void* BufferManager::Allocate(size_type size, size_type alignment)
{
const auto offset = GetFinalOffset(static_cast<const void*>(buffer_ + cursor_), alignment);
if (cursor_ + offset + size > bufferSize_) return {};
void* result = static_cast<void*>(buffer_ + cursor_ + offset);
cursor_ += (size + offset);
return result;
}
/*
// Struct Value Operand
//
// Returns 0 for OK, or -1 for Fatal Error
*/
static int StructValueOperand( char *source, int CmdType, uint *pValue )
{
ASSIGN *pas;
STRUCT *pst;
char name[STRUCT_NAME_LEN];
char name2[STRUCT_NAME_LEN];
char *ext = 0;
int i;
for(i=0; i<STRUCT_NAME_LEN; i++)
{
name[i] = source[i];
if( name[i]=='.' || name[i]==0 )
break;
}
if( i==STRUCT_NAME_LEN )
return(-1);
if( name[i]=='.' )
{
name[i]=0;
strcpy(name2,source+i+1);
/*
// Look for a name extenion. For example, the "W2" on "MyStruct.MyField.W2"
*/
for(i=0; i<STRUCT_NAME_LEN; i++)
{
if( name2[i]=='.' || name2[i]==0 )
break;
}
if( i==STRUCT_NAME_LEN )
return(-1);
if( name2[i]=='.' )
{
name2[i]=0;
ext = name2+i+1;
}
}
else
name2[0]=0;
pas = AssignFind(name);
if( pas )
{
if( !strlen(name2) )
{
if( CmdType==SVO_SIZEOF )
*pValue = pas->TotalSize;
else
*pValue = 0;
return(0);
}
for( i=0; i<pas->Elements; i++ )
{
if( !stricmp(name2,pas->ElemName[i]) )
break;
}
if( i==pas->Elements )
return(-1);
if( CmdType==SVO_SIZEOF )
{
if(ext)
return( GetFinalSize( ext, pas->Size[i], pValue ) );
*pValue = pas->Size[i];
}
else
{
if(ext)
return( GetFinalOffset( ext, pas->Size[i], pas->Offset[i], pValue ) );
*pValue = pas->Offset[i];
}
return(0);
}
pst = StructFind(name);
if( pst )
{
if( !strlen(name2) )
{
if( CmdType==SVO_SIZEOF )
*pValue = pst->TotalSize;
else
*pValue = 0;
return(0);
}
for( i=0; i<pst->Elements; i++ )
{
if( !stricmp(name2,pst->ElemName[i]) )
break;
}
if( i==pst->Elements )
return(-1);
if( CmdType==SVO_SIZEOF )
{
if(ext)
return( GetFinalSize( ext, pst->Size[i], pValue ) );
*pValue = pst->Size[i];
}
else
{
if(ext)
return( GetFinalOffset( ext, pst->Size[i], pst->Offset[i], pValue ) );
*pValue = pst->Offset[i];
}
return(0);
}
return -1;
}
