public Expression Deserialize(IDeserializationContext context, IExpressionNode node)
{
var handler = serviceProvider.GetService(
typeof(IExpressionDeserializer <>).MakeGenericType(node.GetType())
);
if (handler == null)
{
throw new InvalidOperationException(
$"No deserializer registered for node type {node.GetType()}"
);
}
return((handler as IExpressionDeserializer).Deserialize(context, node));
}
/// <summary>
/// Evaluates the expression as an lvalue and answers the result type. </summary>
/// <param name="context"> used to resolve properties (<code>base.property</code> and <code>base[property]</code>)
/// and to determine the result from the last base/property pair </param>
/// <returns> lvalue evaluation type or <code>null</code> for rvalue expressions </returns>
/// <exception cref="ELException"> if evaluation fails (e.g. property not found, type conversion failed, ...) </exception>
public override Type GetType(ELContext context)
{
return(node.GetType(bindings, context));
}
public virtual void VisitExpression(IExpressionNode node)
{
if (node == null)
return;
if (node is SqlConstantExpressionNode) {
VisitConstantExpression((SqlConstantExpressionNode) node);
} else if (node is SqlReferenceExpressionNode) {
VisitReferenceExpression((SqlReferenceExpressionNode) node);
} else if (node is SqlVariableRefExpressionNode) {
VisitVariableRefExpression((SqlVariableRefExpressionNode) node);
} else if (node is SqlBetweenExpressionNode) {
VisitBetweenExpression((SqlBetweenExpressionNode) node);
} else if (node is SqlCaseExpressionNode) {
VisitCaseExpression((SqlCaseExpressionNode) node);
} else if (node is SqlFunctionCallExpressionNode) {
VisitFunctionCall((SqlFunctionCallExpressionNode) node);
} else if (node is SqlExpressionTupleNode) {
VisitTupleExpression((SqlExpressionTupleNode) node);
} else if (node is SqlBinaryExpressionNode) {
VisitBinaryExpression((SqlBinaryExpressionNode) node);
} else if (node is SqlUnaryExpressionNode) {
VisitUnaryExpression((SqlUnaryExpressionNode) node);
} else if (node is SqlQueryExpressionNode) {
VisitQueryExpression((SqlQueryExpressionNode) node);
} else {
throw new InvalidOperationException(String.Format("The expression node of type '{0}' is invalid.", node.GetType()));
}
}
public void visit(IExpressionNode value)
{
string s = value.GetType().Name + ".";
prepare_node(value.type, s + "");
}
public virtual void VisitExpression(IExpressionNode node)
{
if (node == null)
{
return;
}
if (node is SqlConstantExpressionNode)
{
VisitConstantExpression((SqlConstantExpressionNode)node);
}
else if (node is SqlReferenceExpressionNode)
{
VisitReferenceExpression((SqlReferenceExpressionNode)node);
}
else if (node is SqlVariableRefExpressionNode)
{
VisitVariableRefExpression((SqlVariableRefExpressionNode)node);
}
else if (node is SqlBetweenExpressionNode)
{
VisitBetweenExpression((SqlBetweenExpressionNode)node);
}
else if (node is SqlCaseExpressionNode)
{
VisitCaseExpression((SqlCaseExpressionNode)node);
}
else if (node is SqlFunctionCallExpressionNode)
{
VisitFunctionCall((SqlFunctionCallExpressionNode)node);
}
else if (node is SqlExpressionTupleNode)
{
VisitTupleExpression((SqlExpressionTupleNode)node);
}
else if (node is SqlBinaryExpressionNode)
{
VisitBinaryExpression((SqlBinaryExpressionNode)node);
}
else if (node is SqlUnaryExpressionNode)
{
VisitUnaryExpression((SqlUnaryExpressionNode)node);
}
else if (node is SqlQueryExpressionNode)
{
VisitQueryExpression((SqlQueryExpressionNode)node);
}
else
{
throw new InvalidOperationException(String.Format("The expression node of type '{0}' is invalid.", node.GetType()));
}
}
public void visit(IExpressionNode value)
{
throw new System.NotSupportedException(value.GetType().ToString());
}
