reactos/dll/win32/jscript/engine.h

   1 /*
   2  * Copyright 2008,2011 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 #pragma once
  20
  21 #define OP_LIST                            \
  22     X(add,        1, 0,0)                  \
  23     X(and,        1, 0,0)                  \
  24     X(array,      1, 0,0)                  \
  25     X(assign,     1, 0,0)                  \
  26     X(assign_call,1, ARG_UINT,   0)       \
  27     X(bool,       1, ARG_INT,    0)        \
  28     X(bneg,       1, 0,0)                  \
  29     X(call,       1, ARG_UINT,   ARG_UINT) \
  30     X(call_member,1, ARG_UINT,   ARG_UINT) \
  31     X(carray,     1, ARG_UINT,   0)        \
  32     X(case,       0, ARG_ADDR,   0)        \
  33     X(cnd_nz,     0, ARG_ADDR,   0)        \
  34     X(cnd_z,      0, ARG_ADDR,   0)        \
  35     X(delete,     1, 0,0)                  \
  36     X(delete_ident,1,ARG_BSTR,   0)        \
  37     X(div,        1, 0,0)                  \
  38     X(double,     1, ARG_DBL,    0)        \
  39     X(end_finally,1, 0,0)                  \
  40     X(eq,         1, 0,0)                  \
  41     X(eq2,        1, 0,0)                  \
  42     X(forin,      0, ARG_ADDR,   0)        \
  43     X(func,       1, ARG_UINT,   0)        \
  44     X(gt,         1, 0,0)                  \
  45     X(gteq,       1, 0,0)                  \
  46     X(ident,      1, ARG_BSTR,   0)        \
  47     X(identid,    1, ARG_BSTR,   ARG_INT)  \
  48     X(in,         1, 0,0)                  \
  49     X(instanceof, 1, 0,0)                  \
  50     X(int,        1, ARG_INT,    0)        \
  51     X(jmp,        0, ARG_ADDR,   0)        \
  52     X(jmp_z,      0, ARG_ADDR,   0)        \
  53     X(lshift,     1, 0,0)                  \
  54     X(lt,         1, 0,0)                  \
  55     X(lteq,       1, 0,0)                  \
  56     X(member,     1, ARG_BSTR,   0)        \
  57     X(memberid,   1, ARG_UINT,   0)        \
  58     X(minus,      1, 0,0)                  \
  59     X(mod,        1, 0,0)                  \
  60     X(mul,        1, 0,0)                  \
  61     X(neg,        1, 0,0)                  \
  62     X(neq,        1, 0,0)                  \
  63     X(neq2,       1, 0,0)                  \
  64     X(new,        1, ARG_UINT,   0)        \
  65     X(new_obj,    1, 0,0)                  \
  66     X(null,       1, 0,0)                  \
  67     X(obj_prop,   1, ARG_BSTR,   0)        \
  68     X(or,         1, 0,0)                  \
  69     X(pop,        1, ARG_UINT,   0)        \
  70     X(pop_except, 1, 0,0)                  \
  71     X(pop_scope,  1, 0,0)                  \
  72     X(postinc,    1, ARG_INT,    0)        \
  73     X(preinc,     1, ARG_INT,    0)        \
  74     X(push_except,1, ARG_ADDR,   ARG_BSTR) \
  75     X(push_scope, 1, 0,0)                  \
  76     X(regexp,     1, ARG_STR,    ARG_UINT) \
  77     X(rshift,     1, 0,0)                  \
  78     X(rshift2,    1, 0,0)                  \
  79     X(str,        1, ARG_STR,    0)        \
  80     X(this,       1, 0,0)                  \
  81     X(throw,      0, 0,0)                  \
  82     X(throw_ref,  0, ARG_UINT,   0)        \
  83     X(throw_type, 0, ARG_UINT,   ARG_STR)  \
  84     X(tonum,      1, 0,0)                  \
  85     X(typeof,     1, 0,0)                  \
  86     X(typeofid,   1, 0,0)                  \
  87     X(typeofident,1, 0,0)                  \
  88     X(refval,     1, 0,0)                  \
  89     X(ret,        0, 0,0)                  \
  90     X(setret,     1, 0,0)                  \
  91     X(sub,        1, 0,0)                  \
  92     X(undefined,  1, 0,0)                  \
  93     X(var_set,    1, ARG_BSTR,   0)        \
  94     X(void,       1, 0,0)                  \
  95     X(xor,        1, 0,0)
  96
  97 typedef enum {
  98 #define X(x,a,b,c) OP_##x,
  99 OP_LIST
 100 #undef X
 101     OP_LAST
 102 } jsop_t;
 103
 104 typedef union {
 105     BSTR bstr;
 106     LONG lng;
 107     jsstr_t *str;
 108     unsigned uint;
 109 } instr_arg_t;
 110
 111 typedef enum {
 112     ARG_NONE = 0,
 113     ARG_ADDR,
 114     ARG_BSTR,
 115     ARG_DBL,
 116     ARG_FUNC,
 117     ARG_INT,
 118     ARG_STR,
 119     ARG_UINT
 120 } instr_arg_type_t;
 121
 122 typedef struct {
 123     jsop_t op;
 124     union {
 125         instr_arg_t arg[2];
 126         double dbl;
 127     } u;
 128 } instr_t;
 129
 130 typedef struct _function_code_t {
 131     BSTR name;
 132     BSTR event_target;
 133     unsigned instr_off;
 134
 135     const WCHAR *source;
 136     unsigned source_len;
 137
 138     unsigned func_cnt;
 139     struct _function_code_t *funcs;
 140
 141     unsigned var_cnt;
 142     BSTR *variables;
 143
 144     unsigned param_cnt;
 145     BSTR *params;
 146 } function_code_t;
 147
 148 typedef struct _bytecode_t {
 149     LONG ref;
 150
 151     instr_t *instrs;
 152     heap_pool_t heap;
 153
 154     function_code_t global_code;
 155
 156     WCHAR *source;
 157
 158     BSTR *bstr_pool;
 159     unsigned bstr_pool_size;
 160     unsigned bstr_cnt;
 161
 162     jsstr_t **str_pool;
 163     unsigned str_pool_size;
 164     unsigned str_cnt;
 165
 166     struct _bytecode_t *next;
 167 } bytecode_t;
 168
 169 HRESULT compile_script(script_ctx_t*,const WCHAR*,const WCHAR*,const WCHAR*,BOOL,BOOL,bytecode_t**) DECLSPEC_HIDDEN;
 170 void release_bytecode(bytecode_t*) DECLSPEC_HIDDEN;
 171
 172 static inline void bytecode_addref(bytecode_t *code)
 173 {
 174     code->ref++;
 175 }
 176
 177 typedef struct _scope_chain_t {
 178     LONG ref;
 179     jsdisp_t *jsobj;
 180     IDispatch *obj;
 181     struct _scope_chain_t *next;
 182 } scope_chain_t;
 183
 184 HRESULT scope_push(scope_chain_t*,jsdisp_t*,IDispatch*,scope_chain_t**) DECLSPEC_HIDDEN;
 185 void scope_release(scope_chain_t*) DECLSPEC_HIDDEN;
 186
 187 static inline void scope_addref(scope_chain_t *scope)
 188 {
 189     scope->ref++;
 190 }
 191
 192 typedef struct _except_frame_t except_frame_t;
 193 struct _parser_ctx_t;
 194
 195 struct _exec_ctx_t {
 196     LONG ref;
 197
 198     struct _parser_ctx_t *parser;
 199     bytecode_t *code;
 200     script_ctx_t *script;
 201     scope_chain_t *scope_chain;
 202     jsdisp_t *var_disp;
 203     IDispatch *this_obj;
 204     function_code_t *func_code;
 205     BOOL is_global;
 206
 207     jsval_t *stack;
 208     unsigned stack_size;
 209     unsigned top;
 210     except_frame_t *except_frame;
 211     jsval_t ret;
 212
 213     unsigned ip;
 214 };
 215
 216 static inline void exec_addref(exec_ctx_t *ctx)
 217 {
 218     ctx->ref++;
 219 }
 220
 221 void exec_release(exec_ctx_t*) DECLSPEC_HIDDEN;
 222 HRESULT create_exec_ctx(script_ctx_t*,IDispatch*,jsdisp_t*,scope_chain_t*,BOOL,exec_ctx_t**) DECLSPEC_HIDDEN;
 223 HRESULT exec_source(exec_ctx_t*,bytecode_t*,function_code_t*,BOOL,jsval_t*) DECLSPEC_HIDDEN;
 224 HRESULT create_source_function(script_ctx_t*,bytecode_t*,function_code_t*,scope_chain_t*,jsdisp_t**) DECLSPEC_HIDDEN;