/// <summary>
/// 克隆当前元素到新的宿主模板
/// </summary>
/// <param name="ownerTemplate"></param>
/// <returns></returns>
internal override DMEWeb_Element Clone(DMEWeb_Template ownerTemplate)
{
DMEWeb_ImportTag tag = new DMEWeb_ImportTag(ownerTemplate);
this.CopyTo(tag);
tag.Variable = this.Variable == null ? null : this.Variable.Clone(ownerTemplate);
return tag;
}
/// <summary>
/// 从表达式文本中构造表达式.如果表达式是以$字符开头.并且不是以$$字符开头.则认为是变量表达式.否则则认为是常量表达式
/// </summary>
/// <param name="ownerTemplate"></param>
/// <param name="expressionText"></param>
/// <returns></returns>
internal static DMEWeb_IExpression CreateExpression(DMEWeb_Template ownerTemplate, string expressionText)
{
if (string.IsNullOrEmpty(expressionText)) return new DMEWeb_ConstantExpression(expressionText);
if (expressionText.StartsWith("$"))
{
expressionText = expressionText.Remove(0, 1);
if (expressionText.StartsWith("$"))
{
//$$字符开头.则认为是常量表达式
return new DMEWeb_ConstantExpression(expressionText);
}
else
{
//变量表达式
return CreateVariableExpression(ownerTemplate, expressionText, false);
}
}
else
{
//常量表达式
return DMEWeb_Utility.IsInteger(expressionText) ?
new DMEWeb_ConstantExpression(DMEWeb_Utility.ConverToInt32(expressionText))
: new DMEWeb_ConstantExpression(expressionText);
}
}
/// <summary>
/// 标签元素
/// </summary>
/// <param name="ownerTemplate">宿主模板</param>
protected DMEWeb_Tag(DMEWeb_Template ownerTemplate)
: base(ownerTemplate)
{
this.InnerElements = new DMEWeb_ElementCollection<DMEWeb_Element>();
this.Attributes = new DMEWeb_AttributeCollection(this);
//注册添加属性时触发事件.用于设置自身的某些属性值
this.Attributes.Adding += OnAddingAttribute;
}
/// <summary>
/// 带变量字段的初始化
/// </summary>
/// <param name="ownerTemplate"></param>
/// <param name="varExp"></param>
internal DMEWeb_VariableTag(DMEWeb_Template ownerTemplate, DMEWeb_VariableExpression varExp)
: base(ownerTemplate)
{
//注册添加属性时触发事件.用于设置自身的某些属性值
this.Attributes = new DMEWeb_AttributeCollection(this);
this.Attributes.Adding += OnAddingAttribute;
this.VarExpression = varExp;
this.CallFunctions = new List<DMEWeb_IExpression>();
}
/// <summary>
///
/// </summary>
/// <param name="ownerTemplate"></param>
internal DMEWeb_Template(DMEWeb_Template ownerTemplate)
: base(ownerTemplate)
{
this.Visible = true;
this.Charset = (ownerTemplate == null ? Encoding.Default : ownerTemplate.Charset);
this.Variables = new VariableCollection();
this.ChildTemplates = new DMEWeb_ElementCollection<DMEWeb_Template>();
this.fileDependencies = new List<string>();
this.UserDefinedFunctions = new DMEWeb_UserDefinedFunctionCollection();
this.TagContainer = this;
}
/// <summary>
/// 构建标签元素
/// </summary>
/// <param name="ownerTemplate">宿主模板</param>
/// <param name="match"></param>
/// <param name="isClosedTag">是否是自闭合标签</param>
/// <returns></returns>
internal static DMEWeb_Tag CreateTag(DMEWeb_Template ownerTemplate, Match match, out bool isClosedTag)
{
string tagName = match.Groups["tagname"].Value;
isClosedTag = match.Groups["closed"].Success;
DMEWeb_Tag tag = DMEWeb_TagFactory.FromTagName(ownerTemplate, tagName);
if (tag == null) throw new DMEWeb_ParserException(string.Format("不能识别的元素标签\"{0}\"", tagName));
ParseElementAttributes(tag, match);
return tag;
}
/// <summary>
/// 根据标签名建立标签实例
/// </summary>
/// <param name="ownerTemplate"></param>
/// <param name="tagName"></param>
/// <returns></returns>
internal static DMEWeb_Tag FromTagName(DMEWeb_Template ownerTemplate, string tagName)
{
if (!string.IsNullOrEmpty(tagName))
{
switch (tagName.ToLower())
{
case "for":
return new DMEWeb_ForTag(ownerTemplate);
case "foreach":
return new DMEWeb_ForEachTag(ownerTemplate);
case "foreachelse":
return new DMEWeb_ForEachElseTag(ownerTemplate);
case "if":
return new DMEWeb_IfTag(ownerTemplate);
case "elseif":
return new DMEWeb_IfConditionTag(ownerTemplate);
case "else":
return new DMEWeb_ElseTag(ownerTemplate);
case "template":
return new DMEWeb_Template(ownerTemplate);
case "include":
return new DMEWeb_IncludeTag(ownerTemplate);
case "expression":
return new DMEWeb_ExpressionTag(ownerTemplate);
case "function":
return new FunctionTag(ownerTemplate);
case "property":
return new DMEWeb_PropertyTag(ownerTemplate);
case "serverdata":
return new DMEWeb_ServerDataTag(ownerTemplate);
case "set":
return new DMEWeb_SetTag(ownerTemplate);
case "import":
return new DMEWeb_ImportTag(ownerTemplate);
case "output":
return new DMEWeb_OutputTag(ownerTemplate);
case "datareader":
if (ownerTemplate.OwnerDocument.DocumentConfig != null
&& ownerTemplate.OwnerDocument.DocumentConfig.TagOpenMode == DMEWeb_TagOpenMode.Full)
{
return new DMEWeb_DataReaderTag(ownerTemplate);
}
else
{
return null;
}
}
}
return null;
}
/// <summary>
/// 根据前缀获取变量的模板所有者
/// </summary>
/// <param name="template"></param>
/// <param name="prefix"></param>
/// <returns>如果prefix值为null则返回template的根模板.如果为空值.则为template.如果为#则返回template的父模板.否则返回对应Id的模板</returns>
internal static DMEWeb_Template GetOwnerTemplateByPrefix(DMEWeb_Template template, string prefix)
{
if (prefix == string.Empty) return template; //前缀为空.则返回当前模板
if (prefix == "#") return template.OwnerTemplate ?? template; //前缀为#.则返回父模板(如果父模板不存在则返回当前模板)
//取得根模板
while (template.OwnerTemplate != null) template = template.OwnerTemplate;
//如果没有前缀.则返回根模板.否则返回对应Id的模板
return prefix == null ? template : template.GetChildTemplateById(prefix);
}
/// <summary>
/// 克隆当前元素到新的宿主模板
/// </summary>
/// <param name="ownerTemplate"></param>
/// <returns></returns>
internal override DMEWeb_Element Clone(DMEWeb_Template ownerTemplate)
{
DMEWeb_VariableTag tag = new DMEWeb_VariableTag(ownerTemplate, (DMEWeb_VariableExpression)this.VarExpression.Clone(ownerTemplate));
foreach (var att in this.Attributes)
{
tag.Attributes.Add(att.Clone(ownerTemplate));
}
foreach (DMEWeb_IExpression exp in this.CallFunctions)
{
tag.CallFunctions.Add(exp.Clone(ownerTemplate));
}
return tag;
}
/// <summary>
/// 克隆表达式
/// </summary>
/// <param name="ownerTemplate"></param>
/// <returns></returns>
public DMEWeb_IExpression Clone(DMEWeb_Template ownerTemplate)
{
DMEWeb_VariableIdentity variableId = this.VariableId.Clone(ownerTemplate);
DMEWeb_VariableExpression exp = new DMEWeb_VariableExpression(variableId, this.FieldName, this.IsMethod, this.NeedCacheData);
if (this.NextExpression != null)
{
exp.NextExpression = (DMEWeb_VariableExpression)(this.NextExpression.Clone(ownerTemplate));
exp.NextExpression.ParentExpression = exp;
}
return exp;
}
/// <summary>
///
/// </summary>
/// <param name="ownerTemplate"></param>
internal DMEWeb_PropertyTag(DMEWeb_Template ownerTemplate)
: base(ownerTemplate)
{
}
/// <summary>
/// 开始解析标签数据
/// </summary>
/// <param name="ownerTemplate">宿主模板</param>
/// <param name="container">标签的容器</param>
/// <param name="tagStack">标签堆栈</param>
/// <param name="text"></param>
/// <param name="match"></param>
/// <param name="isClosedTag">是否闭合标签</param>
/// <returns>如果需要继续处理EndTag则返回true.否则请返回false</returns>
internal override bool ProcessBeginTag(DMEWeb_Template ownerTemplate, DMEWeb_Tag container, Stack<DMEWeb_Tag> tagStack, string text, ref Match match, bool isClosedTag)
{
if (this.From == null) throw new DMEWeb_ParserException(string.Format("{0}标签中缺少from属性", this.TagName));
return base.ProcessBeginTag(ownerTemplate, container, tagStack, text, ref match, isClosedTag);
}
/// <summary>
/// 开始解析标签数据
/// </summary>
/// <param name="ownerTemplate">宿主模板</param>
/// <param name="container">标签的容器</param>
/// <param name="tagStack">标签堆栈</param>
/// <param name="text"></param>
/// <param name="match"></param>
/// <param name="isClosedTag">是否闭合标签</param>
/// <returns>如果需要继续处理EndTag则返回true.否则请返回false</returns>
internal override bool ProcessBeginTag(DMEWeb_Template ownerTemplate, DMEWeb_Tag container, Stack<DMEWeb_Tag> tagStack, string text, ref Match match, bool isClosedTag)
{
if (this.Variable == null && !this.Output) throw new DMEWeb_ParserException(string.Format("{0}标签中如果未定义Output属性为true则必须定义var属性", this.TagName));
if (this.Type == null) throw new DMEWeb_ParserException(string.Format("{0}标签中缺少type属性或type属性值未知", this.TagName));
//if (this.Type != ServerDataType.Random
// && this.Type != ServerDataType.Time
// && this.Type != ServerDataType.Request
// && this.Type != ServerDataType.Environment
// && this.Item == null) throw new ParserException(string.Format("当{0}标签type=\"{1}\"时必须设置item属性值", this.TagName, this.Type));
return base.ProcessBeginTag(ownerTemplate, container, tagStack, text, ref match, isClosedTag);
}
/// <summary>
///
/// </summary>
/// <param name="ownerTemplate"></param>
internal DMEWeb_ImportTag(DMEWeb_Template ownerTemplate)
: base(ownerTemplate)
{
}
/// <summary>
/// 开始解析标签数据
/// </summary>
/// <param name="ownerTemplate">宿主模板</param>
/// <param name="container">标签的容器</param>
/// <param name="tagStack">标签堆栈</param>
/// <param name="text"></param>
/// <param name="match"></param>
/// <param name="isClosedTag">是否闭合标签</param>
/// <returns>如果需要继续处理EndTag则返回true.否则请返回false</returns>
internal virtual bool ProcessBeginTag(DMEWeb_Template ownerTemplate, DMEWeb_Tag container, Stack<DMEWeb_Tag> tagStack, string text, ref Match match, bool isClosedTag)
{
container.AppendChild(this);
return !isClosedTag;
}
/// <summary>
///
/// </summary>
/// <param name="ownerTemplate"></param>
internal DMEWeb_DataReaderTag(DMEWeb_Template ownerTemplate)
: base(ownerTemplate)
{
this.Parameters = new DMEWeb_ElementCollection<DMEWeb_IExpression>();
}
/// <summary>
/// 开始解析标签数据
/// </summary>
/// <param name="ownerTemplate">宿主模板</param>
/// <param name="container">标签的容器</param>
/// <param name="tagStack">标签堆栈</param>
/// <param name="text"></param>
/// <param name="match"></param>
/// <param name="isClosedTag">是否闭合标签</param>
/// <returns>如果需要继续处理EndTag则返回true.否则请返回false</returns>
internal override bool ProcessBeginTag(DMEWeb_Template ownerTemplate, DMEWeb_Tag container, Stack<DMEWeb_Tag> tagStack, string text, ref Match match, bool isClosedTag)
{
if (this.Variable == null) throw new DMEWeb_ParserException(string.Format("{0}标签中缺少var属性", this.TagName));
if (this.Connection == null) throw new DMEWeb_ParserException(string.Format("{0}标签中缺少connection属性", this.TagName));
if (this.CommandText == null) throw new DMEWeb_ParserException(string.Format("{0}标签中缺少commandtext属性", this.TagName));
return base.ProcessBeginTag(ownerTemplate, container, tagStack, text, ref match, isClosedTag);
}
/// <summary>
/// 克隆当前元素到新的宿主模板
/// </summary>
/// <param name="ownerTemplate"></param>
/// <returns></returns>
internal override DMEWeb_Element Clone(DMEWeb_Template ownerTemplate)
{
DMEWeb_DataReaderTag tag = new DMEWeb_DataReaderTag(ownerTemplate);
this.CopyTo(tag);
tag.Variable = this.Variable == null ? null : this.Variable.Clone(ownerTemplate);
foreach (DMEWeb_IExpression exp in this.Parameters)
{
tag.Parameters.Add(exp.Clone(ownerTemplate));
}
return tag;
}
/// <summary>
///
/// </summary>
/// <param name="ownerTemplate"></param>
internal DMEWeb_IfConditionTag(DMEWeb_Template ownerTemplate)
: base(ownerTemplate)
{
this.Values = new DMEWeb_ElementCollection<DMEWeb_IExpression>();
}
/// <summary>
/// 开始解析标签数据
/// </summary>
/// <param name="ownerTemplate">宿主模板</param>
/// <param name="container">标签的容器</param>
/// <param name="tagStack">标签堆栈</param>
/// <param name="text"></param>
/// <param name="match"></param>
/// <param name="isClosedTag">是否闭合标签</param>
/// <returns>如果需要继续处理EndTag则返回true.否则请返回false</returns>
internal override bool ProcessBeginTag(DMEWeb_Template ownerTemplate, DMEWeb_Tag container, Stack<DMEWeb_Tag> tagStack, string text, ref Match match, bool isClosedTag)
{
if (this.Values.Count == 0) throw new DMEWeb_ParserException(string.Format("{0}标签中缺少value属性", this.TagName));
//判断标签的容器是否为IfTag标签
if (!(container is DMEWeb_IfTag)) throw new DMEWeb_ParserException(string.Format("未找到和{0}标签对应的{1}标签", this.TagName, this.EndTagName));
DMEWeb_IfTag ifTag = (DMEWeb_IfTag)container;
//判断此条件是否带var属性.如果不带则设置为if的条件
if (this.VarExpression == null) this.VarExpression = ifTag.VarExpression;
//加入到If标签的ElseIf队列
ifTag.AddElseCondition(this);
return true;
}
/// <summary>
/// 结束标签的解析
/// </summary>
/// <param name="ownerTemplate">模板宿主</param>
/// <param name="container">元素容器</param>
/// <param name="tagStack">标签堆栈</param>
/// <param name="text"></param>
/// <param name="match"></param>
internal virtual void ProcessEndTag(DMEWeb_Template ownerTemplate, DMEWeb_Tag container, Stack<DMEWeb_Tag> tagStack, string text, ref Match match)
{
int charOffset = 0, offset = 0;
bool isClosedTag;
charOffset = offset = match.Index + match.Length;
match = null;
while (offset < text.Length)
{
if (DMEWeb_ParserHelper.IsVariableTagStart(text, offset) && (match = DMEWeb_ParserRegex.VarTagRegex.Match(text, offset)).Success) //匹配到模板变量
{
//构建文本节点
DMEWeb_ParserHelper.CreateTextNode(ownerTemplate, container, text, charOffset, match.Index - charOffset);
//构建模板变量
DMEWeb_ParserHelper.CreateVariableTag(ownerTemplate, container, match);
}
else if (DMEWeb_ParserHelper.IsTagStart(text, offset) && (match = DMEWeb_ParserRegex.TagRegex.Match(text, offset)).Success) //匹配到某种类型的标签
{
//构建文本节点
DMEWeb_ParserHelper.CreateTextNode(ownerTemplate, container, text, charOffset, match.Index - charOffset);
//构建标签
DMEWeb_Tag tag = DMEWeb_ParserHelper.CreateTag(ownerTemplate, match, out isClosedTag);
if (container.IsSingleTag && tag.IsSingleTag)
{
//如果前容器是单一标签并且当前标签也是单一标签.则回退到上一级非单元素标签
while (tagStack.Count > 0)
{
container = tagStack.Peek();
if (container.IsSingleTag)
{
tagStack.Pop();
}
else
{
break;
}
}
}
//将当前标签加入堆栈
tagStack.Push(tag);
//将解析权交给标签
bool flag = tag.ProcessBeginTag(ownerTemplate, container, tagStack, text, ref match, isClosedTag);
//非已闭合标签或者是单标签则处理标签的结束标签
if (flag)
{
tag.ProcessEndTag(ownerTemplate, tag, tagStack, text, ref match);
}
if (tagStack.Count > 0 && tagStack.Peek() == tag && isClosedTag)
{
//闭合标签则回滚一级
tagStack.Pop();
}
if (tag.IsSingleTag)
{
//如果标签是单标签则退出寻找
break;
}
else
{
//取得容器
if (tagStack.Count > 0) container = tagStack.Peek();
}
}
else if (DMEWeb_ParserHelper.IsCloseTagStart(text, offset) && (match = DMEWeb_ParserRegex.EndTagRegex.Match(text, offset)).Success) //匹配到某个结束标签
{
//构建文本节点
DMEWeb_ParserHelper.CreateTextNode(ownerTemplate, container, text, charOffset, match.Index - charOffset);
//取得标签名称
string name = match.Groups["tagname"].Value;
//回滚标签堆栈.直到回滚到同名称元素的上级为此
while (tagStack.Count > 0)
{
DMEWeb_Tag popTag = tagStack.Pop();
if (name.Equals(popTag.TagName, StringComparison.InvariantCultureIgnoreCase)) break;
if (!name.Equals(popTag.EndTagName, StringComparison.InvariantCultureIgnoreCase))
{
//非匹配的结束标签.则模板有错
throw new DMEWeb_ParserException(string.Format("无效的结束标签,原期望的是{0}结束标签", popTag.EndTagName));
}
}
break;
}
else if (DMEWeb_ParserHelper.IsVTExpressionStart(text, offset))
{
char s = DMEWeb_ParserHelper.ReadChar(text, offset + DMEWeb_ParserHelper.VTExpressionHead.Length);
int startOffset = offset + DMEWeb_ParserHelper.VTExpressionHead.Length + 1;
int lastOffset = text.IndexOf(s, offset + DMEWeb_ParserHelper.VTExpressionHead.Length + 1);
if (lastOffset == -1) throw new DMEWeb_ParserException(string.Format("无法找到VT表达式[{0}{1}]的结束标记[{1}]", DMEWeb_ParserHelper.VTExpressionHead, s));
string code = text.Substring(startOffset, lastOffset - startOffset);
if (code.Length > 0)
{
//构建文本节点
DMEWeb_ParserHelper.CreateTextNode(ownerTemplate, container, text, charOffset, offset - charOffset);
//解析表达式里的代码
new DMEWeb_TemplateDocument(ownerTemplate, container, code, ownerTemplate.OwnerDocument.DocumentConfig);
}
offset = lastOffset + 1;
charOffset = offset;
continue;
}
else if (DMEWeb_ParserHelper.IsCommentTagStart(text, offset))
{
//构建文本节点
DMEWeb_ParserHelper.CreateTextNode(ownerTemplate, container, text, charOffset, offset - charOffset);
//找到注释的起始标记"<!--vt[",则直接查找结束标记"]-->"
offset = text.IndexOf(DMEWeb_ParserHelper.CommentTagEnd, offset + DMEWeb_ParserHelper.CommentTagStart.Length);
if (offset == -1) throw new DMEWeb_ParserException("无法找到注释的结束标记");
offset += DMEWeb_ParserHelper.CommentTagEnd.Length;
charOffset = offset;
continue;
}
//处理偏移位置
if (match != null && match.Success)
{
charOffset = offset = match.Index + match.Length;
match = null;
}
else
{
offset++;
}
}
if (match == null) throw new DMEWeb_ParserException(string.Format("{0}标签未闭合", container.TagName));
}
/// <summary>
/// 预解析模板数据
/// </summary>
/// <param name="renderInstance">模板解析器实例的配置</param>
/// <param name="template">要解析处理的模板</param>
internal static void PreRenderTemplate(string renderInstance, DMEWeb_Template template)
{
DMEWeb_ITemplateRender render = GetRenderInstance(renderInstance) as DMEWeb_ITemplateRender;
if (render != null) render.PreRender(template);
}
/// <summary>
/// 从模板中获取某个变量.如果不存在此变量则添加新的变量
/// </summary>
/// <param name="ownerTemplate"></param>
/// <param name="varName"></param>
/// <returns></returns>
internal static DMEWeb_Variable GetVariableOrAddNew(DMEWeb_Template ownerTemplate, string varName)
{
DMEWeb_Variable var = ownerTemplate.Variables[varName];
if (var == null)
{
var = new DMEWeb_Variable(ownerTemplate, varName);
ownerTemplate.Variables.Add(var);
}
return var;
}
/// <summary>
/// 解析标签数据
/// </summary>
/// <param name="ownerTemplate">宿主模板</param>
/// <param name="container">标签的容器</param>
/// <param name="tagStack">标签堆栈</param>
/// <param name="text"></param>
/// <param name="match"></param>
/// <param name="isClosedTag">是否闭合标签</param>
/// <returns>如果需要继续处理EndTag则返回true.否则请返回false</returns>
internal override bool ProcessBeginTag(DMEWeb_Template ownerTemplate, DMEWeb_Tag container, Stack<DMEWeb_Tag> tagStack, string text, ref Match match, bool isClosedTag)
{
//判断标签的容器是否为IfTag标签
if (!(container is DMEWeb_IfTag)) throw new DMEWeb_ParserException(string.Format("未找到和{0}标签对应的{1}标签", this.TagName, this.EndTagName));
DMEWeb_IfTag ifTag = (DMEWeb_IfTag)container;
if (ifTag.Else != null) throw new DMEWeb_ParserException(string.Format("{0}标签不能定义多个{1}标签", this.EndTagName, this.TagName));
//加入到If标签的Else节点
ifTag.Else = this;
return true;
}
/// <summary>
/// 使用特性方法预解析模板数据
/// </summary>
/// <param name="renderInstance"></param>
/// <param name="renderMethod"></param>
/// <param name="template"></param>
internal static void PreRenderTemplateByAttributeMethod(string renderInstance, string renderMethod, DMEWeb_Template template)
{
object render = GetRenderInstance(renderInstance);
if (render != null)
{
//取得特性方法
MethodInfo method = null;
MethodInfo[] methods = render.GetType().GetMethods(BindingFlags.Instance | BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic);
foreach (MethodInfo m in methods)
{
DMEWeb_TemplateRenderMethodAttribute att = System.Attribute.GetCustomAttribute(m, typeof(DMEWeb_TemplateRenderMethodAttribute)) as DMEWeb_TemplateRenderMethodAttribute;
if (att != null)
{
if (renderMethod.Equals(m.Name, StringComparison.InvariantCultureIgnoreCase))
{
method = m;
break;
}
}
}
if (method != null)
{
ParameterInfo[] pars = method.GetParameters();
if (pars.Length == 1 && pars[0].ParameterType == typeof(DMEWeb_Template))
{
method.Invoke(method.IsStatic ? null : render, new object[] { template });
}
}
}
}
/// <summary>
///
/// </summary>
/// <param name="ownerTemplate"></param>
internal DMEWeb_ElseTag(DMEWeb_Template ownerTemplate)
: base(ownerTemplate)
{
}
/// <summary>
/// 克隆当前元素到新的宿主模板
/// </summary>
/// <param name="ownerTemplate"></param>
/// <returns></returns>
internal override DMEWeb_Element Clone(DMEWeb_Template ownerTemplate)
{
DMEWeb_ForEachTag tag = new DMEWeb_ForEachTag(ownerTemplate);
this.CopyTo(tag);
tag.Else = this.Else == null ? null : (DMEWeb_ForEachElseTag)(this.Else.Clone(ownerTemplate));
tag.From = this.From == null ? null : (DMEWeb_VariableExpression)this.From.Clone(ownerTemplate);
tag.Index = this.Index == null ? null : this.Index.Clone(ownerTemplate);
tag.Item = this.Item == null ? null : this.Item.Clone(ownerTemplate);
return tag;
}
/// <summary>
/// 克隆当前元素到新的宿主模板
/// </summary>
/// <param name="ownerTemplate"></param>
/// <returns></returns>
internal override DMEWeb_Element Clone(DMEWeb_Template ownerTemplate)
{
DMEWeb_ElseTag tag = new DMEWeb_ElseTag(ownerTemplate);
this.CopyTo((DMEWeb_IfConditionTag)tag);
return tag;
}
/// <summary>
///
/// </summary>
/// <param name="ownerTemplate"></param>
internal DMEWeb_ForEachTag(DMEWeb_Template ownerTemplate)
: base(ownerTemplate)
{
}
/// <summary>
/// 开始解析标签数据
/// </summary>
/// <param name="ownerTemplate">宿主模板</param>
/// <param name="container">标签的容器</param>
/// <param name="tagStack">标签堆栈</param>
/// <param name="text"></param>
/// <param name="match"></param>
/// <param name="isClosedTag">是否闭合标签</param>
/// <returns>如果需要继续处理EndTag则返回true.否则请返回false</returns>
internal override bool ProcessBeginTag(DMEWeb_Template ownerTemplate, DMEWeb_Tag container, Stack<DMEWeb_Tag> tagStack, string text, ref Match match, bool isClosedTag)
{
if (this.Variable == null && !this.Output) throw new DMEWeb_ParserException(string.Format("{0}标签中如果未定义Output属性为true则必须定义var属性", this.TagName));
if (this.Field == null || string.IsNullOrEmpty(this.Field.Text)) throw new DMEWeb_ParserException(string.Format("{0}标签中缺少field属性", this.TagName));
if (this.Type == null) throw new DMEWeb_ParserException(string.Format("{0}标签中缺少type属性", this.TagName));
return base.ProcessBeginTag(ownerTemplate, container, tagStack, text, ref match, isClosedTag);
}
