protected void ProcessTemplate(string name, Tag tag)
{
if (customTags != null && customTags.ContainsKey(name))
{
ExecuteCustomTag(tag);
return;
}
UserTemplate useTemplate = currentTemplate.FindTemplate(name);
if (useTemplate == null)
{
string msg = string.Format("模板 '{0}' 未找到.", name);
throw new TemplateRuntimeException(msg, tag.Line, tag.Col);
}
// process inner elements and save content
TextWriter saveWriter = writer;
writer = new StringWriter();
string content = string.Empty;
try
{
ProcessElements(tag.InnerElements);
content = writer.ToString();
}
finally
{
writer = saveWriter;
}
UserTemplate saveTemplate = currentTemplate;
variables = new VariableScope(variables);
variables["innerText"] = content;
try
{
foreach (TagAttribute attrib in tag.Attributes)
{
object val = EvalExpression(attrib.Expression);
variables[attrib.Name] = val;
}
currentTemplate = useTemplate;
ProcessElements(currentTemplate.Elements);
}
finally
{
variables = variables.Parent;
currentTemplate = saveTemplate;
}
}
/// <summary>
/// finds template matching name. If this template does not
/// contain template called name, and parent != null then
/// FindTemplate is called on the parent
/// </summary>
/// <param name="name"></param>
/// <returns></returns>
public virtual UserTemplate FindTemplate(string name)
{
if (m_templates.ContainsKey(name))
{
return(m_templates[name]);
}
else if (m_parent != null)
{
return(m_parent.FindTemplate(name));
}
else
{
return(null);
}
}
