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29 lines
556 B
Go
29 lines
556 B
Go
package render
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import (
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"fmt"
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"io"
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)
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// WriterTo is a renderer that renders a value to an io.Writer using the
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// WriteTo method.
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type WriterTo struct{}
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var _ Renderer = (*WriterTo)(nil)
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// Render renders a value to an io.Writer using the WriteTo method. If the value
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// does not implement io.WriterTo, ErrCannotRender is returned.
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func (wt *WriterTo) Render(w io.Writer, v any) error {
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x, ok := v.(io.WriterTo)
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if !ok {
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return ErrCannotRender
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}
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_, err := x.WriteTo(w)
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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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