/// <summary>
/// Creates array containing variables and their values.
/// </summary>
/// <param name="locals">The table of defined variables.</param>
/// <param name="names">Names of the variables - each chan be either
/// <see cref="string"/> or <see cref="PhpArray"/>. Names are retrived recursively from an array.</param>
/// <returns>The <see cref="PhpArray"/> which keys are names of variables and values are deep copies of
/// their values.</returns>
/// <remarks>
/// Items in <paramref name="names"/> which are neither of type <see cref="string"/> nor <see cref="PhpArray"/>
/// are ignored.</remarks>
/// <exception cref="PhpException"><paramref name="names"/> is a <B>null</B> reference.</exception>
public static PhpArray compact([ImportLocals] PhpArray locals, params PhpValue[] names)
{
if (names == null)
{
//PhpException.ArgumentNull("names");
//return null;
throw new ArgumentNullException(nameof(names));
}
PhpArray result = new PhpArray(names.Length);
for (int i = 0; i < names.Length; i++)
{
string name;
PhpArray array;
if ((name = PhpVariable.ToStringOrNull(names[i])) != null)
{
// if variable exists adds a copy of its current value to the result:
var value = locals[name];
if (value.IsSet)
{
result.Add(name, value.DeepCopy());
}
}
else if ((array = PhpVariable.ArrayOrNull(names[i])) != null)
{
// recursively searches for string variable names:
using (PhpHashtable.RecursiveEnumerator iterator = array.GetRecursiveEnumerator(false, true))
{
while (iterator.MoveNext())
{
if ((name = PhpVariable.ToStringOrNull(iterator.Current.Value)) != null)
{
// if variable exists adds a copy of its current value to the result:
var value = locals[name];
if (value.IsSet)
{
result.Add(name, value.DeepCopy());
}
}
}
}
}
}
//
return(result);
}
/// <summary>
/// Creates array containing variables and their values.
/// </summary>
/// <param name="localsData">The table of defined variables.</param>
/// <param name="names">Names of the variables - each chan be either
/// <see cref="string"/> or <see cref="PhpArray"/>. Names are retrived recursively from an array.</param>
/// <returns>The <see cref="PhpArray"/> which keys are names of variables and values are deep copies of
/// their values.</returns>
/// <remarks>
/// Items in <paramref name="names"/> which are neither of type <see cref="string"/> nor <see cref="PhpArray"/>
/// are ignored.</remarks>
/// <exception cref="PhpException"><paramref name="names"/> is a <B>null</B> reference.</exception>
public static PhpArray compact(QueryValue <LocalVariables> localsData, params PhpValue[] names)
{
if (names == null)
{
//PhpException.ArgumentNull("names");
//return null;
throw new ArgumentNullException(nameof(names));
}
var result = new PhpArray(names.Length);
var locals = localsData.Value.Locals;
for (int i = 0; i < names.Length; i++)
{
string name;
PhpArray array;
if ((name = PhpVariable.ToStringOrNull(names[i])) != null)
{
// if variable exists adds a copy of its current value to the result:
if (locals.TryGetValue(name, out var value))
{
result.Add(name, value.DeepCopy());
}
}
else if ((array = PhpVariable.ArrayOrNull(names[i])) != null)
{
// visit array values recursively
new CompactVisitor(locals, result).Accept(array);
}
}
//
return(result);
}