/// <summary>
/// Creates a nested class
/// </summary>
/// <returns>TypeSpecifier for a new nested class</returns>
internal TypeSpecifier CreateDisplayClass()
{
var identifier = _identifiers.GetDisplayClassIdentifier();
var nestedTb = TypeBuilder.DefineNestedType(identifier.TypeName, TypeAttributes.NestedPrivate | TypeAttributes.Class | TypeAttributes.Sealed | TypeAttributes.Abstract);
nestedTb.SetCustomAttribute(Specification <string> .GeneratedCode);
var ts = new TypeSpecifier(nestedTb)
{
_identifiers = identifier
};
_nestedClasses.Add(ts);
return(ts);
}
/// <summary>
/// Emits the IL for this method
/// </summary>
/// <param name="il">IL Generator</param>
/// <param name="sourceField">The field containing the source component</param>
/// <param name="typeBeingBuilt">The type being built</param>
internal override void Emit(ILGenerator il, FieldBuilder sourceField, TypeSpecifier typeBeingBuilt)
{
var nestedType = typeBeingBuilt.CreateDisplayClass();
var backingField = nestedType.TypeBuilder.DefineField(nestedType.GetInvokeName(_name),
_invoke.GetType(),
FieldAttributes.Static | FieldAttributes.Public);
typeBeingBuilt.RunAfterCreation(() =>
{
backingField.SafeSetValue(null, _invoke);
});
il.Emit(OpCodes.Ldsfld, backingField);
foreach (var p in _params)
{
p.Emit(il, sourceField, typeBeingBuilt.TypeBuilder);
}
il.Emit(OpCodes.Callvirt, _invoke.GetType().GetMethod("Invoke"));
il.Emit(OpCodes.Ret);
}
/// <summary>
/// Emits the IL for setting a backing component property
/// </summary>
/// <param name="setterIL">ILGenerator</param>
/// <param name="sourceField">The field where the source component is stored</param>
/// <param name="nestedType">Builder for a nested type, in case this property needs to
/// make one</param>
/// <param name="thisType">Builder for the current type</param>
protected override void ProtectedEmitSetter(ILGenerator setterIL, FieldBuilder sourceField, Lazy <TypeSpecifier> nestedType, TypeSpecifier thisType, string name)
{
if (_invokeSetter == null)
{
setterIL.Emit(OpCodes.Ldarg_0);
setterIL.Emit(OpCodes.Ldfld, sourceField);
setterIL.Emit(OpCodes.Ldloc_0);
setterIL.Emit(OpCodes.Callvirt, _componentProperty.GetSetMethod(true));
}
else
{
var nested = nestedType.Value;
var backingSetter = nested.TypeBuilder.DefineField(nested.GetBackingSetterIdentifier(name),
_setterType,
FieldAttributes.Public | FieldAttributes.Static);
thisType.RunAfterCreation(() =>
{
backingSetter.SafeSetValue(null, _invokeSetter);
});
setterIL.Emit(OpCodes.Ldsfld, backingSetter);
setterIL.Emit(OpCodes.Ldarg_0);
setterIL.Emit(OpCodes.Ldfld, sourceField);
setterIL.Emit(OpCodes.Ldloc_0);
setterIL.Emit(OpCodes.Callvirt, _setterType.GetMethod("Invoke"));
}
}
/// <summary>
/// Emits the IL for the setter
/// </summary>
/// <param name="setterIL">ILGenerator</param>
/// <param name="sourceField">The field where the source component is stored</param>
/// <param name="nestedType">Builder for nested type in case this property needs
/// to make one</param>
/// <param name="thisType">Builder for the declaring type</param>
protected override void ProtectedEmitSetter(ILGenerator setterIL, FieldBuilder sourceField, Lazy <TypeSpecifier> nestedType, TypeSpecifier thisType, string name)
{
var backingSetter = nestedType.Value.TypeBuilder.DefineField(
nestedType.Value.GetBackingSetterIdentifier(name),
_setter.GetType(),
FieldAttributes.Public | FieldAttributes.Static);
thisType.RunAfterCreation(() =>
{
backingSetter.SafeSetValue(null, _setter);
});
setterIL.Emit(OpCodes.Ldsfld, backingSetter);
setterIL.Emit(OpCodes.Ldarg_0);
setterIL.Emit(OpCodes.Ldfld, sourceField);
setterIL.Emit(OpCodes.Ldloc_0);
setterIL.Emit(OpCodes.Callvirt, typeof(Action <TComponent, TValue>).GetMethod("Invoke"));
}
/// <summary>
/// Emits the IL for a setter
/// </summary>
/// <param name="setterIL">ILGenerator</param>
/// <param name="sourceField">The field where the source component is stored</param>
/// <param name="nestedType">Builder for a nested type in case this property needs to make one</param>
/// <param name="thisType">Builder for the declaring type</param>
protected override void ProtectedEmitSetter(ILGenerator setterIL, FieldBuilder sourceField, Lazy <TypeSpecifier> nestedType, TypeSpecifier thisType, string name)
{
setterIL.Emit(OpCodes.Ldarg_0);
setterIL.Emit(OpCodes.Ldloc_0);
setterIL.Emit(OpCodes.Stfld, BackingField);
}
/// <summary>
/// Emits the IL for a getter
/// </summary>
/// <param name="getterIL">ILGenerator</param>
/// <param name="sourceField">The field where the source component is stored</param>
/// <param name="nestedType">Builder for a nested type in case this property needs to make one</param>
/// <param name="thisType">Builder for the declaring type</param>
protected override void ProtectedEmitGetter(ILGenerator getterIL, FieldBuilder sourceField, Lazy <TypeSpecifier> nestedType, TypeSpecifier thisType, string name)
{
BackingField = thisType.TypeBuilder.DefineField(thisType.GetBackingFieldIdentifier(name), typeof(TField), FieldAttributes.Private);
BackingField.SetCustomAttribute(Specification <string> .GeneratedCode);
getterIL.Emit(OpCodes.Ldarg_0);
getterIL.Emit(OpCodes.Ldfld, BackingField);
}
