Initial Dever 0.0.1

test/rust/fixtures/ranges.dever

@@ -0,0 +1,49 @@
+type Port {
+  value: Int >= 1 and <= 65535
+}
+
+type Rate {
+  value: Decimal >= 0.0 and <= 1.0
+}
+
+type Row { value: Int }
+
+choose(value: Int >= 1 and <= 65535) (answer: Port) pure {
+  answer = Port { value = value }
+}
+choose(value: other) (answer: Port) pure {
+  answer = Port { value = 8080 }
+}
+
+step(value: Port) (answer: Int >= 2 and <= 65536) pure {
+  answer = value.value + 1
+}
+
+scaled(value: Rate) (answer: Decimal >= 0.0 and <= 100.0) pure {
+  answer = value.value * 100.0
+}
+
+total(values: List<Port>) (answer: Int) pure {
+  answer = sum(step, values)
+}
+
+rates(values: List<Rate>) (answer: Decimal) pure {
+  answer = sum(scaled, values)
+}
+
+apply(route: handler(value: Int >= 1) (answer: Int >= 2)) (answer: Int >= 2) {
+  answer = route(1)
+}
+
+constant(value: Int) (answer: Int) pure { answer = 2 }
+
+snapshot() (answer: Int >= 1) pure {
+  original = Row { value = 3 }
+  saved = original
+  original.value = 0
+  answer = saved.value
+}
+
+verify() (answer: Bool) {
+  answer = choose(0).value == 8080 and step(choose(65535)) == 65536 and total([choose(1), choose(2)]) == 5 and rates([Rate { value = 0.25 }, Rate { value = 0.5 }]) == 75.0 and snapshot() == 3 and apply(constant) == 2
+}