Mercurial > hg > Papers > 2021 > soto-prosym
view Paper/src/bt_verif/invariant.agda.replaced @ 5:339fb67b4375
INIT rbt.agda
author | soto <soto@cr.ie.u-ryukyu.ac.jp> |
---|---|
date | Sun, 07 Nov 2021 00:51:16 +0900 |
parents | |
children |
line wrap: on
line source
treeInvariant : {n : Level} {A : Set n} !$\rightarrow$! (tree : bt A) !$\rightarrow$! Set treeInvariant leaf = !$\top$! treeInvariant (node key value leaf leaf) = !$\top$! treeInvariant (node key value leaf n@(node key!$\_{1}$! value!$\_{1}$! t!$\_{1}$! t!$\_{2}$!)) = (key < key!$\_{1}$!) !$\wedge$! treeInvariant n treeInvariant (node key value n@(node key!$\_{1}$! value!$\_{1}$! t t!$\_{1}$!) leaf) = treeInvariant n !$\wedge$! (key < key!$\_{1}$!) treeInvariant (node key value n@(node key!$\_{1}$! value!$\_{1}$! t t!$\_{1}$!) m@(node key!$\_{2}$! value!$\_{2}$! t!$\_{2}$! t!$\_{3}$!)) = treeInvariant n !$\wedge$! (key < key!$\_{1}$!) !$\wedge$! (key!$\_{1}$! < key!$\_{2}$!) !$\wedge$! treeInvariant m stackInvariant : {n : Level} {A : Set n} !$\rightarrow$! (tree : bt A) !$\rightarrow$! (stack : List (bt A)) !$\rightarrow$! Set n stackInvariant {_} {A} _ [] = Lift _ !$\top$! stackInvariant {_} {A} tree (tree1 !$\text{::}$! [] ) = tree1 !$\equiv$! tree stackInvariant {_} {A} tree (x !$\text{::}$! tail @ (node key value leaf right !$\text{::}$! _) ) = (right !$\equiv$! x) !$\wedge$! stackInvariant tree tail stackInvariant {_} {A} tree (x !$\text{::}$! tail @ (node key value left leaf !$\text{::}$! _) ) = (left !$\equiv$! x) !$\wedge$! stackInvariant tree tail stackInvariant {_} {A} tree (x !$\text{::}$! tail @ (node key value left right !$\text{::}$! _ )) = ( (left !$\equiv$! x) !$\wedge$! stackInvariant tree tail) ∨ ( (right !$\equiv$! x) !$\wedge$! stackInvariant tree tail) stackInvariant {_} {A} tree s = Lift _ !$\bot$!