78 lines
3.6 KiB
Plaintext
78 lines
3.6 KiB
Plaintext
// MethodCallHandlerBox - Handle Method calls (MirCall with Method callee)
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// Single Responsibility: Execute instance methods (e.g., array.length(), string.substring())
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using selfhost.vm.boxes.result_box as Result
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using selfhost.shared.common.string_helpers as StringHelpers
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using selfhost.vm.hakorune-vm.value_manager as ValueManagerBox
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using selfhost.vm.hakorune-vm.callee_parser as CalleeParserBox
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using selfhost.vm.hakorune-vm.args_extractor as ArgsExtractorBox
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using selfhost.vm.hakorune-vm.args_guard as ArgsGuardBox
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using selfhost.vm.hakorune-vm.receiver_guard as ReceiverGuardBox
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using selfhost.vm.hakorune-vm.json_field_extractor as JsonFieldExtractor
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using selfhost.shared.json.core.json_cursor as JsonCursorBox
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using selfhost.shared.host_bridge.host_bridge as HostBridge
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using selfhost.vm.hakorune-vm.core_bridge_ops as CoreBridgeOps
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static box MethodCallHandlerBox {
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// TTL: Delegation policy (Phase 20.17 — P1 audit complete)
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// - Delegated via CoreBridgeOps: Array(size/push/pop/get/set), Map(len/iterator/set/get)
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// - Local/HostBridge: string instance methods（substring/indexOf/lastIndexOf/dirname/join…）は
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// 文字列意味論の完全移行まで HostBridge に留める（20.18+ で段階移行予定）。
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// 正規化は最小限（length→size のみ）として drift を抑制する。
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// Handle Method call
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// mir_call_json: {"callee":{"type":"Method","receiver":X,"method":"name"},"args":[...]}
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// dst_reg: destination register (null if no return value)
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// regs: register MapBox
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// Returns: Result.Ok(0) or Result.Err(message)
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handle(mir_call_json, dst_reg, regs) {
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// Extract receiver ValueId from callee.receiver field
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local receiver_id = CalleeParserBox.extract_receiver(mir_call_json)
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if receiver_id == null {
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return Result.Err("method: receiver not found in callee")
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}
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// Extract method name from callee.method field
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local method_name = CalleeParserBox.extract_method(mir_call_json)
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if method_name == null {
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return Result.Err("method: method name not found in callee")
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}
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// Extract arguments from mir_call.args
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local args_array = ArgsExtractorBox.extract_and_load(mir_call_json, regs)
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local _g = ArgsGuardBox.ensure_no_nulls(args_array, method_name + "/" + StringHelpers.int_to_str(args_array.length()))
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if _g.is_Err() { return _g }
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// Build signature and guard
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local arg_count = args_array.length()
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local method_sig = method_name + "/" + StringHelpers.int_to_str(arg_count)
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// Load receiver and guard
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local receiver = ValueManagerBox.get(regs, receiver_id)
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local guard = ReceiverGuardBox.ensure_valid(receiver, method_sig, receiver_id)
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if guard.is_Err() { return guard }
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// Unified dispatch via HostBridge (Phase B):
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// Normalize a few well-known aliases to SSOT names (e.g., length -> size).
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local method_canon = method_name
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if method_canon == "length" { method_canon = "size" }
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// Core bridge handles collection metadata + semantics directly (Phase 20.16).
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// Delegate to CoreBridgeOps for Array/Map shortcuts to avoid drift.
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// TODO: Remove fallback once Core mir_call covers every method variant (size/push/pop/len/set/get).
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local core_shortcut = CoreBridgeOps.try_method_collection(method_canon, mir_call_json, args_array, dst_reg, regs, receiver_id)
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if core_shortcut != null {
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return core_shortcut
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}
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// Forward to HostBridge. PluginResolver performs the final resolution.
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local result_val = HostBridge.box_call(receiver, method_canon, args_array)
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// Store result in destination register
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if dst_reg != null {
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ValueManagerBox.set(regs, dst_reg, result_val)
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}
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return Result.Ok(0)
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}
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}
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