Added custom printers

repl/repl.go

@@ -1,6 +1,9 @@
 package repl
 
 import (
+	"io"
+	"reflect"
+	"slices"
 	"ucl.lmika.dev/ucl"
 )
 
@@ -11,16 +14,19 @@ type CommandOpt interface {
 type REPL struct {
 	inst *ucl.Inst
 
-	commandDocs map[string]Doc
+	commandDocs  map[string]Doc
+	typePrinters map[reflect.Type]func(w io.Writer, v any, brief bool) error
 }
 
 func New(opts ...ucl.InstOption) *REPL {
-	inst := ucl.New(opts...)
-
 	r := &REPL{
-		inst:        inst,
-		commandDocs: make(map[string]Doc),
+		commandDocs:  make(map[string]Doc),
+		typePrinters: make(map[reflect.Type]func(w io.Writer, v any, brief bool) error),
 	}
+
+	instOpts := append(slices.Clone(opts), ucl.WithCustomEchoPrinter(r.echoPrinter))
+	r.inst = ucl.New(instOpts...)
+
 	r.SetCommand("help", r.helpBuiltin, Doc{
 		Brief: "displays help about a command",
 		Usage: "[command]",
@@ -36,6 +42,8 @@ func New(opts ...ucl.InstOption) *REPL {
 		`,
 	})
 
+	AddTypePrinter(r, func(w io.Writer, t NoResults, concise bool) error { return nil })
+
 	return r
 }