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Fix type mismatches in x2p's safe{alloc,realloc,free}.
[perl5.git] / op.h
CommitLineData
a0d0e21e 1/* op.h
79072805 2 *
a0d0e21e 3 * Copyright (c) 1991-1994, Larry Wall
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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 *
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8 */
9
10/*
11 * The fields of BASEOP are:
12 * op_next Pointer to next ppcode to execute after this one.
13 * (Top level pre-grafted op points to first op,
14 * but this is replaced when op is grafted in, when
15 * this op will point to the real next op, and the new
16 * parent takes over role of remembering starting op.)
17 * op_ppaddr Pointer to current ppcode's function.
18 * op_type The type of the operation.
19 * op_flags Flags common to all operations. See OPf_* below.
20 * op_private Flags peculiar to a particular operation (BUT,
21 * by default, set to the number of children until
22 * the operation is privatized by a check routine,
23 * which may or may not check number of children).
24 */
25
4633a7c4 26typedef U32 PADOFFSET;
79072805 27
4633a7c4 28#ifdef DEBUGGING_OPS
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29#define OPCODE opcode
30#else
31#define OPCODE U16
32#endif
33
34#define BASEOP \
35 OP* op_next; \
36 OP* op_sibling; \
37 OP* (*op_ppaddr)(); \
38 PADOFFSET op_targ; \
39 OPCODE op_type; \
40 U16 op_seq; \
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41 U8 op_flags; \
42 U8 op_private;
79072805 43
e50aee73 44#define GIMME (op->op_flags & OPf_KNOW ? op->op_flags & OPf_LIST : dowantarray())
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45
46/* Public flags */
47#define OPf_LIST 1 /* Do operator in list context. */
48#define OPf_KNOW 2 /* Context is known. */
49#define OPf_KIDS 4 /* There is a firstborn child. */
50#define OPf_PARENS 8 /* This operator was parenthesized. */
463ee0b2 51 /* (Or block needs explicit scope entry.) */
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52#define OPf_REF 16 /* Certified reference. */
53 /* (Return container, not containee). */
54#define OPf_MOD 32 /* Will modify (lvalue). */
55#define OPf_STACKED 64 /* Some arg is arriving on the stack. */
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56#define OPf_SPECIAL 128 /* Do something weird for this op: */
57 /* On local LVAL, don't init local value. */
58 /* On OP_SORT, subroutine is inlined. */
59 /* On OP_NOT, inversion was implicit. */
a0d0e21e 60 /* On OP_LEAVE, don't restore curpm. */
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61 /* On truncate, we truncate filehandle */
62 /* On control verbs, we saw no label */
63 /* On flipflop, we saw ... instead of .. */
64 /* On UNOPs, saw bare parens, e.g. eof(). */
a0d0e21e 65 /* On OP_ENTERSUB || OP_NULL, saw a "do". */
f2ec2afd 66 /* On OP_(ENTER|LEAVE)EVAL, don't clear $@ */
79072805 67
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68/* Private for lvalues */
69#define OPpLVAL_INTRO 128 /* Lvalue must be localized */
70
71/* Private for OP_AASSIGN */
72#define OPpASSIGN_COMMON 64 /* Left & right have syms in common. */
73
74/* Private for OP_SASSIGN */
75#define OPpASSIGN_BACKWARDS 64 /* Left & right switched. */
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76
77/* Private for OP_TRANS */
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78#define OPpTRANS_SQUASH 16
79#define OPpTRANS_DELETE 32
80#define OPpTRANS_COMPLEMENT 64
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81
82/* Private for OP_REPEAT */
a0d0e21e 83#define OPpREPEAT_DOLIST 64 /* List replication. */
79072805 84
a0d0e21e 85/* Private for OP_ENTERSUB, OP_RV2?V, OP_?ELEM */
85e6fe83 86 /* (lower bits carry hints) */
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87#define OPpENTERSUB_AMPER 8 /* Used & form to call. */
88#define OPpENTERSUB_DB 16 /* Debug subroutine. */
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89#define OPpDEREF_AV 32 /* Want ref to AV. */
90#define OPpDEREF_HV 64 /* Want ref to HV. */
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91
92/* Private for OP_CONST */
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93#define OPpCONST_ENTERED 16 /* Has been entered as symbol. */
94#define OPpCONST_ARYBASE 32 /* Was a $[ translated to constant. */
a0d0e21e 95#define OPpCONST_BARE 64 /* Was a bare word (filehandle?). */
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96
97/* Private for OP_FLIP/FLOP */
a0d0e21e 98#define OPpFLIP_LINENUM 64 /* Range arg potentially a line num. */
79072805 99
ed6116ce 100/* Private for OP_LIST */
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101#define OPpLIST_GUESSED 64 /* Guessed that pushmark was needed. */
102
103/* Private for OP_LEAVE and friends */
104#define OPpLEAVE_VOID 64 /* No need to copy out values. */
ed6116ce 105
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106struct op {
107 BASEOP
108};
109
110struct unop {
111 BASEOP
112 OP * op_first;
113};
114
115struct binop {
116 BASEOP
117 OP * op_first;
118 OP * op_last;
119};
120
121struct logop {
122 BASEOP
123 OP * op_first;
124 OP * op_other;
125};
126
127struct condop {
128 BASEOP
129 OP * op_first;
130 OP * op_true;
131 OP * op_false;
132};
133
134struct listop {
135 BASEOP
136 OP * op_first;
137 OP * op_last;
138 U32 op_children;
139};
140
141struct pmop {
142 BASEOP
143 OP * op_first;
144 OP * op_last;
145 U32 op_children;
146 OP * op_pmreplroot;
147 OP * op_pmreplstart;
148 PMOP * op_pmnext; /* list of all scanpats */
149 REGEXP * op_pmregexp; /* compiled expression */
150 SV * op_pmshort; /* for a fast bypass of execute() */
a0d0e21e 151 U16 op_pmflags;
4633a7c4 152 U16 op_pmpermflags;
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153 char op_pmslen;
154};
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155
156#define PMf_USED 0x0001 /* pm has been used once already */
157#define PMf_ONCE 0x0002 /* use pattern only once per reset */
158#define PMf_SCANFIRST 0x0004 /* initial constant not anchored */
159#define PMf_ALL 0x0008 /* initial constant is whole pat */
160#define PMf_SKIPWHITE 0x0010 /* skip leading whitespace for split */
161#define PMf_FOLD 0x0020 /* case insensitivity */
162#define PMf_CONST 0x0040 /* subst replacement is constant */
163#define PMf_KEEP 0x0080 /* keep 1st runtime pattern forever */
164#define PMf_GLOBAL 0x0100 /* pattern had a g modifier */
165#define PMf_RUNTIME 0x0200 /* pattern coming in on the stack */
166#define PMf_EVAL 0x0400 /* evaluating replacement as expr */
167#define PMf_WHITE 0x0800 /* pattern is \s+ */
168#define PMf_MULTILINE 0x1000 /* assume multiple lines */
169#define PMf_SINGLELINE 0x2000 /* assume single line */
170#define PMf_UNUSED 0x4000 /* (unused) */
171#define PMf_EXTENDED 0x8000 /* chuck embedded whitespace */
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172
173struct svop {
174 BASEOP
175 SV * op_sv;
176};
177
178struct gvop {
179 BASEOP
180 GV * op_gv;
181};
182
183struct pvop {
184 BASEOP
185 char * op_pv;
186};
187
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188struct loop {
189 BASEOP
190 OP * op_first;
191 OP * op_last;
192 U32 op_children;
193 OP * op_redoop;
194 OP * op_nextop;
195 OP * op_lastop;
196};
197
198#define cUNOP ((UNOP*)op)
199#define cBINOP ((BINOP*)op)
200#define cLISTOP ((LISTOP*)op)
201#define cLOGOP ((LOGOP*)op)
202#define cCONDOP ((CONDOP*)op)
203#define cPMOP ((PMOP*)op)
204#define cSVOP ((SVOP*)op)
205#define cGVOP ((GVOP*)op)
206#define cPVOP ((PVOP*)op)
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207#define cCOP ((COP*)op)
208#define cLOOP ((LOOP*)op)
209
210#define kUNOP ((UNOP*)kid)
211#define kBINOP ((BINOP*)kid)
212#define kLISTOP ((LISTOP*)kid)
213#define kLOGOP ((LOGOP*)kid)
214#define kCONDOP ((CONDOP*)kid)
215#define kPMOP ((PMOP*)kid)
216#define kSVOP ((SVOP*)kid)
217#define kGVOP ((GVOP*)kid)
218#define kPVOP ((PVOP*)kid)
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219#define kCOP ((COP*)kid)
220#define kLOOP ((LOOP*)kid)
221
222#define Nullop Null(OP*)
223
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224/* Lowest byte of opargs */
225#define OA_MARK 1
226#define OA_FOLDCONST 2
227#define OA_RETSCALAR 4
228#define OA_TARGET 8
229#define OA_RETINTEGER 16
230#define OA_OTHERINT 32
231#define OA_DANGEROUS 64
232#define OA_DEFGV 128
233
234#define OASHIFT 8
235
236/* Remaining nybbles of opargs */
237#define OA_SCALAR 1
238#define OA_LIST 2
239#define OA_AVREF 3
240#define OA_HVREF 4
241#define OA_CVREF 5
242#define OA_FILEREF 6
243#define OA_SCALARREF 7
244#define OA_OPTIONAL 8
245