qmk_firmware/cmake/Utils.cmake

macro(json_get_with_default KEY_STR JSON_STR DEFAULT)
    # message(STATUS "Getting ${ARGN} for ${KEY_STR}")
    string(JSON ${KEY_STR} ERROR_VARIABLE JSON_ERROR GET ${JSON_STR} ${ARGN})
    if(NOT ${JSON_ERROR} STREQUAL "NOTFOUND")
        set(${KEY_STR} ${DEFAULT})
    endif()
endmacro()

macro(json_get KEY_STR JSON_STR)
    # message(STATUS "Getting ${ARGN} for ${KEY_STR}")
    string(JSON ${KEY_STR} ERROR_VARIABLE JSON_ERROR GET ${JSON_STR} ${ARGN})
    if(NOT ${JSON_ERROR} STREQUAL "NOTFOUND")
        unset(${KEY_STR})
    endif()
endmacro()

macro(parent_list ACTION LIST_STR)
    set(ARGS ${ARGN})
    string(REPLACE ";" " " ARGS ${ARGS})
    set(LOCAL_LIST ${${LIST_STR}})
    list(${ACTION} LOCAL_LIST ${ARGS})
    # set in current scope too
    set(${LIST_STR} ${LOCAL_LIST})
    set(${LIST_STR} ${LOCAL_LIST} PARENT_SCOPE)
endmacro()