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_DATE,
  27     EXPR_DIV,
  28     EXPR_DOT,
  29     EXPR_DOUBLE,
  30     EXPR_EMPTY,
  31     EXPR_EQUAL,
  32     EXPR_EQV,
  33     EXPR_EXP,
  34     EXPR_GT,
  35     EXPR_GTEQ,
  36     EXPR_IDIV,
  37     EXPR_IMP,
  38     EXPR_INT,
  39     EXPR_IS,
  40     EXPR_LT,
  41     EXPR_LTEQ,
  42     EXPR_ME,
  43     EXPR_MEMBER,
  44     EXPR_MOD,
  45     EXPR_MUL,
  46     EXPR_NEG,
  47     EXPR_NEQUAL,
  48     EXPR_NEW,
  49     EXPR_NOARG, /* not a real expression */
  50     EXPR_NOT,
  51     EXPR_NOTHING,
  52     EXPR_NULL,
  53     EXPR_OR,
  54     EXPR_STRING,
  55     EXPR_SUB,
  56     EXPR_XOR
  57 } expression_type_t;
  58
  59 typedef struct _expression_t {
  60     expression_type_t type;
  61     struct _expression_t *next;
  62 } expression_t;
  63
  64 typedef struct {
  65     expression_t expr;
  66     VARIANT_BOOL value;
  67 } bool_expression_t;
  68
  69 typedef struct {
  70     expression_t expr;
  71     LONG value;
  72 } int_expression_t;
  73
  74 typedef struct {
  75     expression_t expr;
  76     DATE value;
  77 } date_expression_t;
  78
  79 typedef struct {
  80     expression_t expr;
  81     double value;
  82 } double_expression_t;
  83
  84 typedef struct {
  85     expression_t expr;
  86     const WCHAR *value;
  87 } string_expression_t;
  88
  89 typedef struct {
  90     expression_t expr;
  91     expression_t *subexpr;
  92 } unary_expression_t;
  93
  94 typedef struct {
  95     expression_t expr;
  96     expression_t *left;
  97     expression_t *right;
  98 } binary_expression_t;
  99
 100 typedef struct {
 101     expression_t expr;
 102     expression_t *obj_expr;
 103     const WCHAR *identifier;
 104 } member_expression_t;
 105
 106 typedef struct {
 107     expression_t expr;
 108     expression_t *call_expr;
 109     expression_t *args;
 110 } call_expression_t;
 111
 112 typedef enum {
 113     STAT_ASSIGN,
 114     STAT_CALL,
 115     STAT_CONST,
 116     STAT_DIM,
 117     STAT_DOUNTIL,
 118     STAT_DOWHILE,
 119     STAT_EXITDO,
 120     STAT_EXITFOR,
 121     STAT_EXITFUNC,
 122     STAT_EXITPROP,
 123     STAT_EXITSUB,
 124     STAT_FOREACH,
 125     STAT_FORTO,
 126     STAT_FUNC,
 127     STAT_IF,
 128     STAT_ONERROR,
 129     STAT_REDIM,
 130     STAT_SELECT,
 131     STAT_SET,
 132     STAT_STOP,
 133     STAT_UNTIL,
 134     STAT_WHILE,
 135     STAT_WHILELOOP,
 136     STAT_WITH,
 137     STAT_RETVAL
 138 } statement_type_t;
 139
 140 typedef struct _statement_t {
 141     statement_type_t type;
 142     unsigned loc;
 143     struct _statement_t *next;
 144 } statement_t;
 145
 146 typedef struct {
 147     statement_t stat;
 148     call_expression_t *expr;
 149 } call_statement_t;
 150
 151 typedef struct {
 152     statement_t stat;
 153     expression_t *left_expr;
 154     expression_t *value_expr;
 155 } assign_statement_t;
 156
 157 typedef struct _dim_list_t {
 158     unsigned val;
 159     struct _dim_list_t *next;
 160 } dim_list_t;
 161
 162 typedef struct _dim_decl_t {
 163     const WCHAR *name;
 164     BOOL is_array;
 165     BOOL is_public; /* Used only for class members. */
 166     dim_list_t *dims;
 167     struct _dim_decl_t *next;
 168 } dim_decl_t;
 169
 170 typedef struct _dim_statement_t {
 171     statement_t stat;
 172     dim_decl_t *dim_decls;
 173 } dim_statement_t;
 174
 175 typedef struct _redim_decl_t {
 176     const WCHAR *identifier;
 177     expression_t *dims;
 178     struct _redim_decl_t *next;
 179 } redim_decl_t;
 180
 181 typedef struct {
 182     statement_t stat;
 183     BOOL preserve;
 184     redim_decl_t *redim_decls;
 185 } redim_statement_t;
 186
 187 typedef struct _arg_decl_t {
 188     const WCHAR *name;
 189     BOOL by_ref;
 190     struct _arg_decl_t *next;
 191 } arg_decl_t;
 192
 193 typedef struct _function_decl_t {
 194     const WCHAR *name;
 195     function_type_t type;
 196     BOOL is_public;
 197     BOOL is_default;
 198     arg_decl_t *args;
 199     statement_t *body;
 200     struct _function_decl_t *next;
 201     struct _function_decl_t *next_prop_func;
 202 } function_decl_t;
 203
 204 typedef struct {
 205     statement_t stat;
 206     function_decl_t *func_decl;
 207 } function_statement_t;
 208
 209 typedef struct _class_decl_t {
 210     const WCHAR *name;
 211     function_decl_t *funcs;
 212     dim_decl_t *props;
 213     struct _class_decl_t *next;
 214 } class_decl_t;
 215
 216 typedef struct _elseif_decl_t {
 217     expression_t *expr;
 218     statement_t *stat;
 219     unsigned loc;
 220     struct _elseif_decl_t *next;
 221 } elseif_decl_t;
 222
 223 typedef struct {
 224     statement_t stat;
 225     expression_t *expr;
 226     statement_t *if_stat;
 227     elseif_decl_t *elseifs;
 228     statement_t *else_stat;
 229 } if_statement_t;
 230
 231 typedef struct {
 232     statement_t stat;
 233     expression_t *expr;
 234     statement_t *body;
 235 } while_statement_t;
 236
 237 typedef struct {
 238     statement_t stat;
 239     const WCHAR *identifier;
 240     expression_t *from_expr;
 241     expression_t *to_expr;
 242     expression_t *step_expr;
 243     statement_t *body;
 244 } forto_statement_t;
 245
 246 typedef struct {
 247     statement_t stat;
 248     const WCHAR *identifier;
 249     expression_t *group_expr;
 250     statement_t *body;
 251 } foreach_statement_t;
 252
 253 typedef struct {
 254     statement_t stat;
 255     BOOL resume_next;
 256 } onerror_statement_t;
 257
 258 typedef struct _const_decl_t {
 259     const WCHAR *name;
 260     expression_t *value_expr;
 261     struct _const_decl_t *next;
 262 } const_decl_t;
 263
 264 typedef struct {
 265     statement_t stat;
 266     const_decl_t *decls;
 267 } const_statement_t;
 268
 269 typedef struct _case_clausule_t {
 270     expression_t *expr;
 271     statement_t *stat;
 272     struct _case_clausule_t *next;
 273 } case_clausule_t;
 274
 275 typedef struct {
 276     statement_t stat;
 277     expression_t *expr;
 278     case_clausule_t *case_clausules;
 279 } select_statement_t;
 280
 281 typedef struct {
 282     statement_t stat;
 283     expression_t *expr;
 284     statement_t *body;
 285 } with_statement_t;
 286
 287 typedef struct {
 288     statement_t stat;
 289     expression_t *expr;
 290 } retval_statement_t;
 291
 292 typedef struct {
 293     const WCHAR *code;
 294     const WCHAR *ptr;
 295     const WCHAR *end;
 296
 297     BOOL option_explicit;
 298     BOOL is_html;
 299     HRESULT hres;
 300     int error_loc;
 301     LCID lcid;
 302
 303     int last_token;
 304     unsigned last_nl;
 305
 306     statement_t *stats;
 307     statement_t *stats_tail;
 308     class_decl_t *class_decls;
 309
 310     heap_pool_t heap;
 311 } parser_ctx_t;
 312
 313 HRESULT parse_script(parser_ctx_t*,const WCHAR*,const WCHAR*,DWORD);
 314 void parser_release(parser_ctx_t*);
 315 int parser_lex(void*,unsigned*,parser_ctx_t*);
 316 void *parser_alloc(parser_ctx_t*,size_t);