This fixes #86, Duplicated field in the generated code

[GiovanePS]

PR Details

Description

The problem happens due to the combination of two lines of code:

1. xmlElement.go:58:
   • opt.Element.Push(&e)
     This line inserts an element in Element stack, to indicate that we are inside <element></element>.
2. xmlRestriction.go:49:
   • opt.ComplexType.Peek().(*ComplexType).Elements[len(opt.ComplexType.Peek().(*ComplexType).Elements)-1] = *opt.Element.Peek().(*Element)
     This replaces the last element of ComplexType.Elements.

The problem occurs because when some element neither has a type attribute nor contains a restriction (which is valid), the elements were not popped properly (when they were pushed only because they had no name). And when a restriction is found, the second code mentioned runs, replacing the last element.

It's good to know that it only happens with an attribute because, if the restriction is an element, like this:

<element name="ElementWithRestriction">
	<simpleType>
		<restriction base="string" />
	</simpleType>
</element>

the restriction handling code runs, but the *opt.Element.Peek().(*Element) refers to itself, in other words, replacing the last element (itself) with itself.

The solution I found to solve this problem is like the solution proposed by @senekor (#5), that simply pops the element at the end:

if opt.Element.Len() > 0 && opt.ComplexType.Len() > 0 {
     opt.Element.Pop()
}

His problem is not the same as mine, but the root cause is: the opt.Element stack.
With the above solution, the code stops generating the same field twice, because there are no remnant elements.

Related Issue

#86

Types of changes

• Docs change / refactoring / dependency upgrade
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[senekor]

@GiovanePS stop tagging me, I don't use this library anymore.

You should've commented on the issue I opened, that way I could unsubscribe from my own issue if it is not relevant to me anymore. If you tag people directly, they have no practical way to escape the notification.