private static void EmitDefaultValueConstant(ILGenerator code, FieldMapDefinition field)
{
if (field.DefaultValue == null)
{
return;
}
var defaultValueType = field.DefaultValue.GetType();
if (defaultValueType == typeof(bool))
{
if ((bool)field.DefaultValue)
{
code.Emit(OpCodes.Ldc_I4_1);
}
else
{
code.Emit(OpCodes.Ldc_I4_0);
}
}
else if (defaultValueType == typeof(byte))
{
code.Emit(OpCodes.Ldc_I4, (int)(byte)field.DefaultValue);
}
else if (defaultValueType == typeof(short))
{
code.Emit(OpCodes.Ldc_I4, (int)(short)field.DefaultValue);
}
else if (defaultValueType == typeof(int))
{
code.Emit(OpCodes.Ldc_I4, (int)field.DefaultValue);
}
else if (defaultValueType == typeof(long))
{
code.Emit(OpCodes.Ldc_I8, (long)field.DefaultValue);
}
else if (defaultValueType == typeof(char))
{
code.Emit(OpCodes.Ldc_I4_S, (char)field.DefaultValue);
}
else if (defaultValueType == typeof(string))
{
code.Emit(OpCodes.Ldstr, (string)field.DefaultValue);
}
else if (defaultValueType == typeof(float))
{
code.Emit(OpCodes.Ldc_R4, (float)field.DefaultValue);
}
else if (defaultValueType == typeof(double))
{
code.Emit(OpCodes.Ldc_R8, (double)field.DefaultValue);
}
}
public void AddDebugGetValue(
ILGenerator code,
FieldMapDefinition field,
MethodInfo getMethod,
FieldInfo ordinalField)
{
var defaultValue = GetDefaultValue(field);
this.AddDebugSymbolLine(
code,
$" model.{field.DestinationProperty.Name} = reader.{getMethod.Name}({ordinalField.Name}{defaultValue});");
}
private static void WrapWithNullableIfNeeded(ILGenerator code, FieldMapDefinition field)
{
var propertyType = field.DestinationProperty.PropertyType;
if (field.DefaultValue == null || propertyType.IsNullableType() == false)
{
return;
}
var constructor = MapEmitAssembly.SupportedConstantType[propertyType.GetGenericArguments()[0]];
code.Emit(OpCodes.Newobj, constructor);
}
private void EmitParameter(
FieldMapDefinition fieldDefinition,
ILGenerator code,
LocalBuilder parametersLocal)
{
var sourceColumn = fieldDefinition.SourceColumn;
sourceColumn = sourceColumn.StartsWith("@") ? sourceColumn : $"@{sourceColumn}";
if (parametersLocal == null)
{
this.EmitAddParameter(code, fieldDefinition, sourceColumn);
}
else
{
this.EmitSetParameter(code, fieldDefinition, parametersLocal, sourceColumn);
}
}
private void EmitAddParameter(ILGenerator code, FieldMapDefinition field, string sourceColumn)
{
var destinationProperty = field.DestinationProperty;
var propertyType = destinationProperty.PropertyType;
var commandMethods = MapEmitAssembly.CommandExtensionMethods;
var addParameterMethod = field.AllowNulls ? commandMethods.AddParameterOrDbNull : commandMethods.AddParameter;
this.mapEmitDebugInfo?.AddDebugAddParameter(code, field, addParameterMethod, sourceColumn);
code.Emit(OpCodes.Ldarg_1);
code.Emit(OpCodes.Ldstr, sourceColumn);
code.Emit(OpCodes.Ldarg_2);
code.Emit(OpCodes.Callvirt, destinationProperty.GetMethod);
if (propertyType.IsValueType())
{
code.Emit(OpCodes.Box, propertyType);
}
code.Emit(OpCodes.Call, addParameterMethod);
}
private void EmitGetValue(ILGenerator code, FieldMapDefinition field)
{
var ordinalField = this.fieldOrdinals[field.SourceColumn];
var getMethod = GetReaderGetDataMethodForField(field);
this.mapEmitDebugInfo?.AddDebugGetValue(code, field, getMethod, ordinalField);
code.Emit(OpCodes.Ldarg_1);
code.Emit(OpCodes.Ldarg_2);
code.Emit(OpCodes.Ldarg_0);
code.Emit(OpCodes.Ldfld, ordinalField);
EmitDefaultValueConstant(code, field);
////code.EmitCall(field.AllowNulls || field.IsSqlServerSpecific ? OpCodes.Call : OpCodes.Callvirt, getMethod, null);
code.EmitCall(getMethod.IsVirtual ? OpCodes.Callvirt : OpCodes.Call, getMethod, null);
WrapWithNullableIfNeeded(code, field);
code.EmitCall(OpCodes.Callvirt, field.DestinationProperty.GetSetMethod(), null);
}
private static MethodInfo GetReaderGetDataMethodForField(FieldMapDefinition field)
{
Dictionary <Type, MethodInfo> methodDictionary;
if (field.IsSqlServerSpecific)
{
methodDictionary = MapEmitAssembly.SqlSpecificGetMethods;
return(methodDictionary[field.DestinationProperty.PropertyType]);
}
if (field.AllowNulls)
{
methodDictionary = field.DefaultValue == null ? MapEmitAssembly.NullableGetMethods : MapEmitAssembly.NullableGetWithDefaultMethods;
}
else
{
methodDictionary = MapEmitAssembly.DataRecordGetMethods;
}
return(methodDictionary[field.DestinationProperty.PropertyType]);
}
private static string GetDefaultValue(FieldMapDefinition field)
{
var value = field.DefaultValue;
if (value is bool)
{
value = value.ToString().ToLower();
}
if (value is string)
{
value = $"\"{value}\"";
}
if (value is char)
{
value = $"'{value}'";
}
var defaultValue = value == null ? string.Empty : $", {value}";
return(defaultValue);
}
public void AddDebugAddParameter(ILGenerator code, FieldMapDefinition field, MethodInfo addParameterMethod, string sourceColumn)
{
this.AddDebugSymbolLine(
code,
$" command.{addParameterMethod.Name}(\"{sourceColumn}\", model.{field.DestinationProperty.Name});");
}