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