dd42cfb335cbbc394d3d7dd6b26992f4f71ee379
[swftools.git] / lib / as3 / import.c
1 /* import.c
2
3    Extension module for the rfxswf library.
4    Part of the swftools package.
5
6    Copyright (c) 2009 Matthias Kramm <kramm@quiss.org>
7  
8    This program is free software; you can redistribute it and/or modify
9    it under the terms of the GNU General Public License as published by
10    the Free Software Foundation; either version 2 of the License, or
11    (at your option) any later version.
12
13    This program is distributed in the hope that it will be useful,
14    but WITHOUT ANY WARRANTY; without even the implied warranty of
15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16    GNU General Public License for more details.
17
18    You should have received a copy of the GNU General Public License
19    along with this program; if not, write to the Free Software
20    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
21
22 #include "import.h"
23 #include "abc.h"
24 #include "registry.h"
25 #include "tokenizer.h"
26 #include "../os.h"
27
28 void as3_import_abc(char*filename)
29 {
30     TAG*tag = swf_InsertTag(0, ST_RAWABC);
31     memfile_t*file = memfile_open(filename);
32     tag->data = file->data;
33     tag->len = file->len;
34     abc_file_t*abc = swf_ReadABC(tag);
35     as3_import_code(abc);
36     swf_FreeABC(abc);
37     memfile_close(file);
38     free(tag);
39 }
40
41 void as3_import_swf(char*filename)
42 {
43     SWF* swf = swf_OpenSWF(filename);
44     if(!swf)
45         return;
46     TAG*tag = swf->firstTag;
47     while(tag) {
48         if(tag->id == ST_DOABC || tag->id == ST_RAWABC) {
49             abc_file_t*abc = swf_ReadABC(tag);
50             as3_import_code(abc);
51             swf_FreeABC(abc);
52         }
53         tag = tag->next;
54     }
55     swf_FreeTags(swf);
56     free(swf);
57 }
58
59 void as3_import_file(char*filename)
60 {
61     FILE*fi = fopen(filename, "rb");
62     if(!fi) return;
63     char head[3];
64     fread(head, 3, 1, fi);
65     fclose(fi);
66     if(!strncmp(head, "FWS", 3) ||
67        !strncmp(head, "CWS", 3)) {
68         as3_import_swf(filename);
69     } else {
70         as3_import_abc(filename);
71     }
72 }
73
74 static int compare_traits(const void*v1, const void*v2)
75 {
76     trait_t* x1 = *(trait_t**)v1;
77     trait_t* x2 = *(trait_t**)v2;
78     int i = strcmp(x1->name->ns->name, x2->name->ns->name);
79     if(i)
80         return i;
81     return strcmp(x1->name->name, x2->name->name);
82 }
83
84 static classinfo_t*resolve_class(char*what, multiname_t*n)
85 {
86     if(!n) return 0;
87     if(!n->name[0] || !strcmp(n->name, "void")) return 0;
88
89     classinfo_t*c = 0;
90     if(n->ns && n->ns->name) {
91         c = (classinfo_t*)registry_find(n->ns->name, n->name);
92     } else if(n->namespace_set) {
93         namespace_list_t*s = n->namespace_set->namespaces;
94         while(s) {
95             c = (classinfo_t*)registry_find(s->namespace->name, n->name);
96             if(c)
97                 break;
98             s = s->next;
99         }
100     }
101
102     if(!c) {
103         as3_warning("import: couldn't resolve %s %s", what, n->name);
104         return 0;
105     }
106     if(c->kind != INFOTYPE_CLASS)
107         as3_warning("import: %s %s resolves to something that's not a class", what, n->name);
108     return c;
109 }
110
111 void as3_import_code(void*_abc)
112 {
113     abc_file_t*abc = _abc;
114     int t;
115     for(t=0;t<abc->classes->num;t++) {
116         abc_class_t*cls = array_getvalue(abc->classes, t);
117         U8 access = cls->classname->ns->access;
118         if(access==ACCESS_PRIVATE ||
119            access==ACCESS_PACKAGEINTERNAL)
120             continue;
121         //if(!strncmp(cls->classname->ns->name, "__AS3", 5))
122         //    continue;
123
124         const char*package = strdup(cls->classname->ns->name);
125         const char*name = strdup(cls->classname->name);
126                 
127         multiname_list_t*i=cls->interfaces;
128         classinfo_t*c = classinfo_register(access, package, name, list_length(i));
129         c->flags|=FLAG_BUILTIN;
130
131         if(cls->flags & CLASS_FINAL)
132             c->flags |= FLAG_FINAL;
133         if(cls->flags & CLASS_INTERFACE)
134             c->flags |= FLAG_INTERFACE;
135         if(!(cls->flags & CLASS_SEALED))
136             c->flags |= FLAG_DYNAMIC;
137     }
138     
139     for(t=0;t<abc->classes->num;t++) {
140         abc_class_t*cls = array_getvalue(abc->classes, t);
141         const char*package = strdup(cls->classname->ns->name);
142         const char*name = strdup(cls->classname->name);
143         classinfo_t*c = (classinfo_t*)registry_find(package, name);
144         if(!c) continue;
145
146         int nr = 0;
147         multiname_list_t*i = cls->interfaces;
148         while(i) {
149             c->interfaces[nr++] = resolve_class("interface", i->multiname);
150             i = i->next;
151         }
152         c->superclass = resolve_class("superclass", cls->superclass);
153       
154         trait_list_t*l=0;
155         char is_static = 0;
156         l = cls->traits;
157         while(l) {
158             trait_t*trait = l->trait;
159             U8 access = trait->name->ns->access;
160             if(access==ACCESS_PRIVATE)
161                 goto cont;
162             const char*name = trait->name->name;
163             char* ns= ACCESS_NAMESPACE?strdup(trait->name->ns->name):"";
164             if(registry_findmember(c, ns, name, 0))
165                 goto cont;
166             name = strdup(name);
167
168             memberinfo_t*s = 0;
169             if(trait->kind == TRAIT_METHOD) {
170                 s = (memberinfo_t*)methodinfo_register_onclass(c, access, ns, name);
171                 s->return_type = resolve_class("return type", trait->method->return_type);
172             } else if(trait->kind == TRAIT_SLOT ||
173                       trait->kind == TRAIT_GETTER) {
174                 s = (memberinfo_t*)varinfo_register_onclass(c, access, ns, name);
175                 s->type = resolve_class("type", trait->type_name);
176             } else {
177                 goto cont;
178             }
179
180             s->flags = is_static?FLAG_STATIC:0;
181             s->flags |= FLAG_BUILTIN;
182             s->parent = c;
183
184             cont:
185             l = l->next;
186             if(!l && !is_static) {
187                 l = cls->static_traits;
188                 is_static = 1;
189             }
190         }
191     }
192
193 #   define IS_PUBLIC_MEMBER(trait) ((trait)->kind != TRAIT_CLASS && (trait)->name->ns->access != ACCESS_PRIVATE)
194
195     /* count public functions */
196     int num_methods=0;
197     for(t=0;t<abc->scripts->num;t++) {
198         trait_list_t*l = ((abc_script_t*)array_getvalue(abc->scripts, t))->traits;
199         for(;l;l=l->next) {
200             num_methods += IS_PUBLIC_MEMBER(l->trait);
201         }
202     }
203     trait_t**traits = (trait_t**)malloc(num_methods*sizeof(trait_t*));
204     num_methods=0;
205     for(t=0;t<abc->scripts->num;t++) {
206         trait_list_t*l = ((abc_script_t*)array_getvalue(abc->scripts, t))->traits;
207         for(;l;l=l->next) {
208             if(IS_PUBLIC_MEMBER(l->trait)) {
209                 traits[num_methods++] = l->trait;
210             }
211         }
212     }
213     qsort(traits, num_methods, sizeof(trait_t*), compare_traits);
214     for(t=0;t<num_methods;t++) {
215         trait_t*trait = traits[t];
216         if(IS_PUBLIC_MEMBER(trait)) {
217             U8 access = trait->name->ns->access;
218             const char*package = strdup(trait->name->ns->name);
219             const char*name = strdup(trait->name->name);
220             char np = 0;
221             memberinfo_t*m = 0;
222             if(trait->kind == TRAIT_METHOD) {
223                 m = (memberinfo_t*)methodinfo_register_global(access, package, name);
224                 m->return_type = resolve_class("return type", trait->method->return_type);
225             } else {
226                 m = (memberinfo_t*)varinfo_register_global(access, package, name);
227                 m->type = resolve_class("type", trait->type_name);
228             }
229             m->flags |= FLAG_BUILTIN;
230             m->parent = 0;
231         }
232     }
233 }