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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 | * Note: due to the way that the cleanup code works WRT to freeing ops on |
37 | * the parse stack, it is dangerous to assign to the $n variables within |
38 | * an action. |
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39 | */ |
40 | |
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41 | /* Make the parser re-entrant. */ |
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42 | |
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43 | %pure_parser |
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44 | |
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45 | /* FIXME for MAD - is the new mintro on while and until important? */ |
46 | |
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47 | %start prog |
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48 | |
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49 | %union { |
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50 | I32 ival; /* __DEFAULT__ (marker for regen_perly.pl; |
51 | must always be 1st union member) */ |
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52 | char *pval; |
53 | OP *opval; |
54 | GV *gvval; |
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55 | #ifdef PERL_IN_MADLY_C |
56 | TOKEN* p_tkval; |
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57 | TOKEN* i_tkval; |
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58 | #else |
59 | char *p_tkval; |
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60 | I32 i_tkval; |
61 | #endif |
62 | #ifdef PERL_MAD |
63 | TOKEN* tkval; |
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64 | #endif |
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65 | } |
66 | |
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67 | %token <i_tkval> '{' '}' '[' ']' '-' '+' '$' '@' '%' '*' '&' ';' |
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68 | |
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69 | %token <opval> WORD METHOD FUNCMETH THING PMFUNC PRIVATEREF |
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70 | %token <opval> FUNC0SUB UNIOPSUB LSTOPSUB |
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71 | %token <p_tkval> LABEL |
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72 | %token <i_tkval> FORMAT SUB ANONSUB PACKAGE USE |
73 | %token <i_tkval> WHILE UNTIL IF UNLESS ELSE ELSIF CONTINUE FOR |
74 | %token <i_tkval> GIVEN WHEN DEFAULT |
75 | %token <i_tkval> LOOPEX DOTDOT |
76 | %token <i_tkval> FUNC0 FUNC1 FUNC UNIOP LSTOP |
77 | %token <i_tkval> RELOP EQOP MULOP ADDOP |
78 | %token <i_tkval> DOLSHARP DO HASHBRACK NOAMP |
79 | %token <i_tkval> LOCAL MY MYSUB REQUIRE |
80 | %token <i_tkval> COLONATTR |
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81 | |
82 | %type <ival> prog progstart remember mremember savescope |
83 | %type <ival> startsub startanonsub startformsub |
84 | /* FIXME for MAD - are these two ival? */ |
85 | %type <ival> mydefsv mintro |
86 | |
87 | %type <opval> decl format subrout mysubrout package use peg |
88 | |
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89 | %type <opval> block mblock lineseq line loop cond else |
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90 | %type <opval> expr term subscripted scalar ary hsh arylen star amper sideff |
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91 | %type <opval> argexpr nexpr texpr iexpr mexpr mnexpr miexpr |
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92 | %type <opval> listexpr listexprcom indirob listop method |
93 | %type <opval> formname subname proto subbody cont my_scalar |
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94 | %type <opval> subattrlist myattrlist myattrterm myterm |
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95 | %type <opval> termbinop termunop anonymous termdo |
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96 | %type <opval> switch case |
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97 | %type <p_tkval> label |
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98 | |
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99 | %nonassoc <i_tkval> PREC_LOW |
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100 | %nonassoc LOOPEX |
101 | |
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102 | %left <i_tkval> OROP DOROP |
103 | %left <i_tkval> ANDOP |
104 | %right <i_tkval> NOTOP |
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105 | %nonassoc LSTOP LSTOPSUB |
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106 | %left <i_tkval> ',' |
107 | %right <i_tkval> ASSIGNOP |
108 | %right <i_tkval> '?' ':' |
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109 | %nonassoc DOTDOT |
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110 | %left <i_tkval> OROR DORDOR |
111 | %left <i_tkval> ANDAND |
112 | %left <i_tkval> BITOROP |
113 | %left <i_tkval> BITANDOP |
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114 | %nonassoc EQOP |
115 | %nonassoc RELOP |
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116 | %nonassoc UNIOP UNIOPSUB |
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117 | %nonassoc REQUIRE |
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118 | %left <i_tkval> SHIFTOP |
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119 | %left ADDOP |
120 | %left MULOP |
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121 | %left <i_tkval> MATCHOP |
122 | %right <i_tkval> '!' '~' UMINUS REFGEN |
123 | %right <i_tkval> POWOP |
124 | %nonassoc <i_tkval> PREINC PREDEC POSTINC POSTDEC |
125 | %left <i_tkval> ARROW |
126 | %nonassoc <i_tkval> ')' |
127 | %left <i_tkval> '(' |
fad39ff1 |
128 | %left '[' '{' |
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129 | |
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130 | %token <i_tkval> PEG |
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131 | |
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132 | %% /* RULES */ |
133 | |
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134 | /* The whole program */ |
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135 | prog : progstart |
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136 | /*CONTINUED*/ lineseq |
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137 | { $$ = $1; newPROG(block_end($1,$2)); } |
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138 | ; |
139 | |
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140 | /* An ordinary block */ |
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141 | block : '{' remember lineseq '}' |
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142 | { if (PL_parser->copline > (line_t)IVAL($1)) |
143 | PL_parser->copline = (line_t)IVAL($1); |
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144 | $$ = block_end($2, $3); |
145 | TOKEN_GETMAD($1,$$,'{'); |
146 | TOKEN_GETMAD($4,$$,'}'); |
147 | } |
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148 | ; |
149 | |
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150 | remember: /* NULL */ /* start a full lexical scope */ |
151 | { $$ = block_start(TRUE); } |
152 | ; |
153 | |
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154 | mydefsv: /* NULL */ /* lexicalize $_ */ |
155 | { $$ = (I32) allocmy("$_"); } |
156 | ; |
157 | |
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158 | progstart: |
159 | { |
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160 | PL_parser->expect = XSTATE; $$ = block_start(TRUE); |
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161 | } |
162 | ; |
163 | |
164 | |
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165 | mblock : '{' mremember lineseq '}' |
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166 | { if (PL_parser->copline > (line_t)IVAL($1)) |
167 | PL_parser->copline = (line_t)IVAL($1); |
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168 | $$ = block_end($2, $3); |
169 | TOKEN_GETMAD($1,$$,'{'); |
170 | TOKEN_GETMAD($4,$$,'}'); |
171 | } |
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172 | ; |
173 | |
174 | mremember: /* NULL */ /* start a partial lexical scope */ |
175 | { $$ = block_start(FALSE); } |
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176 | ; |
177 | |
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178 | savescope: /* NULL */ /* remember stack pos in case of error */ |
179 | { $$ = PL_savestack_ix; } |
180 | |
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181 | /* A collection of "lines" in the program */ |
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182 | lineseq : /* NULL */ |
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183 | { $$ = Nullop; } |
184 | | lineseq decl |
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185 | { |
186 | $$ = IF_MAD( |
187 | append_list(OP_LINESEQ, |
188 | (LISTOP*)$1, (LISTOP*)$2), |
189 | $1); |
190 | } |
500bedb6 |
191 | | lineseq savescope line |
192 | { LEAVE_SCOPE($2); |
193 | $$ = append_list(OP_LINESEQ, |
194 | (LISTOP*)$1, (LISTOP*)$3); |
3280af22 |
195 | PL_pad_reset_pending = TRUE; |
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196 | if ($1 && $3) PL_hints |= HINT_BLOCK_SCOPE; } |
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197 | ; |
198 | |
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199 | /* A "line" in the program */ |
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200 | line : label cond |
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201 | { $$ = newSTATEOP(0, PVAL($1), $2); |
202 | TOKEN_GETMAD($1,((LISTOP*)$$)->op_first,'L'); } |
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203 | | loop /* loops add their own labels */ |
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204 | | switch /* ... and so do switches */ |
205 | { $$ = $1; } |
206 | | label case |
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207 | { $$ = newSTATEOP(0, PVAL($1), $2); } |
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208 | | label ';' |
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209 | { |
210 | if (PVAL($1)) { |
211 | $$ = newSTATEOP(0, PVAL($1), newOP(OP_NULL, 0)); |
212 | TOKEN_GETMAD($1,$$,'L'); |
213 | TOKEN_GETMAD($2,((LISTOP*)$$)->op_first,';'); |
214 | } |
215 | else { |
216 | $$ = IF_MAD( |
217 | newOP(OP_NULL, 0), |
218 | Nullop); |
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219 | PL_parser->copline = NOLINE; |
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220 | TOKEN_FREE($1); |
221 | TOKEN_GETMAD($2,$$,';'); |
222 | } |
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223 | PL_parser->expect = XSTATE; |
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224 | } |
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225 | | label sideff ';' |
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226 | { |
227 | $$ = newSTATEOP(0, PVAL($1), $2); |
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228 | PL_parser->expect = XSTATE; |
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229 | DO_MAD({ |
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230 | /* sideff might already have a nexstate */ |
231 | OP* op = ((LISTOP*)$$)->op_first; |
232 | if (op) { |
233 | while (op->op_sibling && |
234 | op->op_sibling->op_type == OP_NEXTSTATE) |
235 | op = op->op_sibling; |
236 | token_getmad($1,op,'L'); |
237 | token_getmad($3,op,';'); |
238 | } |
035e2bcc |
239 | }) |
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240 | } |
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241 | ; |
242 | |
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243 | /* An expression which may have a side-effect */ |
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244 | sideff : error |
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245 | { $$ = Nullop; } |
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246 | | expr |
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247 | { $$ = $1; } |
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248 | | expr IF expr |
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249 | { $$ = newLOGOP(OP_AND, 0, $3, $1); |
250 | TOKEN_GETMAD($2,$$,'i'); |
251 | } |
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252 | | expr UNLESS expr |
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253 | { $$ = newLOGOP(OP_OR, 0, $3, $1); |
254 | TOKEN_GETMAD($2,$$,'i'); |
255 | } |
a687059c |
256 | | expr WHILE expr |
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257 | { $$ = newLOOPOP(OPf_PARENS, 1, scalar($3), $1); |
258 | TOKEN_GETMAD($2,$$,'w'); |
259 | } |
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260 | | expr UNTIL iexpr |
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261 | { $$ = newLOOPOP(OPf_PARENS, 1, $3, $1); |
262 | TOKEN_GETMAD($2,$$,'w'); |
263 | } |
ecca16b0 |
264 | | expr FOR expr |
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265 | { $$ = newFOROP(0, Nullch, (line_t)IVAL($2), |
266 | Nullop, $3, $1, Nullop); |
267 | TOKEN_GETMAD($2,((LISTOP*)$$)->op_first->op_sibling,'w'); |
268 | } |
79072805 |
269 | ; |
270 | |
891be019 |
271 | /* else and elsif blocks */ |
79072805 |
272 | else : /* NULL */ |
273 | { $$ = Nullop; } |
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274 | | ELSE mblock |
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275 | { ($2)->op_flags |= OPf_PARENS; $$ = scope($2); |
276 | TOKEN_GETMAD($1,$$,'o'); |
277 | } |
55497cff |
278 | | ELSIF '(' mexpr ')' mblock else |
53a7735b |
279 | { PL_parser->copline = (line_t)IVAL($1); |
2c15bef3 |
280 | $$ = newCONDOP(0, $3, scope($5), $6); |
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281 | PL_hints |= HINT_BLOCK_SCOPE; |
282 | TOKEN_GETMAD($1,$$,'I'); |
283 | TOKEN_GETMAD($2,$$,'('); |
284 | TOKEN_GETMAD($4,$$,')'); |
285 | } |
79072805 |
286 | ; |
287 | |
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288 | /* Real conditional expressions */ |
55497cff |
289 | cond : IF '(' remember mexpr ')' mblock else |
53a7735b |
290 | { PL_parser->copline = (line_t)IVAL($1); |
36477c24 |
291 | $$ = block_end($3, |
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292 | newCONDOP(0, $4, scope($6), $7)); |
293 | TOKEN_GETMAD($1,$$,'I'); |
294 | TOKEN_GETMAD($2,$$,'('); |
295 | TOKEN_GETMAD($5,$$,')'); |
296 | } |
55497cff |
297 | | UNLESS '(' remember miexpr ')' mblock else |
53a7735b |
298 | { PL_parser->copline = (line_t)IVAL($1); |
36477c24 |
299 | $$ = block_end($3, |
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300 | newCONDOP(0, $4, scope($6), $7)); |
301 | TOKEN_GETMAD($1,$$,'I'); |
302 | TOKEN_GETMAD($2,$$,'('); |
303 | TOKEN_GETMAD($5,$$,')'); |
304 | } |
79072805 |
305 | ; |
306 | |
0d863452 |
307 | /* Cases for a switch statement */ |
308 | case : WHEN '(' remember mexpr ')' mblock |
309 | { $$ = block_end($3, |
310 | newWHENOP($4, scope($6))); } |
311 | | DEFAULT block |
312 | { $$ = newWHENOP(0, scope($2)); } |
313 | ; |
314 | |
891be019 |
315 | /* Continue blocks */ |
79072805 |
316 | cont : /* NULL */ |
317 | { $$ = Nullop; } |
318 | | CONTINUE block |
f05e27e5 |
319 | { $$ = scope($2); |
320 | TOKEN_GETMAD($1,$$,'o'); |
321 | } |
79072805 |
322 | ; |
323 | |
891be019 |
324 | /* Loops: while, until, for, and a bare block */ |
a034e688 |
325 | loop : label WHILE '(' remember texpr ')' mintro mblock cont |
f05e27e5 |
326 | { OP *innerop; |
53a7735b |
327 | PL_parser->copline = (line_t)$2; |
36477c24 |
328 | $$ = block_end($4, |
f05e27e5 |
329 | newSTATEOP(0, PVAL($1), |
330 | innerop = newWHILEOP(0, 1, (LOOP*)Nullop, |
331 | IVAL($2), $5, $8, $9, $7))); |
332 | TOKEN_GETMAD($1,innerop,'L'); |
333 | TOKEN_GETMAD($2,innerop,'W'); |
334 | TOKEN_GETMAD($3,innerop,'('); |
335 | TOKEN_GETMAD($6,innerop,')'); |
336 | } |
337 | |
a034e688 |
338 | | label UNTIL '(' remember iexpr ')' mintro mblock cont |
f05e27e5 |
339 | { OP *innerop; |
53a7735b |
340 | PL_parser->copline = (line_t)$2; |
36477c24 |
341 | $$ = block_end($4, |
f05e27e5 |
342 | newSTATEOP(0, PVAL($1), |
343 | innerop = newWHILEOP(0, 1, (LOOP*)Nullop, |
344 | IVAL($2), $5, $8, $9, $7))); |
345 | TOKEN_GETMAD($1,innerop,'L'); |
346 | TOKEN_GETMAD($2,innerop,'W'); |
347 | TOKEN_GETMAD($3,innerop,'('); |
348 | TOKEN_GETMAD($6,innerop,')'); |
349 | } |
bbce6d69 |
350 | | label FOR MY remember my_scalar '(' mexpr ')' mblock cont |
f05e27e5 |
351 | { OP *innerop; |
352 | $$ = block_end($4, |
353 | innerop = newFOROP(0, PVAL($1), (line_t)IVAL($2), |
354 | $5, $7, $9, $10)); |
355 | TOKEN_GETMAD($1,((LISTOP*)innerop)->op_first,'L'); |
356 | TOKEN_GETMAD($2,((LISTOP*)innerop)->op_first->op_sibling,'W'); |
357 | TOKEN_GETMAD($3,((LISTOP*)innerop)->op_first->op_sibling,'d'); |
358 | TOKEN_GETMAD($6,((LISTOP*)innerop)->op_first->op_sibling,'('); |
359 | TOKEN_GETMAD($8,((LISTOP*)innerop)->op_first->op_sibling,')'); |
360 | } |
bbce6d69 |
361 | | label FOR scalar '(' remember mexpr ')' mblock cont |
f05e27e5 |
362 | { OP *innerop; |
363 | $$ = block_end($5, |
364 | innerop = newFOROP(0, PVAL($1), (line_t)IVAL($2), |
365 | mod($3, OP_ENTERLOOP), $6, $8, $9)); |
366 | TOKEN_GETMAD($1,((LISTOP*)innerop)->op_first,'L'); |
367 | TOKEN_GETMAD($2,((LISTOP*)innerop)->op_first->op_sibling,'W'); |
368 | TOKEN_GETMAD($4,((LISTOP*)innerop)->op_first->op_sibling,'('); |
369 | TOKEN_GETMAD($7,((LISTOP*)innerop)->op_first->op_sibling,')'); |
370 | } |
bbce6d69 |
371 | | label FOR '(' remember mexpr ')' mblock cont |
f05e27e5 |
372 | { OP *innerop; |
373 | $$ = block_end($4, |
374 | innerop = newFOROP(0, PVAL($1), (line_t)IVAL($2), |
375 | Nullop, $5, $7, $8)); |
376 | TOKEN_GETMAD($1,((LISTOP*)innerop)->op_first,'L'); |
377 | TOKEN_GETMAD($2,((LISTOP*)innerop)->op_first->op_sibling,'W'); |
378 | TOKEN_GETMAD($3,((LISTOP*)innerop)->op_first->op_sibling,'('); |
379 | TOKEN_GETMAD($6,((LISTOP*)innerop)->op_first->op_sibling,')'); |
380 | } |
a034e688 |
381 | | label FOR '(' remember mnexpr ';' texpr ';' mintro mnexpr ')' |
382 | mblock |
8d063cd8 |
383 | /* basically fake up an initialize-while lineseq */ |
36c66720 |
384 | { OP *forop; |
53a7735b |
385 | PL_parser->copline = (line_t)IVAL($2); |
f05e27e5 |
386 | forop = newSTATEOP(0, PVAL($1), |
36c66720 |
387 | newWHILEOP(0, 1, (LOOP*)Nullop, |
f05e27e5 |
388 | IVAL($2), scalar($7), |
a034e688 |
389 | $12, $10, $9)); |
f05e27e5 |
390 | #ifdef MAD |
f05e27e5 |
391 | forop = newUNOP(OP_NULL, 0, append_elem(OP_LINESEQ, |
392 | newSTATEOP(0, |
63031daf |
393 | CopLABEL_alloc(($1)->tk_lval.pval), |
700f8fa5 |
394 | ($5 ? $5 : newOP(OP_NULL, 0)) ), |
f05e27e5 |
395 | forop)); |
396 | |
397 | token_getmad($2,forop,'3'); |
398 | token_getmad($3,forop,'('); |
399 | token_getmad($6,forop,'1'); |
400 | token_getmad($8,forop,'2'); |
401 | token_getmad($11,forop,')'); |
402 | token_getmad($1,forop,'L'); |
403 | #else |
36c66720 |
404 | if ($5) { |
405 | forop = append_elem(OP_LINESEQ, |
63031daf |
406 | newSTATEOP(0, CopLABEL_alloc($1), $5), |
36c66720 |
407 | forop); |
408 | } |
409 | |
f05e27e5 |
410 | |
411 | #endif |
36c66720 |
412 | $$ = block_end($4, forop); } |
79072805 |
413 | | label block cont /* a block is a loop that happens once */ |
f05e27e5 |
414 | { $$ = newSTATEOP(0, PVAL($1), |
fb73857a |
415 | newWHILEOP(0, 1, (LOOP*)Nullop, |
f05e27e5 |
416 | NOLINE, Nullop, $2, $3, 0)); |
417 | TOKEN_GETMAD($1,((LISTOP*)$$)->op_first,'L'); } |
8d063cd8 |
418 | ; |
419 | |
0d863452 |
420 | /* Switch blocks */ |
421 | switch : label GIVEN '(' remember mydefsv mexpr ')' mblock |
53a7735b |
422 | { PL_parser->copline = (line_t) $2; |
0d863452 |
423 | $$ = block_end($4, |
f05e27e5 |
424 | newSTATEOP(0, PVAL($1), |
0d863452 |
425 | newGIVENOP($6, scope($8), |
426 | (PADOFFSET) $5) )); } |
427 | ; |
428 | |
a034e688 |
429 | /* determine whether there are any new my declarations */ |
430 | mintro : /* NULL */ |
431 | { $$ = (PL_min_intro_pending && |
432 | PL_max_intro_pending >= PL_min_intro_pending); |
433 | intro_my(); } |
434 | |
891be019 |
435 | /* Normal expression */ |
8d063cd8 |
436 | nexpr : /* NULL */ |
79072805 |
437 | { $$ = Nullop; } |
8d063cd8 |
438 | | sideff |
439 | ; |
440 | |
891be019 |
441 | /* Boolean expression */ |
8d063cd8 |
442 | texpr : /* NULL means true */ |
f05e27e5 |
443 | { YYSTYPE tmplval; |
444 | (void)scan_num("1", &tmplval); |
445 | $$ = tmplval.opval; } |
8d063cd8 |
446 | | expr |
447 | ; |
448 | |
891be019 |
449 | /* Inverted boolean expression */ |
55497cff |
450 | iexpr : expr |
451 | { $$ = invert(scalar($1)); } |
452 | ; |
453 | |
891be019 |
454 | /* Expression with its own lexical scope */ |
55497cff |
455 | mexpr : expr |
bbce6d69 |
456 | { $$ = $1; intro_my(); } |
457 | ; |
458 | |
459 | mnexpr : nexpr |
460 | { $$ = $1; intro_my(); } |
55497cff |
461 | ; |
462 | |
55497cff |
463 | miexpr : iexpr |
bbce6d69 |
464 | { $$ = $1; intro_my(); } |
55497cff |
465 | ; |
466 | |
891be019 |
467 | /* Optional "MAIN:"-style loop labels */ |
8d063cd8 |
468 | label : /* empty */ |
f05e27e5 |
469 | { |
470 | #ifdef MAD |
471 | YYSTYPE tmplval; |
472 | tmplval.pval = Nullch; |
473 | $$ = newTOKEN(OP_NULL, tmplval, 0); |
474 | #else |
475 | $$ = Nullch; |
476 | #endif |
477 | } |
32c2e4fb |
478 | | LABEL |
8d063cd8 |
479 | ; |
480 | |
f05e27e5 |
481 | /* Some kind of declaration - just hang on peg in the parse tree */ |
8d063cd8 |
482 | decl : format |
f05e27e5 |
483 | { $$ = $1; } |
8d063cd8 |
484 | | subrout |
f05e27e5 |
485 | { $$ = $1; } |
09bef843 |
486 | | mysubrout |
f05e27e5 |
487 | { $$ = $1; } |
a687059c |
488 | | package |
f05e27e5 |
489 | { $$ = $1; } |
a0d0e21e |
490 | | use |
f05e27e5 |
491 | { $$ = $1; } |
492 | |
493 | /* these two are only used by MAD */ |
494 | |
495 | | peg |
496 | { $$ = $1; } |
497 | ; |
498 | |
499 | peg : PEG |
500 | { $$ = newOP(OP_NULL,0); |
501 | TOKEN_GETMAD($1,$$,'p'); |
502 | } |
8d063cd8 |
503 | ; |
504 | |
718a7425 |
505 | format : FORMAT startformsub formname block |
5a5094bd |
506 | { SvREFCNT_inc_simple_void(PL_compcv); |
f05e27e5 |
507 | #ifdef MAD |
718a7425 |
508 | $$ = newFORM($2, $3, $4); |
f05e27e5 |
509 | prepend_madprops($1->tk_mad, $$, 'F'); |
510 | $1->tk_mad = 0; |
511 | token_free($1); |
512 | #else |
718a7425 |
513 | newFORM($2, $3, $4); |
30994c59 |
514 | $$ = Nullop; |
f05e27e5 |
515 | #endif |
516 | } |
44a8e56a |
517 | ; |
518 | |
519 | formname: WORD { $$ = $1; } |
520 | | /* NULL */ { $$ = Nullop; } |
8d063cd8 |
521 | ; |
522 | |
891be019 |
523 | /* Unimplemented "my sub foo { }" */ |
718a7425 |
524 | mysubrout: MYSUB startsub subname proto subattrlist subbody |
5a5094bd |
525 | { SvREFCNT_inc_simple_void(PL_compcv); |
f05e27e5 |
526 | #ifdef MAD |
718a7425 |
527 | $$ = newMYSUB($2, $3, $4, $5, $6); |
f05e27e5 |
528 | token_getmad($1,$$,'d'); |
529 | #else |
718a7425 |
530 | newMYSUB($2, $3, $4, $5, $6); |
30994c59 |
531 | $$ = Nullop; |
f05e27e5 |
532 | #endif |
533 | } |
09bef843 |
534 | ; |
535 | |
891be019 |
536 | /* Subroutine definition */ |
718a7425 |
537 | subrout : SUB startsub subname proto subattrlist subbody |
5a5094bd |
538 | { SvREFCNT_inc_simple_void(PL_compcv); |
f05e27e5 |
539 | #ifdef MAD |
035e2bcc |
540 | { |
541 | OP* o = newSVOP(OP_ANONCODE, 0, |
542 | (SV*)newATTRSUB($2, $3, $4, $5, $6)); |
543 | $$ = newOP(OP_NULL,0); |
544 | op_getmad(o,$$,'&'); |
545 | op_getmad($3,$$,'n'); |
546 | op_getmad($4,$$,'s'); |
547 | op_getmad($5,$$,'a'); |
548 | token_getmad($1,$$,'d'); |
549 | append_madprops($6->op_madprop, $$, 0); |
550 | $6->op_madprop = 0; |
551 | } |
f05e27e5 |
552 | #else |
718a7425 |
553 | newATTRSUB($2, $3, $4, $5, $6); |
f05e27e5 |
554 | $$ = Nullop; |
555 | #endif |
556 | } |
28757baa |
557 | ; |
558 | |
fa83b5b6 |
559 | startsub: /* NULL */ /* start a regular subroutine scope */ |
a8ff2fa6 |
560 | { $$ = start_subparse(FALSE, 0); |
561 | SAVEFREESV(PL_compcv); } |
f05e27e5 |
562 | |
28757baa |
563 | ; |
564 | |
565 | startanonsub: /* NULL */ /* start an anonymous subroutine scope */ |
a8ff2fa6 |
566 | { $$ = start_subparse(FALSE, CVf_ANON); |
567 | SAVEFREESV(PL_compcv); } |
28757baa |
568 | ; |
569 | |
44a8e56a |
570 | startformsub: /* NULL */ /* start a format subroutine scope */ |
a8ff2fa6 |
571 | { $$ = start_subparse(TRUE, 0); |
572 | SAVEFREESV(PL_compcv); } |
44a8e56a |
573 | ; |
574 | |
891be019 |
575 | /* Name of a subroutine - must be a bareword, could be special */ |
2596d9fe |
576 | subname : WORD { const char *const name = SvPV_nolen_const(((SVOP*)$1)->op_sv); |
e858de61 |
577 | if (strEQ(name, "BEGIN") || strEQ(name, "END") |
3c10abe3 |
578 | || strEQ(name, "INIT") || strEQ(name, "CHECK") |
579 | || strEQ(name, "UNITCHECK")) |
1aff0e91 |
580 | CvSPECIAL_on(PL_compcv); |
28757baa |
581 | $$ = $1; } |
a0d0e21e |
582 | ; |
583 | |
891be019 |
584 | /* Subroutine prototype */ |
4633a7c4 |
585 | proto : /* NULL */ |
586 | { $$ = Nullop; } |
587 | | THING |
588 | ; |
28757baa |
589 | |
891be019 |
590 | /* Optional list of subroutine attributes */ |
09bef843 |
591 | subattrlist: /* NULL */ |
592 | { $$ = Nullop; } |
593 | | COLONATTR THING |
f05e27e5 |
594 | { $$ = $2; |
595 | TOKEN_GETMAD($1,$$,':'); |
596 | } |
09bef843 |
597 | | COLONATTR |
f05e27e5 |
598 | { $$ = IF_MAD( |
599 | newOP(OP_NULL, 0), |
600 | Nullop |
601 | ); |
602 | TOKEN_GETMAD($1,$$,':'); |
603 | } |
09bef843 |
604 | ; |
605 | |
891be019 |
606 | /* List of attributes for a "my" variable declaration */ |
09bef843 |
607 | myattrlist: COLONATTR THING |
f05e27e5 |
608 | { $$ = $2; |
609 | TOKEN_GETMAD($1,$$,':'); |
610 | } |
09bef843 |
611 | | COLONATTR |
f05e27e5 |
612 | { $$ = IF_MAD( |
613 | newOP(OP_NULL, 0), |
614 | Nullop |
615 | ); |
616 | TOKEN_GETMAD($1,$$,':'); |
617 | } |
09bef843 |
618 | ; |
619 | |
891be019 |
620 | /* Subroutine body - either null or a block */ |
28757baa |
621 | subbody : block { $$ = $1; } |
f05e27e5 |
622 | | ';' { $$ = IF_MAD( |
623 | newOP(OP_NULL,0), |
624 | Nullop |
625 | ); |
53a7735b |
626 | PL_parser->expect = XSTATE; |
f05e27e5 |
627 | TOKEN_GETMAD($1,$$,';'); |
628 | } |
8d063cd8 |
629 | ; |
630 | |
a687059c |
631 | package : PACKAGE WORD ';' |
f05e27e5 |
632 | { |
633 | #ifdef MAD |
634 | $$ = package($2); |
635 | token_getmad($1,$$,'o'); |
636 | token_getmad($3,$$,';'); |
637 | #else |
638 | package($2); |
30994c59 |
639 | $$ = Nullop; |
f05e27e5 |
640 | #endif |
641 | } |
a687059c |
642 | ; |
643 | |
718a7425 |
644 | use : USE startsub |
1aff0e91 |
645 | { CvSPECIAL_on(PL_compcv); /* It's a BEGIN {} */ } |
28757baa |
646 | WORD WORD listexpr ';' |
5a5094bd |
647 | { SvREFCNT_inc_simple_void(PL_compcv); |
f05e27e5 |
648 | #ifdef MAD |
718a7425 |
649 | $$ = utilize(IVAL($1), $2, $4, $5, $6); |
f05e27e5 |
650 | token_getmad($1,$$,'o'); |
718a7425 |
651 | token_getmad($7,$$,';'); |
5486870f |
652 | if (PL_parser->rsfp_filters && |
653 | AvFILLp(PL_parser->rsfp_filters) >= 0) |
f05e27e5 |
654 | append_madprops(newMADPROP('!', MAD_PV, "", 0), $$, 0); |
655 | #else |
718a7425 |
656 | utilize(IVAL($1), $2, $4, $5, $6); |
30994c59 |
657 | $$ = Nullop; |
f05e27e5 |
658 | #endif |
659 | } |
85e6fe83 |
660 | ; |
661 | |
891be019 |
662 | /* Ordinary expressions; logical combinations */ |
a0d0e21e |
663 | expr : expr ANDOP expr |
f05e27e5 |
664 | { $$ = newLOGOP(OP_AND, 0, $1, $3); |
665 | TOKEN_GETMAD($2,$$,'o'); |
666 | } |
a0d0e21e |
667 | | expr OROP expr |
f05e27e5 |
668 | { $$ = newLOGOP(IVAL($2), 0, $1, $3); |
669 | TOKEN_GETMAD($2,$$,'o'); |
670 | } |
c963b151 |
671 | | expr DOROP expr |
f05e27e5 |
672 | { $$ = newLOGOP(OP_DOR, 0, $1, $3); |
673 | TOKEN_GETMAD($2,$$,'o'); |
674 | } |
fad39ff1 |
675 | | argexpr %prec PREC_LOW |
a0d0e21e |
676 | ; |
677 | |
891be019 |
678 | /* Expressions are a list of terms joined by commas */ |
a0d0e21e |
679 | argexpr : argexpr ',' |
f05e27e5 |
680 | { |
681 | #ifdef MAD |
682 | OP* op = newNULLLIST(); |
683 | token_getmad($2,op,','); |
684 | $$ = append_elem(OP_LIST, $1, op); |
685 | #else |
686 | $$ = $1; |
687 | #endif |
688 | } |
a0d0e21e |
689 | | argexpr ',' term |
f05e27e5 |
690 | { |
29522234 |
691 | OP* term = $3; |
f05e27e5 |
692 | DO_MAD( |
29522234 |
693 | term = newUNOP(OP_NULL, 0, term); |
694 | token_getmad($2,term,','); |
f05e27e5 |
695 | ) |
29522234 |
696 | $$ = append_elem(OP_LIST, $1, term); |
f05e27e5 |
697 | } |
fad39ff1 |
698 | | term %prec PREC_LOW |
8d063cd8 |
699 | ; |
700 | |
891be019 |
701 | /* List operators */ |
ad4673e5 |
702 | listop : LSTOP indirob argexpr /* map {...} @args or print $fh @args */ |
f05e27e5 |
703 | { $$ = convert(IVAL($1), OPf_STACKED, |
704 | prepend_elem(OP_LIST, newGVREF(IVAL($1),$2), $3) ); |
705 | TOKEN_GETMAD($1,$$,'o'); |
706 | } |
891be019 |
707 | | FUNC '(' indirob expr ')' /* print ($fh @args */ |
f05e27e5 |
708 | { $$ = convert(IVAL($1), OPf_STACKED, |
709 | prepend_elem(OP_LIST, newGVREF(IVAL($1),$3), $4) ); |
710 | TOKEN_GETMAD($1,$$,'o'); |
711 | TOKEN_GETMAD($2,$$,'('); |
712 | TOKEN_GETMAD($5,$$,')'); |
713 | } |
891be019 |
714 | | term ARROW method '(' listexprcom ')' /* $foo->bar(list) */ |
4633a7c4 |
715 | { $$ = convert(OP_ENTERSUB, OPf_STACKED, |
a0d0e21e |
716 | append_elem(OP_LIST, |
55497cff |
717 | prepend_elem(OP_LIST, scalar($1), $5), |
f05e27e5 |
718 | newUNOP(OP_METHOD, 0, $3))); |
719 | TOKEN_GETMAD($2,$$,'A'); |
720 | TOKEN_GETMAD($4,$$,'('); |
721 | TOKEN_GETMAD($6,$$,')'); |
722 | } |
891be019 |
723 | | term ARROW method /* $foo->bar */ |
b1524f17 |
724 | { $$ = convert(OP_ENTERSUB, OPf_STACKED, |
725 | append_elem(OP_LIST, scalar($1), |
f05e27e5 |
726 | newUNOP(OP_METHOD, 0, $3))); |
727 | TOKEN_GETMAD($2,$$,'A'); |
728 | } |
891be019 |
729 | | METHOD indirob listexpr /* new Class @args */ |
4633a7c4 |
730 | { $$ = convert(OP_ENTERSUB, OPf_STACKED, |
a0d0e21e |
731 | append_elem(OP_LIST, |
4633a7c4 |
732 | prepend_elem(OP_LIST, $2, $3), |
f05e27e5 |
733 | newUNOP(OP_METHOD, 0, $1))); |
734 | } |
891be019 |
735 | | FUNCMETH indirob '(' listexprcom ')' /* method $object (@args) */ |
4633a7c4 |
736 | { $$ = convert(OP_ENTERSUB, OPf_STACKED, |
a0d0e21e |
737 | append_elem(OP_LIST, |
4633a7c4 |
738 | prepend_elem(OP_LIST, $2, $4), |
f05e27e5 |
739 | newUNOP(OP_METHOD, 0, $1))); |
740 | TOKEN_GETMAD($3,$$,'('); |
741 | TOKEN_GETMAD($5,$$,')'); |
742 | } |
891be019 |
743 | | LSTOP listexpr /* print @args */ |
f05e27e5 |
744 | { $$ = convert(IVAL($1), 0, $2); |
745 | TOKEN_GETMAD($1,$$,'o'); |
746 | } |
891be019 |
747 | | FUNC '(' listexprcom ')' /* print (@args) */ |
f05e27e5 |
748 | { $$ = convert(IVAL($1), 0, $3); |
749 | TOKEN_GETMAD($1,$$,'o'); |
750 | TOKEN_GETMAD($2,$$,'('); |
751 | TOKEN_GETMAD($4,$$,')'); |
752 | } |
718a7425 |
753 | | LSTOPSUB startanonsub block /* sub f(&@); f { foo } ... */ |
5a5094bd |
754 | { SvREFCNT_inc_simple_void(PL_compcv); |
29522234 |
755 | $<opval>$ = newANONATTRSUB($2, 0, Nullop, $3); } |
891be019 |
756 | listexpr %prec LSTOP /* ... @bar */ |
4633a7c4 |
757 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
28757baa |
758 | append_elem(OP_LIST, |
29522234 |
759 | prepend_elem(OP_LIST, $<opval>4, $5), $1)); |
f05e27e5 |
760 | } |
a687059c |
761 | ; |
762 | |
891be019 |
763 | /* Names of methods. May use $object->$methodname */ |
a0d0e21e |
764 | method : METHOD |
765 | | scalar |
766 | ; |
767 | |
891be019 |
768 | /* Some kind of subscripted expression */ |
769 | subscripted: star '{' expr ';' '}' /* *main::{something} */ |
770 | /* In this and all the hash accessors, ';' is |
771 | * provided by the tokeniser */ |
264e1af3 |
772 | { $$ = newBINOP(OP_GELEM, 0, $1, scalar($3)); |
53a7735b |
773 | PL_parser->expect = XOPERATOR; |
f05e27e5 |
774 | TOKEN_GETMAD($2,$$,'{'); |
775 | TOKEN_GETMAD($4,$$,';'); |
776 | TOKEN_GETMAD($5,$$,'}'); |
777 | } |
891be019 |
778 | | scalar '[' expr ']' /* $array[$element] */ |
f05e27e5 |
779 | { $$ = newBINOP(OP_AELEM, 0, oopsAV($1), scalar($3)); |
780 | TOKEN_GETMAD($2,$$,'['); |
781 | TOKEN_GETMAD($4,$$,']'); |
782 | } |
891be019 |
783 | | term ARROW '[' expr ']' /* somearef->[$element] */ |
fad39ff1 |
784 | { $$ = newBINOP(OP_AELEM, 0, |
785 | ref(newAVREF($1),OP_RV2AV), |
f05e27e5 |
786 | scalar($4)); |
787 | TOKEN_GETMAD($2,$$,'a'); |
788 | TOKEN_GETMAD($3,$$,'['); |
789 | TOKEN_GETMAD($5,$$,']'); |
790 | } |
891be019 |
791 | | subscripted '[' expr ']' /* $foo->[$bar]->[$baz] */ |
fad39ff1 |
792 | { $$ = newBINOP(OP_AELEM, 0, |
793 | ref(newAVREF($1),OP_RV2AV), |
f05e27e5 |
794 | scalar($3)); |
795 | TOKEN_GETMAD($2,$$,'['); |
796 | TOKEN_GETMAD($4,$$,']'); |
797 | } |
891be019 |
798 | | scalar '{' expr ';' '}' /* $foo->{bar();} */ |
fad39ff1 |
799 | { $$ = newBINOP(OP_HELEM, 0, oopsHV($1), jmaybe($3)); |
53a7735b |
800 | PL_parser->expect = XOPERATOR; |
f05e27e5 |
801 | TOKEN_GETMAD($2,$$,'{'); |
802 | TOKEN_GETMAD($4,$$,';'); |
803 | TOKEN_GETMAD($5,$$,'}'); |
804 | } |
891be019 |
805 | | term ARROW '{' expr ';' '}' /* somehref->{bar();} */ |
fad39ff1 |
806 | { $$ = newBINOP(OP_HELEM, 0, |
807 | ref(newHVREF($1),OP_RV2HV), |
808 | jmaybe($4)); |
53a7735b |
809 | PL_parser->expect = XOPERATOR; |
f05e27e5 |
810 | TOKEN_GETMAD($2,$$,'a'); |
811 | TOKEN_GETMAD($3,$$,'{'); |
812 | TOKEN_GETMAD($5,$$,';'); |
813 | TOKEN_GETMAD($6,$$,'}'); |
814 | } |
891be019 |
815 | | subscripted '{' expr ';' '}' /* $foo->[bar]->{baz;} */ |
fad39ff1 |
816 | { $$ = newBINOP(OP_HELEM, 0, |
817 | ref(newHVREF($1),OP_RV2HV), |
818 | jmaybe($3)); |
53a7735b |
819 | PL_parser->expect = XOPERATOR; |
f05e27e5 |
820 | TOKEN_GETMAD($2,$$,'{'); |
821 | TOKEN_GETMAD($4,$$,';'); |
822 | TOKEN_GETMAD($5,$$,'}'); |
823 | } |
891be019 |
824 | | term ARROW '(' ')' /* $subref->() */ |
fad39ff1 |
825 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
f05e27e5 |
826 | newCVREF(0, scalar($1))); |
827 | TOKEN_GETMAD($2,$$,'a'); |
828 | TOKEN_GETMAD($3,$$,'('); |
829 | TOKEN_GETMAD($4,$$,')'); |
830 | } |
891be019 |
831 | | term ARROW '(' expr ')' /* $subref->(@args) */ |
fad39ff1 |
832 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
833 | append_elem(OP_LIST, $4, |
f05e27e5 |
834 | newCVREF(0, scalar($1)))); |
835 | TOKEN_GETMAD($2,$$,'a'); |
836 | TOKEN_GETMAD($3,$$,'('); |
837 | TOKEN_GETMAD($5,$$,')'); |
838 | } |
fad39ff1 |
839 | |
891be019 |
840 | | subscripted '(' expr ')' /* $foo->{bar}->(@args) */ |
fad39ff1 |
841 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
842 | append_elem(OP_LIST, $3, |
f05e27e5 |
843 | newCVREF(0, scalar($1)))); |
844 | TOKEN_GETMAD($2,$$,'('); |
845 | TOKEN_GETMAD($4,$$,')'); |
846 | } |
891be019 |
847 | | subscripted '(' ')' /* $foo->{bar}->() */ |
fad39ff1 |
848 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
f05e27e5 |
849 | newCVREF(0, scalar($1))); |
850 | TOKEN_GETMAD($2,$$,'('); |
851 | TOKEN_GETMAD($3,$$,')'); |
852 | } |
9a9798c2 |
853 | | '(' expr ')' '[' expr ']' /* list slice */ |
f05e27e5 |
854 | { $$ = newSLICEOP(0, $5, $2); |
855 | TOKEN_GETMAD($1,$$,'('); |
856 | TOKEN_GETMAD($3,$$,')'); |
857 | TOKEN_GETMAD($4,$$,'['); |
858 | TOKEN_GETMAD($6,$$,']'); |
859 | } |
9a9798c2 |
860 | | '(' ')' '[' expr ']' /* empty list slice! */ |
f05e27e5 |
861 | { $$ = newSLICEOP(0, $4, Nullop); |
862 | TOKEN_GETMAD($1,$$,'('); |
863 | TOKEN_GETMAD($2,$$,')'); |
864 | TOKEN_GETMAD($3,$$,'['); |
865 | TOKEN_GETMAD($5,$$,']'); |
866 | } |
891be019 |
867 | ; |
fad39ff1 |
868 | |
891be019 |
869 | /* Binary operators between terms */ |
f05e27e5 |
870 | termbinop: term ASSIGNOP term /* $x = $y */ |
871 | { $$ = newASSIGNOP(OPf_STACKED, $1, IVAL($2), $3); |
872 | TOKEN_GETMAD($2,$$,'o'); |
873 | } |
891be019 |
874 | | term POWOP term /* $x ** $y */ |
f05e27e5 |
875 | { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3)); |
876 | TOKEN_GETMAD($2,$$,'o'); |
877 | } |
891be019 |
878 | | term MULOP term /* $x * $y, $x x $y */ |
f05e27e5 |
879 | { if (IVAL($2) != OP_REPEAT) |
79072805 |
880 | scalar($1); |
f05e27e5 |
881 | $$ = newBINOP(IVAL($2), 0, $1, scalar($3)); |
882 | TOKEN_GETMAD($2,$$,'o'); |
883 | } |
891be019 |
884 | | term ADDOP term /* $x + $y */ |
f05e27e5 |
885 | { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3)); |
886 | TOKEN_GETMAD($2,$$,'o'); |
887 | } |
891be019 |
888 | | term SHIFTOP term /* $x >> $y, $x << $y */ |
f05e27e5 |
889 | { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3)); |
890 | TOKEN_GETMAD($2,$$,'o'); |
891 | } |
891be019 |
892 | | term RELOP term /* $x > $y, etc. */ |
f05e27e5 |
893 | { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3)); |
894 | TOKEN_GETMAD($2,$$,'o'); |
895 | } |
891be019 |
896 | | term EQOP term /* $x == $y, $x eq $y */ |
f05e27e5 |
897 | { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3)); |
898 | TOKEN_GETMAD($2,$$,'o'); |
899 | } |
891be019 |
900 | | term BITANDOP term /* $x & $y */ |
f05e27e5 |
901 | { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3)); |
902 | TOKEN_GETMAD($2,$$,'o'); |
903 | } |
891be019 |
904 | | term BITOROP term /* $x | $y */ |
f05e27e5 |
905 | { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3)); |
906 | TOKEN_GETMAD($2,$$,'o'); |
907 | } |
891be019 |
908 | | term DOTDOT term /* $x..$y, $x...$y */ |
f05e27e5 |
909 | { |
910 | $$ = newRANGE(IVAL($2), scalar($1), scalar($3)); |
035e2bcc |
911 | DO_MAD({ |
f05e27e5 |
912 | UNOP *op; |
913 | op = (UNOP*)$$; |
914 | op = (UNOP*)op->op_first; /* get to flop */ |
915 | op = (UNOP*)op->op_first; /* get to flip */ |
916 | op = (UNOP*)op->op_first; /* get to range */ |
917 | token_getmad($2,(OP*)op,'o'); |
035e2bcc |
918 | }) |
f05e27e5 |
919 | } |
891be019 |
920 | | term ANDAND term /* $x && $y */ |
f05e27e5 |
921 | { $$ = newLOGOP(OP_AND, 0, $1, $3); |
922 | TOKEN_GETMAD($2,$$,'o'); |
923 | } |
891be019 |
924 | | term OROR term /* $x || $y */ |
f05e27e5 |
925 | { $$ = newLOGOP(OP_OR, 0, $1, $3); |
926 | TOKEN_GETMAD($2,$$,'o'); |
927 | } |
c963b151 |
928 | | term DORDOR term /* $x // $y */ |
f05e27e5 |
929 | { $$ = newLOGOP(OP_DOR, 0, $1, $3); |
930 | TOKEN_GETMAD($2,$$,'o'); |
931 | } |
891be019 |
932 | | term MATCHOP term /* $x =~ /$y/ */ |
f05e27e5 |
933 | { $$ = bind_match(IVAL($2), $1, $3); |
934 | TOKEN_GETMAD($2, |
935 | ($$->op_type == OP_NOT |
936 | ? ((UNOP*)$$)->op_first : $$), |
937 | '~'); |
938 | } |
891be019 |
939 | ; |
8d063cd8 |
940 | |
891be019 |
941 | /* Unary operators and terms */ |
942 | termunop : '-' term %prec UMINUS /* -$x */ |
f05e27e5 |
943 | { $$ = newUNOP(OP_NEGATE, 0, scalar($2)); |
944 | TOKEN_GETMAD($1,$$,'o'); |
945 | } |
891be019 |
946 | | '+' term %prec UMINUS /* +$x */ |
f05e27e5 |
947 | { $$ = IF_MAD( |
948 | newUNOP(OP_NULL, 0, $2), |
949 | $2 |
950 | ); |
951 | TOKEN_GETMAD($1,$$,'+'); |
952 | } |
891be019 |
953 | | '!' term /* !$x */ |
f05e27e5 |
954 | { $$ = newUNOP(OP_NOT, 0, scalar($2)); |
955 | TOKEN_GETMAD($1,$$,'o'); |
956 | } |
891be019 |
957 | | '~' term /* ~$x */ |
f05e27e5 |
958 | { $$ = newUNOP(OP_COMPLEMENT, 0, scalar($2)); |
959 | TOKEN_GETMAD($1,$$,'o'); |
960 | } |
891be019 |
961 | | term POSTINC /* $x++ */ |
79072805 |
962 | { $$ = newUNOP(OP_POSTINC, 0, |
f05e27e5 |
963 | mod(scalar($1), OP_POSTINC)); |
964 | TOKEN_GETMAD($2,$$,'o'); |
965 | } |
891be019 |
966 | | term POSTDEC /* $x-- */ |
79072805 |
967 | { $$ = newUNOP(OP_POSTDEC, 0, |
f05e27e5 |
968 | mod(scalar($1), OP_POSTDEC)); |
969 | TOKEN_GETMAD($2,$$,'o'); |
970 | } |
891be019 |
971 | | PREINC term /* ++$x */ |
79072805 |
972 | { $$ = newUNOP(OP_PREINC, 0, |
f05e27e5 |
973 | mod(scalar($2), OP_PREINC)); |
974 | TOKEN_GETMAD($1,$$,'o'); |
975 | } |
891be019 |
976 | | PREDEC term /* --$x */ |
79072805 |
977 | { $$ = newUNOP(OP_PREDEC, 0, |
f05e27e5 |
978 | mod(scalar($2), OP_PREDEC)); |
979 | TOKEN_GETMAD($1,$$,'o'); |
980 | } |
891be019 |
981 | |
982 | ; |
983 | |
984 | /* Constructors for anonymous data */ |
985 | anonymous: '[' expr ']' |
f05e27e5 |
986 | { $$ = newANONLIST($2); |
987 | TOKEN_GETMAD($1,$$,'['); |
988 | TOKEN_GETMAD($3,$$,']'); |
989 | } |
891be019 |
990 | | '[' ']' |
f05e27e5 |
991 | { $$ = newANONLIST(Nullop); |
992 | TOKEN_GETMAD($1,$$,'['); |
993 | TOKEN_GETMAD($2,$$,']'); |
994 | } |
891be019 |
995 | | HASHBRACK expr ';' '}' %prec '(' /* { foo => "Bar" } */ |
f05e27e5 |
996 | { $$ = newANONHASH($2); |
997 | TOKEN_GETMAD($1,$$,'{'); |
998 | TOKEN_GETMAD($3,$$,';'); |
999 | TOKEN_GETMAD($4,$$,'}'); |
1000 | } |
891be019 |
1001 | | HASHBRACK ';' '}' %prec '(' /* { } (';' by tokener) */ |
f05e27e5 |
1002 | { $$ = newANONHASH(Nullop); |
1003 | TOKEN_GETMAD($1,$$,'{'); |
1004 | TOKEN_GETMAD($2,$$,';'); |
1005 | TOKEN_GETMAD($3,$$,'}'); |
1006 | } |
718a7425 |
1007 | | ANONSUB startanonsub proto subattrlist block %prec '(' |
5a5094bd |
1008 | { SvREFCNT_inc_simple_void(PL_compcv); |
718a7425 |
1009 | $$ = newANONATTRSUB($2, $3, $4, $5); |
f05e27e5 |
1010 | TOKEN_GETMAD($1,$$,'o'); |
718a7425 |
1011 | OP_GETMAD($3,$$,'s'); |
1012 | OP_GETMAD($4,$$,'a'); |
f05e27e5 |
1013 | } |
891be019 |
1014 | |
1015 | ; |
1016 | |
1017 | /* Things called with "do" */ |
1018 | termdo : DO term %prec UNIOP /* do $filename */ |
123d08c9 |
1019 | { $$ = dofile($2, IVAL($1)); |
f05e27e5 |
1020 | TOKEN_GETMAD($1,$$,'o'); |
1021 | } |
891be019 |
1022 | | DO block %prec '(' /* do { code */ |
f05e27e5 |
1023 | { $$ = newUNOP(OP_NULL, OPf_SPECIAL, scope($2)); |
1024 | TOKEN_GETMAD($1,$$,'D'); |
1025 | } |
891be019 |
1026 | | DO WORD '(' ')' /* do somesub() */ |
1027 | { $$ = newUNOP(OP_ENTERSUB, |
1028 | OPf_SPECIAL|OPf_STACKED, |
1029 | prepend_elem(OP_LIST, |
1030 | scalar(newCVREF( |
1031 | (OPpENTERSUB_AMPER<<8), |
1032 | scalar($2) |
f05e27e5 |
1033 | )),Nullop)); dep(); |
1034 | TOKEN_GETMAD($1,$$,'o'); |
1035 | TOKEN_GETMAD($3,$$,'('); |
1036 | TOKEN_GETMAD($4,$$,')'); |
1037 | } |
891be019 |
1038 | | DO WORD '(' expr ')' /* do somesub(@args) */ |
1039 | { $$ = newUNOP(OP_ENTERSUB, |
1040 | OPf_SPECIAL|OPf_STACKED, |
1041 | append_elem(OP_LIST, |
1042 | $4, |
1043 | scalar(newCVREF( |
1044 | (OPpENTERSUB_AMPER<<8), |
1045 | scalar($2) |
f05e27e5 |
1046 | )))); dep(); |
1047 | TOKEN_GETMAD($1,$$,'o'); |
1048 | TOKEN_GETMAD($3,$$,'('); |
1049 | TOKEN_GETMAD($5,$$,')'); |
1050 | } |
891be019 |
1051 | | DO scalar '(' ')' /* do $subref () */ |
1052 | { $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED, |
1053 | prepend_elem(OP_LIST, |
f05e27e5 |
1054 | scalar(newCVREF(0,scalar($2))), Nullop)); dep(); |
1055 | TOKEN_GETMAD($1,$$,'o'); |
1056 | TOKEN_GETMAD($3,$$,'('); |
1057 | TOKEN_GETMAD($4,$$,')'); |
1058 | } |
891be019 |
1059 | | DO scalar '(' expr ')' /* do $subref (@args) */ |
1060 | { $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED, |
1061 | prepend_elem(OP_LIST, |
1062 | $4, |
f05e27e5 |
1063 | scalar(newCVREF(0,scalar($2))))); dep(); |
1064 | TOKEN_GETMAD($1,$$,'o'); |
1065 | TOKEN_GETMAD($3,$$,'('); |
1066 | TOKEN_GETMAD($5,$$,')'); |
1067 | } |
891be019 |
1068 | |
1069 | ; |
1070 | |
1071 | term : termbinop |
1072 | | termunop |
1073 | | anonymous |
1074 | | termdo |
e9bdcc27 |
1075 | | term '?' term ':' term |
f05e27e5 |
1076 | { $$ = newCONDOP(0, $1, $3, $5); |
1077 | TOKEN_GETMAD($2,$$,'?'); |
1078 | TOKEN_GETMAD($4,$$,':'); |
1079 | } |
891be019 |
1080 | | REFGEN term /* \$x, \@y, \%z */ |
f05e27e5 |
1081 | { $$ = newUNOP(OP_REFGEN, 0, mod($2,OP_REFGEN)); |
1082 | TOKEN_GETMAD($1,$$,'o'); |
1083 | } |
09bef843 |
1084 | | myattrterm %prec UNIOP |
1085 | { $$ = $1; } |
1086 | | LOCAL term %prec UNIOP |
f05e27e5 |
1087 | { $$ = localize($2,IVAL($1)); |
dde83331 |
1088 | TOKEN_GETMAD($1,$$,'k'); |
f05e27e5 |
1089 | } |
a0d0e21e |
1090 | | '(' expr ')' |
f05e27e5 |
1091 | { $$ = sawparens(IF_MAD(newUNOP(OP_NULL,0,$2), $2)); |
1092 | TOKEN_GETMAD($1,$$,'('); |
1093 | TOKEN_GETMAD($3,$$,')'); |
1094 | } |
8d063cd8 |
1095 | | '(' ')' |
f05e27e5 |
1096 | { $$ = sawparens(newNULLLIST()); |
1097 | TOKEN_GETMAD($1,$$,'('); |
1098 | TOKEN_GETMAD($2,$$,')'); |
1099 | } |
79072805 |
1100 | | scalar %prec '(' |
8d063cd8 |
1101 | { $$ = $1; } |
79072805 |
1102 | | star %prec '(' |
8d063cd8 |
1103 | { $$ = $1; } |
79072805 |
1104 | | hsh %prec '(' |
8d063cd8 |
1105 | { $$ = $1; } |
79072805 |
1106 | | ary %prec '(' |
8d063cd8 |
1107 | { $$ = $1; } |
891be019 |
1108 | | arylen %prec '(' /* $#x, $#{ something } */ |
79072805 |
1109 | { $$ = newUNOP(OP_AV2ARYLEN, 0, ref($1, OP_AV2ARYLEN));} |
fad39ff1 |
1110 | | subscripted |
1111 | { $$ = $1; } |
891be019 |
1112 | | ary '[' expr ']' /* array slice */ |
79072805 |
1113 | { $$ = prepend_elem(OP_ASLICE, |
1114 | newOP(OP_PUSHMARK, 0), |
79072805 |
1115 | newLISTOP(OP_ASLICE, 0, |
1116 | list($3), |
f05e27e5 |
1117 | ref($1, OP_ASLICE))); |
1118 | TOKEN_GETMAD($2,$$,'['); |
1119 | TOKEN_GETMAD($4,$$,']'); |
1120 | } |
891be019 |
1121 | | ary '{' expr ';' '}' /* @hash{@keys} */ |
79072805 |
1122 | { $$ = prepend_elem(OP_HSLICE, |
1123 | newOP(OP_PUSHMARK, 0), |
79072805 |
1124 | newLISTOP(OP_HSLICE, 0, |
1125 | list($3), |
a0d0e21e |
1126 | ref(oopsHV($1), OP_HSLICE))); |
53a7735b |
1127 | PL_parser->expect = XOPERATOR; |
f05e27e5 |
1128 | TOKEN_GETMAD($2,$$,'{'); |
1129 | TOKEN_GETMAD($4,$$,';'); |
1130 | TOKEN_GETMAD($5,$$,'}'); |
1131 | } |
79072805 |
1132 | | THING %prec '(' |
1133 | { $$ = $1; } |
891be019 |
1134 | | amper /* &foo; */ |
c07a80fd |
1135 | { $$ = newUNOP(OP_ENTERSUB, 0, scalar($1)); } |
ecb2f335 |
1136 | | amper '(' ')' /* &foo() */ |
f05e27e5 |
1137 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, scalar($1)); |
1138 | TOKEN_GETMAD($2,$$,'('); |
1139 | TOKEN_GETMAD($3,$$,')'); |
1140 | } |
891be019 |
1141 | | amper '(' expr ')' /* &foo(@args) */ |
f05e27e5 |
1142 | { |
1143 | $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
1144 | append_elem(OP_LIST, $3, scalar($1))); |
035e2bcc |
1145 | DO_MAD({ |
f05e27e5 |
1146 | OP* op = $$; |
1147 | if (op->op_type == OP_CONST) { /* defeat const fold */ |
1148 | op = (OP*)op->op_madprop->mad_val; |
1149 | } |
1150 | token_getmad($2,op,'('); |
1151 | token_getmad($4,op,')'); |
035e2bcc |
1152 | }) |
f05e27e5 |
1153 | } |
891be019 |
1154 | | NOAMP WORD listexpr /* foo(@args) */ |
a0d0e21e |
1155 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
f05e27e5 |
1156 | append_elem(OP_LIST, $3, scalar($2))); |
1157 | TOKEN_GETMAD($1,$$,'o'); |
1158 | } |
891be019 |
1159 | | LOOPEX /* loop exiting command (goto, last, dump, etc) */ |
f05e27e5 |
1160 | { $$ = newOP(IVAL($1), OPf_SPECIAL); |
1161 | PL_hints |= HINT_BLOCK_SCOPE; |
1162 | TOKEN_GETMAD($1,$$,'o'); |
1163 | } |
a0d0e21e |
1164 | | LOOPEX term |
f05e27e5 |
1165 | { $$ = newLOOPEX(IVAL($1),$2); |
1166 | TOKEN_GETMAD($1,$$,'o'); |
1167 | } |
891be019 |
1168 | | NOTOP argexpr /* not $foo */ |
f05e27e5 |
1169 | { $$ = newUNOP(OP_NOT, 0, scalar($2)); |
1170 | TOKEN_GETMAD($1,$$,'o'); |
1171 | } |
891be019 |
1172 | | UNIOP /* Unary op, $_ implied */ |
f05e27e5 |
1173 | { $$ = newOP(IVAL($1), 0); |
1174 | TOKEN_GETMAD($1,$$,'o'); |
1175 | } |
1176 | | UNIOP block /* eval { foo }* */ |
1177 | { $$ = newUNOP(IVAL($1), 0, $2); |
1178 | TOKEN_GETMAD($1,$$,'o'); |
1179 | } |
891be019 |
1180 | | UNIOP term /* Unary op */ |
f05e27e5 |
1181 | { $$ = newUNOP(IVAL($1), 0, $2); |
1182 | TOKEN_GETMAD($1,$$,'o'); |
1183 | } |
d2fdf8fd |
1184 | | REQUIRE /* require, $_ implied */ |
1185 | { $$ = newOP(OP_REQUIRE, $1 ? OPf_SPECIAL : 0); |
1186 | TOKEN_GETMAD($1,$$,'o'); |
1187 | } |
1188 | | REQUIRE term /* require Foo */ |
1189 | { $$ = newUNOP(OP_REQUIRE, $1 ? OPf_SPECIAL : 0, $2); |
1190 | TOKEN_GETMAD($1,$$,'o'); |
1191 | } |
3cd0a11a |
1192 | | UNIOPSUB |
1193 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, scalar($1)); } |
891be019 |
1194 | | UNIOPSUB term /* Sub treated as unop */ |
4633a7c4 |
1195 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
1196 | append_elem(OP_LIST, $2, scalar($1))); } |
891be019 |
1197 | | FUNC0 /* Nullary operator */ |
f05e27e5 |
1198 | { $$ = newOP(IVAL($1), 0); |
1199 | TOKEN_GETMAD($1,$$,'o'); |
1200 | } |
ae986130 |
1201 | | FUNC0 '(' ')' |
f05e27e5 |
1202 | { $$ = newOP(IVAL($1), 0); |
1203 | TOKEN_GETMAD($1,$$,'o'); |
1204 | TOKEN_GETMAD($2,$$,'('); |
1205 | TOKEN_GETMAD($3,$$,')'); |
1206 | } |
891be019 |
1207 | | FUNC0SUB /* Sub treated as nullop */ |
28757baa |
1208 | { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, |
4633a7c4 |
1209 | scalar($1)); } |
891be019 |
1210 | | FUNC1 '(' ')' /* not () */ |
f05e27e5 |
1211 | { $$ = (IVAL($1) == OP_NOT) |
1212 | ? newUNOP(IVAL($1), 0, newSVOP(OP_CONST, 0, newSViv(0))) |
1213 | : newOP(IVAL($1), OPf_SPECIAL); |
1214 | |
1215 | TOKEN_GETMAD($1,$$,'o'); |
1216 | TOKEN_GETMAD($2,$$,'('); |
1217 | TOKEN_GETMAD($3,$$,')'); |
1218 | } |
891be019 |
1219 | | FUNC1 '(' expr ')' /* not($foo) */ |
f05e27e5 |
1220 | { $$ = newUNOP(IVAL($1), 0, $3); |
1221 | TOKEN_GETMAD($1,$$,'o'); |
1222 | TOKEN_GETMAD($2,$$,'('); |
1223 | TOKEN_GETMAD($4,$$,')'); |
1224 | } |
1225 | | PMFUNC '(' argexpr ')' /* m//, s///, tr/// */ |
1226 | { $$ = pmruntime($1, $3, 1); |
1227 | TOKEN_GETMAD($2,$$,'('); |
1228 | TOKEN_GETMAD($4,$$,')'); |
1229 | } |
79072805 |
1230 | | WORD |
378cc40b |
1231 | | listop |
8d063cd8 |
1232 | ; |
1233 | |
891be019 |
1234 | /* "my" declarations, with optional attributes */ |
09bef843 |
1235 | myattrterm: MY myterm myattrlist |
f05e27e5 |
1236 | { $$ = my_attrs($2,$3); |
1237 | DO_MAD( |
1238 | token_getmad($1,$$,'d'); |
1239 | append_madprops($3->op_madprop, $$, 'a'); |
1240 | $3->op_madprop = 0; |
1241 | ) |
1242 | } |
09bef843 |
1243 | | MY myterm |
f05e27e5 |
1244 | { $$ = localize($2,IVAL($1)); |
1245 | TOKEN_GETMAD($1,$$,'d'); |
1246 | } |
09bef843 |
1247 | ; |
1248 | |
891be019 |
1249 | /* Things that can be "my"'d */ |
09bef843 |
1250 | myterm : '(' expr ')' |
f05e27e5 |
1251 | { $$ = sawparens($2); |
1252 | TOKEN_GETMAD($1,$$,'('); |
1253 | TOKEN_GETMAD($3,$$,')'); |
1254 | } |
09bef843 |
1255 | | '(' ')' |
f05e27e5 |
1256 | { $$ = sawparens(newNULLLIST()); |
1257 | TOKEN_GETMAD($1,$$,'('); |
1258 | TOKEN_GETMAD($2,$$,')'); |
1259 | } |
09bef843 |
1260 | | scalar %prec '(' |
1261 | { $$ = $1; } |
1262 | | hsh %prec '(' |
1263 | { $$ = $1; } |
1264 | | ary %prec '(' |
1265 | { $$ = $1; } |
1266 | ; |
1267 | |
891be019 |
1268 | /* Basic list expressions */ |
fad39ff1 |
1269 | listexpr: /* NULL */ %prec PREC_LOW |
8990e307 |
1270 | { $$ = Nullop; } |
fad39ff1 |
1271 | | argexpr %prec PREC_LOW |
a0d0e21e |
1272 | { $$ = $1; } |
1273 | ; |
1274 | |
1275 | listexprcom: /* NULL */ |
1276 | { $$ = Nullop; } |
79072805 |
1277 | | expr |
1278 | { $$ = $1; } |
a0d0e21e |
1279 | | expr ',' |
f05e27e5 |
1280 | { |
1281 | #ifdef MAD |
1282 | OP* op = newNULLLIST(); |
1283 | token_getmad($2,op,','); |
1284 | $$ = append_elem(OP_LIST, $1, op); |
1285 | #else |
1286 | $$ = $1; |
1287 | #endif |
1288 | |
1289 | } |
79072805 |
1290 | ; |
1291 | |
891be019 |
1292 | /* A little bit of trickery to make "for my $foo (@bar)" actually be |
1293 | lexical */ |
55497cff |
1294 | my_scalar: scalar |
12bd6ede |
1295 | { PL_parser->in_my = 0; $$ = my($1); } |
55497cff |
1296 | ; |
1297 | |
79072805 |
1298 | amper : '&' indirob |
f05e27e5 |
1299 | { $$ = newCVREF(IVAL($1),$2); |
1300 | TOKEN_GETMAD($1,$$,'&'); |
1301 | } |
a687059c |
1302 | ; |
1303 | |
79072805 |
1304 | scalar : '$' indirob |
f05e27e5 |
1305 | { $$ = newSVREF($2); |
1306 | TOKEN_GETMAD($1,$$,'$'); |
1307 | } |
a687059c |
1308 | ; |
1309 | |
79072805 |
1310 | ary : '@' indirob |
f05e27e5 |
1311 | { $$ = newAVREF($2); |
1312 | TOKEN_GETMAD($1,$$,'@'); |
1313 | } |
79072805 |
1314 | ; |
1315 | |
1316 | hsh : '%' indirob |
f05e27e5 |
1317 | { $$ = newHVREF($2); |
1318 | TOKEN_GETMAD($1,$$,'%'); |
1319 | } |
79072805 |
1320 | ; |
1321 | |
1322 | arylen : DOLSHARP indirob |
f05e27e5 |
1323 | { $$ = newAVREF($2); |
1324 | TOKEN_GETMAD($1,$$,'l'); |
1325 | } |
79072805 |
1326 | ; |
1327 | |
1328 | star : '*' indirob |
f05e27e5 |
1329 | { $$ = newGVREF(0,$2); |
1330 | TOKEN_GETMAD($1,$$,'*'); |
1331 | } |
79072805 |
1332 | ; |
1333 | |
891be019 |
1334 | /* Indirect objects */ |
79072805 |
1335 | indirob : WORD |
1336 | { $$ = scalar($1); } |
fad39ff1 |
1337 | | scalar %prec PREC_LOW |
f05e27e5 |
1338 | { $$ = scalar($1); } |
79072805 |
1339 | | block |
a0d0e21e |
1340 | { $$ = scope($1); } |
79072805 |
1341 | |
93a17b20 |
1342 | | PRIVATEREF |
1343 | { $$ = $1; } |
8d063cd8 |
1344 | ; |