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Re: Namespace cleanup: Does SDBM need binary compatibility?
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a0d0e21e 1/* perly.y
a687059c 2 *
a0d0e21e 3 * Copyright (c) 1991-1994, Larry Wall
a687059c 4 *
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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.
8d063cd8 7 *
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8 */
9
10/*
11 * 'I see,' laughed Strider. 'I look foul and feel fair. Is that it?
12 * All that is gold does not glitter, not all those that wander are lost.'
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13 */
14
15%{
79072805 16#include "EXTERN.h"
8d063cd8 17#include "perl.h"
378cc40b 18
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19static void
20dep()
21{
22 deprecate("\"do\" to call subroutines");
23}
f0fcb552 24
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25%}
26
27%start prog
28
29%union {
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30 I32 ival;
31 char *pval;
32 OP *opval;
33 GV *gvval;
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34}
35
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36%token <ival> '{' ')'
37
a0d0e21e 38%token <opval> WORD METHOD FUNCMETH THING PMFUNC PRIVATEREF
4633a7c4 39%token <opval> FUNC0SUB UNIOPSUB LSTOPSUB
79072805 40%token <pval> LABEL
a0d0e21e 41%token <ival> FORMAT SUB ANONSUB PACKAGE USE
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42%token <ival> WHILE UNTIL IF UNLESS ELSE ELSIF CONTINUE FOR
43%token <ival> LOOPEX DOTDOT
44%token <ival> FUNC0 FUNC1 FUNC
45%token <ival> RELOP EQOP MULOP ADDOP
55497cff
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46%token <ival> DOLSHARP DO HASHBRACK NOAMP
47%token LOCAL MY
79072805 48
55497cff 49%type <ival> prog decl local format startsub remember mremember '&'
bbce6d69 50%type <opval> block mblock lineseq line loop cond else
a0d0e21e 51%type <opval> expr term scalar ary hsh arylen star amper sideff
bbce6d69 52%type <opval> argexpr nexpr texpr iexpr mexpr mnexpr mtexpr miexpr
a0d0e21e 53%type <opval> listexpr listexprcom indirob
55497cff 54%type <opval> listop method proto cont my_scalar
79072805 55%type <pval> label
79072805 56
a0d0e21e 57%left <ival> OROP
463ee0b2 58%left ANDOP
c07a80fd 59%right NOTOP
79072805 60%nonassoc <ival> LSTOP
8d063cd8 61%left ','
a0d0e21e 62%right <ival> ASSIGNOP
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63%right '?' ':'
64%nonassoc DOTDOT
65%left OROR
66%left ANDAND
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67%left <ival> BITOROP
68%left <ival> BITANDOP
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69%nonassoc EQOP
70%nonassoc RELOP
378cc40b 71%nonassoc <ival> UNIOP
79072805 72%left <ival> SHIFTOP
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73%left ADDOP
74%left MULOP
8990e307 75%left <ival> MATCHOP
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76%right '!' '~' UMINUS REFGEN
77%right <ival> POWOP
78%nonassoc PREINC PREDEC POSTINC POSTDEC
8990e307 79%left ARROW
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80%left '('
81
82%% /* RULES */
83
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84prog : /* NULL */
85 {
86#if defined(YYDEBUG) && defined(DEBUGGING)
87 yydebug = (debug & 1);
88#endif
8990e307 89 expect = XSTATE;
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90 }
91 /*CONTINUED*/ lineseq
a0d0e21e 92 { newPROG($2); }
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93 ;
94
a687059c 95block : '{' remember lineseq '}'
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96 { $$ = block_end($1,$2,$3); }
97 ;
98
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99remember: /* NULL */ /* start a full lexical scope */
100 { $$ = block_start(TRUE); }
101 ;
102
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103mblock : '{' mremember lineseq '}'
104 { $$ = block_end($1,$2,$3); }
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105 ;
106
107mremember: /* NULL */ /* start a partial lexical scope */
108 { $$ = block_start(FALSE); }
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109 ;
110
111lineseq : /* NULL */
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112 { $$ = Nullop; }
113 | lineseq decl
114 { $$ = $1; }
8d063cd8 115 | lineseq line
463ee0b2 116 { $$ = append_list(OP_LINESEQ,
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117 (LISTOP*)$1, (LISTOP*)$2);
118 pad_reset_pending = TRUE;
85e6fe83 119 if ($1 && $2) hints |= HINT_BLOCK_SCOPE; }
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120 ;
121
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122line : label cond
123 { $$ = newSTATEOP(0, $1, $2); }
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124 | loop /* loops add their own labels */
125 | label ';'
126 { if ($1 != Nullch) {
79072805 127 $$ = newSTATEOP(0, $1, newOP(OP_NULL, 0));
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128 }
129 else {
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130 $$ = Nullop;
131 copline = NOLINE;
32c2e4fb 132 }
8990e307 133 expect = XSTATE; }
8d063cd8 134 | label sideff ';'
79072805 135 { $$ = newSTATEOP(0, $1, $2);
8990e307 136 expect = XSTATE; }
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137 ;
138
a687059c 139sideff : error
79072805 140 { $$ = Nullop; }
a687059c 141 | expr
79072805 142 { $$ = $1; }
a687059c 143 | expr IF expr
79072805 144 { $$ = newLOGOP(OP_AND, 0, $3, $1); }
a687059c 145 | expr UNLESS expr
79072805 146 { $$ = newLOGOP(OP_OR, 0, $3, $1); }
a687059c 147 | expr WHILE expr
8990e307 148 { $$ = newLOOPOP(OPf_PARENS, 1, scalar($3), $1); }
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149 | expr UNTIL iexpr
150 { $$ = newLOOPOP(OPf_PARENS, 1, $3, $1);}
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151 ;
152
153else : /* NULL */
154 { $$ = Nullop; }
55497cff 155 | ELSE mblock
79072805 156 { $$ = scope($2); }
55497cff 157 | ELSIF '(' mexpr ')' mblock else
79072805 158 { copline = $1;
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159 $$ = newSTATEOP(0, Nullch,
160 newCONDOP(0, $3, scope($5), $6));
4633a7c4 161 hints |= HINT_BLOCK_SCOPE; }
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162 ;
163
55497cff 164cond : IF '(' remember mexpr ')' mblock else
79072805 165 { copline = $1;
55497cff 166 $$ = block_end($1, $3,
bbce6d69 167 newCONDOP(0, $4, scope($6), $7)); }
55497cff 168 | UNLESS '(' remember miexpr ')' mblock else
79072805 169 { copline = $1;
55497cff 170 $$ = block_end($1, $3,
bbce6d69 171 newCONDOP(0, $4, scope($6), $7)); }
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172 | IF block block else
173 { copline = $1;
a0d0e21e 174 deprecate("if BLOCK BLOCK");
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175 $$ = newCONDOP(0, scope($2), scope($3), $4); }
176 | UNLESS block block else
177 { copline = $1;
a0d0e21e 178 deprecate("unless BLOCK BLOCK");
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179 $$ = newCONDOP(0, invert(scalar(scope($2))),
180 scope($3), $4); }
181 ;
182
183cont : /* NULL */
184 { $$ = Nullop; }
185 | CONTINUE block
186 { $$ = scope($2); }
187 ;
188
55497cff 189loop : label WHILE '(' remember mtexpr ')' mblock cont
79072805 190 { copline = $2;
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191 $$ = block_end($2, $4,
192 newSTATEOP(0, $1,
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193 newWHILEOP(0, 1, (LOOP*)Nullop,
194 $5, $7, $8))); }
55497cff 195 | label UNTIL '(' remember miexpr ')' mblock cont
79072805 196 { copline = $2;
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197 $$ = block_end($2, $4,
198 newSTATEOP(0, $1,
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199 newWHILEOP(0, 1, (LOOP*)Nullop,
200 $5, $7, $8))); }
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201 | label WHILE block block cont
202 { copline = $2;
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203 $$ = newWHILEOP(0, 1, (LOOP*)Nullop,
204 scope($3), $4, $5); }
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205 | label UNTIL block block cont
206 { copline = $2;
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207 $$ = newWHILEOP(0, 1, (LOOP*)Nullop,
208 invert(scalar(scope($3))),
209 $4, $5); }
210 | label FOR MY remember my_scalar '(' mexpr ')' mblock cont
55497cff 211 { $$ = block_end($2, $4,
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212 newFOROP(0, $1, $2, $5, $7, $9, $10)); }
213 | label FOR scalar '(' remember mexpr ')' mblock cont
214 { $$ = block_end($2, $5,
215 newFOROP(0, $1, $2, mod($3, OP_ENTERLOOP),
216 $6, $8, $9)); }
217 | label FOR '(' remember mexpr ')' mblock cont
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218 { $$ = block_end($2, $4,
219 newFOROP(0, $1, $2, Nullop, $5, $7, $8)); }
bbce6d69 220 | label FOR '(' remember mnexpr ';' mtexpr ';' mnexpr ')' mblock
8d063cd8 221 /* basically fake up an initialize-while lineseq */
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222 { copline = $2;
223 $$ = block_end($2, $4,
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224 append_elem(OP_LINESEQ, scalar($5),
225 newSTATEOP(0, $1,
226 newWHILEOP(0, 1, (LOOP*)Nullop,
227 scalar($7),
228 $11, scalar($9))))); }
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229 | label block cont /* a block is a loop that happens once */
230 { $$ = newSTATEOP(0,
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231 $1, newWHILEOP(0, 1, (LOOP*)Nullop,
232 Nullop, $2, $3)); }
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233 ;
234
235nexpr : /* NULL */
79072805 236 { $$ = Nullop; }
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237 | sideff
238 ;
239
240texpr : /* NULL means true */
79072805 241 { (void)scan_num("1"); $$ = yylval.opval; }
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242 | expr
243 ;
244
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245iexpr : expr
246 { $$ = invert(scalar($1)); }
247 ;
248
249mexpr : expr
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250 { $$ = $1; intro_my(); }
251 ;
252
253mnexpr : nexpr
254 { $$ = $1; intro_my(); }
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255 ;
256
257mtexpr : texpr
bbce6d69 258 { $$ = $1; intro_my(); }
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259 ;
260
261miexpr : iexpr
bbce6d69 262 { $$ = $1; intro_my(); }
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263 ;
264
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265label : /* empty */
266 { $$ = Nullch; }
32c2e4fb 267 | LABEL
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268 ;
269
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270decl : format
271 { $$ = 0; }
272 | subrout
273 { $$ = 0; }
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274 | package
275 { $$ = 0; }
a0d0e21e 276 | use
85e6fe83 277 { $$ = 0; }
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278 ;
279
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280format : FORMAT startsub WORD block
281 { newFORM($2, $3, $4); }
282 | FORMAT startsub block
283 { newFORM($2, Nullop, $3); }
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284 ;
285
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286subrout : SUB startsub WORD proto block
287 { newSUB($2, $3, $4, $5); }
288 | SUB startsub WORD proto ';'
289 { newSUB($2, $3, $4, Nullop); expect = XSTATE; }
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290 ;
291
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292proto : /* NULL */
293 { $$ = Nullop; }
294 | THING
295 ;
296
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297startsub: /* NULL */ /* start a subroutine scope */
298 { $$ = start_subparse(); }
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299 ;
300
a687059c 301package : PACKAGE WORD ';'
79072805 302 { package($2); }
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303 | PACKAGE ';'
304 { package(Nullop); }
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305 ;
306
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307use : USE startsub WORD WORD listexpr ';'
308 { utilize($1, $2, $3, $4, $5); }
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309 ;
310
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311expr : expr ANDOP expr
312 { $$ = newLOGOP(OP_AND, 0, $1, $3); }
313 | expr OROP expr
314 { $$ = newLOGOP($2, 0, $1, $3); }
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315 | argexpr
316 ;
317
318argexpr : argexpr ','
319 { $$ = $1; }
320 | argexpr ',' term
79072805 321 { $$ = append_elem(OP_LIST, $1, $3); }
a0d0e21e 322 | term
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323 ;
324
a0d0e21e 325listop : LSTOP indirob argexpr
79072805 326 { $$ = convert($1, OPf_STACKED,
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327 prepend_elem(OP_LIST, newGVREF($1,$2), $3) ); }
328 | FUNC '(' indirob expr ')'
79072805 329 { $$ = convert($1, OPf_STACKED,
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330 prepend_elem(OP_LIST, newGVREF($1,$3), $4) ); }
331 | term ARROW method '(' listexprcom ')'
4633a7c4 332 { $$ = convert(OP_ENTERSUB, OPf_STACKED,
a0d0e21e 333 append_elem(OP_LIST,
55497cff 334 prepend_elem(OP_LIST, scalar($1), $5),
a0d0e21e 335 newUNOP(OP_METHOD, 0, $3))); }
79072805 336 | METHOD indirob listexpr
4633a7c4 337 { $$ = convert(OP_ENTERSUB, OPf_STACKED,
a0d0e21e 338 append_elem(OP_LIST,
4633a7c4 339 prepend_elem(OP_LIST, $2, $3),
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340 newUNOP(OP_METHOD, 0, $1))); }
341 | FUNCMETH indirob '(' listexprcom ')'
4633a7c4 342 { $$ = convert(OP_ENTERSUB, OPf_STACKED,
a0d0e21e 343 append_elem(OP_LIST,
4633a7c4 344 prepend_elem(OP_LIST, $2, $4),
a0d0e21e 345 newUNOP(OP_METHOD, 0, $1))); }
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346 | LSTOP listexpr
347 { $$ = convert($1, 0, $2); }
a0d0e21e 348 | FUNC '(' listexprcom ')'
79072805 349 { $$ = convert($1, 0, $3); }
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350 | LSTOPSUB startsub block listexpr %prec LSTOP
351 { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
352 append_elem(OP_LIST,
353 prepend_elem(OP_LIST, newANONSUB($2, 0, $3), $4),
354 $1)); }
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355 ;
356
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357method : METHOD
358 | scalar
359 ;
360
361term : term ASSIGNOP term
362 { $$ = newASSIGNOP(OPf_STACKED, $1, $2, $3); }
363 | term POWOP term
79072805 364 { $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
a0d0e21e 365 | term MULOP term
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366 { if ($2 != OP_REPEAT)
367 scalar($1);
368 $$ = newBINOP($2, 0, $1, scalar($3)); }
a0d0e21e 369 | term ADDOP term
79072805 370 { $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
a0d0e21e 371 | term SHIFTOP term
79072805 372 { $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
a0d0e21e 373 | term RELOP term
79072805 374 { $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
a0d0e21e 375 | term EQOP term
79072805 376 { $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
a0d0e21e 377 | term BITANDOP term
79072805 378 { $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
a0d0e21e 379 | term BITOROP term
79072805 380 { $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
a0d0e21e 381 | term DOTDOT term
79072805 382 { $$ = newRANGE($2, scalar($1), scalar($3));}
a0d0e21e 383 | term ANDAND term
463ee0b2 384 { $$ = newLOGOP(OP_AND, 0, $1, $3); }
a0d0e21e 385 | term OROR term
463ee0b2 386 { $$ = newLOGOP(OP_OR, 0, $1, $3); }
a0d0e21e 387 | term '?' term ':' term
79072805 388 { $$ = newCONDOP(0, $1, $3, $5); }
a0d0e21e 389 | term MATCHOP term
79072805 390 { $$ = bind_match($2, $1, $3); }
8d063cd8 391
a0d0e21e 392 | '-' term %prec UMINUS
79072805 393 { $$ = newUNOP(OP_NEGATE, 0, scalar($2)); }
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394 | '+' term %prec UMINUS
395 { $$ = $2; }
8d063cd8 396 | '!' term
79072805 397 { $$ = newUNOP(OP_NOT, 0, scalar($2)); }
8d063cd8 398 | '~' term
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399 { $$ = newUNOP(OP_COMPLEMENT, 0, scalar($2));}
400 | REFGEN term
a0d0e21e 401 { $$ = newUNOP(OP_REFGEN, 0, mod($2,OP_REFGEN)); }
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402 | term POSTINC
403 { $$ = newUNOP(OP_POSTINC, 0,
463ee0b2 404 mod(scalar($1), OP_POSTINC)); }
79072805
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405 | term POSTDEC
406 { $$ = newUNOP(OP_POSTDEC, 0,
463ee0b2 407 mod(scalar($1), OP_POSTDEC)); }
79072805
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408 | PREINC term
409 { $$ = newUNOP(OP_PREINC, 0,
463ee0b2 410 mod(scalar($2), OP_PREINC)); }
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411 | PREDEC term
412 { $$ = newUNOP(OP_PREDEC, 0,
463ee0b2 413 mod(scalar($2), OP_PREDEC)); }
55497cff 414 | local term %prec UNIOP
93a17b20 415 { $$ = localize($2,$1); }
a0d0e21e 416 | '(' expr ')'
79072805 417 { $$ = sawparens($2); }
8d063cd8 418 | '(' ')'
8990e307 419 { $$ = sawparens(newNULLLIST()); }
a0d0e21e 420 | '[' expr ']' %prec '('
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421 { $$ = newANONLIST($2); }
422 | '[' ']' %prec '('
423 { $$ = newANONLIST(Nullop); }
a0d0e21e 424 | HASHBRACK expr ';' '}' %prec '('
79072805
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425 { $$ = newANONHASH($2); }
426 | HASHBRACK ';' '}' %prec '('
427 { $$ = newANONHASH(Nullop); }
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428 | ANONSUB startsub proto block %prec '('
429 { $$ = newANONSUB($2, $3, $4); }
79072805 430 | scalar %prec '('
8d063cd8 431 { $$ = $1; }
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432 | star '{' expr ';' '}'
433 { $$ = newBINOP(OP_GELEM, 0, newGVREF(0,$1), $3); }
79072805 434 | star %prec '('
8d063cd8 435 { $$ = $1; }
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436 | scalar '[' expr ']' %prec '('
437 { $$ = newBINOP(OP_AELEM, 0, oopsAV($1), scalar($3)); }
438 | term ARROW '[' expr ']' %prec '('
439 { $$ = newBINOP(OP_AELEM, 0,
8990e307 440 ref(newAVREF($1),OP_RV2AV),
79072805 441 scalar($4));}
463ee0b2 442 | term '[' expr ']' %prec '('
a0d0e21e 443 { assertref($1); $$ = newBINOP(OP_AELEM, 0,
8990e307 444 ref(newAVREF($1),OP_RV2AV),
463ee0b2 445 scalar($3));}
79072805 446 | hsh %prec '('
8d063cd8 447 { $$ = $1; }
79072805 448 | ary %prec '('
8d063cd8 449 { $$ = $1; }
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450 | arylen %prec '('
451 { $$ = newUNOP(OP_AV2ARYLEN, 0, ref($1, OP_AV2ARYLEN));}
452 | scalar '{' expr ';' '}' %prec '('
453 { $$ = newBINOP(OP_HELEM, 0, oopsHV($1), jmaybe($3));
454 expect = XOPERATOR; }
455 | term ARROW '{' expr ';' '}' %prec '('
456 { $$ = newBINOP(OP_HELEM, 0,
8990e307 457 ref(newHVREF($1),OP_RV2HV),
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458 jmaybe($4));
459 expect = XOPERATOR; }
463ee0b2 460 | term '{' expr ';' '}' %prec '('
a0d0e21e 461 { assertref($1); $$ = newBINOP(OP_HELEM, 0,
8990e307 462 ref(newHVREF($1),OP_RV2HV),
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463 jmaybe($3));
464 expect = XOPERATOR; }
a0d0e21e 465 | '(' expr ')' '[' expr ']' %prec '('
79072805
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466 { $$ = newSLICEOP(0, $5, $2); }
467 | '(' ')' '[' expr ']' %prec '('
468 { $$ = newSLICEOP(0, $4, Nullop); }
469 | ary '[' expr ']' %prec '('
470 { $$ = prepend_elem(OP_ASLICE,
471 newOP(OP_PUSHMARK, 0),
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472 newLISTOP(OP_ASLICE, 0,
473 list($3),
a0d0e21e 474 ref($1, OP_ASLICE))); }
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475 | ary '{' expr ';' '}' %prec '('
476 { $$ = prepend_elem(OP_HSLICE,
477 newOP(OP_PUSHMARK, 0),
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478 newLISTOP(OP_HSLICE, 0,
479 list($3),
a0d0e21e 480 ref(oopsHV($1), OP_HSLICE)));
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481 expect = XOPERATOR; }
482 | THING %prec '('
483 { $$ = $1; }
484 | amper
c07a80fd 485 { $$ = newUNOP(OP_ENTERSUB, 0, scalar($1)); }
79072805 486 | amper '(' ')'
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487 { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, scalar($1)); }
488 | amper '(' expr ')'
489 { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
4633a7c4 490 append_elem(OP_LIST, $3, scalar($1))); }
93a17b20 491 | NOAMP WORD listexpr
a0d0e21e 492 { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
a5f75d66 493 append_elem(OP_LIST, $3, scalar($2))); }
a0d0e21e 494 | DO term %prec UNIOP
463ee0b2 495 { $$ = newUNOP(OP_DOFILE, 0, scalar($2)); }
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496 | DO block %prec '('
497 { $$ = newUNOP(OP_NULL, OPf_SPECIAL, scope($2)); }
8d063cd8 498 | DO WORD '(' ')'
c07a80fd
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499 { $$ = newUNOP(OP_ENTERSUB,
500 OPf_SPECIAL|OPf_STACKED,
4633a7c4 501 prepend_elem(OP_LIST,
c07a80fd
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502 scalar(newCVREF(
503 (OPpENTERSUB_AMPER<<8),
504 scalar($2)
505 )),Nullop)); dep();}
a0d0e21e 506 | DO WORD '(' expr ')'
c07a80fd
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507 { $$ = newUNOP(OP_ENTERSUB,
508 OPf_SPECIAL|OPf_STACKED,
4633a7c4 509 append_elem(OP_LIST,
a0d0e21e 510 $4,
c07a80fd
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511 scalar(newCVREF(
512 (OPpENTERSUB_AMPER<<8),
513 scalar($2)
514 )))); dep();}
79072805 515 | DO scalar '(' ')'
a0d0e21e 516 { $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED,
4633a7c4 517 prepend_elem(OP_LIST,
c07a80fd 518 scalar(newCVREF(0,scalar($2))), Nullop)); dep();}
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519 | DO scalar '(' expr ')'
520 { $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED,
4633a7c4 521 prepend_elem(OP_LIST,
a0d0e21e 522 $4,
c07a80fd 523 scalar(newCVREF(0,scalar($2))))); dep();}
8d063cd8 524 | LOOPEX
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525 { $$ = newOP($1, OPf_SPECIAL);
526 hints |= HINT_BLOCK_SCOPE; }
a0d0e21e 527 | LOOPEX term
8990e307 528 { $$ = newLOOPEX($1,$2); }
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529 | NOTOP argexpr
530 { $$ = newUNOP(OP_NOT, 0, scalar($2)); }
8d063cd8 531 | UNIOP
79072805 532 { $$ = newOP($1, 0); }
f0fcb552 533 | UNIOP block
79072805 534 { $$ = newUNOP($1, 0, $2); }
a0d0e21e 535 | UNIOP term
79072805 536 { $$ = newUNOP($1, 0, $2); }
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537 | UNIOPSUB term
538 { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
539 append_elem(OP_LIST, $2, scalar($1))); }
8d063cd8 540 | FUNC0
79072805 541 { $$ = newOP($1, 0); }
ae986130 542 | FUNC0 '(' ')'
79072805 543 { $$ = newOP($1, 0); }
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544 | FUNC0SUB
545 { $$ = newUNOP(OP_ENTERSUB, 0,
546 scalar($1)); }
03a14243 547 | FUNC1 '(' ')'
79072805 548 { $$ = newOP($1, OPf_SPECIAL); }
8d063cd8 549 | FUNC1 '(' expr ')'
79072805 550 { $$ = newUNOP($1, 0, $3); }
a0d0e21e 551 | PMFUNC '(' term ')'
79072805 552 { $$ = pmruntime($1, $3, Nullop); }
a0d0e21e 553 | PMFUNC '(' term ',' term ')'
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554 { $$ = pmruntime($1, $3, $5); }
555 | WORD
378cc40b 556 | listop
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557 ;
558
79072805 559listexpr: /* NULL */
8990e307 560 { $$ = Nullop; }
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561 | argexpr
562 { $$ = $1; }
563 ;
564
565listexprcom: /* NULL */
566 { $$ = Nullop; }
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567 | expr
568 { $$ = $1; }
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569 | expr ','
570 { $$ = $1; }
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571 ;
572
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573local : LOCAL { $$ = 0; }
574 | MY { $$ = 1; }
575 ;
576
577my_scalar: scalar
578 { in_my = 0; $$ = my($1); }
579 ;
580
79072805 581amper : '&' indirob
c07a80fd 582 { $$ = newCVREF($1,$2); }
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583 ;
584
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585scalar : '$' indirob
586 { $$ = newSVREF($2); }
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587 ;
588
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589ary : '@' indirob
590 { $$ = newAVREF($2); }
591 ;
592
593hsh : '%' indirob
594 { $$ = newHVREF($2); }
595 ;
596
597arylen : DOLSHARP indirob
598 { $$ = newAVREF($2); }
599 ;
600
601star : '*' indirob
a0d0e21e 602 { $$ = newGVREF(0,$2); }
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603 ;
604
605indirob : WORD
606 { $$ = scalar($1); }
607 | scalar
463ee0b2 608 { $$ = scalar($1); }
79072805 609 | block
a0d0e21e 610 { $$ = scope($1); }
79072805 611
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612 | PRIVATEREF
613 { $$ = $1; }
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614 ;
615
616%% /* PROGRAM */