dlls/vbscript/parse.h

   1 /*
   2  * Copyright 2011 Jacek Caban for CodeWeavers
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 typedef enum {
  20     EXPR_ADD,
  21     EXPR_AND,
  22     EXPR_BOOL,
  23     EXPR_BRACKETS,
  24     EXPR_CALL,
  25     EXPR_CONCAT,
  26     EXPR_DIV,
  27     EXPR_DOT,
  28     EXPR_DOUBLE,
  29     EXPR_EMPTY,
  30     EXPR_EQUAL,
  31     EXPR_EQV,
  32     EXPR_EXP,
  33     EXPR_GT,
  34     EXPR_GTEQ,
  35     EXPR_IDIV,
  36     EXPR_IMP,
  37     EXPR_INT,
  38     EXPR_IS,
  39     EXPR_LT,
  40     EXPR_LTEQ,
  41     EXPR_ME,
  42     EXPR_MEMBER,
  43     EXPR_MOD,
  44     EXPR_MUL,
  45     EXPR_NEG,
  46     EXPR_NEQUAL,
  47     EXPR_NEW,
  48     EXPR_NOARG, /* not a real expression */
  49     EXPR_NOT,
  50     EXPR_NOTHING,
  51     EXPR_NULL,
  52     EXPR_OR,
  53     EXPR_STRING,
  54     EXPR_SUB,
  55     EXPR_XOR
  56 } expression_type_t;
  57
  58 typedef struct _expression_t {
  59     expression_type_t type;
  60     struct _expression_t *next;
  61 } expression_t;
  62
  63 typedef struct {
  64     expression_t expr;
  65     VARIANT_BOOL value;
  66 } bool_expression_t;
  67
  68 typedef struct {
  69     expression_t expr;
  70     LONG value;
  71 } int_expression_t;
  72
  73 typedef struct {
  74     expression_t expr;
  75     double value;
  76 } double_expression_t;
  77
  78 typedef struct {
  79     expression_t expr;
  80     const WCHAR *value;
  81 } string_expression_t;
  82
  83 typedef struct {
  84     expression_t expr;
  85     expression_t *subexpr;
  86 } unary_expression_t;
  87
  88 typedef struct {
  89     expression_t expr;
  90     expression_t *left;
  91     expression_t *right;
  92 } binary_expression_t;
  93
  94 typedef struct {
  95     expression_t expr;
  96     expression_t *obj_expr;
  97     const WCHAR *identifier;
  98 } member_expression_t;
  99
 100 typedef struct {
 101     expression_t expr;
 102     expression_t *call_expr;
 103     expression_t *args;
 104 } call_expression_t;
 105
 106 typedef enum {
 107     STAT_ASSIGN,
 108     STAT_CALL,
 109     STAT_CONST,
 110     STAT_DIM,
 111     STAT_DOUNTIL,
 112     STAT_DOWHILE,
 113     STAT_EXITDO,
 114     STAT_EXITFOR,
 115     STAT_EXITFUNC,
 116     STAT_EXITPROP,
 117     STAT_EXITSUB,
 118     STAT_FOREACH,
 119     STAT_FORTO,
 120     STAT_FUNC,
 121     STAT_IF,
 122     STAT_ONERROR,
 123     STAT_REDIM,
 124     STAT_SELECT,
 125     STAT_SET,
 126     STAT_STOP,
 127     STAT_UNTIL,
 128     STAT_WHILE,
 129     STAT_WHILELOOP,
 130     STAT_WITH,
 131     STAT_RETVAL
 132 } statement_type_t;
 133
 134 typedef struct _statement_t {
 135     statement_type_t type;
 136     unsigned loc;
 137     struct _statement_t *next;
 138 } statement_t;
 139
 140 typedef struct {
 141     statement_t stat;
 142     call_expression_t *expr;
 143 } call_statement_t;
 144
 145 typedef struct {
 146     statement_t stat;
 147     expression_t *left_expr;
 148     expression_t *value_expr;
 149 } assign_statement_t;
 150
 151 typedef struct _dim_list_t {
 152     unsigned val;
 153     struct _dim_list_t *next;
 154 } dim_list_t;
 155
 156 typedef struct _dim_decl_t {
 157     const WCHAR *name;
 158     BOOL is_array;
 159     BOOL is_public; /* Used only for class members. */
 160     dim_list_t *dims;
 161     struct _dim_decl_t *next;
 162 } dim_decl_t;
 163
 164 typedef struct _dim_statement_t {
 165     statement_t stat;
 166     dim_decl_t *dim_decls;
 167 } dim_statement_t;
 168
 169 typedef struct {
 170     statement_t stat;
 171     const WCHAR *identifier;
 172     BOOL preserve;
 173     expression_t *dims;
 174 } redim_statement_t;
 175
 176 typedef struct _arg_decl_t {
 177     const WCHAR *name;
 178     BOOL by_ref;
 179     struct _arg_decl_t *next;
 180 } arg_decl_t;
 181
 182 typedef struct _function_decl_t {
 183     const WCHAR *name;
 184     function_type_t type;
 185     BOOL is_public;
 186     BOOL is_default;
 187     arg_decl_t *args;
 188     statement_t *body;
 189     struct _function_decl_t *next;
 190     struct _function_decl_t *next_prop_func;
 191 } function_decl_t;
 192
 193 typedef struct {
 194     statement_t stat;
 195     function_decl_t *func_decl;
 196 } function_statement_t;
 197
 198 typedef struct _class_decl_t {
 199     const WCHAR *name;
 200     function_decl_t *funcs;
 201     dim_decl_t *props;
 202     struct _class_decl_t *next;
 203 } class_decl_t;
 204
 205 typedef struct _elseif_decl_t {
 206     expression_t *expr;
 207     statement_t *stat;
 208     unsigned loc;
 209     struct _elseif_decl_t *next;
 210 } elseif_decl_t;
 211
 212 typedef struct {
 213     statement_t stat;
 214     expression_t *expr;
 215     statement_t *if_stat;
 216     elseif_decl_t *elseifs;
 217     statement_t *else_stat;
 218 } if_statement_t;
 219
 220 typedef struct {
 221     statement_t stat;
 222     expression_t *expr;
 223     statement_t *body;
 224 } while_statement_t;
 225
 226 typedef struct {
 227     statement_t stat;
 228     const WCHAR *identifier;
 229     expression_t *from_expr;
 230     expression_t *to_expr;
 231     expression_t *step_expr;
 232     statement_t *body;
 233 } forto_statement_t;
 234
 235 typedef struct {
 236     statement_t stat;
 237     const WCHAR *identifier;
 238     expression_t *group_expr;
 239     statement_t *body;
 240 } foreach_statement_t;
 241
 242 typedef struct {
 243     statement_t stat;
 244     BOOL resume_next;
 245 } onerror_statement_t;
 246
 247 typedef struct _const_decl_t {
 248     const WCHAR *name;
 249     expression_t *value_expr;
 250     struct _const_decl_t *next;
 251 } const_decl_t;
 252
 253 typedef struct {
 254     statement_t stat;
 255     const_decl_t *decls;
 256 } const_statement_t;
 257
 258 typedef struct _case_clausule_t {
 259     expression_t *expr;
 260     statement_t *stat;
 261     struct _case_clausule_t *next;
 262 } case_clausule_t;
 263
 264 typedef struct {
 265     statement_t stat;
 266     expression_t *expr;
 267     case_clausule_t *case_clausules;
 268 } select_statement_t;
 269
 270 typedef struct {
 271     statement_t stat;
 272     expression_t *expr;
 273     statement_t *body;
 274 } with_statement_t;
 275
 276 typedef struct {
 277     statement_t stat;
 278     expression_t *expr;
 279 } retval_statement_t;
 280
 281 typedef struct {
 282     const WCHAR *code;
 283     const WCHAR *ptr;
 284     const WCHAR *end;
 285
 286     BOOL option_explicit;
 287     BOOL is_html;
 288     HRESULT hres;
 289     int error_loc;
 290
 291     int last_token;
 292     unsigned last_nl;
 293
 294     statement_t *stats;
 295     statement_t *stats_tail;
 296     class_decl_t *class_decls;
 297
 298     heap_pool_t heap;
 299 } parser_ctx_t;
 300
 301 HRESULT parse_script(parser_ctx_t*,const WCHAR*,const WCHAR*,DWORD) DECLSPEC_HIDDEN;
 302 void parser_release(parser_ctx_t*) DECLSPEC_HIDDEN;
 303 int parser_lex(void*,unsigned*,parser_ctx_t*) DECLSPEC_HIDDEN;
 304 void *parser_alloc(parser_ctx_t*,size_t) DECLSPEC_HIDDEN;