Method ReplayItems

Source/cmForEachCommand.cxx:110–150

}

bool cmForEachFunctionBlocker::ReplayItems(
  std::vector<cmListFileFunction> const& functions,
  cmExecutionStatus& inStatus)
{
  assert("Unexpected number of iteration variables" &&
         this->IterationVarsCount == 1);

  auto& mf = inStatus.GetMakefile();

  // At end of for each execute recorded commands
  // store the old value
  cm::optional<std::string> oldDef;
  if (mf.GetPolicyStatus(cmPolicies::CMP0124) != cmPolicies::NEW) {
    oldDef = mf.GetSafeDefinition(this->Args.front());
  } else if (mf.IsNormalDefinitionSet(this->Args.front())) {
    oldDef = *mf.GetDefinition(this->Args.front());
  }

  auto restore = false;
  for (std::string const& arg : cmMakeRange(this->Args).advance(1)) {
    // Set the variable to the loop value
    mf.AddDefinition(this->Args.front(), arg);
    // Invoke all the functions that were collected in the block.
    auto r = this->invoke(functions, inStatus, mf);
    restore = r.Restore;
    if (r.Break) {
      break;
    }
  }

  if (restore) {
    if (oldDef) {
      // restore the variable to its prior value
      mf.AddDefinition(this->Args.front(), *oldDef);
    } else {
      mf.RemoveDefinition(this->Args.front());
    }
  }

  return true;
}

bool cmForEachFunctionBlocker::ReplayZipLists(
  std::vector<cmListFileFunction> const& functions,