static void p5_hyperlisp_get_object_value_regex(ApplicationContext context, ActiveEventArgs e)
{
if (e.Args.Value is Regex)
{
return;
}
var strValue = XUtil.FormatNode(context, e.Args).ToString();
// Sanity check
if (!strValue.StartsWithEx("/"))
{
throw new LambdaException("Syntax error in regular expression, missing initial /", e.Args, context);
}
// Converting string to regular expression
var regexString = strValue.Substring(1); // Removing initial "/"
// More sanity check
if (!regexString.Contains("/"))
{
throw new LambdaException("Syntax error in regular expression, missing trailing /", e.Args, context);
}
// Retrieving options
var options = regexString.Substring(regexString.LastIndexOfEx("/") + 1);
// Removing options from actual regex string
regexString = regexString.Substring(0, regexString.LastIndexOfEx("/"));
e.Args.Value = new Regex(regexString, GetOptions(context, e.Args, options));
}
public static void lambda_return(ApplicationContext context, ActiveEventArgs e)
{
// Retrieving root for efficiency reasons, since everything we do from here, we do to root.
var root = e.Args.Root;
// Inserting "return signaling node", such that [eval] and similar constructs will break out of their current execution.
root.Insert(0, new Node("_return"));
// Checking value of return, and acting accordingly, making sure we return simple values as such, and node expression results as nodes.
var x = e.Args.Value as Expression;
if (x != null)
{
// Making sure we clean up after ourselves.
using (new ArgsRemover(e.Args)) {
// Source is an expression, evaluating it, and returning results back to caller.
var match = x.Evaluate(context, e.Args, e.Args);
if (match.TypeOfMatch == Match.MatchType.count)
{
// Simple count expression.
root.Value = match.Count;
}
else if (match.TypeOfMatch == Match.MatchType.node)
{
// Node values, single or multiple is irrelevant, still need to clone them, and insert them into root.
root.AddRange(match.Select(ix => ix.Node.Clone()));
}
else if (match.Count == 1)
{
// Single value, name or value type of value is irrelevant, adding to value anyways.
root.Value = match [0].Value;
}
else if (match.TypeOfMatch == Match.MatchType.name)
{
// Multiple name values.
root.AddRange(match.Select(ix => new Node(ix.Node.Name)));
}
else
{
// Multiple value values.
root.AddRange(match.Select(ix => new Node("", ix.Value)));
}
}
}
else if (e.Args.Value != null)
{
// Returning formatted value.
root.Value = XUtil.FormatNode(context, e.Args);
}
// Adding all children of [return] as result to evaluated root node, no need to clone.
root.InsertRange(1, e.Args.Children);
}
public static void lambda_src_dest(ApplicationContext context, ActiveEventArgs e)
{
// Figuring out type of source.
var x = e.Args.Value as Expression;
if (x != null)
{
// Source is an expression, evaluating it, and returning results back to caller.
var match = x.Evaluate(context, e.Args, e.Args);
// Removing all formatting nodes.
e.Args.RemoveAll(ix => ix.Name == "");
// Checking type of match.
if (match.TypeOfMatch == Match.MatchType.count)
{
// Simple count expression.
e.Args.Value = match.Count;
}
else if (match.TypeOfMatch == Match.MatchType.node)
{
// Node values, single or multiple is irrelevant, still need to clone them.
e.Args.AddRange(match.Select(ix => ix.Node.Clone()));
e.Args.Value = null;
}
else if (match.Count == 1)
{
// Single value, name or value type of value is irrelevant, adding to value anyways.
e.Args.Value = match [0].Value;
}
else if (match.TypeOfMatch == Match.MatchType.name)
{
// Multiple name values.
e.Args.AddRange(match.Select(ix => new Node(ix.Node.Name)));
e.Args.Value = null;
}
else
{
// Multiple value values.
e.Args.AddRange(match.Select(ix => new Node("", ix.Value)));
e.Args.Value = null;
}
}
else if (e.Args.Value != null)
{
// Returning formatted value.
e.Args.Value = XUtil.FormatNode(context, e.Args);
} // else, returning children nodes as is
}
public static void eval_x(ApplicationContext context, ActiveEventArgs e)
{
// House cleaning.
using (new ArgsRemover(e.Args, true)) {
// Looping through all destinations.
foreach (var idxMatch in XUtil.DestinationMatch(context, e.Args, true))
{
// Checking type of node value.
if (idxMatch.Node.Value is Expression)
{
// Evaluates result of expression, and substitues value with expression result.
idxMatch.Node.Value = idxMatch.Node.GetExValue <object> (context, null);
// Making sure we remove all formatting parameters for clarity.
idxMatch.Node.RemoveAll(ix => ix.Name == "");
}
else if (idxMatch.Node.Value != null)
{
// Formats value, and substitutes value with formatting result.
idxMatch.Node.Value = XUtil.FormatNode(context, idxMatch.Node);
} // Notice, we do not throw, to support recursive evaluations by using the /** iterator, where parts of results are not supposed to be forward evaluated.
}
}
}
