Phase 84-4-B で Case D を 0件に削減完了したことにより、 if_phi.rs のレガシーフォールバックが完全に不要になったため削除。 主な変更: - if_phi.rs 削除(339行) - test_utils.rs 新規作成(テスト専用ユーティリティ分離、127行) - lifecycle.rs: if_phi 呼び出し削除、Phase 84-5 安全ガード追加 - env.rs: phi_fallback_disabled() を常に true に変更 - テスト: A/B テスト → GenericTypeResolver 単独テストに変更 検証結果: - Case D: 0件(完全解消継続) - Tests: 498 passed(Phase 84-4: 497 から +1) Phase 84 プロジェクト完全達成: 15件 → 0件(100%削減) 純削減: 220行 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
521 lines
25 KiB
Rust
521 lines
25 KiB
Rust
use super::{
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BasicBlockId, EffectMask, FunctionSignature, MirInstruction, MirModule, MirType, ValueId,
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};
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use crate::ast::ASTNode;
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use crate::config;
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// Lifecycle routines extracted from builder.rs
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fn has_main_static(ast: &ASTNode) -> bool {
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use crate::ast::ASTNode as N;
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if let N::Program { statements, .. } = ast {
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for st in statements {
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if let N::BoxDeclaration {
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name,
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methods,
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is_static,
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..
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} = st
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{
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if *is_static && name == "Main" {
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if let Some(m) = methods.get("main") {
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if let N::FunctionDeclaration { .. } = m {
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return true;
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}
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}
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}
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}
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}
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}
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false
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}
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// Phase 65.5: 型ヒントポリシーを箱化モジュールから使用
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//
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// 60 行削減!get_phi_type_hint() と is_type_hint_target() を
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// type_hint_policy モジュールに移動。
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//
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// 箱化の利点:
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// - ✅ 単一責務:ポリシー判定のみ
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// - ✅ テスト可能:各 Phase 独立テスト
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// - ✅ 拡張容易:Phase 66+ で P3-C 追加が簡単
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use crate::mir::join_ir::lowering::type_hint_policy::TypeHintPolicy;
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// Phase 67: P3-C ジェネリック型推論箱
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use crate::mir::join_ir::lowering::generic_type_resolver::GenericTypeResolver;
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// Phase 83: P3-D 既知メソッド戻り値型推論箱
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use crate::mir::join_ir::lowering::method_return_hint::MethodReturnHintBox;
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// Phase 84-2: Copy命令型伝播箱(ChatGPT Pro設計)
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use crate::mir::phi_core::copy_type_propagator::CopyTypePropagator;
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// Phase 84-3: PHI + Copy グラフ型推論箱(ChatGPT Pro設計)
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use crate::mir::phi_core::phi_type_resolver::PhiTypeResolver;
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// Phase 82: dev ガード用ヘルパー - Case 分類ロジック統一化
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//
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// infer_type_from_phi_with_hint() の 2 つの callsite で重複していた
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// Case 判定ロジックを DRY 化。
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//
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// Case 分類:
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// - Case A: hint 付き(GenericTypeResolver 不要)
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// - Case B: P1/P2/P3-A/B で hint 失敗(理論上不可)
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// - Case D: P3-C で GenericTypeResolver 失敗(PHI 走査フォールバック)
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//
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// Note: dev フラグで制御されるので、#[cfg] は不要(環境変数で制御)
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fn classify_phi_fallback_case(hint: Option<&MirType>, function_name: &str) -> &'static str {
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if hint.is_some() {
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"Case A (hint付き)"
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} else if TypeHintPolicy::is_target(function_name) {
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"Case B (P1/P2/P3-A/B hint失敗)"
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} else {
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"Case D (P3-C GenericTypeResolver失敗)"
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}
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}
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impl super::MirBuilder {
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/// Unified declaration indexing (Phase A): collect symbols before lowering
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/// - user_defined_boxes: non-static Box names (for NewBox birth() skip)
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/// - static_method_index: name -> [(BoxName, arity)] (for bare-call fallback)
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fn index_declarations(&mut self, node: &ASTNode) {
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match node {
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ASTNode::Program { statements, .. } => {
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for st in statements {
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self.index_declarations(st);
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}
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}
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ASTNode::BoxDeclaration {
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name,
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methods,
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is_static,
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..
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} => {
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if !*is_static {
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self.user_defined_boxes.insert(name.clone());
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} else {
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for (mname, mast) in methods {
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if let ASTNode::FunctionDeclaration { params, .. } = mast {
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self.static_method_index
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.entry(mname.clone())
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.or_insert_with(Vec::new)
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.push((name.clone(), params.len()));
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}
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}
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}
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}
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_ => {}
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}
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}
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pub(super) fn prepare_module(&mut self) -> Result<(), String> {
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let mut module = MirModule::new("main".to_string());
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module.metadata.source_file = self.current_source_file();
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let main_signature = FunctionSignature {
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name: "main".to_string(),
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params: vec![],
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return_type: MirType::Void,
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effects: EffectMask::PURE,
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};
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let entry_block = self.block_gen.next();
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let mut main_function = self.new_function_with_metadata(main_signature, entry_block);
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main_function.metadata.is_entry_point = true;
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self.current_module = Some(module);
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self.current_function = Some(main_function);
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self.current_block = Some(entry_block);
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// 関数スコープの SlotRegistry を初期化するよ(観測専用)。
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// main 関数用のスロット登録箱として使う想定だよ。
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self.current_slot_registry =
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Some(crate::mir::region::function_slot_registry::FunctionSlotRegistry::new());
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// Region 観測レイヤ: main 関数の FunctionRegion を 1 つ作っておくよ。
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crate::mir::region::observer::observe_function_region(self);
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// Hint: scope enter at function entry (id=0 for main)
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self.hint_scope_enter(0);
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if std::env::var("NYASH_BUILDER_SAFEPOINT_ENTRY")
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.ok()
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.as_deref()
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== Some("1")
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{
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self.emit_instruction(MirInstruction::Safepoint)?;
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}
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Ok(())
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}
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pub(super) fn lower_root(&mut self, ast: ASTNode) -> Result<ValueId, String> {
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// Pre-index static methods to enable safe fallback for bare calls in using-prepended code
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let snapshot = ast.clone();
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// Phase A: collect declarations in one pass (symbols available to lowering)
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self.index_declarations(&snapshot);
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// Decide root mode (App vs Script) once per module based on presence of static box Main.main
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// true => App mode (Main.main is entry)
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// false => Script/Test mode (top-level Program runs sequentially)
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let is_app_mode = self
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.root_is_app_mode
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.unwrap_or_else(|| has_main_static(&snapshot));
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self.root_is_app_mode = Some(is_app_mode);
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// Phase B: top-level program lowering with declaration-first pass
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match ast {
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ASTNode::Program { statements, .. } => {
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use crate::ast::ASTNode as N;
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// First pass: lower declarations (static boxes except Main, and instance boxes)
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let mut main_static: Option<(String, std::collections::HashMap<String, ASTNode>)> =
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None;
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for st in &statements {
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if let N::BoxDeclaration {
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name,
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methods,
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is_static,
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fields,
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constructors,
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weak_fields,
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..
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} = st
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{
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if *is_static {
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if name == "Main" {
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main_static = Some((name.clone(), methods.clone()));
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} else {
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// Script/Test モードでは static box の lowering は exprs.rs 側に任せる
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if is_app_mode {
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// Dev: trace which static box is being lowered (env-gated)
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self.trace_compile(format!("lower static box {}", name));
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// 🎯 箱理論: 各static boxに専用のコンパイルコンテキストを作成
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// これにより、using文や前のboxからのメタデータ汚染を構造的に防止
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// スコープを抜けると自動的にコンテキストが破棄される
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{
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let ctx = super::context::BoxCompilationContext::new();
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self.compilation_context = Some(ctx);
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// Lower all static methods into standalone functions: BoxName.method/Arity
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for (mname, mast) in methods.iter() {
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if let N::FunctionDeclaration { params, body, .. } =
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mast
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{
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let func_name = format!(
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"{}.{}{}",
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name,
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mname,
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format!("/{}", params.len())
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);
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self.lower_static_method_as_function(
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func_name,
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params.clone(),
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body.clone(),
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)?;
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self.static_method_index
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.entry(mname.clone())
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.or_insert_with(Vec::new)
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.push((name.clone(), params.len()));
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}
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}
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}
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// 🎯 箱理論: コンテキストをクリア(スコープ終了で自動破棄)
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// これにより、次のstatic boxは汚染されていない状態から開始される
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self.compilation_context = None;
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}
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}
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} else {
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// Instance box: register type and lower instance methods/ctors as functions
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self.user_defined_boxes.insert(name.clone());
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self.build_box_declaration(
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name.clone(),
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methods.clone(),
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fields.clone(),
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weak_fields.clone(),
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)?;
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for (ctor_key, ctor_ast) in constructors.iter() {
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if let N::FunctionDeclaration { params, body, .. } = ctor_ast {
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// Keep constructor function name as "Box.birth/N" where ctor_key already encodes arity.
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// ctor_key format comes from parser as "birth/<arity>".
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let func_name = format!("{}.{}", name, ctor_key);
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self.lower_method_as_function(
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func_name,
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name.clone(),
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params.clone(),
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body.clone(),
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)?;
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}
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}
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for (mname, mast) in methods.iter() {
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if let N::FunctionDeclaration {
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params,
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body,
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is_static,
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..
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} = mast
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{
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if !*is_static {
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let func_name = format!(
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"{}.{}{}",
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name,
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mname,
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format!("/{}", params.len())
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);
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self.lower_method_as_function(
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func_name,
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name.clone(),
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params.clone(),
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body.clone(),
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)?;
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}
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}
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}
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}
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}
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}
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// Second pass: mode-dependent entry lowering
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if is_app_mode {
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// App モード: Main.main をエントリとして扱う
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if let Some((box_name, methods)) = main_static {
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self.build_static_main_box(box_name, methods)
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} else {
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// 理論上は起こりにくいが、安全のため Script モードと同じフォールバックにする
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self.cf_block(statements)
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}
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} else {
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// Script/Test モード: トップレベル Program をそのまま順次実行
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self.cf_block(statements)
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}
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}
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other => self.build_expression(other),
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}
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}
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pub(super) fn finalize_module(&mut self, result_value: ValueId) -> Result<MirModule, String> {
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// Hint: scope leave at function end (id=0 for main)
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self.hint_scope_leave(0);
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if let Some(block_id) = self.current_block {
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if let Some(ref mut function) = self.current_function {
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if let Some(block) = function.get_block_mut(block_id) {
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if !block.is_terminated() {
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block.add_instruction(MirInstruction::Return {
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value: Some(result_value),
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});
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}
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if let Some(mt) = self.value_types.get(&result_value).cloned() {
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function.signature.return_type = mt;
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}
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}
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}
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}
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let mut module = self.current_module.take().unwrap();
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let mut function = self.current_function.take().unwrap();
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function.metadata.value_types = self.value_types.clone();
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// Phase 84-2: Copy命令型伝播(return型推論の前に実行)
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//
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// Loop exit や If merge の edge copy で発生する型欠如を解消する。
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// Copy チェーン: v1 → v2 → v3 で v1 の型が既知なら v2, v3 にも伝播。
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CopyTypePropagator::propagate(&function, &mut self.value_types);
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// Phase 82-5: lifecycle.rs バグ修正 - terminator の Return のみをチェック
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// 問題: instructions を先に走査すると、中間値(const void 等)を誤って推論対象にしてしまう
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// 解決: terminator の Return のみをチェックし、実際の戻り値を正しく推論する
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if matches!(
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function.signature.return_type,
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super::MirType::Void | super::MirType::Unknown
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) {
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let mut inferred: Option<super::MirType> = None;
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for (_bid, bb) in function.blocks.iter() {
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// Phase 82-5: instructions 走査を削除、terminator の Return のみをチェック
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if let Some(super::MirInstruction::Return { value: Some(v) }) = &bb.terminator {
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if let Some(mt) = self.value_types.get(v).cloned() {
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inferred = Some(mt);
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break;
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}
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// Phase 65.5: TypeHintPolicy 使用(箱化モジュール)
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// Phase 67: P3-C 経路を GenericTypeResolver に委譲
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let hint = if TypeHintPolicy::is_target(&function.signature.name) {
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TypeHintPolicy::extract_phi_type_hint(&function, *v)
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} else {
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None
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};
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// Phase 83: P3-D 既知メソッド戻り値型推論(P3-C より先に試行)
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//
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// P3-D は「既知メソッドの戻り値型」を直接推論する。
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// BoxCall の method 名から TypeAnnotationBox と同じマッピングで型を取得。
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if hint.is_none() {
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if let Some(mt) =
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MethodReturnHintBox::resolve_for_return(&function, *v, &self.value_types)
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{
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if std::env::var("NYASH_P3D_DEBUG").is_ok() {
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eprintln!(
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"[lifecycle/p3d] {} type inferred via MethodReturnHintBox: {:?}",
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function.signature.name, mt
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);
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}
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inferred = Some(mt);
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break;
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}
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}
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// Phase 84-3: P4 PHI + Copy グラフ型推論(P3-C より先に試行)
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//
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// PHI + Copy の小グラフを DFS 探索し、1 種類の型に収束する場合のみ返す。
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// これにより Loop edge copy / If merge 後の型推論が解決できる。
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if hint.is_none() {
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let phi_resolver = PhiTypeResolver::new(&function, &self.value_types);
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if let Some(mt) = phi_resolver.resolve(*v) {
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if std::env::var("NYASH_P4_DEBUG").is_ok() {
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eprintln!(
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"[lifecycle/p4] {} type inferred via PhiTypeResolver: {:?}",
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function.signature.name, mt
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);
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}
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inferred = Some(mt);
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break;
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}
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}
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// Phase 67: P3-C 対象なら GenericTypeResolver を優先使用
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if hint.is_none() && TypeHintPolicy::is_p3c_target(&function.signature.name) {
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if let Some(mt) =
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GenericTypeResolver::resolve_from_phi(&function, *v, &self.value_types)
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{
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if std::env::var("NYASH_P3C_DEBUG").is_ok() {
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eprintln!(
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"[lifecycle/p3c] {} type inferred via GenericTypeResolver: {:?}",
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function.signature.name, mt
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);
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}
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inferred = Some(mt);
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break;
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}
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}
|
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// Phase 84-5: if_phi.rs 完全削除後の安全ガード
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#[cfg(debug_assertions)]
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{
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panic!(
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"[phase84-5] Type inference failed for {:?} in function {}\n\
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This should not happen after Phase 84-4 completion.\n\
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Please check: PhiTypeResolver, BoxCall type registration, CopyTypePropagator",
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v, function.signature.name
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);
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}
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#[cfg(not(debug_assertions))]
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{
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eprintln!(
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"[phase84-5/warning] Type inference failed for {:?} in {}, using Unknown fallback",
|
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v, function.signature.name
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);
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inferred = Some(MirType::Unknown);
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||
}
|
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}
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||
}
|
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if let Some(mt) = inferred {
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function.signature.return_type = mt;
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}
|
||
}
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// Dev-only verify: NewBox → birth() invariant (warn if missing)
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// Stage‑B 用トグル: NYASH_STAGEB_DEV_VERIFY=0 のときは StageBDriverBox だけ警告をスキップする。
|
||
if crate::config::env::using_is_dev() {
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||
let stageb_dev_verify_on = config::env::stageb_dev_verify_enabled();
|
||
let mut warn_count = 0usize;
|
||
for (_bid, bb) in function.blocks.iter() {
|
||
let insns = &bb.instructions;
|
||
let mut idx = 0usize;
|
||
while idx < insns.len() {
|
||
if let MirInstruction::NewBox {
|
||
dst,
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box_type,
|
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args,
|
||
} = &insns[idx]
|
||
{
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// Phase 71-SSA 71-11.2: StageBDriverBox is a static box → skip birth warning unconditionally
|
||
// Static boxes don't follow NewBox→birth pattern by design
|
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if box_type == "StageBDriverBox" {
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idx += 1;
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continue;
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}
|
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// Skip StringBox (literal optimization path)
|
||
if box_type != "StringBox" {
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let expect_tail = format!("{}.birth/{}", box_type, args.len());
|
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// Look ahead up to 3 instructions for either BoxCall("birth") on dst or Global(expect_tail)
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let mut ok = false;
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let mut j = idx + 1;
|
||
let mut last_const_name: Option<String> = None;
|
||
while j < insns.len() && j <= idx + 3 {
|
||
match &insns[j] {
|
||
MirInstruction::BoxCall {
|
||
box_val, method, ..
|
||
} => {
|
||
if method == "birth" && box_val == dst {
|
||
ok = true;
|
||
break;
|
||
}
|
||
}
|
||
MirInstruction::Const { value, .. } => {
|
||
if let super::ConstValue::String(s) = value {
|
||
last_const_name = Some(s.clone());
|
||
}
|
||
}
|
||
MirInstruction::Call { func: _, .. } => {
|
||
// If immediately preceded by matching Const String, accept
|
||
if let Some(prev) = last_const_name.as_ref() {
|
||
if prev == &expect_tail {
|
||
ok = true;
|
||
break;
|
||
}
|
||
}
|
||
// Heuristic: in some forms, builder may reuse a shared const; best-effort only
|
||
}
|
||
_ => {}
|
||
}
|
||
j += 1;
|
||
}
|
||
if !ok {
|
||
eprintln!("[warn] dev verify: NewBox {} at v{} not followed by birth() call (expect {})", box_type, dst, expect_tail);
|
||
warn_count += 1;
|
||
}
|
||
}
|
||
}
|
||
idx += 1;
|
||
}
|
||
}
|
||
if warn_count > 0 {
|
||
eprintln!(
|
||
"[warn] dev verify: NewBox→birth invariant warnings: {}",
|
||
warn_count
|
||
);
|
||
}
|
||
}
|
||
|
||
module.add_function(function);
|
||
|
||
// Dev stub: provide condition_fn when missing to satisfy predicate calls in JSON lexers
|
||
// Returns integer 1 (truthy) and accepts one argument (unused).
|
||
//
|
||
// NOTE:
|
||
// - MirFunction::new() はシグネチャの params に応じて
|
||
// [ValueId(0)..ValueId(param_count-1)] を事前に予約する。
|
||
// - ここでは追加の next_value_id()/params.push() は行わず、
|
||
// 予約済みのパラメータ集合をそのまま使う。
|
||
if module.functions.get("condition_fn").is_none() {
|
||
let sig = FunctionSignature {
|
||
name: "condition_fn".to_string(),
|
||
params: vec![MirType::Integer], // accept one i64-like arg
|
||
return_type: MirType::Integer,
|
||
effects: EffectMask::PURE,
|
||
};
|
||
let entry = BasicBlockId::new(0);
|
||
let mut f = self.new_function_with_metadata(sig, entry);
|
||
// body: const 1; return it(FunctionEmissionBox を使用)
|
||
let one = crate::mir::function_emission::emit_const_integer(&mut f, entry, 1);
|
||
crate::mir::function_emission::emit_return_value(&mut f, entry, one);
|
||
module.add_function(f);
|
||
}
|
||
|
||
// main 関数スコープの Region スタックをポップするよ。
|
||
crate::mir::region::observer::pop_function_region(self);
|
||
|
||
// main 関数スコープの SlotRegistry を解放するよ。
|
||
self.current_slot_registry = None;
|
||
|
||
Ok(module)
|
||
}
|
||
}
|