{"defs":[{"ctors":[{"fields":[],"name":"Nil"},{"fields":[{"k":"con","name":"Int"},{"k":"con","name":"IntList"}],"name":"Cons"}],"doc":"Recursive Int list — boxed.","kind":"type","name":"IntList"},{"body":{"arms":[{"body":{"lit":{"kind":"int","value":0},"t":"lit"},"pat":{"ctor":"Nil","fields":[],"p":"ctor"}},{"body":{"name":"h","t":"var"},"pat":{"ctor":"Cons","fields":[{"name":"h","p":"var"},{"name":"t","p":"var"}],"p":"ctor"}}],"scrutinee":{"name":"xs","t":"var"},"t":"match"},"doc":"Take ownership of an IntList; return its head if Cons, else 0. The tail is loaded as a pattern binder but never consumed — iter A dec's it at arm close. The outer cell is dec'd at fn return via iter B's Own-param emission.","kind":"fn","name":"head_or_zero","params":["xs"],"suppress":[{"because":"RC codegen test: exercises Iter B Own-param dec at fn return","code":"over-strict-mode"}],"type":{"effects":[],"k":"fn","param_modes":["own"],"params":[{"k":"con","name":"IntList"}],"ret":{"k":"con","name":"Int"}}},{"body":{"body":{"args":[{"args":[{"name":"xs","t":"var"}],"fn":{"name":"head_or_zero","t":"var"},"t":"app"}],"op":"io/print_int","t":"do"},"name":"xs","t":"let","value":{"args":[{"lit":{"kind":"int","value":11},"t":"lit"},{"args":[{"lit":{"kind":"int","value":22},"t":"lit"},{"args":[{"lit":{"kind":"int","value":33},"t":"lit"},{"args":[{"lit":{"kind":"int","value":44},"t":"lit"},{"args":[{"lit":{"kind":"int","value":55},"t":"lit"},{"args":[],"ctor":"Nil","t":"ctor","type":"IntList"}],"ctor":"Cons","t":"ctor","type":"IntList"}],"ctor":"Cons","t":"ctor","type":"IntList"}],"ctor":"Cons","t":"ctor","type":"IntList"}],"ctor":"Cons","t":"ctor","type":"IntList"}],"ctor":"Cons","t":"ctor","type":"IntList"}},"doc":"Build a 5-element IntList; pass to head_or_zero (transferring ownership); print the result.","kind":"fn","name":"main","params":[],"type":{"effects":["IO"],"k":"fn","params":[],"ret":{"k":"con","name":"Unit"}}}],"imports":[],"name":"rc_own_param_drop","schema":"ailang/v0"}
