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// Copyright 2021 The xgen Authors. All rights reserved. Use of this source
// code is governed by a BSD-style license that can be found in the LICENSE
// file.
//
// Package xgen written in pure Go providing a set of functions that allow you
// to parse XSD (XML schema files). This library needs Go version 1.10 or
// later.
package xgen
import (
"encoding/xml"
"strconv"
)
// OnChoice handles parsing event on the choice start elements. The
// choice element defines that one and only one of the contained element can be present within
// the contained element.
func (opt *Options) OnChoice(ele xml.StartElement, protoTree []interface{}) (err error) {
choice := Choice{}
for _, attr := range ele.Attr {
if attr.Name.Local == "maxOccurs" {
var maxOccurs int
if maxOccurs, err = strconv.Atoi(attr.Value); attr.Value != "unbounded" && err != nil {
return
}
if attr.Value == "unbounded" || maxOccurs > 1 {
choice.Plural, err = true, nil
} else {
choice.Plural, err = false, nil
}
}
}
// Handle a case of a parent choice having plurality that children should inherit
if opt.Choice.Len() > 0 {
choice.Plural = choice.Plural || opt.Choice.Peek().(*Choice).Plural
}
opt.Choice.Push(&choice)
return
}
// EndChoice handles parsing event on the choice end elements.
func (opt *Options) EndChoice(ele xml.EndElement, protoTree []interface{}) (err error) {
opt.Choice.Pop()
return
}
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