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5
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1 record TreeMethods {n m : Level } {a : Set n } {t : Set m } (treeImpl : Set n ) : Set (m Level.!$\sqcup$! n) where
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0
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2 field
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5
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3 putImpl : treeImpl !$\rightarrow$! a !$\rightarrow$! (treeImpl !$\rightarrow$! t) !$\rightarrow$! t
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4 getImpl : treeImpl !$\rightarrow$! (treeImpl !$\rightarrow$! Maybe a !$\rightarrow$! t) !$\rightarrow$! t
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0
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5
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5
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6 record Tree {n m : Level } {a : Set n } {t : Set m } (treeImpl : Set n ) : Set (m Level.!$\sqcup$! n) where
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0
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7 field
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8 tree : treeImpl
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9 treeMethods : TreeMethods {n} {m} {a} {t} treeImpl
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5
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10 putTree : a !$\rightarrow$! (Tree treeImpl !$\rightarrow$! t) !$\rightarrow$! t
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11 putTree d next = putImpl (treeMethods ) tree d (\t1 !$\rightarrow$! next (record {tree = t1 ; treeMethods = treeMethods} ))
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12 getTree : (Tree treeImpl !$\rightarrow$! Maybe a !$\rightarrow$! t) !$\rightarrow$! t
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13 getTree next = getImpl (treeMethods ) tree (\t1 d !$\rightarrow$! next (record {tree = t1 ; treeMethods = treeMethods} ) d )
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0
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14
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