TAGS="TODO:|FIXME:"
find "${PROJECT_DIR}/${PROJECT_NAME}" \( -name "*.swift" \) -print0 | xargs -0 egrep --with-filename --line-number --only-matching "($TAGS).*\$" | perl -p -e "s/($TAGS)/ warning: \$1/"

//You have to change the property `"${PROJECT_DIR}/${PROJECT_NAME}"` to conform with your project setup.
//To track OBJC files change the `\( -name "*.swift" \)` to `( -name "*.h" -or -name "*.m" -or -name "*.swift" \)`