48 lines
1.2 KiB
Plaintext
48 lines
1.2 KiB
Plaintext
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# Diamond Problem（菱形継承問題）テスト
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print("=== Diamond Problem Test ===")
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# 中間層
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box Middle from StringBox {
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init { middle_data }
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birth(content) {
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from StringBox.birth(content)
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me.middle_data = "middle"
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print("Middle.birth called")
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}
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override toString() {
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print("Middle.toString called")
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return "Middle[" + from StringBox.toString() + "]"
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}
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}
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# 多重委譲（問題のあるパターン）
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box Diamond from Middle, StringBox {
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init { diamond_data }
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birth(content) {
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from Middle.birth(content)
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# from StringBox.birth(content) # これも必要？
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me.diamond_data = "diamond"
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print("Diamond.birth called")
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}
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override toString() {
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print("Diamond.toString called")
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# どちらも StringBox.toString() を呼ぶ
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local a = from Middle.toString() # Middle -> StringBox
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local b = from StringBox.toString() # 直接 StringBox
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return "Diamond[" + a + " | " + b + "]"
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}
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}
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# テスト実行
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print("\n--- Creating diamond instance ---")
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local diamond = new Diamond("test")
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print("\n--- Calling toString ---")
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print(diamond.toString())
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print("\n=== Test completed ===")
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