internal override Expression BuildExpression(Expression callerExpression = null)
{
var left = Left.BuildExpression(callerExpression);
var right = Right.BuildExpression(callerExpression);
return(Expression.MakeIndex(left, left.Type.GetProperty("Item", new[] { right.Type }), new [] { right }));
}
internal override Expression BuildExpression(Expression callerExpression = null)
{
var rightType = Right.BuildExpression(callerExpression).Type;
if (!rightType.IsNullable())
{
rightType = rightType.MakeNullableType();
}
return(Expression.TypeAs(Left.BuildExpression(callerExpression), rightType));
}
internal override Expression BuildExpression(Expression callerExpression = null)
{
var left = Left.BuildExpression(callerExpression);
var right = Right.BuildExpression(callerExpression);
if (left is ConstantExpression leftValue && leftValue.Value == null)
{
left = Expression.Convert(left, right.Type);
}
return(Expression.Coalesce(left, right));
}
internal override Expression BuildExpression(Expression callerExpression = null)
{
var left = Left.BuildExpression(callerExpression);
var right = Right.BuildExpression(Left.BuildExpression(callerExpression));
if (!right.Type.IsNullable())
{
right = Expression.Convert(right, right.Type.MakeNullableType());
}
return(Expression.Condition(Expression.Equal(left, Expression.Constant(null, left.Type)), Expression.Constant(null, right.Type), right));
}
internal override Expression BuildExpression(Expression callerExpression = null)
{
if (callerExpression == null)
{
throw new ArgumentNullException(nameof(callerExpression));
}
var parameterName = ((IdentifierNode)Left).Name;
var parameterType = GetParameterType();
Debug.Assert(parameterType != null);
var parameterExpression = Expression.Parameter(parameterType, parameterName);
return(Expression.Lambda(Right.BuildExpression(parameterExpression), parameterExpression));
Type GetParameterType()
{
return(callerExpression.Type == typeof(string) ? typeof(char) :
callerExpression.Type.IsArray?callerExpression.Type.GetElementType() :
callerExpression.Type.GetGenericArguments()[0]);
}
}
internal override Expression BuildExpression(Expression callerExpression = null)
{
return(Expression.Divide(Left.BuildExpression(callerExpression), Right.BuildExpression(callerExpression)));
}
internal override Expression BuildExpression(Expression callerExpression = null)
{
return(Expression.TypeIs(Left.BuildExpression(callerExpression), Right.BuildExpression(callerExpression).Type));
}
internal override Expression BuildExpression(Expression callerExpression = null)
{
return(Expression.LessThanOrEqual(Left.BuildExpression(callerExpression), Right.BuildExpression(callerExpression)));
}
