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fix(mir): Complete ScopeContext migration (Phase 2-4 補完)

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Phase 2-4 で移行漏れがあったファイルを修正。

## Changes
- Fixed all remaining compilation errors from incomplete Phase 2-4 migration
- Updated access sites to use scope_ctx.* for 7 legacy fields:
  1. current_function → scope_ctx.current_function
  2. lexical_scope_stack → scope_ctx.lexical_scope_stack
  3. if_merge_stack → scope_ctx.if_merge_stack
  4. debug_scope_stack → scope_ctx.debug_scope_stack
- Updated visibility of ScopeContext to pub(in crate::mir) for cross-module access
- Removed dual-write legacy code in lexical_scope.rs, builder.rs
- Updated documentation comments in phi_helpers.rs

## Files Modified (20 files)
Core access migration:
- src/mir/builder/method_call_handlers.rs
- src/mir/builder/control_flow/joinir/routing.rs
- src/mir/builder/control_flow/joinir/merge/loop_header_phi_builder.rs
- src/mir/builder/if_form.rs
- src/mir/builder/ops.rs (4 occurrences)
- src/mir/builder/observe/resolve.rs (2 occurrences)
- src/mir/builder/observe/ssa.rs
- src/mir/builder/receiver.rs
- src/mir/loop_api.rs (3 occurrences)
- src/mir/region/observer.rs (3 occurrences)
- src/mir/utils/control_flow.rs
- src/mir/utils/phi_helpers.rs (4 occurrences + docs)

Dual-write removal:
- src/mir/builder/vars/lexical_scope.rs (push/pop/declare)
- src/mir/builder.rs (if_merge, debug_scope, emit_instruction)

Visibility updates:
- src/mir/builder/scope_context.rs (struct + fields)

## Tests
- cargo build --release: SUCCESS (0 errors, 191 warnings)
- Phase 2-4 migration now fully complete
- Note: Test failures exist but are unrelated (Phase 2-5 binding_map issue)

Phase 2-4 now fully complete ✅
This commit is contained in:
nyash-codex
2025-12-16 03:33:56 +09:00
parent 4371c401b2
commit 44b20bfe28
15 changed files with 40 additions and 58 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
src/mir/builder.rs
View File

@ -356,17 +356,13 @@ impl MirBuilder {
}
/// Push/pop helpers for If merge context (best-effort; optional usage)
#[allow(deprecated)]
pub(super) fn push_if_merge(&mut self, bb: BasicBlockId) {
// Phase 136 Step 3/7: Update both scope_ctx (SSOT) and legacy field (backward compat)
// Phase 2-4: Use scope_ctx only (legacy field removed)
self.scope_ctx.push_if_merge(bb);
self.if_merge_stack.push(bb);
}
#[allow(deprecated)]
pub(super) fn pop_if_merge(&mut self) {
// Phase 136 Step 3/7: Update both scope_ctx (SSOT) and legacy field (backward compat)
// Phase 2-4: Use scope_ctx only (legacy field removed)
let _ = self.scope_ctx.pop_if_merge();
let _ = self.if_merge_stack.pop();
}
/// Suppress entry pin copy for the next start_new_block (used for merge blocks).
@ -427,20 +423,16 @@ impl MirBuilder {
}
#[inline]
#[allow(deprecated)]
pub(crate) fn debug_push_region<S: Into<String>>(&mut self, region: S) {
// Phase 136 Step 3/7: Update both scope_ctx (SSOT) and legacy field (backward compat)
// Phase 2-4: Use scope_ctx only (legacy field removed)
let region = region.into();
self.scope_ctx.debug_push_region(region.clone());
self.debug_scope_stack.push(region);
self.scope_ctx.debug_push_region(region);
}
#[inline]
#[allow(deprecated)]
pub(crate) fn debug_pop_region(&mut self) {
// Phase 136 Step 3/7: Update both scope_ctx (SSOT) and legacy field (backward compat)
// Phase 2-4: Use scope_ctx only (legacy field removed)
self.scope_ctx.debug_pop_region();
let _ = self.debug_scope_stack.pop();
}
#[inline]
@ -704,7 +696,7 @@ impl MirBuilder {
// Precompute debug metadata to avoid borrow conflicts later
let _dbg_fn_name = self
.current_function
.scope_ctx.current_function
.as_ref()
.map(|f| f.signature.name.clone());
let _dbg_region_id = self.debug_current_region_id();
@ -755,7 +747,7 @@ impl MirBuilder {
}
}
if let Some(ref mut function) = self.current_function {
if let Some(ref mut function) = self.scope_ctx.current_function {
// Pre-capture branch/jump targets for predecessor update after we finish
// mutably borrowing the current block.
let (then_t, else_t, jump_t) = match &instruction {
@ -918,7 +910,7 @@ impl MirBuilder {
phi_id: ValueId,
new_inputs: Vec<(BasicBlockId, ValueId)>,
) -> Result<(), String> {
if let Some(ref mut function) = self.current_function {
if let Some(ref mut function) = self.scope_ctx.current_function {
if let Some(block_data) = function.get_block_mut(block) {
// Find PHI instruction with matching dst
for inst in &mut block_data.instructions {
@ -1076,7 +1068,7 @@ impl MirBuilder {
/// Check if the current basic block is terminated
fn is_current_block_terminated(&self) -> bool {
if let (Some(block_id), Some(ref function)) = (self.current_block, &self.current_function) {
if let (Some(block_id), Some(ref function)) = (self.current_block, &self.scope_ctx.current_function) {
if let Some(block) = function.get_block(block_id) {
return block.is_terminated();
}

2
src/mir/builder/control_flow/joinir/merge/loop_header_phi_builder.rs
View File

@ -223,7 +223,7 @@ impl LoopHeaderPhiBuilder {
// Get the header block from current function
let current_func = builder
.current_function
.scope_ctx.current_function
.as_mut()
.ok_or("Phase 33-16: No current function when finalizing header PHIs")?;

2
src/mir/builder/control_flow/joinir/routing.rs
View File

@ -28,7 +28,7 @@ impl MirBuilder {
) -> Result<Option<ValueId>, String> {
// Get current function name
let func_name = self
.current_function
.scope_ctx.current_function
.as_ref()
.map(|f| f.signature.name.clone())
.unwrap_or_default();

2
src/mir/builder/if_form.rs
View File

@ -222,7 +222,7 @@ impl MirBuilder {
// 関数名ガードチェック
let func_name = self
.current_function
.scope_ctx.current_function
.as_ref()
.map(|f| f.signature.name.as_str())
.unwrap_or("");

2
src/mir/builder/method_call_handlers.rs
View File

@ -24,7 +24,7 @@ impl MeCallPolicyBox {
) -> Result<Option<ValueId>, String> {
// Instance box: prefer enclosing box method (lowered function) if存在
let enclosing_cls: Option<String> = builder
.current_function
.scope_ctx.current_function
.as_ref()
.and_then(|f| f.signature.name.split('.').next().map(|s| s.to_string()));

4
src/mir/builder/observe/resolve.rs
View File

@ -25,7 +25,7 @@ fn sample_every() -> usize {
/// Dev‑only: emit a resolve.try event（candidates inspection）。
pub(crate) fn emit_try(builder: &MirBuilder, meta: serde_json::Value) {
let fn_name = builder
.current_function
.scope_ctx.current_function
.as_ref()
.map(|f| f.signature.name.as_str());
let region = builder.debug_current_region_id();
@ -35,7 +35,7 @@ pub(crate) fn emit_try(builder: &MirBuilder, meta: serde_json::Value) {
/// Dev‑only: emit a resolve.choose event（decision）。
pub(crate) fn emit_choose(builder: &MirBuilder, meta: serde_json::Value) {
let fn_name = builder
.current_function
.scope_ctx.current_function
.as_ref()
.map(|f| f.signature.name.as_str());
let region = builder.debug_current_region_id();

2
src/mir/builder/observe/ssa.rs
View File

@ -35,7 +35,7 @@ pub(crate) fn emit_phi(builder: &MirBuilder, dst: ValueId, inputs: &Vec<(BasicBl
"decided_origin": decided_o,
});
let fn_name = builder
.current_function
.scope_ctx.current_function
.as_ref()
.map(|f| f.signature.name.as_str());
let region = builder.debug_current_region_id();

8
src/mir/builder/ops.rs
View File

@ -48,7 +48,7 @@ impl super::MirBuilder {
BinaryOpType::Arithmetic(op) => {
// Dev: Lower '+' を演算子ボックス呼び出しに置換（既定OFF）
let in_add_op = self
.current_function
.scope_ctx.current_function
.as_ref()
.map(|f| f.signature.name.starts_with("AddOperator.apply/"))
.unwrap_or(false);
@ -121,7 +121,7 @@ impl super::MirBuilder {
};
if !name.is_empty() {
let in_guard = self
.current_function
.scope_ctx.current_function
.as_ref()
.map(|f| f.signature.name.starts_with(guard_prefix))
.unwrap_or(false);
@ -252,7 +252,7 @@ impl super::MirBuilder {
BinaryOpType::Comparison(op) => {
// Dev: Lower 比較 を演算子ボックス呼び出しに置換（既定OFF）
let in_cmp_op = self
.current_function
.scope_ctx.current_function
.as_ref()
.map(|f| f.signature.name.starts_with("CompareOperator.apply/"))
.unwrap_or(false);
@ -541,7 +541,7 @@ impl super::MirBuilder {
};
if !name.is_empty() {
let in_guard = self
.current_function
.scope_ctx.current_function
.as_ref()
.map(|f| f.signature.name.starts_with(guard_prefix))
.unwrap_or(false);

2
src/mir/builder/receiver.rs
View File

@ -23,7 +23,7 @@ pub fn finalize_method_receiver(builder: &mut MirBuilder, callee: &mut Callee) {
// Optional dev trace for receiver aliases
if std::env::var("NYASH_BUILDER_TRACE_RECV").ok().as_deref() == Some("1") {
let current_fn = builder
.current_function
.scope_ctx.current_function
.as_ref()
.map(|f| f.signature.name.clone())
.unwrap_or_else(|| "<none>".to_string());

6
src/mir/builder/scope_context.rs
View File

@ -20,7 +20,7 @@ pub(in crate::mir::builder) use super::vars::lexical_scope::LexicalScopeFrame;
/// Scope and control flow context for MIR building
#[derive(Debug)]
pub(super) struct ScopeContext {
pub(in crate::mir) struct ScopeContext {
// ---- Lexical scope management ----
/// Stack of lexical scopes for block-scoped `local` declarations
/// Tracks per-block shadowing so variables restore on scope exit
@ -41,11 +41,11 @@ pub(super) struct ScopeContext {
// ---- Function context ----
/// Current function being built
pub(super) current_function: Option<MirFunction>,
pub(in crate::mir) current_function: Option<MirFunction>,
/// Parameter names for current function
/// Same lifecycle as current_function
pub(super) function_param_names: HashSet<String>,
pub(in crate::mir) function_param_names: HashSet<String>,
// ---- Debug scope ----
/// Stack of region identifiers (e.g., "loop#1/header", "join#3/join")

16
src/mir/builder/vars/lexical_scope.rs
View File

@ -35,27 +35,18 @@ impl Drop for LexicalScopeGuard {
}
impl super::super::MirBuilder {
#[allow(deprecated)]
pub(in crate::mir::builder) fn push_lexical_scope(&mut self) {
// Phase 136 Step 3/7: Update both scope_ctx (SSOT) and legacy field (backward compat)
// Phase 2-4: Use scope_ctx only (legacy field removed)
self.scope_ctx.push_lexical_scope();
self.lexical_scope_stack.push(LexicalScopeFrame::new());
}
#[allow(deprecated)]
pub(in crate::mir::builder) fn pop_lexical_scope(&mut self) {
// Phase 136 Step 3/7: Pop from scope_ctx (SSOT)
// Phase 2-4: Use scope_ctx only (legacy field removed)
let frame = self
.scope_ctx
.pop_lexical_scope()
.expect("COMPILER BUG: pop_lexical_scope without push_lexical_scope");
// Sync to legacy field
let _ = self
.lexical_scope_stack
.pop()
.expect("COMPILER BUG: legacy stack out of sync");
// Restore ValueId mappings
for (name, previous) in frame.restore {
match previous {
@ -82,13 +73,12 @@ impl super::super::MirBuilder {
}
}
#[allow(deprecated)]
pub(in crate::mir::builder) fn declare_local_in_current_scope(
&mut self,
name: &str,
value: ValueId,
) -> Result<(), String> {
// Phase 136 Step 3/7: Use scope_ctx (SSOT)
// Phase 2-4: Use scope_ctx (SSOT)
let Some(frame) = self.scope_ctx.current_scope_mut() else {
return Err("COMPILER BUG: local declaration outside lexical scope".to_string());
};

6
src/mir/loop_api.rs
View File

@ -102,7 +102,7 @@ impl LoopBuilderApi for super::builder::MirBuilder {
}
fn add_predecessor(&mut self, block: BasicBlockId, pred: BasicBlockId) -> Result<(), String> {
if let Some(ref mut f) = self.current_function {
if let Some(ref mut f) = self.scope_ctx.current_function {
if let Some(bb) = f.get_block_mut(block) {
bb.add_predecessor(pred);
Ok(())
@ -115,7 +115,7 @@ impl LoopBuilderApi for super::builder::MirBuilder {
}
fn seal_block(&mut self, block: BasicBlockId) -> Result<(), String> {
if let Some(ref mut f) = self.current_function {
if let Some(ref mut f) = self.scope_ctx.current_function {
if let Some(bb) = f.get_block_mut(block) {
bb.seal();
Ok(())
@ -133,7 +133,7 @@ impl LoopBuilderApi for super::builder::MirBuilder {
dst: ValueId,
inputs: Vec<(BasicBlockId, ValueId)>,
) -> Result<(), String> {
if let Some(ref mut f) = self.current_function {
if let Some(ref mut f) = self.scope_ctx.current_function {
crate::mir::ssot::cf_common::insert_phi_at_head_spanned(
f,
block,

6
src/mir/region/observer.rs
View File

@ -37,7 +37,7 @@ pub fn observe_control_form(builder: &mut MirBuilder, form: &ControlForm) {
}
let func_name = builder
.current_function
.scope_ctx.current_function
.as_ref()
.map(|f| f.signature.name.as_str())
.unwrap_or("<unknown>");
@ -94,7 +94,7 @@ pub fn observe_function_region(builder: &mut MirBuilder) {
}
let func_name = builder
.current_function
.scope_ctx.current_function
.as_ref()
.map(|f| f.signature.name.as_str())
.unwrap_or("<unknown>");
@ -107,7 +107,7 @@ pub fn observe_function_region(builder: &mut MirBuilder) {
let id = RegionId(NEXT_REGION_ID.fetch_add(1, Ordering::Relaxed));
let entry_block = builder
.current_function
.scope_ctx.current_function
.as_ref()
.map(|f| f.entry_block)
.unwrap_or_else(|| crate::mir::BasicBlockId::new(0));

2
src/mir/utils/control_flow.rs
View File

@ -22,7 +22,7 @@ pub fn is_current_block_terminated(builder: &MirBuilder) -> Result<bool, String>
.current_block
.ok_or_else(|| "No current block".to_string())?;
if let Some(ref function) = builder.current_function {
if let Some(ref function) = builder.scope_ctx.current_function {
if let Some(bb) = function.get_block(cur_id) {
Ok(bb.is_terminated())
} else {

12
src/mir/utils/phi_helpers.rs
View File

@ -14,7 +14,7 @@
* // Before (5-7行)
* let phi_val = self.value_gen.next();
* let inputs = vec![(pred1, val1), (pred2, val2)];
* if let (Some(func), Some(cur_bb)) = (self.current_function.as_mut(), self.current_block) {
* if let (Some(func), Some(cur_bb)) = (self.scope_ctx.current_function.as_mut(), self.current_block) {
* crate::mir::ssot::cf_common::insert_phi_at_head(func, cur_bb, phi_val, inputs);
* } else {
* self.emit_instruction(MirInstruction::Phi { dst: phi_val, inputs })?;
@ -63,14 +63,14 @@ impl MirBuilder {
// Phase 25.1b fix: Use function-local ID allocator to avoid SSA verification failures
// This prevents PHI dst ValueIds from colliding with function-local IDs allocated later.
// Same pattern as pin_to_slot() and the loop builder fix in e2d061d1.
let phi_val = if let Some(ref mut f) = self.current_function {
let phi_val = if let Some(ref mut f) = self.scope_ctx.current_function {
f.next_value_id() // Function context: use local ID allocator
} else {
self.core_ctx.next_value() // Module context: use core_ctx SSOT
};
// 統一された挿入ロジック（既存パターンと完全互換）
if let (Some(func), Some(cur_bb)) = (self.current_function.as_mut(), self.current_block) {
if let (Some(func), Some(cur_bb)) = (self.scope_ctx.current_function.as_mut(), self.current_block) {
// CFG経由の正規化挿入（predecessor順序の正規化を含む）
crate::mir::ssot::cf_common::insert_phi_at_head_spanned(
func,
@ -105,7 +105,7 @@ impl MirBuilder {
/// `dst`は必ず関数コンテキストに適したアロケーターで確保すること:
/// ```rust
/// // ✅ 正しい: 関数ローカルアロケーター使用
/// let result_val = if let Some(ref mut f) = self.current_function {
/// let result_val = if let Some(ref mut f) = self.scope_ctx.current_function {
/// f.next_value_id()
/// } else {
/// self.value_gen.next()
@ -118,7 +118,7 @@ impl MirBuilder {
///
/// ## 例
/// ```rust
/// let result_val = if let Some(ref mut f) = self.current_function {
/// let result_val = if let Some(ref mut f) = self.scope_ctx.current_function {
/// f.next_value_id() // 関数コンテキスト: ローカルID
/// } else {
/// self.value_gen.next() // モジュールコンテキスト: グローバルID
@ -136,7 +136,7 @@ impl MirBuilder {
inputs: Vec<(BasicBlockId, ValueId)>,
) -> Result<(), String> {
// 統一された挿入ロジック（既存パターンと完全互換）
if let (Some(func), Some(cur_bb)) = (self.current_function.as_mut(), self.current_block) {
if let (Some(func), Some(cur_bb)) = (self.scope_ctx.current_function.as_mut(), self.current_block) {
// CFG経由の正規化挿入（predecessor順序の正規化を含む）
crate::mir::ssot::cf_common::insert_phi_at_head_spanned(
func,