Array literal can be used in array and slice

analyzer/literal.go

@@ -54,21 +54,29 @@ func (this *Tree) analyzeLiteralArray (
 	entity.Expression,
 	error,
 ) {
-	base, ok := this.reduceToBase(into).(*entity.TypeArray)
+	into = this.reduceToBase(into)
-	if !ok {
+	var elementType entity.Type
+	switch into.(type) {
+	case *entity.TypeArray:
+		into := into.(*entity.TypeArray)
+		if into.Length != len(literal.Elements) {
+			return nil, participle.Errorf (
+				literal.Pos, "expected %v elements",
+				into.Length)
+		}
+		elementType = into.Element
+		
+	case *entity.TypeSlice:
+		into := into.(*entity.TypeSlice)
+		elementType = into.Element
+	default:
 		return nil, participle.Errorf (
 			literal.Pos, "cannot use array literal as %v",
 			into)
 	}
 
-	if base.Length != len(literal.Elements) {
-		return nil, participle.Errorf (
-			literal.Pos, "expected %v elements",
-			base.Length)
-	}
-
 	for index, element := range literal.Elements {
-		element, err := this.analyzeExpression(base.Element, strict, element)
+		element, err := this.analyzeExpression(elementType, strict, element)
 		if err != nil { return nil, err }
 		literal.Elements[index] = element
 	}