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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; |
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52 | TOKEN* i_tkval; |
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53 | #else |
54 | char *p_tkval; |
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55 | I32 i_tkval; |
56 | #endif |
57 | #ifdef PERL_MAD |
58 | TOKEN* tkval; |
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59 | #endif |
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60 | } |
61 | |
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62 | %token <i_tkval> '{' '}' '[' ']' '-' '+' '$' '@' '%' '*' '&' ';' |
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63 | |
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64 | %token <opval> WORD METHOD FUNCMETH THING PMFUNC PRIVATEREF |
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65 | %token <opval> FUNC0SUB UNIOPSUB LSTOPSUB |
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66 | %token <p_tkval> LABEL |
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67 | %token <i_tkval> FORMAT SUB ANONSUB PACKAGE USE |
68 | %token <i_tkval> WHILE UNTIL IF UNLESS ELSE ELSIF CONTINUE FOR |
69 | %token <i_tkval> GIVEN WHEN DEFAULT |
70 | %token <i_tkval> LOOPEX DOTDOT |
71 | %token <i_tkval> FUNC0 FUNC1 FUNC UNIOP LSTOP |
72 | %token <i_tkval> RELOP EQOP MULOP ADDOP |
73 | %token <i_tkval> DOLSHARP DO HASHBRACK NOAMP |
74 | %token <i_tkval> LOCAL MY MYSUB REQUIRE |
75 | %token <i_tkval> COLONATTR |
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76 | |
77 | %type <ival> prog progstart remember mremember savescope |
78 | %type <ival> startsub startanonsub startformsub |
79 | /* FIXME for MAD - are these two ival? */ |
80 | %type <ival> mydefsv mintro |
81 | |
82 | %type <opval> decl format subrout mysubrout package use peg |
83 | |
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84 | %type <opval> block mblock lineseq line loop cond else |
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85 | %type <opval> expr term subscripted scalar ary hsh arylen star amper sideff |
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86 | %type <opval> argexpr nexpr texpr iexpr mexpr mnexpr miexpr |
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87 | %type <opval> listexpr listexprcom indirob listop method |
88 | %type <opval> formname subname proto subbody cont my_scalar |
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89 | %type <opval> subattrlist myattrlist myattrterm myterm |
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90 | %type <opval> termbinop termunop anonymous termdo |
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91 | %type <opval> switch case |
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92 | %type <p_tkval> label |
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93 | |
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94 | %nonassoc <i_tkval> PREC_LOW |
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95 | %nonassoc LOOPEX |
96 | |
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97 | %left <i_tkval> OROP DOROP |
98 | %left <i_tkval> ANDOP |
99 | %right <i_tkval> NOTOP |
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100 | %nonassoc LSTOP LSTOPSUB |
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101 | %left <i_tkval> ',' |
102 | %right <i_tkval> ASSIGNOP |
103 | %right <i_tkval> '?' ':' |
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104 | %nonassoc DOTDOT |
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105 | %left <i_tkval> OROR DORDOR |
106 | %left <i_tkval> ANDAND |
107 | %left <i_tkval> BITOROP |
108 | %left <i_tkval> BITANDOP |
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109 | %nonassoc EQOP |
110 | %nonassoc RELOP |
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111 | %nonassoc UNIOP UNIOPSUB |
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112 | %nonassoc REQUIRE |
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113 | %left <i_tkval> SHIFTOP |
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114 | %left ADDOP |
115 | %left MULOP |
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116 | %left <i_tkval> MATCHOP |
117 | %right <i_tkval> '!' '~' UMINUS REFGEN |
118 | %right <i_tkval> POWOP |
119 | %nonassoc <i_tkval> PREINC PREDEC POSTINC POSTDEC |
120 | %left <i_tkval> ARROW |
121 | %nonassoc <i_tkval> ')' |
122 | %left <i_tkval> '(' |
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123 | %left '[' '{' |
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124 | |
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125 | %token <i_tkval> PEG |
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126 | |
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127 | %% /* RULES */ |
128 | |
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129 | /* The whole program */ |
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130 | prog : progstart |
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131 | /*CONTINUED*/ lineseq |
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132 | { $$ = $1; newPROG(block_end($1,$2)); } |
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133 | ; |
134 | |
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135 | /* An ordinary block */ |
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136 | block : '{' remember lineseq '}' |
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137 | { if (PL_copline > (line_t)IVAL($1)) |
138 | PL_copline = (line_t)IVAL($1); |
139 | $$ = block_end($2, $3); |
140 | TOKEN_GETMAD($1,$$,'{'); |
141 | TOKEN_GETMAD($4,$$,'}'); |
142 | } |
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143 | ; |
144 | |
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145 | remember: /* NULL */ /* start a full lexical scope */ |
146 | { $$ = block_start(TRUE); } |
147 | ; |
148 | |
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149 | mydefsv: /* NULL */ /* lexicalize $_ */ |
150 | { $$ = (I32) allocmy("$_"); } |
151 | ; |
152 | |
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153 | progstart: |
154 | { |
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155 | PL_expect = XSTATE; $$ = block_start(TRUE); |
156 | } |
157 | ; |
158 | |
159 | |
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160 | mblock : '{' mremember lineseq '}' |
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161 | { if (PL_copline > (line_t)IVAL($1)) |
162 | PL_copline = (line_t)IVAL($1); |
163 | $$ = block_end($2, $3); |
164 | TOKEN_GETMAD($1,$$,'{'); |
165 | TOKEN_GETMAD($4,$$,'}'); |
166 | } |
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167 | ; |
168 | |
169 | mremember: /* NULL */ /* start a partial lexical scope */ |
170 | { $$ = block_start(FALSE); } |
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171 | ; |
172 | |
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173 | savescope: /* NULL */ /* remember stack pos in case of error */ |
174 | { $$ = PL_savestack_ix; } |
175 | |
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176 | /* A collection of "lines" in the program */ |
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177 | lineseq : /* NULL */ |
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178 | { $$ = Nullop; } |
179 | | lineseq decl |
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180 | { |
181 | $$ = IF_MAD( |
182 | append_list(OP_LINESEQ, |
183 | (LISTOP*)$1, (LISTOP*)$2), |
184 | $1); |
185 | } |
500bedb6 |
186 | | lineseq savescope line |
187 | { LEAVE_SCOPE($2); |
188 | $$ = append_list(OP_LINESEQ, |
189 | (LISTOP*)$1, (LISTOP*)$3); |
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190 | PL_pad_reset_pending = TRUE; |
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191 | if ($1 && $3) PL_hints |= HINT_BLOCK_SCOPE; } |
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192 | ; |
193 | |
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194 | /* A "line" in the program */ |
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195 | line : label cond |
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196 | { $$ = newSTATEOP(0, PVAL($1), $2); |
197 | TOKEN_GETMAD($1,((LISTOP*)$$)->op_first,'L'); } |
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198 | | loop /* loops add their own labels */ |
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199 | | switch /* ... and so do switches */ |
200 | { $$ = $1; } |
201 | | label case |
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202 | { $$ = newSTATEOP(0, PVAL($1), $2); } |
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203 | | label ';' |
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204 | { |
205 | if (PVAL($1)) { |
206 | $$ = newSTATEOP(0, PVAL($1), newOP(OP_NULL, 0)); |
207 | TOKEN_GETMAD($1,$$,'L'); |
208 | TOKEN_GETMAD($2,((LISTOP*)$$)->op_first,';'); |
209 | } |
210 | else { |
211 | $$ = IF_MAD( |
212 | newOP(OP_NULL, 0), |
213 | Nullop); |
214 | PL_copline = NOLINE; |
215 | TOKEN_FREE($1); |
216 | TOKEN_GETMAD($2,$$,';'); |
217 | } |
218 | PL_expect = XSTATE; |
219 | } |
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220 | | label sideff ';' |
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221 | { |
222 | $$ = newSTATEOP(0, PVAL($1), $2); |
223 | PL_expect = XSTATE; |
224 | DO_MAD( |
225 | /* sideff might already have a nexstate */ |
226 | OP* op = ((LISTOP*)$$)->op_first; |
227 | if (op) { |
228 | while (op->op_sibling && |
229 | op->op_sibling->op_type == OP_NEXTSTATE) |
230 | op = op->op_sibling; |
231 | token_getmad($1,op,'L'); |
232 | token_getmad($3,op,';'); |
233 | } |
234 | ) |
235 | } |
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236 | ; |
237 | |
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238 | /* An expression which may have a side-effect */ |
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239 | sideff : error |
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240 | { $$ = Nullop; } |
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241 | | expr |
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242 | { $$ = $1; } |
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243 | | expr IF expr |
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244 | { $$ = newLOGOP(OP_AND, 0, $3, $1); |
245 | TOKEN_GETMAD($2,$$,'i'); |
246 | } |
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247 | | expr UNLESS expr |
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248 | { $$ = newLOGOP(OP_OR, 0, $3, $1); |
249 | TOKEN_GETMAD($2,$$,'i'); |
250 | } |
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251 | | expr WHILE expr |
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252 | { $$ = newLOOPOP(OPf_PARENS, 1, scalar($3), $1); |
253 | TOKEN_GETMAD($2,$$,'w'); |
254 | } |
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255 | | expr UNTIL iexpr |
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256 | { $$ = newLOOPOP(OPf_PARENS, 1, $3, $1); |
257 | TOKEN_GETMAD($2,$$,'w'); |
258 | } |
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259 | | expr FOR expr |
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260 | { $$ = newFOROP(0, Nullch, (line_t)IVAL($2), |
261 | Nullop, $3, $1, Nullop); |
262 | TOKEN_GETMAD($2,((LISTOP*)$$)->op_first->op_sibling,'w'); |
263 | } |
79072805 |
264 | ; |
265 | |
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266 | /* else and elsif blocks */ |
79072805 |
267 | else : /* NULL */ |
268 | { $$ = Nullop; } |
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269 | | ELSE mblock |
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270 | { ($2)->op_flags |= OPf_PARENS; $$ = scope($2); |
271 | TOKEN_GETMAD($1,$$,'o'); |
272 | } |
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273 | | ELSIF '(' mexpr ')' mblock else |
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274 | { PL_copline = (line_t)IVAL($1); |
2c15bef3 |
275 | $$ = newCONDOP(0, $3, scope($5), $6); |
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276 | PL_hints |= HINT_BLOCK_SCOPE; |
277 | TOKEN_GETMAD($1,$$,'I'); |
278 | TOKEN_GETMAD($2,$$,'('); |
279 | TOKEN_GETMAD($4,$$,')'); |
280 | } |
79072805 |
281 | ; |
282 | |
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283 | /* Real conditional expressions */ |
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284 | cond : IF '(' remember mexpr ')' mblock else |
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285 | { PL_copline = (line_t)IVAL($1); |
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286 | $$ = block_end($3, |
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287 | newCONDOP(0, $4, scope($6), $7)); |
288 | TOKEN_GETMAD($1,$$,'I'); |
289 | TOKEN_GETMAD($2,$$,'('); |
290 | TOKEN_GETMAD($5,$$,')'); |
291 | } |
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292 | | UNLESS '(' remember miexpr ')' mblock else |
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293 | { PL_copline = (line_t)IVAL($1); |
36477c24 |
294 | $$ = block_end($3, |
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295 | newCONDOP(0, $4, scope($6), $7)); |
296 | TOKEN_GETMAD($1,$$,'I'); |
297 | TOKEN_GETMAD($2,$$,'('); |
298 | TOKEN_GETMAD($5,$$,')'); |
299 | } |
79072805 |
300 | ; |
301 | |
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302 | /* Cases for a switch statement */ |
303 | case : WHEN '(' remember mexpr ')' mblock |
304 | { $$ = block_end($3, |
305 | newWHENOP($4, scope($6))); } |
306 | | DEFAULT block |
307 | { $$ = newWHENOP(0, scope($2)); } |
308 | ; |
309 | |
891be019 |
310 | /* Continue blocks */ |
79072805 |
311 | cont : /* NULL */ |
312 | { $$ = Nullop; } |
313 | | CONTINUE block |
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314 | { $$ = scope($2); |
315 | TOKEN_GETMAD($1,$$,'o'); |
316 | } |
79072805 |
317 | ; |
318 | |
891be019 |
319 | /* Loops: while, until, for, and a bare block */ |
a034e688 |
320 | loop : label WHILE '(' remember texpr ')' mintro mblock cont |
f05e27e5 |
321 | { OP *innerop; |
322 | PL_copline = (line_t)$2; |
36477c24 |
323 | $$ = block_end($4, |
f05e27e5 |
324 | newSTATEOP(0, PVAL($1), |
325 | innerop = newWHILEOP(0, 1, (LOOP*)Nullop, |
326 | IVAL($2), $5, $8, $9, $7))); |
327 | TOKEN_GETMAD($1,innerop,'L'); |
328 | TOKEN_GETMAD($2,innerop,'W'); |
329 | TOKEN_GETMAD($3,innerop,'('); |
330 | TOKEN_GETMAD($6,innerop,')'); |
331 | } |
332 | |
a034e688 |
333 | | label UNTIL '(' remember iexpr ')' mintro mblock cont |
f05e27e5 |
334 | { OP *innerop; |
335 | PL_copline = (line_t)$2; |
36477c24 |
336 | $$ = block_end($4, |
f05e27e5 |
337 | newSTATEOP(0, PVAL($1), |
338 | innerop = newWHILEOP(0, 1, (LOOP*)Nullop, |
339 | IVAL($2), $5, $8, $9, $7))); |
340 | TOKEN_GETMAD($1,innerop,'L'); |
341 | TOKEN_GETMAD($2,innerop,'W'); |
342 | TOKEN_GETMAD($3,innerop,'('); |
343 | TOKEN_GETMAD($6,innerop,')'); |
344 | } |
bbce6d69 |
345 | | label FOR MY remember my_scalar '(' mexpr ')' mblock cont |
f05e27e5 |
346 | { OP *innerop; |
347 | $$ = block_end($4, |
348 | innerop = newFOROP(0, PVAL($1), (line_t)IVAL($2), |
349 | $5, $7, $9, $10)); |
350 | TOKEN_GETMAD($1,((LISTOP*)innerop)->op_first,'L'); |
351 | TOKEN_GETMAD($2,((LISTOP*)innerop)->op_first->op_sibling,'W'); |
352 | TOKEN_GETMAD($3,((LISTOP*)innerop)->op_first->op_sibling,'d'); |
353 | TOKEN_GETMAD($6,((LISTOP*)innerop)->op_first->op_sibling,'('); |
354 | TOKEN_GETMAD($8,((LISTOP*)innerop)->op_first->op_sibling,')'); |
355 | } |
bbce6d69 |
356 | | label FOR scalar '(' remember mexpr ')' mblock cont |
f05e27e5 |
357 | { OP *innerop; |
358 | $$ = block_end($5, |
359 | innerop = newFOROP(0, PVAL($1), (line_t)IVAL($2), |
360 | mod($3, OP_ENTERLOOP), $6, $8, $9)); |
361 | TOKEN_GETMAD($1,((LISTOP*)innerop)->op_first,'L'); |
362 | TOKEN_GETMAD($2,((LISTOP*)innerop)->op_first->op_sibling,'W'); |
363 | TOKEN_GETMAD($4,((LISTOP*)innerop)->op_first->op_sibling,'('); |
364 | TOKEN_GETMAD($7,((LISTOP*)innerop)->op_first->op_sibling,')'); |
365 | } |
bbce6d69 |
366 | | label FOR '(' remember mexpr ')' mblock cont |
f05e27e5 |
367 | { OP *innerop; |
368 | $$ = block_end($4, |
369 | innerop = newFOROP(0, PVAL($1), (line_t)IVAL($2), |
370 | Nullop, $5, $7, $8)); |
371 | TOKEN_GETMAD($1,((LISTOP*)innerop)->op_first,'L'); |
372 | TOKEN_GETMAD($2,((LISTOP*)innerop)->op_first->op_sibling,'W'); |
373 | TOKEN_GETMAD($3,((LISTOP*)innerop)->op_first->op_sibling,'('); |
374 | TOKEN_GETMAD($6,((LISTOP*)innerop)->op_first->op_sibling,')'); |
375 | } |
a034e688 |
376 | | label FOR '(' remember mnexpr ';' texpr ';' mintro mnexpr ')' |
377 | mblock |
8d063cd8 |
378 | /* basically fake up an initialize-while lineseq */ |
36c66720 |
379 | { OP *forop; |
f05e27e5 |
380 | PL_copline = (line_t)IVAL($2); |
381 | forop = newSTATEOP(0, PVAL($1), |
36c66720 |
382 | newWHILEOP(0, 1, (LOOP*)Nullop, |
f05e27e5 |
383 | IVAL($2), scalar($7), |
a034e688 |
384 | $12, $10, $9)); |
f05e27e5 |
385 | #ifdef MAD |
386 | if (!$5) |
387 | $5 = newOP(OP_NULL, 0); |
388 | forop = newUNOP(OP_NULL, 0, append_elem(OP_LINESEQ, |
389 | newSTATEOP(0, |
390 | (($1)->tk_lval.pval |
391 | ?savepv(($1)->tk_lval.pval):Nullch), |
392 | $5), |
393 | forop)); |
394 | |
395 | token_getmad($2,forop,'3'); |
396 | token_getmad($3,forop,'('); |
397 | token_getmad($6,forop,'1'); |
398 | token_getmad($8,forop,'2'); |
399 | token_getmad($11,forop,')'); |
400 | token_getmad($1,forop,'L'); |
401 | #else |
36c66720 |
402 | if ($5) { |
403 | forop = append_elem(OP_LINESEQ, |
404 | newSTATEOP(0, ($1?savepv($1):Nullch), |
405 | $5), |
406 | forop); |
407 | } |
408 | |
f05e27e5 |
409 | |
410 | #endif |
36c66720 |
411 | $$ = block_end($4, forop); } |
79072805 |
412 | | label block cont /* a block is a loop that happens once */ |
f05e27e5 |
413 | { $$ = newSTATEOP(0, PVAL($1), |
fb73857a |
414 | newWHILEOP(0, 1, (LOOP*)Nullop, |
f05e27e5 |
415 | NOLINE, Nullop, $2, $3, 0)); |
416 | TOKEN_GETMAD($1,((LISTOP*)$$)->op_first,'L'); } |
8d063cd8 |
417 | ; |
418 | |
0d863452 |
419 | /* Switch blocks */ |
420 | switch : label GIVEN '(' remember mydefsv mexpr ')' mblock |
421 | { PL_copline = (line_t) $2; |
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 */ |
79072805 |
436 | { $$ = Nullop; } |
8d063cd8 |
437 | | sideff |
438 | ; |
439 | |
891be019 |
440 | /* Boolean expression */ |
8d063cd8 |
441 | texpr : /* NULL means true */ |
f05e27e5 |
442 | { YYSTYPE tmplval; |
443 | (void)scan_num("1", &tmplval); |
444 | $$ = 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; |
471 | tmplval.pval = Nullch; |
472 | $$ = newTOKEN(OP_NULL, tmplval, 0); |
473 | #else |
474 | $$ = Nullch; |
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 | |
44a8e56a |
504 | format : FORMAT startformsub formname block |
a8ff2fa6 |
505 | { SvREFCNT_inc(PL_compcv); |
f05e27e5 |
506 | #ifdef MAD |
507 | $$ = newFORM($2, $3, $4); |
508 | prepend_madprops($1->tk_mad, $$, 'F'); |
509 | $1->tk_mad = 0; |
510 | token_free($1); |
511 | #else |
512 | newFORM($2, $3, $4); |
513 | #endif |
514 | } |
44a8e56a |
515 | ; |
516 | |
517 | formname: WORD { $$ = $1; } |
518 | | /* NULL */ { $$ = Nullop; } |
8d063cd8 |
519 | ; |
520 | |
891be019 |
521 | /* Unimplemented "my sub foo { }" */ |
09bef843 |
522 | mysubrout: MYSUB startsub subname proto subattrlist subbody |
a8ff2fa6 |
523 | { SvREFCNT_inc(PL_compcv); |
f05e27e5 |
524 | #ifdef MAD |
525 | $$ = newMYSUB($2, $3, $4, $5, $6); |
526 | token_getmad($1,$$,'d'); |
527 | #else |
528 | newMYSUB($2, $3, $4, $5, $6); |
529 | #endif |
530 | } |
09bef843 |
531 | ; |
532 | |
891be019 |
533 | /* Subroutine definition */ |
09bef843 |
534 | subrout : SUB startsub subname proto subattrlist subbody |
a8ff2fa6 |
535 | { SvREFCNT_inc(PL_compcv); |
f05e27e5 |
536 | #ifdef MAD |
537 | OP* o = newSVOP(OP_ANONCODE, 0, |
538 | (SV*)newATTRSUB($2, $3, $4, $5, $6)); |
539 | $$ = newOP(OP_NULL,0); |
540 | op_getmad(o,$$,'&'); |
541 | op_getmad($3,$$,'n'); |
542 | op_getmad($4,$$,'s'); |
543 | op_getmad($5,$$,'a'); |
544 | token_getmad($1,$$,'d'); |
545 | append_madprops($6->op_madprop, $$, 0); |
546 | $6->op_madprop = 0; |
547 | #else |
548 | newATTRSUB($2, $3, $4, $5, $6); |
549 | $$ = Nullop; |
550 | #endif |
551 | } |
28757baa |
552 | ; |
553 | |
fa83b5b6 |
554 | startsub: /* NULL */ /* start a regular subroutine scope */ |
a8ff2fa6 |
555 | { $$ = start_subparse(FALSE, 0); |
556 | SAVEFREESV(PL_compcv); } |
f05e27e5 |
557 | |
28757baa |
558 | ; |
559 | |
560 | startanonsub: /* NULL */ /* start an anonymous subroutine scope */ |
a8ff2fa6 |
561 | { $$ = start_subparse(FALSE, CVf_ANON); |
562 | SAVEFREESV(PL_compcv); } |
28757baa |
563 | ; |
564 | |
44a8e56a |
565 | startformsub: /* NULL */ /* start a format subroutine scope */ |
a8ff2fa6 |
566 | { $$ = start_subparse(TRUE, 0); |
567 | SAVEFREESV(PL_compcv); } |
44a8e56a |
568 | ; |
569 | |
891be019 |
570 | /* Name of a subroutine - must be a bareword, could be special */ |
2596d9fe |
571 | subname : WORD { const char *const name = SvPV_nolen_const(((SVOP*)$1)->op_sv); |
e858de61 |
572 | if (strEQ(name, "BEGIN") || strEQ(name, "END") |
3c10abe3 |
573 | || strEQ(name, "INIT") || strEQ(name, "CHECK") |
574 | || strEQ(name, "UNITCHECK")) |
1aff0e91 |
575 | CvSPECIAL_on(PL_compcv); |
28757baa |
576 | $$ = $1; } |
a0d0e21e |
577 | ; |
578 | |
891be019 |
579 | /* Subroutine prototype */ |
4633a7c4 |
580 | proto : /* NULL */ |
581 | { $$ = Nullop; } |
582 | | THING |
583 | ; |
28757baa |
584 | |
891be019 |
585 | /* Optional list of subroutine attributes */ |
09bef843 |
586 | subattrlist: /* NULL */ |
587 | { $$ = Nullop; } |
588 | | COLONATTR THING |
f05e27e5 |
589 | { $$ = $2; |
590 | TOKEN_GETMAD($1,$$,':'); |
591 | } |
09bef843 |
592 | | COLONATTR |
f05e27e5 |
593 | { $$ = IF_MAD( |
594 | newOP(OP_NULL, 0), |
595 | Nullop |
596 | ); |
597 | TOKEN_GETMAD($1,$$,':'); |
598 | } |
09bef843 |
599 | ; |
600 | |
891be019 |
601 | /* List of attributes for a "my" variable declaration */ |
09bef843 |
602 | myattrlist: COLONATTR THING |
f05e27e5 |
603 | { $$ = $2; |
604 | TOKEN_GETMAD($1,$$,':'); |
605 | } |
09bef843 |
606 | | COLONATTR |
f05e27e5 |
607 | { $$ = IF_MAD( |
608 | newOP(OP_NULL, 0), |
609 | Nullop |
610 | ); |
611 | TOKEN_GETMAD($1,$$,':'); |
612 | } |
09bef843 |
613 | ; |
614 | |
891be019 |
615 | /* Subroutine body - either null or a block */ |
28757baa |
616 | subbody : block { $$ = $1; } |
f05e27e5 |
617 | | ';' { $$ = IF_MAD( |
618 | newOP(OP_NULL,0), |
619 | Nullop |
620 | ); |
621 | PL_expect = XSTATE; |
622 | TOKEN_GETMAD($1,$$,';'); |
623 | } |
8d063cd8 |
624 | ; |
625 | |
a687059c |
626 | package : PACKAGE WORD ';' |
f05e27e5 |
627 | { |
628 | #ifdef MAD |
629 | $$ = package($2); |
630 | token_getmad($1,$$,'o'); |
631 | token_getmad($3,$$,';'); |
632 | #else |
633 | package($2); |
634 | #endif |
635 | } |
a687059c |
636 | ; |
637 | |
28757baa |
638 | use : USE startsub |
1aff0e91 |
639 | { CvSPECIAL_on(PL_compcv); /* It's a BEGIN {} */ } |
28757baa |
640 | WORD WORD listexpr ';' |
f05e27e5 |
641 | { SvREFCNT_inc(PL_compcv); |
642 | #ifdef MAD |
643 | $$ = utilize(IVAL($1), $2, $4, $5, $6); |
644 | token_getmad($1,$$,'o'); |
645 | token_getmad($7,$$,';'); |
646 | if (PL_rsfp_filters && AvFILLp(PL_rsfp_filters) >= 0) |
647 | append_madprops(newMADPROP('!', MAD_PV, "", 0), $$, 0); |
648 | #else |
649 | utilize(IVAL($1), $2, $4, $5, $6); |
650 | #endif |
651 | } |
85e6fe83 |
652 | ; |
653 | |
891be019 |
654 | /* Ordinary expressions; logical combinations */ |
a0d0e21e |
655 | expr : expr ANDOP expr |
f05e27e5 |
656 | { $$ = newLOGOP(OP_AND, 0, $1, $3); |
657 | TOKEN_GETMAD($2,$$,'o'); |
658 | } |
a0d0e21e |
659 | | expr OROP expr |
f05e27e5 |
660 | { $$ = newLOGOP(IVAL($2), 0, $1, $3); |
661 | TOKEN_GETMAD($2,$$,'o'); |
662 | } |
c963b151 |
663 | | expr DOROP expr |
f05e27e5 |
664 | { $$ = newLOGOP(OP_DOR, 0, $1, $3); |
665 | TOKEN_GETMAD($2,$$,'o'); |
666 | } |
fad39ff1 |
667 | | argexpr %prec PREC_LOW |
a0d0e21e |
668 | ; |
669 | |
891be019 |
670 | /* Expressions are a list of terms joined by commas */ |
a0d0e21e |
671 | argexpr : argexpr ',' |
f05e27e5 |
672 | { |
673 | #ifdef MAD |
674 | OP* op = newNULLLIST(); |
675 | token_getmad($2,op,','); |
676 | $$ = append_elem(OP_LIST, $1, op); |
677 | #else |
678 | $$ = $1; |
679 | #endif |
680 | } |
a0d0e21e |
681 | | argexpr ',' term |
f05e27e5 |
682 | { |
683 | DO_MAD( |
684 | $3 = newUNOP(OP_NULL, 0, $3); |
685 | token_getmad($2,$3,','); |
686 | ) |
687 | $$ = append_elem(OP_LIST, $1, $3); |
688 | } |
fad39ff1 |
689 | | term %prec PREC_LOW |
8d063cd8 |
690 | ; |
691 | |
891be019 |
692 | /* List operators */ |
ad4673e5 |
693 | listop : LSTOP indirob argexpr /* map {...} @args or print $fh @args */ |
f05e27e5 |
694 | { $$ = convert(IVAL($1), OPf_STACKED, |
695 | prepend_elem(OP_LIST, newGVREF(IVAL($1),$2), $3) ); |
696 | TOKEN_GETMAD($1,$$,'o'); |
697 | } |
891be019 |
698 | | FUNC '(' indirob expr ')' /* print ($fh @args */ |
f05e27e5 |
699 | { $$ = convert(IVAL($1), OPf_STACKED, |
700 | prepend_elem(OP_LIST, newGVREF(IVAL($1),$3), $4) ); |
701 | TOKEN_GETMAD($1,$$,'o'); |
702 | TOKEN_GETMAD($2,$$,'('); |
703 | TOKEN_GETMAD($5,$$,')'); |
704 | } |
891be019 |
705 | | term ARROW method '(' listexprcom ')' /* $foo->bar(list) */ |
4633a7c4 |
706 | { $$ = convert(OP_ENTERSUB, OPf_STACKED, |
a0d0e21e |
707 | append_elem(OP_LIST, |
55497cff |
708 | prepend_elem(OP_LIST, scalar($1), $5), |
f05e27e5 |
709 | newUNOP(OP_METHOD, 0, $3))); |
710 | TOKEN_GETMAD($2,$$,'A'); |
711 | TOKEN_GETMAD($4,$$,'('); |
712 | TOKEN_GETMAD($6,$$,')'); |
713 | } |
891be019 |
714 | | term ARROW method /* $foo->bar */ |
b1524f17 |
715 | { $$ = convert(OP_ENTERSUB, OPf_STACKED, |
716 | append_elem(OP_LIST, scalar($1), |
f05e27e5 |
717 | newUNOP(OP_METHOD, 0, $3))); |
718 | TOKEN_GETMAD($2,$$,'A'); |
719 | } |
891be019 |
720 | | METHOD indirob listexpr /* new Class @args */ |
4633a7c4 |
721 | { $$ = convert(OP_ENTERSUB, OPf_STACKED, |
a0d0e21e |
722 | append_elem(OP_LIST, |
4633a7c4 |
723 | prepend_elem(OP_LIST, $2, $3), |
f05e27e5 |
724 | newUNOP(OP_METHOD, 0, $1))); |
725 | } |
891be019 |
726 | | FUNCMETH indirob '(' listexprcom ')' /* method $object (@args) */ |
4633a7c4 |
727 | { $$ = convert(OP_ENTERSUB, OPf_STACKED, |
a0d0e21e |
728 | append_elem(OP_LIST, |
4633a7c4 |
729 | prepend_elem(OP_LIST, $2, $4), |
f05e27e5 |
730 | newUNOP(OP_METHOD, 0, $1))); |
731 | TOKEN_GETMAD($3,$$,'('); |
732 | TOKEN_GETMAD($5,$$,')'); |
733 | } |
891be019 |
734 | | LSTOP listexpr /* print @args */ |
f05e27e5 |
735 | { $$ = convert(IVAL($1), 0, $2); |
736 | TOKEN_GETMAD($1,$$,'o'); |
737 | } |
891be019 |
738 | | FUNC '(' listexprcom ')' /* print (@args) */ |
f05e27e5 |
739 | { $$ = convert(IVAL($1), 0, $3); |
740 | TOKEN_GETMAD($1,$$,'o'); |
741 | TOKEN_GETMAD($2,$$,'('); |
742 | TOKEN_GETMAD($4,$$,')'); |
743 | } |
ad4673e5 |
744 | | LSTOPSUB startanonsub block /* sub f(&@); f { foo } ... */ |
a8ff2fa6 |
745 | { SvREFCNT_inc(PL_compcv); |
746 | $3 = newANONATTRSUB($2, 0, Nullop, $3); } |
891be019 |
747 | listexpr %prec LSTOP /* ... @bar */ |
4633a7c4 |
748 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
28757baa |
749 | append_elem(OP_LIST, |
f05e27e5 |
750 | prepend_elem(OP_LIST, $3, $5), $1)); |
751 | } |
a687059c |
752 | ; |
753 | |
891be019 |
754 | /* Names of methods. May use $object->$methodname */ |
a0d0e21e |
755 | method : METHOD |
756 | | scalar |
757 | ; |
758 | |
891be019 |
759 | /* Some kind of subscripted expression */ |
760 | subscripted: star '{' expr ';' '}' /* *main::{something} */ |
761 | /* In this and all the hash accessors, ';' is |
762 | * provided by the tokeniser */ |
264e1af3 |
763 | { $$ = newBINOP(OP_GELEM, 0, $1, scalar($3)); |
f05e27e5 |
764 | PL_expect = XOPERATOR; |
765 | TOKEN_GETMAD($2,$$,'{'); |
766 | TOKEN_GETMAD($4,$$,';'); |
767 | TOKEN_GETMAD($5,$$,'}'); |
768 | } |
891be019 |
769 | | scalar '[' expr ']' /* $array[$element] */ |
f05e27e5 |
770 | { $$ = newBINOP(OP_AELEM, 0, oopsAV($1), scalar($3)); |
771 | TOKEN_GETMAD($2,$$,'['); |
772 | TOKEN_GETMAD($4,$$,']'); |
773 | } |
891be019 |
774 | | term ARROW '[' expr ']' /* somearef->[$element] */ |
fad39ff1 |
775 | { $$ = newBINOP(OP_AELEM, 0, |
776 | ref(newAVREF($1),OP_RV2AV), |
f05e27e5 |
777 | scalar($4)); |
778 | TOKEN_GETMAD($2,$$,'a'); |
779 | TOKEN_GETMAD($3,$$,'['); |
780 | TOKEN_GETMAD($5,$$,']'); |
781 | } |
891be019 |
782 | | subscripted '[' expr ']' /* $foo->[$bar]->[$baz] */ |
fad39ff1 |
783 | { $$ = newBINOP(OP_AELEM, 0, |
784 | ref(newAVREF($1),OP_RV2AV), |
f05e27e5 |
785 | scalar($3)); |
786 | TOKEN_GETMAD($2,$$,'['); |
787 | TOKEN_GETMAD($4,$$,']'); |
788 | } |
891be019 |
789 | | scalar '{' expr ';' '}' /* $foo->{bar();} */ |
fad39ff1 |
790 | { $$ = newBINOP(OP_HELEM, 0, oopsHV($1), jmaybe($3)); |
f05e27e5 |
791 | PL_expect = XOPERATOR; |
792 | TOKEN_GETMAD($2,$$,'{'); |
793 | TOKEN_GETMAD($4,$$,';'); |
794 | TOKEN_GETMAD($5,$$,'}'); |
795 | } |
891be019 |
796 | | term ARROW '{' expr ';' '}' /* somehref->{bar();} */ |
fad39ff1 |
797 | { $$ = newBINOP(OP_HELEM, 0, |
798 | ref(newHVREF($1),OP_RV2HV), |
799 | jmaybe($4)); |
f05e27e5 |
800 | PL_expect = XOPERATOR; |
801 | TOKEN_GETMAD($2,$$,'a'); |
802 | TOKEN_GETMAD($3,$$,'{'); |
803 | TOKEN_GETMAD($5,$$,';'); |
804 | TOKEN_GETMAD($6,$$,'}'); |
805 | } |
891be019 |
806 | | subscripted '{' expr ';' '}' /* $foo->[bar]->{baz;} */ |
fad39ff1 |
807 | { $$ = newBINOP(OP_HELEM, 0, |
808 | ref(newHVREF($1),OP_RV2HV), |
809 | jmaybe($3)); |
f05e27e5 |
810 | PL_expect = XOPERATOR; |
811 | TOKEN_GETMAD($2,$$,'{'); |
812 | TOKEN_GETMAD($4,$$,';'); |
813 | TOKEN_GETMAD($5,$$,'}'); |
814 | } |
891be019 |
815 | | term ARROW '(' ')' /* $subref->() */ |
fad39ff1 |
816 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
f05e27e5 |
817 | newCVREF(0, scalar($1))); |
818 | TOKEN_GETMAD($2,$$,'a'); |
819 | TOKEN_GETMAD($3,$$,'('); |
820 | TOKEN_GETMAD($4,$$,')'); |
821 | } |
891be019 |
822 | | term ARROW '(' expr ')' /* $subref->(@args) */ |
fad39ff1 |
823 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
824 | append_elem(OP_LIST, $4, |
f05e27e5 |
825 | newCVREF(0, scalar($1)))); |
826 | TOKEN_GETMAD($2,$$,'a'); |
827 | TOKEN_GETMAD($3,$$,'('); |
828 | TOKEN_GETMAD($5,$$,')'); |
829 | } |
fad39ff1 |
830 | |
891be019 |
831 | | subscripted '(' expr ')' /* $foo->{bar}->(@args) */ |
fad39ff1 |
832 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
833 | append_elem(OP_LIST, $3, |
f05e27e5 |
834 | newCVREF(0, scalar($1)))); |
835 | TOKEN_GETMAD($2,$$,'('); |
836 | TOKEN_GETMAD($4,$$,')'); |
837 | } |
891be019 |
838 | | subscripted '(' ')' /* $foo->{bar}->() */ |
fad39ff1 |
839 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
f05e27e5 |
840 | newCVREF(0, scalar($1))); |
841 | TOKEN_GETMAD($2,$$,'('); |
842 | TOKEN_GETMAD($3,$$,')'); |
843 | } |
9a9798c2 |
844 | | '(' expr ')' '[' expr ']' /* list slice */ |
f05e27e5 |
845 | { $$ = newSLICEOP(0, $5, $2); |
846 | TOKEN_GETMAD($1,$$,'('); |
847 | TOKEN_GETMAD($3,$$,')'); |
848 | TOKEN_GETMAD($4,$$,'['); |
849 | TOKEN_GETMAD($6,$$,']'); |
850 | } |
9a9798c2 |
851 | | '(' ')' '[' expr ']' /* empty list slice! */ |
f05e27e5 |
852 | { $$ = newSLICEOP(0, $4, Nullop); |
853 | TOKEN_GETMAD($1,$$,'('); |
854 | TOKEN_GETMAD($2,$$,')'); |
855 | TOKEN_GETMAD($3,$$,'['); |
856 | TOKEN_GETMAD($5,$$,']'); |
857 | } |
891be019 |
858 | ; |
fad39ff1 |
859 | |
891be019 |
860 | /* Binary operators between terms */ |
f05e27e5 |
861 | termbinop: term ASSIGNOP term /* $x = $y */ |
862 | { $$ = newASSIGNOP(OPf_STACKED, $1, IVAL($2), $3); |
863 | TOKEN_GETMAD($2,$$,'o'); |
864 | } |
891be019 |
865 | | term POWOP term /* $x ** $y */ |
f05e27e5 |
866 | { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3)); |
867 | TOKEN_GETMAD($2,$$,'o'); |
868 | } |
891be019 |
869 | | term MULOP term /* $x * $y, $x x $y */ |
f05e27e5 |
870 | { if (IVAL($2) != OP_REPEAT) |
79072805 |
871 | scalar($1); |
f05e27e5 |
872 | $$ = newBINOP(IVAL($2), 0, $1, scalar($3)); |
873 | TOKEN_GETMAD($2,$$,'o'); |
874 | } |
891be019 |
875 | | term ADDOP term /* $x + $y */ |
f05e27e5 |
876 | { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3)); |
877 | TOKEN_GETMAD($2,$$,'o'); |
878 | } |
891be019 |
879 | | term SHIFTOP term /* $x >> $y, $x << $y */ |
f05e27e5 |
880 | { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3)); |
881 | TOKEN_GETMAD($2,$$,'o'); |
882 | } |
891be019 |
883 | | term RELOP term /* $x > $y, etc. */ |
f05e27e5 |
884 | { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3)); |
885 | TOKEN_GETMAD($2,$$,'o'); |
886 | } |
891be019 |
887 | | term EQOP term /* $x == $y, $x eq $y */ |
f05e27e5 |
888 | { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3)); |
889 | TOKEN_GETMAD($2,$$,'o'); |
890 | } |
891be019 |
891 | | term BITANDOP term /* $x & $y */ |
f05e27e5 |
892 | { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3)); |
893 | TOKEN_GETMAD($2,$$,'o'); |
894 | } |
891be019 |
895 | | term BITOROP term /* $x | $y */ |
f05e27e5 |
896 | { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3)); |
897 | TOKEN_GETMAD($2,$$,'o'); |
898 | } |
891be019 |
899 | | term DOTDOT term /* $x..$y, $x...$y */ |
f05e27e5 |
900 | { |
901 | $$ = newRANGE(IVAL($2), scalar($1), scalar($3)); |
902 | DO_MAD( |
903 | UNOP *op; |
904 | op = (UNOP*)$$; |
905 | op = (UNOP*)op->op_first; /* get to flop */ |
906 | op = (UNOP*)op->op_first; /* get to flip */ |
907 | op = (UNOP*)op->op_first; /* get to range */ |
908 | token_getmad($2,(OP*)op,'o'); |
909 | ) |
910 | } |
891be019 |
911 | | term ANDAND term /* $x && $y */ |
f05e27e5 |
912 | { $$ = newLOGOP(OP_AND, 0, $1, $3); |
913 | TOKEN_GETMAD($2,$$,'o'); |
914 | } |
891be019 |
915 | | term OROR term /* $x || $y */ |
f05e27e5 |
916 | { $$ = newLOGOP(OP_OR, 0, $1, $3); |
917 | TOKEN_GETMAD($2,$$,'o'); |
918 | } |
c963b151 |
919 | | term DORDOR term /* $x // $y */ |
f05e27e5 |
920 | { $$ = newLOGOP(OP_DOR, 0, $1, $3); |
921 | TOKEN_GETMAD($2,$$,'o'); |
922 | } |
891be019 |
923 | | term MATCHOP term /* $x =~ /$y/ */ |
f05e27e5 |
924 | { $$ = bind_match(IVAL($2), $1, $3); |
925 | TOKEN_GETMAD($2, |
926 | ($$->op_type == OP_NOT |
927 | ? ((UNOP*)$$)->op_first : $$), |
928 | '~'); |
929 | } |
891be019 |
930 | ; |
8d063cd8 |
931 | |
891be019 |
932 | /* Unary operators and terms */ |
933 | termunop : '-' term %prec UMINUS /* -$x */ |
f05e27e5 |
934 | { $$ = newUNOP(OP_NEGATE, 0, scalar($2)); |
935 | TOKEN_GETMAD($1,$$,'o'); |
936 | } |
891be019 |
937 | | '+' term %prec UMINUS /* +$x */ |
f05e27e5 |
938 | { $$ = IF_MAD( |
939 | newUNOP(OP_NULL, 0, $2), |
940 | $2 |
941 | ); |
942 | TOKEN_GETMAD($1,$$,'+'); |
943 | } |
891be019 |
944 | | '!' term /* !$x */ |
f05e27e5 |
945 | { $$ = newUNOP(OP_NOT, 0, scalar($2)); |
946 | TOKEN_GETMAD($1,$$,'o'); |
947 | } |
891be019 |
948 | | '~' term /* ~$x */ |
f05e27e5 |
949 | { $$ = newUNOP(OP_COMPLEMENT, 0, scalar($2)); |
950 | TOKEN_GETMAD($1,$$,'o'); |
951 | } |
891be019 |
952 | | term POSTINC /* $x++ */ |
79072805 |
953 | { $$ = newUNOP(OP_POSTINC, 0, |
f05e27e5 |
954 | mod(scalar($1), OP_POSTINC)); |
955 | TOKEN_GETMAD($2,$$,'o'); |
956 | } |
891be019 |
957 | | term POSTDEC /* $x-- */ |
79072805 |
958 | { $$ = newUNOP(OP_POSTDEC, 0, |
f05e27e5 |
959 | mod(scalar($1), OP_POSTDEC)); |
960 | TOKEN_GETMAD($2,$$,'o'); |
961 | } |
891be019 |
962 | | PREINC term /* ++$x */ |
79072805 |
963 | { $$ = newUNOP(OP_PREINC, 0, |
f05e27e5 |
964 | mod(scalar($2), OP_PREINC)); |
965 | TOKEN_GETMAD($1,$$,'o'); |
966 | } |
891be019 |
967 | | PREDEC term /* --$x */ |
79072805 |
968 | { $$ = newUNOP(OP_PREDEC, 0, |
f05e27e5 |
969 | mod(scalar($2), OP_PREDEC)); |
970 | TOKEN_GETMAD($1,$$,'o'); |
971 | } |
891be019 |
972 | |
973 | ; |
974 | |
975 | /* Constructors for anonymous data */ |
976 | anonymous: '[' expr ']' |
f05e27e5 |
977 | { $$ = newANONLIST($2); |
978 | TOKEN_GETMAD($1,$$,'['); |
979 | TOKEN_GETMAD($3,$$,']'); |
980 | } |
891be019 |
981 | | '[' ']' |
f05e27e5 |
982 | { $$ = newANONLIST(Nullop); |
983 | TOKEN_GETMAD($1,$$,'['); |
984 | TOKEN_GETMAD($2,$$,']'); |
985 | } |
891be019 |
986 | | HASHBRACK expr ';' '}' %prec '(' /* { foo => "Bar" } */ |
f05e27e5 |
987 | { $$ = newANONHASH($2); |
988 | TOKEN_GETMAD($1,$$,'{'); |
989 | TOKEN_GETMAD($3,$$,';'); |
990 | TOKEN_GETMAD($4,$$,'}'); |
991 | } |
891be019 |
992 | | HASHBRACK ';' '}' %prec '(' /* { } (';' by tokener) */ |
f05e27e5 |
993 | { $$ = newANONHASH(Nullop); |
994 | TOKEN_GETMAD($1,$$,'{'); |
995 | TOKEN_GETMAD($2,$$,';'); |
996 | TOKEN_GETMAD($3,$$,'}'); |
997 | } |
891be019 |
998 | | ANONSUB startanonsub proto subattrlist block %prec '(' |
a8ff2fa6 |
999 | { SvREFCNT_inc(PL_compcv); |
f05e27e5 |
1000 | $$ = newANONATTRSUB($2, $3, $4, $5); |
1001 | TOKEN_GETMAD($1,$$,'o'); |
1002 | OP_GETMAD($3,$$,'s'); |
1003 | OP_GETMAD($4,$$,'a'); |
1004 | } |
891be019 |
1005 | |
1006 | ; |
1007 | |
1008 | /* Things called with "do" */ |
1009 | termdo : DO term %prec UNIOP /* do $filename */ |
123d08c9 |
1010 | { $$ = dofile($2, IVAL($1)); |
f05e27e5 |
1011 | TOKEN_GETMAD($1,$$,'o'); |
1012 | } |
891be019 |
1013 | | DO block %prec '(' /* do { code */ |
f05e27e5 |
1014 | { $$ = newUNOP(OP_NULL, OPf_SPECIAL, scope($2)); |
1015 | TOKEN_GETMAD($1,$$,'D'); |
1016 | } |
891be019 |
1017 | | DO WORD '(' ')' /* do somesub() */ |
1018 | { $$ = newUNOP(OP_ENTERSUB, |
1019 | OPf_SPECIAL|OPf_STACKED, |
1020 | prepend_elem(OP_LIST, |
1021 | scalar(newCVREF( |
1022 | (OPpENTERSUB_AMPER<<8), |
1023 | scalar($2) |
f05e27e5 |
1024 | )),Nullop)); dep(); |
1025 | TOKEN_GETMAD($1,$$,'o'); |
1026 | TOKEN_GETMAD($3,$$,'('); |
1027 | TOKEN_GETMAD($4,$$,')'); |
1028 | } |
891be019 |
1029 | | DO WORD '(' expr ')' /* do somesub(@args) */ |
1030 | { $$ = newUNOP(OP_ENTERSUB, |
1031 | OPf_SPECIAL|OPf_STACKED, |
1032 | append_elem(OP_LIST, |
1033 | $4, |
1034 | scalar(newCVREF( |
1035 | (OPpENTERSUB_AMPER<<8), |
1036 | scalar($2) |
f05e27e5 |
1037 | )))); dep(); |
1038 | TOKEN_GETMAD($1,$$,'o'); |
1039 | TOKEN_GETMAD($3,$$,'('); |
1040 | TOKEN_GETMAD($5,$$,')'); |
1041 | } |
891be019 |
1042 | | DO scalar '(' ')' /* do $subref () */ |
1043 | { $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED, |
1044 | prepend_elem(OP_LIST, |
f05e27e5 |
1045 | scalar(newCVREF(0,scalar($2))), Nullop)); dep(); |
1046 | TOKEN_GETMAD($1,$$,'o'); |
1047 | TOKEN_GETMAD($3,$$,'('); |
1048 | TOKEN_GETMAD($4,$$,')'); |
1049 | } |
891be019 |
1050 | | DO scalar '(' expr ')' /* do $subref (@args) */ |
1051 | { $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED, |
1052 | prepend_elem(OP_LIST, |
1053 | $4, |
f05e27e5 |
1054 | scalar(newCVREF(0,scalar($2))))); dep(); |
1055 | TOKEN_GETMAD($1,$$,'o'); |
1056 | TOKEN_GETMAD($3,$$,'('); |
1057 | TOKEN_GETMAD($5,$$,')'); |
1058 | } |
891be019 |
1059 | |
1060 | ; |
1061 | |
1062 | term : termbinop |
1063 | | termunop |
1064 | | anonymous |
1065 | | termdo |
e9bdcc27 |
1066 | | term '?' term ':' term |
f05e27e5 |
1067 | { $$ = newCONDOP(0, $1, $3, $5); |
1068 | TOKEN_GETMAD($2,$$,'?'); |
1069 | TOKEN_GETMAD($4,$$,':'); |
1070 | } |
891be019 |
1071 | | REFGEN term /* \$x, \@y, \%z */ |
f05e27e5 |
1072 | { $$ = newUNOP(OP_REFGEN, 0, mod($2,OP_REFGEN)); |
1073 | TOKEN_GETMAD($1,$$,'o'); |
1074 | } |
09bef843 |
1075 | | myattrterm %prec UNIOP |
1076 | { $$ = $1; } |
1077 | | LOCAL term %prec UNIOP |
f05e27e5 |
1078 | { $$ = localize($2,IVAL($1)); |
1079 | TOKEN_GETMAD($1,$$,'d'); |
1080 | } |
a0d0e21e |
1081 | | '(' expr ')' |
f05e27e5 |
1082 | { $$ = sawparens(IF_MAD(newUNOP(OP_NULL,0,$2), $2)); |
1083 | TOKEN_GETMAD($1,$$,'('); |
1084 | TOKEN_GETMAD($3,$$,')'); |
1085 | } |
8d063cd8 |
1086 | | '(' ')' |
f05e27e5 |
1087 | { $$ = sawparens(newNULLLIST()); |
1088 | TOKEN_GETMAD($1,$$,'('); |
1089 | TOKEN_GETMAD($2,$$,')'); |
1090 | } |
79072805 |
1091 | | scalar %prec '(' |
8d063cd8 |
1092 | { $$ = $1; } |
79072805 |
1093 | | star %prec '(' |
8d063cd8 |
1094 | { $$ = $1; } |
79072805 |
1095 | | hsh %prec '(' |
8d063cd8 |
1096 | { $$ = $1; } |
79072805 |
1097 | | ary %prec '(' |
8d063cd8 |
1098 | { $$ = $1; } |
891be019 |
1099 | | arylen %prec '(' /* $#x, $#{ something } */ |
79072805 |
1100 | { $$ = newUNOP(OP_AV2ARYLEN, 0, ref($1, OP_AV2ARYLEN));} |
fad39ff1 |
1101 | | subscripted |
1102 | { $$ = $1; } |
891be019 |
1103 | | ary '[' expr ']' /* array slice */ |
79072805 |
1104 | { $$ = prepend_elem(OP_ASLICE, |
1105 | newOP(OP_PUSHMARK, 0), |
79072805 |
1106 | newLISTOP(OP_ASLICE, 0, |
1107 | list($3), |
f05e27e5 |
1108 | ref($1, OP_ASLICE))); |
1109 | TOKEN_GETMAD($2,$$,'['); |
1110 | TOKEN_GETMAD($4,$$,']'); |
1111 | } |
891be019 |
1112 | | ary '{' expr ';' '}' /* @hash{@keys} */ |
79072805 |
1113 | { $$ = prepend_elem(OP_HSLICE, |
1114 | newOP(OP_PUSHMARK, 0), |
79072805 |
1115 | newLISTOP(OP_HSLICE, 0, |
1116 | list($3), |
a0d0e21e |
1117 | ref(oopsHV($1), OP_HSLICE))); |
f05e27e5 |
1118 | PL_expect = XOPERATOR; |
1119 | TOKEN_GETMAD($2,$$,'{'); |
1120 | TOKEN_GETMAD($4,$$,';'); |
1121 | TOKEN_GETMAD($5,$$,'}'); |
1122 | } |
79072805 |
1123 | | THING %prec '(' |
1124 | { $$ = $1; } |
891be019 |
1125 | | amper /* &foo; */ |
c07a80fd |
1126 | { $$ = newUNOP(OP_ENTERSUB, 0, scalar($1)); } |
ecb2f335 |
1127 | | amper '(' ')' /* &foo() */ |
f05e27e5 |
1128 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, scalar($1)); |
1129 | TOKEN_GETMAD($2,$$,'('); |
1130 | TOKEN_GETMAD($3,$$,')'); |
1131 | } |
891be019 |
1132 | | amper '(' expr ')' /* &foo(@args) */ |
f05e27e5 |
1133 | { |
1134 | $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
1135 | append_elem(OP_LIST, $3, scalar($1))); |
1136 | DO_MAD( |
1137 | OP* op = $$; |
1138 | if (op->op_type == OP_CONST) { /* defeat const fold */ |
1139 | op = (OP*)op->op_madprop->mad_val; |
1140 | } |
1141 | token_getmad($2,op,'('); |
1142 | token_getmad($4,op,')'); |
1143 | ) |
1144 | } |
891be019 |
1145 | | NOAMP WORD listexpr /* foo(@args) */ |
a0d0e21e |
1146 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
f05e27e5 |
1147 | append_elem(OP_LIST, $3, scalar($2))); |
1148 | TOKEN_GETMAD($1,$$,'o'); |
1149 | } |
891be019 |
1150 | | LOOPEX /* loop exiting command (goto, last, dump, etc) */ |
f05e27e5 |
1151 | { $$ = newOP(IVAL($1), OPf_SPECIAL); |
1152 | PL_hints |= HINT_BLOCK_SCOPE; |
1153 | TOKEN_GETMAD($1,$$,'o'); |
1154 | } |
a0d0e21e |
1155 | | LOOPEX term |
f05e27e5 |
1156 | { $$ = newLOOPEX(IVAL($1),$2); |
1157 | TOKEN_GETMAD($1,$$,'o'); |
1158 | } |
891be019 |
1159 | | NOTOP argexpr /* not $foo */ |
f05e27e5 |
1160 | { $$ = newUNOP(OP_NOT, 0, scalar($2)); |
1161 | TOKEN_GETMAD($1,$$,'o'); |
1162 | } |
891be019 |
1163 | | UNIOP /* Unary op, $_ implied */ |
f05e27e5 |
1164 | { $$ = newOP(IVAL($1), 0); |
1165 | TOKEN_GETMAD($1,$$,'o'); |
1166 | } |
1167 | | UNIOP block /* eval { foo }* */ |
1168 | { $$ = newUNOP(IVAL($1), 0, $2); |
1169 | TOKEN_GETMAD($1,$$,'o'); |
1170 | } |
891be019 |
1171 | | UNIOP term /* Unary op */ |
f05e27e5 |
1172 | { $$ = newUNOP(IVAL($1), 0, $2); |
1173 | TOKEN_GETMAD($1,$$,'o'); |
1174 | } |
1175 | | REQUIRE /* require, $_ implied *//* FIMXE for MAD needed? */ |
a72a1c8b |
1176 | { $$ = newOP(OP_REQUIRE, $1 ? OPf_SPECIAL : 0); } |
f05e27e5 |
1177 | | REQUIRE term /* require Foo *//* FIMXE for MAD needed? */ |
a72a1c8b |
1178 | { $$ = newUNOP(OP_REQUIRE, $1 ? OPf_SPECIAL : 0, $2); } |
3cd0a11a |
1179 | | UNIOPSUB |
1180 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, scalar($1)); } |
891be019 |
1181 | | UNIOPSUB term /* Sub treated as unop */ |
4633a7c4 |
1182 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
1183 | append_elem(OP_LIST, $2, scalar($1))); } |
891be019 |
1184 | | FUNC0 /* Nullary operator */ |
f05e27e5 |
1185 | { $$ = newOP(IVAL($1), 0); |
1186 | TOKEN_GETMAD($1,$$,'o'); |
1187 | } |
ae986130 |
1188 | | FUNC0 '(' ')' |
f05e27e5 |
1189 | { $$ = newOP(IVAL($1), 0); |
1190 | TOKEN_GETMAD($1,$$,'o'); |
1191 | TOKEN_GETMAD($2,$$,'('); |
1192 | TOKEN_GETMAD($3,$$,')'); |
1193 | } |
891be019 |
1194 | | FUNC0SUB /* Sub treated as nullop */ |
28757baa |
1195 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
4633a7c4 |
1196 | scalar($1)); } |
891be019 |
1197 | | FUNC1 '(' ')' /* not () */ |
f05e27e5 |
1198 | { $$ = (IVAL($1) == OP_NOT) |
1199 | ? newUNOP(IVAL($1), 0, newSVOP(OP_CONST, 0, newSViv(0))) |
1200 | : newOP(IVAL($1), OPf_SPECIAL); |
1201 | |
1202 | TOKEN_GETMAD($1,$$,'o'); |
1203 | TOKEN_GETMAD($2,$$,'('); |
1204 | TOKEN_GETMAD($3,$$,')'); |
1205 | } |
891be019 |
1206 | | FUNC1 '(' expr ')' /* not($foo) */ |
f05e27e5 |
1207 | { $$ = newUNOP(IVAL($1), 0, $3); |
1208 | TOKEN_GETMAD($1,$$,'o'); |
1209 | TOKEN_GETMAD($2,$$,'('); |
1210 | TOKEN_GETMAD($4,$$,')'); |
1211 | } |
1212 | | PMFUNC '(' argexpr ')' /* m//, s///, tr/// */ |
1213 | { $$ = pmruntime($1, $3, 1); |
1214 | TOKEN_GETMAD($2,$$,'('); |
1215 | TOKEN_GETMAD($4,$$,')'); |
1216 | } |
79072805 |
1217 | | WORD |
378cc40b |
1218 | | listop |
8d063cd8 |
1219 | ; |
1220 | |
891be019 |
1221 | /* "my" declarations, with optional attributes */ |
09bef843 |
1222 | myattrterm: MY myterm myattrlist |
f05e27e5 |
1223 | { $$ = my_attrs($2,$3); |
1224 | DO_MAD( |
1225 | token_getmad($1,$$,'d'); |
1226 | append_madprops($3->op_madprop, $$, 'a'); |
1227 | $3->op_madprop = 0; |
1228 | ) |
1229 | } |
09bef843 |
1230 | | MY myterm |
f05e27e5 |
1231 | { $$ = localize($2,IVAL($1)); |
1232 | TOKEN_GETMAD($1,$$,'d'); |
1233 | } |
09bef843 |
1234 | ; |
1235 | |
891be019 |
1236 | /* Things that can be "my"'d */ |
09bef843 |
1237 | myterm : '(' expr ')' |
f05e27e5 |
1238 | { $$ = sawparens($2); |
1239 | TOKEN_GETMAD($1,$$,'('); |
1240 | TOKEN_GETMAD($3,$$,')'); |
1241 | } |
09bef843 |
1242 | | '(' ')' |
f05e27e5 |
1243 | { $$ = sawparens(newNULLLIST()); |
1244 | TOKEN_GETMAD($1,$$,'('); |
1245 | TOKEN_GETMAD($2,$$,')'); |
1246 | } |
09bef843 |
1247 | | scalar %prec '(' |
1248 | { $$ = $1; } |
1249 | | hsh %prec '(' |
1250 | { $$ = $1; } |
1251 | | ary %prec '(' |
1252 | { $$ = $1; } |
1253 | ; |
1254 | |
891be019 |
1255 | /* Basic list expressions */ |
fad39ff1 |
1256 | listexpr: /* NULL */ %prec PREC_LOW |
8990e307 |
1257 | { $$ = Nullop; } |
fad39ff1 |
1258 | | argexpr %prec PREC_LOW |
a0d0e21e |
1259 | { $$ = $1; } |
1260 | ; |
1261 | |
1262 | listexprcom: /* NULL */ |
1263 | { $$ = Nullop; } |
79072805 |
1264 | | expr |
1265 | { $$ = $1; } |
a0d0e21e |
1266 | | expr ',' |
f05e27e5 |
1267 | { |
1268 | #ifdef MAD |
1269 | OP* op = newNULLLIST(); |
1270 | token_getmad($2,op,','); |
1271 | $$ = append_elem(OP_LIST, $1, op); |
1272 | #else |
1273 | $$ = $1; |
1274 | #endif |
1275 | |
1276 | } |
79072805 |
1277 | ; |
1278 | |
891be019 |
1279 | /* A little bit of trickery to make "for my $foo (@bar)" actually be |
1280 | lexical */ |
55497cff |
1281 | my_scalar: scalar |
3280af22 |
1282 | { PL_in_my = 0; $$ = my($1); } |
55497cff |
1283 | ; |
1284 | |
79072805 |
1285 | amper : '&' indirob |
f05e27e5 |
1286 | { $$ = newCVREF(IVAL($1),$2); |
1287 | TOKEN_GETMAD($1,$$,'&'); |
1288 | } |
a687059c |
1289 | ; |
1290 | |
79072805 |
1291 | scalar : '$' indirob |
f05e27e5 |
1292 | { $$ = newSVREF($2); |
1293 | TOKEN_GETMAD($1,$$,'$'); |
1294 | } |
a687059c |
1295 | ; |
1296 | |
79072805 |
1297 | ary : '@' indirob |
f05e27e5 |
1298 | { $$ = newAVREF($2); |
1299 | TOKEN_GETMAD($1,$$,'@'); |
1300 | } |
79072805 |
1301 | ; |
1302 | |
1303 | hsh : '%' indirob |
f05e27e5 |
1304 | { $$ = newHVREF($2); |
1305 | TOKEN_GETMAD($1,$$,'%'); |
1306 | } |
79072805 |
1307 | ; |
1308 | |
1309 | arylen : DOLSHARP indirob |
f05e27e5 |
1310 | { $$ = newAVREF($2); |
1311 | TOKEN_GETMAD($1,$$,'l'); |
1312 | } |
79072805 |
1313 | ; |
1314 | |
1315 | star : '*' indirob |
f05e27e5 |
1316 | { $$ = newGVREF(0,$2); |
1317 | TOKEN_GETMAD($1,$$,'*'); |
1318 | } |
79072805 |
1319 | ; |
1320 | |
891be019 |
1321 | /* Indirect objects */ |
79072805 |
1322 | indirob : WORD |
1323 | { $$ = scalar($1); } |
fad39ff1 |
1324 | | scalar %prec PREC_LOW |
f05e27e5 |
1325 | { $$ = scalar($1); } |
79072805 |
1326 | | block |
a0d0e21e |
1327 | { $$ = scope($1); } |
79072805 |
1328 | |
93a17b20 |
1329 | | PRIVATEREF |
1330 | { $$ = $1; } |
8d063cd8 |
1331 | ; |