public AttributeValue(PositionTagged <string> prefix, PositionTagged <object> value, bool literal)
{
Prefix = prefix;
Value = value;
Literal = literal;
}
public virtual void WriteAttribute(string name, PositionTagged <string> prefix, PositionTagged <string> suffix, params AttributeValue[] values)
{
WriteAttributeTo(Output, name, prefix, suffix, values);
}
protected internal virtual void WriteAttributeTo(TextWriter writer, string name, PositionTagged <string> prefix, PositionTagged <string> suffix, params AttributeValue[] values)
{
bool first = true;
bool wroteSomething = false;
if (values.Length == 0)
{
// Explicitly empty attribute, so write the prefix and suffix
WritePositionTaggedLiteral(writer, prefix);
WritePositionTaggedLiteral(writer, suffix);
}
else
{
for (int i = 0; i < values.Length; i++)
{
AttributeValue attrVal = values[i];
PositionTagged <object> val = attrVal.Value;
PositionTagged <string> next = i == values.Length - 1 ?
suffix : // End of the list, grab the suffix
values[i + 1].Prefix; // Still in the list, grab the next prefix
bool?boolVal = null;
if (val.Value is bool)
{
boolVal = (bool)val.Value;
}
if (val.Value != null && (boolVal == null || boolVal.Value))
{
var valStr = val.Value as string;
if (valStr == null)
{
valStr = val.Value.ToString();
}
if (boolVal != null)
{
Debug.Assert(boolVal.Value);
valStr = name;
}
if (first)
{
WritePositionTaggedLiteral(writer, prefix);
first = false;
}
else
{
WritePositionTaggedLiteral(writer, attrVal.Prefix);
}
// Calculate length of the source span by the position of the next value (or suffix)
int sourceLength = next.Position - attrVal.Value.Position;
if (attrVal.Literal)
{
WriteLiteralTo(writer, valStr);
}
else
{
WriteTo(writer, valStr); // Write value
}
wroteSomething = true;
}
}
if (wroteSomething)
{
WritePositionTaggedLiteral(writer, suffix);
}
}
}
private void WritePositionTaggedLiteral(TextWriter writer, PositionTagged <string> value)
{
WritePositionTaggedLiteral(writer, value.Value, value.Position);
}