public override void ExitStmtBlock([NotNull] PigeonParser.StmtBlockContext context)
{
if (ShouldCreateScope(context))
{
scope = scope.Parent;
}
}
public override void EnterStmtBlock([NotNull] PigeonParser.StmtBlockContext context)
{
if (ShouldCreateScope(context))
{
scope = new Scope(scope);
}
}
public override object VisitStmtBlock([NotNull] PigeonParser.StmtBlockContext context)
{
if (ShouldCreateScope(context))
{
functionScopes.Peek().EnterScope();
}
try
{
foreach (var statement in context.stmt())
{
var r = Visit(statement);
if (statement is PigeonParser.ContinueStatementContext)
{
throw new ContinueLoopException();
}
if (statement is PigeonParser.BreakStatementContext)
{
throw new BreakLoopException();
}
if (statement is PigeonParser.ReturnStatementContext)
{
throw new FuncReturnValueException(r);
}
}
}
finally
{
if (ShouldCreateScope(context))
{
functionScopes.Peek().ExitScope();
}
}
return(null);
}
private bool ShouldCreateScope(PigeonParser.StmtBlockContext context)
{
if (
context.Parent is PigeonParser.FunctionDeclContext ||
context.Parent is PigeonParser.ForStatementContext
)
{
return(false);
}
return(true);
}
