#define M_C2I(a, ...)       a ## __VA_ARGS__#define M_C(a, ...)         M_C2I(a, __VA_ARGS__)#define M_C3I(a, b, ...)    a ## b ## __VA_ARGS__#define M_C3(a, b, ...)     M_C3I(a ,b, __VA_ARGS__) #define M_RETI_ARG2(a, b, ...)  b#define M_RET_ARG2(...)         M_RETI_ARG2(__VA_ARGS__)#define M_RETI_ARG27(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,aa, ...)    aa#define M_RET_ARG27(...)        M_RETI_ARG27(__VA_ARGS__) #define M_TOBOOLI_0                 1, 0,#define M_BOOL(x)                   M_RET_ARG2(M_C(M_TOBOOLI_, x), 1, useless) #define M_IFI_0(true_macro, ...)    __VA_ARGS__#define M_IFI_1(true_macro, ...)    true_macro#define M_IF(c)                     M_C(M_IFI_, M_BOOL(c)) #define M_FLAT(...)                 __VA_ARGS__#define M_INVI_0                    1#define M_INVI_1                    0#define M_INV(x)                    M_C(M_INVI_, x) #define M_ANDI_00                   0#define M_ANDI_01                   0#define M_ANDI_10                   0#define M_ANDI_11                   1#define M_AND(x,y)                  M_C3(M_ANDI_, x, y) #define M_ORI_00                    0#define M_ORI_01                    1#define M_ORI_10                    1#define M_ORI_11                    1#define M_OR(x,y)                   M_C3(M_ORI_, x, y) #define M_COMMA_P(...)              M_RET_ARG27(__VA_ARGS__, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, useless) #define M_EMPTYI_DETECT(...)        0, 1,#define M_EMPTYI_P_C1(...)          M_COMMA_P(M_EMPTYI_DETECT __VA_ARGS__ ())#define M_EMPTYI_P_C2(...)          M_COMMA_P(M_EMPTYI_DETECT __VA_ARGS__)#define M_EMPTYI_P_C3(...)          M_COMMA_P(__VA_ARGS__ () )#define M_EMPTY_P(...)              M_AND(M_EMPTYI_P_C1(__VA_ARGS__), M_INV(M_OR(M_OR(M_EMPTYI_P_C2(__VA_ARGS__), M_COMMA_P(__VA_ARGS__)),M_EMPTYI_P_C3(__VA_ARGS__))))#define M_APPLY_FUNC2B(func, arg1, arg2)        \  M_IF(M_EMPTY_P(arg2))(,func(arg1, arg2))#define M_MAP2B_0(func, data, a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z,...) \  M_APPLY_FUNC2B(func, data, a) M_APPLY_FUNC2B(func, data, b) M_APPLY_FUNC2B(func, data, c) \  M_APPLY_FUNC2B(func, data, d) M_APPLY_FUNC2B(func, data, e) M_APPLY_FUNC2B(func, data, f) \  M_APPLY_FUNC2B(func, data, g) M_APPLY_FUNC2B(func, data, h) M_APPLY_FUNC2B(func, data, i) \  M_APPLY_FUNC2B(func, data, j) M_APPLY_FUNC2B(func, data, k) M_APPLY_FUNC2B(func, data, l) \  M_APPLY_FUNC2B(func, data, m) M_APPLY_FUNC2B(func, data, n) M_APPLY_FUNC2B(func, data, o) \  M_APPLY_FUNC2B(func, data, p) M_APPLY_FUNC2B(func, data, q) M_APPLY_FUNC2B(func, data, r) \  M_APPLY_FUNC2B(func, data, s) M_APPLY_FUNC2B(func, data, t) M_APPLY_FUNC2B(func, data, u) \  M_APPLY_FUNC2B(func, data, v) M_APPLY_FUNC2B(func, data, w) M_APPLY_FUNC2B(func, data, x) \  M_APPLY_FUNC2B(func, data, y) M_APPLY_FUNC2B(func, data, z)#define M_MAP2B(f, ...) M_MAP2B_0(f, __VA_ARGS__, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , )#define M_INIT_INIT(a)           ,a, #define M_GET_METHOD(method, method_default, ...)                       \  M_RET_ARG2 (M_MAP2B(M_C, M_C3(M_, method, _), __VA_ARGS__), method_default,) #define M_TEST_METHOD_P(method, oplist)                         \  M_BOOL(M_GET_METHOD (method, 0, M_FLAT oplist)) #define TRUE 1#define TEST1(n)                                \  M_IF(n)(ok,nok)#define TEST2(op)                               \  M_TEST_METHOD_P(INIT, op)#define TEST3(op)                               \  M_IF(M_TEST_METHOD_P(INIT, op))(ok, nok)#define TEST4(op) \  TEST1(TEST2(op))#define KO(a) ((void)1) /* This checks that the various expansions that ultimately lead to   something like 'KO(arg,arg)', where 'KO' comes from a macro   expansion reducing from a large macro chain do not are regarded   as funclike macro invocation of KO.  E.g. X93 and X94 expand to 'KO',   but X95 must not consume the (a,b) arguments outside the M_IF()   invocation to reduce the 'KO' macro to an invocation.  Instead   X95 should reduce via M_IF(KO)(a,b) to 'a'.       The other lines here are variations on this scheme, with X1 to   X6 coming from the bug report at   http://lists.nongnu.org/archive/html/tinycc-devel/2017-07/msg00017.html */X92 M_IF(KO)X93 M_GET_METHOD(INIT, 0, INIT(KO))X94 M_GET_METHOD(INIT, 0, M_FLAT (INIT(KO)))X95 M_IF(M_GET_METHOD(INIT, 0, INIT(KO)))(a,b)X96 M_IF(M_GET_METHOD(INIT, 0, M_FLAT (INIT(KO))))X97 M_IF(M_GET_METHOD(INIT, 0, M_FLAT (INIT(KO))))(ok,nok)X98 (M_TEST_METHOD_P(INIT, (INIT(KO))))(ok, nok)X99 M_IF(M_TEST_METHOD_P(INIT, (INIT(KO))))(ok, nok)// test beginsX1 TEST1(TRUE)          // ==> expect ok, get ok// First test with a token which is not a macroX2 TEST2((INIT(ok)))    // ==> expect 1, get 1X3 TEST3((INIT(ok)))    // ==> expect ok, get ok// Then test with a token which is a macro, but should not be expanded.X4 TEST2((INIT(KO)))    // ==> expect 1, get 1X5 TEST4(INIT(KO))X6 TEST3((INIT(KO)))    // ==> expect ok, get "error: macro 'KO' used with too many args"