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1 | /* perly.y |
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2 | * |
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3 | * Copyright (c) 1991-2002, 2003, 2004, 2005, 2006 Larry Wall |
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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. |
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7 | * |
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8 | */ |
9 | |
10 | /* |
11 | * 'I see,' laughed Strider. 'I look foul and feel fair. Is that it? |
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12 | * All that is gold does not glitter, not all those who wander are lost.' |
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13 | * |
14 | * This file holds the grammar for the Perl language. If edited, you need |
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15 | * to run regen_perly.pl, which re-creates the files perly.h, perly.tab |
16 | * and perly.act which are derived from this. |
17 | * |
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18 | * Note that these derived files are included and compiled twice; once |
19 | * from perly.c, and once from madly.c. The second time, a number of MAD |
20 | * macros are defined, which compile in extra code that allows the parse |
21 | * tree to be accurately dumped. In particular: |
22 | * |
23 | * MAD defined if compiling madly.c |
24 | * DO_MAD(A) expands to A under madly.c, to null otherwise |
25 | * IF_MAD(a,b) expands to A under madly.c, to B otherwise |
26 | * TOKEN_GETMAD() expands to token_getmad() under madly.c, to null otherwise |
27 | * TOKEN_FREE() similarly |
28 | * OP_GETMAD() similarly |
29 | * IVAL(i) expands to (i)->tk_lval.ival or (i) |
30 | * PVAL(p) expands to (p)->tk_lval.pval or (p) |
31 | * |
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32 | * The main job of of this grammar is to call the various newFOO() |
33 | * functions in op.c to build a syntax tree of OP structs. |
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34 | * It relies on the lexer in toke.c to do the tokenizing. |
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35 | */ |
36 | |
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37 | /* Make the parser re-entrant. */ |
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38 | |
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39 | %pure_parser |
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40 | |
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41 | /* FIXME for MAD - is the new mintro on while and until important? */ |
42 | |
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43 | %start prog |
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44 | |
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45 | %union { |
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46 | I32 ival; |
47 | char *pval; |
48 | OP *opval; |
49 | GV *gvval; |
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50 | #ifdef PERL_IN_MADLY_C |
51 | TOKEN* p_tkval; |
52 | TOKEN* tkval; |
53 | #else |
54 | char *p_tkval; |
55 | I32 tkval; |
56 | #endif |
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57 | } |
58 | |
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59 | %token <tkval> '{' '}' '[' ']' '-' '+' '$' '@' '%' '*' '&' ';' |
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60 | |
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61 | %token <opval> WORD METHOD FUNCMETH THING PMFUNC PRIVATEREF |
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62 | %token <opval> FUNC0SUB UNIOPSUB LSTOPSUB |
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63 | %token <p_tkval> LABEL |
64 | %token <tkval> FORMAT SUB ANONSUB PACKAGE USE |
65 | %token <tkval> WHILE UNTIL IF UNLESS ELSE ELSIF CONTINUE FOR |
66 | %token <tkval> GIVEN WHEN DEFAULT |
67 | %token <tkval> LOOPEX DOTDOT |
68 | %token <tkval> FUNC0 FUNC1 FUNC UNIOP LSTOP |
69 | %token <tkval> RELOP EQOP MULOP ADDOP |
70 | %token <tkval> DOLSHARP DO HASHBRACK NOAMP |
71 | %token <tkval> LOCAL MY MYSUB REQUIRE |
72 | %token <tkval> COLONATTR |
73 | |
74 | %type <ival> prog progstart remember mremember savescope |
75 | %type <ival> startsub startanonsub startformsub |
76 | /* FIXME for MAD - are these two ival? */ |
77 | %type <ival> mydefsv mintro |
78 | |
79 | %type <opval> decl format subrout mysubrout package use peg |
80 | |
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81 | %type <opval> block mblock lineseq line loop cond else |
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82 | %type <opval> expr term subscripted scalar ary hsh arylen star amper sideff |
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83 | %type <opval> argexpr nexpr texpr iexpr mexpr mnexpr miexpr |
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84 | %type <opval> listexpr listexprcom indirob listop method |
85 | %type <opval> formname subname proto subbody cont my_scalar |
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86 | %type <opval> subattrlist myattrlist myattrterm myterm |
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87 | %type <opval> termbinop termunop anonymous termdo |
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88 | %type <opval> switch case |
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89 | %type <p_tkval> label |
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90 | |
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91 | %nonassoc <tkval> PREC_LOW |
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92 | %nonassoc LOOPEX |
93 | |
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94 | %left <tkval> OROP DOROP |
95 | %left <tkval> ANDOP |
96 | %right <tkval> NOTOP |
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97 | %nonassoc LSTOP LSTOPSUB |
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98 | %left <tkval> ',' |
99 | %right <tkval> ASSIGNOP |
100 | %right <tkval> '?' ':' |
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101 | %nonassoc DOTDOT |
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102 | %left <tkval> OROR DORDOR |
103 | %left <tkval> ANDAND |
104 | %left <tkval> BITOROP |
105 | %left <tkval> BITANDOP |
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106 | %nonassoc EQOP |
107 | %nonassoc RELOP |
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108 | %nonassoc UNIOP UNIOPSUB |
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109 | %nonassoc REQUIRE |
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110 | %left <tkval> SHIFTOP |
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111 | %left ADDOP |
112 | %left MULOP |
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113 | %left <tkval> MATCHOP |
114 | %right <tkval> '!' '~' UMINUS REFGEN |
115 | %right <tkval> POWOP |
116 | %nonassoc <tkval> PREINC PREDEC POSTINC POSTDEC |
117 | %left <tkval> ARROW |
118 | %nonassoc <tkval> ')' |
119 | %left <tkval> '(' |
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120 | %left '[' '{' |
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121 | |
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122 | %token <tkval> PEG |
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123 | |
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124 | %% /* RULES */ |
125 | |
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126 | /* The whole program */ |
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127 | prog : progstart |
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128 | /*CONTINUED*/ lineseq |
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129 | { $$ = $1; newPROG(block_end($1,$2)); } |
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130 | ; |
131 | |
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132 | /* An ordinary block */ |
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133 | block : '{' remember lineseq '}' |
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134 | { if (PL_copline > (line_t)IVAL($1)) |
135 | PL_copline = (line_t)IVAL($1); |
136 | $$ = block_end($2, $3); |
137 | TOKEN_GETMAD($1,$$,'{'); |
138 | TOKEN_GETMAD($4,$$,'}'); |
139 | } |
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140 | ; |
141 | |
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142 | remember: /* NULL */ /* start a full lexical scope */ |
143 | { $$ = block_start(TRUE); } |
144 | ; |
145 | |
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146 | mydefsv: /* NULL */ /* lexicalize $_ */ |
147 | { $$ = (I32) allocmy("$_"); } |
148 | ; |
149 | |
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150 | progstart: |
151 | { |
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152 | PL_expect = XSTATE; $$ = block_start(TRUE); |
153 | } |
154 | ; |
155 | |
156 | |
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157 | mblock : '{' mremember lineseq '}' |
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158 | { if (PL_copline > (line_t)IVAL($1)) |
159 | PL_copline = (line_t)IVAL($1); |
160 | $$ = block_end($2, $3); |
161 | TOKEN_GETMAD($1,$$,'{'); |
162 | TOKEN_GETMAD($4,$$,'}'); |
163 | } |
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164 | ; |
165 | |
166 | mremember: /* NULL */ /* start a partial lexical scope */ |
167 | { $$ = block_start(FALSE); } |
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168 | ; |
169 | |
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170 | savescope: /* NULL */ /* remember stack pos in case of error */ |
171 | { $$ = PL_savestack_ix; } |
172 | |
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173 | /* A collection of "lines" in the program */ |
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174 | lineseq : /* NULL */ |
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175 | { $$ = Nullop; } |
176 | | lineseq decl |
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177 | { |
178 | $$ = IF_MAD( |
179 | append_list(OP_LINESEQ, |
180 | (LISTOP*)$1, (LISTOP*)$2), |
181 | $1); |
182 | } |
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183 | | lineseq savescope line |
184 | { LEAVE_SCOPE($2); |
185 | $$ = append_list(OP_LINESEQ, |
186 | (LISTOP*)$1, (LISTOP*)$3); |
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187 | PL_pad_reset_pending = TRUE; |
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188 | if ($1 && $3) PL_hints |= HINT_BLOCK_SCOPE; } |
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189 | ; |
190 | |
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191 | /* A "line" in the program */ |
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192 | line : label cond |
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193 | { $$ = newSTATEOP(0, PVAL($1), $2); |
194 | TOKEN_GETMAD($1,((LISTOP*)$$)->op_first,'L'); } |
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195 | | loop /* loops add their own labels */ |
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196 | | switch /* ... and so do switches */ |
197 | { $$ = $1; } |
198 | | label case |
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199 | { $$ = newSTATEOP(0, PVAL($1), $2); } |
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200 | | label ';' |
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201 | { |
202 | if (PVAL($1)) { |
203 | $$ = newSTATEOP(0, PVAL($1), newOP(OP_NULL, 0)); |
204 | TOKEN_GETMAD($1,$$,'L'); |
205 | TOKEN_GETMAD($2,((LISTOP*)$$)->op_first,';'); |
206 | } |
207 | else { |
208 | $$ = IF_MAD( |
209 | newOP(OP_NULL, 0), |
210 | Nullop); |
211 | PL_copline = NOLINE; |
212 | TOKEN_FREE($1); |
213 | TOKEN_GETMAD($2,$$,';'); |
214 | } |
215 | PL_expect = XSTATE; |
216 | } |
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217 | | label sideff ';' |
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218 | { |
219 | $$ = newSTATEOP(0, PVAL($1), $2); |
220 | PL_expect = XSTATE; |
221 | DO_MAD( |
222 | /* sideff might already have a nexstate */ |
223 | OP* op = ((LISTOP*)$$)->op_first; |
224 | if (op) { |
225 | while (op->op_sibling && |
226 | op->op_sibling->op_type == OP_NEXTSTATE) |
227 | op = op->op_sibling; |
228 | token_getmad($1,op,'L'); |
229 | token_getmad($3,op,';'); |
230 | } |
231 | ) |
232 | } |
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233 | ; |
234 | |
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235 | /* An expression which may have a side-effect */ |
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236 | sideff : error |
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237 | { $$ = Nullop; } |
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238 | | expr |
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239 | { $$ = $1; } |
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240 | | expr IF expr |
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241 | { $$ = newLOGOP(OP_AND, 0, $3, $1); |
242 | TOKEN_GETMAD($2,$$,'i'); |
243 | } |
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244 | | expr UNLESS expr |
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245 | { $$ = newLOGOP(OP_OR, 0, $3, $1); |
246 | TOKEN_GETMAD($2,$$,'i'); |
247 | } |
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248 | | expr WHILE expr |
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249 | { $$ = newLOOPOP(OPf_PARENS, 1, scalar($3), $1); |
250 | TOKEN_GETMAD($2,$$,'w'); |
251 | } |
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252 | | expr UNTIL iexpr |
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253 | { $$ = newLOOPOP(OPf_PARENS, 1, $3, $1); |
254 | TOKEN_GETMAD($2,$$,'w'); |
255 | } |
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256 | | expr FOR expr |
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257 | { $$ = newFOROP(0, Nullch, (line_t)IVAL($2), |
258 | Nullop, $3, $1, Nullop); |
259 | TOKEN_GETMAD($2,((LISTOP*)$$)->op_first->op_sibling,'w'); |
260 | } |
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261 | ; |
262 | |
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263 | /* else and elsif blocks */ |
79072805 |
264 | else : /* NULL */ |
265 | { $$ = Nullop; } |
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266 | | ELSE mblock |
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267 | { ($2)->op_flags |= OPf_PARENS; $$ = scope($2); |
268 | TOKEN_GETMAD($1,$$,'o'); |
269 | } |
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270 | | ELSIF '(' mexpr ')' mblock else |
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271 | { PL_copline = (line_t)IVAL($1); |
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272 | $$ = newCONDOP(0, $3, scope($5), $6); |
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273 | PL_hints |= HINT_BLOCK_SCOPE; |
274 | TOKEN_GETMAD($1,$$,'I'); |
275 | TOKEN_GETMAD($2,$$,'('); |
276 | TOKEN_GETMAD($4,$$,')'); |
277 | } |
79072805 |
278 | ; |
279 | |
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280 | /* Real conditional expressions */ |
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281 | cond : IF '(' remember mexpr ')' mblock else |
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282 | { PL_copline = (line_t)IVAL($1); |
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283 | $$ = block_end($3, |
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284 | newCONDOP(0, $4, scope($6), $7)); |
285 | TOKEN_GETMAD($1,$$,'I'); |
286 | TOKEN_GETMAD($2,$$,'('); |
287 | TOKEN_GETMAD($5,$$,')'); |
288 | } |
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289 | | UNLESS '(' remember miexpr ')' mblock else |
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290 | { PL_copline = (line_t)IVAL($1); |
36477c24 |
291 | $$ = block_end($3, |
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292 | newCONDOP(0, $4, scope($6), $7)); |
293 | TOKEN_GETMAD($1,$$,'I'); |
294 | TOKEN_GETMAD($2,$$,'('); |
295 | TOKEN_GETMAD($5,$$,')'); |
296 | } |
79072805 |
297 | ; |
298 | |
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299 | /* Cases for a switch statement */ |
300 | case : WHEN '(' remember mexpr ')' mblock |
301 | { $$ = block_end($3, |
302 | newWHENOP($4, scope($6))); } |
303 | | DEFAULT block |
304 | { $$ = newWHENOP(0, scope($2)); } |
305 | ; |
306 | |
891be019 |
307 | /* Continue blocks */ |
79072805 |
308 | cont : /* NULL */ |
309 | { $$ = Nullop; } |
310 | | CONTINUE block |
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311 | { $$ = scope($2); |
312 | TOKEN_GETMAD($1,$$,'o'); |
313 | } |
79072805 |
314 | ; |
315 | |
891be019 |
316 | /* Loops: while, until, for, and a bare block */ |
a034e688 |
317 | loop : label WHILE '(' remember texpr ')' mintro mblock cont |
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318 | { OP *innerop; |
319 | PL_copline = (line_t)$2; |
36477c24 |
320 | $$ = block_end($4, |
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321 | newSTATEOP(0, PVAL($1), |
322 | innerop = newWHILEOP(0, 1, (LOOP*)Nullop, |
323 | IVAL($2), $5, $8, $9, $7))); |
324 | TOKEN_GETMAD($1,innerop,'L'); |
325 | TOKEN_GETMAD($2,innerop,'W'); |
326 | TOKEN_GETMAD($3,innerop,'('); |
327 | TOKEN_GETMAD($6,innerop,')'); |
328 | } |
329 | |
a034e688 |
330 | | label UNTIL '(' remember iexpr ')' mintro mblock cont |
f05e27e5 |
331 | { OP *innerop; |
332 | PL_copline = (line_t)$2; |
36477c24 |
333 | $$ = block_end($4, |
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334 | newSTATEOP(0, PVAL($1), |
335 | innerop = newWHILEOP(0, 1, (LOOP*)Nullop, |
336 | IVAL($2), $5, $8, $9, $7))); |
337 | TOKEN_GETMAD($1,innerop,'L'); |
338 | TOKEN_GETMAD($2,innerop,'W'); |
339 | TOKEN_GETMAD($3,innerop,'('); |
340 | TOKEN_GETMAD($6,innerop,')'); |
341 | } |
bbce6d69 |
342 | | label FOR MY remember my_scalar '(' mexpr ')' mblock cont |
f05e27e5 |
343 | { OP *innerop; |
344 | $$ = block_end($4, |
345 | innerop = newFOROP(0, PVAL($1), (line_t)IVAL($2), |
346 | $5, $7, $9, $10)); |
347 | TOKEN_GETMAD($1,((LISTOP*)innerop)->op_first,'L'); |
348 | TOKEN_GETMAD($2,((LISTOP*)innerop)->op_first->op_sibling,'W'); |
349 | TOKEN_GETMAD($3,((LISTOP*)innerop)->op_first->op_sibling,'d'); |
350 | TOKEN_GETMAD($6,((LISTOP*)innerop)->op_first->op_sibling,'('); |
351 | TOKEN_GETMAD($8,((LISTOP*)innerop)->op_first->op_sibling,')'); |
352 | } |
bbce6d69 |
353 | | label FOR scalar '(' remember mexpr ')' mblock cont |
f05e27e5 |
354 | { OP *innerop; |
355 | $$ = block_end($5, |
356 | innerop = newFOROP(0, PVAL($1), (line_t)IVAL($2), |
357 | mod($3, OP_ENTERLOOP), $6, $8, $9)); |
358 | TOKEN_GETMAD($1,((LISTOP*)innerop)->op_first,'L'); |
359 | TOKEN_GETMAD($2,((LISTOP*)innerop)->op_first->op_sibling,'W'); |
360 | TOKEN_GETMAD($4,((LISTOP*)innerop)->op_first->op_sibling,'('); |
361 | TOKEN_GETMAD($7,((LISTOP*)innerop)->op_first->op_sibling,')'); |
362 | } |
bbce6d69 |
363 | | label FOR '(' remember mexpr ')' mblock cont |
f05e27e5 |
364 | { OP *innerop; |
365 | $$ = block_end($4, |
366 | innerop = newFOROP(0, PVAL($1), (line_t)IVAL($2), |
367 | Nullop, $5, $7, $8)); |
368 | TOKEN_GETMAD($1,((LISTOP*)innerop)->op_first,'L'); |
369 | TOKEN_GETMAD($2,((LISTOP*)innerop)->op_first->op_sibling,'W'); |
370 | TOKEN_GETMAD($3,((LISTOP*)innerop)->op_first->op_sibling,'('); |
371 | TOKEN_GETMAD($6,((LISTOP*)innerop)->op_first->op_sibling,')'); |
372 | } |
a034e688 |
373 | | label FOR '(' remember mnexpr ';' texpr ';' mintro mnexpr ')' |
374 | mblock |
8d063cd8 |
375 | /* basically fake up an initialize-while lineseq */ |
36c66720 |
376 | { OP *forop; |
f05e27e5 |
377 | PL_copline = (line_t)IVAL($2); |
378 | forop = newSTATEOP(0, PVAL($1), |
36c66720 |
379 | newWHILEOP(0, 1, (LOOP*)Nullop, |
f05e27e5 |
380 | IVAL($2), scalar($7), |
a034e688 |
381 | $12, $10, $9)); |
f05e27e5 |
382 | #ifdef MAD |
383 | if (!$5) |
384 | $5 = newOP(OP_NULL, 0); |
385 | forop = newUNOP(OP_NULL, 0, append_elem(OP_LINESEQ, |
386 | newSTATEOP(0, |
387 | (($1)->tk_lval.pval |
388 | ?savepv(($1)->tk_lval.pval):Nullch), |
389 | $5), |
390 | forop)); |
391 | |
392 | token_getmad($2,forop,'3'); |
393 | token_getmad($3,forop,'('); |
394 | token_getmad($6,forop,'1'); |
395 | token_getmad($8,forop,'2'); |
396 | token_getmad($11,forop,')'); |
397 | token_getmad($1,forop,'L'); |
398 | #else |
36c66720 |
399 | if ($5) { |
400 | forop = append_elem(OP_LINESEQ, |
401 | newSTATEOP(0, ($1?savepv($1):Nullch), |
402 | $5), |
403 | forop); |
404 | } |
405 | |
f05e27e5 |
406 | |
407 | #endif |
36c66720 |
408 | $$ = block_end($4, forop); } |
79072805 |
409 | | label block cont /* a block is a loop that happens once */ |
f05e27e5 |
410 | { $$ = newSTATEOP(0, PVAL($1), |
fb73857a |
411 | newWHILEOP(0, 1, (LOOP*)Nullop, |
f05e27e5 |
412 | NOLINE, Nullop, $2, $3, 0)); |
413 | TOKEN_GETMAD($1,((LISTOP*)$$)->op_first,'L'); } |
8d063cd8 |
414 | ; |
415 | |
0d863452 |
416 | /* Switch blocks */ |
417 | switch : label GIVEN '(' remember mydefsv mexpr ')' mblock |
418 | { PL_copline = (line_t) $2; |
419 | $$ = block_end($4, |
f05e27e5 |
420 | newSTATEOP(0, PVAL($1), |
0d863452 |
421 | newGIVENOP($6, scope($8), |
422 | (PADOFFSET) $5) )); } |
423 | ; |
424 | |
a034e688 |
425 | /* determine whether there are any new my declarations */ |
426 | mintro : /* NULL */ |
427 | { $$ = (PL_min_intro_pending && |
428 | PL_max_intro_pending >= PL_min_intro_pending); |
429 | intro_my(); } |
430 | |
891be019 |
431 | /* Normal expression */ |
8d063cd8 |
432 | nexpr : /* NULL */ |
79072805 |
433 | { $$ = Nullop; } |
8d063cd8 |
434 | | sideff |
435 | ; |
436 | |
891be019 |
437 | /* Boolean expression */ |
8d063cd8 |
438 | texpr : /* NULL means true */ |
f05e27e5 |
439 | { YYSTYPE tmplval; |
440 | (void)scan_num("1", &tmplval); |
441 | $$ = tmplval.opval; } |
8d063cd8 |
442 | | expr |
443 | ; |
444 | |
891be019 |
445 | /* Inverted boolean expression */ |
55497cff |
446 | iexpr : expr |
447 | { $$ = invert(scalar($1)); } |
448 | ; |
449 | |
891be019 |
450 | /* Expression with its own lexical scope */ |
55497cff |
451 | mexpr : expr |
bbce6d69 |
452 | { $$ = $1; intro_my(); } |
453 | ; |
454 | |
455 | mnexpr : nexpr |
456 | { $$ = $1; intro_my(); } |
55497cff |
457 | ; |
458 | |
55497cff |
459 | miexpr : iexpr |
bbce6d69 |
460 | { $$ = $1; intro_my(); } |
55497cff |
461 | ; |
462 | |
891be019 |
463 | /* Optional "MAIN:"-style loop labels */ |
8d063cd8 |
464 | label : /* empty */ |
f05e27e5 |
465 | { |
466 | #ifdef MAD |
467 | YYSTYPE tmplval; |
468 | tmplval.pval = Nullch; |
469 | $$ = newTOKEN(OP_NULL, tmplval, 0); |
470 | #else |
471 | $$ = Nullch; |
472 | #endif |
473 | } |
32c2e4fb |
474 | | LABEL |
8d063cd8 |
475 | ; |
476 | |
f05e27e5 |
477 | /* Some kind of declaration - just hang on peg in the parse tree */ |
8d063cd8 |
478 | decl : format |
f05e27e5 |
479 | { $$ = $1; } |
8d063cd8 |
480 | | subrout |
f05e27e5 |
481 | { $$ = $1; } |
09bef843 |
482 | | mysubrout |
f05e27e5 |
483 | { $$ = $1; } |
a687059c |
484 | | package |
f05e27e5 |
485 | { $$ = $1; } |
a0d0e21e |
486 | | use |
f05e27e5 |
487 | { $$ = $1; } |
488 | |
489 | /* these two are only used by MAD */ |
490 | |
491 | | peg |
492 | { $$ = $1; } |
493 | ; |
494 | |
495 | peg : PEG |
496 | { $$ = newOP(OP_NULL,0); |
497 | TOKEN_GETMAD($1,$$,'p'); |
498 | } |
8d063cd8 |
499 | ; |
500 | |
44a8e56a |
501 | format : FORMAT startformsub formname block |
a8ff2fa6 |
502 | { SvREFCNT_inc(PL_compcv); |
f05e27e5 |
503 | #ifdef MAD |
504 | $$ = newFORM($2, $3, $4); |
505 | prepend_madprops($1->tk_mad, $$, 'F'); |
506 | $1->tk_mad = 0; |
507 | token_free($1); |
508 | #else |
509 | newFORM($2, $3, $4); |
510 | #endif |
511 | } |
44a8e56a |
512 | ; |
513 | |
514 | formname: WORD { $$ = $1; } |
515 | | /* NULL */ { $$ = Nullop; } |
8d063cd8 |
516 | ; |
517 | |
891be019 |
518 | /* Unimplemented "my sub foo { }" */ |
09bef843 |
519 | mysubrout: MYSUB startsub subname proto subattrlist subbody |
a8ff2fa6 |
520 | { SvREFCNT_inc(PL_compcv); |
f05e27e5 |
521 | #ifdef MAD |
522 | $$ = newMYSUB($2, $3, $4, $5, $6); |
523 | token_getmad($1,$$,'d'); |
524 | #else |
525 | newMYSUB($2, $3, $4, $5, $6); |
526 | #endif |
527 | } |
09bef843 |
528 | ; |
529 | |
891be019 |
530 | /* Subroutine definition */ |
09bef843 |
531 | subrout : SUB startsub subname proto subattrlist subbody |
a8ff2fa6 |
532 | { SvREFCNT_inc(PL_compcv); |
f05e27e5 |
533 | #ifdef MAD |
534 | OP* o = newSVOP(OP_ANONCODE, 0, |
535 | (SV*)newATTRSUB($2, $3, $4, $5, $6)); |
536 | $$ = newOP(OP_NULL,0); |
537 | op_getmad(o,$$,'&'); |
538 | op_getmad($3,$$,'n'); |
539 | op_getmad($4,$$,'s'); |
540 | op_getmad($5,$$,'a'); |
541 | token_getmad($1,$$,'d'); |
542 | append_madprops($6->op_madprop, $$, 0); |
543 | $6->op_madprop = 0; |
544 | #else |
545 | newATTRSUB($2, $3, $4, $5, $6); |
546 | $$ = Nullop; |
547 | #endif |
548 | } |
28757baa |
549 | ; |
550 | |
fa83b5b6 |
551 | startsub: /* NULL */ /* start a regular subroutine scope */ |
a8ff2fa6 |
552 | { $$ = start_subparse(FALSE, 0); |
553 | SAVEFREESV(PL_compcv); } |
f05e27e5 |
554 | |
28757baa |
555 | ; |
556 | |
557 | startanonsub: /* NULL */ /* start an anonymous subroutine scope */ |
a8ff2fa6 |
558 | { $$ = start_subparse(FALSE, CVf_ANON); |
559 | SAVEFREESV(PL_compcv); } |
28757baa |
560 | ; |
561 | |
44a8e56a |
562 | startformsub: /* NULL */ /* start a format subroutine scope */ |
a8ff2fa6 |
563 | { $$ = start_subparse(TRUE, 0); |
564 | SAVEFREESV(PL_compcv); } |
44a8e56a |
565 | ; |
566 | |
891be019 |
567 | /* Name of a subroutine - must be a bareword, could be special */ |
2596d9fe |
568 | subname : WORD { const char *const name = SvPV_nolen_const(((SVOP*)$1)->op_sv); |
e858de61 |
569 | if (strEQ(name, "BEGIN") || strEQ(name, "END") |
3c10abe3 |
570 | || strEQ(name, "INIT") || strEQ(name, "CHECK") |
571 | || strEQ(name, "UNITCHECK")) |
1aff0e91 |
572 | CvSPECIAL_on(PL_compcv); |
28757baa |
573 | $$ = $1; } |
a0d0e21e |
574 | ; |
575 | |
891be019 |
576 | /* Subroutine prototype */ |
4633a7c4 |
577 | proto : /* NULL */ |
578 | { $$ = Nullop; } |
579 | | THING |
580 | ; |
28757baa |
581 | |
891be019 |
582 | /* Optional list of subroutine attributes */ |
09bef843 |
583 | subattrlist: /* NULL */ |
584 | { $$ = Nullop; } |
585 | | COLONATTR THING |
f05e27e5 |
586 | { $$ = $2; |
587 | TOKEN_GETMAD($1,$$,':'); |
588 | } |
09bef843 |
589 | | COLONATTR |
f05e27e5 |
590 | { $$ = IF_MAD( |
591 | newOP(OP_NULL, 0), |
592 | Nullop |
593 | ); |
594 | TOKEN_GETMAD($1,$$,':'); |
595 | } |
09bef843 |
596 | ; |
597 | |
891be019 |
598 | /* List of attributes for a "my" variable declaration */ |
09bef843 |
599 | myattrlist: COLONATTR THING |
f05e27e5 |
600 | { $$ = $2; |
601 | TOKEN_GETMAD($1,$$,':'); |
602 | } |
09bef843 |
603 | | COLONATTR |
f05e27e5 |
604 | { $$ = IF_MAD( |
605 | newOP(OP_NULL, 0), |
606 | Nullop |
607 | ); |
608 | TOKEN_GETMAD($1,$$,':'); |
609 | } |
09bef843 |
610 | ; |
611 | |
891be019 |
612 | /* Subroutine body - either null or a block */ |
28757baa |
613 | subbody : block { $$ = $1; } |
f05e27e5 |
614 | | ';' { $$ = IF_MAD( |
615 | newOP(OP_NULL,0), |
616 | Nullop |
617 | ); |
618 | PL_expect = XSTATE; |
619 | TOKEN_GETMAD($1,$$,';'); |
620 | } |
8d063cd8 |
621 | ; |
622 | |
a687059c |
623 | package : PACKAGE WORD ';' |
f05e27e5 |
624 | { |
625 | #ifdef MAD |
626 | $$ = package($2); |
627 | token_getmad($1,$$,'o'); |
628 | token_getmad($3,$$,';'); |
629 | #else |
630 | package($2); |
631 | #endif |
632 | } |
a687059c |
633 | ; |
634 | |
28757baa |
635 | use : USE startsub |
1aff0e91 |
636 | { CvSPECIAL_on(PL_compcv); /* It's a BEGIN {} */ } |
28757baa |
637 | WORD WORD listexpr ';' |
f05e27e5 |
638 | { SvREFCNT_inc(PL_compcv); |
639 | #ifdef MAD |
640 | $$ = utilize(IVAL($1), $2, $4, $5, $6); |
641 | token_getmad($1,$$,'o'); |
642 | token_getmad($7,$$,';'); |
643 | if (PL_rsfp_filters && AvFILLp(PL_rsfp_filters) >= 0) |
644 | append_madprops(newMADPROP('!', MAD_PV, "", 0), $$, 0); |
645 | #else |
646 | utilize(IVAL($1), $2, $4, $5, $6); |
647 | #endif |
648 | } |
85e6fe83 |
649 | ; |
650 | |
891be019 |
651 | /* Ordinary expressions; logical combinations */ |
a0d0e21e |
652 | expr : expr ANDOP expr |
f05e27e5 |
653 | { $$ = newLOGOP(OP_AND, 0, $1, $3); |
654 | TOKEN_GETMAD($2,$$,'o'); |
655 | } |
a0d0e21e |
656 | | expr OROP expr |
f05e27e5 |
657 | { $$ = newLOGOP(IVAL($2), 0, $1, $3); |
658 | TOKEN_GETMAD($2,$$,'o'); |
659 | } |
c963b151 |
660 | | expr DOROP expr |
f05e27e5 |
661 | { $$ = newLOGOP(OP_DOR, 0, $1, $3); |
662 | TOKEN_GETMAD($2,$$,'o'); |
663 | } |
fad39ff1 |
664 | | argexpr %prec PREC_LOW |
a0d0e21e |
665 | ; |
666 | |
891be019 |
667 | /* Expressions are a list of terms joined by commas */ |
a0d0e21e |
668 | argexpr : argexpr ',' |
f05e27e5 |
669 | { |
670 | #ifdef MAD |
671 | OP* op = newNULLLIST(); |
672 | token_getmad($2,op,','); |
673 | $$ = append_elem(OP_LIST, $1, op); |
674 | #else |
675 | $$ = $1; |
676 | #endif |
677 | } |
a0d0e21e |
678 | | argexpr ',' term |
f05e27e5 |
679 | { |
680 | DO_MAD( |
681 | $3 = newUNOP(OP_NULL, 0, $3); |
682 | token_getmad($2,$3,','); |
683 | ) |
684 | $$ = append_elem(OP_LIST, $1, $3); |
685 | } |
fad39ff1 |
686 | | term %prec PREC_LOW |
8d063cd8 |
687 | ; |
688 | |
891be019 |
689 | /* List operators */ |
ad4673e5 |
690 | listop : LSTOP indirob argexpr /* map {...} @args or print $fh @args */ |
f05e27e5 |
691 | { $$ = convert(IVAL($1), OPf_STACKED, |
692 | prepend_elem(OP_LIST, newGVREF(IVAL($1),$2), $3) ); |
693 | TOKEN_GETMAD($1,$$,'o'); |
694 | } |
891be019 |
695 | | FUNC '(' indirob expr ')' /* print ($fh @args */ |
f05e27e5 |
696 | { $$ = convert(IVAL($1), OPf_STACKED, |
697 | prepend_elem(OP_LIST, newGVREF(IVAL($1),$3), $4) ); |
698 | TOKEN_GETMAD($1,$$,'o'); |
699 | TOKEN_GETMAD($2,$$,'('); |
700 | TOKEN_GETMAD($5,$$,')'); |
701 | } |
891be019 |
702 | | term ARROW method '(' listexprcom ')' /* $foo->bar(list) */ |
4633a7c4 |
703 | { $$ = convert(OP_ENTERSUB, OPf_STACKED, |
a0d0e21e |
704 | append_elem(OP_LIST, |
55497cff |
705 | prepend_elem(OP_LIST, scalar($1), $5), |
f05e27e5 |
706 | newUNOP(OP_METHOD, 0, $3))); |
707 | TOKEN_GETMAD($2,$$,'A'); |
708 | TOKEN_GETMAD($4,$$,'('); |
709 | TOKEN_GETMAD($6,$$,')'); |
710 | } |
891be019 |
711 | | term ARROW method /* $foo->bar */ |
b1524f17 |
712 | { $$ = convert(OP_ENTERSUB, OPf_STACKED, |
713 | append_elem(OP_LIST, scalar($1), |
f05e27e5 |
714 | newUNOP(OP_METHOD, 0, $3))); |
715 | TOKEN_GETMAD($2,$$,'A'); |
716 | } |
891be019 |
717 | | METHOD indirob listexpr /* new Class @args */ |
4633a7c4 |
718 | { $$ = convert(OP_ENTERSUB, OPf_STACKED, |
a0d0e21e |
719 | append_elem(OP_LIST, |
4633a7c4 |
720 | prepend_elem(OP_LIST, $2, $3), |
f05e27e5 |
721 | newUNOP(OP_METHOD, 0, $1))); |
722 | } |
891be019 |
723 | | FUNCMETH indirob '(' listexprcom ')' /* method $object (@args) */ |
4633a7c4 |
724 | { $$ = convert(OP_ENTERSUB, OPf_STACKED, |
a0d0e21e |
725 | append_elem(OP_LIST, |
4633a7c4 |
726 | prepend_elem(OP_LIST, $2, $4), |
f05e27e5 |
727 | newUNOP(OP_METHOD, 0, $1))); |
728 | TOKEN_GETMAD($3,$$,'('); |
729 | TOKEN_GETMAD($5,$$,')'); |
730 | } |
891be019 |
731 | | LSTOP listexpr /* print @args */ |
f05e27e5 |
732 | { $$ = convert(IVAL($1), 0, $2); |
733 | TOKEN_GETMAD($1,$$,'o'); |
734 | } |
891be019 |
735 | | FUNC '(' listexprcom ')' /* print (@args) */ |
f05e27e5 |
736 | { $$ = convert(IVAL($1), 0, $3); |
737 | TOKEN_GETMAD($1,$$,'o'); |
738 | TOKEN_GETMAD($2,$$,'('); |
739 | TOKEN_GETMAD($4,$$,')'); |
740 | } |
ad4673e5 |
741 | | LSTOPSUB startanonsub block /* sub f(&@); f { foo } ... */ |
a8ff2fa6 |
742 | { SvREFCNT_inc(PL_compcv); |
743 | $3 = newANONATTRSUB($2, 0, Nullop, $3); } |
891be019 |
744 | listexpr %prec LSTOP /* ... @bar */ |
4633a7c4 |
745 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
28757baa |
746 | append_elem(OP_LIST, |
f05e27e5 |
747 | prepend_elem(OP_LIST, $3, $5), $1)); |
748 | } |
a687059c |
749 | ; |
750 | |
891be019 |
751 | /* Names of methods. May use $object->$methodname */ |
a0d0e21e |
752 | method : METHOD |
753 | | scalar |
754 | ; |
755 | |
891be019 |
756 | /* Some kind of subscripted expression */ |
757 | subscripted: star '{' expr ';' '}' /* *main::{something} */ |
758 | /* In this and all the hash accessors, ';' is |
759 | * provided by the tokeniser */ |
264e1af3 |
760 | { $$ = newBINOP(OP_GELEM, 0, $1, scalar($3)); |
f05e27e5 |
761 | PL_expect = XOPERATOR; |
762 | TOKEN_GETMAD($2,$$,'{'); |
763 | TOKEN_GETMAD($4,$$,';'); |
764 | TOKEN_GETMAD($5,$$,'}'); |
765 | } |
891be019 |
766 | | scalar '[' expr ']' /* $array[$element] */ |
f05e27e5 |
767 | { $$ = newBINOP(OP_AELEM, 0, oopsAV($1), scalar($3)); |
768 | TOKEN_GETMAD($2,$$,'['); |
769 | TOKEN_GETMAD($4,$$,']'); |
770 | } |
891be019 |
771 | | term ARROW '[' expr ']' /* somearef->[$element] */ |
fad39ff1 |
772 | { $$ = newBINOP(OP_AELEM, 0, |
773 | ref(newAVREF($1),OP_RV2AV), |
f05e27e5 |
774 | scalar($4)); |
775 | TOKEN_GETMAD($2,$$,'a'); |
776 | TOKEN_GETMAD($3,$$,'['); |
777 | TOKEN_GETMAD($5,$$,']'); |
778 | } |
891be019 |
779 | | subscripted '[' expr ']' /* $foo->[$bar]->[$baz] */ |
fad39ff1 |
780 | { $$ = newBINOP(OP_AELEM, 0, |
781 | ref(newAVREF($1),OP_RV2AV), |
f05e27e5 |
782 | scalar($3)); |
783 | TOKEN_GETMAD($2,$$,'['); |
784 | TOKEN_GETMAD($4,$$,']'); |
785 | } |
891be019 |
786 | | scalar '{' expr ';' '}' /* $foo->{bar();} */ |
fad39ff1 |
787 | { $$ = newBINOP(OP_HELEM, 0, oopsHV($1), jmaybe($3)); |
f05e27e5 |
788 | PL_expect = XOPERATOR; |
789 | TOKEN_GETMAD($2,$$,'{'); |
790 | TOKEN_GETMAD($4,$$,';'); |
791 | TOKEN_GETMAD($5,$$,'}'); |
792 | } |
891be019 |
793 | | term ARROW '{' expr ';' '}' /* somehref->{bar();} */ |
fad39ff1 |
794 | { $$ = newBINOP(OP_HELEM, 0, |
795 | ref(newHVREF($1),OP_RV2HV), |
796 | jmaybe($4)); |
f05e27e5 |
797 | PL_expect = XOPERATOR; |
798 | TOKEN_GETMAD($2,$$,'a'); |
799 | TOKEN_GETMAD($3,$$,'{'); |
800 | TOKEN_GETMAD($5,$$,';'); |
801 | TOKEN_GETMAD($6,$$,'}'); |
802 | } |
891be019 |
803 | | subscripted '{' expr ';' '}' /* $foo->[bar]->{baz;} */ |
fad39ff1 |
804 | { $$ = newBINOP(OP_HELEM, 0, |
805 | ref(newHVREF($1),OP_RV2HV), |
806 | jmaybe($3)); |
f05e27e5 |
807 | PL_expect = XOPERATOR; |
808 | TOKEN_GETMAD($2,$$,'{'); |
809 | TOKEN_GETMAD($4,$$,';'); |
810 | TOKEN_GETMAD($5,$$,'}'); |
811 | } |
891be019 |
812 | | term ARROW '(' ')' /* $subref->() */ |
fad39ff1 |
813 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
f05e27e5 |
814 | newCVREF(0, scalar($1))); |
815 | TOKEN_GETMAD($2,$$,'a'); |
816 | TOKEN_GETMAD($3,$$,'('); |
817 | TOKEN_GETMAD($4,$$,')'); |
818 | } |
891be019 |
819 | | term ARROW '(' expr ')' /* $subref->(@args) */ |
fad39ff1 |
820 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
821 | append_elem(OP_LIST, $4, |
f05e27e5 |
822 | newCVREF(0, scalar($1)))); |
823 | TOKEN_GETMAD($2,$$,'a'); |
824 | TOKEN_GETMAD($3,$$,'('); |
825 | TOKEN_GETMAD($5,$$,')'); |
826 | } |
fad39ff1 |
827 | |
891be019 |
828 | | subscripted '(' expr ')' /* $foo->{bar}->(@args) */ |
fad39ff1 |
829 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
830 | append_elem(OP_LIST, $3, |
f05e27e5 |
831 | newCVREF(0, scalar($1)))); |
832 | TOKEN_GETMAD($2,$$,'('); |
833 | TOKEN_GETMAD($4,$$,')'); |
834 | } |
891be019 |
835 | | subscripted '(' ')' /* $foo->{bar}->() */ |
fad39ff1 |
836 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
f05e27e5 |
837 | newCVREF(0, scalar($1))); |
838 | TOKEN_GETMAD($2,$$,'('); |
839 | TOKEN_GETMAD($3,$$,')'); |
840 | } |
9a9798c2 |
841 | | '(' expr ')' '[' expr ']' /* list slice */ |
f05e27e5 |
842 | { $$ = newSLICEOP(0, $5, $2); |
843 | TOKEN_GETMAD($1,$$,'('); |
844 | TOKEN_GETMAD($3,$$,')'); |
845 | TOKEN_GETMAD($4,$$,'['); |
846 | TOKEN_GETMAD($6,$$,']'); |
847 | } |
9a9798c2 |
848 | | '(' ')' '[' expr ']' /* empty list slice! */ |
f05e27e5 |
849 | { $$ = newSLICEOP(0, $4, Nullop); |
850 | TOKEN_GETMAD($1,$$,'('); |
851 | TOKEN_GETMAD($2,$$,')'); |
852 | TOKEN_GETMAD($3,$$,'['); |
853 | TOKEN_GETMAD($5,$$,']'); |
854 | } |
891be019 |
855 | ; |
fad39ff1 |
856 | |
891be019 |
857 | /* Binary operators between terms */ |
f05e27e5 |
858 | termbinop: term ASSIGNOP term /* $x = $y */ |
859 | { $$ = newASSIGNOP(OPf_STACKED, $1, IVAL($2), $3); |
860 | TOKEN_GETMAD($2,$$,'o'); |
861 | } |
891be019 |
862 | | term POWOP term /* $x ** $y */ |
f05e27e5 |
863 | { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3)); |
864 | TOKEN_GETMAD($2,$$,'o'); |
865 | } |
891be019 |
866 | | term MULOP term /* $x * $y, $x x $y */ |
f05e27e5 |
867 | { if (IVAL($2) != OP_REPEAT) |
79072805 |
868 | scalar($1); |
f05e27e5 |
869 | $$ = newBINOP(IVAL($2), 0, $1, scalar($3)); |
870 | TOKEN_GETMAD($2,$$,'o'); |
871 | } |
891be019 |
872 | | term ADDOP term /* $x + $y */ |
f05e27e5 |
873 | { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3)); |
874 | TOKEN_GETMAD($2,$$,'o'); |
875 | } |
891be019 |
876 | | term SHIFTOP term /* $x >> $y, $x << $y */ |
f05e27e5 |
877 | { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3)); |
878 | TOKEN_GETMAD($2,$$,'o'); |
879 | } |
891be019 |
880 | | term RELOP term /* $x > $y, etc. */ |
f05e27e5 |
881 | { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3)); |
882 | TOKEN_GETMAD($2,$$,'o'); |
883 | } |
891be019 |
884 | | term EQOP term /* $x == $y, $x eq $y */ |
f05e27e5 |
885 | { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3)); |
886 | TOKEN_GETMAD($2,$$,'o'); |
887 | } |
891be019 |
888 | | term BITANDOP term /* $x & $y */ |
f05e27e5 |
889 | { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3)); |
890 | TOKEN_GETMAD($2,$$,'o'); |
891 | } |
891be019 |
892 | | term BITOROP term /* $x | $y */ |
f05e27e5 |
893 | { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3)); |
894 | TOKEN_GETMAD($2,$$,'o'); |
895 | } |
891be019 |
896 | | term DOTDOT term /* $x..$y, $x...$y */ |
f05e27e5 |
897 | { |
898 | $$ = newRANGE(IVAL($2), scalar($1), scalar($3)); |
899 | DO_MAD( |
900 | UNOP *op; |
901 | op = (UNOP*)$$; |
902 | op = (UNOP*)op->op_first; /* get to flop */ |
903 | op = (UNOP*)op->op_first; /* get to flip */ |
904 | op = (UNOP*)op->op_first; /* get to range */ |
905 | token_getmad($2,(OP*)op,'o'); |
906 | ) |
907 | } |
891be019 |
908 | | term ANDAND term /* $x && $y */ |
f05e27e5 |
909 | { $$ = newLOGOP(OP_AND, 0, $1, $3); |
910 | TOKEN_GETMAD($2,$$,'o'); |
911 | } |
891be019 |
912 | | term OROR term /* $x || $y */ |
f05e27e5 |
913 | { $$ = newLOGOP(OP_OR, 0, $1, $3); |
914 | TOKEN_GETMAD($2,$$,'o'); |
915 | } |
c963b151 |
916 | | term DORDOR term /* $x // $y */ |
f05e27e5 |
917 | { $$ = newLOGOP(OP_DOR, 0, $1, $3); |
918 | TOKEN_GETMAD($2,$$,'o'); |
919 | } |
891be019 |
920 | | term MATCHOP term /* $x =~ /$y/ */ |
f05e27e5 |
921 | { $$ = bind_match(IVAL($2), $1, $3); |
922 | TOKEN_GETMAD($2, |
923 | ($$->op_type == OP_NOT |
924 | ? ((UNOP*)$$)->op_first : $$), |
925 | '~'); |
926 | } |
891be019 |
927 | ; |
8d063cd8 |
928 | |
891be019 |
929 | /* Unary operators and terms */ |
930 | termunop : '-' term %prec UMINUS /* -$x */ |
f05e27e5 |
931 | { $$ = newUNOP(OP_NEGATE, 0, scalar($2)); |
932 | TOKEN_GETMAD($1,$$,'o'); |
933 | } |
891be019 |
934 | | '+' term %prec UMINUS /* +$x */ |
f05e27e5 |
935 | { $$ = IF_MAD( |
936 | newUNOP(OP_NULL, 0, $2), |
937 | $2 |
938 | ); |
939 | TOKEN_GETMAD($1,$$,'+'); |
940 | } |
891be019 |
941 | | '!' term /* !$x */ |
f05e27e5 |
942 | { $$ = newUNOP(OP_NOT, 0, scalar($2)); |
943 | TOKEN_GETMAD($1,$$,'o'); |
944 | } |
891be019 |
945 | | '~' term /* ~$x */ |
f05e27e5 |
946 | { $$ = newUNOP(OP_COMPLEMENT, 0, scalar($2)); |
947 | TOKEN_GETMAD($1,$$,'o'); |
948 | } |
891be019 |
949 | | term POSTINC /* $x++ */ |
79072805 |
950 | { $$ = newUNOP(OP_POSTINC, 0, |
f05e27e5 |
951 | mod(scalar($1), OP_POSTINC)); |
952 | TOKEN_GETMAD($2,$$,'o'); |
953 | } |
891be019 |
954 | | term POSTDEC /* $x-- */ |
79072805 |
955 | { $$ = newUNOP(OP_POSTDEC, 0, |
f05e27e5 |
956 | mod(scalar($1), OP_POSTDEC)); |
957 | TOKEN_GETMAD($2,$$,'o'); |
958 | } |
891be019 |
959 | | PREINC term /* ++$x */ |
79072805 |
960 | { $$ = newUNOP(OP_PREINC, 0, |
f05e27e5 |
961 | mod(scalar($2), OP_PREINC)); |
962 | TOKEN_GETMAD($1,$$,'o'); |
963 | } |
891be019 |
964 | | PREDEC term /* --$x */ |
79072805 |
965 | { $$ = newUNOP(OP_PREDEC, 0, |
f05e27e5 |
966 | mod(scalar($2), OP_PREDEC)); |
967 | TOKEN_GETMAD($1,$$,'o'); |
968 | } |
891be019 |
969 | |
970 | ; |
971 | |
972 | /* Constructors for anonymous data */ |
973 | anonymous: '[' expr ']' |
f05e27e5 |
974 | { $$ = newANONLIST($2); |
975 | TOKEN_GETMAD($1,$$,'['); |
976 | TOKEN_GETMAD($3,$$,']'); |
977 | } |
891be019 |
978 | | '[' ']' |
f05e27e5 |
979 | { $$ = newANONLIST(Nullop); |
980 | TOKEN_GETMAD($1,$$,'['); |
981 | TOKEN_GETMAD($2,$$,']'); |
982 | } |
891be019 |
983 | | HASHBRACK expr ';' '}' %prec '(' /* { foo => "Bar" } */ |
f05e27e5 |
984 | { $$ = newANONHASH($2); |
985 | TOKEN_GETMAD($1,$$,'{'); |
986 | TOKEN_GETMAD($3,$$,';'); |
987 | TOKEN_GETMAD($4,$$,'}'); |
988 | } |
891be019 |
989 | | HASHBRACK ';' '}' %prec '(' /* { } (';' by tokener) */ |
f05e27e5 |
990 | { $$ = newANONHASH(Nullop); |
991 | TOKEN_GETMAD($1,$$,'{'); |
992 | TOKEN_GETMAD($2,$$,';'); |
993 | TOKEN_GETMAD($3,$$,'}'); |
994 | } |
891be019 |
995 | | ANONSUB startanonsub proto subattrlist block %prec '(' |
a8ff2fa6 |
996 | { SvREFCNT_inc(PL_compcv); |
f05e27e5 |
997 | $$ = newANONATTRSUB($2, $3, $4, $5); |
998 | TOKEN_GETMAD($1,$$,'o'); |
999 | OP_GETMAD($3,$$,'s'); |
1000 | OP_GETMAD($4,$$,'a'); |
1001 | } |
891be019 |
1002 | |
1003 | ; |
1004 | |
1005 | /* Things called with "do" */ |
1006 | termdo : DO term %prec UNIOP /* do $filename */ |
f05e27e5 |
1007 | { $$ = dofile($2, $1); |
1008 | TOKEN_GETMAD($1,$$,'o'); |
1009 | } |
891be019 |
1010 | | DO block %prec '(' /* do { code */ |
f05e27e5 |
1011 | { $$ = newUNOP(OP_NULL, OPf_SPECIAL, scope($2)); |
1012 | TOKEN_GETMAD($1,$$,'D'); |
1013 | } |
891be019 |
1014 | | DO WORD '(' ')' /* do somesub() */ |
1015 | { $$ = newUNOP(OP_ENTERSUB, |
1016 | OPf_SPECIAL|OPf_STACKED, |
1017 | prepend_elem(OP_LIST, |
1018 | scalar(newCVREF( |
1019 | (OPpENTERSUB_AMPER<<8), |
1020 | scalar($2) |
f05e27e5 |
1021 | )),Nullop)); dep(); |
1022 | TOKEN_GETMAD($1,$$,'o'); |
1023 | TOKEN_GETMAD($3,$$,'('); |
1024 | TOKEN_GETMAD($4,$$,')'); |
1025 | } |
891be019 |
1026 | | DO WORD '(' expr ')' /* do somesub(@args) */ |
1027 | { $$ = newUNOP(OP_ENTERSUB, |
1028 | OPf_SPECIAL|OPf_STACKED, |
1029 | append_elem(OP_LIST, |
1030 | $4, |
1031 | scalar(newCVREF( |
1032 | (OPpENTERSUB_AMPER<<8), |
1033 | scalar($2) |
f05e27e5 |
1034 | )))); dep(); |
1035 | TOKEN_GETMAD($1,$$,'o'); |
1036 | TOKEN_GETMAD($3,$$,'('); |
1037 | TOKEN_GETMAD($5,$$,')'); |
1038 | } |
891be019 |
1039 | | DO scalar '(' ')' /* do $subref () */ |
1040 | { $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED, |
1041 | prepend_elem(OP_LIST, |
f05e27e5 |
1042 | scalar(newCVREF(0,scalar($2))), Nullop)); dep(); |
1043 | TOKEN_GETMAD($1,$$,'o'); |
1044 | TOKEN_GETMAD($3,$$,'('); |
1045 | TOKEN_GETMAD($4,$$,')'); |
1046 | } |
891be019 |
1047 | | DO scalar '(' expr ')' /* do $subref (@args) */ |
1048 | { $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED, |
1049 | prepend_elem(OP_LIST, |
1050 | $4, |
f05e27e5 |
1051 | scalar(newCVREF(0,scalar($2))))); dep(); |
1052 | TOKEN_GETMAD($1,$$,'o'); |
1053 | TOKEN_GETMAD($3,$$,'('); |
1054 | TOKEN_GETMAD($5,$$,')'); |
1055 | } |
891be019 |
1056 | |
1057 | ; |
1058 | |
1059 | term : termbinop |
1060 | | termunop |
1061 | | anonymous |
1062 | | termdo |
e9bdcc27 |
1063 | | term '?' term ':' term |
f05e27e5 |
1064 | { $$ = newCONDOP(0, $1, $3, $5); |
1065 | TOKEN_GETMAD($2,$$,'?'); |
1066 | TOKEN_GETMAD($4,$$,':'); |
1067 | } |
891be019 |
1068 | | REFGEN term /* \$x, \@y, \%z */ |
f05e27e5 |
1069 | { $$ = newUNOP(OP_REFGEN, 0, mod($2,OP_REFGEN)); |
1070 | TOKEN_GETMAD($1,$$,'o'); |
1071 | } |
09bef843 |
1072 | | myattrterm %prec UNIOP |
1073 | { $$ = $1; } |
1074 | | LOCAL term %prec UNIOP |
f05e27e5 |
1075 | { $$ = localize($2,IVAL($1)); |
1076 | TOKEN_GETMAD($1,$$,'d'); |
1077 | } |
a0d0e21e |
1078 | | '(' expr ')' |
f05e27e5 |
1079 | { $$ = sawparens(IF_MAD(newUNOP(OP_NULL,0,$2), $2)); |
1080 | TOKEN_GETMAD($1,$$,'('); |
1081 | TOKEN_GETMAD($3,$$,')'); |
1082 | } |
8d063cd8 |
1083 | | '(' ')' |
f05e27e5 |
1084 | { $$ = sawparens(newNULLLIST()); |
1085 | TOKEN_GETMAD($1,$$,'('); |
1086 | TOKEN_GETMAD($2,$$,')'); |
1087 | } |
79072805 |
1088 | | scalar %prec '(' |
8d063cd8 |
1089 | { $$ = $1; } |
79072805 |
1090 | | star %prec '(' |
8d063cd8 |
1091 | { $$ = $1; } |
79072805 |
1092 | | hsh %prec '(' |
8d063cd8 |
1093 | { $$ = $1; } |
79072805 |
1094 | | ary %prec '(' |
8d063cd8 |
1095 | { $$ = $1; } |
891be019 |
1096 | | arylen %prec '(' /* $#x, $#{ something } */ |
79072805 |
1097 | { $$ = newUNOP(OP_AV2ARYLEN, 0, ref($1, OP_AV2ARYLEN));} |
fad39ff1 |
1098 | | subscripted |
1099 | { $$ = $1; } |
891be019 |
1100 | | ary '[' expr ']' /* array slice */ |
79072805 |
1101 | { $$ = prepend_elem(OP_ASLICE, |
1102 | newOP(OP_PUSHMARK, 0), |
79072805 |
1103 | newLISTOP(OP_ASLICE, 0, |
1104 | list($3), |
f05e27e5 |
1105 | ref($1, OP_ASLICE))); |
1106 | TOKEN_GETMAD($2,$$,'['); |
1107 | TOKEN_GETMAD($4,$$,']'); |
1108 | } |
891be019 |
1109 | | ary '{' expr ';' '}' /* @hash{@keys} */ |
79072805 |
1110 | { $$ = prepend_elem(OP_HSLICE, |
1111 | newOP(OP_PUSHMARK, 0), |
79072805 |
1112 | newLISTOP(OP_HSLICE, 0, |
1113 | list($3), |
a0d0e21e |
1114 | ref(oopsHV($1), OP_HSLICE))); |
f05e27e5 |
1115 | PL_expect = XOPERATOR; |
1116 | TOKEN_GETMAD($2,$$,'{'); |
1117 | TOKEN_GETMAD($4,$$,';'); |
1118 | TOKEN_GETMAD($5,$$,'}'); |
1119 | } |
79072805 |
1120 | | THING %prec '(' |
1121 | { $$ = $1; } |
891be019 |
1122 | | amper /* &foo; */ |
c07a80fd |
1123 | { $$ = newUNOP(OP_ENTERSUB, 0, scalar($1)); } |
ecb2f335 |
1124 | | amper '(' ')' /* &foo() */ |
f05e27e5 |
1125 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, scalar($1)); |
1126 | TOKEN_GETMAD($2,$$,'('); |
1127 | TOKEN_GETMAD($3,$$,')'); |
1128 | } |
891be019 |
1129 | | amper '(' expr ')' /* &foo(@args) */ |
f05e27e5 |
1130 | { |
1131 | $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
1132 | append_elem(OP_LIST, $3, scalar($1))); |
1133 | DO_MAD( |
1134 | OP* op = $$; |
1135 | if (op->op_type == OP_CONST) { /* defeat const fold */ |
1136 | op = (OP*)op->op_madprop->mad_val; |
1137 | } |
1138 | token_getmad($2,op,'('); |
1139 | token_getmad($4,op,')'); |
1140 | ) |
1141 | } |
891be019 |
1142 | | NOAMP WORD listexpr /* foo(@args) */ |
a0d0e21e |
1143 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
f05e27e5 |
1144 | append_elem(OP_LIST, $3, scalar($2))); |
1145 | TOKEN_GETMAD($1,$$,'o'); |
1146 | } |
891be019 |
1147 | | LOOPEX /* loop exiting command (goto, last, dump, etc) */ |
f05e27e5 |
1148 | { $$ = newOP(IVAL($1), OPf_SPECIAL); |
1149 | PL_hints |= HINT_BLOCK_SCOPE; |
1150 | TOKEN_GETMAD($1,$$,'o'); |
1151 | } |
a0d0e21e |
1152 | | LOOPEX term |
f05e27e5 |
1153 | { $$ = newLOOPEX(IVAL($1),$2); |
1154 | TOKEN_GETMAD($1,$$,'o'); |
1155 | } |
891be019 |
1156 | | NOTOP argexpr /* not $foo */ |
f05e27e5 |
1157 | { $$ = newUNOP(OP_NOT, 0, scalar($2)); |
1158 | TOKEN_GETMAD($1,$$,'o'); |
1159 | } |
891be019 |
1160 | | UNIOP /* Unary op, $_ implied */ |
f05e27e5 |
1161 | { $$ = newOP(IVAL($1), 0); |
1162 | TOKEN_GETMAD($1,$$,'o'); |
1163 | } |
1164 | | UNIOP block /* eval { foo }* */ |
1165 | { $$ = newUNOP(IVAL($1), 0, $2); |
1166 | TOKEN_GETMAD($1,$$,'o'); |
1167 | } |
891be019 |
1168 | | UNIOP term /* Unary op */ |
f05e27e5 |
1169 | { $$ = newUNOP(IVAL($1), 0, $2); |
1170 | TOKEN_GETMAD($1,$$,'o'); |
1171 | } |
1172 | | REQUIRE /* require, $_ implied *//* FIMXE for MAD needed? */ |
a72a1c8b |
1173 | { $$ = newOP(OP_REQUIRE, $1 ? OPf_SPECIAL : 0); } |
f05e27e5 |
1174 | | REQUIRE term /* require Foo *//* FIMXE for MAD needed? */ |
a72a1c8b |
1175 | { $$ = newUNOP(OP_REQUIRE, $1 ? OPf_SPECIAL : 0, $2); } |
3cd0a11a |
1176 | | UNIOPSUB |
1177 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, scalar($1)); } |
891be019 |
1178 | | UNIOPSUB term /* Sub treated as unop */ |
4633a7c4 |
1179 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
1180 | append_elem(OP_LIST, $2, scalar($1))); } |
891be019 |
1181 | | FUNC0 /* Nullary operator */ |
f05e27e5 |
1182 | { $$ = newOP(IVAL($1), 0); |
1183 | TOKEN_GETMAD($1,$$,'o'); |
1184 | } |
ae986130 |
1185 | | FUNC0 '(' ')' |
f05e27e5 |
1186 | { $$ = newOP(IVAL($1), 0); |
1187 | TOKEN_GETMAD($1,$$,'o'); |
1188 | TOKEN_GETMAD($2,$$,'('); |
1189 | TOKEN_GETMAD($3,$$,')'); |
1190 | } |
891be019 |
1191 | | FUNC0SUB /* Sub treated as nullop */ |
28757baa |
1192 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
4633a7c4 |
1193 | scalar($1)); } |
891be019 |
1194 | | FUNC1 '(' ')' /* not () */ |
f05e27e5 |
1195 | { $$ = (IVAL($1) == OP_NOT) |
1196 | ? newUNOP(IVAL($1), 0, newSVOP(OP_CONST, 0, newSViv(0))) |
1197 | : newOP(IVAL($1), OPf_SPECIAL); |
1198 | |
1199 | TOKEN_GETMAD($1,$$,'o'); |
1200 | TOKEN_GETMAD($2,$$,'('); |
1201 | TOKEN_GETMAD($3,$$,')'); |
1202 | } |
891be019 |
1203 | | FUNC1 '(' expr ')' /* not($foo) */ |
f05e27e5 |
1204 | { $$ = newUNOP(IVAL($1), 0, $3); |
1205 | TOKEN_GETMAD($1,$$,'o'); |
1206 | TOKEN_GETMAD($2,$$,'('); |
1207 | TOKEN_GETMAD($4,$$,')'); |
1208 | } |
1209 | | PMFUNC '(' argexpr ')' /* m//, s///, tr/// */ |
1210 | { $$ = pmruntime($1, $3, 1); |
1211 | TOKEN_GETMAD($2,$$,'('); |
1212 | TOKEN_GETMAD($4,$$,')'); |
1213 | } |
79072805 |
1214 | | WORD |
378cc40b |
1215 | | listop |
8d063cd8 |
1216 | ; |
1217 | |
891be019 |
1218 | /* "my" declarations, with optional attributes */ |
09bef843 |
1219 | myattrterm: MY myterm myattrlist |
f05e27e5 |
1220 | { $$ = my_attrs($2,$3); |
1221 | DO_MAD( |
1222 | token_getmad($1,$$,'d'); |
1223 | append_madprops($3->op_madprop, $$, 'a'); |
1224 | $3->op_madprop = 0; |
1225 | ) |
1226 | } |
09bef843 |
1227 | | MY myterm |
f05e27e5 |
1228 | { $$ = localize($2,IVAL($1)); |
1229 | TOKEN_GETMAD($1,$$,'d'); |
1230 | } |
09bef843 |
1231 | ; |
1232 | |
891be019 |
1233 | /* Things that can be "my"'d */ |
09bef843 |
1234 | myterm : '(' expr ')' |
f05e27e5 |
1235 | { $$ = sawparens($2); |
1236 | TOKEN_GETMAD($1,$$,'('); |
1237 | TOKEN_GETMAD($3,$$,')'); |
1238 | } |
09bef843 |
1239 | | '(' ')' |
f05e27e5 |
1240 | { $$ = sawparens(newNULLLIST()); |
1241 | TOKEN_GETMAD($1,$$,'('); |
1242 | TOKEN_GETMAD($2,$$,')'); |
1243 | } |
09bef843 |
1244 | | scalar %prec '(' |
1245 | { $$ = $1; } |
1246 | | hsh %prec '(' |
1247 | { $$ = $1; } |
1248 | | ary %prec '(' |
1249 | { $$ = $1; } |
1250 | ; |
1251 | |
891be019 |
1252 | /* Basic list expressions */ |
fad39ff1 |
1253 | listexpr: /* NULL */ %prec PREC_LOW |
8990e307 |
1254 | { $$ = Nullop; } |
fad39ff1 |
1255 | | argexpr %prec PREC_LOW |
a0d0e21e |
1256 | { $$ = $1; } |
1257 | ; |
1258 | |
1259 | listexprcom: /* NULL */ |
1260 | { $$ = Nullop; } |
79072805 |
1261 | | expr |
1262 | { $$ = $1; } |
a0d0e21e |
1263 | | expr ',' |
f05e27e5 |
1264 | { |
1265 | #ifdef MAD |
1266 | OP* op = newNULLLIST(); |
1267 | token_getmad($2,op,','); |
1268 | $$ = append_elem(OP_LIST, $1, op); |
1269 | #else |
1270 | $$ = $1; |
1271 | #endif |
1272 | |
1273 | } |
79072805 |
1274 | ; |
1275 | |
891be019 |
1276 | /* A little bit of trickery to make "for my $foo (@bar)" actually be |
1277 | lexical */ |
55497cff |
1278 | my_scalar: scalar |
3280af22 |
1279 | { PL_in_my = 0; $$ = my($1); } |
55497cff |
1280 | ; |
1281 | |
79072805 |
1282 | amper : '&' indirob |
f05e27e5 |
1283 | { $$ = newCVREF(IVAL($1),$2); |
1284 | TOKEN_GETMAD($1,$$,'&'); |
1285 | } |
a687059c |
1286 | ; |
1287 | |
79072805 |
1288 | scalar : '$' indirob |
f05e27e5 |
1289 | { $$ = newSVREF($2); |
1290 | TOKEN_GETMAD($1,$$,'$'); |
1291 | } |
a687059c |
1292 | ; |
1293 | |
79072805 |
1294 | ary : '@' indirob |
f05e27e5 |
1295 | { $$ = newAVREF($2); |
1296 | TOKEN_GETMAD($1,$$,'@'); |
1297 | } |
79072805 |
1298 | ; |
1299 | |
1300 | hsh : '%' indirob |
f05e27e5 |
1301 | { $$ = newHVREF($2); |
1302 | TOKEN_GETMAD($1,$$,'%'); |
1303 | } |
79072805 |
1304 | ; |
1305 | |
1306 | arylen : DOLSHARP indirob |
f05e27e5 |
1307 | { $$ = newAVREF($2); |
1308 | TOKEN_GETMAD($1,$$,'l'); |
1309 | } |
79072805 |
1310 | ; |
1311 | |
1312 | star : '*' indirob |
f05e27e5 |
1313 | { $$ = newGVREF(0,$2); |
1314 | TOKEN_GETMAD($1,$$,'*'); |
1315 | } |
79072805 |
1316 | ; |
1317 | |
891be019 |
1318 | /* Indirect objects */ |
79072805 |
1319 | indirob : WORD |
1320 | { $$ = scalar($1); } |
fad39ff1 |
1321 | | scalar %prec PREC_LOW |
f05e27e5 |
1322 | { $$ = scalar($1); } |
79072805 |
1323 | | block |
a0d0e21e |
1324 | { $$ = scope($1); } |
79072805 |
1325 | |
93a17b20 |
1326 | | PRIVATEREF |
1327 | { $$ = $1; } |
8d063cd8 |
1328 | ; |