restructure

runtime/interpreter.go

@@ -0,0 +1,31 @@
+package runtime
+
+import "git.red-panda.pet/pandaware/lox-go/ast"
+
+type Interpreter struct{}
+
+var _ ast.ExprVisitor = new(Interpreter)
+
+func NewInterpreter() *Interpreter {
+	return new(Interpreter)
+}
+
+// VisitBinaryExpr implements ast.ExprVisitor.
+func (i *Interpreter) VisitBinaryExpr(b *ast.BinaryExpr) any {
+	panic("unimplemented")
+}
+
+// VisitGroupingExpr implements ast.ExprVisitor.
+func (i *Interpreter) VisitGroupingExpr(g *ast.GroupingExpr) any {
+	panic("unimplemented")
+}
+
+// VisitLiteralExpr implements ast.ExprVisitor.
+func (i *Interpreter) VisitLiteralExpr(g *ast.LiteralExpr) any {
+	panic("unimplemented")
+}
+
+// VisitUnaryExpr implements ast.ExprVisitor.
+func (i *Interpreter) VisitUnaryExpr(g *ast.UnaryExpr) any {
+	panic("unimplemented")
+}

runtime/types.go

@@ -0,0 +1,33 @@
+package runtime
+
+//go:generate stringer -type LoxType -trimprefix LoxType
+type LoxType int
+
+const (
+	LoxTypeString LoxType = iota
+	LoxTypeNumber
+	LoxTypeBoolean
+	LoxTypeNil
+	LoxTypeUndefined
+)
+
+type LoxValue struct {
+	raw any
+}
+
+func (v *LoxValue) Type() LoxType {
+	switch v.raw.(type) {
+	case string:
+		return LoxTypeString
+	case float64, float32:
+		return LoxTypeNumber
+	case bool:
+		return LoxTypeBoolean
+	default:
+		return LoxTypeUndefined
+	}
+}
+
+func Value(v any) *LoxValue {
+	return &LoxValue{v}
+}