//When a library is defined.
public override object VisitStat_library([NotNull] algoParser.Stat_libraryContext context)
{
//Check if a library with this name already exists.
if (Scopes.LibraryExists(context.IDENTIFIER().GetText()))
{
Error.Warning(context, "A library with the name '" + context.IDENTIFIER().GetText() + "' has already been loaded, so loading was ignored.");
}
//Switch the current scope out for a new "library" scope.
AlgoScopeCollection oldScope = Scopes;
Scopes = new AlgoScopeCollection();
//Evaluate the contents of the library.
foreach (var statement in context.statement())
{
VisitStatement(statement);
}
//Save the new scope, and switch back to the old one.
AlgoScopeCollection libScope = Scopes;
Scopes = oldScope;
//Add the library scope to the library list.
Scopes.AddLibrary(context.IDENTIFIER().GetText(), libScope);
return(null);
}
/// <summary>
/// Visit a parse tree produced by <see cref="algoParser.stat_library"/>.
/// <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 VisitStat_library([NotNull] algoParser.Stat_libraryContext context)
{
return(VisitChildren(context));
}
/// <summary>
/// Exit a parse tree produced by <see cref="algoParser.stat_library"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitStat_library([NotNull] algoParser.Stat_libraryContext context)
{
}
