mock.h

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#pragma once
 
#include <derive-c/core/namespace.h>
 
// JUSTIFY: No macro parens
//  - So we can take a single argument `args` that is bracketed.
// NOLINTBEGIN(bugprone-macro-parentheses)
 
#if defined ENABLE_MOCKING
    #define DC_MOCKABLE_REAL(name) __real_##name
    #define DC_MOCKABLE_SET(name) __mock_set_##name
    #define DC_MOCKABLE_TYPE(name) __type_##name
 
    // JUSTIFY: No Semicolon after
    //  - Users may want to add additional attributes to the declaration
    //    so we leave the termination of the real declaration to the user.
    #define DC_MOCKABLE_DECLARE(ret, name, args)                                                   \
        typedef ret(*DC_MOCKABLE_TYPE(name)) args;                                                 \
        extern DC_MOCKABLE_TYPE(name) name;                                                        \
        void DC_MOCKABLE_SET(name)(DC_MOCKABLE_TYPE(name) func);                                   \
        ret DC_MOCKABLE_REAL(name) args
 
    #define DC_MOCKABLE_DEFINE(ret, name, args)                                                    \
        DC_MOCKABLE_TYPE(name) name = DC_MOCKABLE_REAL(name);                                      \
        void DC_MOCKABLE_SET(name)(DC_MOCKABLE_TYPE(name) func) { name = func; }                   \
        ret DC_MOCKABLE_REAL(name) args
 
    #define DC_MOCKABLE_ENABLED(name) (name != DC_MOCKABLE_REAL(name))
#else
    #define DC_MOCKABLE_DECLARE(ret, name, args) DC_PUBLIC ret name args
    #define DC_MOCKABLE_DEFINE(ret, name, args) DC_PUBLIC ret name args
    #define DC_MOCKABLE_ENABLED(name) false
#endif

#define DC_MOCKABLE(ret, name, args)                                                               \
    DC_MOCKABLE_DECLARE(ret, name, args);                                                          \
    DC_MOCKABLE_DEFINE(ret, name, args)
 
// NOLINTEND(bugprone-macro-parentheses)