Initial Dever 0.0.1

test/rust/fixtures/borrowed_call.dever

@@ -0,0 +1,31 @@
+type Holder { values: List<Int> }
+
+identity(values: List<Int>) (result: List<Int>) { result = values }
+
+measure(values: List<Int>) (result: Int) { result = length(values) }
+
+compare(values: List<Int>, size: Int) (same: Bool) { same = length(values) == size }
+
+selected(keep: true, values: List<Int>) (result: List<Int>) { result = values }
+selected(keep: other, values: List<Int>) (result: List<Int>) { result = [] }
+
+readField(holder: Holder) (result: List<Int>) {
+  result = selected(true, holder.values)
+}
+
+verify() (valid: Bool) {
+  values = [1, 2, 3]
+  direct = compare(values, measure(values))
+  holder = Holder { values = [4, 5] }
+  field = compare(holder.values, measure(holder.values))
+  items = [6]
+  forwarded = compare(identity(items), measure(identity(items)))
+  consumed = Holder { values = [7, 8, 9, 10] }
+  moved = readField(consumed)
+  reused = Holder { values = [11, 12] }
+  borrowed = readField(reused)
+  preserved = compare(reused.values, measure(borrowed))
+  repeated = Holder { values = [13, 14, 15] }
+  duplicated = compare(repeated.values, measure(selected(true, repeated.values)))
+  valid = direct and field and forwarded and length(moved) == 4 and preserved and duplicated
+}