protected virtual void _Init()
{
_Functions = new Dictionary<string, TemplateFunction>(StringComparer.InvariantCultureIgnoreCase);
_Variables = new VariableScope();
this.Reset();
_Functions.Add("equals", new TemplateFunction(FuncEquals));
_Functions.Add("notequals", new TemplateFunction(FuncNotEquals));
_Functions.Add("iseven", new TemplateFunction(FuncIsEven));
_Functions.Add("isodd", new TemplateFunction(FuncIsOdd));
_Functions.Add("isempty", new TemplateFunction(FuncIsEmpty));
_Functions.Add("isnotempty", new TemplateFunction(FuncIsNotEmpty));
_Functions.Add("isnumber", new TemplateFunction(FuncIsNumber));
_Functions.Add("toupper", new TemplateFunction(FuncToUpper));
_Functions.Add("tolower", new TemplateFunction(FuncToLower));
_Functions.Add("isdefined", new TemplateFunction(FuncIsDefined));
_Functions.Add("ifdefined", new TemplateFunction(FuncIfDefined));
_Functions.Add("len", new TemplateFunction(FuncLen));
_Functions.Add("tolist", new TemplateFunction(FuncToList));
_Functions.Add("isnull", new TemplateFunction(FuncIsNull));
_Functions.Add("not", new TemplateFunction(FuncNot));
_Functions.Add("iif", new TemplateFunction(FuncIif));
_Functions.Add("format", new TemplateFunction(FuncFormat));
_Functions.Add("trim", new TemplateFunction(FuncTrim));
_Functions.Add("filter", new TemplateFunction(FuncFilter));
_Functions.Add("isgt", new TemplateFunction(FuncGt));
_Functions.Add("islt", new TemplateFunction(FuncLt));
_Functions.Add("compare", new TemplateFunction(FuncCompare));
_Functions.Add("ior", new TemplateFunction(FuncOr));
_Functions.Add("iand", new TemplateFunction(FuncAnd));
_Functions.Add("comparenocase", new TemplateFunction(FuncCompareNoCase));
_Functions.Add("stripnewlines", new TemplateFunction(FuncStripNewLines));
_Functions.Add("typeof", new TemplateFunction(FuncTypeOf));
_Functions.Add("cbool", new TemplateFunction(FuncCBool));
_Functions.Add("cint", new TemplateFunction(FuncCInt));
_Functions.Add("cdouble", new TemplateFunction(FuncCDouble));
_Functions.Add("cdate", new TemplateFunction(FuncCDate));
_Functions.Add("now", new TemplateFunction(FuncNow));
_Functions.Add("createtypereference", new TemplateFunction(FuncCreateTypeReference));
}
/// <summary>
/// 初始化变量视图，并为其指定父视图。
/// </summary>
/// <param name="parent"></param>
public VariableScope(VariableScope parent)
{
_Parent = parent;
_Values = new Dictionary<string, object>(StringComparer.InvariantCultureIgnoreCase);
}
/// <summary>
/// 处理模板。
/// </summary>
/// <param name="name">指定模板名。</param>
/// <param name="tag">指定一个标签实例。</param>
protected void ProcessTemplate(string name, Tag tag)
{
if (_CustomTags != null && _CustomTags.ContainsKey(name))
{
ExecuteCustomTag(tag);
return;
}
Template useTemplate = _CurrentTemplate.FindTemplate(name);
if (useTemplate == null)
{
string msg = string.Format("模板未找到：'{0}'", 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
{
this.ProcessElements(tag.InnerElements);
content = _Writer.ToString();
}
finally
{
_Writer = saveWriter;
}
Template saveTemplate = _CurrentTemplate;
_Variables = new VariableScope(_Variables);
_Variables["innerText"] = content;
try
{
foreach (TagAttribute attrib in tag.Attributes)
{
object val = this.EvalExpression(attrib.Expression);
_Variables[attrib.Name] = val;
}
_CurrentTemplate = useTemplate;
this.ProcessElements(_CurrentTemplate.Elements);
}
finally
{
_Variables = _Variables.Parent;
_CurrentTemplate = saveTemplate;
}
}
