private void btn_syntax_Click(object sender, EventArgs e)
{
txt_result.Text = "";
syntaxAnalyzer = new Syntax(this.lexicalAnalyzer);
syntaxAnalyzer.start();
List <Error> syntaxErrors = syntaxAnalyzer.errorReporter();
string errorsText = "";
for (int i = 0; i < syntaxErrors.Count; i++)
{
errorsText += (i + 1).ToString() + " : error in " + syntaxErrors[i].analayzer + "\t" + "'" + syntaxErrors[i].word + "'" +
" " + syntaxErrors[i].description + "\n\n";
}
txt_result.Text = errorsText;
if (lexicalAnalyzer.errorReporter().Count == 0 && syntaxAnalyzer.errorReporter().Count == 0)
{
txt_result.Text += ">> no lexical error :) \n>> no syntax error :) \n>> code compiled successfully :) \n>> ";
}
else if (lexicalAnalyzer.errorReporter().Count == 0)
{
txt_result.Text += ">> no lexical error :) \n>> ";
}
else
{
txt_result.Text += ">> ";
}
}
private void btn_lexical_Click(object sender, EventArgs e)
{
txt_result.Text = "";
string input = txt_code.Text;
input = input.Replace("\t", "");
string tokensText = "";
lexicalAnalyzer = new Lexical(input);
string[] types = lexicalAnalyzer.getTypes();
string[] lexemes = lexicalAnalyzer.getLexemes();
List <Error> errors = lexicalAnalyzer.errorReporter();
for (int i = 0; i < types.Length; i++)
{
tokensText += lexemes[i] + "\t: " + types[i] + "\n";
}
string errorsText = "";
for (int i = 0; i < errors.Count; i++)
{
errorsText += (i + 1).ToString() + " : error in " + errors[i].analayzer + "\t" + "'" + errors[i].word + "'" +
" " + errors[i].description + "\n\n";
}
txt_tokens.Text = tokensText;
txt_result.Text = errorsText;
if (lexicalAnalyzer.errorReporter().Count == 0 && input.Length > 1)
{
txt_result.Text += ">> no lexical error :) \n>> ";
}
else
{
txt_result.Text += ">> ";
}
}
public void start()
{
if (lexicalAnalyzer.errorReporter().Count > 0)
{
return;
}
else
{
stmts();
pb.append("halt", "", "", "");
}
}
public Syntax(Lexical lexical)
{
lexicalAnalyzer = lexical;
if (lexicalAnalyzer.errorReporter().Count > 0)
{
Error error = new Error();
error.analayzer = "SyntaxAnalyzer";
error.word = "LexicalAnalyzerError";
error.description = "lexical analyzer reported error . first check lexical errors";
errors.Add(error);
}
else
{
LA = lexicalAnalyzer.nextToken();
}
}
