Initial Dever 0.0.1

test/rust/fixtures/resource-performance.dever

@@ -0,0 +1,54 @@
+openClose(path: Text) (ok: Bool) {
+  file = dever.io.open(path)
+  alias = file
+  dever.io.close(alias)
+  ok = true
+}
+
+readBytes(path: Text, limit: Int) (bytes: Bytes) {
+  file = dever.io.open(path)
+  bytes = unpack(dever.io.read(file, limit))
+  dever.io.close(file)
+}
+
+unpack(state: dever.io.ReadState.Read(value)) (bytes: Bytes) { bytes = value }
+unpack(state: dever.io.ReadState.End) (bytes: Bytes) { bytes = dever.bytes.fromText("") }
+
+consume(path: Text, limit: Int) (total: Int) {
+  file = dever.io.open(path)
+  stream = dever.io.chunks(file, limit)
+  total = reduce(count, stream, 0)
+  dever.io.close(file)
+}
+
+resume(path: Text, limit: Int) (total: Int) {
+  file = dever.io.open(path)
+  stream = dever.io.chunks(file, limit)
+  alias = stream
+  head = reduceUntil(take, stream, 0)
+  total = reduce(count, alias, head)
+  close(stream)
+  close(alias)
+  dever.io.close(file)
+}
+
+closedStream(path: Text) (total: Int) {
+  file = dever.io.open(path)
+  stream = dever.io.chunks(file, 64)
+  dever.io.close(file)
+  total = reduce(count, stream, 0)
+}
+
+count(event: dever.io.ReadEvent.Chunk(bytes), state: Int) (total: Int) {
+  total = reduce(add, bytes, state)
+}
+count(event: dever.io.ReadEvent.Failed(message), state: Int) (total: Int) {
+  fail(dever.io.ReadEvent.Failed(message))
+}
+
+add(item: Int, state: Int) (total: Int) { total = state + item }
+
+take(event: dever.io.ReadEvent, state: Int) (total: Int, stop: Bool) {
+  total = count(event, state)
+  stop = true
+}