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 {
 176     statement_t stat;
 177     const WCHAR *identifier;
 178     BOOL preserve;
 179     expression_t *dims;
 180 } redim_statement_t;
 181
 182 typedef struct _arg_decl_t {
 183     const WCHAR *name;
 184     BOOL by_ref;
 185     struct _arg_decl_t *next;
 186 } arg_decl_t;
 187
 188 typedef struct _function_decl_t {
 189     const WCHAR *name;
 190     function_type_t type;
 191     BOOL is_public;
 192     BOOL is_default;
 193     arg_decl_t *args;
 194     statement_t *body;
 195     struct _function_decl_t *next;
 196     struct _function_decl_t *next_prop_func;
 197 } function_decl_t;
 198
 199 typedef struct {
 200     statement_t stat;
 201     function_decl_t *func_decl;
 202 } function_statement_t;
 203
 204 typedef struct _class_decl_t {
 205     const WCHAR *name;
 206     function_decl_t *funcs;
 207     dim_decl_t *props;
 208     struct _class_decl_t *next;
 209 } class_decl_t;
 210
 211 typedef struct _elseif_decl_t {
 212     expression_t *expr;
 213     statement_t *stat;
 214     unsigned loc;
 215     struct _elseif_decl_t *next;
 216 } elseif_decl_t;
 217
 218 typedef struct {
 219     statement_t stat;
 220     expression_t *expr;
 221     statement_t *if_stat;
 222     elseif_decl_t *elseifs;
 223     statement_t *else_stat;
 224 } if_statement_t;
 225
 226 typedef struct {
 227     statement_t stat;
 228     expression_t *expr;
 229     statement_t *body;
 230 } while_statement_t;
 231
 232 typedef struct {
 233     statement_t stat;
 234     const WCHAR *identifier;
 235     expression_t *from_expr;
 236     expression_t *to_expr;
 237     expression_t *step_expr;
 238     statement_t *body;
 239 } forto_statement_t;
 240
 241 typedef struct {
 242     statement_t stat;
 243     const WCHAR *identifier;
 244     expression_t *group_expr;
 245     statement_t *body;
 246 } foreach_statement_t;
 247
 248 typedef struct {
 249     statement_t stat;
 250     BOOL resume_next;
 251 } onerror_statement_t;
 252
 253 typedef struct _const_decl_t {
 254     const WCHAR *name;
 255     expression_t *value_expr;
 256     struct _const_decl_t *next;
 257 } const_decl_t;
 258
 259 typedef struct {
 260     statement_t stat;
 261     const_decl_t *decls;
 262 } const_statement_t;
 263
 264 typedef struct _case_clausule_t {
 265     expression_t *expr;
 266     statement_t *stat;
 267     struct _case_clausule_t *next;
 268 } case_clausule_t;
 269
 270 typedef struct {
 271     statement_t stat;
 272     expression_t *expr;
 273     case_clausule_t *case_clausules;
 274 } select_statement_t;
 275
 276 typedef struct {
 277     statement_t stat;
 278     expression_t *expr;
 279     statement_t *body;
 280 } with_statement_t;
 281
 282 typedef struct {
 283     statement_t stat;
 284     expression_t *expr;
 285 } retval_statement_t;
 286
 287 typedef struct {
 288     const WCHAR *code;
 289     const WCHAR *ptr;
 290     const WCHAR *end;
 291
 292     BOOL option_explicit;
 293     BOOL is_html;
 294     HRESULT hres;
 295     int error_loc;
 296     LCID lcid;
 297
 298     int last_token;
 299     unsigned last_nl;
 300
 301     statement_t *stats;
 302     statement_t *stats_tail;
 303     class_decl_t *class_decls;
 304
 305     heap_pool_t heap;
 306 } parser_ctx_t;
 307
 308 HRESULT parse_script(parser_ctx_t*,const WCHAR*,const WCHAR*,DWORD) DECLSPEC_HIDDEN;
 309 void parser_release(parser_ctx_t*) DECLSPEC_HIDDEN;
 310 int parser_lex(void*,unsigned*,parser_ctx_t*) DECLSPEC_HIDDEN;
 311 void *parser_alloc(parser_ctx_t*,size_t) DECLSPEC_HIDDEN;