/// <summary>
/// 动态获取IDataRecord里面的函数
/// </summary>
/// <param name="generator"></param>
/// <param name="type"></param>
/// <param name="isNullable"></param>
/// <param name="pro"></param>
/// <param name="dbTypeName"></param>
/// <param name="fieldName"></param>
private static void GeneratorCallMethod(ILGenerator generator, Type type, bool isNullable, PropertyInfo pro, string dbTypeName, string fieldName)
{
List<string> guidThrow = new List<string>() { "int32", "datetime", "decimal", "double", "byte", "string" };//数据库为GUID有错的实体类形
List<string> intThrow = new List<string>() { "datetime", "byte" };//数据库为int有错的实体类形
List<string> stringThrow = new List<string>() { "int32", "datetime", "decimal", "double", "byte", "guid" };//数据库为vachar有错的实体类形
List<string> decimalThrow = new List<string>() { "datetime", "byte", "guid" };
List<string> doubleThrow = new List<string>() { "datetime", "byte", "guid" };
List<string> dateThrow = new List<string>() { "int32", "decimal", "double", "byte", "guid" };
List<string> shortThrow = new List<string>() { "datetime", "guid" };
MethodInfo method = null;
var typeName =SqlSugarTool.ChangeDBTypeToCSharpType(dbTypeName);
var objTypeName = type.Name.ToLower();
var isEnum = type.IsEnum;
if (isEnum)
{
typeName = "ENUMNAME";
}
else if (typeName.IsIn("byte[]", "other"))
{
generator.Emit(OpCodes.Call, getValueMethod);
generator.Emit(OpCodes.Unbox_Any, pro.PropertyType);//找不到类型才执行拆箱（类型转换）
return;
}
if (isNullable)
{
switch (typeName)
{
case "int":
CheckType(intThrow, objTypeName, typeName, fieldName);
var isNotInt = objTypeName != "int32";
if (isNotInt)
method = getOtherNull.MakeGenericMethod(type);
else
method = getConvertInt32; break;
case "bool":
if (objTypeName != "bool" && objTypeName != "boolean")
method = getOtherNull.MakeGenericMethod(type);
else
method = getConvertBoolean; break;
case "string":
CheckType(stringThrow, objTypeName, typeName, fieldName);
method = getString; break;
case "dateTime":
CheckType(dateThrow, objTypeName, typeName, fieldName);
if (objTypeName != "datetime")
method = getOtherNull.MakeGenericMethod(type);
else
method = getConvertDateTime; break;
case "decimal":
CheckType(decimalThrow, objTypeName, typeName, fieldName);
var isNotDecimal = objTypeName != "decimal";
if (isNotDecimal)
method = getOtherNull.MakeGenericMethod(type);
else
method = getConvertDecimal; break;
case "double":
CheckType(doubleThrow, objTypeName, typeName, fieldName);
var isNotDouble = objTypeName != "double";
if (isNotDouble)
method = getOtherNull.MakeGenericMethod(type);
else
method = getConvertDouble; break;
case "guid":
CheckType(guidThrow, objTypeName, typeName, fieldName);
if (objTypeName != "guid")
method = getOtherNull.MakeGenericMethod(type);
else
method = getConvertGuid; break;
case "byte":
method = getConvertByte; break;
case "ENUMNAME":
method = getConvertToEnum_Nullable.MakeGenericMethod(type); break;
case "short":
CheckType(shortThrow, objTypeName, typeName, fieldName);
var isNotShort = objTypeName != "int16" && objTypeName != "short";
if (isNotShort)
method = getOtherNull.MakeGenericMethod(type);
else
method = getConvertInt16;
break;
default:
method = getOtherNull.MakeGenericMethod(type); break;
}
generator.Emit(OpCodes.Call, method);
}
else
{
switch (typeName)
{
case "int":
CheckType(intThrow, objTypeName, typeName, fieldName);
var isNotInt = objTypeName != "int32";
if (isNotInt)
method = getOther.MakeGenericMethod(type);
else
method = getInt32; break;
case "bool":
if (objTypeName != "bool" && objTypeName != "boolean")
method = getOther.MakeGenericMethod(type);
else
method = getBoolean; break;
case "string":
CheckType(stringThrow, objTypeName, typeName, fieldName);
method = getString; break;
case "dateTime":
CheckType(dateThrow, objTypeName, typeName, fieldName);
if (objTypeName != "datetime")
method = getOther.MakeGenericMethod(type);
else
method = getDateTime; break;
case "decimal":
CheckType(decimalThrow, objTypeName, typeName, fieldName);
var isNotDecimal = objTypeName != "decimal";
if (isNotDecimal)
method = getOther.MakeGenericMethod(type);
else
method = getDecimal; break;
case "double":
CheckType(doubleThrow, objTypeName, typeName, fieldName);
var isNotDouble = objTypeName != "double";
if (isNotDouble)
method = getOther.MakeGenericMethod(type);
else
method = getDouble; break;
case "guid":
CheckType(guidThrow, objTypeName, typeName, fieldName);
if (objTypeName != "guid")
method = getOther.MakeGenericMethod(type);
else
method = getGuid; break;
case "byte":
method = getByte; break;
case "ENUMNAME":
method = getValueMethod; break;
case "short":
CheckType(shortThrow, objTypeName, typeName, fieldName);
var isNotShort = objTypeName != "int16" && objTypeName != "short";
if (isNotShort)
method = getOther.MakeGenericMethod(type);
else
method = getInt16;
break;
default: method = getOther.MakeGenericMethod(type); break; ;
}
generator.Emit(OpCodes.Call, method);
if (method == getValueMethod)
{
generator.Emit(OpCodes.Unbox_Any, pro.PropertyType);//找不到类型才执行拆箱（类型转换）
}
}
}