internal override PhpTypeCode EmitGet(CodeGenerator /*!*/ codeGenerator, ConstructedType constructedType,
bool runtimeVisibilityCheck, string fallbackName)
{
ILEmitter il = codeGenerator.IL;
if (HasValue)
{
il.LoadLiteral(Value);
return(PhpTypeCodeEnum.FromObject(Value));
}
else
{
Debug.Assert(realField != null);
il.Emit(OpCodes.Ldsfld, DType.MakeConstructed(realField, constructedType));
return(PhpTypeCodeEnum.FromType(realField.FieldType));
}
}
/// <summary>
/// Emits stub for one overridden/implemented/exported CLR overload.
/// </summary>
/// <param name="il"></param>
/// <param name="scriptContextPlace"></param>
/// <param name="stubParameters">The overload parameters.</param>
/// <param name="stubTypeParameters">The overload type parameters.</param>
/// <param name="stubReturnType">The overload return type.</param>
/// <param name="target">The overriding/implementing/exporting method.</param>
/// <param name="targetType">The type (perhaps constructed) that declared <paramref name="target"/>.</param>
public static void EmitMethodStubBody(ILEmitter /*!*/ il, IPlace /*!*/ scriptContextPlace,
ParameterInfo[] /*!*/ stubParameters, Type[] /*!*/ stubTypeParameters,
Type /*!*/ stubReturnType, PhpMethod /*!*/ target, DType /*!*/ targetType)
{
bool stub_is_static = il.MethodBase.IsStatic;
ClrStubBuilder stub_builder =
new ClrStubBuilder(il, scriptContextPlace, stubParameters.Length, (stub_is_static ? 0 : 1));
if (stubParameters.Length >= target.Signature.MandatoryParamCount &&
stubTypeParameters.Length >= target.Signature.MandatoryGenericParamCount &&
(target.Properties & RoutineProperties.IsArgsAware) == 0)
{
// we can directly call the target argful
if (!stub_is_static)
{
il.Ldarg(FunctionBuilder.ArgThis);
}
scriptContextPlace.EmitLoad(il);
stub_builder.EmitLoadArgfullParameters(stubParameters, stubTypeParameters, target);
// invoke the target (virtually if it's not static)
il.Emit(stub_is_static ? OpCodes.Call : OpCodes.Callvirt,
DType.MakeConstructed(target.ArgFullInfo, targetType as ConstructedType));
}
else
{
// we have to take the argless way
stub_builder.EmitLoadArglessParameters(stubParameters, stubTypeParameters, target);
// invoke the target's argless
// TODO: this is not behaving 100% correct, because we're losing virtual dispatch here
if (stub_is_static)
{
il.Emit(OpCodes.Ldnull);
}
else
{
il.Ldarg(FunctionBuilder.ArgThis);
}
scriptContextPlace.EmitLoad(il);
il.Emit(OpCodes.Ldfld, Fields.ScriptContext_Stack);
il.Emit(OpCodes.Call, DType.MakeConstructed(target.ArgLessInfo, targetType as ConstructedType));
}
// do not keep it on stack needlessly
if (stubReturnType == Types.Void)
{
il.Emit(OpCodes.Pop);
}
// convert ref/out parameters back to CLR type
for (int i = 0; i < stubParameters.Length; i++)
{
stub_builder.EmitStoreClrParameter(stubParameters[i]);
}
if (stubReturnType != Types.Void)
{
// convert the return parameter back to CLR type
stub_builder.EmitConvertReturnValue(
stubReturnType,
target.Signature.AliasReturn ? PhpTypeCode.PhpReference : PhpTypeCode.Object);
}
il.Emit(OpCodes.Ret);
}
