public ReplWindow()
{
this.Width = 450;
this.Height = 350;
this.Title = "YACQ Console";
this.Content = this.textBox;
this.textBox.AcceptsReturn = true;
this.textBox.BorderThickness = new Thickness(0);
this.textBox.FontFamily = new FontFamily("Consolas");
this.textBox.HorizontalScrollBarVisibility = ScrollBarVisibility.Disabled;
this.textBox.VerticalScrollBarVisibility = ScrollBarVisibility.Visible;
this.textBox.TextWrapping = TextWrapping.Wrap;
this.textBox.Text = string.Format("YACQ {0} on Krile {1}\r\n", YacqServices.Version, typeof(App).Assembly.GetName().Version);
this.textBox.Select(this.textBox.Text.Length, 0);
this.textBox.PreviewKeyDown += this.textBox_PreviewKeyDown;
this.symbolTable = new SymbolTable(YacqFilter.FilterSymbols, typeof(Symbols))
{
{ "*textbox*", YacqExpression.Constant(textBox) },
};
var rcPath = Path.Combine(
Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location),
"yacq_lib\\rc.yacq"
);
if (File.Exists(rcPath))
{
YacqServices.ParseAll(this.symbolTable, File.ReadAllText(rcPath))
.ForEach(e => YacqExpression.Lambda(e).Compile().DynamicInvoke());
this.textBox.AppendText("rc.yacq was loaded.\r\n");
}
this.textBox.AppendText(">>> ");
}
private void textBox_PreviewKeyDown(object sender, KeyEventArgs e)
{
switch (e.Key)
{
case Key.Up:
var previous = this.historyPos != null
? this.historyPos.Previous
: this.history.Last;
if (previous != null)
{
var lines = this.textBox.Text.Split('\n');
lines[lines.Length - 1] = ">>> " + previous.Value;
this.textBox.Text = string.Join("\n", lines);
this.textBox.Select(this.textBox.Text.Length, 0);
this.historyPos = previous;
}
e.Handled = true;
break;
case Key.Down:
if (this.historyPos != null && this.historyPos.Next != null)
{
this.historyPos = this.historyPos.Next;
var lines = this.textBox.Text.Split('\n');
lines[lines.Length - 1] = ">>> " + this.historyPos.Value;
this.textBox.Text = string.Join("\n", lines);
this.textBox.Select(this.textBox.Text.Length, 0);
}
e.Handled = true;
break;
case Key.Left:
case Key.Back:
e.Handled = this.textBox.SelectionStart <=
(this.textBox.Text
.Split('\n')
.Select(s => s.Length + 1)
.Reverse()
.Skip(1)
.Sum()
+ ">>> ".Length);
break;
case Key.Enter:
var code = this.textBox.Text.Split('\n').Last().Substring(">>> ".Length);
if (!string.IsNullOrWhiteSpace(code))
{
this.history.AddLast(code);
if (this.historyPos != null && this.historyPos.Value != code)
{
this.historyPos = null;
}
this.textBox.AppendText("\r\n");
try
{
var exp = YacqExpression.Lambda(
YacqServices.Parse(this.symbolTable, code)
);
var ret = exp.Compile().DynamicInvoke();
if (ret == null)
{
this.textBox.AppendText("null");
}
else if (ret is IEnumerable && !(ret is String))
{
var sb = new StringBuilder("[ ");
var data = ((IEnumerable)ret)
.Cast <Object>()
.Select(_ => (_ ?? "(null)").ToString())
.Take(Symbols.ReplDumpLimit + 1)
.ToArray();
if (data.Any(s => s.Length > 40))
{
sb.Append("\n");
sb.Append(String.Join(
"\n",
data.Take(Symbols.ReplDumpLimit)
.Select(s => " " + s)
));
sb.Append(data.Length > Symbols.ReplDumpLimit
? " (more...)\n]"
: "\n]"
);
}
else
{
sb.Append(String.Join(" ", data.Take(Symbols.ReplDumpLimit)));
sb.Append(data.Length > Symbols.ReplDumpLimit
? " (more...) ]"
: " ]"
);
}
this.textBox.AppendText(sb.ToString());
}
else
{
this.textBox.AppendText(ret.ToString());
}
}
catch (Exception ex)
{
this.textBox.AppendText(ex.GetType().Name + ":" + ex);
}
}
this.textBox.AppendText("\r\n>>> ");
this.textBox.Select(this.textBox.Text.Length, 0);
e.Handled = true;
break;
default:
if (
e.KeyboardDevice.Modifiers == ModifierKeys.None ||
e.KeyboardDevice.Modifiers == ModifierKeys.Shift ||
e.KeyboardDevice.Modifiers == ModifierKeys.Control &&
(e.Key == Key.V || e.Key == Key.X || e.Key == Key.Back || e.Key == Key.Delete)
)
{
var inputStartPos = this.textBox.Text
.Split('\n')
.Select(s => s.Length + 1)
.Reverse()
.Skip(1)
.Sum()
+ ">>> ".Length;
if (this.textBox.SelectionStart < inputStartPos)
{
this.textBox.Select(this.textBox.Text.Length, 0);
}
}
break;
}
}