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[ShareDaemon-CVS] core/src ParseClass.h,1.8,1.9
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From: <bo...@us...> - 2003-11-22 02:50:21
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Update of /cvsroot/sharedaemon/core/src
In directory sc8-pr-cvs1:/tmp/cvs-serv7741
Modified Files:
ParseClass.h
Log Message:
Added support for reading values to variables of different types as in the ed2k packet format string. I.e. you ca now use e.g. u32 a; Get(a,"msglen") where the format string is '<WORD>msglen'
Index: ParseClass.h
===================================================================
RCS file: /cvsroot/sharedaemon/core/src/ParseClass.h,v
retrieving revision 1.8
retrieving revision 1.9
diff -u -d -r1.8 -r1.9
--- ParseClass.h 20 Nov 2003 16:27:25 -0000 1.8
+++ ParseClass.h 22 Nov 2003 02:50:17 -0000 1.9
@@ -18,6 +18,9 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
+#ifndef PARSECLASS_H
+#define PARSECLASS_H
+
/*
* *** ATTENTION *** ATTENTION *** ATTENTION ***
*
@@ -34,6 +37,7 @@
#include "osdep.h" // For PRINTF_FORMAT
#include "util.h"
#include "mprintf.h"
+#include "parse-ed2k.h"
#include <cassert>
#include <cstdarg>
@@ -41,6 +45,36 @@
#include <cstdlib>
#include <new>
+/*
+#define STRUCT 0
+#define BITMAP 1
+#define TAG 9
+#define EMPTY 11
+#define NUM_TYPES 12
+*/
+
+/*
+ * Run Time Type Information.
+ *
+ * Special care must be taken on BYTE and CHAR as one cannot distinquished
+ * between them. Thus GetTypeID(BYTE) == GetTypeID(CHAR)!
+ */
+template <class T> int GetTypeID( T &t ) { generate=error+on+invalid+type; }
+inline int GetTypeID( char &t ) { return CHAR; }
+inline int GetTypeID( unsigned char &t ) { return BYTE; }
+inline int GetTypeID( signed char &t ) { return BYTE; }
+inline int GetTypeID( short &t ) { return WORD; }
+inline int GetTypeID( unsigned short &t ) { return WORD; }
+inline int GetTypeID( long &t ) { return DWORD; }
+inline int GetTypeID( unsigned long &t ) { return DWORD; }
+inline int GetTypeID( int &t ) { return DWORD; }
+inline int GetTypeID( unsigned int &t ) { return DWORD; }
+inline int GetTypeID( range &t ) { return RANGE; }
+inline int GetTypeID( ipport &t ) { return IPPORT; }
+inline int GetTypeID( hash &t ) { return HASH; }
+inline int GetTypeID( tag &t ) { return TAG; }
+inline int GetTypeID( bitmap &t ) { return BITMAP; }
+
#define ISSTRUCT(x) true
#define ISARRAY(x) true
@@ -190,6 +224,38 @@
size_t IncrementalReadNonArray(const u8 * buffer,size_t buffsize);
size_t IncrementalReadArray(const u8 * buffer,size_t buffsize);
+ template <class D,class S> void Cast(D & dst,const S & src) const {
+ fprintf(stderr,"%s:%s:%i: FATAL: Cannot cast types.\n"
+ ,__FILE__,__FUNCTION__,__LINE__
+ );
+ abort();
+ }
+
+ void Cast(unsigned long & dst,const u16 & src) const { dst=src; }
+ void Cast(unsigned int & dst,const u16 & src) const { dst=src; }
+ void Cast(unsigned short & dst,const u16 & src) const { dst=src; }
+
+ void Cast(unsigned long & dst,const u8 & src) const { dst=src; }
+ void Cast(unsigned int & dst,const u8 & src) const { dst=src; }
+ void Cast(unsigned short & dst,const u8 & src) const { dst=src; }
+
+/*
+inline int GetTypeID( char &t ) { return CHAR; }
+inline int GetTypeID( unsigned char &t ) { return BYTE; }
+inline int GetTypeID( signed char &t ) { return BYTE; }
+inline int GetTypeID( short &t ) { return WORD; }
+inline int GetTypeID( unsigned short &t ) { return WORD; }
+inline int GetTypeID( long &t ) { return DWORD; }
+inline int GetTypeID( unsigned long &t ) { return DWORD; }
+inline int GetTypeID( int &t ) { return DWORD; }
+inline int GetTypeID( unsigned int &t ) { return DWORD; }
+inline int GetTypeID( range &t ) { return RANGE; }
+inline int GetTypeID( ipport &t ) { return IPPORT; }
+inline int GetTypeID( hash &t ) { return HASH; }
+inline int GetTypeID( tag &t ) { return TAG; }
+inline int GetTypeID( bitmap &t ) { return BITMAP; }
+*/
+
/*
* Get
*
@@ -211,63 +277,59 @@
fprintf(
stderr,
"%s:%s:%i: expr=\"%s\" is invalid or index=%i "
- "is out of range\n",
- __FILE__,__FUNCTION__,__LINE__,expr,index
+ "is out of range\n"
+ ,__FILE__,__FUNCTION__,__LINE__,expr,index
);
abort();
}
-/*
- printf("*** MARK *** "); fflush(stdout);
-*/
-
if (!struc && !array) {
-/*
- printf(" !struc && !array "); fflush(stdout);
-*/
- var=*(T*)(data+size*index+ps->offset);
+ void * ptr=data+size*index+ps->offset;
+
+ if (GetTypeID(var) == ps->type_id) {
+ var=*(T*)ptr;
+ } else {
+ int tid=GetTypeID(var);
+
+ switch (ps->type_id) {
+ case WORD:
+ if (tid==DWORD) {
+ Cast(var,*(u16*)ptr);
+ return;
+ }
+ break;
+ case BYTE:
+ if (tid==DWORD || tid==WORD) {
+ Cast(var,*(u8 *)ptr);
+ return;
+ }
+ break;
+ default:
+ /* nothing to do here */
+ break;
+ }
+
+ fprintf(stderr,
+ "%s:%s:%i: FATAL: Type doesn "
+ "not match. %s was expected "
+ "but %s was given\n"
+ ,__FILE__,__FUNCTION__,__LINE__
+ ,::type[ps->type_id].type_name
+ ,tid>=0
+ ?::type[tid].type_name
+ :"<special>"
+ );
+ abort();
+ }
} else {
-/*
- printf("!(!struc && !array) "); fflush(stdout);
-*/
ParseClass * PC=*(ParseClass**)
(data+size*(index+1)-sizeof(ParseClass*));
-/*
- printf("PC=%p, ",reinterpret_cast<void*>(PC));
- fflush(stdout);
-*/
if (struc) {
-/*
- printf("struct\n");
- printf(
- ">>PC[ps->referer_id]."
- "Get(var,next_index,subexpr)\n"
- );
-*/
PC[ps->referer_id].Get(var,next_index,subexpr);
-/*
- printf(
- "<<PC[ps->referer_id]."
- "Get(var,next_index,subexpr)\n"
- );
-*/
} else {
-/*
- printf("!struct\n");
- printf(
- "PC->data=%p, PC->size=%i, "
- "next_index=%i, PC->nume=%i\n"
- ,PC->data,PC->size,
- next_index,PC->nume
- );
-*/
var=*(T*)(PC->data+PC->size*next_index);
}
}
-
-/*
- printf("*** MARK 2 *** "); fflush(stdout);
-*/
}
/*
@@ -433,3 +495,5 @@
Set(var,0,expr);
}
};
+
+#endif // #ifndef PARSECLASS_H
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