cc_runtime.h

   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             /* XXX 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