asciigoat's core library
https://asciigoat.org/core
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45 lines
793 B
45 lines
793 B
1 year ago
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package reflection
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import (
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"bytes"
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"fmt"
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"reflect"
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)
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// An InvalidUnmarshalError describes an invalid argument passed to New.
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// (It must be a non-nil pointer.)
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type InvalidUnmarshalError struct {
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Method string
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Prefix string
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reflect.Type
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}
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func (e *InvalidUnmarshalError) Error() string {
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var buf bytes.Buffer
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if e.Prefix != "" {
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_, _ = fmt.Fprintf(&buf, "%s: ", e.Prefix)
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}
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method := e.Method
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if method == "" {
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method = "New"
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}
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_, _ = fmt.Fprintf(&buf, "%s(", method)
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switch {
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case e.Type == nil:
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_, _ = buf.WriteString("nil")
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case e.Type.Kind() != reflect.Pointer:
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_, _ = fmt.Fprintf(&buf, "%s %s", "non-pointer", e.Type.String())
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default:
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_, _ = fmt.Fprintf(&buf, "%s %s", "nil", e.Type.String())
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}
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_, _ = buf.WriteString(")")
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return buf.String()
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}
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