stred

commit 6a77b63c3cd4edb992b94e42c5a222a1480a3f33
parent 773c5e115fbb4e8b432e95e02216af9b23415ca8
Author: Charlie Stanton <charlie@shtanton.xyz>
Date:   Thu, 20 Apr 2023 09:25:51 +0100

Add commands to append to and swap with the path and X registers

Diffstat:
M
main/command.go
 | 
28
++++++++++++++++++++++++++--
M
main/parse.go
 | 
8
++++++++

2 files changed, 34 insertions(+), 2 deletions(-)
diff --git a/main/command.go b/main/command.go
@@ -135,4 +135,28 @@ type Command interface {
 }
 
 type NoopCommand struct {}
-func (cmd NoopCommand) exec(state *ProgramState) {}
-\ No newline at end of file
+func (cmd NoopCommand) exec(state *ProgramState) {}
+
+type SwapXRegCommand struct {}
+func (cmd SwapXRegCommand) exec(state *ProgramState) {
+	v := state.value
+	state.value = state.xreg
+	state.xreg = v
+}
+
+type AppendXRegCommand struct {}
+func (cmd AppendXRegCommand) exec(state *ProgramState) {
+	state.xreg = append(state.xreg, state.value...)
+}
+
+type SwapPathCommand struct {}
+func (cmd SwapPathCommand) exec(state *ProgramState) {
+	v := state.value
+	state.value = state.path
+	state.path = v
+}
+
+type AppendPathCommand struct {}
+func (cmd AppendPathCommand) exec(state *ProgramState) {
+	state.path = append(state.path, state.value...)
+}
+\ No newline at end of file
diff --git a/main/parse.go b/main/parse.go
@@ -251,6 +251,14 @@ func (p *parser) parseBasicCommand(commandChar rune) Command {
 			return PrintLiteralsCommand {items: items}
 		case 'o':
 			return NoopCommand{}
+		case 'x':
+			return SwapXRegCommand{}
+		case 'X':
+			return AppendXRegCommand{}
+		case 'k':
+			return SwapPathCommand{}
+		case 'K':
+			return AppendPathCommand{}
 		default:
 			panic("Invalid command")
 	}