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 static dict_t* classobjects = 0;
  97 classinfo_t* registry_getclassclass(classinfo_t*a) {
  98     if(!classobjects) {
  99         classobjects = dict_new2(&ptr_type);
 100     } else {
 101         classinfo_t*c = dict_lookup(classobjects, a);
 102         if(c)
 103             return c;
 104     }
 105
 106     NEW(classinfo_t,c);
 107     c->access = ACCESS_PUBLIC;
 108     c->package = "";
 109     c->name = "Class";
 110     dict_init(&c->members,1);
 111     c->cls = a;
 112
 113     dict_put(classobjects, a, c);
 114     return c;
 115 }
 116
 117 memberinfo_t* memberinfo_register(classinfo_t*cls, const char*name, U8 kind)
 118 {
 119     NEW(memberinfo_t,m);
 120     m->kind = kind;
 121     m->name = strdup(name);
 122     dict_put(&cls->members, name, m);
 123     return m;
 124 }
 125
 126 // --------------- builtin classes (from builtin.c) ----------------------
 127
 128 void registry_init()
 129 {
 130     classes = builtin_getclasses();
 131 }
 132 classinfo_t* registry_safefindclass(const char*package, const char*name)
 133 {
 134     classinfo_t*c = registry_findclass(package, name);
 135     assert(c);
 136     return c;
 137 }
 138 classinfo_t* registry_findclass(const char*package, const char*name)
 139 {
 140     assert(classes);
 141     classinfo_t tmp;
 142     tmp.package = package;
 143     tmp.name = name;
 144     classinfo_t* c = (classinfo_t*)dict_lookup(classes, &tmp);
 145     /*if(c)
 146         printf("%s.%s->%08x (%s.%s)\n", package, name, c, c->package, c->name);*/
 147     return c;
 148 }
 149 memberinfo_t* registry_findmember(classinfo_t*cls, const char*name)
 150 {
 151     return (memberinfo_t*)dict_lookup(&cls->members, name);
 152 }
 153 void registry_fill_multiname(multiname_t*m, namespace_t*n, classinfo_t*c)
 154 {
 155     m->type = QNAME;
 156     m->ns = n;
 157     m->ns->access = c->access;
 158     m->ns->name = (char*)c->package;
 159     m->name = c->name;
 160     m->namespace_set = 0;
 161 }
 162 multiname_t* classinfo_to_multiname(classinfo_t*cls)
 163 {
 164     if(!cls)
 165         return 0;
 166     multiname_t*m=0;
 167     namespace_t*ns = namespace_new(cls->access, cls->package);
 168     return multiname_new(ns,cls->name);
 169 }
 170
 171 // ----------------------- memberinfo methods ------------------------------
 172
 173 /* function and class pointers get their own type class */
 174 static dict_t* functionobjects = 0;
 175 classinfo_t* memberinfo_asclass(memberinfo_t*f) {
 176     if(!functionobjects) {
 177         functionobjects = dict_new2(&ptr_type);
 178     } else {
 179         classinfo_t*c = dict_lookup(functionobjects, f);
 180         if(c)
 181             return c;
 182     }
 183
 184     NEW(classinfo_t,c);
 185     c->access = ACCESS_PUBLIC;
 186     c->package = "";
 187     c->name = "Function";
 188
 189     dict_init(&c->members,1);
 190     c->function = f;
 191
 192     dict_put(functionobjects, f, c);
 193     return c;
 194 }
 195
 196 classinfo_t* memberinfo_gettype(memberinfo_t*f)
 197 {
 198     if(f) {
 199        if(f->kind == MEMBER_METHOD) {
 200            return memberinfo_asclass(f);
 201        } else {
 202            return f->type;
 203        }
 204     } else {
 205        return registry_getanytype();
 206     }
 207 }
 208 // ----------------------- builtin types ------------------------------
 209 classinfo_t* registry_getanytype() {return 0;}
 210
 211 char registry_isfunctionclass(classinfo_t*c) {
 212     return (c && c->package && c->name &&
 213             !strcmp(c->package, "") && !strcmp(c->name, "Function"));
 214 }
 215 char registry_isclassclass(classinfo_t*c) {
 216     return (c && c->package && c->name &&
 217             !strcmp(c->package, "") && !strcmp(c->name, "Class"));
 218 }
 219
 220 classinfo_t* registry_getobjectclass() {
 221     static classinfo_t*c = 0;
 222     if(!c) c = registry_safefindclass("", "Object");
 223     return c;
 224 }
 225 classinfo_t* registry_getstringclass() {
 226     static classinfo_t*c = 0;
 227     if(!c) c = registry_safefindclass("", "String");
 228     return c;
 229 }
 230 classinfo_t* registry_getintclass() {
 231     static classinfo_t*c = 0;
 232     if(!c) c = registry_safefindclass("", "int");
 233     return c;
 234 }
 235 classinfo_t* registry_getuintclass() {
 236     static classinfo_t*c = 0;
 237     if(!c) c = registry_safefindclass("", "uint");
 238     return c;
 239 }
 240 classinfo_t* registry_getbooleanclass() {
 241     static classinfo_t*c = 0;
 242     if(!c) c = registry_safefindclass("", "Boolean");
 243     return c;
 244 }
 245 classinfo_t* registry_getnumberclass() {
 246     static classinfo_t*c = 0;
 247     if(!c) c = registry_safefindclass("", "Number");
 248     return c;
 249 }
 250 classinfo_t* registry_getMovieClip() {
 251     static classinfo_t*c = 0;
 252     if(!c) c = registry_safefindclass("flash.display", "MovieClip");
 253     return c;
 254 }
 255
 256 // ----------------------- builtin dummy types -------------------------
 257 classinfo_t nullclass = {
 258     ACCESS_PACKAGE, 0, "", "null", 0, 0, 0,
 259 };
 260 classinfo_t* registry_getnullclass() {
 261     return &nullclass;
 262 }
 263