lib/as3/registry.c

   1 /* registry.c
   2
   3    Routines for compiling Flash2 AVM2 ABC Actionscript
   4
   5    Extension module for the rfxswf library.
   6    Part of the swftools package.
   7
   8    Copyright (c) 2008 Matthias Kramm <kramm@quiss.org>
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 2 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
  23
  24 #include <assert.h>
  25 #include "pool.h"
  26 #include "registry.h"
  27 #include "builtin.h"
  28
  29 static dict_t*classes=0;
  30
  31 // ----------------------- class signature ------------------------------
  32
  33 char classinfo_equals(classinfo_t*c1, classinfo_t*c2)
  34 {
  35     if(!!c1 != !!c2)
  36         return 0;
  37     /* notice: access right is *not* respected */
  38     if(!strcmp(c1->name, c2->name) &&
  39        !strcmp(c1->package, c2->package)) {
  40         return 1;
  41     }
  42     return 0;
  43 }
  44 static unsigned int classinfo_hash(classinfo_t*c)
  45 {
  46     unsigned int hash = 0;
  47     hash = crc32_add_string(hash, c->package);
  48     hash = crc32_add_string(hash, c->name);
  49     return hash;
  50 }
  51
  52 static void* dummy_clone(void*other) {return other;}
  53 static void dummy_destroy(classinfo_t*c) {}
  54
  55 type_t classinfo_type = {
  56     hash: (hash_func)classinfo_hash,
  57     equals: (equals_func)classinfo_equals,
  58     /* all signatures are static */
  59     dup: (dup_func)dummy_clone,
  60     free: (free_func)dummy_destroy,
  61 };
  62
  63 // ----------------------- function signature ------------------------------
  64
  65 static char memberinfo_equals(memberinfo_t*f1, memberinfo_t*f2)
  66 {
  67     return !strcmp(f1->name, f2->name);
  68 }
  69 static unsigned int memberinfo_hash(memberinfo_t*f)
  70 {
  71     return crc32_add_string(0, f->name);
  72 }
  73 type_t memberinfo_type = {
  74     hash: (hash_func)memberinfo_hash,
  75     equals: (equals_func)memberinfo_equals,
  76     /* all signatures are static */
  77     dup: (dup_func)dummy_clone,
  78     free: (free_func)dummy_destroy,
  79 };
  80
  81 // ------------------------- constructors --------------------------------
  82
  83 #define AVERAGE_NUMBER_OF_MEMBERS 8
  84 classinfo_t* classinfo_register(int access, char*package, char*name, int num_interfaces)
  85 {
  86     classinfo_t*c = rfx_calloc(sizeof(classinfo_t)+(sizeof(classinfo_t*)*(num_interfaces+1)));
  87     c->interfaces[0] = 0;
  88     c->access = access;
  89     c->package = package;
  90     c->name = name;
  91     dict_put(classes, c, c);
  92     dict_init(&c->members,AVERAGE_NUMBER_OF_MEMBERS);
  93     return c;
  94 }
  95
  96 /* function and class pointers get their own type class */
  97 static dict_t* functionobjects = 0;
  98 classinfo_t* registry_getfunctionclass(memberinfo_t*f) {
  99     if(!functionobjects) {
 100         functionobjects = dict_new2(&ptr_type);
 101     } else {
 102         classinfo_t*c = dict_lookup(functionobjects, f);
 103         if(c)
 104             return c;
 105     }
 106
 107     NEW(classinfo_t,c);
 108     c->access = ACCESS_PUBLIC;
 109     c->package = "";
 110     c->name = "Function";
 111     dict_init(&c->members,1);
 112     dict_put(&c->members, "call", f);
 113
 114     dict_put(functionobjects, f, c);
 115     return c;
 116 }
 117 static dict_t* classobjects = 0;
 118 classinfo_t* registry_getclassclass(classinfo_t*a) {
 119     if(!classobjects) {
 120         classobjects = dict_new2(&ptr_type);
 121     } else {
 122         classinfo_t*c = dict_lookup(classobjects, a);
 123         if(c)
 124             return c;
 125     }
 126
 127     NEW(classinfo_t,c);
 128     c->access = ACCESS_PUBLIC;
 129     c->package = "";
 130     c->name = "Class";
 131
 132     NEW(memberinfo_t,m);
 133     m->kind = MEMBER_SLOT;
 134     m->name = "prototype";
 135     m->type = a;
 136
 137     dict_init(&c->members,1);
 138     dict_put(&c->members, "prototype", m);
 139
 140     dict_put(classobjects, a, c);
 141     return c;
 142 }
 143
 144 memberinfo_t* memberinfo_register(classinfo_t*cls, const char*name, U8 kind)
 145 {
 146     NEW(memberinfo_t,m);
 147     m->kind = kind;
 148     m->name = strdup(name);
 149     dict_put(&cls->members, name, m);
 150     return m;
 151 }
 152
 153 // --------------- builtin classes (from builtin.c) ----------------------
 154
 155 void registry_init()
 156 {
 157     classes = builtin_getclasses();
 158 }
 159 classinfo_t* registry_safefindclass(const char*package, const char*name)
 160 {
 161     classinfo_t*c = registry_findclass(package, name);
 162     assert(c);
 163     return c;
 164 }
 165 classinfo_t* registry_findclass(const char*package, const char*name)
 166 {
 167     assert(classes);
 168     classinfo_t tmp;
 169     tmp.package = package;
 170     tmp.name = name;
 171     classinfo_t* c = (classinfo_t*)dict_lookup(classes, &tmp);
 172     /*if(c)
 173         printf("%s.%s->%08x (%s.%s)\n", package, name, c, c->package, c->name);*/
 174     return c;
 175 }
 176 memberinfo_t* registry_findmember(classinfo_t*cls, const char*name)
 177 {
 178     return (memberinfo_t*)dict_lookup(&cls->members, name);
 179 }
 180 void registry_fill_multiname(multiname_t*m, namespace_t*n, classinfo_t*c)
 181 {
 182     m->type = QNAME;
 183     m->ns = n;
 184     m->ns->access = c->access;
 185     m->ns->name = (char*)c->package;
 186     m->name = c->name;
 187     m->namespace_set = 0;
 188 }
 189 multiname_t* classinfo_to_multiname(classinfo_t*cls)
 190 {
 191     if(!cls)
 192         return 0;
 193     multiname_t*m=0;
 194     namespace_t*ns = namespace_new(cls->access, cls->package);
 195     return multiname_new(ns,cls->name);
 196 }
 197
 198 // ----------------------- builtin types ------------------------------
 199 classinfo_t* registry_getanytype() {return 0;}
 200
 201 char registry_isfunctionclass(classinfo_t*c) {
 202     return (c && c->package && c->name &&
 203             !strcmp(c->package, "") && !strcmp(c->name, "Function"));
 204 }
 205 char registry_isclassclass(classinfo_t*c) {
 206     return (c && c->package && c->name &&
 207             !strcmp(c->package, "") && !strcmp(c->name, "Class"));
 208 }
 209
 210 classinfo_t* registry_getobjectclass() {
 211     static classinfo_t*c = 0;
 212     if(!c) c = registry_safefindclass("", "Object");
 213     return c;
 214 }
 215 classinfo_t* registry_getstringclass() {
 216     static classinfo_t*c = 0;
 217     if(!c) c = registry_safefindclass("", "String");
 218     return c;
 219 }
 220 classinfo_t* registry_getintclass() {
 221     static classinfo_t*c = 0;
 222     if(!c) c = registry_safefindclass("", "int");
 223     return c;
 224 }
 225 classinfo_t* registry_getuintclass() {
 226     static classinfo_t*c = 0;
 227     if(!c) c = registry_safefindclass("", "uint");
 228     return c;
 229 }
 230 classinfo_t* registry_getbooleanclass() {
 231     static classinfo_t*c = 0;
 232     if(!c) c = registry_safefindclass("", "Boolean");
 233     return c;
 234 }
 235 classinfo_t* registry_getnumberclass() {
 236     static classinfo_t*c = 0;
 237     if(!c) c = registry_safefindclass("", "Number");
 238     return c;
 239 }
 240 classinfo_t* registry_getMovieClip() {
 241     static classinfo_t*c = 0;
 242     if(!c) c = registry_safefindclass("flash.display", "MovieClip");
 243     return c;
 244 }
 245
 246 // ----------------------- builtin dummy types -------------------------
 247 classinfo_t nullclass = {
 248     ACCESS_PACKAGE, 0, "", "null", 0, 0, 0,
 249 };
 250 classinfo_t* registry_getnullclass() {
 251     return &nullclass;
 252 }
 253