mock.h

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#pragma once
 
// JUSTIFY: No macro parens
//  - So we can take a single argument `args` that is bracketed.
// NOLINTBEGIN(bugprone-macro-parentheses)
 
#if defined ENABLE_MOCKING
    #define MOCK_REAL(name) __real_##name
    #define MOCK_SET(name) __mock_set_##name
    #define MOCK_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 MOCKABLE_DECLARE(ret, name, args)                                                      \
        typedef ret(*MOCK_TYPE(name)) args;                                                        \
        extern MOCK_TYPE(name) name;                                                               \
        void MOCK_SET(name)(MOCK_TYPE(name) func);                                                 \
        ret MOCK_REAL(name) args
 
    #define MOCKABLE_DEFINE(ret, name, args)                                                       \
        MOCK_TYPE(name) name = MOCK_REAL(name);                                                    \
        void MOCK_SET(name)(MOCK_TYPE(name) func) { name = func; }                                 \
        ret MOCK_REAL(name) args
#else
    #define MOCKABLE_DECLARE(ret, name, args) ret name args
    #define MOCKABLE_DEFINE(ret, name, args) ret name args
#endif

#define MOCKABLE(ret, name, args)                                                                  \
    MOCKABLE_DECLARE(ret, name, args);                                                             \
    MOCKABLE_DEFINE(ret, name, args)
 
// NOLINTEND(bugprone-macro-parentheses)