C++ (Cpp) ErrorHandlingVisitor Examples

Example #1

File: errorHandling.cpp Project: vasslitvinov/chapel

void lowerErrorHandling() {
  if (!fMinimalModules)
    INT_ASSERT(dtError->inTree());

  forv_Vec(FnSymbol, fn, gFnSymbols) {
    // Determine if compiler-generated fns should be marked 'throws'
    if (fn->hasFlag(FLAG_ON)) {
      if (canBlockThrow(fn->body))
        fn->throwsErrorInit();
    } else {
      // Otherwise, just check for error-handling errors.
      checkErrorHandling(fn);
    }
  }

  // Quit if fatal errors were encountered by checkErrorHandling above.
  USR_STOP();

  forv_Vec(FnSymbol, fn, gFnSymbols) {
    ArgSymbol*   outError = NULL;
    LabelSymbol* epilogue = NULL;

    if (fn->throwsError()) {
      SET_LINENO(fn);

      outError = new ArgSymbol(INTENT_REF, "error_out", dtError);
      fn->insertFormalAtTail(outError);

      epilogue = fn->getOrCreateEpilogueLabel();
      INT_ASSERT(epilogue); // throws requires an epilogue
    }

    ErrorHandlingVisitor visitor = ErrorHandlingVisitor(outError, epilogue);
    fn->accept(&visitor);
  }

Example #2

File: errorHandling.cpp Project: DawidvC/chapel

static void lowerErrorHandling(FnSymbol* fn)
{
  ArgSymbol*   outError = NULL;
  LabelSymbol* epilogue = NULL;

  if (fn->throwsError()) {
    SET_LINENO(fn);

    outError = addOutErrorArg(fn);
    epilogue = fn->getOrCreateEpilogueLabel();
    INT_ASSERT(epilogue); // throws requires an epilogue
  }

  ErrorHandlingVisitor visitor = ErrorHandlingVisitor(outError, epilogue);
  fn->accept(&visitor);
}