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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 | * Copyright (c) 2007, 2008 by Larry Wall and others |
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5 | * |
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6 | * You may distribute under the terms of either the GNU General Public |
7 | * License or the Artistic License, as specified in the README file. |
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8 | * |
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9 | */ |
10 | |
11 | /* |
12 | * 'I see,' laughed Strider. 'I look foul and feel fair. Is that it? |
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13 | * All that is gold does not glitter, not all those who wander are lost.' |
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14 | * |
15 | * This file holds the grammar for the Perl language. If edited, you need |
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16 | * to run regen_perly.pl, which re-creates the files perly.h, perly.tab |
17 | * and perly.act which are derived from this. |
18 | * |
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19 | * Note that these derived files are included and compiled twice; once |
20 | * from perly.c, and once from madly.c. The second time, a number of MAD |
21 | * macros are defined, which compile in extra code that allows the parse |
22 | * tree to be accurately dumped. In particular: |
23 | * |
24 | * MAD defined if compiling madly.c |
25 | * DO_MAD(A) expands to A under madly.c, to null otherwise |
26 | * IF_MAD(a,b) expands to A under madly.c, to B otherwise |
27 | * TOKEN_GETMAD() expands to token_getmad() under madly.c, to null otherwise |
28 | * TOKEN_FREE() similarly |
29 | * OP_GETMAD() similarly |
30 | * IVAL(i) expands to (i)->tk_lval.ival or (i) |
31 | * PVAL(p) expands to (p)->tk_lval.pval or (p) |
32 | * |
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33 | * The main job of of this grammar is to call the various newFOO() |
34 | * functions in op.c to build a syntax tree of OP structs. |
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35 | * It relies on the lexer in toke.c to do the tokenizing. |
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36 | * |
37 | * Note: due to the way that the cleanup code works WRT to freeing ops on |
38 | * the parse stack, it is dangerous to assign to the $n variables within |
39 | * an action. |
166f8a29 |
40 | */ |
41 | |
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42 | /* Make the parser re-entrant. */ |
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43 | |
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44 | %pure_parser |
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45 | |
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46 | /* FIXME for MAD - is the new mintro on while and until important? */ |
47 | |
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48 | %start prog |
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49 | |
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50 | %union { |
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51 | I32 ival; /* __DEFAULT__ (marker for regen_perly.pl; |
52 | must always be 1st union member) */ |
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53 | char *pval; |
54 | OP *opval; |
55 | GV *gvval; |
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56 | #ifdef PERL_IN_MADLY_C |
57 | TOKEN* p_tkval; |
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58 | TOKEN* i_tkval; |
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59 | #else |
60 | char *p_tkval; |
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61 | I32 i_tkval; |
62 | #endif |
63 | #ifdef PERL_MAD |
64 | TOKEN* tkval; |
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65 | #endif |
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66 | } |
67 | |
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68 | %token <i_tkval> '{' '}' '[' ']' '-' '+' '$' '@' '%' '*' '&' ';' |
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69 | |
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70 | %token <opval> WORD METHOD FUNCMETH THING PMFUNC PRIVATEREF |
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71 | %token <opval> FUNC0SUB UNIOPSUB LSTOPSUB |
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72 | %token <p_tkval> LABEL |
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73 | %token <i_tkval> FORMAT SUB ANONSUB PACKAGE USE |
74 | %token <i_tkval> WHILE UNTIL IF UNLESS ELSE ELSIF CONTINUE FOR |
75 | %token <i_tkval> GIVEN WHEN DEFAULT |
be25f609 |
76 | %token <i_tkval> LOOPEX DOTDOT YADAYADA |
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77 | %token <i_tkval> FUNC0 FUNC1 FUNC UNIOP LSTOP |
78 | %token <i_tkval> RELOP EQOP MULOP ADDOP |
79 | %token <i_tkval> DOLSHARP DO HASHBRACK NOAMP |
80 | %token <i_tkval> LOCAL MY MYSUB REQUIRE |
81 | %token <i_tkval> COLONATTR |
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82 | |
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83 | %type <ival> prog progstart remember mremember |
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84 | %type <ival> startsub startanonsub startformsub |
85 | /* FIXME for MAD - are these two ival? */ |
86 | %type <ival> mydefsv mintro |
87 | |
88 | %type <opval> decl format subrout mysubrout package use peg |
89 | |
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90 | %type <opval> block mblock lineseq line loop cond else |
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91 | %type <opval> expr term subscripted scalar ary hsh arylen star amper sideff |
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92 | %type <opval> argexpr nexpr texpr iexpr mexpr mnexpr miexpr |
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93 | %type <opval> listexpr listexprcom indirob listop method |
94 | %type <opval> formname subname proto subbody cont my_scalar |
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95 | %type <opval> subattrlist myattrlist myattrterm myterm |
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96 | %type <opval> termbinop termunop anonymous termdo |
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97 | %type <opval> switch case |
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98 | %type <p_tkval> label |
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99 | |
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100 | %nonassoc <i_tkval> PREC_LOW |
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101 | %nonassoc LOOPEX |
102 | |
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103 | %left <i_tkval> OROP DOROP |
104 | %left <i_tkval> ANDOP |
105 | %right <i_tkval> NOTOP |
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106 | %nonassoc LSTOP LSTOPSUB |
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107 | %left <i_tkval> ',' |
108 | %right <i_tkval> ASSIGNOP |
109 | %right <i_tkval> '?' ':' |
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110 | %nonassoc DOTDOT YADAYADA |
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111 | %left <i_tkval> OROR DORDOR |
112 | %left <i_tkval> ANDAND |
113 | %left <i_tkval> BITOROP |
114 | %left <i_tkval> BITANDOP |
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115 | %nonassoc EQOP |
116 | %nonassoc RELOP |
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117 | %nonassoc UNIOP UNIOPSUB |
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118 | %nonassoc REQUIRE |
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119 | %left <i_tkval> SHIFTOP |
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120 | %left ADDOP |
121 | %left MULOP |
123d08c9 |
122 | %left <i_tkval> MATCHOP |
123 | %right <i_tkval> '!' '~' UMINUS REFGEN |
124 | %right <i_tkval> POWOP |
125 | %nonassoc <i_tkval> PREINC PREDEC POSTINC POSTDEC |
126 | %left <i_tkval> ARROW |
127 | %nonassoc <i_tkval> ')' |
128 | %left <i_tkval> '(' |
fad39ff1 |
129 | %left '[' '{' |
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130 | |
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131 | %token <i_tkval> PEG |
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132 | |
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133 | %% /* RULES */ |
134 | |
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135 | /* The whole program */ |
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136 | prog : progstart |
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137 | /*CONTINUED*/ lineseq |
ecb2f335 |
138 | { $$ = $1; newPROG(block_end($1,$2)); } |
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139 | ; |
140 | |
891be019 |
141 | /* An ordinary block */ |
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142 | block : '{' remember lineseq '}' |
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143 | { if (PL_parser->copline > (line_t)IVAL($1)) |
144 | PL_parser->copline = (line_t)IVAL($1); |
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145 | $$ = block_end($2, $3); |
146 | TOKEN_GETMAD($1,$$,'{'); |
147 | TOKEN_GETMAD($4,$$,'}'); |
148 | } |
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149 | ; |
150 | |
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151 | remember: /* NULL */ /* start a full lexical scope */ |
152 | { $$ = block_start(TRUE); } |
153 | ; |
154 | |
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155 | mydefsv: /* NULL */ /* lexicalize $_ */ |
156 | { $$ = (I32) allocmy("$_"); } |
157 | ; |
158 | |
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159 | progstart: |
160 | { |
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161 | PL_parser->expect = XSTATE; $$ = block_start(TRUE); |
ecb2f335 |
162 | } |
163 | ; |
164 | |
165 | |
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166 | mblock : '{' mremember lineseq '}' |
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167 | { if (PL_parser->copline > (line_t)IVAL($1)) |
168 | PL_parser->copline = (line_t)IVAL($1); |
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169 | $$ = block_end($2, $3); |
170 | TOKEN_GETMAD($1,$$,'{'); |
171 | TOKEN_GETMAD($4,$$,'}'); |
172 | } |
55497cff |
173 | ; |
174 | |
175 | mremember: /* NULL */ /* start a partial lexical scope */ |
176 | { $$ = block_start(FALSE); } |
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177 | ; |
178 | |
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179 | /* A collection of "lines" in the program */ |
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180 | lineseq : /* NULL */ |
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181 | { $$ = (OP*)NULL; } |
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182 | | lineseq decl |
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183 | { |
184 | $$ = IF_MAD( |
185 | append_list(OP_LINESEQ, |
186 | (LISTOP*)$1, (LISTOP*)$2), |
187 | $1); |
188 | } |
503de470 |
189 | | lineseq line |
190 | { $$ = append_list(OP_LINESEQ, |
191 | (LISTOP*)$1, (LISTOP*)$2); |
3280af22 |
192 | PL_pad_reset_pending = TRUE; |
503de470 |
193 | if ($1 && $2) |
194 | PL_hints |= HINT_BLOCK_SCOPE; |
195 | } |
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196 | ; |
197 | |
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198 | /* A "line" in the program */ |
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199 | line : label cond |
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200 | { $$ = newSTATEOP(0, PVAL($1), $2); |
201 | TOKEN_GETMAD($1,((LISTOP*)$$)->op_first,'L'); } |
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202 | | loop /* loops add their own labels */ |
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203 | | switch /* ... and so do switches */ |
204 | { $$ = $1; } |
205 | | label case |
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206 | { $$ = newSTATEOP(0, PVAL($1), $2); } |
8d063cd8 |
207 | | label ';' |
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208 | { |
209 | if (PVAL($1)) { |
210 | $$ = newSTATEOP(0, PVAL($1), newOP(OP_NULL, 0)); |
211 | TOKEN_GETMAD($1,$$,'L'); |
212 | TOKEN_GETMAD($2,((LISTOP*)$$)->op_first,';'); |
213 | } |
214 | else { |
215 | $$ = IF_MAD( |
216 | newOP(OP_NULL, 0), |
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217 | (OP*)NULL); |
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218 | PL_parser->copline = NOLINE; |
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219 | TOKEN_FREE($1); |
220 | TOKEN_GETMAD($2,$$,';'); |
221 | } |
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222 | PL_parser->expect = XSTATE; |
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223 | } |
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224 | | label sideff ';' |
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225 | { |
226 | $$ = newSTATEOP(0, PVAL($1), $2); |
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227 | PL_parser->expect = XSTATE; |
035e2bcc |
228 | DO_MAD({ |
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229 | /* sideff might already have a nexstate */ |
230 | OP* op = ((LISTOP*)$$)->op_first; |
231 | if (op) { |
232 | while (op->op_sibling && |
233 | op->op_sibling->op_type == OP_NEXTSTATE) |
234 | op = op->op_sibling; |
235 | token_getmad($1,op,'L'); |
236 | token_getmad($3,op,';'); |
237 | } |
035e2bcc |
238 | }) |
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239 | } |
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240 | ; |
241 | |
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242 | /* An expression which may have a side-effect */ |
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243 | sideff : error |
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244 | { $$ = (OP*)NULL; } |
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245 | | expr |
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246 | { $$ = $1; } |
a687059c |
247 | | expr IF expr |
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248 | { $$ = newLOGOP(OP_AND, 0, $3, $1); |
249 | TOKEN_GETMAD($2,$$,'i'); |
250 | } |
a687059c |
251 | | expr UNLESS expr |
f05e27e5 |
252 | { $$ = newLOGOP(OP_OR, 0, $3, $1); |
253 | TOKEN_GETMAD($2,$$,'i'); |
254 | } |
a687059c |
255 | | expr WHILE expr |
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256 | { $$ = newLOOPOP(OPf_PARENS, 1, scalar($3), $1); |
257 | TOKEN_GETMAD($2,$$,'w'); |
258 | } |
55497cff |
259 | | expr UNTIL iexpr |
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260 | { $$ = newLOOPOP(OPf_PARENS, 1, $3, $1); |
261 | TOKEN_GETMAD($2,$$,'w'); |
262 | } |
ecca16b0 |
263 | | expr FOR expr |
1a9a51d4 |
264 | { $$ = newFOROP(0, NULL, (line_t)IVAL($2), |
bcabcc50 |
265 | (OP*)NULL, $3, $1, (OP*)NULL); |
f05e27e5 |
266 | TOKEN_GETMAD($2,((LISTOP*)$$)->op_first->op_sibling,'w'); |
267 | } |
79072805 |
268 | ; |
269 | |
891be019 |
270 | /* else and elsif blocks */ |
79072805 |
271 | else : /* NULL */ |
bcabcc50 |
272 | { $$ = (OP*)NULL; } |
55497cff |
273 | | ELSE mblock |
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274 | { ($2)->op_flags |= OPf_PARENS; $$ = scope($2); |
275 | TOKEN_GETMAD($1,$$,'o'); |
276 | } |
55497cff |
277 | | ELSIF '(' mexpr ')' mblock else |
53a7735b |
278 | { PL_parser->copline = (line_t)IVAL($1); |
f6f3a1fe |
279 | $$ = newCONDOP(0, newSTATEOP(OPf_SPECIAL,NULL,$3), scope($5), $6); |
f05e27e5 |
280 | PL_hints |= HINT_BLOCK_SCOPE; |
281 | TOKEN_GETMAD($1,$$,'I'); |
282 | TOKEN_GETMAD($2,$$,'('); |
283 | TOKEN_GETMAD($4,$$,')'); |
284 | } |
79072805 |
285 | ; |
286 | |
891be019 |
287 | /* Real conditional expressions */ |
55497cff |
288 | cond : IF '(' remember mexpr ')' mblock else |
53a7735b |
289 | { PL_parser->copline = (line_t)IVAL($1); |
36477c24 |
290 | $$ = block_end($3, |
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291 | newCONDOP(0, $4, scope($6), $7)); |
292 | TOKEN_GETMAD($1,$$,'I'); |
293 | TOKEN_GETMAD($2,$$,'('); |
294 | TOKEN_GETMAD($5,$$,')'); |
295 | } |
55497cff |
296 | | UNLESS '(' remember miexpr ')' mblock else |
53a7735b |
297 | { PL_parser->copline = (line_t)IVAL($1); |
36477c24 |
298 | $$ = block_end($3, |
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299 | newCONDOP(0, $4, scope($6), $7)); |
300 | TOKEN_GETMAD($1,$$,'I'); |
301 | TOKEN_GETMAD($2,$$,'('); |
302 | TOKEN_GETMAD($5,$$,')'); |
303 | } |
79072805 |
304 | ; |
305 | |
0d863452 |
306 | /* Cases for a switch statement */ |
307 | case : WHEN '(' remember mexpr ')' mblock |
308 | { $$ = block_end($3, |
309 | newWHENOP($4, scope($6))); } |
310 | | DEFAULT block |
311 | { $$ = newWHENOP(0, scope($2)); } |
312 | ; |
313 | |
891be019 |
314 | /* Continue blocks */ |
79072805 |
315 | cont : /* NULL */ |
bcabcc50 |
316 | { $$ = (OP*)NULL; } |
79072805 |
317 | | CONTINUE block |
f05e27e5 |
318 | { $$ = scope($2); |
319 | TOKEN_GETMAD($1,$$,'o'); |
320 | } |
79072805 |
321 | ; |
322 | |
891be019 |
323 | /* Loops: while, until, for, and a bare block */ |
a034e688 |
324 | loop : label WHILE '(' remember texpr ')' mintro mblock cont |
f05e27e5 |
325 | { OP *innerop; |
53a7735b |
326 | PL_parser->copline = (line_t)$2; |
36477c24 |
327 | $$ = block_end($4, |
f05e27e5 |
328 | newSTATEOP(0, PVAL($1), |
bcabcc50 |
329 | innerop = newWHILEOP(0, 1, (LOOP*)(OP*)NULL, |
f05e27e5 |
330 | IVAL($2), $5, $8, $9, $7))); |
331 | TOKEN_GETMAD($1,innerop,'L'); |
332 | TOKEN_GETMAD($2,innerop,'W'); |
333 | TOKEN_GETMAD($3,innerop,'('); |
334 | TOKEN_GETMAD($6,innerop,')'); |
335 | } |
336 | |
a034e688 |
337 | | label UNTIL '(' remember iexpr ')' mintro mblock cont |
f05e27e5 |
338 | { OP *innerop; |
53a7735b |
339 | PL_parser->copline = (line_t)$2; |
36477c24 |
340 | $$ = block_end($4, |
f05e27e5 |
341 | newSTATEOP(0, PVAL($1), |
bcabcc50 |
342 | innerop = newWHILEOP(0, 1, (LOOP*)(OP*)NULL, |
f05e27e5 |
343 | IVAL($2), $5, $8, $9, $7))); |
344 | TOKEN_GETMAD($1,innerop,'L'); |
345 | TOKEN_GETMAD($2,innerop,'W'); |
346 | TOKEN_GETMAD($3,innerop,'('); |
347 | TOKEN_GETMAD($6,innerop,')'); |
348 | } |
bbce6d69 |
349 | | label FOR MY remember my_scalar '(' mexpr ')' mblock cont |
f05e27e5 |
350 | { OP *innerop; |
351 | $$ = block_end($4, |
352 | innerop = newFOROP(0, PVAL($1), (line_t)IVAL($2), |
353 | $5, $7, $9, $10)); |
354 | TOKEN_GETMAD($1,((LISTOP*)innerop)->op_first,'L'); |
355 | TOKEN_GETMAD($2,((LISTOP*)innerop)->op_first->op_sibling,'W'); |
356 | TOKEN_GETMAD($3,((LISTOP*)innerop)->op_first->op_sibling,'d'); |
357 | TOKEN_GETMAD($6,((LISTOP*)innerop)->op_first->op_sibling,'('); |
358 | TOKEN_GETMAD($8,((LISTOP*)innerop)->op_first->op_sibling,')'); |
359 | } |
bbce6d69 |
360 | | label FOR scalar '(' remember mexpr ')' mblock cont |
f05e27e5 |
361 | { OP *innerop; |
362 | $$ = block_end($5, |
363 | innerop = newFOROP(0, PVAL($1), (line_t)IVAL($2), |
364 | mod($3, OP_ENTERLOOP), $6, $8, $9)); |
365 | TOKEN_GETMAD($1,((LISTOP*)innerop)->op_first,'L'); |
366 | TOKEN_GETMAD($2,((LISTOP*)innerop)->op_first->op_sibling,'W'); |
367 | TOKEN_GETMAD($4,((LISTOP*)innerop)->op_first->op_sibling,'('); |
368 | TOKEN_GETMAD($7,((LISTOP*)innerop)->op_first->op_sibling,')'); |
369 | } |
bbce6d69 |
370 | | label FOR '(' remember mexpr ')' mblock cont |
f05e27e5 |
371 | { OP *innerop; |
372 | $$ = block_end($4, |
373 | innerop = newFOROP(0, PVAL($1), (line_t)IVAL($2), |
bcabcc50 |
374 | (OP*)NULL, $5, $7, $8)); |
f05e27e5 |
375 | TOKEN_GETMAD($1,((LISTOP*)innerop)->op_first,'L'); |
376 | TOKEN_GETMAD($2,((LISTOP*)innerop)->op_first->op_sibling,'W'); |
377 | TOKEN_GETMAD($3,((LISTOP*)innerop)->op_first->op_sibling,'('); |
378 | TOKEN_GETMAD($6,((LISTOP*)innerop)->op_first->op_sibling,')'); |
379 | } |
a034e688 |
380 | | label FOR '(' remember mnexpr ';' texpr ';' mintro mnexpr ')' |
381 | mblock |
8d063cd8 |
382 | /* basically fake up an initialize-while lineseq */ |
36c66720 |
383 | { OP *forop; |
53a7735b |
384 | PL_parser->copline = (line_t)IVAL($2); |
f05e27e5 |
385 | forop = newSTATEOP(0, PVAL($1), |
bcabcc50 |
386 | newWHILEOP(0, 1, (LOOP*)(OP*)NULL, |
f05e27e5 |
387 | IVAL($2), scalar($7), |
a034e688 |
388 | $12, $10, $9)); |
f05e27e5 |
389 | #ifdef MAD |
f05e27e5 |
390 | forop = newUNOP(OP_NULL, 0, append_elem(OP_LINESEQ, |
391 | newSTATEOP(0, |
63031daf |
392 | CopLABEL_alloc(($1)->tk_lval.pval), |
700f8fa5 |
393 | ($5 ? $5 : newOP(OP_NULL, 0)) ), |
f05e27e5 |
394 | forop)); |
395 | |
396 | token_getmad($2,forop,'3'); |
397 | token_getmad($3,forop,'('); |
398 | token_getmad($6,forop,'1'); |
399 | token_getmad($8,forop,'2'); |
400 | token_getmad($11,forop,')'); |
401 | token_getmad($1,forop,'L'); |
402 | #else |
36c66720 |
403 | if ($5) { |
404 | forop = append_elem(OP_LINESEQ, |
63031daf |
405 | newSTATEOP(0, CopLABEL_alloc($1), $5), |
36c66720 |
406 | forop); |
407 | } |
408 | |
f05e27e5 |
409 | |
410 | #endif |
36c66720 |
411 | $$ = block_end($4, forop); } |
79072805 |
412 | | label block cont /* a block is a loop that happens once */ |
f05e27e5 |
413 | { $$ = newSTATEOP(0, PVAL($1), |
bcabcc50 |
414 | newWHILEOP(0, 1, (LOOP*)(OP*)NULL, |
415 | NOLINE, (OP*)NULL, $2, $3, 0)); |
f05e27e5 |
416 | TOKEN_GETMAD($1,((LISTOP*)$$)->op_first,'L'); } |
8d063cd8 |
417 | ; |
418 | |
0d863452 |
419 | /* Switch blocks */ |
420 | switch : label GIVEN '(' remember mydefsv mexpr ')' mblock |
53a7735b |
421 | { PL_parser->copline = (line_t) $2; |
0d863452 |
422 | $$ = block_end($4, |
f05e27e5 |
423 | newSTATEOP(0, PVAL($1), |
0d863452 |
424 | newGIVENOP($6, scope($8), |
425 | (PADOFFSET) $5) )); } |
426 | ; |
427 | |
a034e688 |
428 | /* determine whether there are any new my declarations */ |
429 | mintro : /* NULL */ |
430 | { $$ = (PL_min_intro_pending && |
431 | PL_max_intro_pending >= PL_min_intro_pending); |
432 | intro_my(); } |
433 | |
891be019 |
434 | /* Normal expression */ |
8d063cd8 |
435 | nexpr : /* NULL */ |
bcabcc50 |
436 | { $$ = (OP*)NULL; } |
8d063cd8 |
437 | | sideff |
438 | ; |
439 | |
891be019 |
440 | /* Boolean expression */ |
8d063cd8 |
441 | texpr : /* NULL means true */ |
f05e27e5 |
442 | { YYSTYPE tmplval; |
443 | (void)scan_num("1", &tmplval); |
444 | $$ = tmplval.opval; } |
8d063cd8 |
445 | | expr |
446 | ; |
447 | |
891be019 |
448 | /* Inverted boolean expression */ |
55497cff |
449 | iexpr : expr |
450 | { $$ = invert(scalar($1)); } |
451 | ; |
452 | |
891be019 |
453 | /* Expression with its own lexical scope */ |
55497cff |
454 | mexpr : expr |
bbce6d69 |
455 | { $$ = $1; intro_my(); } |
456 | ; |
457 | |
458 | mnexpr : nexpr |
459 | { $$ = $1; intro_my(); } |
55497cff |
460 | ; |
461 | |
55497cff |
462 | miexpr : iexpr |
bbce6d69 |
463 | { $$ = $1; intro_my(); } |
55497cff |
464 | ; |
465 | |
891be019 |
466 | /* Optional "MAIN:"-style loop labels */ |
8d063cd8 |
467 | label : /* empty */ |
f05e27e5 |
468 | { |
469 | #ifdef MAD |
470 | YYSTYPE tmplval; |
1a9a51d4 |
471 | tmplval.pval = NULL; |
f05e27e5 |
472 | $$ = newTOKEN(OP_NULL, tmplval, 0); |
473 | #else |
1a9a51d4 |
474 | $$ = NULL; |
f05e27e5 |
475 | #endif |
476 | } |
32c2e4fb |
477 | | LABEL |
8d063cd8 |
478 | ; |
479 | |
f05e27e5 |
480 | /* Some kind of declaration - just hang on peg in the parse tree */ |
8d063cd8 |
481 | decl : format |
f05e27e5 |
482 | { $$ = $1; } |
8d063cd8 |
483 | | subrout |
f05e27e5 |
484 | { $$ = $1; } |
09bef843 |
485 | | mysubrout |
f05e27e5 |
486 | { $$ = $1; } |
a687059c |
487 | | package |
f05e27e5 |
488 | { $$ = $1; } |
a0d0e21e |
489 | | use |
f05e27e5 |
490 | { $$ = $1; } |
491 | |
492 | /* these two are only used by MAD */ |
493 | |
494 | | peg |
495 | { $$ = $1; } |
496 | ; |
497 | |
498 | peg : PEG |
499 | { $$ = newOP(OP_NULL,0); |
500 | TOKEN_GETMAD($1,$$,'p'); |
501 | } |
8d063cd8 |
502 | ; |
503 | |
718a7425 |
504 | format : FORMAT startformsub formname block |
5a5094bd |
505 | { SvREFCNT_inc_simple_void(PL_compcv); |
f05e27e5 |
506 | #ifdef MAD |
718a7425 |
507 | $$ = newFORM($2, $3, $4); |
f05e27e5 |
508 | prepend_madprops($1->tk_mad, $$, 'F'); |
509 | $1->tk_mad = 0; |
510 | token_free($1); |
511 | #else |
718a7425 |
512 | newFORM($2, $3, $4); |
bcabcc50 |
513 | $$ = (OP*)NULL; |
f05e27e5 |
514 | #endif |
515 | } |
44a8e56a |
516 | ; |
517 | |
518 | formname: WORD { $$ = $1; } |
bcabcc50 |
519 | | /* NULL */ { $$ = (OP*)NULL; } |
8d063cd8 |
520 | ; |
521 | |
891be019 |
522 | /* Unimplemented "my sub foo { }" */ |
718a7425 |
523 | mysubrout: MYSUB startsub subname proto subattrlist subbody |
5a5094bd |
524 | { SvREFCNT_inc_simple_void(PL_compcv); |
f05e27e5 |
525 | #ifdef MAD |
718a7425 |
526 | $$ = newMYSUB($2, $3, $4, $5, $6); |
f05e27e5 |
527 | token_getmad($1,$$,'d'); |
528 | #else |
718a7425 |
529 | newMYSUB($2, $3, $4, $5, $6); |
bcabcc50 |
530 | $$ = (OP*)NULL; |
f05e27e5 |
531 | #endif |
532 | } |
09bef843 |
533 | ; |
534 | |
891be019 |
535 | /* Subroutine definition */ |
718a7425 |
536 | subrout : SUB startsub subname proto subattrlist subbody |
5a5094bd |
537 | { SvREFCNT_inc_simple_void(PL_compcv); |
f05e27e5 |
538 | #ifdef MAD |
035e2bcc |
539 | { |
540 | OP* o = newSVOP(OP_ANONCODE, 0, |
541 | (SV*)newATTRSUB($2, $3, $4, $5, $6)); |
542 | $$ = newOP(OP_NULL,0); |
543 | op_getmad(o,$$,'&'); |
544 | op_getmad($3,$$,'n'); |
545 | op_getmad($4,$$,'s'); |
546 | op_getmad($5,$$,'a'); |
547 | token_getmad($1,$$,'d'); |
548 | append_madprops($6->op_madprop, $$, 0); |
549 | $6->op_madprop = 0; |
550 | } |
f05e27e5 |
551 | #else |
718a7425 |
552 | newATTRSUB($2, $3, $4, $5, $6); |
bcabcc50 |
553 | $$ = (OP*)NULL; |
f05e27e5 |
554 | #endif |
555 | } |
28757baa |
556 | ; |
557 | |
fa83b5b6 |
558 | startsub: /* NULL */ /* start a regular subroutine scope */ |
a8ff2fa6 |
559 | { $$ = start_subparse(FALSE, 0); |
560 | SAVEFREESV(PL_compcv); } |
f05e27e5 |
561 | |
28757baa |
562 | ; |
563 | |
564 | startanonsub: /* NULL */ /* start an anonymous subroutine scope */ |
a8ff2fa6 |
565 | { $$ = start_subparse(FALSE, CVf_ANON); |
566 | SAVEFREESV(PL_compcv); } |
28757baa |
567 | ; |
568 | |
44a8e56a |
569 | startformsub: /* NULL */ /* start a format subroutine scope */ |
a8ff2fa6 |
570 | { $$ = start_subparse(TRUE, 0); |
571 | SAVEFREESV(PL_compcv); } |
44a8e56a |
572 | ; |
573 | |
891be019 |
574 | /* Name of a subroutine - must be a bareword, could be special */ |
2596d9fe |
575 | subname : WORD { const char *const name = SvPV_nolen_const(((SVOP*)$1)->op_sv); |
e858de61 |
576 | if (strEQ(name, "BEGIN") || strEQ(name, "END") |
3c10abe3 |
577 | || strEQ(name, "INIT") || strEQ(name, "CHECK") |
578 | || strEQ(name, "UNITCHECK")) |
1aff0e91 |
579 | CvSPECIAL_on(PL_compcv); |
28757baa |
580 | $$ = $1; } |
a0d0e21e |
581 | ; |
582 | |
891be019 |
583 | /* Subroutine prototype */ |
4633a7c4 |
584 | proto : /* NULL */ |
bcabcc50 |
585 | { $$ = (OP*)NULL; } |
4633a7c4 |
586 | | THING |
587 | ; |
28757baa |
588 | |
891be019 |
589 | /* Optional list of subroutine attributes */ |
09bef843 |
590 | subattrlist: /* NULL */ |
bcabcc50 |
591 | { $$ = (OP*)NULL; } |
09bef843 |
592 | | COLONATTR THING |
f05e27e5 |
593 | { $$ = $2; |
594 | TOKEN_GETMAD($1,$$,':'); |
595 | } |
09bef843 |
596 | | COLONATTR |
f05e27e5 |
597 | { $$ = IF_MAD( |
598 | newOP(OP_NULL, 0), |
bcabcc50 |
599 | (OP*)NULL |
f05e27e5 |
600 | ); |
601 | TOKEN_GETMAD($1,$$,':'); |
602 | } |
09bef843 |
603 | ; |
604 | |
891be019 |
605 | /* List of attributes for a "my" variable declaration */ |
09bef843 |
606 | myattrlist: COLONATTR THING |
f05e27e5 |
607 | { $$ = $2; |
608 | TOKEN_GETMAD($1,$$,':'); |
609 | } |
09bef843 |
610 | | COLONATTR |
f05e27e5 |
611 | { $$ = IF_MAD( |
612 | newOP(OP_NULL, 0), |
bcabcc50 |
613 | (OP*)NULL |
f05e27e5 |
614 | ); |
615 | TOKEN_GETMAD($1,$$,':'); |
616 | } |
09bef843 |
617 | ; |
618 | |
891be019 |
619 | /* Subroutine body - either null or a block */ |
28757baa |
620 | subbody : block { $$ = $1; } |
f05e27e5 |
621 | | ';' { $$ = IF_MAD( |
622 | newOP(OP_NULL,0), |
bcabcc50 |
623 | (OP*)NULL |
f05e27e5 |
624 | ); |
53a7735b |
625 | PL_parser->expect = XSTATE; |
f05e27e5 |
626 | TOKEN_GETMAD($1,$$,';'); |
627 | } |
8d063cd8 |
628 | ; |
629 | |
a687059c |
630 | package : PACKAGE WORD ';' |
f05e27e5 |
631 | { |
632 | #ifdef MAD |
633 | $$ = package($2); |
634 | token_getmad($1,$$,'o'); |
635 | token_getmad($3,$$,';'); |
636 | #else |
637 | package($2); |
bcabcc50 |
638 | $$ = (OP*)NULL; |
f05e27e5 |
639 | #endif |
640 | } |
a687059c |
641 | ; |
642 | |
718a7425 |
643 | use : USE startsub |
1aff0e91 |
644 | { CvSPECIAL_on(PL_compcv); /* It's a BEGIN {} */ } |
28757baa |
645 | WORD WORD listexpr ';' |
5a5094bd |
646 | { SvREFCNT_inc_simple_void(PL_compcv); |
f05e27e5 |
647 | #ifdef MAD |
718a7425 |
648 | $$ = utilize(IVAL($1), $2, $4, $5, $6); |
f05e27e5 |
649 | token_getmad($1,$$,'o'); |
718a7425 |
650 | token_getmad($7,$$,';'); |
5486870f |
651 | if (PL_parser->rsfp_filters && |
652 | AvFILLp(PL_parser->rsfp_filters) >= 0) |
f05e27e5 |
653 | append_madprops(newMADPROP('!', MAD_PV, "", 0), $$, 0); |
654 | #else |
718a7425 |
655 | utilize(IVAL($1), $2, $4, $5, $6); |
bcabcc50 |
656 | $$ = (OP*)NULL; |
f05e27e5 |
657 | #endif |
658 | } |
85e6fe83 |
659 | ; |
660 | |
891be019 |
661 | /* Ordinary expressions; logical combinations */ |
a0d0e21e |
662 | expr : expr ANDOP expr |
f05e27e5 |
663 | { $$ = newLOGOP(OP_AND, 0, $1, $3); |
664 | TOKEN_GETMAD($2,$$,'o'); |
665 | } |
a0d0e21e |
666 | | expr OROP expr |
f05e27e5 |
667 | { $$ = newLOGOP(IVAL($2), 0, $1, $3); |
668 | TOKEN_GETMAD($2,$$,'o'); |
669 | } |
c963b151 |
670 | | expr DOROP expr |
f05e27e5 |
671 | { $$ = newLOGOP(OP_DOR, 0, $1, $3); |
672 | TOKEN_GETMAD($2,$$,'o'); |
673 | } |
fad39ff1 |
674 | | argexpr %prec PREC_LOW |
a0d0e21e |
675 | ; |
676 | |
891be019 |
677 | /* Expressions are a list of terms joined by commas */ |
a0d0e21e |
678 | argexpr : argexpr ',' |
f05e27e5 |
679 | { |
680 | #ifdef MAD |
681 | OP* op = newNULLLIST(); |
682 | token_getmad($2,op,','); |
683 | $$ = append_elem(OP_LIST, $1, op); |
684 | #else |
685 | $$ = $1; |
686 | #endif |
687 | } |
a0d0e21e |
688 | | argexpr ',' term |
f05e27e5 |
689 | { |
29522234 |
690 | OP* term = $3; |
f05e27e5 |
691 | DO_MAD( |
29522234 |
692 | term = newUNOP(OP_NULL, 0, term); |
693 | token_getmad($2,term,','); |
f05e27e5 |
694 | ) |
29522234 |
695 | $$ = append_elem(OP_LIST, $1, term); |
f05e27e5 |
696 | } |
fad39ff1 |
697 | | term %prec PREC_LOW |
8d063cd8 |
698 | ; |
699 | |
891be019 |
700 | /* List operators */ |
ad4673e5 |
701 | listop : LSTOP indirob argexpr /* map {...} @args or print $fh @args */ |
f05e27e5 |
702 | { $$ = convert(IVAL($1), OPf_STACKED, |
703 | prepend_elem(OP_LIST, newGVREF(IVAL($1),$2), $3) ); |
704 | TOKEN_GETMAD($1,$$,'o'); |
705 | } |
891be019 |
706 | | FUNC '(' indirob expr ')' /* print ($fh @args */ |
f05e27e5 |
707 | { $$ = convert(IVAL($1), OPf_STACKED, |
708 | prepend_elem(OP_LIST, newGVREF(IVAL($1),$3), $4) ); |
709 | TOKEN_GETMAD($1,$$,'o'); |
710 | TOKEN_GETMAD($2,$$,'('); |
711 | TOKEN_GETMAD($5,$$,')'); |
712 | } |
891be019 |
713 | | term ARROW method '(' listexprcom ')' /* $foo->bar(list) */ |
4633a7c4 |
714 | { $$ = convert(OP_ENTERSUB, OPf_STACKED, |
a0d0e21e |
715 | append_elem(OP_LIST, |
55497cff |
716 | prepend_elem(OP_LIST, scalar($1), $5), |
f05e27e5 |
717 | newUNOP(OP_METHOD, 0, $3))); |
718 | TOKEN_GETMAD($2,$$,'A'); |
719 | TOKEN_GETMAD($4,$$,'('); |
720 | TOKEN_GETMAD($6,$$,')'); |
721 | } |
891be019 |
722 | | term ARROW method /* $foo->bar */ |
b1524f17 |
723 | { $$ = convert(OP_ENTERSUB, OPf_STACKED, |
724 | append_elem(OP_LIST, scalar($1), |
f05e27e5 |
725 | newUNOP(OP_METHOD, 0, $3))); |
726 | TOKEN_GETMAD($2,$$,'A'); |
727 | } |
891be019 |
728 | | METHOD indirob listexpr /* new Class @args */ |
4633a7c4 |
729 | { $$ = convert(OP_ENTERSUB, OPf_STACKED, |
a0d0e21e |
730 | append_elem(OP_LIST, |
4633a7c4 |
731 | prepend_elem(OP_LIST, $2, $3), |
f05e27e5 |
732 | newUNOP(OP_METHOD, 0, $1))); |
733 | } |
891be019 |
734 | | FUNCMETH indirob '(' listexprcom ')' /* method $object (@args) */ |
4633a7c4 |
735 | { $$ = convert(OP_ENTERSUB, OPf_STACKED, |
a0d0e21e |
736 | append_elem(OP_LIST, |
4633a7c4 |
737 | prepend_elem(OP_LIST, $2, $4), |
f05e27e5 |
738 | newUNOP(OP_METHOD, 0, $1))); |
739 | TOKEN_GETMAD($3,$$,'('); |
740 | TOKEN_GETMAD($5,$$,')'); |
741 | } |
891be019 |
742 | | LSTOP listexpr /* print @args */ |
f05e27e5 |
743 | { $$ = convert(IVAL($1), 0, $2); |
744 | TOKEN_GETMAD($1,$$,'o'); |
745 | } |
891be019 |
746 | | FUNC '(' listexprcom ')' /* print (@args) */ |
f05e27e5 |
747 | { $$ = convert(IVAL($1), 0, $3); |
748 | TOKEN_GETMAD($1,$$,'o'); |
749 | TOKEN_GETMAD($2,$$,'('); |
750 | TOKEN_GETMAD($4,$$,')'); |
751 | } |
718a7425 |
752 | | LSTOPSUB startanonsub block /* sub f(&@); f { foo } ... */ |
5a5094bd |
753 | { SvREFCNT_inc_simple_void(PL_compcv); |
bcabcc50 |
754 | $<opval>$ = newANONATTRSUB($2, 0, (OP*)NULL, $3); } |
891be019 |
755 | listexpr %prec LSTOP /* ... @bar */ |
4633a7c4 |
756 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
28757baa |
757 | append_elem(OP_LIST, |
29522234 |
758 | prepend_elem(OP_LIST, $<opval>4, $5), $1)); |
f05e27e5 |
759 | } |
a687059c |
760 | ; |
761 | |
891be019 |
762 | /* Names of methods. May use $object->$methodname */ |
a0d0e21e |
763 | method : METHOD |
764 | | scalar |
765 | ; |
766 | |
891be019 |
767 | /* Some kind of subscripted expression */ |
768 | subscripted: star '{' expr ';' '}' /* *main::{something} */ |
769 | /* In this and all the hash accessors, ';' is |
770 | * provided by the tokeniser */ |
264e1af3 |
771 | { $$ = newBINOP(OP_GELEM, 0, $1, scalar($3)); |
53a7735b |
772 | PL_parser->expect = XOPERATOR; |
f05e27e5 |
773 | TOKEN_GETMAD($2,$$,'{'); |
774 | TOKEN_GETMAD($4,$$,';'); |
775 | TOKEN_GETMAD($5,$$,'}'); |
776 | } |
891be019 |
777 | | scalar '[' expr ']' /* $array[$element] */ |
f05e27e5 |
778 | { $$ = newBINOP(OP_AELEM, 0, oopsAV($1), scalar($3)); |
779 | TOKEN_GETMAD($2,$$,'['); |
780 | TOKEN_GETMAD($4,$$,']'); |
781 | } |
891be019 |
782 | | term ARROW '[' expr ']' /* somearef->[$element] */ |
fad39ff1 |
783 | { $$ = newBINOP(OP_AELEM, 0, |
784 | ref(newAVREF($1),OP_RV2AV), |
f05e27e5 |
785 | scalar($4)); |
786 | TOKEN_GETMAD($2,$$,'a'); |
787 | TOKEN_GETMAD($3,$$,'['); |
788 | TOKEN_GETMAD($5,$$,']'); |
789 | } |
891be019 |
790 | | subscripted '[' expr ']' /* $foo->[$bar]->[$baz] */ |
fad39ff1 |
791 | { $$ = newBINOP(OP_AELEM, 0, |
792 | ref(newAVREF($1),OP_RV2AV), |
f05e27e5 |
793 | scalar($3)); |
794 | TOKEN_GETMAD($2,$$,'['); |
795 | TOKEN_GETMAD($4,$$,']'); |
796 | } |
891be019 |
797 | | scalar '{' expr ';' '}' /* $foo->{bar();} */ |
fad39ff1 |
798 | { $$ = newBINOP(OP_HELEM, 0, oopsHV($1), jmaybe($3)); |
53a7735b |
799 | PL_parser->expect = XOPERATOR; |
f05e27e5 |
800 | TOKEN_GETMAD($2,$$,'{'); |
801 | TOKEN_GETMAD($4,$$,';'); |
802 | TOKEN_GETMAD($5,$$,'}'); |
803 | } |
891be019 |
804 | | term ARROW '{' expr ';' '}' /* somehref->{bar();} */ |
fad39ff1 |
805 | { $$ = newBINOP(OP_HELEM, 0, |
806 | ref(newHVREF($1),OP_RV2HV), |
807 | jmaybe($4)); |
53a7735b |
808 | PL_parser->expect = XOPERATOR; |
f05e27e5 |
809 | TOKEN_GETMAD($2,$$,'a'); |
810 | TOKEN_GETMAD($3,$$,'{'); |
811 | TOKEN_GETMAD($5,$$,';'); |
812 | TOKEN_GETMAD($6,$$,'}'); |
813 | } |
891be019 |
814 | | subscripted '{' expr ';' '}' /* $foo->[bar]->{baz;} */ |
fad39ff1 |
815 | { $$ = newBINOP(OP_HELEM, 0, |
816 | ref(newHVREF($1),OP_RV2HV), |
817 | jmaybe($3)); |
53a7735b |
818 | PL_parser->expect = XOPERATOR; |
f05e27e5 |
819 | TOKEN_GETMAD($2,$$,'{'); |
820 | TOKEN_GETMAD($4,$$,';'); |
821 | TOKEN_GETMAD($5,$$,'}'); |
822 | } |
891be019 |
823 | | term ARROW '(' ')' /* $subref->() */ |
fad39ff1 |
824 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
f05e27e5 |
825 | newCVREF(0, scalar($1))); |
826 | TOKEN_GETMAD($2,$$,'a'); |
827 | TOKEN_GETMAD($3,$$,'('); |
828 | TOKEN_GETMAD($4,$$,')'); |
829 | } |
891be019 |
830 | | term ARROW '(' expr ')' /* $subref->(@args) */ |
fad39ff1 |
831 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
832 | append_elem(OP_LIST, $4, |
f05e27e5 |
833 | newCVREF(0, scalar($1)))); |
834 | TOKEN_GETMAD($2,$$,'a'); |
835 | TOKEN_GETMAD($3,$$,'('); |
836 | TOKEN_GETMAD($5,$$,')'); |
837 | } |
fad39ff1 |
838 | |
891be019 |
839 | | subscripted '(' expr ')' /* $foo->{bar}->(@args) */ |
fad39ff1 |
840 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
841 | append_elem(OP_LIST, $3, |
f05e27e5 |
842 | newCVREF(0, scalar($1)))); |
843 | TOKEN_GETMAD($2,$$,'('); |
844 | TOKEN_GETMAD($4,$$,')'); |
845 | } |
891be019 |
846 | | subscripted '(' ')' /* $foo->{bar}->() */ |
fad39ff1 |
847 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
f05e27e5 |
848 | newCVREF(0, scalar($1))); |
849 | TOKEN_GETMAD($2,$$,'('); |
850 | TOKEN_GETMAD($3,$$,')'); |
851 | } |
9a9798c2 |
852 | | '(' expr ')' '[' expr ']' /* list slice */ |
f05e27e5 |
853 | { $$ = newSLICEOP(0, $5, $2); |
854 | TOKEN_GETMAD($1,$$,'('); |
855 | TOKEN_GETMAD($3,$$,')'); |
856 | TOKEN_GETMAD($4,$$,'['); |
857 | TOKEN_GETMAD($6,$$,']'); |
858 | } |
9a9798c2 |
859 | | '(' ')' '[' expr ']' /* empty list slice! */ |
bcabcc50 |
860 | { $$ = newSLICEOP(0, $4, (OP*)NULL); |
f05e27e5 |
861 | TOKEN_GETMAD($1,$$,'('); |
862 | TOKEN_GETMAD($2,$$,')'); |
863 | TOKEN_GETMAD($3,$$,'['); |
864 | TOKEN_GETMAD($5,$$,']'); |
865 | } |
891be019 |
866 | ; |
fad39ff1 |
867 | |
891be019 |
868 | /* Binary operators between terms */ |
f05e27e5 |
869 | termbinop: term ASSIGNOP term /* $x = $y */ |
870 | { $$ = newASSIGNOP(OPf_STACKED, $1, IVAL($2), $3); |
871 | TOKEN_GETMAD($2,$$,'o'); |
872 | } |
891be019 |
873 | | term POWOP term /* $x ** $y */ |
f05e27e5 |
874 | { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3)); |
875 | TOKEN_GETMAD($2,$$,'o'); |
876 | } |
891be019 |
877 | | term MULOP term /* $x * $y, $x x $y */ |
f05e27e5 |
878 | { if (IVAL($2) != OP_REPEAT) |
79072805 |
879 | scalar($1); |
f05e27e5 |
880 | $$ = newBINOP(IVAL($2), 0, $1, scalar($3)); |
881 | TOKEN_GETMAD($2,$$,'o'); |
882 | } |
891be019 |
883 | | term ADDOP term /* $x + $y */ |
f05e27e5 |
884 | { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3)); |
885 | TOKEN_GETMAD($2,$$,'o'); |
886 | } |
891be019 |
887 | | term SHIFTOP term /* $x >> $y, $x << $y */ |
f05e27e5 |
888 | { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3)); |
889 | TOKEN_GETMAD($2,$$,'o'); |
890 | } |
891be019 |
891 | | term RELOP term /* $x > $y, etc. */ |
f05e27e5 |
892 | { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3)); |
893 | TOKEN_GETMAD($2,$$,'o'); |
894 | } |
891be019 |
895 | | term EQOP term /* $x == $y, $x eq $y */ |
f05e27e5 |
896 | { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3)); |
897 | TOKEN_GETMAD($2,$$,'o'); |
898 | } |
891be019 |
899 | | term BITANDOP term /* $x & $y */ |
f05e27e5 |
900 | { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3)); |
901 | TOKEN_GETMAD($2,$$,'o'); |
902 | } |
891be019 |
903 | | term BITOROP term /* $x | $y */ |
f05e27e5 |
904 | { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3)); |
905 | TOKEN_GETMAD($2,$$,'o'); |
906 | } |
891be019 |
907 | | term DOTDOT term /* $x..$y, $x...$y */ |
f05e27e5 |
908 | { |
909 | $$ = newRANGE(IVAL($2), scalar($1), scalar($3)); |
035e2bcc |
910 | DO_MAD({ |
f05e27e5 |
911 | UNOP *op; |
912 | op = (UNOP*)$$; |
913 | op = (UNOP*)op->op_first; /* get to flop */ |
914 | op = (UNOP*)op->op_first; /* get to flip */ |
915 | op = (UNOP*)op->op_first; /* get to range */ |
916 | token_getmad($2,(OP*)op,'o'); |
035e2bcc |
917 | }) |
f05e27e5 |
918 | } |
891be019 |
919 | | term ANDAND term /* $x && $y */ |
f05e27e5 |
920 | { $$ = newLOGOP(OP_AND, 0, $1, $3); |
921 | TOKEN_GETMAD($2,$$,'o'); |
922 | } |
891be019 |
923 | | term OROR term /* $x || $y */ |
f05e27e5 |
924 | { $$ = newLOGOP(OP_OR, 0, $1, $3); |
925 | TOKEN_GETMAD($2,$$,'o'); |
926 | } |
c963b151 |
927 | | term DORDOR term /* $x // $y */ |
f05e27e5 |
928 | { $$ = newLOGOP(OP_DOR, 0, $1, $3); |
929 | TOKEN_GETMAD($2,$$,'o'); |
930 | } |
891be019 |
931 | | term MATCHOP term /* $x =~ /$y/ */ |
f05e27e5 |
932 | { $$ = bind_match(IVAL($2), $1, $3); |
933 | TOKEN_GETMAD($2, |
934 | ($$->op_type == OP_NOT |
935 | ? ((UNOP*)$$)->op_first : $$), |
936 | '~'); |
937 | } |
891be019 |
938 | ; |
8d063cd8 |
939 | |
891be019 |
940 | /* Unary operators and terms */ |
941 | termunop : '-' term %prec UMINUS /* -$x */ |
f05e27e5 |
942 | { $$ = newUNOP(OP_NEGATE, 0, scalar($2)); |
943 | TOKEN_GETMAD($1,$$,'o'); |
944 | } |
891be019 |
945 | | '+' term %prec UMINUS /* +$x */ |
f05e27e5 |
946 | { $$ = IF_MAD( |
947 | newUNOP(OP_NULL, 0, $2), |
948 | $2 |
949 | ); |
950 | TOKEN_GETMAD($1,$$,'+'); |
951 | } |
891be019 |
952 | | '!' term /* !$x */ |
f05e27e5 |
953 | { $$ = newUNOP(OP_NOT, 0, scalar($2)); |
954 | TOKEN_GETMAD($1,$$,'o'); |
955 | } |
891be019 |
956 | | '~' term /* ~$x */ |
f05e27e5 |
957 | { $$ = newUNOP(OP_COMPLEMENT, 0, scalar($2)); |
958 | TOKEN_GETMAD($1,$$,'o'); |
959 | } |
891be019 |
960 | | term POSTINC /* $x++ */ |
79072805 |
961 | { $$ = newUNOP(OP_POSTINC, 0, |
f05e27e5 |
962 | mod(scalar($1), OP_POSTINC)); |
963 | TOKEN_GETMAD($2,$$,'o'); |
964 | } |
891be019 |
965 | | term POSTDEC /* $x-- */ |
79072805 |
966 | { $$ = newUNOP(OP_POSTDEC, 0, |
f05e27e5 |
967 | mod(scalar($1), OP_POSTDEC)); |
968 | TOKEN_GETMAD($2,$$,'o'); |
969 | } |
891be019 |
970 | | PREINC term /* ++$x */ |
79072805 |
971 | { $$ = newUNOP(OP_PREINC, 0, |
f05e27e5 |
972 | mod(scalar($2), OP_PREINC)); |
973 | TOKEN_GETMAD($1,$$,'o'); |
974 | } |
891be019 |
975 | | PREDEC term /* --$x */ |
79072805 |
976 | { $$ = newUNOP(OP_PREDEC, 0, |
f05e27e5 |
977 | mod(scalar($2), OP_PREDEC)); |
978 | TOKEN_GETMAD($1,$$,'o'); |
979 | } |
891be019 |
980 | |
981 | ; |
982 | |
983 | /* Constructors for anonymous data */ |
984 | anonymous: '[' expr ']' |
f05e27e5 |
985 | { $$ = newANONLIST($2); |
986 | TOKEN_GETMAD($1,$$,'['); |
987 | TOKEN_GETMAD($3,$$,']'); |
988 | } |
891be019 |
989 | | '[' ']' |
bcabcc50 |
990 | { $$ = newANONLIST((OP*)NULL); |
f05e27e5 |
991 | TOKEN_GETMAD($1,$$,'['); |
992 | TOKEN_GETMAD($2,$$,']'); |
993 | } |
891be019 |
994 | | HASHBRACK expr ';' '}' %prec '(' /* { foo => "Bar" } */ |
f05e27e5 |
995 | { $$ = newANONHASH($2); |
996 | TOKEN_GETMAD($1,$$,'{'); |
997 | TOKEN_GETMAD($3,$$,';'); |
998 | TOKEN_GETMAD($4,$$,'}'); |
999 | } |
891be019 |
1000 | | HASHBRACK ';' '}' %prec '(' /* { } (';' by tokener) */ |
bcabcc50 |
1001 | { $$ = newANONHASH((OP*)NULL); |
f05e27e5 |
1002 | TOKEN_GETMAD($1,$$,'{'); |
1003 | TOKEN_GETMAD($2,$$,';'); |
1004 | TOKEN_GETMAD($3,$$,'}'); |
1005 | } |
718a7425 |
1006 | | ANONSUB startanonsub proto subattrlist block %prec '(' |
5a5094bd |
1007 | { SvREFCNT_inc_simple_void(PL_compcv); |
718a7425 |
1008 | $$ = newANONATTRSUB($2, $3, $4, $5); |
f05e27e5 |
1009 | TOKEN_GETMAD($1,$$,'o'); |
718a7425 |
1010 | OP_GETMAD($3,$$,'s'); |
1011 | OP_GETMAD($4,$$,'a'); |
f05e27e5 |
1012 | } |
891be019 |
1013 | |
1014 | ; |
1015 | |
1016 | /* Things called with "do" */ |
1017 | termdo : DO term %prec UNIOP /* do $filename */ |
123d08c9 |
1018 | { $$ = dofile($2, IVAL($1)); |
f05e27e5 |
1019 | TOKEN_GETMAD($1,$$,'o'); |
1020 | } |
891be019 |
1021 | | DO block %prec '(' /* do { code */ |
f05e27e5 |
1022 | { $$ = newUNOP(OP_NULL, OPf_SPECIAL, scope($2)); |
1023 | TOKEN_GETMAD($1,$$,'D'); |
1024 | } |
891be019 |
1025 | | DO WORD '(' ')' /* do somesub() */ |
1026 | { $$ = newUNOP(OP_ENTERSUB, |
1027 | OPf_SPECIAL|OPf_STACKED, |
1028 | prepend_elem(OP_LIST, |
1029 | scalar(newCVREF( |
1030 | (OPpENTERSUB_AMPER<<8), |
1031 | scalar($2) |
bcabcc50 |
1032 | )),(OP*)NULL)); dep(); |
f05e27e5 |
1033 | TOKEN_GETMAD($1,$$,'o'); |
1034 | TOKEN_GETMAD($3,$$,'('); |
1035 | TOKEN_GETMAD($4,$$,')'); |
1036 | } |
891be019 |
1037 | | DO WORD '(' expr ')' /* do somesub(@args) */ |
1038 | { $$ = newUNOP(OP_ENTERSUB, |
1039 | OPf_SPECIAL|OPf_STACKED, |
1040 | append_elem(OP_LIST, |
1041 | $4, |
1042 | scalar(newCVREF( |
1043 | (OPpENTERSUB_AMPER<<8), |
1044 | scalar($2) |
f05e27e5 |
1045 | )))); dep(); |
1046 | TOKEN_GETMAD($1,$$,'o'); |
1047 | TOKEN_GETMAD($3,$$,'('); |
1048 | TOKEN_GETMAD($5,$$,')'); |
1049 | } |
891be019 |
1050 | | DO scalar '(' ')' /* do $subref () */ |
1051 | { $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED, |
1052 | prepend_elem(OP_LIST, |
bcabcc50 |
1053 | scalar(newCVREF(0,scalar($2))), (OP*)NULL)); dep(); |
f05e27e5 |
1054 | TOKEN_GETMAD($1,$$,'o'); |
1055 | TOKEN_GETMAD($3,$$,'('); |
1056 | TOKEN_GETMAD($4,$$,')'); |
1057 | } |
891be019 |
1058 | | DO scalar '(' expr ')' /* do $subref (@args) */ |
1059 | { $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED, |
1060 | prepend_elem(OP_LIST, |
1061 | $4, |
f05e27e5 |
1062 | scalar(newCVREF(0,scalar($2))))); dep(); |
1063 | TOKEN_GETMAD($1,$$,'o'); |
1064 | TOKEN_GETMAD($3,$$,'('); |
1065 | TOKEN_GETMAD($5,$$,')'); |
1066 | } |
891be019 |
1067 | |
1068 | ; |
1069 | |
1070 | term : termbinop |
1071 | | termunop |
1072 | | anonymous |
1073 | | termdo |
e9bdcc27 |
1074 | | term '?' term ':' term |
f05e27e5 |
1075 | { $$ = newCONDOP(0, $1, $3, $5); |
1076 | TOKEN_GETMAD($2,$$,'?'); |
1077 | TOKEN_GETMAD($4,$$,':'); |
1078 | } |
891be019 |
1079 | | REFGEN term /* \$x, \@y, \%z */ |
f05e27e5 |
1080 | { $$ = newUNOP(OP_REFGEN, 0, mod($2,OP_REFGEN)); |
1081 | TOKEN_GETMAD($1,$$,'o'); |
1082 | } |
09bef843 |
1083 | | myattrterm %prec UNIOP |
1084 | { $$ = $1; } |
1085 | | LOCAL term %prec UNIOP |
f05e27e5 |
1086 | { $$ = localize($2,IVAL($1)); |
dde83331 |
1087 | TOKEN_GETMAD($1,$$,'k'); |
f05e27e5 |
1088 | } |
a0d0e21e |
1089 | | '(' expr ')' |
f05e27e5 |
1090 | { $$ = sawparens(IF_MAD(newUNOP(OP_NULL,0,$2), $2)); |
1091 | TOKEN_GETMAD($1,$$,'('); |
1092 | TOKEN_GETMAD($3,$$,')'); |
1093 | } |
8d063cd8 |
1094 | | '(' ')' |
f05e27e5 |
1095 | { $$ = sawparens(newNULLLIST()); |
1096 | TOKEN_GETMAD($1,$$,'('); |
1097 | TOKEN_GETMAD($2,$$,')'); |
1098 | } |
79072805 |
1099 | | scalar %prec '(' |
8d063cd8 |
1100 | { $$ = $1; } |
79072805 |
1101 | | star %prec '(' |
8d063cd8 |
1102 | { $$ = $1; } |
79072805 |
1103 | | hsh %prec '(' |
8d063cd8 |
1104 | { $$ = $1; } |
79072805 |
1105 | | ary %prec '(' |
8d063cd8 |
1106 | { $$ = $1; } |
891be019 |
1107 | | arylen %prec '(' /* $#x, $#{ something } */ |
79072805 |
1108 | { $$ = newUNOP(OP_AV2ARYLEN, 0, ref($1, OP_AV2ARYLEN));} |
fad39ff1 |
1109 | | subscripted |
1110 | { $$ = $1; } |
891be019 |
1111 | | ary '[' expr ']' /* array slice */ |
79072805 |
1112 | { $$ = prepend_elem(OP_ASLICE, |
1113 | newOP(OP_PUSHMARK, 0), |
79072805 |
1114 | newLISTOP(OP_ASLICE, 0, |
1115 | list($3), |
f05e27e5 |
1116 | ref($1, OP_ASLICE))); |
1117 | TOKEN_GETMAD($2,$$,'['); |
1118 | TOKEN_GETMAD($4,$$,']'); |
1119 | } |
891be019 |
1120 | | ary '{' expr ';' '}' /* @hash{@keys} */ |
79072805 |
1121 | { $$ = prepend_elem(OP_HSLICE, |
1122 | newOP(OP_PUSHMARK, 0), |
79072805 |
1123 | newLISTOP(OP_HSLICE, 0, |
1124 | list($3), |
a0d0e21e |
1125 | ref(oopsHV($1), OP_HSLICE))); |
53a7735b |
1126 | PL_parser->expect = XOPERATOR; |
f05e27e5 |
1127 | TOKEN_GETMAD($2,$$,'{'); |
1128 | TOKEN_GETMAD($4,$$,';'); |
1129 | TOKEN_GETMAD($5,$$,'}'); |
1130 | } |
79072805 |
1131 | | THING %prec '(' |
1132 | { $$ = $1; } |
891be019 |
1133 | | amper /* &foo; */ |
c07a80fd |
1134 | { $$ = newUNOP(OP_ENTERSUB, 0, scalar($1)); } |
ecb2f335 |
1135 | | amper '(' ')' /* &foo() */ |
f05e27e5 |
1136 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, scalar($1)); |
1137 | TOKEN_GETMAD($2,$$,'('); |
1138 | TOKEN_GETMAD($3,$$,')'); |
1139 | } |
891be019 |
1140 | | amper '(' expr ')' /* &foo(@args) */ |
f05e27e5 |
1141 | { |
1142 | $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
1143 | append_elem(OP_LIST, $3, scalar($1))); |
035e2bcc |
1144 | DO_MAD({ |
f05e27e5 |
1145 | OP* op = $$; |
1146 | if (op->op_type == OP_CONST) { /* defeat const fold */ |
1147 | op = (OP*)op->op_madprop->mad_val; |
1148 | } |
1149 | token_getmad($2,op,'('); |
1150 | token_getmad($4,op,')'); |
035e2bcc |
1151 | }) |
f05e27e5 |
1152 | } |
891be019 |
1153 | | NOAMP WORD listexpr /* foo(@args) */ |
a0d0e21e |
1154 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
f05e27e5 |
1155 | append_elem(OP_LIST, $3, scalar($2))); |
1156 | TOKEN_GETMAD($1,$$,'o'); |
1157 | } |
891be019 |
1158 | | LOOPEX /* loop exiting command (goto, last, dump, etc) */ |
f05e27e5 |
1159 | { $$ = newOP(IVAL($1), OPf_SPECIAL); |
1160 | PL_hints |= HINT_BLOCK_SCOPE; |
1161 | TOKEN_GETMAD($1,$$,'o'); |
1162 | } |
a0d0e21e |
1163 | | LOOPEX term |
f05e27e5 |
1164 | { $$ = newLOOPEX(IVAL($1),$2); |
1165 | TOKEN_GETMAD($1,$$,'o'); |
1166 | } |
891be019 |
1167 | | NOTOP argexpr /* not $foo */ |
f05e27e5 |
1168 | { $$ = newUNOP(OP_NOT, 0, scalar($2)); |
1169 | TOKEN_GETMAD($1,$$,'o'); |
1170 | } |
891be019 |
1171 | | UNIOP /* Unary op, $_ implied */ |
f05e27e5 |
1172 | { $$ = newOP(IVAL($1), 0); |
1173 | TOKEN_GETMAD($1,$$,'o'); |
1174 | } |
1175 | | UNIOP block /* eval { foo }* */ |
1176 | { $$ = newUNOP(IVAL($1), 0, $2); |
1177 | TOKEN_GETMAD($1,$$,'o'); |
1178 | } |
891be019 |
1179 | | UNIOP term /* Unary op */ |
f05e27e5 |
1180 | { $$ = newUNOP(IVAL($1), 0, $2); |
1181 | TOKEN_GETMAD($1,$$,'o'); |
1182 | } |
d2fdf8fd |
1183 | | REQUIRE /* require, $_ implied */ |
1184 | { $$ = newOP(OP_REQUIRE, $1 ? OPf_SPECIAL : 0); |
1185 | TOKEN_GETMAD($1,$$,'o'); |
1186 | } |
1187 | | REQUIRE term /* require Foo */ |
1188 | { $$ = newUNOP(OP_REQUIRE, $1 ? OPf_SPECIAL : 0, $2); |
1189 | TOKEN_GETMAD($1,$$,'o'); |
1190 | } |
3cd0a11a |
1191 | | UNIOPSUB |
1192 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, scalar($1)); } |
891be019 |
1193 | | UNIOPSUB term /* Sub treated as unop */ |
4633a7c4 |
1194 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
1195 | append_elem(OP_LIST, $2, scalar($1))); } |
891be019 |
1196 | | FUNC0 /* Nullary operator */ |
f05e27e5 |
1197 | { $$ = newOP(IVAL($1), 0); |
1198 | TOKEN_GETMAD($1,$$,'o'); |
1199 | } |
ae986130 |
1200 | | FUNC0 '(' ')' |
f05e27e5 |
1201 | { $$ = newOP(IVAL($1), 0); |
1202 | TOKEN_GETMAD($1,$$,'o'); |
1203 | TOKEN_GETMAD($2,$$,'('); |
1204 | TOKEN_GETMAD($3,$$,')'); |
1205 | } |
891be019 |
1206 | | FUNC0SUB /* Sub treated as nullop */ |
28757baa |
1207 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
4633a7c4 |
1208 | scalar($1)); } |
891be019 |
1209 | | FUNC1 '(' ')' /* not () */ |
f05e27e5 |
1210 | { $$ = (IVAL($1) == OP_NOT) |
1211 | ? newUNOP(IVAL($1), 0, newSVOP(OP_CONST, 0, newSViv(0))) |
1212 | : newOP(IVAL($1), OPf_SPECIAL); |
1213 | |
1214 | TOKEN_GETMAD($1,$$,'o'); |
1215 | TOKEN_GETMAD($2,$$,'('); |
1216 | TOKEN_GETMAD($3,$$,')'); |
1217 | } |
891be019 |
1218 | | FUNC1 '(' expr ')' /* not($foo) */ |
f05e27e5 |
1219 | { $$ = newUNOP(IVAL($1), 0, $3); |
1220 | TOKEN_GETMAD($1,$$,'o'); |
1221 | TOKEN_GETMAD($2,$$,'('); |
1222 | TOKEN_GETMAD($4,$$,')'); |
1223 | } |
1224 | | PMFUNC '(' argexpr ')' /* m//, s///, tr/// */ |
1225 | { $$ = pmruntime($1, $3, 1); |
1226 | TOKEN_GETMAD($2,$$,'('); |
1227 | TOKEN_GETMAD($4,$$,')'); |
1228 | } |
79072805 |
1229 | | WORD |
378cc40b |
1230 | | listop |
be25f609 |
1231 | | YADAYADA |
1232 | { |
1233 | $$ = newLISTOP(OP_DIE, 0, newOP(OP_PUSHMARK, 0), |
1234 | newSVOP(OP_CONST, 0, newSVpvs("Unimplemented"))); |
1235 | } |
8d063cd8 |
1236 | ; |
1237 | |
891be019 |
1238 | /* "my" declarations, with optional attributes */ |
09bef843 |
1239 | myattrterm: MY myterm myattrlist |
f05e27e5 |
1240 | { $$ = my_attrs($2,$3); |
1241 | DO_MAD( |
1242 | token_getmad($1,$$,'d'); |
1243 | append_madprops($3->op_madprop, $$, 'a'); |
1244 | $3->op_madprop = 0; |
1245 | ) |
1246 | } |
09bef843 |
1247 | | MY myterm |
f05e27e5 |
1248 | { $$ = localize($2,IVAL($1)); |
1249 | TOKEN_GETMAD($1,$$,'d'); |
1250 | } |
09bef843 |
1251 | ; |
1252 | |
891be019 |
1253 | /* Things that can be "my"'d */ |
09bef843 |
1254 | myterm : '(' expr ')' |
f05e27e5 |
1255 | { $$ = sawparens($2); |
1256 | TOKEN_GETMAD($1,$$,'('); |
1257 | TOKEN_GETMAD($3,$$,')'); |
1258 | } |
09bef843 |
1259 | | '(' ')' |
f05e27e5 |
1260 | { $$ = sawparens(newNULLLIST()); |
1261 | TOKEN_GETMAD($1,$$,'('); |
1262 | TOKEN_GETMAD($2,$$,')'); |
1263 | } |
09bef843 |
1264 | | scalar %prec '(' |
1265 | { $$ = $1; } |
1266 | | hsh %prec '(' |
1267 | { $$ = $1; } |
1268 | | ary %prec '(' |
1269 | { $$ = $1; } |
1270 | ; |
1271 | |
891be019 |
1272 | /* Basic list expressions */ |
fad39ff1 |
1273 | listexpr: /* NULL */ %prec PREC_LOW |
bcabcc50 |
1274 | { $$ = (OP*)NULL; } |
fad39ff1 |
1275 | | argexpr %prec PREC_LOW |
a0d0e21e |
1276 | { $$ = $1; } |
1277 | ; |
1278 | |
1279 | listexprcom: /* NULL */ |
bcabcc50 |
1280 | { $$ = (OP*)NULL; } |
79072805 |
1281 | | expr |
1282 | { $$ = $1; } |
a0d0e21e |
1283 | | expr ',' |
f05e27e5 |
1284 | { |
1285 | #ifdef MAD |
1286 | OP* op = newNULLLIST(); |
1287 | token_getmad($2,op,','); |
1288 | $$ = append_elem(OP_LIST, $1, op); |
1289 | #else |
1290 | $$ = $1; |
1291 | #endif |
1292 | |
1293 | } |
79072805 |
1294 | ; |
1295 | |
891be019 |
1296 | /* A little bit of trickery to make "for my $foo (@bar)" actually be |
1297 | lexical */ |
55497cff |
1298 | my_scalar: scalar |
12bd6ede |
1299 | { PL_parser->in_my = 0; $$ = my($1); } |
55497cff |
1300 | ; |
1301 | |
79072805 |
1302 | amper : '&' indirob |
f05e27e5 |
1303 | { $$ = newCVREF(IVAL($1),$2); |
1304 | TOKEN_GETMAD($1,$$,'&'); |
1305 | } |
a687059c |
1306 | ; |
1307 | |
79072805 |
1308 | scalar : '$' indirob |
f05e27e5 |
1309 | { $$ = newSVREF($2); |
1310 | TOKEN_GETMAD($1,$$,'$'); |
1311 | } |
a687059c |
1312 | ; |
1313 | |
79072805 |
1314 | ary : '@' indirob |
f05e27e5 |
1315 | { $$ = newAVREF($2); |
1316 | TOKEN_GETMAD($1,$$,'@'); |
1317 | } |
79072805 |
1318 | ; |
1319 | |
1320 | hsh : '%' indirob |
f05e27e5 |
1321 | { $$ = newHVREF($2); |
1322 | TOKEN_GETMAD($1,$$,'%'); |
1323 | } |
79072805 |
1324 | ; |
1325 | |
1326 | arylen : DOLSHARP indirob |
f05e27e5 |
1327 | { $$ = newAVREF($2); |
1328 | TOKEN_GETMAD($1,$$,'l'); |
1329 | } |
79072805 |
1330 | ; |
1331 | |
1332 | star : '*' indirob |
f05e27e5 |
1333 | { $$ = newGVREF(0,$2); |
1334 | TOKEN_GETMAD($1,$$,'*'); |
1335 | } |
79072805 |
1336 | ; |
1337 | |
891be019 |
1338 | /* Indirect objects */ |
79072805 |
1339 | indirob : WORD |
1340 | { $$ = scalar($1); } |
fad39ff1 |
1341 | | scalar %prec PREC_LOW |
f05e27e5 |
1342 | { $$ = scalar($1); } |
79072805 |
1343 | | block |
a0d0e21e |
1344 | { $$ = scope($1); } |
79072805 |
1345 | |
93a17b20 |
1346 | | PRIVATEREF |
1347 | { $$ = $1; } |
8d063cd8 |
1348 | ; |