private bool ColorisePi()
{
CheckFonts();
var rtb = piInput;
BeginUpdate(rtb);
var input = piInput.Text + " \n";
var lex = new PiLexer(input);
try
{
// start by setting everything to default color and font
SetPiSliceColor(new Slice(lex, 0, input.Length - 1), Color.Black, _defaultFont);
lex.Process();
foreach (var tok in lex.Tokens)
{
ColorisePiToken(tok, tok.Slice);
}
}
catch (Exception e)
{
output.Text = $"{e.Message}: {lex.Error}";
}
finally
{
EndUpdate(rtb);
}
return(true);
}
private void Parse(string text, bool verbose = false)
{
var lexer = new PiLexer(text);
Assert.IsTrue(lexer.Process());
if (verbose)
{
WriteLine(lexer.ToString());
}
if (lexer.Failed)
{
WriteLine(lexer.Error);
}
PiParser = new PiParser(lexer);
PiParser.Process(lexer, EStructure.None);
if (verbose)
{
WriteLine(PiParser.PrintTree());
}
if (PiParser.Failed)
{
Debug.WriteLine(PiParser.Error);
}
Assert.IsFalse(PiParser.Failed);
Assert.IsNotNull(PiParser.Root);
}
public void TestSimpleTokens()
{
var lexer = new PiLexer("1 2 3");
Assert.IsTrue(lexer.Process());
var parser = new PiParser(lexer);
Assert.IsTrue(parser.Process(lexer));
}
protected static PiLexer PiLex(string input)
{
var lex = new PiLexer(input);
if (lex.Failed)
{
WriteLine("LexerFailed: {0}", lex.Error);
}
Assert.IsTrue(lex.Process(), lex.Error);
return(lex);
}
private bool Pi()
{
var input = Current().Text;
var lexer = new PiLexer(input);
if (!lexer.Process())
{
return(FailLocation(lexer.Error));
}
var parser = new PiParser(lexer);
if (!parser.Process(lexer))
{
return(FailLocation(parser.Error));
}
var pi = NewNode(Consume());
pi.Value = parser.Root;
Push(pi);
return(true);
}