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