/// <summary> /// Emit the target of instance method invocation. /// </summary> /// <param name="cg"></param> /// <param name="targetExpr"></param> private static void EmitMethodTargetExpr(PHP.Core.CodeGenerator /*!*/ cg, Expression /*!*/ targetExpr) { // start a new operators chain (as the rest of chain is read) cg.ChainBuilder.Create(); cg.ChainBuilder.Begin(); cg.ChainBuilder.Lengthen(); // for hop over -> // prepare for operator invocation cg.EmitBoxing(targetExpr.Emit(cg)); cg.ChainBuilder.End(); }
/// <summary> /// Helper method, loads parameters onto evaluation stack. /// </summary> private static void EmitMethodCallParameters(PHP.Core.CodeGenerator /*!*/ cg, CallSignature callSignature) { foreach (var t in callSignature.GenericParams) { t.EmitLoadTypeDesc(cg, ResolveTypeFlags.UseAutoload | ResolveTypeFlags.ThrowErrors); // load DTypeDescs on the stack } foreach (var p in callSignature.Parameters) { cg.EmitBoxing(p.Emit(cg)); } // load boxed args on the stack }
/// <summary> /// Create and call <see cref="CallSite"/> for getting property. /// </summary> /// <param name="cg"><see cref="CodeGenerator"/>.</param> /// <param name="wantRef">Wheter <see cref="PhpReference"/> is expected as the result.</param> /// <param name="targetExpr">The expression representing the target (object).</param> /// <param name="targetObjectPlace">The place representing the target (<see cref="DObject"/>) iff <paramref name="targetExpr"/> is not provided.</param> /// <param name="targetPlace">The place representing the target (object) iff <paramref name="targetExpr"/> and <paramref name="targetObjectPlace"/> are not provided.</param> /// <param name="targetType">Type of target iff we are getting property statically.</param> /// <param name="fieldName">The name of the field. Can be null if the name is not known at compile time (indirect).</param> /// <param name="fieldNameExpr">The expression used to get field name in run time (iff <paramref name="fieldName"/> is <c>null</c>.</param> /// <param name="issetSemantics">Wheter we are only checking if the property exists. If true, no warnings are thrown during run time.</param> /// <returns>Type code of the value that is pushed onto the top of the evaluation stack.</returns> public PhpTypeCode EmitGetProperty( PHP.Core.CodeGenerator /*!*/ cg, bool wantRef, Expression targetExpr, IPlace targetObjectPlace, IPlace targetPlace, DType targetType, string fieldName, Expression fieldNameExpr, bool issetSemantics) { Debug.Assert(fieldName != null ^ fieldNameExpr != null); Debug.Assert(targetExpr != null || targetObjectPlace != null || targetPlace != null || targetType != null); // bool staticCall = (targetExpr == null && targetObjectPlace == null && targetPlace == null); // we are going to access static property bool fieldNameIsKnown = (fieldName != null); bool classContextIsKnown = (this.classContextPlace != null); // // binder flags: // Type returnType = wantRef ? Types.PhpReference[0] : Types.Object[0]; // // define the call site: // // List <Type> additionalArgs = new List <Type>(); if (!classContextIsKnown) { additionalArgs.Add(Types.DTypeDesc[0]); } if (!fieldNameIsKnown) { additionalArgs.Add(Types.String[0]); } var delegateTypeArgs = GetPropertyDelegateTypeArgs( staticCall ? Types.DTypeDesc[0] : ((targetObjectPlace != null) ? Types.DObject[0] : Types.Object[0]), // DTypeDesc of static field's declaring type || DObject if field called on DObject known at compile time || otherwise object additionalArgs.ToArray(), returnType); var delegateType = /*System.Linq.Expressions.Expression.*/ delegateBuilder.GetDelegateType(delegateTypeArgs, 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("get{0}_{1}", wantRef ? "ref" : string.Empty, fieldName ?? "$"), delegateType, (il) => { // <LOAD> Binder.{GetProperty|GetStaticProperty}( fieldName, classContext, issetSemantics, <returnType> ) if (fieldName != null) { il.Emit(OpCodes.Ldstr, fieldName); } else { il.Emit(OpCodes.Ldnull); } if (this.classContextPlace != null) { this.classContextPlace.EmitLoad(il); } else { il.Emit(OpCodes.Ldsfld, Fields.UnknownTypeDesc.Singleton); } il.LoadBool(issetSemantics); il.Emit(OpCodes.Ldtoken, returnType); il.Emit(OpCodes.Call, Methods.GetTypeFromHandle); il.Emit(OpCodes.Call, staticCall ? Methods.Binder.StaticGetProperty : Methods.Binder.GetProperty); }); // // call the CallSite: // // <field>.Target( <field>, <targetExpr|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) { targetType.EmitLoadTypeDesc(cg, ResolveTypeFlags.UseAutoload | ResolveTypeFlags.ThrowErrors); } else if (targetExpr != null) { cg.ChainBuilder.Lengthen(); // for hop over -> cg.EmitBoxing(targetExpr.Emit(cg)); // prepare for operator invocation } else if (targetObjectPlace != null) { targetObjectPlace.EmitLoad(cg.IL); } else if (targetPlace != null) { targetPlace.EmitLoad(cg.IL); } else { Debug.Fail(); } if (!classContextIsKnown) { cg.EmitLoadClassContext(); } if (!fieldNameIsKnown) { cg.EmitName(fieldName /*null*/, fieldNameExpr, true, PhpTypeCode.String); } cg.MarkTransientSequencePoint(); cg.IL.Emit(OpCodes.Callvirt, delegateType.GetMethod("Invoke")); cg.MarkTransientSequencePoint(); // return(PhpTypeCodeEnum.FromType(returnType)); }
/// <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)); }