|
public static Coalesce ( |
||
| left | An |
|
| right | An |
|
| return | ||
public void BinaryConversion()
{
var @object = typeof(object);
var @null =
LinqExpression.Default(
@object);
var expression =
LinqExpression.Coalesce(
@null,
@null,
LinqExpression.Lambda(
@null,
LinqExpression.Parameter(
@object)));
ShouldRoundrip(expression);
}
public void Conversion()
{
var @object = typeof(object);
var @null =
LinqExpression.Default(
@object);
var expected =
LinqExpression.Coalesce(
@null,
@null,
LinqExpression.Lambda(
@null,
LinqExpression.Parameter(
@object)));
var actual = $@"
@prefix : <http://example.com/> .
@prefix xt: <http://example.com/ExpressionTypes/> .
:s
:binaryExpressionType xt:Coalesce ;
:binaryLeft _:null ;
:binaryRight _:null ;
:binaryConversion [
:lambdaBody _:null ;
:lambdaParameters (
[
:parameterType _:object ;
]
) ;
] ;
.
_:object :typeName ""System.Object"" .
_:null :defaultType _:object .
";
ShouldBe(actual, expected);
}
public override SysExpr ToExpression()
{
switch (NodeType)
{
case ExpressionType.Add:
return(SysExpr.Add(Left.ToExpression(), Right.ToExpression()));
case ExpressionType.Subtract:
return(SysExpr.Subtract(Left.ToExpression(), Right.ToExpression()));
case ExpressionType.Multiply:
return(SysExpr.Multiply(Left.ToExpression(), Right.ToExpression()));
case ExpressionType.Divide:
return(SysExpr.Divide(Left.ToExpression(), Right.ToExpression()));
case ExpressionType.Coalesce:
return(SysExpr.Coalesce(Left.ToExpression(), Right.ToExpression()));
default:
throw new NotSupportedException($"Not a valid {NodeType} for arithmetic binary expression.");
}
}
private BinaryExpression BinaryExpression(
ExpressionType nodeType, System.Type type, JObject obj)
{
var left = this.Prop(obj, "left", this.Expression);
var right = this.Prop(obj, "right", this.Expression);
var method = this.Prop(obj, "method", this.Method);
var conversion = this.Prop(obj, "conversion", this.LambdaExpression);
var liftToNull = this.Prop(obj, "liftToNull").Value <bool>();
switch (nodeType)
{
case ExpressionType.Add: return(Expr.Add(left, right, method));
case ExpressionType.AddAssign: return(Expr.AddAssign(left, right, method, conversion));
case ExpressionType.AddAssignChecked: return(Expr.AddAssignChecked(left, right, method, conversion));
case ExpressionType.AddChecked: return(Expr.AddChecked(left, right, method));
case ExpressionType.And: return(Expr.And(left, right, method));
case ExpressionType.AndAlso: return(Expr.AndAlso(left, right, method));
case ExpressionType.AndAssign: return(Expr.AndAssign(left, right, method, conversion));
case ExpressionType.ArrayIndex: return(Expr.ArrayIndex(left, right));
case ExpressionType.Assign: return(Expr.Assign(left, right));
case ExpressionType.Coalesce: return(Expr.Coalesce(left, right, conversion));
case ExpressionType.Divide: return(Expr.Divide(left, right, method));
case ExpressionType.DivideAssign: return(Expr.DivideAssign(left, right, method, conversion));
case ExpressionType.Equal: return(Expr.Equal(left, right, liftToNull, method));
case ExpressionType.ExclusiveOr: return(Expr.ExclusiveOr(left, right, method));
case ExpressionType.ExclusiveOrAssign: return(Expr.ExclusiveOrAssign(left, right, method, conversion));
case ExpressionType.GreaterThan: return(Expr.GreaterThan(left, right, liftToNull, method));
case ExpressionType.GreaterThanOrEqual: return(Expr.GreaterThanOrEqual(left, right, liftToNull, method));
case ExpressionType.LeftShift: return(Expr.LeftShift(left, right, method));
case ExpressionType.LeftShiftAssign: return(Expr.LeftShiftAssign(left, right, method, conversion));
case ExpressionType.LessThan: return(Expr.LessThan(left, right, liftToNull, method));
case ExpressionType.LessThanOrEqual: return(Expr.LessThanOrEqual(left, right, liftToNull, method));
case ExpressionType.Modulo: return(Expr.Modulo(left, right, method));
case ExpressionType.ModuloAssign: return(Expr.ModuloAssign(left, right, method, conversion));
case ExpressionType.Multiply: return(Expr.Multiply(left, right, method));
case ExpressionType.MultiplyAssign: return(Expr.MultiplyAssign(left, right, method, conversion));
case ExpressionType.MultiplyAssignChecked: return(Expr.MultiplyAssignChecked(left, right, method, conversion));
case ExpressionType.MultiplyChecked: return(Expr.MultiplyChecked(left, right, method));
case ExpressionType.NotEqual: return(Expr.NotEqual(left, right, liftToNull, method));
case ExpressionType.Or: return(Expr.Or(left, right, method));
case ExpressionType.OrAssign: return(Expr.OrAssign(left, right, method, conversion));
case ExpressionType.OrElse: return(Expr.OrElse(left, right, method));
case ExpressionType.Power: return(Expr.Power(left, right, method));
case ExpressionType.PowerAssign: return(Expr.PowerAssign(left, right, method, conversion));
case ExpressionType.RightShift: return(Expr.RightShift(left, right, method));
case ExpressionType.RightShiftAssign: return(Expr.RightShiftAssign(left, right, method, conversion));
case ExpressionType.Subtract: return(Expr.Subtract(left, right, method));
case ExpressionType.SubtractAssign: return(Expr.SubtractAssign(left, right, method, conversion));
case ExpressionType.SubtractAssignChecked: return(Expr.SubtractAssignChecked(left, right, method, conversion));
case ExpressionType.SubtractChecked: return(Expr.SubtractChecked(left, right, method));
default: throw new NotSupportedException();
}
}
public override SysExpr ToExpression() => SysExpr.Coalesce(Left.ToExpression(), Right.ToExpression(), Conversion.ToLambdaExpression());
