findmember now recursively scans superclasses, memberinfo now has a parent
[swftools.git] / 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     m->parent = cls;
123     dict_put(&cls->members, name, m);
124     return m;
125 }
126
127 // --------------- builtin classes (from builtin.c) ----------------------
128
129 void registry_init()
130 {
131     classes = builtin_getclasses();
132 }
133 classinfo_t* registry_safefindclass(const char*package, const char*name)
134 {
135     classinfo_t*c = registry_findclass(package, name);
136     assert(c);
137     return c;
138 }
139 classinfo_t* registry_findclass(const char*package, const char*name)
140 {
141     assert(classes);
142     classinfo_t tmp;
143     tmp.package = package;
144     tmp.name = name;
145     classinfo_t* c = (classinfo_t*)dict_lookup(classes, &tmp);
146     /*if(c)
147         printf("%s.%s->%08x (%s.%s)\n", package, name, c, c->package, c->name);*/
148     return c;
149 }
150 memberinfo_t* registry_findmember(classinfo_t*cls, const char*name, char recursive)
151 {
152     if(!recursive) {
153         return (memberinfo_t*)dict_lookup(&cls->members, name);
154     }
155     /* look at classes directly extended by this class */
156     memberinfo_t*m = 0;
157     classinfo_t*s = cls;
158     while(s) {
159         m = (memberinfo_t*)dict_lookup(&s->members, name);
160         if(m) return m;
161         s = s->superclass;
162     }
163     /* look at interfaces, and parent interfaces */
164     int t=0;
165     while(cls->interfaces[t]) {
166         classinfo_t*s = cls->interfaces[t];
167         while(s) {
168             m = (memberinfo_t*)dict_lookup(&s->members, name);
169             if(m) return m;
170             s = s->superclass;
171         }
172     }
173     return 0;
174
175 }
176 void registry_fill_multiname(multiname_t*m, namespace_t*n, classinfo_t*c)
177 {
178     m->type = QNAME;
179     m->ns = n;
180     m->ns->access = c->access;
181     m->ns->name = (char*)c->package;
182     m->name = c->name;
183     m->namespace_set = 0;
184 }
185 multiname_t* classinfo_to_multiname(classinfo_t*cls)
186 {
187     if(!cls)
188         return 0;
189     multiname_t*m=0;
190     namespace_t*ns = namespace_new(cls->access, cls->package);
191     return multiname_new(ns,cls->name);
192 }
193
194 // ----------------------- memberinfo methods ------------------------------
195
196 /* function and class pointers get their own type class */
197 static dict_t* functionobjects = 0;
198 classinfo_t* memberinfo_asclass(memberinfo_t*f) {
199     if(!functionobjects) {
200         functionobjects = dict_new2(&ptr_type);
201     } else {
202         classinfo_t*c = dict_lookup(functionobjects, f);
203         if(c)
204             return c;
205     }
206
207     NEW(classinfo_t,c);
208     c->access = ACCESS_PUBLIC;
209     c->package = "";
210     c->name = "Function";
211     
212     dict_init(&c->members,1);
213     c->function = f;
214
215     dict_put(functionobjects, f, c);
216     return c;
217 }
218
219 classinfo_t* memberinfo_gettype(memberinfo_t*f)
220 {
221     if(f) {
222        if(f->kind == MEMBER_METHOD) {
223            return memberinfo_asclass(f);
224        } else {
225            return f->type;
226        }
227     } else {
228        return registry_getanytype();
229     }
230 }
231 // ----------------------- builtin types ------------------------------
232 classinfo_t* registry_getanytype() {return 0;}
233
234 char registry_isfunctionclass(classinfo_t*c) {
235     return (c && c->package && c->name && 
236             !strcmp(c->package, "") && !strcmp(c->name, "Function"));
237 }
238 char registry_isclassclass(classinfo_t*c) {
239     return (c && c->package && c->name && 
240             !strcmp(c->package, "") && !strcmp(c->name, "Class"));
241 }
242
243 classinfo_t* registry_getobjectclass() {
244     static classinfo_t*c = 0;
245     if(!c) c = registry_safefindclass("", "Object");
246     return c;
247 }
248 classinfo_t* registry_getstringclass() {
249     static classinfo_t*c = 0;
250     if(!c) c = registry_safefindclass("", "String");
251     return c;
252 }
253 classinfo_t* registry_getarrayclass() {
254     static classinfo_t*c = 0;
255     if(!c) c = registry_safefindclass("", "Array");
256     return c;
257 }
258 classinfo_t* registry_getintclass() {
259     static classinfo_t*c = 0;
260     if(!c) c = registry_safefindclass("", "int");
261     return c;
262 }
263 classinfo_t* registry_getuintclass() {
264     static classinfo_t*c = 0;
265     if(!c) c = registry_safefindclass("", "uint");
266     return c;
267 }
268 classinfo_t* registry_getbooleanclass() {
269     static classinfo_t*c = 0;
270     if(!c) c = registry_safefindclass("", "Boolean");
271     return c;
272 }
273 classinfo_t* registry_getnumberclass() {
274     static classinfo_t*c = 0;
275     if(!c) c = registry_safefindclass("", "Number");
276     return c;
277 }
278 classinfo_t* registry_getMovieClip() {
279     static classinfo_t*c = 0;
280     if(!c) c = registry_safefindclass("flash.display", "MovieClip");
281     return c;
282 }
283
284 // ----------------------- builtin dummy types -------------------------
285 classinfo_t nullclass = {
286     ACCESS_PACKAGE, 0, "", "null", 0, 0, 0,
287 };
288 classinfo_t* registry_getnullclass() {
289     return &nullclass;
290 }
291