diff options
Diffstat (limited to 'cop.h')
| -rw-r--r-- | cop.h | 66 |
1 files changed, 66 insertions, 0 deletions
@@ -541,6 +541,10 @@ struct context { #define CXt_BLOCK 5 #define CXt_FORMAT 6 +/* private flags for CXt_SUB and CXt_NULL */ +#define CXp_MULTICALL 0x00000400 /* part of a multicall (so don't + tear down context on exit). */ + /* private flags for CXt_EVAL */ #define CXp_REAL 0x00000100 /* truly eval'', not a lookalike */ #define CXp_TRYBLOCK 0x00000200 /* eval{}, not eval'' or similar */ @@ -555,6 +559,8 @@ struct context { #endif #define CxTYPE(c) ((c)->cx_type & CXTYPEMASK) +#define CxMULTICALL(c) (((c)->cx_type & CXp_MULTICALL) \ + == CXp_MULTICALL) #define CxREALEVAL(c) (((c)->cx_type & (CXt_EVAL|CXp_REAL)) \ == (CXt_EVAL|CXp_REAL)) #define CxTRYBLOCK(c) (((c)->cx_type & (CXt_EVAL|CXp_TRYBLOCK)) \ @@ -700,3 +706,63 @@ typedef struct stackinfo PERL_SI; #define IN_PERL_COMPILETIME (PL_curcop == &PL_compiling) #define IN_PERL_RUNTIME (PL_curcop != &PL_compiling) +/* +=head1 Multicall Functions + +=for apidoc Ams||dMULTICALL +Declare local variables for a multicall. See L<perlcall/Lightweight Callbacks>. + +=for apidoc Ams||PUSH_MULTICALL +Opening bracket for a lightweight callback. +See L<perlcall/Lightweight Callbacks>. + +=for apidoc Ams||MULTICALL +Make a lightweight callback. See L<perlcall/Lightweight Callbacks>. + +=for apidoc Ams||POP_MULTICALL +Closing bracket for a lightweight callback. +See L<perlcall/Lightweight Callbacks>. + +=cut +*/ + +#define dMULTICALL \ + SV **newsp; /* set by POPBLOCK */ \ + PERL_CONTEXT *cx; \ + CV *cv; \ + OP *multicall_cop; \ + bool multicall_oldcatch; \ + U8 hasargs = 0 /* used by PUSHSUB */ + +#define PUSH_MULTICALL \ + STMT_START { \ + AV* padlist = CvPADLIST(cv); \ + ENTER; \ + multicall_oldcatch = CATCH_GET; \ + SAVETMPS; SAVEVPTR(PL_op); \ + CATCH_SET(TRUE); \ + PUSHBLOCK(cx, CXt_SUB|CXp_MULTICALL, PL_stack_sp); \ + PUSHSUB(cx); \ + if (++CvDEPTH(cv) >= 2) { \ + PERL_STACK_OVERFLOW_CHECK(); \ + Perl_pad_push(aTHX_ padlist, CvDEPTH(cv)); \ + } \ + SAVECOMPPAD(); \ + PAD_SET_CUR_NOSAVE(padlist, CvDEPTH(cv)); \ + multicall_cop = CvSTART(cv); \ + } STMT_END + +#define MULTICALL \ + STMT_START { \ + PL_op = multicall_cop; \ + CALLRUNOPS(aTHX); \ + } STMT_END + +#define POP_MULTICALL \ + STMT_START { \ + LEAVESUB(cv); \ + CvDEPTH(cv)--; \ + POPBLOCK(cx,PL_curpm); \ + CATCH_SET(multicall_oldcatch); \ + LEAVE; \ + } STMT_END |