tomoaki
cc8b27a1aa
Remove automatic WeakNew conversion and enforce strict compile-time type checking for weak field assignments. Only 3 assignment types allowed: 1. Result of weak(x) call (WeakRef type) 2. Existing WeakRef variable (e.g., me.parent = other.parent) 3. Void/null (clear operation) **Implementation**: - Added MirType::WeakRef to type system (src/mir/types.rs) - Track WeakRef type in emit_weak_new() even in pure mode - Weak field reads return WeakRef without auto-upgrade - Removed automatic WeakNew conversion from field writes - Implemented check_weak_field_assignment() with actionable errors - Fixed null literal type tracking (Phase 285A1.1: Unknown → Void) **Testing**: - 5 test fixtures (3 OK, 2 NG cases) - all passing - Smoke test: phase285_weak_field_vm.sh - Error messages guide users to use weak() or null **Documentation**: - Updated lifecycle.md SSOT with weak field contract 🤖 Generated with Claude Code Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
12 lines
162 B
Plaintext
12 lines
162 B
Plaintext
box Node {
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init { weak parent }
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}
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static box Main {
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main() {
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local n = new Node()
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n.parent = 42 // ❌ Integer
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return 0
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}
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}
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