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Add a MU_TRANSLATE_ENUM to define translations between related but different enums #33

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mattdurak opened this issue Oct 16, 2019 · 0 comments

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@mattdurak
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mattdurak commented Oct 16, 2019

for example,

#define MODULE_A_STATUS_VALUES \
    MODULE_A_OK, \
    MODULE_A_FAILED, \
    MODULE_A_SPECIFIC_FAILURE

MU_DEFINE_ENUM(MODULE_A_STATUS, MODULE_A_STATUS_VALUES);

#define MODULE_B_STATUS_VALUES \
    MODULE_B_FAILED, \
    MODULE_B_OK, \
    MODULE_B_CANCELED

MU_DEFINE_ENUM(MODULE_B_STATUS, MODULE_B_STATUS_VALUES);

May want to translate between MODULE_A_STATUS and MODULE_B_STATUS

// generates MODULE_A_STATUS_translate_to_MODULE_B_STATUS
MU_DEFINE_ENUM_TRANSLATION(
    MODULE_A_STATUS /*from*/, MODULE_B_STATUS /*to*/, MODULE_B_FAILED /*default for unknown values*/,
    MODULE_A_OK, MODULE_B_OK,
    MODULE_A_FAILED, MODULE_B_FAILED,
    MODULE_A_SPECIFIC_FAILURE, MODULE_B_FAILED);

MODULE_B_STATUS do_module_a_work(void)
{
    MODULE_A_STATUS result = foo();
    MODULE_B_STATUS converted = MODULE_A_STATUS_translate_to_MODULE_B_STATUS(result);
    return converted;
}
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