summaryrefslogtreecommitdiff
path: root/Jennisys/Jennisys/examples/oopsla12/List_synth.dfy
diff options
context:
space:
mode:
Diffstat (limited to 'Jennisys/Jennisys/examples/oopsla12/List_synth.dfy')
-rw-r--r--Jennisys/Jennisys/examples/oopsla12/List_synth.dfy146
1 files changed, 0 insertions, 146 deletions
diff --git a/Jennisys/Jennisys/examples/oopsla12/List_synth.dfy b/Jennisys/Jennisys/examples/oopsla12/List_synth.dfy
deleted file mode 100644
index 5cbfa10e..00000000
--- a/Jennisys/Jennisys/examples/oopsla12/List_synth.dfy
+++ /dev/null
@@ -1,146 +0,0 @@
-class List<T> {
- ghost var Repr: set<object>;
- ghost var list: seq<T>;
-
- var data: T;
- var next: List<T>;
-
- function Valid_repr(): bool
- reads *;
- {
- this in Repr &&
- null !in Repr &&
- (next != null ==> next in Repr && next.Repr <= Repr && this !in next.Repr)
- }
-
- function Valid_self(): bool
- reads *;
- {
- Valid_repr() &&
- (next == null ==> (list == [data] && list[0] == data) && |list| == 1) &&
- (next != null ==> list == [data] + next.list) &&
- (|list| > 0)
- }
-
- function Valid(): bool
- reads *;
- decreases Repr;
- {
- this.Valid_self() &&
- (next != null ==> next.Valid()) &&
- (next != null ==> next.Valid_self()) &&
- (next != null && next.next != null ==> next.next.Valid_self())
- }
-
-
- method Dupleton(p: T, q: T)
- modifies this;
- ensures fresh(Repr - {this});
- ensures Valid();
- ensures list == [p, q];
- ensures list[0] == p;
- ensures list[1] == q;
- ensures |list| == 2;
- {
- var gensym71 := new List<T>;
- gensym71.Singleton(q);
- this.data := p;
- this.list := [p, q];
- this.next := gensym71;
-
- // repr stuff
- this.Repr := {this} + this.next.Repr;
- // assert repr objects are valid (helps verification)
- assert gensym71.Valid();
- }
-
-
- method Elems() returns (ret: seq<T>)
- requires Valid();
- ensures fresh(Repr - old(Repr));
- ensures Valid();
- ensures ret == list;
- decreases Repr;
- {
- if (this.next == null) {
- ret := [this.data];
- } else {
- var x_5 := this.next.Elems();
- ret := [this.data] + x_5;
- }
- }
-
-
- method Find(n: T) returns (ret: bool)
- requires Valid();
- ensures fresh(Repr - old(Repr));
- ensures Valid();
- ensures ret == (n in list);
- decreases Repr;
- {
- if (this.next == null) {
- ret := n == this.data;
- } else {
- var x_6 := this.next.Find(n);
- ret := n == this.data || x_6;
- }
- }
-
-
- method Get(idx: int) returns (ret: T)
- requires Valid();
- requires 0 <= idx;
- requires idx < |list|;
- ensures fresh(Repr - old(Repr));
- ensures Valid();
- ensures ret == list[idx];
- decreases Repr;
- {
- if (this.next == null) {
- ret := this.data;
- } else {
- if (idx == 0) {
- ret := this.data;
- } else {
- var x_7 := this.next.Get(idx - 1);
- ret := x_7;
- }
- }
- }
-
-
- method Singleton(t: T)
- modifies this;
- ensures fresh(Repr - {this});
- ensures Valid();
- ensures list == [t];
- ensures list[0] == t;
- ensures |list| == 1;
- {
- this.data := t;
- this.list := [t];
- this.next := null;
-
- // repr stuff
- this.Repr := {this};
- }
-
-
- method Size() returns (ret: int)
- requires Valid();
- ensures fresh(Repr - old(Repr));
- ensures Valid();
- ensures ret == |list|;
- decreases Repr;
- {
- if (this.next == null) {
- ret := 1;
- } else {
- var x_8 := this.next.Size();
- ret := 1 + x_8;
- }
- }
-
-}
-
-