feat(joinir): Phase 254-255 - Pattern 6 (ScanWithInit) + exit PHI DCE fix
## Phase 254: Pattern 6 (ScanWithInit) Detection & JoinIR Lowering
Pattern 6 detects index_of/find/contains-style loops:
- Loop condition: i < x.length()
- Loop body: if with method call condition + early return
- Step: i = i + 1
- Post-loop: return not-found value (-1)
Key features:
- Minimal lowering: main/loop_step/k_exit functions
- substring hoisted to init-time BoxCall
- Two k_exit jumps (found: i, not found: -1)
- Tests: phase254_p0_index_of_min.hako
## Phase 255 P0: Multi-param Loop CarrierInfo
Implemented CarrierInfo architecture for Pattern 6's 3-variable loop (s, ch, i):
- i: LoopState (header PHI + exit PHI)
- s, ch: ConditionOnly (header PHI only)
- Alphabetical ordering for determinism
- All 3 PHI nodes created correctly
- Eliminates "undefined ValueId" errors
## Phase 255 P1: Exit PHI DCE Fix
Prevents exit PHI from being deleted by DCE:
- PostLoopEarlyReturnStepBox emits post-loop guard
- if (i != -1) { return i } forces exit PHI usage
- Proven pattern from Pattern 2 (balanced_depth_scan)
- VM/LLVM backends working
## Test Results
✅ pattern254_p0_index_of_vm.sh: PASS (exit code 1)
✅ pattern254_p0_index_of_llvm_exe.sh: PASS (mock)
✅ Quick profile: json_lint_vm PASS (progresses past index_of)
✅ Pattern 1-5: No regressions
## Files Added
- src/mir/builder/control_flow/joinir/patterns/pattern6_scan_with_init.rs
- src/mir/join_ir/lowering/scan_with_init_minimal.rs
- apps/tests/phase254_p0_index_of_min.hako
- docs/development/current/main/phases/phase-254/README.md
- docs/development/current/main/phases/phase-255/README.md
🧠 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
This commit is contained in:
@ -92,6 +92,7 @@ impl BodyLocalDerivedEmitter {
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alloc_value,
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env,
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Some(body_local_env),
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None, // Phase 252: No static box context
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)?;
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instructions.extend(escape_cond_insts);
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@ -130,7 +131,7 @@ impl BodyLocalDerivedEmitter {
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let mut env_pre = env.clone();
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env_pre.insert(recipe.loop_counter_name.clone(), counter_pre);
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let (bounds_ok, bounds_insts) =
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lower_condition_to_joinir(bounds_ast, alloc_value, &env_pre, Some(body_local_env))?;
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lower_condition_to_joinir(bounds_ast, alloc_value, &env_pre, Some(body_local_env), None)?; // Phase 252: No static box context
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instructions.extend(bounds_insts);
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let guard = alloc_value();
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@ -81,7 +81,7 @@ pub fn emit_conditional_step_update(
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}
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// Phase 92 P2-2: Lower the condition expression with body-local support
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let (cond_id, cond_insts) = lower_condition_to_joinir(cond_ast, alloc_value, env, body_local_env).map_err(|e| {
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let (cond_id, cond_insts) = lower_condition_to_joinir(cond_ast, alloc_value, env, body_local_env, None).map_err(|e| {
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format!(
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"ConditionalStep invariant violated: condition must be pure expression for carrier '{}': {}",
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carrier_name, e
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@ -70,6 +70,33 @@ fn collect_variables_recursive(ast: &ASTNode, vars: &mut BTreeSet<String>) {
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ASTNode::Literal { .. } => {
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// Literals have no variables
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}
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// Phase 251 Fix: Handle complex condition expressions
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ASTNode::MethodCall { object, arguments, .. } => {
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// Recurse into object (e.g., 'arr' in 'arr.length()')
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collect_variables_recursive(object, vars);
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// Recurse into arguments (e.g., 'i' in 'arr.get(i)')
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for arg in arguments {
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collect_variables_recursive(arg, vars);
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}
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}
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ASTNode::FieldAccess { object, .. } => {
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// Recurse into object (e.g., 'obj' in 'obj.field')
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collect_variables_recursive(object, vars);
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}
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ASTNode::Index { target, index, .. } => {
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// Recurse into target (e.g., 'arr' in 'arr[i]')
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collect_variables_recursive(target, vars);
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// Recurse into index (e.g., 'i' in 'arr[i]')
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collect_variables_recursive(index, vars);
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}
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ASTNode::Call { callee, arguments, .. } => {
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// Recurse into callee (e.g., function references)
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collect_variables_recursive(callee, vars);
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// Recurse into arguments
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for arg in arguments {
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collect_variables_recursive(arg, vars);
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}
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}
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_ => {
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// Other AST nodes not expected in conditions
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}
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@ -192,4 +219,108 @@ mod tests {
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let vars = extract_condition_variables(&ast, &[]);
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assert_eq!(vars, vec!["x", "y", "z"]); // 'x' deduplicated
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}
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#[test]
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fn test_extract_method_call() {
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// AST: i < arr.length()
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let ast = ASTNode::BinaryOp {
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operator: BinaryOperator::Less,
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left: Box::new(ASTNode::Variable {
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name: "i".to_string(),
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span: Span::unknown(),
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}),
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right: Box::new(ASTNode::MethodCall {
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object: Box::new(ASTNode::Variable {
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name: "arr".to_string(),
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span: Span::unknown(),
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}),
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method: "length".to_string(),
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arguments: vec![],
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span: Span::unknown(),
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}),
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span: Span::unknown(),
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};
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let vars = extract_condition_variables(&ast, &["i".to_string()]);
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assert_eq!(vars, vec!["arr"]); // Should extract 'arr'
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}
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#[test]
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fn test_extract_field_access() {
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// AST: i < obj.count
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let ast = ASTNode::BinaryOp {
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operator: BinaryOperator::Less,
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left: Box::new(ASTNode::Variable {
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name: "i".to_string(),
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span: Span::unknown(),
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}),
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right: Box::new(ASTNode::FieldAccess {
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object: Box::new(ASTNode::Variable {
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name: "obj".to_string(),
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span: Span::unknown(),
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}),
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field: "count".to_string(),
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span: Span::unknown(),
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}),
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span: Span::unknown(),
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};
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let vars = extract_condition_variables(&ast, &["i".to_string()]);
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assert_eq!(vars, vec!["obj"]);
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}
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#[test]
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fn test_extract_index() {
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// AST: i < arr[j]
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let ast = ASTNode::BinaryOp {
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operator: BinaryOperator::Less,
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left: Box::new(ASTNode::Variable {
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name: "i".to_string(),
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span: Span::unknown(),
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}),
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right: Box::new(ASTNode::Index {
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target: Box::new(ASTNode::Variable {
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name: "arr".to_string(),
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span: Span::unknown(),
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}),
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index: Box::new(ASTNode::Variable {
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name: "j".to_string(),
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span: Span::unknown(),
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}),
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span: Span::unknown(),
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}),
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span: Span::unknown(),
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};
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let vars = extract_condition_variables(&ast, &["i".to_string()]);
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assert_eq!(vars, vec!["arr", "j"]); // Both 'arr' and 'j' (sorted)
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}
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#[test]
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fn test_extract_complex_method_call_with_args() {
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// AST: i < arr.get(j)
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let ast = ASTNode::BinaryOp {
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operator: BinaryOperator::Less,
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left: Box::new(ASTNode::Variable {
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name: "i".to_string(),
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span: Span::unknown(),
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}),
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right: Box::new(ASTNode::MethodCall {
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object: Box::new(ASTNode::Variable {
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name: "arr".to_string(),
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span: Span::unknown(),
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}),
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method: "get".to_string(),
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arguments: vec![ASTNode::Variable {
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name: "j".to_string(),
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span: Span::unknown(),
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}],
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span: Span::unknown(),
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}),
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span: Span::unknown(),
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};
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let vars = extract_condition_variables(&ast, &["i".to_string()]);
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assert_eq!(vars, vec!["arr", "j"]); // Both 'arr' and 'j' (sorted)
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}
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}
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@ -114,6 +114,8 @@ pub(crate) struct LoopWithBreakLoweringInputs<'a> {
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pub body_local_derived_recipe: Option<&'a BodyLocalDerivedRecipe>,
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/// Phase 107: Balanced depth-scan recipe (find_balanced_* family).
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pub balanced_depth_scan_recipe: Option<&'a BalancedDepthScanRecipe>,
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/// Phase 252: Name of the static box being lowered (for this.method(...) in break conditions)
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pub current_static_box_name: Option<String>,
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}
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/// Lower Pattern 2 (Loop with Conditional Break) to JoinIR
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@ -193,6 +195,7 @@ pub(crate) fn lower_loop_with_break_minimal(
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condition_only_recipe,
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body_local_derived_recipe,
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balanced_depth_scan_recipe,
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current_static_box_name, // Phase 252
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} = inputs;
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let mut body_local_env = body_local_env;
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@ -325,7 +328,7 @@ pub(crate) fn lower_loop_with_break_minimal(
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)
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});
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// Phase 169 / Phase 171-fix / Phase 240-EX / Phase 244: Lower condition
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// Phase 169 / Phase 171-fix / Phase 240-EX / Phase 244 / Phase 252: Lower condition
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let (cond_value, mut cond_instructions) = lower_header_condition(
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condition,
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env,
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@ -333,6 +336,7 @@ pub(crate) fn lower_loop_with_break_minimal(
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loop_var_name,
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i_param,
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&mut alloc_value,
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current_static_box_name.as_deref(), // Phase 252
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)?;
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// After condition lowering, allocate remaining ValueIds
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@ -510,7 +514,7 @@ pub(crate) fn lower_loop_with_break_minimal(
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}
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// ------------------------------------------------------------------
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// Phase 170-B / Phase 244 / Phase 92 P2-2: Lower break condition
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// Phase 170-B / Phase 244 / Phase 92 P2-2 / Phase 252: Lower break condition
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// ------------------------------------------------------------------
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// Phase 92 P2-2: Moved after body-local init to support body-local variable references
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let (break_cond_value, break_cond_instructions) = lower_break_condition(
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@ -521,6 +525,7 @@ pub(crate) fn lower_loop_with_break_minimal(
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i_param,
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&mut alloc_value,
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body_local_env.as_ref().map(|e| &**e), // Phase 92 P2-2: Pass body_local_env
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current_static_box_name.as_deref(), // Phase 252
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)?;
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// ------------------------------------------------------------------
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@ -28,6 +28,10 @@ fn make_scope_manager<'a>(
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}
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/// Lower the header condition.
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///
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/// # Phase 252: current_static_box_name Parameter
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///
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/// Added to support `this.method(...)` in header conditions for static boxes.
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pub(crate) fn lower_header_condition(
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condition: &ASTNode,
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env: &ConditionEnv,
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@ -35,6 +39,7 @@ pub(crate) fn lower_header_condition(
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loop_var_name: &str,
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loop_var_id: ValueId,
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alloc_value: &mut dyn FnMut() -> ValueId,
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current_static_box_name: Option<&str>, // Phase 252
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) -> Result<(ValueId, Vec<JoinInst>), String> {
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use crate::mir::join_ir::lowering::condition_lowering_box::ConditionLoweringBox;
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@ -59,6 +64,7 @@ pub(crate) fn lower_header_condition(
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loop_var_id,
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scope: &scope_manager,
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alloc_value,
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current_static_box_name: current_static_box_name.map(|s| s.to_string()), // Phase 252
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};
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match expr_lowerer.lower_condition(condition, &mut context) {
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@ -94,6 +100,10 @@ pub(crate) fn lower_header_condition(
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///
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/// Added `body_local_env` parameter to support break conditions that reference
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/// body-local variables (e.g., `ch == '"'` in escape patterns).
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///
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/// # Phase 252: current_static_box_name Parameter
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///
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/// Added to support `this.method(...)` in break conditions for static boxes.
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pub(crate) fn lower_break_condition(
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break_condition: &ASTNode,
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env: &ConditionEnv,
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@ -102,6 +112,7 @@ pub(crate) fn lower_break_condition(
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loop_var_id: ValueId,
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alloc_value: &mut dyn FnMut() -> ValueId,
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body_local_env: Option<&LoopBodyLocalEnv>, // Phase 92 P2-2
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current_static_box_name: Option<&str>, // Phase 252
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) -> Result<(ValueId, Vec<JoinInst>), String> {
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use crate::mir::join_ir::lowering::condition_lowering_box::ConditionLoweringBox;
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@ -126,6 +137,7 @@ pub(crate) fn lower_break_condition(
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loop_var_id,
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scope: &scope_manager,
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alloc_value,
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current_static_box_name: current_static_box_name.map(|s| s.to_string()), // Phase 252
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};
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let value_id = expr_lowerer
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@ -286,6 +286,7 @@ pub(crate) fn lower_loop_with_continue_minimal(
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loop_var_id: i_param,
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scope: &scope_manager,
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alloc_value: &mut alloc_value,
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current_static_box_name: None, // Phase 252: TODO - plumb through Pattern 3
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};
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match expr_lowerer.lower_condition(condition, &mut context) {
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@ -88,6 +88,7 @@ impl<'a> CascadingArgResolver<'a> {
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alloc_value,
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self.cond_env,
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None, // body-local not used for generic expressions
|
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None, // Phase 252: No static box context for argument lowering
|
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instructions,
|
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),
|
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}
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@ -182,6 +183,7 @@ impl MethodCallLowerer {
|
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alloc_value,
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env,
|
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None, // Phase 92 P2-2: No body-local for method call args
|
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None, // Phase 252: No static box context for method call args
|
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instructions,
|
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)?;
|
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lowered_args.push(arg_val);
|
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|
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@ -65,6 +65,7 @@ pub(crate) mod loop_view_builder; // Phase 33-23: Loop lowering dispatch
|
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pub mod loop_with_break_minimal; // Phase 188-Impl-2: Pattern 2 minimal lowerer
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pub mod loop_with_continue_minimal;
|
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pub mod method_call_lowerer; // Phase 224-B: MethodCall lowering (metadata-driven)
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pub mod user_method_policy; // Phase 252: User-defined method policy (SSOT for static box method whitelists)
|
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pub mod method_return_hint; // Phase 83: P3-D 既知メソッド戻り値型推論箱
|
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pub mod scope_manager; // Phase 231: Unified variable scope management // Phase 195: Pattern 4 minimal lowerer
|
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#[cfg(feature = "normalized_dev")]
|
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@ -74,6 +75,7 @@ pub(crate) mod step_schedule; // Phase 47-A: Generic step scheduler for P2/P3 (r
|
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pub mod loop_with_if_phi_if_sum; // Phase 213: Pattern 3 AST-based if-sum lowerer (Phase 242-EX-A: supports complex conditions)
|
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pub mod min_loop;
|
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pub mod simple_while_minimal; // Phase 188-Impl-1: Pattern 1 minimal lowerer
|
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pub mod scan_with_init_minimal; // Phase 254 P1: Pattern 6 minimal lowerer (index_of/find/contains)
|
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pub mod skip_ws;
|
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pub mod stage1_using_resolver;
|
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pub mod stageb_body;
|
||||
|
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357
src/mir/join_ir/lowering/scan_with_init_minimal.rs
Normal file
357
src/mir/join_ir/lowering/scan_with_init_minimal.rs
Normal file
@ -0,0 +1,357 @@
|
||||
//! Phase 254 P1: Pattern 6 (ScanWithInit) Minimal Lowerer
|
||||
//!
|
||||
//! Target: apps/tests/phase254_p0_index_of_min.hako
|
||||
//!
|
||||
//! Code:
|
||||
//! ```nyash
|
||||
//! static box StringUtils {
|
||||
//! index_of(s, ch) {
|
||||
//! local i = 0
|
||||
//! loop(i < s.length()) {
|
||||
//! if s.substring(i, i + 1) == ch {
|
||||
//! return i
|
||||
//! }
|
||||
//! i = i + 1
|
||||
//! }
|
||||
//! return -1
|
||||
//! }
|
||||
//! }
|
||||
//! ```
|
||||
//!
|
||||
//! Expected JoinIR:
|
||||
//! ```text
|
||||
//! fn main(s, ch, i):
|
||||
//! result = loop_step(s, ch, i)
|
||||
//! // Post-loop early return will be inserted by MirBuilder
|
||||
//!
|
||||
//! fn loop_step(s, ch, i):
|
||||
//! // 1. Check exit condition: i >= s.length()
|
||||
//! len = StringBox.length(s)
|
||||
//! exit_cond = (i >= len)
|
||||
//! Jump(k_exit, [-1], cond=exit_cond) // Not found case
|
||||
//!
|
||||
//! // 2. Calculate i_plus_1 for substring
|
||||
//! i_plus_1 = i + 1
|
||||
//!
|
||||
//! // 3. Hoist MethodCall(substring) to init-time BoxCall
|
||||
//! cur = StringBox.substring(s, i, i_plus_1)
|
||||
//!
|
||||
//! // 4. Check match condition
|
||||
//! match = (cur == ch)
|
||||
//! Jump(k_exit, [i], cond=match) // Found case
|
||||
//!
|
||||
//! // 5. Tail recursion
|
||||
//! Call(loop_step, [s, ch, i_plus_1])
|
||||
//!
|
||||
//! fn k_exit(i_exit):
|
||||
//! return i_exit
|
||||
//! ```
|
||||
//!
|
||||
//! ## Design Notes
|
||||
//!
|
||||
//! This is a MINIMAL P0 implementation targeting index_of pattern specifically.
|
||||
//! Key features:
|
||||
//! - substring is emitted as BoxCall (init-time, not condition whitelist)
|
||||
//! - Two Jump instructions to k_exit (not found: -1, found: i)
|
||||
//! - Step must be 1 (P0 restriction)
|
||||
//! - not_found_return_lit must be -1 (P0 restriction)
|
||||
|
||||
use crate::mir::join_ir::lowering::join_value_space::JoinValueSpace;
|
||||
use crate::mir::join_ir::{
|
||||
BinOpKind, CompareOp, ConstValue, JoinFuncId, JoinFunction, JoinInst, JoinModule, MirLikeInst,
|
||||
};
|
||||
|
||||
/// Lower Pattern 6 (ScanWithInit) to JoinIR
|
||||
///
|
||||
/// # Phase 254 P1: Pure JoinIR Fragment Generation
|
||||
///
|
||||
/// This version generates JoinIR using **JoinValueSpace** for unified ValueId allocation.
|
||||
/// It uses the Param region (100+) for function parameters and Local region (1000+) for
|
||||
/// temporary values.
|
||||
///
|
||||
/// ## Design Philosophy
|
||||
///
|
||||
/// Following Pattern 1's architecture:
|
||||
/// - **Pure transformer**: No side effects, only JoinIR generation
|
||||
/// - **Reusable**: Works in any context with proper boundary
|
||||
/// - **Testable**: Can test JoinIR independently
|
||||
///
|
||||
/// ## Boundary Contract
|
||||
///
|
||||
/// This function returns a JoinModule with:
|
||||
/// - **Input slots**: main() params for (s, ch, i)
|
||||
/// - **Caller responsibility**: Create JoinInlineBoundary to map params to host variables
|
||||
/// - **Exit binding**: k_exit param receives found index or -1
|
||||
///
|
||||
/// # Arguments
|
||||
///
|
||||
/// * `join_value_space` - Unified ValueId allocator (Phase 202-A)
|
||||
///
|
||||
/// # Returns
|
||||
///
|
||||
/// * `JoinModule` - Successfully lowered to JoinIR
|
||||
pub(crate) fn lower_scan_with_init_minimal(
|
||||
join_value_space: &mut JoinValueSpace,
|
||||
) -> JoinModule {
|
||||
let mut join_module = JoinModule::new();
|
||||
|
||||
// ==================================================================
|
||||
// Function IDs allocation
|
||||
// ==================================================================
|
||||
let main_id = JoinFuncId::new(0);
|
||||
let loop_step_id = JoinFuncId::new(1);
|
||||
let k_exit_id = JoinFuncId::new(2);
|
||||
|
||||
// ==================================================================
|
||||
// ValueId allocation
|
||||
// ==================================================================
|
||||
// main() params/locals
|
||||
// Phase 255 P0: Loop variable MUST be first, then alphabetical order [ch, s]
|
||||
// (CarrierInfo sorts carriers alphabetically for determinism)
|
||||
let i_main_param = join_value_space.alloc_param(); // loop index
|
||||
let ch_main_param = join_value_space.alloc_param(); // needle character (alphabetically first)
|
||||
let s_main_param = join_value_space.alloc_param(); // haystack string (alphabetically second)
|
||||
let loop_result = join_value_space.alloc_local(); // result from loop_step
|
||||
|
||||
// loop_step params/locals
|
||||
// Phase 255 P0: Loop variable MUST be first, then alphabetical order [ch, s]
|
||||
let i_step_param = join_value_space.alloc_param(); // loop index
|
||||
let ch_step_param = join_value_space.alloc_param(); // needle (alphabetically first)
|
||||
let s_step_param = join_value_space.alloc_param(); // haystack (alphabetically second)
|
||||
let len = join_value_space.alloc_local(); // s.length()
|
||||
let exit_cond = join_value_space.alloc_local(); // i >= len
|
||||
let const_minus_1 = join_value_space.alloc_local(); // -1 for not found
|
||||
let const_1 = join_value_space.alloc_local(); // 1 for increment
|
||||
let i_plus_1 = join_value_space.alloc_local(); // i + 1
|
||||
let cur = join_value_space.alloc_local(); // substring result
|
||||
let match_cond = join_value_space.alloc_local(); // cur == ch
|
||||
|
||||
// k_exit params
|
||||
let i_exit_param = join_value_space.alloc_param(); // exit parameter (index or -1)
|
||||
|
||||
// ==================================================================
|
||||
// main() function
|
||||
// ==================================================================
|
||||
let mut main_func = JoinFunction::new(
|
||||
main_id,
|
||||
"main".to_string(),
|
||||
vec![i_main_param, ch_main_param, s_main_param], // Phase 255 P0: [i, ch, s] alphabetical
|
||||
);
|
||||
|
||||
// result = loop_step(i, ch, s) // Phase 255 P0: alphabetical order
|
||||
main_func.body.push(JoinInst::Call {
|
||||
func: loop_step_id,
|
||||
args: vec![i_main_param, ch_main_param, s_main_param], // Phase 255 P0: [i, ch, s] alphabetical
|
||||
k_next: None,
|
||||
dst: Some(loop_result),
|
||||
});
|
||||
|
||||
// Return loop_result (found index or -1)
|
||||
main_func.body.push(JoinInst::Ret { value: Some(loop_result) });
|
||||
|
||||
join_module.add_function(main_func);
|
||||
|
||||
// ==================================================================
|
||||
// loop_step(i, ch, s) function
|
||||
// ==================================================================
|
||||
// Phase 255 P0: Loop variable first, then alphabetical [ch, s]
|
||||
let mut loop_step_func = JoinFunction::new(
|
||||
loop_step_id,
|
||||
"loop_step".to_string(),
|
||||
vec![i_step_param, ch_step_param, s_step_param], // Phase 255 P0: [i, ch, s] alphabetical
|
||||
);
|
||||
|
||||
// 1. len = s.length()
|
||||
loop_step_func
|
||||
.body
|
||||
.push(JoinInst::Compute(MirLikeInst::BoxCall {
|
||||
dst: Some(len),
|
||||
box_name: "StringBox".to_string(),
|
||||
method: "length".to_string(),
|
||||
args: vec![s_step_param],
|
||||
}));
|
||||
|
||||
// 2. exit_cond = (i >= len)
|
||||
loop_step_func
|
||||
.body
|
||||
.push(JoinInst::Compute(MirLikeInst::Compare {
|
||||
dst: exit_cond,
|
||||
op: CompareOp::Ge,
|
||||
lhs: i_step_param,
|
||||
rhs: len,
|
||||
}));
|
||||
|
||||
// 3. const -1
|
||||
loop_step_func
|
||||
.body
|
||||
.push(JoinInst::Compute(MirLikeInst::Const {
|
||||
dst: const_minus_1,
|
||||
value: ConstValue::Integer(-1),
|
||||
}));
|
||||
|
||||
// 4. Jump(k_exit, [-1], cond=exit_cond) - not found case
|
||||
loop_step_func.body.push(JoinInst::Jump {
|
||||
cont: k_exit_id.as_cont(),
|
||||
args: vec![const_minus_1],
|
||||
cond: Some(exit_cond),
|
||||
});
|
||||
|
||||
// 5. i_plus_1 = i + 1
|
||||
loop_step_func
|
||||
.body
|
||||
.push(JoinInst::Compute(MirLikeInst::Const {
|
||||
dst: const_1,
|
||||
value: ConstValue::Integer(1),
|
||||
}));
|
||||
|
||||
loop_step_func
|
||||
.body
|
||||
.push(JoinInst::Compute(MirLikeInst::BinOp {
|
||||
dst: i_plus_1,
|
||||
op: BinOpKind::Add,
|
||||
lhs: i_step_param,
|
||||
rhs: const_1,
|
||||
}));
|
||||
|
||||
// 6. cur = s.substring(i, i_plus_1) - init-time BoxCall
|
||||
loop_step_func
|
||||
.body
|
||||
.push(JoinInst::Compute(MirLikeInst::BoxCall {
|
||||
dst: Some(cur),
|
||||
box_name: "StringBox".to_string(),
|
||||
method: "substring".to_string(),
|
||||
args: vec![s_step_param, i_step_param, i_plus_1],
|
||||
}));
|
||||
|
||||
// 7. match_cond = (cur == ch)
|
||||
loop_step_func
|
||||
.body
|
||||
.push(JoinInst::Compute(MirLikeInst::Compare {
|
||||
dst: match_cond,
|
||||
op: CompareOp::Eq,
|
||||
lhs: cur,
|
||||
rhs: ch_step_param,
|
||||
}));
|
||||
|
||||
// 8. Jump(k_exit, [i], cond=match_cond) - found case
|
||||
loop_step_func.body.push(JoinInst::Jump {
|
||||
cont: k_exit_id.as_cont(),
|
||||
args: vec![i_step_param],
|
||||
cond: Some(match_cond),
|
||||
});
|
||||
|
||||
// 9. Call(loop_step, [i_plus_1, ch, s]) - tail recursion
|
||||
// Phase 255 P0: Loop variable first, then alphabetical [ch, s]
|
||||
loop_step_func.body.push(JoinInst::Call {
|
||||
func: loop_step_id,
|
||||
args: vec![i_plus_1, ch_step_param, s_step_param], // Phase 255 P0: [i_plus_1, ch, s] alphabetical
|
||||
k_next: None, // CRITICAL: None for tail call
|
||||
dst: None,
|
||||
});
|
||||
|
||||
join_module.add_function(loop_step_func);
|
||||
|
||||
// ==================================================================
|
||||
// k_exit(i_exit) function
|
||||
// ==================================================================
|
||||
let mut k_exit_func = JoinFunction::new(k_exit_id, "k_exit".to_string(), vec![i_exit_param]);
|
||||
|
||||
// Return i_exit (found index or -1)
|
||||
k_exit_func.body.push(JoinInst::Ret {
|
||||
value: Some(i_exit_param),
|
||||
});
|
||||
|
||||
join_module.add_function(k_exit_func);
|
||||
|
||||
// Set entry point
|
||||
join_module.entry = Some(main_id);
|
||||
|
||||
eprintln!("[joinir/pattern6] Generated JoinIR for ScanWithInit Pattern");
|
||||
eprintln!("[joinir/pattern6] Functions: main, loop_step, k_exit");
|
||||
eprintln!("[joinir/pattern6] BoxCall: substring (init-time, not condition whitelist)");
|
||||
|
||||
join_module
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
|
||||
#[test]
|
||||
fn test_lower_scan_with_init_minimal() {
|
||||
let mut join_value_space = JoinValueSpace::new();
|
||||
|
||||
let join_module = lower_scan_with_init_minimal(&mut join_value_space);
|
||||
|
||||
// main + loop_step + k_exit の3関数
|
||||
assert_eq!(join_module.functions.len(), 3);
|
||||
|
||||
// Entry が main(0) に設定されている
|
||||
assert_eq!(join_module.entry, Some(JoinFuncId::new(0)));
|
||||
|
||||
// k_exit 関数が取れる
|
||||
let k_exit_func = join_module
|
||||
.functions
|
||||
.get(&JoinFuncId::new(2))
|
||||
.expect("k_exit function should exist");
|
||||
assert_eq!(k_exit_func.name, "k_exit");
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_loop_step_has_substring_box_call() {
|
||||
let mut join_value_space = JoinValueSpace::new();
|
||||
|
||||
let join_module = lower_scan_with_init_minimal(&mut join_value_space);
|
||||
|
||||
// loop_step 関数を取得
|
||||
let loop_step = join_module
|
||||
.functions
|
||||
.get(&JoinFuncId::new(1))
|
||||
.expect("loop_step function should exist");
|
||||
|
||||
// BoxCall(substring) が含まれることを確認
|
||||
let has_substring = loop_step.body.iter().any(|inst| {
|
||||
matches!(
|
||||
inst,
|
||||
JoinInst::Compute(MirLikeInst::BoxCall { method, .. })
|
||||
if method == "substring"
|
||||
)
|
||||
});
|
||||
|
||||
assert!(
|
||||
has_substring,
|
||||
"loop_step should contain substring BoxCall"
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_loop_step_has_exit_jumps() {
|
||||
let mut join_value_space = JoinValueSpace::new();
|
||||
|
||||
let join_module = lower_scan_with_init_minimal(&mut join_value_space);
|
||||
|
||||
// loop_step 関数を取得
|
||||
let loop_step = join_module
|
||||
.functions
|
||||
.get(&JoinFuncId::new(1))
|
||||
.expect("loop_step function should exist");
|
||||
|
||||
// Jump(k_exit, ...) が2つ含まれることを確認
|
||||
let exit_jump_count = loop_step
|
||||
.body
|
||||
.iter()
|
||||
.filter(|inst| {
|
||||
matches!(
|
||||
inst,
|
||||
JoinInst::Jump { cont, .. }
|
||||
if *cont == JoinFuncId::new(2).as_cont()
|
||||
)
|
||||
})
|
||||
.count();
|
||||
|
||||
assert_eq!(
|
||||
exit_jump_count, 2,
|
||||
"loop_step should have 2 exit jumps"
|
||||
);
|
||||
}
|
||||
}
|
||||
304
src/mir/join_ir/lowering/user_method_policy.rs
Normal file
304
src/mir/join_ir/lowering/user_method_policy.rs
Normal file
@ -0,0 +1,304 @@
|
||||
//! Phase 252: User-Defined Method Policy Box
|
||||
//!
|
||||
//! This box provides a Single Source of Truth (SSOT) for determining whether
|
||||
//! user-defined static box methods are allowed in JoinIR contexts.
|
||||
//!
|
||||
//! ## Design Philosophy
|
||||
//!
|
||||
//! **Box-First Design**: UserMethodPolicy is a single-responsibility box that
|
||||
//! answers one question: "Can this static box method be safely lowered to JoinIR?"
|
||||
//!
|
||||
//! **Metadata-Driven**: Uses a policy table to determine allowed methods.
|
||||
//! NO method name hardcoding in lowering logic - all decisions made here.
|
||||
//!
|
||||
//! **Fail-Fast**: If a method is not in the policy table, immediately returns false.
|
||||
//! No silent fallbacks or guessing.
|
||||
//!
|
||||
//! **Future Extension**: This SSOT can be moved to .hako annotations or nyash.toml
|
||||
//! in the future without breaking lowering logic.
|
||||
//!
|
||||
//! ## Supported Static Boxes
|
||||
//!
|
||||
//! - **StringUtils**: String utility functions (trim, character checks, etc.)
|
||||
//!
|
||||
//! ## Example Usage
|
||||
//!
|
||||
//! ```ignore
|
||||
//! // Check if StringUtils.is_whitespace is allowed in condition
|
||||
//! if UserMethodPolicy::allowed_in_condition("StringUtils", "is_whitespace") {
|
||||
//! // Lower this.is_whitespace(...) to JoinIR
|
||||
//! }
|
||||
//! ```
|
||||
|
||||
/// Phase 252: User-Defined Method Policy Box
|
||||
///
|
||||
/// Provides metadata for user-defined static box methods to determine
|
||||
/// their eligibility for JoinIR lowering in different contexts.
|
||||
pub struct UserMethodPolicy;
|
||||
|
||||
impl UserMethodPolicy {
|
||||
/// Check if a user-defined method is allowed in loop condition context
|
||||
///
|
||||
/// # Requirements for Condition Context
|
||||
///
|
||||
/// - Method must be pure (no side effects)
|
||||
/// - Method should return boolean (for use in conditions)
|
||||
/// - Method should be deterministic (same inputs → same outputs)
|
||||
///
|
||||
/// # Arguments
|
||||
///
|
||||
/// * `box_name` - Name of the static box (e.g., "StringUtils")
|
||||
/// * `method_name` - Name of the method (e.g., "is_whitespace")
|
||||
///
|
||||
/// # Returns
|
||||
///
|
||||
/// * `true` - Method is whitelisted for condition context
|
||||
/// * `false` - Method is not whitelisted or unknown
|
||||
///
|
||||
/// # Example
|
||||
///
|
||||
/// ```ignore
|
||||
/// // Loop condition: loop(i < n && not this.is_whitespace(ch))
|
||||
/// assert!(UserMethodPolicy::allowed_in_condition("StringUtils", "is_whitespace"));
|
||||
/// assert!(!UserMethodPolicy::allowed_in_condition("StringUtils", "trim_start"));
|
||||
/// ```
|
||||
pub fn allowed_in_condition(box_name: &str, method_name: &str) -> bool {
|
||||
match box_name {
|
||||
"StringUtils" => Self::stringutils_allowed_in_condition(method_name),
|
||||
_ => false, // Unknown static box - fail-fast
|
||||
}
|
||||
}
|
||||
|
||||
/// Check if a user-defined method is allowed in LoopBodyLocal init context
|
||||
///
|
||||
/// # Requirements for Init Context
|
||||
///
|
||||
/// - Method must be pure (no side effects)
|
||||
/// - Method can return any type (strings, integers, etc.)
|
||||
/// - Method should be deterministic
|
||||
///
|
||||
/// # Arguments
|
||||
///
|
||||
/// * `box_name` - Name of the static box (e.g., "StringUtils")
|
||||
/// * `method_name` - Name of the method (e.g., "trim_start")
|
||||
///
|
||||
/// # Returns
|
||||
///
|
||||
/// * `true` - Method is whitelisted for init context
|
||||
/// * `false` - Method is not whitelisted or unknown
|
||||
///
|
||||
/// # Example
|
||||
///
|
||||
/// ```ignore
|
||||
/// // LoopBodyLocal init: local ch = s.substring(i, i + 1)
|
||||
/// // (substring is allowed in init but not in condition)
|
||||
/// assert!(UserMethodPolicy::allowed_in_init("StringUtils", "trim_start"));
|
||||
/// ```
|
||||
pub fn allowed_in_init(box_name: &str, method_name: &str) -> bool {
|
||||
match box_name {
|
||||
"StringUtils" => Self::stringutils_allowed_in_init(method_name),
|
||||
_ => false, // Unknown static box - fail-fast
|
||||
}
|
||||
}
|
||||
|
||||
// ========================================================================
|
||||
// StringUtils Policy Table
|
||||
// ========================================================================
|
||||
|
||||
/// StringUtils methods allowed in condition context
|
||||
///
|
||||
/// All methods here are pure boolean-returning functions suitable for
|
||||
/// use in loop conditions and conditional expressions.
|
||||
///
|
||||
/// # StringUtils Source
|
||||
///
|
||||
/// See: `apps/lib/json_native/utils/string.hako`
|
||||
fn stringutils_allowed_in_condition(method_name: &str) -> bool {
|
||||
matches!(
|
||||
method_name,
|
||||
// Character classification (pure boolean functions)
|
||||
"is_whitespace" // ch == " " or ch == "\t" or ...
|
||||
| "is_digit" // ch == "0" or ch == "1" or ...
|
||||
| "is_hex_digit" // is_digit(ch) or ch == "a" or ...
|
||||
| "is_alpha" // (ch >= "a" and ch <= "z") or ...
|
||||
| "is_alphanumeric" // is_alpha(ch) or is_digit(ch)
|
||||
|
||||
// String validation (pure boolean functions)
|
||||
| "is_integer" // Checks if string represents an integer
|
||||
| "is_empty_or_whitespace" // trim(s).length() == 0
|
||||
|
||||
// String matching (pure boolean functions)
|
||||
| "starts_with" // s.substring(0, prefix.length()) == prefix
|
||||
| "ends_with" // s.substring(s.length() - suffix.length(), ...) == suffix
|
||||
| "contains" // index_of_string(s, substr) != -1
|
||||
)
|
||||
}
|
||||
|
||||
/// StringUtils methods allowed in init context
|
||||
///
|
||||
/// All methods here are pure functions but may return non-boolean types
|
||||
/// (strings, integers). Suitable for LoopBodyLocal initialization.
|
||||
///
|
||||
/// # StringUtils Source
|
||||
///
|
||||
/// See: `apps/lib/json_native/utils/string.hako`
|
||||
fn stringutils_allowed_in_init(method_name: &str) -> bool {
|
||||
matches!(
|
||||
method_name,
|
||||
// Whitespace handling (pure string functions)
|
||||
"trim" // s.trim() (VM StringBox method)
|
||||
| "trim_start" // Remove leading whitespace
|
||||
| "trim_end" // Remove trailing whitespace
|
||||
|
||||
// String search (pure integer-returning functions)
|
||||
| "index_of" // First occurrence of character (-1 if not found)
|
||||
| "last_index_of" // Last occurrence of character (-1 if not found)
|
||||
| "index_of_string" // First occurrence of substring (-1 if not found)
|
||||
|
||||
// String transformation (pure string functions)
|
||||
| "to_upper" // Convert string to uppercase
|
||||
| "to_lower" // Convert string to lowercase
|
||||
| "char_to_upper" // Convert single character to uppercase
|
||||
| "char_to_lower" // Convert single character to lowercase
|
||||
|
||||
// String manipulation (pure functions)
|
||||
| "join" // Join array elements with separator
|
||||
| "split" // Split string by separator
|
||||
|
||||
// Numeric parsing (pure functions)
|
||||
| "parse_float" // Parse floating-point number (currently identity)
|
||||
| "parse_integer" // Parse integer from string
|
||||
|
||||
// Character classification (also allowed in init)
|
||||
| "is_whitespace"
|
||||
| "is_digit"
|
||||
| "is_hex_digit"
|
||||
| "is_alpha"
|
||||
| "is_alphanumeric"
|
||||
| "is_integer"
|
||||
| "is_empty_or_whitespace"
|
||||
| "starts_with"
|
||||
| "ends_with"
|
||||
| "contains"
|
||||
)
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
|
||||
// ===== Condition Context Tests =====
|
||||
|
||||
#[test]
|
||||
fn test_stringutils_character_classification_in_condition() {
|
||||
// Pure boolean character classification methods should be allowed
|
||||
assert!(UserMethodPolicy::allowed_in_condition("StringUtils", "is_whitespace"));
|
||||
assert!(UserMethodPolicy::allowed_in_condition("StringUtils", "is_digit"));
|
||||
assert!(UserMethodPolicy::allowed_in_condition("StringUtils", "is_hex_digit"));
|
||||
assert!(UserMethodPolicy::allowed_in_condition("StringUtils", "is_alpha"));
|
||||
assert!(UserMethodPolicy::allowed_in_condition("StringUtils", "is_alphanumeric"));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_stringutils_validation_in_condition() {
|
||||
// Pure boolean validation methods should be allowed
|
||||
assert!(UserMethodPolicy::allowed_in_condition("StringUtils", "is_integer"));
|
||||
assert!(UserMethodPolicy::allowed_in_condition("StringUtils", "is_empty_or_whitespace"));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_stringutils_matching_in_condition() {
|
||||
// Pure boolean matching methods should be allowed
|
||||
assert!(UserMethodPolicy::allowed_in_condition("StringUtils", "starts_with"));
|
||||
assert!(UserMethodPolicy::allowed_in_condition("StringUtils", "ends_with"));
|
||||
assert!(UserMethodPolicy::allowed_in_condition("StringUtils", "contains"));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_stringutils_string_functions_not_in_condition() {
|
||||
// String-returning functions should NOT be allowed in condition
|
||||
assert!(!UserMethodPolicy::allowed_in_condition("StringUtils", "trim"));
|
||||
assert!(!UserMethodPolicy::allowed_in_condition("StringUtils", "trim_start"));
|
||||
assert!(!UserMethodPolicy::allowed_in_condition("StringUtils", "trim_end"));
|
||||
assert!(!UserMethodPolicy::allowed_in_condition("StringUtils", "to_upper"));
|
||||
assert!(!UserMethodPolicy::allowed_in_condition("StringUtils", "to_lower"));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_stringutils_search_not_in_condition() {
|
||||
// Integer-returning search functions should NOT be allowed in condition
|
||||
assert!(!UserMethodPolicy::allowed_in_condition("StringUtils", "index_of"));
|
||||
assert!(!UserMethodPolicy::allowed_in_condition("StringUtils", "last_index_of"));
|
||||
assert!(!UserMethodPolicy::allowed_in_condition("StringUtils", "index_of_string"));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_unknown_static_box_in_condition() {
|
||||
// Unknown static boxes should fail-fast
|
||||
assert!(!UserMethodPolicy::allowed_in_condition("UnknownBox", "some_method"));
|
||||
assert!(!UserMethodPolicy::allowed_in_condition("MathUtils", "abs"));
|
||||
}
|
||||
|
||||
// ===== Init Context Tests =====
|
||||
|
||||
#[test]
|
||||
fn test_stringutils_all_pure_methods_in_init() {
|
||||
// All pure methods should be allowed in init (more permissive than condition)
|
||||
// Character classification
|
||||
assert!(UserMethodPolicy::allowed_in_init("StringUtils", "is_whitespace"));
|
||||
assert!(UserMethodPolicy::allowed_in_init("StringUtils", "is_digit"));
|
||||
|
||||
// String manipulation
|
||||
assert!(UserMethodPolicy::allowed_in_init("StringUtils", "trim"));
|
||||
assert!(UserMethodPolicy::allowed_in_init("StringUtils", "trim_start"));
|
||||
assert!(UserMethodPolicy::allowed_in_init("StringUtils", "trim_end"));
|
||||
assert!(UserMethodPolicy::allowed_in_init("StringUtils", "to_upper"));
|
||||
assert!(UserMethodPolicy::allowed_in_init("StringUtils", "to_lower"));
|
||||
|
||||
// String search
|
||||
assert!(UserMethodPolicy::allowed_in_init("StringUtils", "index_of"));
|
||||
assert!(UserMethodPolicy::allowed_in_init("StringUtils", "last_index_of"));
|
||||
assert!(UserMethodPolicy::allowed_in_init("StringUtils", "index_of_string"));
|
||||
|
||||
// Numeric parsing
|
||||
assert!(UserMethodPolicy::allowed_in_init("StringUtils", "parse_integer"));
|
||||
assert!(UserMethodPolicy::allowed_in_init("StringUtils", "parse_float"));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_unknown_static_box_in_init() {
|
||||
// Unknown static boxes should fail-fast
|
||||
assert!(!UserMethodPolicy::allowed_in_init("UnknownBox", "some_method"));
|
||||
assert!(!UserMethodPolicy::allowed_in_init("MathUtils", "sqrt"));
|
||||
}
|
||||
|
||||
// ===== Real-World Pattern Tests =====
|
||||
|
||||
#[test]
|
||||
fn test_trim_end_pattern() {
|
||||
// Phase 252 P0: StringUtils.trim_end/1 pattern
|
||||
// loop(i >= 0) { if not this.is_whitespace(s.substring(i, i + 1)) { break } ... }
|
||||
|
||||
// is_whitespace should be allowed in condition (boolean check)
|
||||
assert!(UserMethodPolicy::allowed_in_condition("StringUtils", "is_whitespace"));
|
||||
|
||||
// trim_end itself should NOT be allowed in condition (string function)
|
||||
assert!(!UserMethodPolicy::allowed_in_condition("StringUtils", "trim_end"));
|
||||
|
||||
// But trim_end should be allowed in init
|
||||
assert!(UserMethodPolicy::allowed_in_init("StringUtils", "trim_end"));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_index_of_pattern() {
|
||||
// Pattern: local pos = this.index_of(s, ch)
|
||||
// index_of returns integer (-1 or index), not boolean
|
||||
|
||||
// Should NOT be allowed in condition
|
||||
assert!(!UserMethodPolicy::allowed_in_condition("StringUtils", "index_of"));
|
||||
|
||||
// But should be allowed in init
|
||||
assert!(UserMethodPolicy::allowed_in_init("StringUtils", "index_of"));
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user