/// <summary>
///
/// </summary>
/// <returns>true if parsing had no errors</returns>
public bool Parse()
{
if (AlreadyParsed)
{
return(ParsingWasSuccessfull);
}
//Sets default console if needed
console ??= new DefaultConsole();
var antlrInputStream = new AntlrInputStream(code);
var lexer = new CosmosLexer(antlrInputStream);
var tokens = new CommonTokenStream(lexer);
var parser = new Cosmos(tokens);
ErrorListener = new ErrorListener(console);
parser.RemoveErrorListeners();
parser.AddErrorListener(ErrorListener);
context = parser.programme();
var result = !ErrorListener.HadError;
AlreadyParsed = true;
ParsingWasSuccessfull = result;
return(result);
}
public override ExecutionContext VisitProgramme(Cosmos.ProgrammeContext context)
{
var result = new ExecutionContext {
Success = false
};
try
{
variableVisitor = new VariableVisitor(parser, executionConsole);
expressionVisitor = new ExpressionVisitor(variableVisitor, parser, random);
variableVisitor.ExpressionVisitor = expressionVisitor;
base.VisitProgramme(context);
result.Success = true;
}
catch (CosmosException e)
{
parser.ErrorListener.Error(e);
}
return(result);
}
/// <summary>
/// Visit a parse tree produced by <see cref="Cosmos.programme"/>.
/// <para>
/// The default implementation returns the result of calling <see cref="AbstractParseTreeVisitor{Result}.VisitChildren(IRuleNode)"/>
/// on <paramref name="context"/>.
/// </para>
/// </summary>
/// <param name="context">The parse tree.</param>
/// <return>The visitor result.</return>
public virtual Result VisitProgramme([NotNull] Cosmos.ProgrammeContext context)
{
return(VisitChildren(context));
}
/// <summary>
/// Exit a parse tree produced by <see cref="Cosmos.programme"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitProgramme([NotNull] Cosmos.ProgrammeContext context)
{
}
