mirror of
https://github.com/jimeh/go-render.git
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35 lines
663 B
Go
35 lines
663 B
Go
package render
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import (
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"encoding"
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"fmt"
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"io"
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)
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// Binary can render values which implment the encoding.BinaryMarshaler
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// interface.
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type Binary struct{}
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var _ Renderer = (*Binary)(nil)
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// Render writes result of calling MarshalBinary() on v. If v does not implment
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// encoding.BinaryMarshaler the ErrCannotRander error will be returned.
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func (bm *Binary) Render(w io.Writer, v any) error {
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x, ok := v.(encoding.BinaryMarshaler)
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if !ok {
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return ErrCannotRender
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}
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b, err := x.MarshalBinary()
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if err != nil {
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return fmt.Errorf("%w: %w", Err, err)
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}
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_, err = w.Write(b)
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if err != nil {
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return fmt.Errorf("%w: %w", Err, err)
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}
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return nil
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}
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