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More useful error message when finding an unexpected struct.

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This commit is contained in:
Alec Thomas
2020-09-12 16:31:55 +10:00
parent d1821a0666
commit 067f0e835f
1 changed files with 1 additions and 1 deletions
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build.go
+1 -1
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@@ -171,7 +171,7 @@ func buildChild(k *Kong, node *Node, typ NodeType, v reflect.Value, ft reflect.S
func buildField(k *Kong, node *Node, v reflect.Value, ft reflect.StructField, fv reflect.Value, tag *Tag, name string, seenFlags map[string]bool) { func buildField(k *Kong, node *Node, v reflect.Value, ft reflect.StructField, fv reflect.Value, tag *Tag, name string, seenFlags map[string]bool) {
mapper := k.registry.ForNamedValue(tag.Type, fv) mapper := k.registry.ForNamedValue(tag.Type, fv)
if mapper == nil { if mapper == nil {
fail("unsupported field type %s.%s (of type %s)", v.Type(), ft.Name, ft.Type) fail("unsupported field type %s.%s (of type %s), perhaps missing a cmd:\"\" tag?", v.Type(), ft.Name, ft.Type)
} }
value := &Value{ value := &Value{