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Text File  |  2005-01-27  |  2KB  |  85 lines
  1. /*    cc_runtime.h
  2.  *
  3.  *    Copyright (C) 1999, 2000, 2001, by Larry Wall and others
  4.  *
  5.  *    You may distribute under the terms of either the GNU General Public
  6.  *    License or the Artistic License, as specified in the README file.
  7.  *
  8.  */
  9.  
  10. #define DOOP(ppname) PUTBACK; PL_op = ppname(aTHX); SPAGAIN
  11. #define CCPP(s)   OP * s(pTHX)
  12.  
  13. #define PP_LIST(g) do {            \
  14.     dMARK;                \
  15.     if (g != G_ARRAY) {        \
  16.         if (++MARK <= SP)        \
  17.         *MARK = *SP;        \
  18.         else            \
  19.         *MARK = &PL_sv_undef;    \
  20.         SP = MARK;            \
  21.     }                \
  22.    } while (0)
  23.  
  24. #define MAYBE_TAINT_SASSIGN_SRC(sv) \
  25.     if (PL_tainting && PL_tainted && (!SvGMAGICAL(left) || !SvSMAGICAL(left) || \
  26.         !((mg=mg_find(left, PERL_MAGIC_taint)) && mg->mg_len & 1)))\
  27.         TAINT_NOT
  28.  
  29. #define PP_PREINC(sv) do {    \
  30.     if (SvIOK(sv)) {    \
  31.             ++SvIVX(sv);    \
  32.         SvFLAGS(sv) &= ~(SVf_NOK|SVf_POK|SVp_NOK|SVp_POK); \
  33.     }            \
  34.     else            \
  35.         sv_inc(sv);        \
  36.     SvSETMAGIC(sv);        \
  37.     } while (0)
  38.  
  39. #define PP_UNSTACK do {        \
  40.     TAINT_NOT;        \
  41.     PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp;    \
  42.     FREETMPS;        \
  43.     oldsave = PL_scopestack[PL_scopestack_ix - 1]; \
  44.     LEAVE_SCOPE(oldsave);    \
  45.     SPAGAIN;        \
  46.     } while(0)
  47.  
  48. /* Anyone using eval "" deserves this mess */
  49. #define PP_EVAL(ppaddr, nxt) do {        \
  50.     dJMPENV;                \
  51.     int ret;                \
  52.     PUTBACK;                \
  53.     JMPENV_PUSH(ret);            \
  54.     switch (ret) {                \
  55.     case 0:                    \
  56.         PL_op = ppaddr(aTHX);        \
  57.         PL_retstack[PL_retstack_ix - 1] = Nullop;    \
  58.         if (PL_op != nxt) CALLRUNOPS();        \
  59.         JMPENV_POP;                \
  60.         break;                \
  61.     case 1: JMPENV_POP; JMPENV_JUMP(1);    \
  62.     case 2: JMPENV_POP; JMPENV_JUMP(2);    \
  63.     case 3:                    \
  64.         JMPENV_POP;                \
  65.         if (PL_restartop && PL_restartop != nxt)        \
  66.         JMPENV_JUMP(3);            \
  67.     }                    \
  68.     PL_op = nxt;                \
  69.     SPAGAIN;                \
  70.     } while (0)
  71.  
  72.  
  73. #define PP_ENTERTRY(jmpbuf,label)  \
  74.     STMT_START {                    \
  75.         int ret;        \
  76.         JMPENV_PUSH_ENV(jmpbuf,ret);            \
  77.         switch (ret) {                \
  78.             case 1: JMPENV_POP_ENV(jmpbuf); JMPENV_JUMP(1);\
  79.             case 2: JMPENV_POP_ENV(jmpbuf); JMPENV_JUMP(2);\
  80.             case 3: JMPENV_POP_ENV(jmpbuf); SPAGAIN; goto label;\
  81.         }                                       \
  82.     } STMT_END
  83. #define PP_LEAVETRY \
  84.     STMT_START{ PL_top_env=PL_top_env->je_prev; }STMT_END
  85.