C# EmitContext.EmitCall方法代码示例

		void EmitPropertyAccess (EmitContext ec, PropertyInfo property)
		{
			var getter = property.GetGetMethod (true);
			if (!getter.IsStatic)
				ec.EmitLoadSubject (expression);

			ec.EmitCall (getter);
		}

 private void EmitPropertyAccess(EmitContext emitContext, PropertyInfo property)
 {
     var getter = property.GetGetMethod(true);
     if (!getter.IsStatic)
     {
         emitContext.EmitLoadSubject(_expression);
     }
     emitContext.EmitCall(getter);
 }

		void EmitPropertyAssignment (EmitContext ec, PropertyInfo property, LocalBuilder local)
		{
			var setter = property.GetSetMethod (true);
			if (setter == null)
				throw new InvalidOperationException ();

			ec.EmitLoadSubject (local);
			expression.Emit (ec);
			ec.EmitCall (setter);
		}

		LocalBuilder EmitLoadProperty (EmitContext ec, PropertyInfo property)
		{
			var getter = property.GetGetMethod (true);
			if (getter == null)
				throw new NotSupportedException ();

			var store = ec.ig.DeclareLocal (property.PropertyType);
			ec.EmitCall (getter);
			ec.ig.Emit (OpCodes.Stloc, store);
			return store;
		}

		void EmitUserDefinedLiftedLogicalShortCircuit (EmitContext ec)
		{
			var ig = ec.ig;
			var and = NodeType == ExpressionType.AndAlso;

			var left_is_null = ig.DefineLabel ();
			var ret_left = ig.DefineLabel ();
			var ret_null = ig.DefineLabel ();
			var done = ig.DefineLabel ();

			var left = ec.EmitStored (this.left);

			ec.EmitNullableHasValue (left);
			ig.Emit (OpCodes.Brfalse, and ? ret_null : left_is_null);

			ec.EmitNullableGetValueOrDefault (left);
			ec.EmitCall (and ? GetFalseOperator () : GetTrueOperator ());
			ig.Emit (OpCodes.Brtrue, ret_left);

			ig.MarkLabel (left_is_null);
			var right = ec.EmitStored (this.right);
			ec.EmitNullableHasValue (right);
			ig.Emit (OpCodes.Brfalse, ret_null);

			ec.EmitNullableGetValueOrDefault (left);
			ec.EmitNullableGetValueOrDefault (right);
			ec.EmitCall (method);

			ec.EmitNullableNew (Type);
			ig.Emit (OpCodes.Br, done);

			ig.MarkLabel (ret_left);
			ec.EmitLoad (left);
			ig.Emit (OpCodes.Br, done);

			ig.MarkLabel (ret_null);
			var ret = ig.DeclareLocal (Type);
			ec.EmitNullableInitialize (ret);

			ig.MarkLabel (done);
		}

		void EmitLiftedToNullUserDefinedOperator (EmitContext ec)
		{
			var ig = ec.ig;

			var ret = ig.DefineLabel ();
			var done = ig.DefineLabel ();

			var left = ec.EmitStored (this.left);
			var right = ec.EmitStored (this.right);

			ec.EmitNullableHasValue (left);
			ec.EmitNullableHasValue (right);
			ig.Emit (OpCodes.And);
			ig.Emit (OpCodes.Brfalse, ret);

			ec.EmitNullableGetValueOrDefault (left);
			ec.EmitNullableGetValueOrDefault (right);
			ec.EmitCall (method);
			ec.EmitNullableNew (Type);
			ig.Emit (OpCodes.Br, done);

			ig.MarkLabel (ret);
			var temp = ig.DeclareLocal (Type);
			ec.EmitNullableInitialize (temp);

			ig.MarkLabel (done);
		}

		void EmitLiftedUserDefinedOperator (EmitContext ec)
		{
			var ig = ec.ig;

			var ret_true = ig.DefineLabel ();
			var ret_false = ig.DefineLabel ();
			var done = ig.DefineLabel ();

			var left = ec.EmitStored (this.left);
			var right = ec.EmitStored (this.right);

			ec.EmitNullableHasValue (left);
			ec.EmitNullableHasValue (right);
			switch (NodeType) {
			case ExpressionType.Equal:
				ig.Emit (OpCodes.Bne_Un, ret_false);
				ec.EmitNullableHasValue (left);
				ig.Emit (OpCodes.Brfalse, ret_true);
				break;
			case ExpressionType.NotEqual:
				ig.Emit (OpCodes.Bne_Un, ret_true);
				ec.EmitNullableHasValue (left);
				ig.Emit (OpCodes.Brfalse, ret_false);
				break;
			default:
				ig.Emit (OpCodes.And);
				ig.Emit (OpCodes.Brfalse, ret_false);
				break;
			}

			ec.EmitNullableGetValueOrDefault (left);
			ec.EmitNullableGetValueOrDefault (right);
			ec.EmitCall (method);
			ig.Emit (OpCodes.Br, done);

			ig.MarkLabel (ret_true);
			ig.Emit (OpCodes.Ldc_I4_1);
			ig.Emit (OpCodes.Br, done);

			ig.MarkLabel (ret_false);
			ig.Emit (OpCodes.Ldc_I4_0);
			ig.Emit (OpCodes.Br, done);

			ig.MarkLabel (done);
		}

		void EmitUserDefinedLogicalShortCircuit (EmitContext ec)
		{
			var ig = ec.ig;
			var and = NodeType == ExpressionType.AndAlso;

			var done = ig.DefineLabel ();

			var left = ec.EmitStored (this.left);

			ec.EmitLoad (left);
			ig.Emit (OpCodes.Dup);
			ec.EmitCall (and ? GetFalseOperator () : GetTrueOperator ());
			ig.Emit (OpCodes.Brtrue, done);

			ec.Emit (this.right);
			ec.EmitCall (method);

			ig.MarkLabel (done);
		}

		internal override void Emit (EmitContext ec)
		{
			ec.EmitCall (obj, arguments, method);
		}

 internal void Emit(EmitContext emitContext, LocalBuilder local)
 {
     emitContext.EmitCall(local, _arguments, _addMethod);
     EmitPopIfNeeded(emitContext);
 }

		void EmitUserDefinedOperator (EmitContext ec)
		{
			if (!IsLifted) {
				ec.Emit (operand);
				ec.EmitCall (method);
			} else if (IsLiftedToNull) {
				EmitUserDefinedLiftedToNullOperator (ec);
			} else
				EmitUserDefinedLiftedOperator (ec);
		}

		void EmitUserDefinedLiftedOperator (EmitContext ec)
		{
			var local = ec.EmitStored (operand);
			ec.EmitNullableGetValue (local);
			ec.EmitCall (method);
		}

		void EmitConvertFromNullable (EmitContext ec)
		{
			if (IsBoxing ()) {
				ec.Emit (operand);
				EmitBox (ec);
				return;
			}

			ec.EmitCall (operand, operand.Type.GetMethod ("get_Value"));

			if (operand.Type.GetNotNullableType () != Type) {
				EmitPrimitiveConversion (ec,
					operand.Type.GetNotNullableType (),
					Type);
			}
		}

		internal override void Emit (EmitContext ec)
		{
			ec.EmitCall (expression, arguments, expression.Type.GetInvokeMethod ());
		}

 internal override void Emit(EmitContext emitContext)
 {
     emitContext.EmitCall(_obj, _arguments, _method);
 }