RelaxngPattern CreateElement(XmlSchemaElement xse)
{
if (xse.RefName != XmlQualifiedName.Empty)
{
RelaxngRef r = new RelaxngRef();
r.Name = xse.RefName.Name;
// namespace means nothing here.
return(r);
}
RelaxngElement re = new RelaxngElement();
RelaxngName name = new RelaxngName();
name.LocalName = xse.Name;
re.NameClass = name;
XmlSchemaComplexType ct = xse.SchemaType as XmlSchemaComplexType;
foreach (XmlSchemaAttribute a in ct.Attributes)
{
re.Patterns.Add(CreateAttribute(a));
}
RelaxngPattern rpart;
if (ct.Particle == null)
{
rpart = new RelaxngEmpty();
}
else
{
rpart = CreatePatternFromParticle(ct.Particle);
}
if (ct.IsMixed)
{
if (rpart.PatternType != RelaxngPatternType.Empty)
{
RelaxngMixed mixed = new RelaxngMixed();
mixed.Patterns.Add(rpart);
rpart = mixed;
}
else
{
rpart = new RelaxngText();
}
}
re.Patterns.Add(rpart);
return(re);
}
private void InferTextContent(RelaxngElement ct, bool isNew)
{
string value = source.ReadString();
RelaxngPattern p = GetElementContent(ct);
if (p == null)
{
ct.Patterns.Add(CreateSimplePattern(
InferSimpleType(value)));
return;
}
RelaxngPatternList pl = null;
switch (p.PatternType)
{
case RelaxngPatternType.Text:
case RelaxngPatternType.Data:
return; // no way to narrow it to data.
case RelaxngPatternType.Empty:
ct.Patterns.Remove(p);
ct.Patterns.Add(new RelaxngText());
return;
case RelaxngPatternType.Group:
pl = ((RelaxngBinaryContentPattern)p).Patterns;
break;
case RelaxngPatternType.Optional:
case RelaxngPatternType.ZeroOrMore:
case RelaxngPatternType.OneOrMore:
pl = ((RelaxngSingleContentPattern)p).Patterns;
break;
default:
throw Error(p, "Unexpected pattern");
}
if (pl.Count > 0 && pl [0] is RelaxngMixed)
{
return;
}
RelaxngMixed m = new RelaxngMixed();
while (pl.Count > 0)
{
RelaxngPattern child = pl [0];
m.Patterns.Add(child);
pl.Remove(child);
}
pl.Add(m);
}
// Change pattern as to allow text content.
private void MarkAsMixed(RelaxngElement ct)
{
RelaxngPattern p = GetElementContent(ct);
// empty
if (p == null || p is RelaxngEmpty)
{
if (p != null)
{
ct.Patterns.Remove(p);
}
ct.Patterns.Add(new RelaxngText());
return;
}
// text
switch (p.PatternType)
{
case RelaxngPatternType.Text:
case RelaxngPatternType.Data:
case RelaxngPatternType.Mixed:
return;
case RelaxngPatternType.Choice:
case RelaxngPatternType.Group:
RelaxngBinaryContentPattern b =
(RelaxngBinaryContentPattern)p;
if (b != null)
{
RelaxngMixed m = b.Patterns [0]
as RelaxngMixed;
if (m == null)
{
m = new RelaxngMixed();
while (b.Patterns.Count > 0)
{
RelaxngPattern child =
b.Patterns [0];
m.Patterns.Add(child);
b.Patterns.Remove(child);
}
b.Patterns.Add(m);
}
}
break;
default:
throw Error(p, "Not allowed pattern.");
}
}
private void ProcessSequence(RelaxngElement ct, RelaxngGroup s,
ref int position, ref bool consumed,
bool isNew)
{
RelaxngMixed m = s.Patterns.Count > 0 ? s.Patterns [0] as RelaxngMixed : null;
RelaxngPatternList pl = m != null ?
m.Patterns : s.Patterns;
for (int i = 0; i < position; i++)
{
RelaxngPattern p = pl [i];
RelaxngRef iel = p as RelaxngRef;
if (iel == null)
{
RelaxngOneOrMore oom =
p as RelaxngOneOrMore;
iel = (RelaxngRef)oom.Patterns [0];
}
if (ElementMatches(iel))
{
// Sequence element type violation
// might happen (might not, but we
// cannot backtrack here). So switch
// to sequence of choice* here.
ProcessLax(ToSequenceOfChoice(ct, s));
return;
}
}
if (pl.Count <= position)
{
QName name = new QName(source.LocalName,
source.NamespaceURI);
RelaxngDefine nel = GetGlobalElement(name);
if (nel != null)
{
InferElement(nel, false);
}
else
{
nel = CreateGlobalElement(name); // used to be CreateElement().
InferElement(nel, true);
}
RelaxngRef re = new RelaxngRef();
re.Name = nel.Name;
pl.Add(re);
consumed = true;
return;
}
RelaxngPattern c = pl [position];
RelaxngRef el = c as RelaxngRef;
if (el == null)
{
RelaxngOneOrMore oom = c as RelaxngOneOrMore;
el = (RelaxngRef)oom.Patterns [0];
}
if (el == null)
{
throw Error(s, String.Format("Target complex type content sequence has an unacceptable type of particle {0}", s.Patterns [position]));
}
bool matches = ElementMatches(el);
if (matches)
{
if (consumed && c is RelaxngRef)
{
RelaxngOneOrMore oom = new RelaxngOneOrMore();
oom.Patterns.Add(el);
pl [position] = oom;
}
InferElement(el, false);
source.MoveToContent();
switch (source.NodeType)
{
case XmlNodeType.None:
if (source.NodeType ==
XmlNodeType.Element)
{
goto case XmlNodeType.Element;
}
else if (source.NodeType ==
XmlNodeType.EndElement)
{
goto case XmlNodeType.EndElement;
}
break;
case XmlNodeType.Element:
ProcessSequence(ct, s, ref position,
ref consumed, isNew);
break;
case XmlNodeType.Text:
case XmlNodeType.CDATA:
case XmlNodeType.SignificantWhitespace:
MarkAsMixed(ct);
source.ReadString();
goto case XmlNodeType.None;
case XmlNodeType.Whitespace:
source.ReadString();
goto case XmlNodeType.None;
case XmlNodeType.EndElement:
return;
default:
source.Read();
break;
}
}
else
{
if (consumed)
{
position++;
consumed = false;
ProcessSequence(ct, s,
ref position, ref consumed,
isNew);
}
else
{
ProcessLax(ToSequenceOfChoice(ct, s));
}
}
}
public void WriteMixed(RelaxngMixed p)
{
w.Write("mixed {");
WritePatterns(p.Patterns, false);
w.Write("}");
}
