From be6cd2217b6bb1bb411d46ebd9d003dfd928af96 Mon Sep 17 00:00:00 2001
From: Mel <einebeere@gmail.com>
Date: Wed, 17 Aug 2022 00:07:35 +0000
Subject: Add different "say" outputs to VM

---
 pkg/lang/vm/output.go | 45 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 pkg/lang/vm/output.go

(limited to 'pkg/lang/vm/output.go')

diff --git a/pkg/lang/vm/output.go b/pkg/lang/vm/output.go
new file mode 100644
index 0000000..1ef2357
--- /dev/null
+++ b/pkg/lang/vm/output.go
@@ -0,0 +1,45 @@
+package vm
+
+type Output interface {
+	Write(message string) error
+}
+
+type EmptyOutput struct{}
+
+func NewEmptyOutput() *EmptyOutput {
+	return &EmptyOutput{}
+}
+
+func (o *EmptyOutput) Write(message string) error {
+	return nil
+}
+
+type GatheringOutput struct {
+	messages []string
+}
+
+func NewGatheringOutput() *GatheringOutput {
+	return &GatheringOutput{
+		messages: make([]string, 0, 8),
+	}
+}
+
+func (o *GatheringOutput) Messages() []string {
+	return o.messages
+}
+
+func (o *GatheringOutput) Write(message string) error {
+	o.messages = append(o.messages, message)
+	return nil
+}
+
+type ConsoleOutput struct{}
+
+func NewConsoleOutput() *ConsoleOutput {
+	return &ConsoleOutput{}
+}
+
+func (o *ConsoleOutput) Write(message string) error {
+	println(message)
+	return nil
+}
-- 
cgit 1.4.1