C# EmitContext.EmitNullableHasValue方法代码示例

本文整理汇总了C#中EmitContext.EmitNullableHasValue方法的典型用法代码示例。如果您正苦于以下问题：C# EmitContext.EmitNullableHasValue方法的具体用法？C# EmitContext.EmitNullableHasValue怎么用？C# EmitContext.EmitNullableHasValue使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类EmitContext的用法示例。

在下文中一共展示了EmitContext.EmitNullableHasValue方法的14个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。

示例1: EmitUserDefinedLiftedLogicalShortCircuit

		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);
		}

开发者ID:jskripsky，项目名称:mono，代码行数:41，代码来源:BinaryExpression.cs

示例2: EmitLiftedUserDefinedOperator

		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);
		}

开发者ID:jskripsky，项目名称:mono，代码行数:45，代码来源:BinaryExpression.cs

示例3: EmitLiftedToNullUserDefinedOperator

		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);
		}

开发者ID:jskripsky，项目名称:mono，代码行数:27，代码来源:BinaryExpression.cs

示例4: EmitLiftedToNullBinary

		void EmitLiftedToNullBinary (EmitContext ec)
		{
			var ig = ec.ig;
			var left = ec.EmitStored (this.left);
			var right = ec.EmitStored (this.right);
			var result = ig.DeclareLocal (Type);

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

			ec.EmitNullableHasValue (left);
			ec.EmitNullableHasValue (right);
			ig.Emit (OpCodes.And);
			ig.Emit (OpCodes.Brtrue, has_value);

			ec.EmitNullableInitialize (result);

			ig.Emit (OpCodes.Br, done);

			ig.MarkLabel (has_value);

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

			EmitBinaryOperator (ec);

			ec.EmitNullableNew (result.LocalType);

			ig.MarkLabel (done);
		}

开发者ID:jskripsky，项目名称:mono，代码行数:30，代码来源:BinaryExpression.cs

示例5: EmitLiftedRelationalBinary

		void EmitLiftedRelationalBinary (EmitContext ec)
		{
			var ig = ec.ig;
			var left = ec.EmitStored (this.left);
			var right = ec.EmitStored (this.right);

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

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

			switch (NodeType) {
			case ExpressionType.Equal:
			case ExpressionType.NotEqual:
				ig.Emit (OpCodes.Bne_Un, ret);
				break;
			default:
				EmitBinaryOperator (ec);
				ig.Emit (OpCodes.Brfalse, ret);
				break;
			}

			ec.EmitNullableHasValue (left);
			ec.EmitNullableHasValue (right);

			switch (NodeType) {
			case ExpressionType.Equal:
				ig.Emit (OpCodes.Ceq);
				break;
			case ExpressionType.NotEqual:
				ig.Emit (OpCodes.Ceq);
				ig.Emit (OpCodes.Ldc_I4_0);
				ig.Emit (OpCodes.Ceq);
				break;
			default:
				ig.Emit (OpCodes.And);
				break;
			}

			ig.Emit (OpCodes.Br, done);

			ig.MarkLabel (ret);

			ig.Emit (NodeType == ExpressionType.NotEqual ? OpCodes.Ldc_I4_1 : OpCodes.Ldc_I4_0);

			ig.MarkLabel (done);
		}

开发者ID:jskripsky，项目名称:mono，代码行数:48，代码来源:BinaryExpression.cs

示例6: EmitCoalesce

		void EmitCoalesce (EmitContext ec)
		{
			var ig = ec.ig;
			var done = ig.DefineLabel ();
			var load_right = ig.DefineLabel ();

			var left = ec.EmitStored (this.left);
			var left_is_nullable = left.LocalType.IsNullable ();

			if (left_is_nullable)
				ec.EmitNullableHasValue (left);
			else
				ec.EmitLoad (left);

			ig.Emit (OpCodes.Brfalse, load_right);

			if (left_is_nullable && !Type.IsNullable ())
				ec.EmitNullableGetValue (left);
			else
				ec.EmitLoad (left);

			ig.Emit (OpCodes.Br, done);

			ig.MarkLabel (load_right);
			ec.Emit (this.right);

			ig.MarkLabel (done);
		}

开发者ID:jskripsky，项目名称:mono，代码行数:28，代码来源:BinaryExpression.cs

示例7: EmitConvertedCoalesce

		void EmitConvertedCoalesce (EmitContext ec)
		{
			var ig = ec.ig;
			var done = ig.DefineLabel ();
			var load_right = ig.DefineLabel ();

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

			if (left.LocalType.IsNullable ())
				ec.EmitNullableHasValue (left);
			else
				ec.EmitLoad (left);

			ig.Emit (OpCodes.Brfalse, load_right);

			ec.Emit (conversion);
			ec.EmitLoad (left);
			ig.Emit (OpCodes.Callvirt, conversion.Type.GetInvokeMethod ());

			ig.Emit (OpCodes.Br, done);

			ig.MarkLabel (load_right);
			ec.Emit (this.right);

			ig.MarkLabel (done);
		}

开发者ID:jskripsky，项目名称:mono，代码行数:26，代码来源:BinaryExpression.cs

示例8: EmitLiftedLogical

		void EmitLiftedLogical (EmitContext ec)
		{
			var ig = ec.ig;
			var and = NodeType == ExpressionType.And;
			var left = ec.EmitStored (this.left);
			var right = ec.EmitStored (this.right);

			var ret_from_left = ig.DefineLabel ();
			var ret_from_right = ig.DefineLabel ();
			var done = ig.DefineLabel ();

			ec.EmitNullableGetValueOrDefault (left);
			ig.Emit (OpCodes.Brtrue, ret_from_left);
			ec.EmitNullableGetValueOrDefault (right);
			ig.Emit (OpCodes.Brtrue, ret_from_right);

			ec.EmitNullableHasValue (left);
			ig.Emit (OpCodes.Brfalse, ret_from_left);

			ig.MarkLabel (ret_from_right);
			ec.EmitLoad (and ? left : right);
			ig.Emit (OpCodes.Br, done);

			ig.MarkLabel (ret_from_left);
			ec.EmitLoad (and ? right : left);

			ig.MarkLabel (done);
		}

开发者ID:jskripsky，项目名称:mono，代码行数:28，代码来源:BinaryExpression.cs

示例9: EmitLiftedLogicalShortCircuit

		void EmitLiftedLogicalShortCircuit (EmitContext ec)
		{
			var ig = ec.ig;
			var and = NodeType == ExpressionType.AndAlso;
			var left_is_null = ig.DefineLabel ();
			var ret_from_left = ig.DefineLabel ();
			var ret_null = ig.DefineLabel ();
			var ret_new = ig.DefineLabel();
			var done = ig.DefineLabel();

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

			ec.EmitNullableHasValue (left);
			ig.Emit (OpCodes.Brfalse, left_is_null);

			ec.EmitNullableGetValueOrDefault (left);

			ig.Emit (OpCodes.Ldc_I4_0);
			ig.Emit (OpCodes.Ceq);
			ig.Emit (and ? OpCodes.Brtrue : OpCodes.Brfalse, ret_from_left);

			ig.MarkLabel (left_is_null);
			var right = ec.EmitStored (this.right);

			ec.EmitNullableHasValue (right);
			ig.Emit (OpCodes.Brfalse_S, ret_null);

			ec.EmitNullableGetValueOrDefault (right);

			ig.Emit (OpCodes.Ldc_I4_0);
			ig.Emit (OpCodes.Ceq);

			ig.Emit (and ? OpCodes.Brtrue : OpCodes.Brfalse, ret_from_left);

			ec.EmitNullableHasValue (left);
			ig.Emit (OpCodes.Brfalse, ret_null);

			ig.Emit (and ? OpCodes.Ldc_I4_1 : OpCodes.Ldc_I4_0);
			ig.Emit (OpCodes.Br_S, ret_new);

			ig.MarkLabel (ret_from_left);
			ig.Emit (and ? OpCodes.Ldc_I4_0 : OpCodes.Ldc_I4_1);

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

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

			ig.MarkLabel (done);
		}

开发者ID:jskripsky，项目名称:mono，代码行数:53，代码来源:BinaryExpression.cs

示例10: EmitNullEquality

		void EmitNullEquality (EmitContext ec, Expression e)
		{
			var ig = ec.ig;

			if (IsLiftedToNull) {
				e.Emit (ec);
				if (e.Type != typeof (void))
					ig.Emit (OpCodes.Pop);

				ec.EmitNullableNew (typeof (bool?));
				return;
			}

			var se = ec.EmitStored (e);
			ec.EmitNullableHasValue (se);
			if (NodeType == ExpressionType.Equal) {
				ig.Emit (OpCodes.Ldc_I4_0);
				ig.Emit (OpCodes.Ceq);
			}		
		}

开发者ID:nlhepler，项目名称:mono，代码行数:20，代码来源:BinaryExpression.cs

示例11: EmitLiftedUnary

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

			var from = ec.EmitStored (operand);
			var to = ig.DeclareLocal (Type);

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

			ec.EmitNullableHasValue (from);
			ig.Emit (OpCodes.Brtrue, has_value);

			// if not has value
			ec.EmitNullableInitialize (to);

			ig.Emit (OpCodes.Br, done);

			ig.MarkLabel (has_value);
			// if has value
			ec.EmitNullableGetValueOrDefault (from);

			EmitUnaryOperator (ec);

			ec.EmitNullableNew (Type);

			ig.MarkLabel (done);
		}

开发者ID:qwertie，项目名称:Theraot，代码行数:28，代码来源:UnaryExpression.net30.cs

示例12: EmitLeftLiftedToNullBinary

 private void EmitLeftLiftedToNullBinary(EmitContext emitContext)
 {
     var ig = emitContext.ig;
     var ret = ig.DefineLabel();
     var done = ig.DefineLabel();
     var left = emitContext.EmitStored(_left);
     emitContext.EmitNullableHasValue(left);
     ig.Emit(OpCodes.Brfalse, ret);
     emitContext.EmitNullableGetValueOrDefault(left);
     emitContext.Emit(_right);
     EmitBinaryOperator(emitContext);
     emitContext.EmitNullableNew(Type);
     ig.Emit(OpCodes.Br, done);
     ig.MarkLabel(ret);
     var temp = ig.DeclareLocal(Type);
     emitContext.EmitNullableInitialize(temp);
     ig.MarkLabel(done);
 }

开发者ID:qwertie，项目名称:Theraot，代码行数:18，代码来源:BinaryExpression.net30.cs

示例13: EmitConvertedCoalesce

 private void EmitConvertedCoalesce(EmitContext emitContext)
 {
     var ig = emitContext.ig;
     var done = ig.DefineLabel();
     var load_right = ig.DefineLabel();
     var left = emitContext.EmitStored(_left);
     if (left.LocalType.IsNullable())
     {
         emitContext.EmitNullableHasValue(left);
     }
     else
     {
         emitContext.EmitLoad(left);
     }
     ig.Emit(OpCodes.Brfalse, load_right);
     emitContext.Emit(_conversion);
     emitContext.EmitLoad(left);
     ig.Emit(OpCodes.Callvirt, _conversion.Type.GetInvokeMethod());
     ig.Emit(OpCodes.Br, done);
     ig.MarkLabel(load_right);
     emitContext.Emit(_right);
     ig.MarkLabel(done);
 }

开发者ID:qwertie，项目名称:Theraot，代码行数:23，代码来源:BinaryExpression.net30.cs

示例14: EmitCoalesce

 private void EmitCoalesce(EmitContext emitContext)
 {
     var ig = emitContext.ig;
     var done = ig.DefineLabel();
     var load_right = ig.DefineLabel();
     var left = emitContext.EmitStored(_left);
     var left_is_nullable = left.LocalType.IsNullable();
     if (left_is_nullable)
     {
         emitContext.EmitNullableHasValue(left);
     }
     else
     {
         emitContext.EmitLoad(left);
     }
     ig.Emit(OpCodes.Brfalse, load_right);
     if (left_is_nullable && !Type.IsNullable())
     {
         emitContext.EmitNullableGetValue(left);
     }
     else
     {
         emitContext.EmitLoad(left);
     }
     ig.Emit(OpCodes.Br, done);
     ig.MarkLabel(load_right);
     emitContext.Emit(_right);
     ig.MarkLabel(done);
 }

开发者ID:qwertie，项目名称:Theraot，代码行数:29，代码来源:BinaryExpression.net30.cs

注：本文中的EmitContext.EmitNullableHasValue方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。