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fe14fcc3 |
1 | /* $Header: perly.y,v 4.0 91/03/20 01:38:40 lwall Locked $ |
a687059c |
2 | * |
3 | * Copyright (c) 1989, Larry Wall |
4 | * |
5 | * You may distribute under the terms of the GNU General Public License |
6 | * as specified in the README file that comes with the perl 3.0 kit. |
8d063cd8 |
7 | * |
fe14fcc3 |
8 | * $Log: perly.y,v $ |
9 | * Revision 4.0 91/03/20 01:38:40 lwall |
10 | * 4.0 baseline. |
8d063cd8 |
11 | * |
12 | */ |
13 | |
14 | %{ |
8d063cd8 |
15 | #include "INTERN.h" |
16 | #include "perl.h" |
378cc40b |
17 | |
378cc40b |
18 | STAB *scrstab; |
a687059c |
19 | ARG *arg4; /* rarely used arguments to make_op() */ |
20 | ARG *arg5; |
378cc40b |
21 | |
8d063cd8 |
22 | %} |
23 | |
24 | %start prog |
25 | |
26 | %union { |
27 | int ival; |
28 | char *cval; |
29 | ARG *arg; |
30 | CMD *cmdval; |
31 | struct compcmd compval; |
32 | STAB *stabval; |
33 | FCMD *formval; |
34 | } |
35 | |
36 | %token <cval> WORD |
450a55e4 |
37 | %token <ival> APPEND OPEN SSELECT LOOPEX |
378cc40b |
38 | %token <ival> USING FORMAT DO SHIFT PUSH POP LVALFUN |
a687059c |
39 | %token <ival> WHILE UNTIL IF UNLESS ELSE ELSIF CONTINUE SPLIT FLIST |
40 | %token <ival> FOR FILOP FILOP2 FILOP3 FILOP4 FILOP22 FILOP25 |
d9d8d8de |
41 | %token <ival> FUNC0 FUNC1 FUNC2 FUNC2x FUNC3 FUNC4 FUNC5 HSHFUN HSHFUN3 |
a687059c |
42 | %token <ival> FLIST2 SUB FILETEST LOCAL DELETE |
d9d8d8de |
43 | %token <ival> RELOP EQOP MULOP ADDOP PACKAGE AMPER |
8d063cd8 |
44 | %token <formval> FORMLIST |
a687059c |
45 | %token <stabval> REG ARYLEN ARY HSH STAR |
8d063cd8 |
46 | %token <arg> SUBST PATTERN |
47 | %token <arg> RSTRING TRANS |
48 | |
a687059c |
49 | %type <ival> prog decl format remember |
8d063cd8 |
50 | %type <cmdval> block lineseq line loop cond sideff nexpr else |
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51 | %type <arg> expr sexpr cexpr csexpr term handle aryword hshword |
450a55e4 |
52 | %type <arg> texpr listop bareword |
8d063cd8 |
53 | %type <cval> label |
54 | %type <compval> compblock |
55 | |
378cc40b |
56 | %nonassoc <ival> LISTOP |
8d063cd8 |
57 | %left ',' |
8d063cd8 |
58 | %right '=' |
59 | %right '?' ':' |
60 | %nonassoc DOTDOT |
61 | %left OROR |
62 | %left ANDAND |
63 | %left '|' '^' |
64 | %left '&' |
a687059c |
65 | %nonassoc EQOP |
66 | %nonassoc RELOP |
378cc40b |
67 | %nonassoc <ival> UNIOP |
68 | %nonassoc FILETEST |
8d063cd8 |
69 | %left LS RS |
a687059c |
70 | %left ADDOP |
71 | %left MULOP |
8d063cd8 |
72 | %left MATCH NMATCH |
73 | %right '!' '~' UMINUS |
a687059c |
74 | %right POW |
8d063cd8 |
75 | %nonassoc INC DEC |
76 | %left '(' |
77 | |
78 | %% /* RULES */ |
79 | |
ae986130 |
80 | prog : /* NULL */ |
81 | { |
82 | #if defined(YYDEBUG) && defined(DEBUGGING) |
83 | yydebug = (debug & 1); |
84 | #endif |
85 | } |
86 | /*CONTINUED*/ lineseq |
a559c259 |
87 | { if (in_eval) |
ae986130 |
88 | eval_root = block_head($2); |
a559c259 |
89 | else |
ae986130 |
90 | main_root = block_head($2); } |
8d063cd8 |
91 | ; |
92 | |
93 | compblock: block CONTINUE block |
94 | { $$.comp_true = $1; $$.comp_alt = $3; } |
95 | | block else |
96 | { $$.comp_true = $1; $$.comp_alt = $2; } |
97 | ; |
98 | |
99 | else : /* NULL */ |
100 | { $$ = Nullcmd; } |
101 | | ELSE block |
102 | { $$ = $2; } |
103 | | ELSIF '(' expr ')' compblock |
378cc40b |
104 | { cmdline = $1; |
a687059c |
105 | $$ = make_ccmd(C_ELSIF,$3,$5); } |
8d063cd8 |
106 | ; |
107 | |
a687059c |
108 | block : '{' remember lineseq '}' |
109 | { $$ = block_head($3); |
110 | if (savestack->ary_fill > $2) |
111 | restorelist($2); } |
112 | ; |
113 | |
114 | remember: /* NULL */ /* in case they push a package name */ |
115 | { $$ = savestack->ary_fill; } |
8d063cd8 |
116 | ; |
117 | |
118 | lineseq : /* NULL */ |
119 | { $$ = Nullcmd; } |
120 | | lineseq line |
121 | { $$ = append_line($1,$2); } |
122 | ; |
123 | |
124 | line : decl |
125 | { $$ = Nullcmd; } |
126 | | label cond |
127 | { $$ = add_label($1,$2); } |
128 | | loop /* loops add their own labels */ |
129 | | label ';' |
130 | { if ($1 != Nullch) { |
378cc40b |
131 | $$ = add_label($1, make_acmd(C_EXPR, Nullstab, |
8d063cd8 |
132 | Nullarg, Nullarg) ); |
450a55e4 |
133 | } |
134 | else { |
135 | $$ = Nullcmd; |
136 | cmdline = NOLINE; |
137 | } } |
8d063cd8 |
138 | | label sideff ';' |
139 | { $$ = add_label($1,$2); } |
140 | ; |
141 | |
a687059c |
142 | sideff : error |
143 | { $$ = Nullcmd; } |
144 | | expr |
8d063cd8 |
145 | { $$ = make_acmd(C_EXPR, Nullstab, $1, Nullarg); } |
a687059c |
146 | | expr IF expr |
8d063cd8 |
147 | { $$ = addcond( |
a687059c |
148 | make_acmd(C_EXPR, Nullstab, Nullarg, $1), $3); } |
149 | | expr UNLESS expr |
150 | { $$ = addcond(invert( |
151 | make_acmd(C_EXPR, Nullstab, Nullarg, $1)), $3); } |
152 | | expr WHILE expr |
8d063cd8 |
153 | { $$ = addloop( |
a687059c |
154 | make_acmd(C_EXPR, Nullstab, Nullarg, $1), $3); } |
155 | | expr UNTIL expr |
156 | { $$ = addloop(invert( |
157 | make_acmd(C_EXPR, Nullstab, Nullarg, $1)), $3); } |
8d063cd8 |
158 | ; |
159 | |
160 | cond : IF '(' expr ')' compblock |
378cc40b |
161 | { cmdline = $1; |
a687059c |
162 | $$ = make_icmd(C_IF,$3,$5); } |
8d063cd8 |
163 | | UNLESS '(' expr ')' compblock |
378cc40b |
164 | { cmdline = $1; |
a687059c |
165 | $$ = invert(make_icmd(C_IF,$3,$5)); } |
8d063cd8 |
166 | | IF block compblock |
378cc40b |
167 | { cmdline = $1; |
168 | $$ = make_ccmd(C_IF,cmd_to_arg($2),$3); } |
8d063cd8 |
169 | | UNLESS block compblock |
378cc40b |
170 | { cmdline = $1; |
171 | $$ = invert(make_ccmd(C_IF,cmd_to_arg($2),$3)); } |
8d063cd8 |
172 | ; |
173 | |
174 | loop : label WHILE '(' texpr ')' compblock |
378cc40b |
175 | { cmdline = $2; |
176 | $$ = wopt(add_label($1, |
8d063cd8 |
177 | make_ccmd(C_WHILE,$4,$6) )); } |
178 | | label UNTIL '(' expr ')' compblock |
378cc40b |
179 | { cmdline = $2; |
180 | $$ = wopt(add_label($1, |
8d063cd8 |
181 | invert(make_ccmd(C_WHILE,$4,$6)) )); } |
182 | | label WHILE block compblock |
378cc40b |
183 | { cmdline = $2; |
184 | $$ = wopt(add_label($1, |
8d063cd8 |
185 | make_ccmd(C_WHILE, cmd_to_arg($3),$4) )); } |
186 | | label UNTIL block compblock |
378cc40b |
187 | { cmdline = $2; |
188 | $$ = wopt(add_label($1, |
8d063cd8 |
189 | invert(make_ccmd(C_WHILE, cmd_to_arg($3),$4)) )); } |
378cc40b |
190 | | label FOR REG '(' expr ')' compblock |
191 | { cmdline = $2; |
192 | /* |
193 | * The following gobbledygook catches EXPRs that |
194 | * aren't explicit array refs and translates |
195 | * foreach VAR (EXPR) { |
196 | * into |
197 | * @ary = EXPR; |
198 | * foreach VAR (@ary) { |
199 | * where @ary is a hidden array made by genstab(). |
a687059c |
200 | * (Note that @ary may become a local array if |
201 | * it is determined that it might be called |
202 | * recursively. See cmd_tosave().) |
378cc40b |
203 | */ |
204 | if ($5->arg_type != O_ARRAY) { |
205 | scrstab = aadd(genstab()); |
206 | $$ = append_line( |
207 | make_acmd(C_EXPR, Nullstab, |
208 | l(make_op(O_ASSIGN,2, |
209 | listish(make_op(O_ARRAY, 1, |
210 | stab2arg(A_STAB,scrstab), |
450a55e4 |
211 | Nullarg,Nullarg )), |
a687059c |
212 | listish(make_list($5)), |
213 | Nullarg)), |
378cc40b |
214 | Nullarg), |
215 | wopt(over($3,add_label($1, |
216 | make_ccmd(C_WHILE, |
217 | make_op(O_ARRAY, 1, |
218 | stab2arg(A_STAB,scrstab), |
a687059c |
219 | Nullarg,Nullarg ), |
378cc40b |
220 | $7))))); |
ac58e20f |
221 | $$->c_line = $2; |
222 | $$->c_head->c_line = $2; |
378cc40b |
223 | } |
224 | else { |
225 | $$ = wopt(over($3,add_label($1, |
226 | make_ccmd(C_WHILE,$5,$7) ))); |
227 | } |
228 | } |
229 | | label FOR '(' expr ')' compblock |
230 | { cmdline = $2; |
231 | if ($4->arg_type != O_ARRAY) { |
232 | scrstab = aadd(genstab()); |
233 | $$ = append_line( |
234 | make_acmd(C_EXPR, Nullstab, |
235 | l(make_op(O_ASSIGN,2, |
236 | listish(make_op(O_ARRAY, 1, |
237 | stab2arg(A_STAB,scrstab), |
450a55e4 |
238 | Nullarg,Nullarg )), |
a687059c |
239 | listish(make_list($4)), |
240 | Nullarg)), |
378cc40b |
241 | Nullarg), |
242 | wopt(over(defstab,add_label($1, |
243 | make_ccmd(C_WHILE, |
244 | make_op(O_ARRAY, 1, |
245 | stab2arg(A_STAB,scrstab), |
a687059c |
246 | Nullarg,Nullarg ), |
378cc40b |
247 | $6))))); |
ac58e20f |
248 | $$->c_line = $2; |
249 | $$->c_head->c_line = $2; |
378cc40b |
250 | } |
251 | else { /* lisp, anyone? */ |
252 | $$ = wopt(over(defstab,add_label($1, |
253 | make_ccmd(C_WHILE,$4,$6) ))); |
254 | } |
255 | } |
8d063cd8 |
256 | | label FOR '(' nexpr ';' texpr ';' nexpr ')' block |
257 | /* basically fake up an initialize-while lineseq */ |
258 | { yyval.compval.comp_true = $10; |
259 | yyval.compval.comp_alt = $8; |
378cc40b |
260 | cmdline = $2; |
8d063cd8 |
261 | $$ = append_line($4,wopt(add_label($1, |
262 | make_ccmd(C_WHILE,$6,yyval.compval) ))); } |
263 | | label compblock /* a block is a loop that happens once */ |
264 | { $$ = add_label($1,make_ccmd(C_BLOCK,Nullarg,$2)); } |
265 | ; |
266 | |
267 | nexpr : /* NULL */ |
268 | { $$ = Nullcmd; } |
269 | | sideff |
270 | ; |
271 | |
272 | texpr : /* NULL means true */ |
a687059c |
273 | { (void)scanstr("1"); $$ = yylval.arg; } |
8d063cd8 |
274 | | expr |
275 | ; |
276 | |
277 | label : /* empty */ |
278 | { $$ = Nullch; } |
279 | | WORD ':' |
280 | ; |
281 | |
8d063cd8 |
282 | decl : format |
283 | { $$ = 0; } |
284 | | subrout |
285 | { $$ = 0; } |
a687059c |
286 | | package |
287 | { $$ = 0; } |
8d063cd8 |
288 | ; |
289 | |
a687059c |
290 | format : FORMAT WORD '=' FORMLIST |
03a14243 |
291 | { if (strEQ($2,"stdout")) |
0f85fab0 |
292 | make_form(stabent("STDOUT",TRUE),$4); |
03a14243 |
293 | else if (strEQ($2,"stderr")) |
0f85fab0 |
294 | make_form(stabent("STDERR",TRUE),$4); |
03a14243 |
295 | else |
0f85fab0 |
296 | make_form(stabent($2,TRUE),$4); |
fe14fcc3 |
297 | Safefree($2); $2 = Nullch; } |
a687059c |
298 | | FORMAT '=' FORMLIST |
0f85fab0 |
299 | { make_form(stabent("STDOUT",TRUE),$3); } |
8d063cd8 |
300 | ; |
301 | |
302 | subrout : SUB WORD block |
378cc40b |
303 | { make_sub($2,$3); } |
8d063cd8 |
304 | ; |
305 | |
a687059c |
306 | package : PACKAGE WORD ';' |
307 | { char tmpbuf[256]; |
450a55e4 |
308 | STAB *tmpstab; |
a687059c |
309 | |
310 | savehptr(&curstash); |
311 | saveitem(curstname); |
312 | str_set(curstname,$2); |
313 | sprintf(tmpbuf,"'_%s",$2); |
c623bd54 |
314 | tmpstab = stabent(tmpbuf,TRUE); |
315 | if (!stab_xhash(tmpstab)) |
316 | stab_xhash(tmpstab) = hnew(0); |
450a55e4 |
317 | curstash = stab_xhash(tmpstab); |
d9d8d8de |
318 | if (!curstash->tbl_name) |
319 | curstash->tbl_name = savestr($2); |
a687059c |
320 | curstash->tbl_coeffsize = 0; |
fe14fcc3 |
321 | Safefree($2); $2 = Nullch; |
d9d8d8de |
322 | cmdline = NOLINE; |
a687059c |
323 | } |
324 | ; |
325 | |
326 | cexpr : ',' expr |
327 | { $$ = $2; } |
328 | ; |
329 | |
330 | expr : expr ',' sexpr |
331 | { $$ = make_op(O_COMMA, 2, $1, $3, Nullarg); } |
8d063cd8 |
332 | | sexpr |
333 | ; |
334 | |
a687059c |
335 | csexpr : ',' sexpr |
336 | { $$ = $2; } |
337 | ; |
338 | |
8d063cd8 |
339 | sexpr : sexpr '=' sexpr |
340 | { $1 = listish($1); |
a687059c |
341 | if ($1->arg_type == O_ASSIGN && $1->arg_len == 1) |
342 | $1->arg_type = O_ITEM; /* a local() */ |
8d063cd8 |
343 | if ($1->arg_type == O_LIST) |
344 | $3 = listish($3); |
a687059c |
345 | $$ = l(make_op(O_ASSIGN, 2, $1, $3, Nullarg)); } |
346 | | sexpr POW '=' sexpr |
347 | { $$ = l(make_op(O_POW, 2, $1, $4, Nullarg)); } |
348 | | sexpr MULOP '=' sexpr |
349 | { $$ = l(make_op($2, 2, $1, $4, Nullarg)); } |
350 | | sexpr ADDOP '=' sexpr |
351 | { $$ = rcatmaybe(l(make_op($2, 2, $1, $4, Nullarg)));} |
8d063cd8 |
352 | | sexpr LS '=' sexpr |
a687059c |
353 | { $$ = l(make_op(O_LEFT_SHIFT, 2, $1, $4, Nullarg)); } |
8d063cd8 |
354 | | sexpr RS '=' sexpr |
a687059c |
355 | { $$ = l(make_op(O_RIGHT_SHIFT, 2, $1, $4, Nullarg)); } |
8d063cd8 |
356 | | sexpr '&' '=' sexpr |
a687059c |
357 | { $$ = l(make_op(O_BIT_AND, 2, $1, $4, Nullarg)); } |
8d063cd8 |
358 | | sexpr '^' '=' sexpr |
a687059c |
359 | { $$ = l(make_op(O_XOR, 2, $1, $4, Nullarg)); } |
8d063cd8 |
360 | | sexpr '|' '=' sexpr |
a687059c |
361 | { $$ = l(make_op(O_BIT_OR, 2, $1, $4, Nullarg)); } |
362 | |
363 | |
364 | | sexpr POW sexpr |
365 | { $$ = make_op(O_POW, 2, $1, $3, Nullarg); } |
366 | | sexpr MULOP sexpr |
fe14fcc3 |
367 | { if ($2 == O_REPEAT) |
368 | $1 = listish($1); |
369 | $$ = make_op($2, 2, $1, $3, Nullarg); |
370 | if ($2 == O_REPEAT) { |
371 | if ($$[1].arg_type != A_EXPR || |
372 | $$[1].arg_ptr.arg_arg->arg_type != O_LIST) |
373 | $$[1].arg_flags &= ~AF_ARYOK; |
374 | } } |
a687059c |
375 | | sexpr ADDOP sexpr |
376 | { $$ = make_op($2, 2, $1, $3, Nullarg); } |
8d063cd8 |
377 | | sexpr LS sexpr |
a687059c |
378 | { $$ = make_op(O_LEFT_SHIFT, 2, $1, $3, Nullarg); } |
8d063cd8 |
379 | | sexpr RS sexpr |
a687059c |
380 | { $$ = make_op(O_RIGHT_SHIFT, 2, $1, $3, Nullarg); } |
381 | | sexpr RELOP sexpr |
382 | { $$ = make_op($2, 2, $1, $3, Nullarg); } |
383 | | sexpr EQOP sexpr |
384 | { $$ = make_op($2, 2, $1, $3, Nullarg); } |
8d063cd8 |
385 | | sexpr '&' sexpr |
a687059c |
386 | { $$ = make_op(O_BIT_AND, 2, $1, $3, Nullarg); } |
8d063cd8 |
387 | | sexpr '^' sexpr |
a687059c |
388 | { $$ = make_op(O_XOR, 2, $1, $3, Nullarg); } |
8d063cd8 |
389 | | sexpr '|' sexpr |
a687059c |
390 | { $$ = make_op(O_BIT_OR, 2, $1, $3, Nullarg); } |
8d063cd8 |
391 | | sexpr DOTDOT sexpr |
a687059c |
392 | { arg4 = Nullarg; |
393 | $$ = make_op(O_F_OR_R, 4, $1, $3, Nullarg); } |
8d063cd8 |
394 | | sexpr ANDAND sexpr |
a687059c |
395 | { $$ = make_op(O_AND, 2, $1, $3, Nullarg); } |
8d063cd8 |
396 | | sexpr OROR sexpr |
a687059c |
397 | { $$ = make_op(O_OR, 2, $1, $3, Nullarg); } |
8d063cd8 |
398 | | sexpr '?' sexpr ':' sexpr |
a687059c |
399 | { $$ = make_op(O_COND_EXPR, 3, $1, $3, $5); } |
8d063cd8 |
400 | | sexpr MATCH sexpr |
401 | { $$ = mod_match(O_MATCH, $1, $3); } |
402 | | sexpr NMATCH sexpr |
403 | { $$ = mod_match(O_NMATCH, $1, $3); } |
8d063cd8 |
404 | | term |
405 | { $$ = $1; } |
406 | ; |
407 | |
408 | term : '-' term %prec UMINUS |
a687059c |
409 | { $$ = make_op(O_NEGATE, 1, $2, Nullarg, Nullarg); } |
410 | | '+' term %prec UMINUS |
411 | { $$ = $2; } |
8d063cd8 |
412 | | '!' term |
a687059c |
413 | { $$ = make_op(O_NOT, 1, $2, Nullarg, Nullarg); } |
8d063cd8 |
414 | | '~' term |
a687059c |
415 | { $$ = make_op(O_COMPLEMENT, 1, $2, Nullarg, Nullarg);} |
ae986130 |
416 | | term INC |
417 | { $$ = addflags(1, AF_POST|AF_UP, |
418 | l(make_op(O_ITEM,1,$1,Nullarg,Nullarg))); } |
419 | | term DEC |
420 | { $$ = addflags(1, AF_POST, |
421 | l(make_op(O_ITEM,1,$1,Nullarg,Nullarg))); } |
422 | | INC term |
423 | { $$ = addflags(1, AF_PRE|AF_UP, |
424 | l(make_op(O_ITEM,1,$2,Nullarg,Nullarg))); } |
425 | | DEC term |
426 | { $$ = addflags(1, AF_PRE, |
427 | l(make_op(O_ITEM,1,$2,Nullarg,Nullarg))); } |
378cc40b |
428 | | FILETEST WORD |
429 | { opargs[$1] = 0; /* force it special */ |
430 | $$ = make_op($1, 1, |
431 | stab2arg(A_STAB,stabent($2,TRUE)), |
a687059c |
432 | Nullarg, Nullarg); |
378cc40b |
433 | } |
434 | | FILETEST sexpr |
435 | { opargs[$1] = 1; |
a687059c |
436 | $$ = make_op($1, 1, $2, Nullarg, Nullarg); } |
378cc40b |
437 | | FILETEST |
438 | { opargs[$1] = ($1 != O_FTTTY); |
439 | $$ = make_op($1, 1, |
440 | stab2arg(A_STAB, |
a687059c |
441 | $1 == O_FTTTY?stabent("STDIN",TRUE):defstab), |
442 | Nullarg, Nullarg); } |
378cc40b |
443 | | LOCAL '(' expr ')' |
ae986130 |
444 | { $$ = l(localize(make_op(O_ASSIGN, 1, |
a687059c |
445 | localize(listish(make_list($3))), |
ae986130 |
446 | Nullarg,Nullarg))); } |
79a0689e |
447 | | '(' expr ',' ')' |
fe14fcc3 |
448 | { $$ = make_list($2); } |
8d063cd8 |
449 | | '(' expr ')' |
fe14fcc3 |
450 | { $$ = make_list($2); } |
8d063cd8 |
451 | | '(' ')' |
452 | { $$ = make_list(Nullarg); } |
378cc40b |
453 | | DO sexpr %prec FILETEST |
d9d8d8de |
454 | { $$ = make_op(O_DOFILE,2,$2,Nullarg,Nullarg); |
a687059c |
455 | allstabs = TRUE;} |
8d063cd8 |
456 | | DO block %prec '(' |
457 | { $$ = cmd_to_arg($2); } |
458 | | REG %prec '(' |
378cc40b |
459 | { $$ = stab2arg(A_STAB,$1); } |
a687059c |
460 | | STAR %prec '(' |
461 | { $$ = stab2arg(A_STAR,$1); } |
8d063cd8 |
462 | | REG '[' expr ']' %prec '(' |
a687059c |
463 | { $$ = make_op(O_AELEM, 2, |
464 | stab2arg(A_STAB,aadd($1)), $3, Nullarg); } |
465 | | HSH %prec '(' |
466 | { $$ = make_op(O_HASH, 1, |
467 | stab2arg(A_STAB,$1), |
468 | Nullarg, Nullarg); } |
8d063cd8 |
469 | | ARY %prec '(' |
470 | { $$ = make_op(O_ARRAY, 1, |
378cc40b |
471 | stab2arg(A_STAB,$1), |
a687059c |
472 | Nullarg, Nullarg); } |
8d063cd8 |
473 | | REG '{' expr '}' %prec '(' |
a687059c |
474 | { $$ = make_op(O_HELEM, 2, |
475 | stab2arg(A_STAB,hadd($1)), |
476 | jmaybe($3), |
477 | Nullarg); } |
79a0689e |
478 | | '(' expr ')' '[' expr ']' %prec '(' |
479 | { $$ = make_op(O_LSLICE, 3, |
480 | Nullarg, |
481 | listish(make_list($5)), |
482 | listish(make_list($2))); } |
fe14fcc3 |
483 | | '(' ')' '[' expr ']' %prec '(' |
484 | { $$ = make_op(O_LSLICE, 3, |
485 | Nullarg, |
486 | listish(make_list($4)), |
487 | Nullarg); } |
a687059c |
488 | | ARY '[' expr ']' %prec '(' |
489 | { $$ = make_op(O_ASLICE, 2, |
490 | stab2arg(A_STAB,aadd($1)), |
491 | listish(make_list($3)), |
492 | Nullarg); } |
493 | | ARY '{' expr '}' %prec '(' |
494 | { $$ = make_op(O_HSLICE, 2, |
495 | stab2arg(A_STAB,hadd($1)), |
496 | listish(make_list($3)), |
497 | Nullarg); } |
378cc40b |
498 | | DELETE REG '{' expr '}' %prec '(' |
499 | { $$ = make_op(O_DELETE, 2, |
a687059c |
500 | stab2arg(A_STAB,hadd($2)), |
501 | jmaybe($4), |
502 | Nullarg); } |
8d063cd8 |
503 | | ARYLEN %prec '(' |
378cc40b |
504 | { $$ = stab2arg(A_ARYLEN,$1); } |
8d063cd8 |
505 | | RSTRING %prec '(' |
506 | { $$ = $1; } |
507 | | PATTERN %prec '(' |
508 | { $$ = $1; } |
509 | | SUBST %prec '(' |
510 | { $$ = $1; } |
511 | | TRANS %prec '(' |
512 | { $$ = $1; } |
513 | | DO WORD '(' expr ')' |
a687059c |
514 | { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, |
515 | stab2arg(A_WORD,stabent($2,TRUE)), |
8d063cd8 |
516 | make_list($4), |
fe14fcc3 |
517 | Nullarg); Safefree($2); $2 = Nullch; |
518 | $$->arg_flags |= AF_DEPR; } |
a687059c |
519 | | AMPER WORD '(' expr ')' |
520 | { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, |
378cc40b |
521 | stab2arg(A_WORD,stabent($2,TRUE)), |
a687059c |
522 | make_list($4), |
fe14fcc3 |
523 | Nullarg); Safefree($2); $2 = Nullch; } |
8d063cd8 |
524 | | DO WORD '(' ')' |
a687059c |
525 | { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, |
526 | stab2arg(A_WORD,stabent($2,TRUE)), |
8d063cd8 |
527 | make_list(Nullarg), |
fe14fcc3 |
528 | Nullarg); |
529 | $$->arg_flags |= AF_DEPR; } |
a687059c |
530 | | AMPER WORD '(' ')' |
531 | { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, |
378cc40b |
532 | stab2arg(A_WORD,stabent($2,TRUE)), |
a687059c |
533 | make_list(Nullarg), |
534 | Nullarg); } |
535 | | AMPER WORD |
536 | { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, |
537 | stab2arg(A_WORD,stabent($2,TRUE)), |
538 | Nullarg, |
539 | Nullarg); } |
378cc40b |
540 | | DO REG '(' expr ')' |
a687059c |
541 | { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, |
542 | stab2arg(A_STAB,$2), |
378cc40b |
543 | make_list($4), |
fe14fcc3 |
544 | Nullarg); |
545 | $$->arg_flags |= AF_DEPR; } |
a687059c |
546 | | AMPER REG '(' expr ')' |
547 | { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, |
378cc40b |
548 | stab2arg(A_STAB,$2), |
a687059c |
549 | make_list($4), |
550 | Nullarg); } |
378cc40b |
551 | | DO REG '(' ')' |
a687059c |
552 | { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, |
553 | stab2arg(A_STAB,$2), |
378cc40b |
554 | make_list(Nullarg), |
fe14fcc3 |
555 | Nullarg); |
556 | $$->arg_flags |= AF_DEPR; } |
a687059c |
557 | | AMPER REG '(' ')' |
558 | { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, |
378cc40b |
559 | stab2arg(A_STAB,$2), |
a687059c |
560 | make_list(Nullarg), |
561 | Nullarg); } |
562 | | AMPER REG |
563 | { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, |
564 | stab2arg(A_STAB,$2), |
565 | Nullarg, |
566 | Nullarg); } |
8d063cd8 |
567 | | LOOPEX |
a687059c |
568 | { $$ = make_op($1,0,Nullarg,Nullarg,Nullarg); } |
8d063cd8 |
569 | | LOOPEX WORD |
570 | { $$ = make_op($1,1,cval_to_arg($2), |
a687059c |
571 | Nullarg,Nullarg); } |
8d063cd8 |
572 | | UNIOP |
d9d8d8de |
573 | { $$ = make_op($1,0,Nullarg,Nullarg,Nullarg); } |
8d063cd8 |
574 | | UNIOP sexpr |
d9d8d8de |
575 | { $$ = make_op($1,1,$2,Nullarg,Nullarg); } |
450a55e4 |
576 | | SSELECT |
a687059c |
577 | { $$ = make_op(O_SELECT, 0, Nullarg, Nullarg, Nullarg);} |
450a55e4 |
578 | | SSELECT '(' handle ')' |
a687059c |
579 | { $$ = make_op(O_SELECT, 1, $3, Nullarg, Nullarg); } |
450a55e4 |
580 | | SSELECT '(' sexpr csexpr csexpr csexpr ')' |
a687059c |
581 | { arg4 = $6; |
582 | $$ = make_op(O_SSELECT, 4, $3, $4, $5); } |
8d063cd8 |
583 | | OPEN WORD %prec '(' |
584 | { $$ = make_op(O_OPEN, 2, |
378cc40b |
585 | stab2arg(A_WORD,stabent($2,TRUE)), |
586 | stab2arg(A_STAB,stabent($2,TRUE)), |
a687059c |
587 | Nullarg); } |
8d063cd8 |
588 | | OPEN '(' WORD ')' |
589 | { $$ = make_op(O_OPEN, 2, |
378cc40b |
590 | stab2arg(A_WORD,stabent($3,TRUE)), |
591 | stab2arg(A_STAB,stabent($3,TRUE)), |
a687059c |
592 | Nullarg); } |
593 | | OPEN '(' handle cexpr ')' |
378cc40b |
594 | { $$ = make_op(O_OPEN, 2, |
595 | $3, |
a687059c |
596 | $4, Nullarg); } |
597 | | FILOP '(' handle ')' |
598 | { $$ = make_op($1, 1, |
378cc40b |
599 | $3, |
a687059c |
600 | Nullarg, Nullarg); } |
601 | | FILOP WORD |
602 | { $$ = make_op($1, 1, |
378cc40b |
603 | stab2arg(A_WORD,stabent($2,TRUE)), |
a687059c |
604 | Nullarg, Nullarg); |
fe14fcc3 |
605 | Safefree($2); $2 = Nullch; } |
a687059c |
606 | | FILOP REG |
607 | { $$ = make_op($1, 1, |
608 | stab2arg(A_STAB,$2), |
609 | Nullarg, Nullarg); } |
610 | | FILOP '(' ')' |
611 | { $$ = make_op($1, 1, |
378cc40b |
612 | stab2arg(A_WORD,Nullstab), |
a687059c |
613 | Nullarg, Nullarg); } |
614 | | FILOP %prec '(' |
615 | { $$ = make_op($1, 0, |
616 | Nullarg, Nullarg, Nullarg); } |
617 | | FILOP2 '(' handle cexpr ')' |
618 | { $$ = make_op($1, 2, $3, $4, Nullarg); } |
619 | | FILOP3 '(' handle csexpr cexpr ')' |
663a0e37 |
620 | { $$ = make_op($1, 3, $3, $4, make_list($5)); } |
a687059c |
621 | | FILOP22 '(' handle ',' handle ')' |
622 | { $$ = make_op($1, 2, $3, $5, Nullarg); } |
623 | | FILOP4 '(' handle csexpr csexpr cexpr ')' |
624 | { arg4 = $6; $$ = make_op($1, 4, $3, $4, $5); } |
625 | | FILOP25 '(' handle ',' handle csexpr csexpr cexpr ')' |
626 | { arg4 = $7; arg5 = $8; |
627 | $$ = make_op($1, 5, $3, $5, $6); } |
628 | | PUSH '(' aryword cexpr ')' |
8d063cd8 |
629 | { $$ = make_op($1, 2, |
a687059c |
630 | $3, |
631 | make_list($4), |
632 | Nullarg); } |
633 | | POP aryword %prec '(' |
634 | { $$ = make_op(O_POP, 1, $2, Nullarg, Nullarg); } |
635 | | POP '(' aryword ')' |
636 | { $$ = make_op(O_POP, 1, $3, Nullarg, Nullarg); } |
637 | | SHIFT aryword %prec '(' |
638 | { $$ = make_op(O_SHIFT, 1, $2, Nullarg, Nullarg); } |
639 | | SHIFT '(' aryword ')' |
640 | { $$ = make_op(O_SHIFT, 1, $3, Nullarg, Nullarg); } |
8d063cd8 |
641 | | SHIFT %prec '(' |
642 | { $$ = make_op(O_SHIFT, 1, |
a687059c |
643 | stab2arg(A_STAB, |
644 | aadd(stabent(subline ? "_" : "ARGV", TRUE))), |
645 | Nullarg, Nullarg); } |
8d063cd8 |
646 | | SPLIT %prec '(' |
c623bd54 |
647 | { static char p[]="/\\s+/"; |
648 | char *oldend = bufend; |
27e2fb84 |
649 | ARG *oldarg = yylval.arg; |
c623bd54 |
650 | |
651 | bufend=p+5; |
652 | (void)scanpat(p); |
653 | bufend=oldend; |
654 | $$ = make_split(defstab,yylval.arg,Nullarg); |
655 | yylval.arg = oldarg; } |
a687059c |
656 | | SPLIT '(' sexpr csexpr csexpr ')' |
657 | { $$ = mod_match(O_MATCH, $4, |
658 | make_split(defstab,$3,$5));} |
659 | | SPLIT '(' sexpr csexpr ')' |
660 | { $$ = mod_match(O_MATCH, $4, |
661 | make_split(defstab,$3,Nullarg) ); } |
8d063cd8 |
662 | | SPLIT '(' sexpr ')' |
663 | { $$ = mod_match(O_MATCH, |
378cc40b |
664 | stab2arg(A_STAB,defstab), |
a687059c |
665 | make_split(defstab,$3,Nullarg) ); } |
666 | | FLIST2 '(' sexpr cexpr ')' |
667 | { $$ = make_op($1, 2, |
8d063cd8 |
668 | $3, |
a687059c |
669 | listish(make_list($4)), |
670 | Nullarg); } |
671 | | FLIST '(' expr ')' |
672 | { $$ = make_op($1, 1, |
8d063cd8 |
673 | make_list($3), |
674 | Nullarg, |
a687059c |
675 | Nullarg); } |
676 | | LVALFUN sexpr %prec '(' |
677 | { $$ = l(make_op($1, 1, fixl($1,$2), |
678 | Nullarg, Nullarg)); } |
378cc40b |
679 | | LVALFUN |
680 | { $$ = l(make_op($1, 1, |
681 | stab2arg(A_STAB,defstab), |
a687059c |
682 | Nullarg, Nullarg)); } |
8d063cd8 |
683 | | FUNC0 |
a687059c |
684 | { $$ = make_op($1, 0, Nullarg, Nullarg, Nullarg); } |
ae986130 |
685 | | FUNC0 '(' ')' |
686 | { $$ = make_op($1, 0, Nullarg, Nullarg, Nullarg); } |
03a14243 |
687 | | FUNC1 '(' ')' |
d9d8d8de |
688 | { $$ = make_op($1, 0, Nullarg, Nullarg, Nullarg); } |
8d063cd8 |
689 | | FUNC1 '(' expr ')' |
d9d8d8de |
690 | { $$ = make_op($1, 1, $3, Nullarg, Nullarg); } |
a687059c |
691 | | FUNC2 '(' sexpr cexpr ')' |
692 | { $$ = make_op($1, 2, $3, $4, Nullarg); |
378cc40b |
693 | if ($1 == O_INDEX && $$[2].arg_type == A_SINGLE) |
a687059c |
694 | fbmcompile($$[2].arg_ptr.arg_str,0); } |
d9d8d8de |
695 | | FUNC2x '(' sexpr csexpr ')' |
696 | { $$ = make_op($1, 2, $3, $4, Nullarg); |
697 | if ($1 == O_INDEX && $$[2].arg_type == A_SINGLE) |
698 | fbmcompile($$[2].arg_ptr.arg_str,0); } |
699 | | FUNC2x '(' sexpr csexpr cexpr ')' |
700 | { $$ = make_op($1, 3, $3, $4, $5); |
701 | if ($1 == O_INDEX && $$[2].arg_type == A_SINGLE) |
702 | fbmcompile($$[2].arg_ptr.arg_str,0); } |
a687059c |
703 | | FUNC3 '(' sexpr csexpr cexpr ')' |
704 | { $$ = make_op($1, 3, $3, $4, $5); } |
d9d8d8de |
705 | | FUNC4 '(' sexpr csexpr csexpr cexpr ')' |
706 | { arg4 = $6; |
707 | $$ = make_op($1, 4, $3, $4, $5); } |
708 | | FUNC5 '(' sexpr csexpr csexpr csexpr cexpr ')' |
709 | { arg4 = $6; arg5 = $7; |
710 | $$ = make_op($1, 5, $3, $4, $5); } |
a687059c |
711 | | HSHFUN '(' hshword ')' |
712 | { $$ = make_op($1, 1, |
713 | $3, |
714 | Nullarg, |
715 | Nullarg); } |
716 | | HSHFUN hshword |
8d063cd8 |
717 | { $$ = make_op($1, 1, |
a687059c |
718 | $2, |
8d063cd8 |
719 | Nullarg, |
a687059c |
720 | Nullarg); } |
721 | | HSHFUN3 '(' hshword csexpr cexpr ')' |
722 | { $$ = make_op($1, 3, $3, $4, $5); } |
450a55e4 |
723 | | bareword |
378cc40b |
724 | | listop |
8d063cd8 |
725 | ; |
726 | |
378cc40b |
727 | listop : LISTOP |
8d063cd8 |
728 | { $$ = make_op($1,2, |
378cc40b |
729 | stab2arg(A_WORD,Nullstab), |
a687059c |
730 | stab2arg(A_STAB,defstab), |
731 | Nullarg); } |
378cc40b |
732 | | LISTOP expr |
a687059c |
733 | { $$ = make_op($1,2, |
378cc40b |
734 | stab2arg(A_WORD,Nullstab), |
a687059c |
735 | maybelistish($1,make_list($2)), |
736 | Nullarg); } |
378cc40b |
737 | | LISTOP WORD |
8d063cd8 |
738 | { $$ = make_op($1,2, |
378cc40b |
739 | stab2arg(A_WORD,stabent($2,TRUE)), |
a687059c |
740 | stab2arg(A_STAB,defstab), |
741 | Nullarg); } |
378cc40b |
742 | | LISTOP WORD expr |
a687059c |
743 | { $$ = make_op($1,2, |
378cc40b |
744 | stab2arg(A_WORD,stabent($2,TRUE)), |
a687059c |
745 | maybelistish($1,make_list($3)), |
fe14fcc3 |
746 | Nullarg); Safefree($2); $2 = Nullch; } |
378cc40b |
747 | | LISTOP REG expr |
a687059c |
748 | { $$ = make_op($1,2, |
378cc40b |
749 | stab2arg(A_STAB,$2), |
a687059c |
750 | maybelistish($1,make_list($3)), |
751 | Nullarg); } |
752 | ; |
753 | |
754 | handle : WORD |
fe14fcc3 |
755 | { $$ = stab2arg(A_WORD,stabent($1,TRUE)); |
756 | Safefree($1); $1 = Nullch;} |
a687059c |
757 | | sexpr |
758 | ; |
759 | |
760 | aryword : WORD |
761 | { $$ = stab2arg(A_WORD,aadd(stabent($1,TRUE))); |
fe14fcc3 |
762 | Safefree($1); $1 = Nullch; } |
a687059c |
763 | | ARY |
764 | { $$ = stab2arg(A_STAB,$1); } |
765 | ; |
766 | |
767 | hshword : WORD |
768 | { $$ = stab2arg(A_WORD,hadd(stabent($1,TRUE))); |
fe14fcc3 |
769 | Safefree($1); $1 = Nullch; } |
a687059c |
770 | | HSH |
771 | { $$ = stab2arg(A_STAB,$1); } |
8d063cd8 |
772 | ; |
773 | |
450a55e4 |
774 | /* |
775 | * NOTE: The following entry must stay at the end of the file so that |
776 | * reduce/reduce conflicts resolve to it only if it's the only option. |
777 | */ |
778 | |
779 | bareword: WORD |
6eb13c3b |
780 | { char *s; |
450a55e4 |
781 | $$ = op_new(1); |
782 | $$->arg_type = O_ITEM; |
783 | $$[1].arg_type = A_SINGLE; |
784 | $$[1].arg_ptr.arg_str = str_make($1,0); |
6eb13c3b |
785 | for (s = $1; *s && islower(*s); s++) ; |
450a55e4 |
786 | if (dowarn && !*s) |
6eb13c3b |
787 | warn( |
788 | "\"%s\" may clash with future reserved word", |
789 | $1 ); |
450a55e4 |
790 | } |
791 | |
8d063cd8 |
792 | %% /* PROGRAM */ |