public Value For()
{
using var assistant = new ParameterAssistant(Arguments);
var block = assistant.Block();
if (block != null)
{
assistant.LoopParameters();
Func <string, bool> func = _ => true;
if (filter.IsNotEmpty())
{
func = l => l.IndexOf(filter, StringComparison.Ordinal) > -1;
}
else if (lambda != null)
{
func = l => lambda.Evaluate(new Arguments(l)).IsTrue;
}
using var stream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
using var reader = new StreamReader(stream);
string line;
var index = 0;
while ((line = reader.ReadLine()) != null)
{
if (func(line))
{
assistant.SetLoopParameters(line, index++);
block.Evaluate();
var signal = ParameterAssistant.Signal();
if (signal == ParameterAssistant.SignalType.Breaking)
{
break;
}
switch (signal)
{
case ParameterAssistant.SignalType.Continuing:
continue;
case ParameterAssistant.SignalType.ReturningNull:
return(null);
}
}
}
return(null);
}
return(null);
}
public Value For()
{
using var assistant = new ParameterAssistant(Arguments);
var block = assistant.Block();
if (block != null)
{
assistant.LoopParameters();
if (filter.IsEmpty())
{
using var reader = new StringReader(text);
string line;
var index = 0;
while ((line = reader.ReadLine()) != null)
{
assistant.SetLoopParameters(line, index++);
block.Evaluate();
var signal = ParameterAssistant.Signal();
if (signal == ParameterAssistant.SignalType.Breaking)
{
break;
}
switch (signal)
{
case ParameterAssistant.SignalType.ReturningNull:
return(null);
case ParameterAssistant.SignalType.Continuing:
continue;
}
}
}
else
{
using var reader = new StringReader(text);
string line;
var index = 0;
while ((line = reader.ReadLine()) != null)
{
if (line.IndexOf(filter, StringComparison.Ordinal) > -1)
{
assistant.SetLoopParameters(line, index++);
block.Evaluate();
var signal = ParameterAssistant.Signal();
if (signal == ParameterAssistant.SignalType.Breaking)
{
break;
}
switch (signal)
{
case ParameterAssistant.SignalType.ReturningNull:
return(null);
case ParameterAssistant.SignalType.Continuing:
continue;
}
}
}
}
return(null);
}
return(null);
}