/* op.h
*
- * Copyright (c) 1991-1994, 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.
*/
typedef U32 PADOFFSET;
+#define NOT_IN_PAD ((PADOFFSET) -1)
#ifdef DEBUGGING_OPS
#define OPCODE opcode
#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; \
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 : dowantarray())
+#define GIMME_V OP_GIMME(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.) */
/* On UNOPs, saw bare parens, e.g. eof(). */
/* 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 1
+#define OPf_KNOW 2
+#define GIMME \
+ (op->op_flags & OPf_KNOW ? op->op_flags & OPf_LIST : dowantarray())
/* Private for lvalues */
#define OPpLVAL_INTRO 128 /* Lvalue must be localized */
/* 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_COUNTONLY 8
#define OPpTRANS_SQUASH 16
#define OPpTRANS_DELETE 32
#define OPpTRANS_COMPLEMENT 64
#define OPpREPEAT_DOLIST 64 /* List replication. */
/* Private for OP_ENTERSUB, OP_RV2?V, OP_?ELEM */
- /* (lower bits carry hints) */
-#define OPpENTERSUB_AMPER 8 /* Used & form to call. */
+#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 OPpDEREF_AV 32 /* Want ref to AV. */
-#define OPpDEREF_HV 64 /* Want ref to HV. */
+#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_ENTERED 16 /* Has been entered as symbol. */
/* Private for OP_LIST */
#define OPpLIST_GUESSED 64 /* Guessed that pushmark was needed. */
-/* Private for OP_LEAVE and friends */
-#define OPpLEAVE_VOID 64 /* No need to copy out values. */
+/* 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
};
OP * op_pmreplstart;
PMOP * op_pmnext; /* list of all scanpats */
REGEXP * op_pmregexp; /* compiled expression */
- SV * op_pmshort; /* for a fast bypass of execute() */
U16 op_pmflags;
U16 op_pmpermflags;
- char op_pmslen;
+ U8 op_pmdynflags;
};
-#define PMf_USED 0x0001 /* pm has been used once already */
+#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_SCANFIRST 0x0004 /* initial constant not anchored */
-#define PMf_ALL 0x0008 /* initial constant is whole pat */
+#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_FOLD 0x0020 /* case insensitivity */
+#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_RUNTIME 0x0200 /* pattern coming in on the stack */
+#define PMf_CONTINUE 0x0200 /* don't reset pos() if //g fails */
#define PMf_EVAL 0x0400 /* evaluating replacement as expr */
-#define PMf_WHITE 0x0800 /* pattern is \s+ */
+#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_LOCALE 0x4000 /* use locale for character types */
+#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
SV * op_sv;
#define cCOP ((COP*)op)
#define cLOOP ((LOOP*)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)
#define kLISTOP ((LISTOP*)kid)
#define OA_DANGEROUS 64
#define OA_DEFGV 128
-#define OASHIFT 8
+/* 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 opargs */
#define OA_SCALAR 1
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