public override object Parse(ParserContext context)
{
if (string.IsNullOrWhiteSpace(context.Text))
{
return(null);
}
//处理特殊路径表达式，即获取插件文件路径或目录
if (context.Text == "~")
{
return(context.Plugin.FilePath);
}
else if (context.Text == "~/")
{
return(System.IO.Path.GetDirectoryName(context.Plugin.FilePath));
}
var text = PluginPath.PreparePathText(context.Text, out var mode);
if (string.IsNullOrWhiteSpace(text))
{
throw new PluginException($"Missing argument of the path parser.");
}
return(context.Node.Resolve(text, mode, context.MemberType));
}
public override Type GetValueType(ParserContext context)
{
if (string.IsNullOrWhiteSpace(context.Text))
{
return(null);
}
//处理特殊路径表达式，即获取插件文件路径或目录
if (context.Text.StartsWith("~"))
{
return(typeof(string));
}
var expression = Collections.HierarchicalExpression.Parse(PluginPath.PreparePathText(context.Text));
var node = context.Node.Find(expression.Path);
if (node != null && node.ValueType != null)
{
return(PluginUtility.GetMemberType(expression.Accessor, node.ValueType));
}
return(null);
}
public override Type GetValueType(ParserContext context)
{
if (string.IsNullOrWhiteSpace(context.Text))
{
return(null);
}
//处理特殊路径表达式，即获取插件文件路径或目录
if (context.Text.StartsWith("~"))
{
return(typeof(string));
}
var expression = PluginPath.Parse(PluginPath.PreparePathText(context.Text));
var node = context.Node.Find(expression.Path);
if (node != null && node.ValueType != null)
{
return(Reflection.MemberAccess.GetMemberType(node.ValueType, expression.Members));
}
return(null);
}
