use constant exportet errors

2 files changed, 8 insertions, 6 deletions

diff --git a/go/game/ai.go b/go/game/ai.go
index c55218e3..4860a13d 100644
--- a/go/game/ai.go
+++ b/go/game/ai.go
@@ -109,6 +109,8 @@ func selectRandomTargets(rand *rand.Rand, targets *Targets) error {
 	return nil
 }
 
+var ErrNoPath = errors.New("no path found")
+
 func (m *Map) generateMapGraphFor(u *Unit) *dijkstra.Graph {
 	graph := dijkstra.NewGraph()
 	for _, t := range m.AllTiles() {
@@ -179,7 +181,7 @@ func findPathTo(graph *dijkstra.Graph, u *Unit, pos Position) (dijkstra.BestPath
 
 func findPathToPermanent(graph *dijkstra.Graph, m *Map, u *Unit, target Permanent) (*dijkstra.BestPath, error) {
 	if target.Tile() == nil {
-		return nil, errors.New("no path found")
+		return nil, ErrNoPath
 	}
 
 	var bestPathToUnit *dijkstra.BestPath = nil
@@ -198,7 +200,7 @@ func findPathToPermanent(graph *dijkstra.Graph, m *Map, u *Unit, target Permanen
 	if bestPathToUnit != nil {
 		return bestPathToUnit, nil
 	} else {
-		return nil, errors.New("no path found")
+		return nil, ErrNoPath
 	}
 }
 
diff --git a/go/game/set.go b/go/game/set.go
index fe25e3a1..c4733423 100644
--- a/go/game/set.go
+++ b/go/game/set.go
@@ -2,7 +2,6 @@ package game
 
 import (
 	"errors"
-	"fmt"
 	"log"
 	"net/http"
 	"path"
@@ -25,6 +24,8 @@ const (
 	Exp1
 )
 
+var ErrUnknownSet = errors.New("Unknown set")
+
 func (si SetIdentifier) String() string {
 	switch si {
 	case Base:
@@ -119,7 +120,6 @@ func (set SetIdentifier) CardPaths() []string {
 }
 
 func SetListToSets(setList string) ([]SetIdentifier, error) {
-	var err error
 	sets := []SetIdentifier{}
 	setList = strings.Replace(setList, " ", "", 0)
 	setsRaw := strings.Split(setList, ",")
@@ -128,8 +128,8 @@ func SetListToSets(setList string) ([]SetIdentifier, error) {
 		if found {
 			sets = append(sets, set)
 		} else {
-			err = errors.New(fmt.Sprintf("Unknown set: %s", set))
+			return sets, ErrUnknownSet
 		}
 	}
-	return sets, err
+	return sets, nil
 }