-/* $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 $
*/
/*
* 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 : getgimme(op))
+#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_COUNTONLY 8
+#define OPpTRANS_SQUASH 16
+#define OPpTRANS_DELETE 32
+#define OPpTRANS_COMPLEMENT 64
/* Private for OP_REPEAT */
-#define OPpREPEAT_DOLIST 1 /* List replication. */
+#define OPpREPEAT_DOLIST 64 /* List replication. */
-/* Private for OP_SUBR */
-#define OPpSUBR_DB 1 /* Debug subroutine. */
+/* 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?). */
/* 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 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
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 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
char * op_pv;
};
-struct cvop {
- BASEOP
- CV * op_cv;
- OP * op_cont;
-};
-
struct loop {
BASEOP
OP * op_first;
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)
#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 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 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
+
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