initial commits

errors/errors.go

@@ -0,0 +1,19 @@
+package rfc8259errors
+
+import (
+	"sourcecode.social/reiver/go-erorr"
+)
+
+const (
+	ErrNilDestination      = erorr.Error("rfc8259: nil destination")
+	ErrNilRuneScanner      = erorr.Error("rfc8259: nil rune-scanner")
+	ErrUnexpectedEndOfFile = erorr.Error("rfc8259: unexpected end-of-file")
+)
+
+func ErrProblemReadingRune(err error) error {
+	return erorr.Errorf("rfc8259: JSON parser had a problem — problem reading rune: %w", err)
+}
+
+func ErrProblemUnreadingRune(err error, r rune) error {
+	return erorr.Errorf("rfc8259: JSON parser had an internal-error — problem unreading rune %q (%U): %w", r, r, err)
+}

number/number.go

@@ -0,0 +1,32 @@
+package rfc8259number
+
+import (
+	"fmt"
+
+	"sourcecode.social/reiver/go-opt"
+)
+
+type Number struct {
+	opt.Optional[string]
+}
+
+func Nothing() Number {
+	return Number{opt.Nothing[string]()}
+}
+
+func Something(value string) Number {
+	return Number{opt.Something(value)}
+}
+
+func (receiver Number) GoString() string {
+	switch receiver {
+	case Nothing():
+		return "rfc8259number.Nothing()"
+	default:
+		value, found := receiver.Get()
+		if !found {
+			return fmt.Sprintf("--INTERNAL-ERROR--")
+		}
+		return fmt.Sprintf("rfc8259number.Something(%#v)", value)
+	}
+}