1 files changed, 16 insertions, 4 deletions

diff --git a/main/command.go b/main/command.go
index bad5b1e..91cb5e4 100644
--- a/main/command.go
+++ b/main/command.go
@@ -47,10 +47,10 @@ func (cmd SequenceCommand) exec(state *ProgramState) {
 	}
 }
 
-type AppendCommand struct {
+type AppendLiteralCommand struct {
 	values []WalkValue
 }
-func (cmd AppendCommand) exec(state *ProgramState) {
+func (cmd AppendLiteralCommand) exec(state *ProgramState) {
 	for _, value := range cmd.values {
 		state.space = append(state.space, WalkItem {
 			path: nil,
@@ -59,10 +59,10 @@ func (cmd AppendCommand) exec(state *ProgramState) {
 	}
 }
 
-type PrependCommand struct {
+type PrependLiteralCommand struct {
 	values []WalkValue
 }
-func (cmd PrependCommand) exec(state *ProgramState) {
+func (cmd PrependLiteralCommand) exec(state *ProgramState) {
 	var newItems []WalkItem
 	for _, value := range cmd.values {
 		newItems = append(newItems, WalkItem {
@@ -73,6 +73,18 @@ func (cmd PrependCommand) exec(state *ProgramState) {
 	state.space = append(newItems, state.space...)
 }
 
+type NextCommand struct {}
+func (cmd NextCommand) exec(state *ProgramState) {
+	nextItem := <- state.in
+	state.space = []WalkItem{nextItem}
+}
+
+type AppendNextCommand struct {}
+func (cmd AppendNextCommand) exec(state *ProgramState) {
+	nextItem := <- state.in
+	state.space = append(state.space, nextItem)
+}
+
 type PrintLiteralsCommand struct {
 	items []WalkItem
 }