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public static Unary ( SqlExpressionType expressionType, |
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| expressionType | SqlExpressionType | |
| operand | ||
| Résultat | ||
public override SqlUnaryExpression Deserialize(BinaryReader reader)
{
var expType = (SqlExpressionType)reader.ReadByte();
var exp = ReadExpression(reader);
return(SqlExpression.Unary(expType, exp));
}
public static void CreateUnary(SqlExpressionType expressionType, object value)
{
var obj = SqlObject.New(SqlValueUtil.FromObject(value));
var operand = SqlExpression.Constant(obj);
var exp = SqlExpression.Unary(expressionType, operand);
Assert.NotNull(exp.Operand);
Assert.IsType <SqlConstantExpression>(exp.Operand);
}
public static void GetUnaryType(SqlExpressionType expressionType, object value)
{
var obj = SqlObject.New(SqlValueUtil.FromObject(value));
var operand = SqlExpression.Constant(obj);
var exp = SqlExpression.Unary(expressionType, operand);
var sqlType = exp.Type;
Assert.Equal(obj.Type, sqlType);
}
public static void GetUnaryString(SqlExpressionType expressionType, object value, string expected)
{
var obj = SqlObject.New(SqlValueUtil.FromObject(value));
var operand = SqlExpression.Constant(obj);
var exp = SqlExpression.Unary(expressionType, operand);
var s = exp.ToString();
Assert.Equal(expected, s);
}
public static void SerializeUnary(SqlExpressionType expressionType, object value)
{
var obj = SqlObject.New(SqlValueUtil.FromObject(value));
var operand = SqlExpression.Constant(obj);
var exp = SqlExpression.Unary(expressionType, operand);
var result = BinarySerializeUtil.Serialize(exp);
Assert.Equal(exp.ExpressionType, result.ExpressionType);
}
public virtual SqlExpression VisitUnary(SqlUnaryExpression expression)
{
var operand = expression.Operand;
if (operand != null)
{
operand = Visit(operand);
}
return(SqlExpression.Unary(expression.ExpressionType, operand));
}
public static async Task ReduceUnary(SqlExpressionType expressionType, object value, object expected)
{
var obj = SqlObject.New(SqlValueUtil.FromObject(value));
var operand = SqlExpression.Constant(obj);
var exp = SqlExpression.Unary(expressionType, operand);
Assert.NotNull(exp.Operand);
Assert.IsType <SqlConstantExpression>(exp.Operand);
Assert.True(exp.CanReduce);
var reduced = await exp.ReduceAsync(null);
Assert.NotNull(reduced);
Assert.IsType <SqlConstantExpression>(reduced);
var expectedResult = SqlObject.New(SqlValueUtil.FromObject(expected));
Assert.Equal(expectedResult, ((SqlConstantExpression)reduced).Value);
}
public static void VisitUnary()
{
var exp = SqlExpression.Unary(SqlExpressionType.UnaryPlus, SqlExpression.Constant(SqlObject.Integer(33)));
Visit(exp);
}