X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=op.h;h=31f018d6e44b352d75c02bd2aa3fd58b34054221;hb=3836fe67c982a853016f3715017e513c5664fac3;hp=b988f31d63878cfcc033dcc94732d9b261f563e3;hpb=85e6fe838fb25b257a1b363debf8691c0992ef71;p=p5sagit%2Fp5-mst-13.2.git diff --git a/op.h b/op.h index b988f31..31f018d 100644 --- a/op.h +++ b/op.h @@ -1,11 +1,10 @@ -/* $RCSfile: arg.h,v $$Revision: 4.1 $$Date: 92/08/07 17:18:16 $ +/* op.h * - * Copyright (c) 1991, Larry Wall + * Copyright (c) 1991-1997, Larry Wall * * You may distribute under the terms of either the GNU General Public * License or the Artistic License, as specified in the README file. * - * $Log: arg.h,v $ */ /* @@ -24,71 +23,131 @@ * which may or may not check number of children). */ -typedef U16 PADOFFSET; +typedef U32 PADOFFSET; +#define NOT_IN_PAD ((PADOFFSET) -1) -#ifdef DEBUGGING +#ifdef DEBUGGING_OPS #define OPCODE opcode #else #define OPCODE U16 #endif +#ifdef BASEOP_DEFINITION +#define BASEOP BASEOP_DEFINITION +#else #define BASEOP \ OP* op_next; \ OP* op_sibling; \ - OP* (*op_ppaddr)(); \ + OP* (CPERLscope(*op_ppaddr))_((ARGSproto)); \ PADOFFSET op_targ; \ OPCODE op_type; \ U16 op_seq; \ - char op_flags; \ - char op_private; + U8 op_flags; \ + U8 op_private; +#endif + +#define OP_GIMME(op,dfl) \ + (((op)->op_flags & OPf_WANT) == OPf_WANT_VOID ? G_VOID : \ + ((op)->op_flags & OPf_WANT) == OPf_WANT_SCALAR ? G_SCALAR : \ + ((op)->op_flags & OPf_WANT) == OPf_WANT_LIST ? G_ARRAY : \ + dfl) -#define GIMME (op->op_flags & OPf_KNOW ? op->op_flags & OPf_LIST : cxstack[cxstack_ix].blk_gimme) +#define GIMME_V OP_GIMME(PL_op, block_gimme()) /* Public flags */ -#define OPf_LIST 1 /* Do operator in list context. */ -#define OPf_KNOW 2 /* Context is known. */ + +#define OPf_WANT 3 /* Mask for "want" bits: */ +#define OPf_WANT_VOID 1 /* Want nothing */ +#define OPf_WANT_SCALAR 2 /* Want single value */ +#define OPf_WANT_LIST 3 /* Want list of any length */ #define OPf_KIDS 4 /* There is a firstborn child. */ #define OPf_PARENS 8 /* This operator was parenthesized. */ /* (Or block needs explicit scope entry.) */ -#define OPf_STACKED 16 /* Some arg is arriving on the stack. */ -#define OPf_LVAL 32 /* Certified reference (lvalue). */ -#define OPf_INTRO 64 /* Lvalue must be localized */ +#define OPf_REF 16 /* Certified reference. */ + /* (Return container, not containee). */ +#define OPf_MOD 32 /* Will modify (lvalue). */ +#define OPf_STACKED 64 /* Some arg is arriving on the stack. */ #define OPf_SPECIAL 128 /* Do something weird for this op: */ /* On local LVAL, don't init local value. */ /* On OP_SORT, subroutine is inlined. */ /* On OP_NOT, inversion was implicit. */ - /* On file tests, we fstat filehandle */ + /* On OP_LEAVE, don't restore curpm. */ /* On truncate, we truncate filehandle */ /* On control verbs, we saw no label */ /* On flipflop, we saw ... instead of .. */ /* On UNOPs, saw bare parens, e.g. eof(). */ - /* On OP_ENTERSUBR || OP_NULL, saw a "do". */ + /* On OP_ENTERSUB || OP_NULL, saw a "do". */ + /* On OP_(ENTER|LEAVE)EVAL, don't clear $@ */ + /* On OP_ENTERITER, loop var is per-thread */ + +/* old names; don't use in new code, but don't break them, either */ +#define OPf_LIST OPf_WANT_LIST +#define OPf_KNOW OPf_WANT +#define GIMME \ + (PL_op->op_flags & OPf_WANT \ + ? ((PL_op->op_flags & OPf_WANT) == OPf_WANT_LIST \ + ? G_ARRAY \ + : G_SCALAR) \ + : dowantarray()) + +/* Private for lvalues */ +#define OPpLVAL_INTRO 128 /* Lvalue must be localized */ -/* Private for OP_ASSIGN */ -#define OPpASSIGN_COMMON 1 /* Left & right have syms in common. */ +/* Private for OP_AASSIGN */ +#define OPpASSIGN_COMMON 64 /* Left & right have syms in common. */ + +/* Private for OP_SASSIGN */ +#define OPpASSIGN_BACKWARDS 64 /* Left & right switched. */ + +/* Private for OP_MATCH and OP_SUBST{,CONST} */ +#define OPpRUNTIME 64 /* Pattern coming in on the stack */ /* Private for OP_TRANS */ -#define OPpTRANS_SQUASH 1 -#define OPpTRANS_DELETE 2 -#define OPpTRANS_COMPLEMENT 4 +#define OPpTRANS_FROM_UTF 1 +#define OPpTRANS_TO_UTF 2 +#define OPpTRANS_IDENTICAL 4 + /* When CU or UC, means straight latin-1 to utf-8 or vice versa */ + /* Otherwise, IDENTICAL means the right side is the same as the left */ +#define OPpTRANS_SQUASH 8 +#define OPpTRANS_DELETE 16 +#define OPpTRANS_COMPLEMENT 32 +#define OPpTRANS_GROWS 64 /* Private for OP_REPEAT */ -#define OPpREPEAT_DOLIST 1 /* List replication. */ +#define OPpREPEAT_DOLIST 64 /* List replication. */ -/* Private for OP_ENTERSUBR, OP_RV2?V, OP_?ELEM */ - /* (lower bits carry hints) */ -#define OPpDEREF_DB 32 /* Debug subroutine. */ -#define OPpDEREF_AV 64 /* Want ref to AV. */ -#define OPpDEREF_HV 128 /* Want ref to HV. */ +/* Private for OP_ENTERSUB, OP_RV2?V, OP_?ELEM */ +#define OPpDEREF (32|64) /* Want ref to something: */ +#define OPpDEREF_AV 32 /* Want ref to AV. */ +#define OPpDEREF_HV 64 /* Want ref to HV. */ +#define OPpDEREF_SV (32|64) /* Want ref to SV. */ + /* OP_ENTERSUB only */ +#define OPpENTERSUB_DB 16 /* Debug subroutine. */ +#define OPpENTERSUB_AMPER 8 /* Used & form to call. */ + /* OP_?ELEM only */ +#define OPpLVAL_DEFER 16 /* Defer creation of array/hash elem */ + /* for OP_RV2?V, lower bits carry hints */ /* Private for OP_CONST */ -#define OPpCONST_BARE 1 /* Was a bare word (filehandle?). */ +#define OPpCONST_ENTERED 16 /* Has been entered as symbol. */ +#define OPpCONST_ARYBASE 32 /* Was a $[ translated to constant. */ +#define OPpCONST_BARE 64 /* Was a bare word (filehandle?). */ +#define OPpCONST_WARNING 128 /* Was a $^W translated to constant. */ /* Private for OP_FLIP/FLOP */ -#define OPpFLIP_LINENUM 1 /* Range arg potentially a line num. */ +#define OPpFLIP_LINENUM 64 /* Range arg potentially a line num. */ /* Private for OP_LIST */ -#define OPpLIST_GUESSED 1 /* Guessed that pushmark was needed. */ +#define OPpLIST_GUESSED 64 /* Guessed that pushmark was needed. */ + +/* Private for OP_DELETE */ +#define OPpSLICE 64 /* Operating on a list of keys */ + +/* Private for OP_SORT, OP_PRTF, OP_SPRINTF, string cmp'n, and case changers */ +#define OPpLOCALE 64 /* Use locale */ + +/* Private for OP_THREADSV */ +#define OPpDONE_SVREF 64 /* Been through newSVREF once */ struct op { BASEOP @@ -134,22 +193,33 @@ struct pmop { OP * op_pmreplstart; PMOP * op_pmnext; /* list of all scanpats */ REGEXP * op_pmregexp; /* compiled expression */ - SV * op_pmshort; /* for a fast bypass of execute() */ - short op_pmflags; - char op_pmslen; + U16 op_pmflags; + U16 op_pmpermflags; + U8 op_pmdynflags; }; -#define PMf_USED 1 /* pm has been used once already */ -#define PMf_ONCE 2 /* use pattern only once per reset */ -#define PMf_SCANFIRST 4 /* initial constant not anchored */ -#define PMf_ALL 8 /* initial constant is whole pat */ -#define PMf_SKIPWHITE 16 /* skip leading whitespace for split */ -#define PMf_FOLD 32 /* case insensitivity */ -#define PMf_CONST 64 /* subst replacement is constant */ -#define PMf_KEEP 128 /* keep 1st runtime pattern forever */ -#define PMf_GLOBAL 256 /* pattern had a g modifier */ -#define PMf_RUNTIME 512 /* pattern coming in on the stack */ -#define PMf_EVAL 1024 /* evaluating replacement as expr */ -#define PMf_WHITE 2048 /* pattern is \s+ */ + +#define PMdf_USED 0x01 /* pm has been used once already */ +#define PMdf_TAINTED 0x02 /* pm compiled from tainted pattern */ + +#define PMf_RETAINT 0x0001 /* taint $1 etc. if target tainted */ +#define PMf_ONCE 0x0002 /* use pattern only once per reset */ +#define PMf_REVERSED 0x0004 /* Should be matched right->left */ +#define PMf_MAYBE_CONST 0x0008 /* replacement contains variables */ +#define PMf_SKIPWHITE 0x0010 /* skip leading whitespace for split */ +#define PMf_WHITE 0x0020 /* pattern is \s+ */ +#define PMf_CONST 0x0040 /* subst replacement is constant */ +#define PMf_KEEP 0x0080 /* keep 1st runtime pattern forever */ +#define PMf_GLOBAL 0x0100 /* pattern had a g modifier */ +#define PMf_CONTINUE 0x0200 /* don't reset pos() if //g fails */ +#define PMf_EVAL 0x0400 /* evaluating replacement as expr */ +#define PMf_LOCALE 0x0800 /* use locale for character types */ +#define PMf_MULTILINE 0x1000 /* assume multiple lines */ +#define PMf_SINGLELINE 0x2000 /* assume single line */ +#define PMf_FOLD 0x4000 /* case insensitivity */ +#define PMf_EXTENDED 0x8000 /* chuck embedded whitespace */ + +/* mask of bits stored in regexp->reganch */ +#define PMf_COMPILETIME (PMf_MULTILINE|PMf_SINGLELINE|PMf_LOCALE|PMf_FOLD|PMf_EXTENDED) struct svop { BASEOP @@ -166,12 +236,6 @@ struct pvop { char * op_pv; }; -struct cvop { - BASEOP - CV * op_cv; - OP * op_cont; -}; - struct loop { BASEOP OP * op_first; @@ -182,18 +246,30 @@ struct loop { OP * op_lastop; }; -#define cUNOP ((UNOP*)op) -#define cBINOP ((BINOP*)op) -#define cLISTOP ((LISTOP*)op) -#define cLOGOP ((LOGOP*)op) -#define cCONDOP ((CONDOP*)op) -#define cPMOP ((PMOP*)op) -#define cSVOP ((SVOP*)op) -#define cGVOP ((GVOP*)op) -#define cPVOP ((PVOP*)op) -#define cCVOP ((CVOP*)op) -#define cCOP ((COP*)op) -#define cLOOP ((LOOP*)op) +#define cUNOP ((UNOP*)PL_op) +#define cBINOP ((BINOP*)PL_op) +#define cLISTOP ((LISTOP*)PL_op) +#define cLOGOP ((LOGOP*)PL_op) +#define cCONDOP ((CONDOP*)PL_op) +#define cPMOP ((PMOP*)PL_op) +#define cSVOP ((SVOP*)PL_op) +#define cGVOP ((GVOP*)PL_op) +#define cPVOP ((PVOP*)PL_op) +#define cCOP ((COP*)PL_op) +#define cLOOP ((LOOP*)PL_op) + +#define cUNOPo ((UNOP*)o) +#define cBINOPo ((BINOP*)o) +#define cLISTOPo ((LISTOP*)o) +#define cLOGOPo ((LOGOP*)o) +#define cCONDOPo ((CONDOP*)o) +#define cPMOPo ((PMOP*)o) +#define cSVOPo ((SVOP*)o) +#define cGVOPo ((GVOP*)o) +#define cPVOPo ((PVOP*)o) +#define cCVOPo ((CVOP*)o) +#define cCOPo ((COP*)o) +#define cLOOPo ((LOOP*)o) #define kUNOP ((UNOP*)kid) #define kBINOP ((BINOP*)kid) @@ -204,9 +280,49 @@ struct loop { #define kSVOP ((SVOP*)kid) #define kGVOP ((GVOP*)kid) #define kPVOP ((PVOP*)kid) -#define kCVOP ((CVOP*)kid) #define kCOP ((COP*)kid) #define kLOOP ((LOOP*)kid) #define Nullop Null(OP*) +/* Lowest byte of PL_opargs */ +#define OA_MARK 1 +#define OA_FOLDCONST 2 +#define OA_RETSCALAR 4 +#define OA_TARGET 8 +#define OA_RETINTEGER 16 +#define OA_OTHERINT 32 +#define OA_DANGEROUS 64 +#define OA_DEFGV 128 + +/* The next 4 bits encode op class information */ +#define OA_CLASS_MASK (15 << 8) + +#define OA_BASEOP (0 << 8) +#define OA_UNOP (1 << 8) +#define OA_BINOP (2 << 8) +#define OA_LOGOP (3 << 8) +#define OA_CONDOP (4 << 8) +#define OA_LISTOP (5 << 8) +#define OA_PMOP (6 << 8) +#define OA_SVOP (7 << 8) +#define OA_GVOP (8 << 8) +#define OA_PVOP (9 << 8) +#define OA_LOOP (10 << 8) +#define OA_COP (11 << 8) +#define OA_BASEOP_OR_UNOP (12 << 8) +#define OA_FILESTATOP (13 << 8) +#define OA_LOOPEXOP (14 << 8) + +#define OASHIFT 12 + +/* Remaining nybbles of PL_opargs */ +#define OA_SCALAR 1 +#define OA_LIST 2 +#define OA_AVREF 3 +#define OA_HVREF 4 +#define OA_CVREF 5 +#define OA_FILEREF 6 +#define OA_SCALARREF 7 +#define OA_OPTIONAL 8 +