func buildFieldFold()

in gotype/fold_reflect.go [206:249]

35 lines of code
10 McCabe index (conditional complexity)


func buildFieldFold(C *foldContext, t reflect.Type, idx int) (reFoldFn, error) {
	st := t.Field(idx)

	name := st.Name
	rune, _ := utf8.DecodeRuneInString(name)
	if !unicode.IsUpper(rune) {
		// ignore non exported fields
		return nil, nil
	}

	tagName, tagOpts := parseTags(st.Tag.Get(C.opts.tag))
	if tagOpts.squash && tagOpts.omitEmpty {
		return nil, errInlineAndOmitEmpty
	}

	if tagOpts.omit {
		// ignore omitted fields
		return nil, nil
	}

	if tagOpts.squash {
		return buildFieldFoldInline(C, t, idx)
	}

	foldT := st.Type
	if tagOpts.omitEmpty {
		_, foldT = baseType(st.Type)
	}
	valueVisitor, err := getReflectFold(C, foldT)
	if err != nil {
		return nil, err
	}

	if tagName != "" {
		name = tagName
	} else {
		name = strings.ToLower(name)
	}

	if tagOpts.omitEmpty {
		return makeNonEmptyFieldFold(name, idx, st.Type, valueVisitor)
	}
	return makeFieldFold(name, idx, valueVisitor)
}