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#include "wvstreamsdebugger.h"
#include "wvlinklist.h"
static const int command_map_size = 16;
DeclareWvList(WvStreamsDebugger);
static WvStreamsDebuggerList *debuggers;
WvStreamsDebugger::CommandMap *WvStreamsDebugger::commands;
class WvStreamsDebuggerStaticInitCleanup
{
public:
WvStreamsDebuggerStaticInitCleanup()
{
WvStreamsDebugger::add_command("help",
0, &WvStreamsDebugger::help_run_cb, 0);
}
~WvStreamsDebuggerStaticInitCleanup()
{
assert(!debuggers || debuggers->isempty());
if (WvStreamsDebugger::commands)
{
WvStreamsDebugger::CommandMap::Iter i(*WvStreamsDebugger::commands);
for (i.rewind(); i.next(); )
delete i->data;
WvStreamsDebugger::commands->zap();
delete WvStreamsDebugger::commands;
WvStreamsDebugger::commands = NULL;
}
if (debuggers)
{
delete debuggers;
debuggers = NULL;
}
}
};
static WvStreamsDebuggerStaticInitCleanup ___;
void *WvStreamsDebugger::get_command_data(WvStringParm cmd, Command *command)
{
if (command == NULL)
{
Command **pcommand = commands->find(cmd);
if (!pcommand)
return NULL;
command = *pcommand;
}
void **pcd = (void **)command_data.find(cmd);
void *cd;
if (pcd == NULL)
{
// In case the command has been added since our constructor
// was executed...
if (!!command->init_cb)
cd = command->init_cb(cmd);
else
cd = NULL;
command_data.add(cmd, (char *)cd);
}
else
cd = *pcd;
return cd;
}
WvStreamsDebugger::WvStreamsDebugger() :
command_data(command_map_size)
{
if (!debuggers)
debuggers = new WvStreamsDebuggerList;
debuggers->append(this, false);
// Add command data for existing commands
CommandMap::Iter i(*commands);
for (i.rewind(); i.next(); )
(void)get_command_data(i->key, i->data);
}
WvStreamsDebugger::~WvStreamsDebugger()
{
// Remove command data
CommandDataMap::Iter i(command_data);
for (i.rewind(); i.next(); )
{
WvString cmd = i->key;
void *cd = i->data;
Command *command = (*commands)[cmd];
if (!!command->cleanup_cb)
command->cleanup_cb(cmd, cd);
}
command_data.zap();
debuggers->unlink(this);
}
WvString WvStreamsDebugger::run(WvStringParm cmd, WvStringList &args,
ResultCallback result_cb)
{
Command **pcommand = commands->find(cmd);
if (!pcommand)
return "No such command";
Command *command = *pcommand;
return command->run_cb(cmd, args, result_cb, get_command_data(cmd, command));
}
bool WvStreamsDebugger::add_command(WvStringParm cmd,
InitCallback init_cb,
RunCallback run_cb,
CleanupCallback cleanup_cb)
{
if (!commands)
commands = new CommandMap(command_map_size);
if (commands->exists(cmd))
return false;
Command *command = new Command(init_cb, run_cb, cleanup_cb);
commands->add(cmd, command);
return true;
}
bool WvStreamsDebugger::foreach(WvStringParm cmd, ForeachCallback foreach_cb)
{
Command **pcommand = commands->find(cmd);
if (!pcommand)
return false;
Command *command = *pcommand;
if (debuggers)
{
WvStreamsDebuggerList::Iter i(*debuggers);
for (i.rewind(); i.next(); )
{
void *cd = i->get_command_data(cmd, command);
foreach_cb(cmd, cd);
}
}
return true;
}
WvString WvStreamsDebugger::help_run_cb(WvStringParm cmd,
WvStringList &args,
ResultCallback result_cb, void *)
{
WvStringList cmd_list;
cmd_list.append("Commands availible:");
CommandMap::Iter i(*commands);
for (i.rewind(); i.next(); )
cmd_list.append(i->key);
result_cb(cmd, cmd_list);
return WvString::null;
}
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