/// <summary>
/// 访问 Concat 方法
/// </summary>
/// <param name="m">方法表达式</param>
protected override Expression VisitConcat(MethodCallExpression m)
{
IList <Expression> expressions = null;
if (m.Arguments.Count > 1)
{
expressions = m.Arguments;
}
else if (m.Arguments.Count == 1 && m.Arguments[0].NodeType == ExpressionType.NewArrayInit)
{
expressions = (m.Arguments[0] as NewArrayExpression).Expressions;
}
if (expressions == null)
{
_visitor.Visit(m.Arguments[0]);
}
else
{
_builder.Append("(");
for (int i = 0; i < expressions.Count; i++)
{
_visitor.VisitWithoutStack(_ => this.VisitToStringImpl(expressions[i]));
if (i < expressions.Count - 1)
{
_builder.Append(" || ");
}
}
_builder.Append(")");
}
return(m);
}