找到源塊源塊是__MAIN塊或類型塊的最底下的邏輯塊，這個(gè)邏輯塊在調(diào)用樹里出現(xiàn)的在帶參模塊中之上。為了確定一個(gè)已知帶參塊的源塊，要確定哪個(gè)塊調(diào)用該帶參模塊。如果調(diào)用塊是_MAIN或類型塊，，它就是源塊。如果調(diào)用塊是任何其他類型(帶參模塊或功能塊)，對(duì)調(diào)用這個(gè)塊的塊應(yīng)用相同的測(cè)試。繼續(xù)回退調(diào)用樹直到_ MAIN塊或–個(gè)類型塊被找到。這是帶參塊的源塊。

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