Expose eval.HasFailure

eval/eval.go

@@ -43,7 +43,7 @@ type evalCtx struct {
 	ports     []*port
 }
 
-func hasFailure(vs []Value) bool {
+func HasFailure(vs []Value) bool {
 	for _, v := range vs {
 		v, ok := v.(exitus)
 		if !ok {
@@ -95,7 +95,7 @@ func printExitus(e exitus) {
 }
 
 func PrintExituses(vs []Value) {
-	if !hasFailure(vs) {
+	if !HasFailure(vs) {
 		return
 	}
 	fmt.Print("Status: ")

eval/exec.go

@@ -159,7 +159,7 @@ func (c *closure) Exec(ec *evalCtx, args []Value) <-chan *stateUpdate {
 		}
 		// Ports are closed after executaion of closure is complete.
 		ec.closePorts()
-		if hasFailure(vs) {
+		if HasFailure(vs) {
 			// TODO(xiaq): Wrap the original failure
 			update <- newExitedStateUpdate(newFailure("chunk failure"))
 		} else {

eval/op.go

@@ -33,7 +33,7 @@ func combineChunk(ops []valuesOp) valuesOp {
 	f := func(ec *evalCtx) []Value {
 		for _, op := range ops {
 			s := op.f(ec)
-			if hasFailure(s) {
+			if HasFailure(s) {
 				return s
 			}
 		}

main.go

@@ -118,7 +118,7 @@ func script(fname string) {
 	vs, err := ev.Source(fname)
 	printError(err)
 	eval.PrintExituses(vs)
-	if err != nil {
+	if err != nil || eval.HasFailure(vs) {
 		os.Exit(1)
 	}
 }