections::BTreeMap;
/// Records promoted variable bindings in a type-safe manner.
///
/// Example:
/// ```ignore
/// let recorder = PromotedBindingRecorder::new(Some(&builder.binding_map));
/// recorder.record_promotion(&mut carrier_info, "digit_pos", "is_digit_pos")?;
/// ```
#[cfg(feature = "normalized_dev")]
pub struct PromotedBindingRecorder<'a> {
binding_map: Option<&'a BTreeMap<String, BindingId>>,
}
/// Non-dev version (zero-sized, no lifetime)
#[cfg(not(feature = "normalized_dev"))]
pub struct PromotedBindingRecorder;
#[derive(Debug)]
pub enum BindingRecordError {
OriginalNotFound(String),
PromotedNotFound(String),
}
#[cfg(feature = "normalized_dev")]
impl<'a> PromotedBindingRecorder<'a> {
/// Create a new recorder with optional binding map.
pub fn new(binding_map: Option<&'a BTreeMap<String, BindingId>>) -> Self {
Self { binding_map }
}
/// Record a promotion mapping (original_name → promoted_name).
pub fn record_promotion(
&self,
carrier_info: &mut CarrierInfo,
original_name: &str,
promoted_name: &str,
) -> Result<(), BindingRecordError> {
if let Some(binding_map) = self.binding_map {
let original_bid = binding_map
.get(original_name)
.copied()
.ok_or_else(|| BindingRecordError::OriginalNotFound(original_name.to_string()))?;
let promoted_bid = binding_map
.get(promoted_name)
.copied()
.ok_or_else(|| BindingRecordError::PromotedNotFound(promoted_name.to_string()))?;
carrier_info.record_promoted_binding(original_bid, promoted_bid);
Ok(())
} else {
Ok(()) // No binding map available
}
}
}
#[cfg(not(feature = "normalized_dev"))]
impl PromotedBindingRecorder {
/// Create a new recorder (no-op in non-dev builds).
pub fn new() -> Self {
Self
}
/// Record a promotion mapping (no-op in non-dev builds).
pub fn record_promotion(
&self,
_carrier_info: &mut CarrierInfo,
_original_name: &str,
_promoted_name: &str,
) -> Result<(), BindingRecordError> {
Ok(()) // No-op in non-dev mode
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::mir::ValueId;
fn make_test_carrier_info() -> CarrierInfo {
CarrierInfo::with_carriers("test_var".to_string(), ValueId(0), vec![])
}
#[cfg(feature = "normalized_dev")]
#[test]
fn test_record_promotion_success() {
use crate::mir::binding_id::BindingId;
use std::collections::BTreeMap;
let mut binding_map = BTreeMap::new();
binding_map.insert("digit_pos".to_string(), BindingId::new(10));
binding_map.insert("is_digit_pos".to_string(), BindingId::new(20));
let recorder = PromotedBindingRecorder::new(Some(&binding_map));
let mut carrier_info = make_test_carrier_info();
assert!(recorder
.record_promotion(&mut carrier_info, "digit_pos", "is_digit_pos")
.is_ok());
}
#[cfg(feature = "normalized_dev")]
#[test]
fn test_record_promotion_missing_original() {
use std::collections::BTreeMap;
let binding_map = BTreeMap::new();
let recorder = PromotedBindingRecorder::new(Some(&binding_map));
let mut carrier_info = make_test_carrier_info();
match recorder.record_promotion(&mut carrier_info, "digit_pos", "is_digit_pos") {
Err(BindingRecordError::OriginalNotFound(name)) => {
assert_eq!(name, "digit_pos");
}
_ => panic!("Expected OriginalNotFound error"),
}
}
#[cfg(feature = "normalized_dev")]
#[test]
fn test_record_promotion_missing_promoted() {
use crate::mir::binding_id::BindingId;
use std::collections::BTreeMap;
let mut binding_map = BTreeMap::new();
binding_map.insert("digit_pos".to_string(), BindingId::new(10));
let recorder = PromotedBindingRecorder::new(Some(&binding_map));
let mut carrier_info = make_test_carrier_info();
match recorder.record_promotion(&mut carrier_info, "digit_pos", "is_digit_pos") {
Err(BindingRecordError::PromotedNotFound(name)) => {
assert_eq!(name, "is_digit_pos");
}
_ => panic!("Expected PromotedNotFound error"),
}
}
#[test]
fn test_record_promotion_no_binding_map() {
#[cfg(feature = "normalized_dev")]
let recorder = PromotedBindingRecorder::new(None);
#[cfg(not(feature = "normalized_dev"))]
let recorder = PromotedBindingRecorder::new();
let mut carrier_info = make_test_carrier_info();
// Should be no-op
assert!(recorder
.record_promotion(&mut carrier_info, "digit_pos", "is_digit_pos")
.is_ok());
}
}