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1 | /* $Header: perl.y,v 3.0.1.9 90/10/15 18:01:45 lwall Locked $ |
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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. |
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7 | * |
8 | * $Log: perl.y,v $ |
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9 | * Revision 3.0.1.9 90/10/15 18:01:45 lwall |
10 | * patch29: added SysV IPC |
11 | * patch29: package behavior is now more consistent |
12 | * patch29: index and substr now have optional 3rd args |
13 | * |
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14 | * Revision 3.0.1.8 90/08/13 22:19:55 lwall |
15 | * patch28: lowercase unquoted strings caused infinite loop |
16 | * |
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17 | * Revision 3.0.1.7 90/08/09 04:17:44 lwall |
18 | * patch19: did preliminary work toward debugging packages and evals |
19 | * patch19: added require operator |
20 | * patch19: bare identifiers are now strings if no other interpretation possible |
21 | * patch19: null-label lines threw off line number of next statement |
22 | * patch19: split; didn't pass correct bufend to scanpat |
23 | * |
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24 | * Revision 3.0.1.6 90/03/27 16:13:45 lwall |
25 | * patch16: formats didn't work inside eval |
26 | * |
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27 | * Revision 3.0.1.5 90/03/12 16:55:56 lwall |
28 | * patch13: added list slice operator (LIST)[LIST] |
29 | * patch13: (LIST,) now legal |
30 | * |
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31 | * Revision 3.0.1.4 90/02/28 18:03:23 lwall |
32 | * patch9: line numbers were bogus during certain portions of foreach evaluation |
33 | * |
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34 | * Revision 3.0.1.3 89/12/21 20:13:41 lwall |
35 | * patch7: send() didn't allow a TO argument |
36 | * |
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37 | * Revision 3.0.1.2 89/11/11 04:49:04 lwall |
38 | * patch2: moved yydebug to where its type doesn't matter |
39 | * patch2: !$foo++ was unreasonably illegal |
40 | * patch2: local(@foo) didn't work |
41 | * patch2: default args to unary operators didn't work |
42 | * |
03a14243 |
43 | * Revision 3.0.1.1 89/10/26 23:20:41 lwall |
44 | * patch1: grandfathered "format stdout" |
45 | * patch1: operator(); is now normally equivalent to operator; |
46 | * |
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47 | * Revision 3.0 89/10/18 15:22:04 lwall |
48 | * 3.0 baseline |
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49 | * |
50 | */ |
51 | |
52 | %{ |
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53 | #include "INTERN.h" |
54 | #include "perl.h" |
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55 | |
378cc40b |
56 | STAB *scrstab; |
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57 | ARG *arg4; /* rarely used arguments to make_op() */ |
58 | ARG *arg5; |
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59 | |
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60 | %} |
61 | |
62 | %start prog |
63 | |
64 | %union { |
65 | int ival; |
66 | char *cval; |
67 | ARG *arg; |
68 | CMD *cmdval; |
69 | struct compcmd compval; |
70 | STAB *stabval; |
71 | FCMD *formval; |
72 | } |
73 | |
74 | %token <cval> WORD |
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75 | %token <ival> APPEND OPEN SSELECT LOOPEX |
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76 | %token <ival> USING FORMAT DO SHIFT PUSH POP LVALFUN |
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77 | %token <ival> WHILE UNTIL IF UNLESS ELSE ELSIF CONTINUE SPLIT FLIST |
78 | %token <ival> FOR FILOP FILOP2 FILOP3 FILOP4 FILOP22 FILOP25 |
d9d8d8de |
79 | %token <ival> FUNC0 FUNC1 FUNC2 FUNC2x FUNC3 FUNC4 FUNC5 HSHFUN HSHFUN3 |
a687059c |
80 | %token <ival> FLIST2 SUB FILETEST LOCAL DELETE |
d9d8d8de |
81 | %token <ival> RELOP EQOP MULOP ADDOP PACKAGE AMPER |
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82 | %token <formval> FORMLIST |
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83 | %token <stabval> REG ARYLEN ARY HSH STAR |
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84 | %token <arg> SUBST PATTERN |
85 | %token <arg> RSTRING TRANS |
86 | |
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87 | %type <ival> prog decl format remember |
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88 | %type <cmdval> block lineseq line loop cond sideff nexpr else |
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89 | %type <arg> expr sexpr cexpr csexpr term handle aryword hshword |
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90 | %type <arg> texpr listop bareword |
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91 | %type <cval> label |
92 | %type <compval> compblock |
93 | |
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94 | %nonassoc <ival> LISTOP |
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95 | %left ',' |
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96 | %right '=' |
97 | %right '?' ':' |
98 | %nonassoc DOTDOT |
99 | %left OROR |
100 | %left ANDAND |
101 | %left '|' '^' |
102 | %left '&' |
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103 | %nonassoc EQOP |
104 | %nonassoc RELOP |
378cc40b |
105 | %nonassoc <ival> UNIOP |
106 | %nonassoc FILETEST |
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107 | %left LS RS |
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108 | %left ADDOP |
109 | %left MULOP |
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110 | %left MATCH NMATCH |
111 | %right '!' '~' UMINUS |
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112 | %right POW |
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113 | %nonassoc INC DEC |
114 | %left '(' |
115 | |
116 | %% /* RULES */ |
117 | |
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118 | prog : /* NULL */ |
119 | { |
120 | #if defined(YYDEBUG) && defined(DEBUGGING) |
121 | yydebug = (debug & 1); |
122 | #endif |
123 | } |
124 | /*CONTINUED*/ lineseq |
a559c259 |
125 | { if (in_eval) |
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126 | eval_root = block_head($2); |
a559c259 |
127 | else |
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128 | main_root = block_head($2); } |
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129 | ; |
130 | |
131 | compblock: block CONTINUE block |
132 | { $$.comp_true = $1; $$.comp_alt = $3; } |
133 | | block else |
134 | { $$.comp_true = $1; $$.comp_alt = $2; } |
135 | ; |
136 | |
137 | else : /* NULL */ |
138 | { $$ = Nullcmd; } |
139 | | ELSE block |
140 | { $$ = $2; } |
141 | | ELSIF '(' expr ')' compblock |
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142 | { cmdline = $1; |
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143 | $$ = make_ccmd(C_ELSIF,$3,$5); } |
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144 | ; |
145 | |
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146 | block : '{' remember lineseq '}' |
147 | { $$ = block_head($3); |
148 | if (savestack->ary_fill > $2) |
149 | restorelist($2); } |
150 | ; |
151 | |
152 | remember: /* NULL */ /* in case they push a package name */ |
153 | { $$ = savestack->ary_fill; } |
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154 | ; |
155 | |
156 | lineseq : /* NULL */ |
157 | { $$ = Nullcmd; } |
158 | | lineseq line |
159 | { $$ = append_line($1,$2); } |
160 | ; |
161 | |
162 | line : decl |
163 | { $$ = Nullcmd; } |
164 | | label cond |
165 | { $$ = add_label($1,$2); } |
166 | | loop /* loops add their own labels */ |
167 | | label ';' |
168 | { if ($1 != Nullch) { |
378cc40b |
169 | $$ = add_label($1, make_acmd(C_EXPR, Nullstab, |
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170 | Nullarg, Nullarg) ); |
450a55e4 |
171 | } |
172 | else { |
173 | $$ = Nullcmd; |
174 | cmdline = NOLINE; |
175 | } } |
8d063cd8 |
176 | | label sideff ';' |
177 | { $$ = add_label($1,$2); } |
178 | ; |
179 | |
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180 | sideff : error |
181 | { $$ = Nullcmd; } |
182 | | expr |
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183 | { $$ = make_acmd(C_EXPR, Nullstab, $1, Nullarg); } |
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184 | | expr IF expr |
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185 | { $$ = addcond( |
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186 | make_acmd(C_EXPR, Nullstab, Nullarg, $1), $3); } |
187 | | expr UNLESS expr |
188 | { $$ = addcond(invert( |
189 | make_acmd(C_EXPR, Nullstab, Nullarg, $1)), $3); } |
190 | | expr WHILE expr |
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191 | { $$ = addloop( |
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192 | make_acmd(C_EXPR, Nullstab, Nullarg, $1), $3); } |
193 | | expr UNTIL expr |
194 | { $$ = addloop(invert( |
195 | make_acmd(C_EXPR, Nullstab, Nullarg, $1)), $3); } |
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196 | ; |
197 | |
198 | cond : IF '(' expr ')' compblock |
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199 | { cmdline = $1; |
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200 | $$ = make_icmd(C_IF,$3,$5); } |
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201 | | UNLESS '(' expr ')' compblock |
378cc40b |
202 | { cmdline = $1; |
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203 | $$ = invert(make_icmd(C_IF,$3,$5)); } |
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204 | | IF block compblock |
378cc40b |
205 | { cmdline = $1; |
206 | $$ = make_ccmd(C_IF,cmd_to_arg($2),$3); } |
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207 | | UNLESS block compblock |
378cc40b |
208 | { cmdline = $1; |
209 | $$ = invert(make_ccmd(C_IF,cmd_to_arg($2),$3)); } |
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210 | ; |
211 | |
212 | loop : label WHILE '(' texpr ')' compblock |
378cc40b |
213 | { cmdline = $2; |
214 | $$ = wopt(add_label($1, |
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215 | make_ccmd(C_WHILE,$4,$6) )); } |
216 | | label UNTIL '(' expr ')' compblock |
378cc40b |
217 | { cmdline = $2; |
218 | $$ = wopt(add_label($1, |
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219 | invert(make_ccmd(C_WHILE,$4,$6)) )); } |
220 | | label WHILE block compblock |
378cc40b |
221 | { cmdline = $2; |
222 | $$ = wopt(add_label($1, |
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223 | make_ccmd(C_WHILE, cmd_to_arg($3),$4) )); } |
224 | | label UNTIL block compblock |
378cc40b |
225 | { cmdline = $2; |
226 | $$ = wopt(add_label($1, |
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227 | invert(make_ccmd(C_WHILE, cmd_to_arg($3),$4)) )); } |
378cc40b |
228 | | label FOR REG '(' expr ')' compblock |
229 | { cmdline = $2; |
230 | /* |
231 | * The following gobbledygook catches EXPRs that |
232 | * aren't explicit array refs and translates |
233 | * foreach VAR (EXPR) { |
234 | * into |
235 | * @ary = EXPR; |
236 | * foreach VAR (@ary) { |
237 | * where @ary is a hidden array made by genstab(). |
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238 | * (Note that @ary may become a local array if |
239 | * it is determined that it might be called |
240 | * recursively. See cmd_tosave().) |
378cc40b |
241 | */ |
242 | if ($5->arg_type != O_ARRAY) { |
243 | scrstab = aadd(genstab()); |
244 | $$ = append_line( |
245 | make_acmd(C_EXPR, Nullstab, |
246 | l(make_op(O_ASSIGN,2, |
247 | listish(make_op(O_ARRAY, 1, |
248 | stab2arg(A_STAB,scrstab), |
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249 | Nullarg,Nullarg )), |
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250 | listish(make_list($5)), |
251 | Nullarg)), |
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252 | Nullarg), |
253 | wopt(over($3,add_label($1, |
254 | make_ccmd(C_WHILE, |
255 | make_op(O_ARRAY, 1, |
256 | stab2arg(A_STAB,scrstab), |
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257 | Nullarg,Nullarg ), |
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258 | $7))))); |
ac58e20f |
259 | $$->c_line = $2; |
260 | $$->c_head->c_line = $2; |
378cc40b |
261 | } |
262 | else { |
263 | $$ = wopt(over($3,add_label($1, |
264 | make_ccmd(C_WHILE,$5,$7) ))); |
265 | } |
266 | } |
267 | | label FOR '(' expr ')' compblock |
268 | { cmdline = $2; |
269 | if ($4->arg_type != O_ARRAY) { |
270 | scrstab = aadd(genstab()); |
271 | $$ = append_line( |
272 | make_acmd(C_EXPR, Nullstab, |
273 | l(make_op(O_ASSIGN,2, |
274 | listish(make_op(O_ARRAY, 1, |
275 | stab2arg(A_STAB,scrstab), |
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276 | Nullarg,Nullarg )), |
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277 | listish(make_list($4)), |
278 | Nullarg)), |
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279 | Nullarg), |
280 | wopt(over(defstab,add_label($1, |
281 | make_ccmd(C_WHILE, |
282 | make_op(O_ARRAY, 1, |
283 | stab2arg(A_STAB,scrstab), |
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284 | Nullarg,Nullarg ), |
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285 | $6))))); |
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286 | $$->c_line = $2; |
287 | $$->c_head->c_line = $2; |
378cc40b |
288 | } |
289 | else { /* lisp, anyone? */ |
290 | $$ = wopt(over(defstab,add_label($1, |
291 | make_ccmd(C_WHILE,$4,$6) ))); |
292 | } |
293 | } |
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294 | | label FOR '(' nexpr ';' texpr ';' nexpr ')' block |
295 | /* basically fake up an initialize-while lineseq */ |
296 | { yyval.compval.comp_true = $10; |
297 | yyval.compval.comp_alt = $8; |
378cc40b |
298 | cmdline = $2; |
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299 | $$ = append_line($4,wopt(add_label($1, |
300 | make_ccmd(C_WHILE,$6,yyval.compval) ))); } |
301 | | label compblock /* a block is a loop that happens once */ |
302 | { $$ = add_label($1,make_ccmd(C_BLOCK,Nullarg,$2)); } |
303 | ; |
304 | |
305 | nexpr : /* NULL */ |
306 | { $$ = Nullcmd; } |
307 | | sideff |
308 | ; |
309 | |
310 | texpr : /* NULL means true */ |
a687059c |
311 | { (void)scanstr("1"); $$ = yylval.arg; } |
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312 | | expr |
313 | ; |
314 | |
315 | label : /* empty */ |
316 | { $$ = Nullch; } |
317 | | WORD ':' |
318 | ; |
319 | |
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320 | decl : format |
321 | { $$ = 0; } |
322 | | subrout |
323 | { $$ = 0; } |
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324 | | package |
325 | { $$ = 0; } |
8d063cd8 |
326 | ; |
327 | |
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328 | format : FORMAT WORD '=' FORMLIST |
03a14243 |
329 | { if (strEQ($2,"stdout")) |
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330 | make_form(stabent("STDOUT",TRUE),$4); |
03a14243 |
331 | else if (strEQ($2,"stderr")) |
0f85fab0 |
332 | make_form(stabent("STDERR",TRUE),$4); |
03a14243 |
333 | else |
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334 | make_form(stabent($2,TRUE),$4); |
03a14243 |
335 | Safefree($2);} |
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336 | | FORMAT '=' FORMLIST |
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337 | { make_form(stabent("STDOUT",TRUE),$3); } |
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338 | ; |
339 | |
340 | subrout : SUB WORD block |
378cc40b |
341 | { make_sub($2,$3); } |
8d063cd8 |
342 | ; |
343 | |
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344 | package : PACKAGE WORD ';' |
345 | { char tmpbuf[256]; |
450a55e4 |
346 | STAB *tmpstab; |
a687059c |
347 | |
348 | savehptr(&curstash); |
349 | saveitem(curstname); |
350 | str_set(curstname,$2); |
351 | sprintf(tmpbuf,"'_%s",$2); |
450a55e4 |
352 | tmpstab = hadd(stabent(tmpbuf,TRUE)); |
353 | curstash = stab_xhash(tmpstab); |
d9d8d8de |
354 | if (!curstash->tbl_name) |
355 | curstash->tbl_name = savestr($2); |
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356 | curstash->tbl_coeffsize = 0; |
357 | Safefree($2); |
d9d8d8de |
358 | cmdline = NOLINE; |
a687059c |
359 | } |
360 | ; |
361 | |
362 | cexpr : ',' expr |
363 | { $$ = $2; } |
364 | ; |
365 | |
366 | expr : expr ',' sexpr |
367 | { $$ = make_op(O_COMMA, 2, $1, $3, Nullarg); } |
8d063cd8 |
368 | | sexpr |
369 | ; |
370 | |
a687059c |
371 | csexpr : ',' sexpr |
372 | { $$ = $2; } |
373 | ; |
374 | |
8d063cd8 |
375 | sexpr : sexpr '=' sexpr |
376 | { $1 = listish($1); |
a687059c |
377 | if ($1->arg_type == O_ASSIGN && $1->arg_len == 1) |
378 | $1->arg_type = O_ITEM; /* a local() */ |
8d063cd8 |
379 | if ($1->arg_type == O_LIST) |
380 | $3 = listish($3); |
a687059c |
381 | $$ = l(make_op(O_ASSIGN, 2, $1, $3, Nullarg)); } |
382 | | sexpr POW '=' sexpr |
383 | { $$ = l(make_op(O_POW, 2, $1, $4, Nullarg)); } |
384 | | sexpr MULOP '=' sexpr |
385 | { $$ = l(make_op($2, 2, $1, $4, Nullarg)); } |
386 | | sexpr ADDOP '=' sexpr |
387 | { $$ = rcatmaybe(l(make_op($2, 2, $1, $4, Nullarg)));} |
8d063cd8 |
388 | | sexpr LS '=' sexpr |
a687059c |
389 | { $$ = l(make_op(O_LEFT_SHIFT, 2, $1, $4, Nullarg)); } |
8d063cd8 |
390 | | sexpr RS '=' sexpr |
a687059c |
391 | { $$ = l(make_op(O_RIGHT_SHIFT, 2, $1, $4, Nullarg)); } |
8d063cd8 |
392 | | sexpr '&' '=' sexpr |
a687059c |
393 | { $$ = l(make_op(O_BIT_AND, 2, $1, $4, Nullarg)); } |
8d063cd8 |
394 | | sexpr '^' '=' sexpr |
a687059c |
395 | { $$ = l(make_op(O_XOR, 2, $1, $4, Nullarg)); } |
8d063cd8 |
396 | | sexpr '|' '=' sexpr |
a687059c |
397 | { $$ = l(make_op(O_BIT_OR, 2, $1, $4, Nullarg)); } |
398 | |
399 | |
400 | | sexpr POW sexpr |
401 | { $$ = make_op(O_POW, 2, $1, $3, Nullarg); } |
402 | | sexpr MULOP sexpr |
403 | { $$ = make_op($2, 2, $1, $3, Nullarg); } |
404 | | sexpr ADDOP sexpr |
405 | { $$ = make_op($2, 2, $1, $3, Nullarg); } |
8d063cd8 |
406 | | sexpr LS sexpr |
a687059c |
407 | { $$ = make_op(O_LEFT_SHIFT, 2, $1, $3, Nullarg); } |
8d063cd8 |
408 | | sexpr RS sexpr |
a687059c |
409 | { $$ = make_op(O_RIGHT_SHIFT, 2, $1, $3, Nullarg); } |
410 | | sexpr RELOP sexpr |
411 | { $$ = make_op($2, 2, $1, $3, Nullarg); } |
412 | | sexpr EQOP sexpr |
413 | { $$ = make_op($2, 2, $1, $3, Nullarg); } |
8d063cd8 |
414 | | sexpr '&' sexpr |
a687059c |
415 | { $$ = make_op(O_BIT_AND, 2, $1, $3, Nullarg); } |
8d063cd8 |
416 | | sexpr '^' sexpr |
a687059c |
417 | { $$ = make_op(O_XOR, 2, $1, $3, Nullarg); } |
8d063cd8 |
418 | | sexpr '|' sexpr |
a687059c |
419 | { $$ = make_op(O_BIT_OR, 2, $1, $3, Nullarg); } |
8d063cd8 |
420 | | sexpr DOTDOT sexpr |
a687059c |
421 | { arg4 = Nullarg; |
422 | $$ = make_op(O_F_OR_R, 4, $1, $3, Nullarg); } |
8d063cd8 |
423 | | sexpr ANDAND sexpr |
a687059c |
424 | { $$ = make_op(O_AND, 2, $1, $3, Nullarg); } |
8d063cd8 |
425 | | sexpr OROR sexpr |
a687059c |
426 | { $$ = make_op(O_OR, 2, $1, $3, Nullarg); } |
8d063cd8 |
427 | | sexpr '?' sexpr ':' sexpr |
a687059c |
428 | { $$ = make_op(O_COND_EXPR, 3, $1, $3, $5); } |
8d063cd8 |
429 | | sexpr MATCH sexpr |
430 | { $$ = mod_match(O_MATCH, $1, $3); } |
431 | | sexpr NMATCH sexpr |
432 | { $$ = mod_match(O_NMATCH, $1, $3); } |
8d063cd8 |
433 | | term |
434 | { $$ = $1; } |
435 | ; |
436 | |
437 | term : '-' term %prec UMINUS |
a687059c |
438 | { $$ = make_op(O_NEGATE, 1, $2, Nullarg, Nullarg); } |
439 | | '+' term %prec UMINUS |
440 | { $$ = $2; } |
8d063cd8 |
441 | | '!' term |
a687059c |
442 | { $$ = make_op(O_NOT, 1, $2, Nullarg, Nullarg); } |
8d063cd8 |
443 | | '~' term |
a687059c |
444 | { $$ = make_op(O_COMPLEMENT, 1, $2, Nullarg, Nullarg);} |
ae986130 |
445 | | term INC |
446 | { $$ = addflags(1, AF_POST|AF_UP, |
447 | l(make_op(O_ITEM,1,$1,Nullarg,Nullarg))); } |
448 | | term DEC |
449 | { $$ = addflags(1, AF_POST, |
450 | l(make_op(O_ITEM,1,$1,Nullarg,Nullarg))); } |
451 | | INC term |
452 | { $$ = addflags(1, AF_PRE|AF_UP, |
453 | l(make_op(O_ITEM,1,$2,Nullarg,Nullarg))); } |
454 | | DEC term |
455 | { $$ = addflags(1, AF_PRE, |
456 | l(make_op(O_ITEM,1,$2,Nullarg,Nullarg))); } |
378cc40b |
457 | | FILETEST WORD |
458 | { opargs[$1] = 0; /* force it special */ |
459 | $$ = make_op($1, 1, |
460 | stab2arg(A_STAB,stabent($2,TRUE)), |
a687059c |
461 | Nullarg, Nullarg); |
378cc40b |
462 | } |
463 | | FILETEST sexpr |
464 | { opargs[$1] = 1; |
a687059c |
465 | $$ = make_op($1, 1, $2, Nullarg, Nullarg); } |
378cc40b |
466 | | FILETEST |
467 | { opargs[$1] = ($1 != O_FTTTY); |
468 | $$ = make_op($1, 1, |
469 | stab2arg(A_STAB, |
a687059c |
470 | $1 == O_FTTTY?stabent("STDIN",TRUE):defstab), |
471 | Nullarg, Nullarg); } |
378cc40b |
472 | | LOCAL '(' expr ')' |
ae986130 |
473 | { $$ = l(localize(make_op(O_ASSIGN, 1, |
a687059c |
474 | localize(listish(make_list($3))), |
ae986130 |
475 | Nullarg,Nullarg))); } |
79a0689e |
476 | | '(' expr ',' ')' |
477 | { $$ = make_list(hide_ary($2)); } |
8d063cd8 |
478 | | '(' expr ')' |
479 | { $$ = make_list(hide_ary($2)); } |
480 | | '(' ')' |
481 | { $$ = make_list(Nullarg); } |
378cc40b |
482 | | DO sexpr %prec FILETEST |
d9d8d8de |
483 | { $$ = make_op(O_DOFILE,2,$2,Nullarg,Nullarg); |
a687059c |
484 | allstabs = TRUE;} |
8d063cd8 |
485 | | DO block %prec '(' |
486 | { $$ = cmd_to_arg($2); } |
487 | | REG %prec '(' |
378cc40b |
488 | { $$ = stab2arg(A_STAB,$1); } |
a687059c |
489 | | STAR %prec '(' |
490 | { $$ = stab2arg(A_STAR,$1); } |
8d063cd8 |
491 | | REG '[' expr ']' %prec '(' |
a687059c |
492 | { $$ = make_op(O_AELEM, 2, |
493 | stab2arg(A_STAB,aadd($1)), $3, Nullarg); } |
494 | | HSH %prec '(' |
495 | { $$ = make_op(O_HASH, 1, |
496 | stab2arg(A_STAB,$1), |
497 | Nullarg, Nullarg); } |
8d063cd8 |
498 | | ARY %prec '(' |
499 | { $$ = make_op(O_ARRAY, 1, |
378cc40b |
500 | stab2arg(A_STAB,$1), |
a687059c |
501 | Nullarg, Nullarg); } |
8d063cd8 |
502 | | REG '{' expr '}' %prec '(' |
a687059c |
503 | { $$ = make_op(O_HELEM, 2, |
504 | stab2arg(A_STAB,hadd($1)), |
505 | jmaybe($3), |
506 | Nullarg); } |
79a0689e |
507 | | '(' expr ')' '[' expr ']' %prec '(' |
508 | { $$ = make_op(O_LSLICE, 3, |
509 | Nullarg, |
510 | listish(make_list($5)), |
511 | listish(make_list($2))); } |
a687059c |
512 | | ARY '[' expr ']' %prec '(' |
513 | { $$ = make_op(O_ASLICE, 2, |
514 | stab2arg(A_STAB,aadd($1)), |
515 | listish(make_list($3)), |
516 | Nullarg); } |
517 | | ARY '{' expr '}' %prec '(' |
518 | { $$ = make_op(O_HSLICE, 2, |
519 | stab2arg(A_STAB,hadd($1)), |
520 | listish(make_list($3)), |
521 | Nullarg); } |
378cc40b |
522 | | DELETE REG '{' expr '}' %prec '(' |
523 | { $$ = make_op(O_DELETE, 2, |
a687059c |
524 | stab2arg(A_STAB,hadd($2)), |
525 | jmaybe($4), |
526 | Nullarg); } |
8d063cd8 |
527 | | ARYLEN %prec '(' |
378cc40b |
528 | { $$ = stab2arg(A_ARYLEN,$1); } |
8d063cd8 |
529 | | RSTRING %prec '(' |
530 | { $$ = $1; } |
531 | | PATTERN %prec '(' |
532 | { $$ = $1; } |
533 | | SUBST %prec '(' |
534 | { $$ = $1; } |
535 | | TRANS %prec '(' |
536 | { $$ = $1; } |
537 | | DO WORD '(' expr ')' |
a687059c |
538 | { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, |
539 | stab2arg(A_WORD,stabent($2,TRUE)), |
8d063cd8 |
540 | make_list($4), |
a687059c |
541 | Nullarg); Safefree($2); } |
542 | | AMPER WORD '(' expr ')' |
543 | { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, |
378cc40b |
544 | stab2arg(A_WORD,stabent($2,TRUE)), |
a687059c |
545 | make_list($4), |
546 | Nullarg); Safefree($2); } |
8d063cd8 |
547 | | DO WORD '(' ')' |
a687059c |
548 | { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, |
549 | stab2arg(A_WORD,stabent($2,TRUE)), |
8d063cd8 |
550 | make_list(Nullarg), |
a687059c |
551 | Nullarg); } |
552 | | AMPER WORD '(' ')' |
553 | { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, |
378cc40b |
554 | stab2arg(A_WORD,stabent($2,TRUE)), |
a687059c |
555 | make_list(Nullarg), |
556 | Nullarg); } |
557 | | AMPER WORD |
558 | { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, |
559 | stab2arg(A_WORD,stabent($2,TRUE)), |
560 | Nullarg, |
561 | Nullarg); } |
378cc40b |
562 | | DO REG '(' expr ')' |
a687059c |
563 | { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, |
564 | stab2arg(A_STAB,$2), |
378cc40b |
565 | make_list($4), |
a687059c |
566 | Nullarg); } |
567 | | AMPER REG '(' expr ')' |
568 | { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, |
378cc40b |
569 | stab2arg(A_STAB,$2), |
a687059c |
570 | make_list($4), |
571 | Nullarg); } |
378cc40b |
572 | | DO REG '(' ')' |
a687059c |
573 | { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, |
574 | stab2arg(A_STAB,$2), |
378cc40b |
575 | make_list(Nullarg), |
a687059c |
576 | Nullarg); } |
577 | | AMPER REG '(' ')' |
578 | { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, |
378cc40b |
579 | stab2arg(A_STAB,$2), |
a687059c |
580 | make_list(Nullarg), |
581 | Nullarg); } |
582 | | AMPER REG |
583 | { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, |
584 | stab2arg(A_STAB,$2), |
585 | Nullarg, |
586 | Nullarg); } |
8d063cd8 |
587 | | LOOPEX |
a687059c |
588 | { $$ = make_op($1,0,Nullarg,Nullarg,Nullarg); } |
8d063cd8 |
589 | | LOOPEX WORD |
590 | { $$ = make_op($1,1,cval_to_arg($2), |
a687059c |
591 | Nullarg,Nullarg); } |
8d063cd8 |
592 | | UNIOP |
d9d8d8de |
593 | { $$ = make_op($1,0,Nullarg,Nullarg,Nullarg); } |
8d063cd8 |
594 | | UNIOP sexpr |
d9d8d8de |
595 | { $$ = make_op($1,1,$2,Nullarg,Nullarg); } |
450a55e4 |
596 | | SSELECT |
a687059c |
597 | { $$ = make_op(O_SELECT, 0, Nullarg, Nullarg, Nullarg);} |
450a55e4 |
598 | | SSELECT '(' handle ')' |
a687059c |
599 | { $$ = make_op(O_SELECT, 1, $3, Nullarg, Nullarg); } |
450a55e4 |
600 | | SSELECT '(' sexpr csexpr csexpr csexpr ')' |
a687059c |
601 | { arg4 = $6; |
602 | $$ = make_op(O_SSELECT, 4, $3, $4, $5); } |
8d063cd8 |
603 | | OPEN WORD %prec '(' |
604 | { $$ = make_op(O_OPEN, 2, |
378cc40b |
605 | stab2arg(A_WORD,stabent($2,TRUE)), |
606 | stab2arg(A_STAB,stabent($2,TRUE)), |
a687059c |
607 | Nullarg); } |
8d063cd8 |
608 | | OPEN '(' WORD ')' |
609 | { $$ = make_op(O_OPEN, 2, |
378cc40b |
610 | stab2arg(A_WORD,stabent($3,TRUE)), |
611 | stab2arg(A_STAB,stabent($3,TRUE)), |
a687059c |
612 | Nullarg); } |
613 | | OPEN '(' handle cexpr ')' |
378cc40b |
614 | { $$ = make_op(O_OPEN, 2, |
615 | $3, |
a687059c |
616 | $4, Nullarg); } |
617 | | FILOP '(' handle ')' |
618 | { $$ = make_op($1, 1, |
378cc40b |
619 | $3, |
a687059c |
620 | Nullarg, Nullarg); } |
621 | | FILOP WORD |
622 | { $$ = make_op($1, 1, |
378cc40b |
623 | stab2arg(A_WORD,stabent($2,TRUE)), |
a687059c |
624 | Nullarg, Nullarg); |
625 | Safefree($2); } |
626 | | FILOP REG |
627 | { $$ = make_op($1, 1, |
628 | stab2arg(A_STAB,$2), |
629 | Nullarg, Nullarg); } |
630 | | FILOP '(' ')' |
631 | { $$ = make_op($1, 1, |
378cc40b |
632 | stab2arg(A_WORD,Nullstab), |
a687059c |
633 | Nullarg, Nullarg); } |
634 | | FILOP %prec '(' |
635 | { $$ = make_op($1, 0, |
636 | Nullarg, Nullarg, Nullarg); } |
637 | | FILOP2 '(' handle cexpr ')' |
638 | { $$ = make_op($1, 2, $3, $4, Nullarg); } |
639 | | FILOP3 '(' handle csexpr cexpr ')' |
663a0e37 |
640 | { $$ = make_op($1, 3, $3, $4, make_list($5)); } |
a687059c |
641 | | FILOP22 '(' handle ',' handle ')' |
642 | { $$ = make_op($1, 2, $3, $5, Nullarg); } |
643 | | FILOP4 '(' handle csexpr csexpr cexpr ')' |
644 | { arg4 = $6; $$ = make_op($1, 4, $3, $4, $5); } |
645 | | FILOP25 '(' handle ',' handle csexpr csexpr cexpr ')' |
646 | { arg4 = $7; arg5 = $8; |
647 | $$ = make_op($1, 5, $3, $5, $6); } |
648 | | PUSH '(' aryword cexpr ')' |
8d063cd8 |
649 | { $$ = make_op($1, 2, |
a687059c |
650 | $3, |
651 | make_list($4), |
652 | Nullarg); } |
653 | | POP aryword %prec '(' |
654 | { $$ = make_op(O_POP, 1, $2, Nullarg, Nullarg); } |
655 | | POP '(' aryword ')' |
656 | { $$ = make_op(O_POP, 1, $3, Nullarg, Nullarg); } |
657 | | SHIFT aryword %prec '(' |
658 | { $$ = make_op(O_SHIFT, 1, $2, Nullarg, Nullarg); } |
659 | | SHIFT '(' aryword ')' |
660 | { $$ = make_op(O_SHIFT, 1, $3, Nullarg, Nullarg); } |
8d063cd8 |
661 | | SHIFT %prec '(' |
662 | { $$ = make_op(O_SHIFT, 1, |
a687059c |
663 | stab2arg(A_STAB, |
664 | aadd(stabent(subline ? "_" : "ARGV", TRUE))), |
665 | Nullarg, Nullarg); } |
8d063cd8 |
666 | | SPLIT %prec '(' |
450a55e4 |
667 | {static char p[]="/\\s+/";char*o=bufend;bufend=p+5;(void)scanpat(p);bufend=o; |
a687059c |
668 | $$ = make_split(defstab,yylval.arg,Nullarg); } |
669 | | SPLIT '(' sexpr csexpr csexpr ')' |
670 | { $$ = mod_match(O_MATCH, $4, |
671 | make_split(defstab,$3,$5));} |
672 | | SPLIT '(' sexpr csexpr ')' |
673 | { $$ = mod_match(O_MATCH, $4, |
674 | make_split(defstab,$3,Nullarg) ); } |
8d063cd8 |
675 | | SPLIT '(' sexpr ')' |
676 | { $$ = mod_match(O_MATCH, |
378cc40b |
677 | stab2arg(A_STAB,defstab), |
a687059c |
678 | make_split(defstab,$3,Nullarg) ); } |
679 | | FLIST2 '(' sexpr cexpr ')' |
680 | { $$ = make_op($1, 2, |
8d063cd8 |
681 | $3, |
a687059c |
682 | listish(make_list($4)), |
683 | Nullarg); } |
684 | | FLIST '(' expr ')' |
685 | { $$ = make_op($1, 1, |
8d063cd8 |
686 | make_list($3), |
687 | Nullarg, |
a687059c |
688 | Nullarg); } |
689 | | LVALFUN sexpr %prec '(' |
690 | { $$ = l(make_op($1, 1, fixl($1,$2), |
691 | Nullarg, Nullarg)); } |
378cc40b |
692 | | LVALFUN |
693 | { $$ = l(make_op($1, 1, |
694 | stab2arg(A_STAB,defstab), |
a687059c |
695 | Nullarg, Nullarg)); } |
8d063cd8 |
696 | | FUNC0 |
a687059c |
697 | { $$ = make_op($1, 0, Nullarg, Nullarg, Nullarg); } |
ae986130 |
698 | | FUNC0 '(' ')' |
699 | { $$ = make_op($1, 0, Nullarg, Nullarg, Nullarg); } |
03a14243 |
700 | | FUNC1 '(' ')' |
d9d8d8de |
701 | { $$ = make_op($1, 0, Nullarg, Nullarg, Nullarg); } |
8d063cd8 |
702 | | FUNC1 '(' expr ')' |
d9d8d8de |
703 | { $$ = make_op($1, 1, $3, Nullarg, Nullarg); } |
a687059c |
704 | | FUNC2 '(' sexpr cexpr ')' |
705 | { $$ = make_op($1, 2, $3, $4, Nullarg); |
378cc40b |
706 | if ($1 == O_INDEX && $$[2].arg_type == A_SINGLE) |
a687059c |
707 | fbmcompile($$[2].arg_ptr.arg_str,0); } |
d9d8d8de |
708 | | FUNC2x '(' sexpr csexpr ')' |
709 | { $$ = make_op($1, 2, $3, $4, Nullarg); |
710 | if ($1 == O_INDEX && $$[2].arg_type == A_SINGLE) |
711 | fbmcompile($$[2].arg_ptr.arg_str,0); } |
712 | | FUNC2x '(' sexpr csexpr cexpr ')' |
713 | { $$ = make_op($1, 3, $3, $4, $5); |
714 | if ($1 == O_INDEX && $$[2].arg_type == A_SINGLE) |
715 | fbmcompile($$[2].arg_ptr.arg_str,0); } |
a687059c |
716 | | FUNC3 '(' sexpr csexpr cexpr ')' |
717 | { $$ = make_op($1, 3, $3, $4, $5); } |
d9d8d8de |
718 | | FUNC4 '(' sexpr csexpr csexpr cexpr ')' |
719 | { arg4 = $6; |
720 | $$ = make_op($1, 4, $3, $4, $5); } |
721 | | FUNC5 '(' sexpr csexpr csexpr csexpr cexpr ')' |
722 | { arg4 = $6; arg5 = $7; |
723 | $$ = make_op($1, 5, $3, $4, $5); } |
a687059c |
724 | | HSHFUN '(' hshword ')' |
725 | { $$ = make_op($1, 1, |
726 | $3, |
727 | Nullarg, |
728 | Nullarg); } |
729 | | HSHFUN hshword |
8d063cd8 |
730 | { $$ = make_op($1, 1, |
a687059c |
731 | $2, |
8d063cd8 |
732 | Nullarg, |
a687059c |
733 | Nullarg); } |
734 | | HSHFUN3 '(' hshword csexpr cexpr ')' |
735 | { $$ = make_op($1, 3, $3, $4, $5); } |
450a55e4 |
736 | | bareword |
378cc40b |
737 | | listop |
8d063cd8 |
738 | ; |
739 | |
378cc40b |
740 | listop : LISTOP |
8d063cd8 |
741 | { $$ = make_op($1,2, |
378cc40b |
742 | stab2arg(A_WORD,Nullstab), |
a687059c |
743 | stab2arg(A_STAB,defstab), |
744 | Nullarg); } |
378cc40b |
745 | | LISTOP expr |
a687059c |
746 | { $$ = make_op($1,2, |
378cc40b |
747 | stab2arg(A_WORD,Nullstab), |
a687059c |
748 | maybelistish($1,make_list($2)), |
749 | Nullarg); } |
378cc40b |
750 | | LISTOP WORD |
8d063cd8 |
751 | { $$ = make_op($1,2, |
378cc40b |
752 | stab2arg(A_WORD,stabent($2,TRUE)), |
a687059c |
753 | stab2arg(A_STAB,defstab), |
754 | Nullarg); } |
378cc40b |
755 | | LISTOP WORD expr |
a687059c |
756 | { $$ = make_op($1,2, |
378cc40b |
757 | stab2arg(A_WORD,stabent($2,TRUE)), |
a687059c |
758 | maybelistish($1,make_list($3)), |
759 | Nullarg); Safefree($2); } |
378cc40b |
760 | | LISTOP REG expr |
a687059c |
761 | { $$ = make_op($1,2, |
378cc40b |
762 | stab2arg(A_STAB,$2), |
a687059c |
763 | maybelistish($1,make_list($3)), |
764 | Nullarg); } |
765 | ; |
766 | |
767 | handle : WORD |
768 | { $$ = stab2arg(A_WORD,stabent($1,TRUE)); Safefree($1);} |
769 | | sexpr |
770 | ; |
771 | |
772 | aryword : WORD |
773 | { $$ = stab2arg(A_WORD,aadd(stabent($1,TRUE))); |
774 | Safefree($1); } |
775 | | ARY |
776 | { $$ = stab2arg(A_STAB,$1); } |
777 | ; |
778 | |
779 | hshword : WORD |
780 | { $$ = stab2arg(A_WORD,hadd(stabent($1,TRUE))); |
781 | Safefree($1); } |
782 | | HSH |
783 | { $$ = stab2arg(A_STAB,$1); } |
8d063cd8 |
784 | ; |
785 | |
450a55e4 |
786 | /* |
787 | * NOTE: The following entry must stay at the end of the file so that |
788 | * reduce/reduce conflicts resolve to it only if it's the only option. |
789 | */ |
790 | |
791 | bareword: WORD |
6eb13c3b |
792 | { char *s; |
450a55e4 |
793 | $$ = op_new(1); |
794 | $$->arg_type = O_ITEM; |
795 | $$[1].arg_type = A_SINGLE; |
796 | $$[1].arg_ptr.arg_str = str_make($1,0); |
6eb13c3b |
797 | for (s = $1; *s && islower(*s); s++) ; |
450a55e4 |
798 | if (dowarn && !*s) |
6eb13c3b |
799 | warn( |
800 | "\"%s\" may clash with future reserved word", |
801 | $1 ); |
450a55e4 |
802 | } |
803 | |
8d063cd8 |
804 | %% /* PROGRAM */ |