load xml

var text =
@[xml]<?xml version="1.0" encoding="utf-8"?>
	<root>
		<?pi data?>
		chardata
		<group atr="abc">
			<el a="yes" b="2">value</el>
		</group>
	</root>
@[xml]

# Parse XML into a tree structure
var doc = xml.parse(text)
io.writeln('version =', doc.version, ' encoding =', doc.encoding)

# Obtaining the root element
var root = doc.root
io.writeln('<', root.tag, root.empty? '/>' : '>')

# processing instruction
var pi = (xml::Instruction)root.child(0)
io.writeln('<?', pi.target, pi.data, '?>' )

# character data
var cd = (xml::CharData)root.child(1)
io.writeln('chardata:', cd.kind, cd.data)

# getting a sub-element
var gr = root.elements[0]
io.writeln('<', gr.tag, 'atr="', gr['atr'], '">')

# finding a sub-element by path and/or attributes
var inner = root.find('group/el', b = '2')
io.writeln('inner text:', inner.text)

# mapping of data
# io.writeln('inner attribs:', inner.map($attribs, type(tuple<a: enum<yes,no>, b: int>)))
# TODO;

# adding a sub-element <el2> <inner1>str</inner1> <inner2>1</inner2> </el2>
gr.extend(el2 = (inner1 = 'str', inner2 = 1))

# serializing to XML
io.writeln(doc.serialize())