Result is failed by default

gigaparsec.go

@@ -10,23 +10,23 @@ import (
 )
 
 type Result[In, Out any] struct {
-	consumed, failed bool
-	value            Out
-	next             State[In]
-	message          Message
+	consumed, succeeded bool
+	value               Out
+	next                State[In]
+	message             Message
 }
 
 func Fail[In, Out any](consumed bool, msg Message) Result[In, Out] {
 	return Result[In, Out]{
-		consumed: consumed,
-		failed:   true,
-		message:  msg,
+		consumed:  consumed,
+		succeeded: false,
+		message:   msg,
 	}
 }
 
-func (r Result[In, Out]) Failed() (ok, consumed bool, msg Message) {
-	ok = r.failed
-	if ok {
+func (r Result[In, Out]) Failed() (failed, consumed bool, msg Message) {
+	failed = !r.succeeded
+	if failed {
 		consumed = r.consumed
 		msg = r.message
 	}
@@ -35,17 +35,17 @@ func (r Result[In, Out]) Failed() (ok, consumed bool, msg Message) {
 
 func Succeed[In, Out any](consumed bool, value Out, next State[In], msg Message) Result[In, Out] {
 	return Result[In, Out]{
-		failed:   false,
-		value:    value,
-		consumed: consumed,
-		next:     next,
-		message:  msg,
+		succeeded: true,
+		value:     value,
+		consumed:  consumed,
+		next:      next,
+		message:   msg,
 	}
 }
 
-func (r Result[In, Out]) Succeeded() (ok, consumed bool, value Out, next State[In], msg Message) {
-	ok = !r.failed
-	if ok {
+func (r Result[In, Out]) Succeeded() (succeeded, consumed bool, value Out, next State[In], msg Message) {
+	succeeded = r.succeeded
+	if succeeded {
 		consumed = r.consumed
 		value = r.value
 		next = r.next