Add full merge command

1 files changed, 31 insertions, 2 deletions

diff --git a/main/command.go b/main/command.go
index 38e1c95..e795333 100644
--- a/main/command.go
+++ b/main/command.go
@@ -138,9 +138,38 @@ func (cmd MergeCommand) String() string {
 	return "m"
 }
 
-type FullMergeCommand struct {}
+type FullMergeCommand struct {
+	subex subex.Transducer
+}
 func (cmd FullMergeCommand) exec(state *ProgramState) {
-	panic("Unimplemented")
+	_, notOk := runSubex(cmd.subex, state.value)
+	if notOk || state.end {
+		state.pc++
+		return
+	}
+
+	for {
+		item, err := state.Read()
+		if err != nil {
+			panic("Missing next value")
+		}
+
+		_, nonTerminal := runSubex(cmd.subex, []walk.Value{item.Value})
+
+		state.value = append(
+			state.value[:len(state.value) - 1],
+			walk.Merge(state.value[len(state.value) - 1], item.Value)...
+		)
+
+		if !nonTerminal && item.End {
+			state.prevStart = item.PrevStart
+			state.start = item.Start
+			state.end = item.End
+			state.nextEnd = item.NextEnd
+			state.pc += 2
+			return
+		}
+	}
 }
 func (cmd FullMergeCommand) String() string {
 	return "M"