1 #ifndef REGPARSE_H 2 #define REGPARSE_H 3 /********************************************************************** 4 regparse.h - Oniguruma (regular expression library) 5 **********************************************************************/ 6 /*- 7 * Copyright (c) 2002-2007 K.Kosako <sndgk393 AT ybb DOT ne DOT jp> 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include "regint.h" 33 34 /* node type */ 35 #define NT_STR 0 36 #define NT_CCLASS 1 37 #define NT_CTYPE 2 38 #define NT_CANY 3 39 #define NT_BREF 4 40 #define NT_QTFR 5 41 #define NT_ENCLOSE 6 42 #define NT_ANCHOR 7 43 #define NT_LIST 8 44 #define NT_ALT 9 45 #define NT_CALL 10 46 47 /* node type bit */ 48 #define NTYPE2BIT(type) (1<<(type)) 49 50 #define BIT_NT_STR NTYPE2BIT(NT_STR) 51 #define BIT_NT_CCLASS NTYPE2BIT(NT_CCLASS) 52 #define BIT_NT_CTYPE NTYPE2BIT(NT_CTYPE) 53 #define BIT_NT_CANY NTYPE2BIT(NT_CANY) 54 #define BIT_NT_BREF NTYPE2BIT(NT_BREF) 55 #define BIT_NT_QTFR NTYPE2BIT(NT_QTFR) 56 #define BIT_NT_ENCLOSE NTYPE2BIT(NT_ENCLOSE) 57 #define BIT_NT_ANCHOR NTYPE2BIT(NT_ANCHOR) 58 #define BIT_NT_LIST NTYPE2BIT(NT_LIST) 59 #define BIT_NT_ALT NTYPE2BIT(NT_ALT) 60 #define BIT_NT_CALL NTYPE2BIT(NT_CALL) 61 62 #define IS_NODE_TYPE_SIMPLE(type) \ 63 ((NTYPE2BIT(type) & (BIT_NT_STR | BIT_NT_CCLASS | BIT_NT_CTYPE |\ 64 BIT_NT_CANY | BIT_NT_BREF)) != 0) 65 66 #define NTYPE(node) ((node)->u.base.type) 67 #define SET_NTYPE(node, ntype) (node)->u.base.type = (ntype) 68 69 #define NSTR(node) (&((node)->u.str)) 70 #define NCCLASS(node) (&((node)->u.cclass)) 71 #define NCTYPE(node) (&((node)->u.ctype)) 72 #define NBREF(node) (&((node)->u.bref)) 73 #define NQTFR(node) (&((node)->u.qtfr)) 74 #define NENCLOSE(node) (&((node)->u.enclose)) 75 #define NANCHOR(node) (&((node)->u.anchor)) 76 #define NCONS(node) (&((node)->u.cons)) 77 #define NCALL(node) (&((node)->u.call)) 78 79 #define NCAR(node) (NCONS(node)->car) 80 #define NCDR(node) (NCONS(node)->cdr) 81 82 83 84 #define ANCHOR_ANYCHAR_STAR_MASK (ANCHOR_ANYCHAR_STAR | ANCHOR_ANYCHAR_STAR_ML) 85 #define ANCHOR_END_BUF_MASK (ANCHOR_END_BUF | ANCHOR_SEMI_END_BUF) 86 87 #define ENCLOSE_MEMORY (1<<0) 88 #define ENCLOSE_OPTION (1<<1) 89 #define ENCLOSE_STOP_BACKTRACK (1<<2) 90 91 #define NODE_STR_MARGIN 16 92 #define NODE_STR_BUF_SIZE 24 /* sizeof(CClassNode) - sizeof(int)*4 */ 93 #define NODE_BACKREFS_SIZE 6 94 95 #define NSTR_RAW (1<<0) /* by backslashed number */ 96 #define NSTR_AMBIG (1<<1) 97 #define NSTR_DONT_GET_OPT_INFO (1<<2) 98 99 #define NSTRING_LEN(node) ((node)->u.str.end - (node)->u.str.s) 100 #define NSTRING_SET_RAW(node) (node)->u.str.flag |= NSTR_RAW 101 #define NSTRING_CLEAR_RAW(node) (node)->u.str.flag &= ~NSTR_RAW 102 #define NSTRING_SET_AMBIG(node) (node)->u.str.flag |= NSTR_AMBIG 103 #define NSTRING_SET_DONT_GET_OPT_INFO(node) \ 104 (node)->u.str.flag |= NSTR_DONT_GET_OPT_INFO 105 #define NSTRING_IS_RAW(node) (((node)->u.str.flag & NSTR_RAW) != 0) 106 #define NSTRING_IS_AMBIG(node) (((node)->u.str.flag & NSTR_AMBIG) != 0) 107 #define NSTRING_IS_DONT_GET_OPT_INFO(node) \ 108 (((node)->u.str.flag & NSTR_DONT_GET_OPT_INFO) != 0) 109 110 #define BACKREFS_P(br) \ 111 (IS_NOT_NULL((br)->back_dynamic) ? (br)->back_dynamic : (br)->back_static); 112 113 #define NQ_TARGET_ISNOT_EMPTY 0 114 #define NQ_TARGET_IS_EMPTY 1 115 #define NQ_TARGET_IS_EMPTY_MEM 2 116 #define NQ_TARGET_IS_EMPTY_REC 3 117 118 /* status bits */ 119 #define NST_MIN_FIXED (1<<0) 120 #define NST_MAX_FIXED (1<<1) 121 #define NST_CLEN_FIXED (1<<2) 122 #define NST_MARK1 (1<<3) 123 #define NST_MARK2 (1<<4) 124 #define NST_MEM_BACKREFED (1<<5) 125 #define NST_STOP_BT_SIMPLE_REPEAT (1<<6) 126 #define NST_RECURSION (1<<7) 127 #define NST_CALLED (1<<8) 128 #define NST_ADDR_FIXED (1<<9) 129 #define NST_NAMED_GROUP (1<<10) 130 #define NST_NAME_REF (1<<11) 131 #define NST_IN_REPEAT (1<<12) /* STK_REPEAT is nested in stack. */ 132 #define NST_NEST_LEVEL (1<<13) 133 #define NST_BY_NUMBER (1<<14) /* {n,m} */ 134 135 #define SET_ENCLOSE_STATUS(node,f) (node)->u.enclose.state |= (f) 136 #define CLEAR_ENCLOSE_STATUS(node,f) (node)->u.enclose.state &= ~(f) 137 138 #define IS_ENCLOSE_CALLED(en) (((en)->state & NST_CALLED) != 0) 139 #define IS_ENCLOSE_ADDR_FIXED(en) (((en)->state & NST_ADDR_FIXED) != 0) 140 #define IS_ENCLOSE_RECURSION(en) (((en)->state & NST_RECURSION) != 0) 141 #define IS_ENCLOSE_MARK1(en) (((en)->state & NST_MARK1) != 0) 142 #define IS_ENCLOSE_MARK2(en) (((en)->state & NST_MARK2) != 0) 143 #define IS_ENCLOSE_MIN_FIXED(en) (((en)->state & NST_MIN_FIXED) != 0) 144 #define IS_ENCLOSE_MAX_FIXED(en) (((en)->state & NST_MAX_FIXED) != 0) 145 #define IS_ENCLOSE_CLEN_FIXED(en) (((en)->state & NST_CLEN_FIXED) != 0) 146 #define IS_ENCLOSE_STOP_BT_SIMPLE_REPEAT(en) \ 147 (((en)->state & NST_STOP_BT_SIMPLE_REPEAT) != 0) 148 #define IS_ENCLOSE_NAMED_GROUP(en) (((en)->state & NST_NAMED_GROUP) != 0) 149 150 #define SET_CALL_RECURSION(node) (node)->u.call.state |= NST_RECURSION 151 #define IS_CALL_RECURSION(cn) (((cn)->state & NST_RECURSION) != 0) 152 #define IS_CALL_NAME_REF(cn) (((cn)->state & NST_NAME_REF) != 0) 153 #define IS_BACKREF_NAME_REF(bn) (((bn)->state & NST_NAME_REF) != 0) 154 #define IS_BACKREF_NEST_LEVEL(bn) (((bn)->state & NST_NEST_LEVEL) != 0) 155 #define IS_QUANTIFIER_IN_REPEAT(qn) (((qn)->state & NST_IN_REPEAT) != 0) 156 #define IS_QUANTIFIER_BY_NUMBER(qn) (((qn)->state & NST_BY_NUMBER) != 0) 157 158 #define CALLNODE_REFNUM_UNDEF -1 159 160 typedef struct { 161 NodeBase base; 162 UChar* s; 163 UChar* end; 164 unsigned int flag; 165 int capa; /* (allocated size - 1) or 0: use buf[] */ 166 UChar buf[NODE_STR_BUF_SIZE]; 167 } StrNode; 168 169 typedef struct { 170 NodeBase base; 171 int state; 172 struct _Node* target; 173 int lower; 174 int upper; 175 int greedy; 176 int target_empty_info; 177 struct _Node* head_exact; 178 struct _Node* next_head_exact; 179 int is_refered; /* include called node. don't eliminate even if {0} */ 180 #ifdef USE_COMBINATION_EXPLOSION_CHECK 181 int comb_exp_check_num; /* 1,2,3...: check, 0: no check */ 182 #endif 183 } QtfrNode; 184 185 typedef struct { 186 NodeBase base; 187 int state; 188 int type; 189 int regnum; 190 OnigOptionType option; 191 struct _Node* target; 192 AbsAddrType call_addr; 193 /* for multiple call reference */ 194 OnigDistance min_len; /* min length (byte) */ 195 OnigDistance max_len; /* max length (byte) */ 196 int char_len; /* character length */ 197 int opt_count; /* referenced count in optimize_node_left() */ 198 } EncloseNode; 199 200 #ifdef USE_SUBEXP_CALL 201 202 typedef struct { 203 int offset; 204 struct _Node* target; 205 } UnsetAddr; 206 207 typedef struct { 208 int num; 209 int alloc; 210 UnsetAddr* us; 211 } UnsetAddrList; 212 213 typedef struct { 214 NodeBase base; 215 int state; 216 int group_num; 217 UChar* name; 218 UChar* name_end; 219 struct _Node* target; /* EncloseNode : ENCLOSE_MEMORY */ 220 UnsetAddrList* unset_addr_list; 221 } CallNode; 222 223 #endif 224 225 typedef struct { 226 NodeBase base; 227 int state; 228 int back_num; 229 int back_static[NODE_BACKREFS_SIZE]; 230 int* back_dynamic; 231 int nest_level; 232 } BRefNode; 233 234 typedef struct { 235 NodeBase base; 236 int type; 237 struct _Node* target; 238 int char_len; 239 } AnchorNode; 240 241 typedef struct { 242 NodeBase base; 243 struct _Node* car; 244 struct _Node* cdr; 245 } ConsAltNode; 246 247 typedef struct { 248 NodeBase base; 249 int ctype; 250 int not; 251 } CtypeNode; 252 253 typedef struct _Node { 254 union { 255 NodeBase base; 256 StrNode str; 257 CClassNode cclass; 258 QtfrNode qtfr; 259 EncloseNode enclose; 260 BRefNode bref; 261 AnchorNode anchor; 262 ConsAltNode cons; 263 CtypeNode ctype; 264 #ifdef USE_SUBEXP_CALL 265 CallNode call; 266 #endif 267 } u; 268 } Node; 269 270 271 #define NULL_NODE ((Node* )0) 272 273 #define SCANENV_MEMNODES_SIZE 8 274 #define SCANENV_MEM_NODES(senv) \ 275 (IS_NOT_NULL((senv)->mem_nodes_dynamic) ? \ 276 (senv)->mem_nodes_dynamic : (senv)->mem_nodes_static) 277 278 typedef struct { 279 OnigOptionType option; 280 OnigCaseFoldType case_fold_flag; 281 OnigEncoding enc; 282 OnigSyntaxType* syntax; 283 BitStatusType capture_history; 284 BitStatusType bt_mem_start; 285 BitStatusType bt_mem_end; 286 BitStatusType backrefed_mem; 287 UChar* pattern; 288 UChar* pattern_end; 289 UChar* error; 290 UChar* error_end; 291 regex_t* reg; /* for reg->names only */ 292 int num_call; 293 #ifdef USE_SUBEXP_CALL 294 UnsetAddrList* unset_addr_list; 295 #endif 296 int num_mem; 297 #ifdef USE_NAMED_GROUP 298 int num_named; 299 #endif 300 int mem_alloc; 301 Node* mem_nodes_static[SCANENV_MEMNODES_SIZE]; 302 Node** mem_nodes_dynamic; 303 #ifdef USE_COMBINATION_EXPLOSION_CHECK 304 int num_comb_exp_check; 305 int comb_exp_max_regnum; 306 int curr_max_regnum; 307 int has_recursion; 308 #endif 309 } ScanEnv; 310 311 312 #define IS_SYNTAX_OP(syn, opm) (((syn)->op & (opm)) != 0) 313 #define IS_SYNTAX_OP2(syn, opm) (((syn)->op2 & (opm)) != 0) 314 #define IS_SYNTAX_BV(syn, bvm) (((syn)->behavior & (bvm)) != 0) 315 316 #ifdef USE_NAMED_GROUP 317 typedef struct { 318 int new_val; 319 } GroupNumRemap; 320 321 extern int onig_renumber_name_table P_((regex_t* reg, GroupNumRemap* map)); 322 #endif 323 324 extern int onig_strncmp P_((const UChar* s1, const UChar* s2, int n)); 325 extern void onig_strcpy P_((UChar* dest, const UChar* src, const UChar* end)); 326 extern void onig_scan_env_set_error_string P_((ScanEnv* env, int ecode, UChar* arg, UChar* arg_end)); 327 extern int onig_scan_unsigned_number P_((UChar** src, const UChar* end, OnigEncoding enc)); 328 extern void onig_reduce_nested_quantifier P_((Node* pnode, Node* cnode)); 329 extern void onig_node_conv_to_str_node P_((Node* node, int raw)); 330 extern int onig_node_str_cat P_((Node* node, const UChar* s, const UChar* end)); 331 extern int onig_node_str_set P_((Node* node, const UChar* s, const UChar* end)); 332 extern void onig_node_free P_((Node* node)); 333 extern Node* onig_node_new_enclose P_((int type)); 334 extern Node* onig_node_new_anchor P_((int type)); 335 extern Node* onig_node_new_str P_((const UChar* s, const UChar* end)); 336 extern Node* onig_node_new_list P_((Node* left, Node* right)); 337 extern Node* onig_node_list_add P_((Node* list, Node* x)); 338 extern Node* onig_node_new_alt P_((Node* left, Node* right)); 339 extern void onig_node_str_clear P_((Node* node)); 340 extern int onig_free_node_list P_((void)); 341 extern int onig_names_free P_((regex_t* reg)); 342 extern int onig_parse_make_tree P_((Node** root, const UChar* pattern, const UChar* end, regex_t* reg, ScanEnv* env)); 343 extern int onig_free_shared_cclass_table P_((void)); 344 345 #ifdef ONIG_DEBUG 346 #ifdef USE_NAMED_GROUP 347 extern int onig_print_names(FILE*, regex_t*); 348 #endif 349 #endif 350 351 #if (defined (__GNUC__) && __GNUC__ > 2 ) && !defined(DARWIN) && !defined(__hpux) && !defined(_AIX) 352 # define UNEXPECTED(condition) __builtin_expect(condition, 0) 353 #else 354 # define UNEXPECTED(condition) (condition) 355 #endif 356 357 #define SAFE_ENC_LEN(enc, p, end, res) do { \ 358 int __res = enclen(enc, p); \ 359 if (UNEXPECTED(p + __res > end)) __res = end - p; \ 360 res = __res; \ 361 } while(0); 362 363 #endif /* REGPARSE_H */ 364
