move Positions and Comments into parser package

position/position.go

@@ -2,8 +2,6 @@ package position
 
 import (
 	"fmt"
-
-	"github.com/z7zmey/php-parser/node"
 )
 
 // Position represents node position
@@ -27,11 +25,3 @@ func NewPosition(StartLine int, EndLine int, StartPos int, EndPos int) *Position
 func (p Position) String() string {
 	return fmt.Sprintf("Pos{Line: %d-%d Pos: %d-%d}", p.StartLine, p.EndLine, p.StartPos, p.EndPos)
 }
-
-// Positions a collection of positions attached to nodes
-type Positions map[node.Node]*Position
-
-// AddPosition attaches a position to a node
-func (p Positions) AddPosition(node node.Node, position *Position) {
-	p[node] = position
-}

position/position_test.go

@@ -0,0 +1,19 @@
+package position_test
+
+import (
+	"testing"
+
+	"github.com/z7zmey/php-parser/position"
+)
+
+func TestPrintPosition(t *testing.T) {
+	pos := position.NewPosition(1, 1, 2, 5)
+
+	expected := "Pos{Line: 1-1 Pos: 2-5}"
+
+	actual := pos.String()
+
+	if expected != actual {
+		t.Errorf("expected and actual are not equal\n")
+	}
+}