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//@beginlicenses@
//@license{chiba-tokyo}{}@
//@license{Grzegorz Jakacki}{2004}@
//
// Copyright (C) 1997-2001 Shigeru Chiba, Tokyo Institute of Technology.
//
// Permission to use, copy, distribute and modify this software and
// its documentation for any purpose is hereby granted without fee,
// provided that the above copyright notice appears in all copies and that
// both that copyright notice and this permission notice appear in
// supporting documentation.
//
// Shigeru Chiba makes no representations about the suitability of this
// software for any purpose. It is provided "as is" without express or
// implied warranty.
//
// -----------------------------------------------------------------
//
// Permission to use, copy, distribute and modify this software and its
// documentation for any purpose is hereby granted without fee, provided that
// the above copyright notice appears in all copies and that both that copyright
// notice and this permission notice appear in supporting documentation.
//
// Grzegorz Jakacki make(s) no representations about the suitability of this
// software for any purpose. It is provided "as is" without express or implied
// warranty.
//
// Copyright (C) 2004 Grzegorz Jakacki
//
//@endlicenses@
#include <opencxx/EncodingUtil.h>
#include <opencxx/Class.h>
#include <opencxx/Bind.h>
#include <opencxx/Environment.h>
#include <opencxx/TypeInfo.h>
namespace Opencxx
{
namespace EncodingUtil {
unsigned char*
GetTemplateArguments(unsigned char* name, int& len)
{
int m = name[0] - 0x80;
if(m <= 0){
len = name[1] - 0x80;
return &name[2];
}
else{
len = name[m + 1] - 0x80;
return &name[m + 2];
}
}
int
GetBaseNameIfTemplate(unsigned char* name, Environment*& e)
{
int m = name[0] - 0x80;
if(m <= 0)
return name[1] - 0x80 + 2;
Bind* b;
if(e != 0 && e->LookupType((char*)&name[1], m, b))
if(b != 0 && b->What() == Bind::isTemplateClass){
Class* c = b->ClassMetaobject();
if(c != 0){
e = c->GetEnvironment();
return m + (name[m + 1] - 0x80) + 2;
}
}
// the template name was not found.
e = 0;
return m + (name[m + 1] - 0x80) + 2;
}
// GetBaseName() returns "Foo" if ENCODE is "Q[2][1]X[3]Foo", for example.
// If an error occurs, the function returns 0.
char*
GetBaseName(char* encode, int& len, Environment*& env)
{
if(encode == 0){
len = 0;
return 0;
}
Environment* e = env;
unsigned char* p = (unsigned char*)encode;
if(*p == 'Q'){
int n = p[1] - 0x80;
p += 2;
while(n-- > 1){
int m = *p++;
if(m == 'T')
m = GetBaseNameIfTemplate(p, e);
else if(m < 0x80){ // error?
len = 0;
return 0;
}
else{ // class name
m -= 0x80;
if(m <= 0){ // if global scope (e.g. ::Foo)
if(e != 0)
e = e->GetBottom();
}
else
e = ResolveTypedefName(e, (char*)p, m);
}
p += m;
}
env = e;
}
if(*p == 'T'){ // template class
int m = p[1] - 0x80;
int n = p[m + 2] - 0x80;
len = m + n + 3;
return (char*)p;
}
else if(*p < 0x80){ // error?
len = 0;
return 0;
}
else{
len = *p - 0x80;
return (char*)p + 1;
}
}
Environment*
ResolveTypedefName(Environment* env, char* name, int len)
{
TypeInfo tinfo;
Bind* bind;
Class* c = 0;
if(env != 0)
if (env->LookupType(name, len, bind) && bind != 0)
switch(bind->What()){
case Bind::isClassName :
c = bind->ClassMetaobject();
break;
case Bind::isTypedefName :
bind->GetType(tinfo, env);
c = tinfo.ClassMetaobject();
/* if (c == 0) */
env = 0;
break;
default :
break;
}
else {
env = env->LookupNamespace(name, len);
/* env is 0 if name is an unknown typedef name or namespace.
*/
}
if(c != 0)
return c->GetEnvironment();
else
return env;
}
}
}
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