chore: refactor some APIs

The scanner returns a slice of pointers to tokens instead of a
slice of tokens. The parser now pass the initial node context.

1 files changed, 12 insertions, 3 deletions

diff --git a/parser/node.go b/parser/node.go
index d2f13ef..b6e34cd 100644
--- a/parser/node.go
+++ b/parser/node.go
@@ -3,9 +3,9 @@ package parser
 import "github.com/gnolang/parscan/scanner"
 
 type Node struct {
-	Child         []*Node // sub-tree nodes
-	scanner.Token         // token at origin of the node
-	Kind                  // Node kind, depends on the language spec
+	Child          []*Node // sub-tree nodes
+	*scanner.Token         // token at origin of the node
+	Kind                   // Node kind, depends on the language spec
 }
 
 // TODO: remove it in favor of Walk2
@@ -39,3 +39,12 @@ func (n *Node) Walk2(a *Node, i int, in, out func(*Node, *Node, int) bool) (stop
 	}
 	return
 }
+
+func (n *Node) RemoveChild(i int) {
+	n.Child = append(n.Child[:i], n.Child[i+1:]...)
+}
+
+func (n *Node) InsertChild(node *Node, i int) {
+	n.Child = append(n.Child[:i+1], n.Child[i:]...)
+	n.Child[i] = node
+}