private PhpTypeCode EmitGetInternal(CodeGenerator/*!*/ codeGenerator, IPlace instance, bool wantRef,
ConstructedType constructedType, bool runtimeVisibilityCheck, bool setAliasedFlag)
{
ILEmitter il = codeGenerator.IL;
if (IsStatic)
{
if (runtimeVisibilityCheck || UpgradesVisibility)
{
// let the operator to check the visibility:
return codeGenerator.EmitGetStaticPropertyOperator(DeclaringType, this.FullName, null, wantRef);
}
if (!IsAppStatic) Implementor.EmitThreadStaticInit(codeGenerator, constructedType);
// retrieve field value
il.Emit(OpCodes.Ldsfld, DType.MakeConstructed(RealField, constructedType));
if (wantRef)
{
if (setAliasedFlag)
{
// set IsAliased to true
il.Emit(OpCodes.Dup);
il.Emit(OpCodes.Ldc_I4_1);
il.EmitCall(OpCodes.Callvirt, Properties.PhpReference_IsAliased.GetSetMethod(), null);
}
return PhpTypeCode.PhpReference;
}
else
{
il.Emit(OpCodes.Ldfld, Fields.PhpReference_Value);
return PhpTypeCode.Object;
}
}
else
{
// LOAD Operators.GetObjectFieldDirect[Ref](this,this.<field>,<name>,<type desc>,[<quiet>]);
codeGenerator.EmitLoadSelf();
instance.EmitLoad(il);
il.Emit(OpCodes.Ldfld, DType.MakeConstructed(RealField, constructedType));
il.Emit(OpCodes.Ldstr, Name.ToString());
codeGenerator.EmitLoadClassContext();
if (wantRef)
{
il.Emit(OpCodes.Call, Methods.Operators.GetObjectFieldDirectRef);
return PhpTypeCode.PhpReference;
}
else
{
il.LoadBool(codeGenerator.ChainBuilder.QuietRead);
il.Emit(OpCodes.Call, Methods.Operators.GetObjectFieldDirect);
return PhpTypeCode.Object;
}
}
}
/// <summary>
/// Emit call of the instance/static method. This defines the call site and call it using given parameters.
/// </summary>
/// <param name="cg">Current code <see cref="CodeGenerator"/>.</param>
/// <param name="returnType">Return type of the method call determined by current access of the method call.</param>
/// <param name="targetExpr">The method call instance expression (the target) if it is an instance method call.</param>
/// <param name="targetType">The target type if it is a static method call.</param>
/// <param name="methodFullName">If known at compile time, the method name. Otherwise <c>null</c>.</param>
/// <param name="methodNameExpr">If the <paramref name="methodFullName"/> is null, this will be the expression giving the method name in run time.</param>
/// <param name="callSignature">The call signature of the method call.</param>
/// <returns>The resulting value type code. This value will be pushed onto the evaluation stack.</returns>
public PhpTypeCode EmitMethodCall(
PHP.Core.CodeGenerator /*!*/ cg, Type returnType,
Expression /*!*/ targetExpr, DType /*!*/ targetType,
string methodFullName, Expression methodNameExpr, CallSignature callSignature)
{
Debug.Assert(methodFullName != null ^ methodNameExpr != null);
//
bool staticCall = (targetExpr == null); // we are going to emit static method call
//bool methodNameIsKnown = (methodFullName != null);
//bool classContextIsKnown = (this.classContextPlace != null);
//
// define the call site:
//
var delegateType = /*System.Linq.Expressions.Expression.*/ delegateBuilder.GetDelegateType(
MethodCallDelegateTypeArgs(
callSignature,
staticCall ? Types.DObject[0] : Types.Object[0],
MethodCallDelegateAdditionalArguments(staticCall, methodFullName != null, this.classContextPlace != null),
returnType),
callSitesCount); // (J) do not create dynamic delegates in dynamic modules, so they can be referenced from non-transient assemblies
//
var field = DefineCallSite(cg.IL, string.Format("call_{0}", methodFullName ?? "$"), delegateType, (il) =>
{
// <LOAD> Binder.{MethodCall|StaticMethodCall}( methodFullName, genericParamsCount, paramsCount, classContext, <returnType> )
if (methodFullName != null)
{
il.Emit(OpCodes.Ldstr, methodFullName);
}
else
{
il.Emit(OpCodes.Ldnull);
}
il.LdcI4(callSignature.GenericParams.Count);
il.LdcI4(callSignature.Parameters.Count);
if (this.classContextPlace != null)
{
this.classContextPlace.EmitLoad(il);
}
else
{
il.Emit(OpCodes.Ldsfld, Fields.UnknownTypeDesc.Singleton);
}
il.Emit(OpCodes.Ldtoken, returnType);
il.Emit(OpCodes.Call, Methods.GetTypeFromHandle);
il.Emit(OpCodes.Call, staticCall ? Methods.Binder.StaticMethodCall : Methods.Binder.MethodCall);
});
//
// call the CallSite:
//
// <field>.Target( <field>, <targetExpr|self>, <scriptContext>, <callSignature.EmitLoadOnEvalStack>, <targetType>?, (classContext)?, <methodNameExpr>? ):
cg.IL.Emit(OpCodes.Ldsfld, field);
cg.IL.Emit(OpCodes.Ldfld, field.FieldType.GetField("Target"));
cg.IL.Emit(OpCodes.Ldsfld, field);
if (staticCall)
{
cg.EmitLoadSelf();
}
else
{
EmitMethodTargetExpr(cg, targetExpr);
}
cg.EmitLoadScriptContext();
EmitMethodCallParameters(cg, callSignature);
if (staticCall)
{
targetType.EmitLoadTypeDesc(cg, ResolveTypeFlags.UseAutoload | ResolveTypeFlags.ThrowErrors);
}
if (/*!classContextIsKnown*/ this.classContextPlace == null)
{
cg.EmitLoadClassContext();
}
if (/*!methodNameIsKnown*/ methodFullName == null)
{
cg.EmitName(methodFullName /*null*/, methodNameExpr, true);
}
cg.MarkTransientSequencePoint();
cg.IL.Emit(OpCodes.Callvirt, delegateType.GetMethod("Invoke"));
cg.MarkTransientSequencePoint();
//
return(PhpTypeCodeEnum.FromType(returnType));
}