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#include <set>
#include "wvstreamsdebugger.h"
#include "wvlinklist.h"
using std::set;
static set<WvStreamsDebugger*> *debuggers;
WvStreamsDebugger::CommandMap *WvStreamsDebugger::commands;
class WvStreamsDebuggerStaticInitCleanup
{
public:
WvStreamsDebuggerStaticInitCleanup()
{
WvStreamsDebugger::add_command("help",
0, &WvStreamsDebugger::help_run_cb, 0);
}
~WvStreamsDebuggerStaticInitCleanup()
{
assert(!debuggers || debuggers->empty());
if (WvStreamsDebugger::commands)
{
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)
{
CommandMap::iterator it = commands->find(cmd);
if (it == commands->end())
return NULL;
command = &it->second;
}
void *cd;
CommandDataMap::iterator it = command_data.find(cmd);
if (it == command_data.end())
{
// 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[cmd] = cd;
}
else
cd = it->second;
return cd;
}
WvStreamsDebugger::WvStreamsDebugger()
{
if (!debuggers)
debuggers = new set<WvStreamsDebugger*>;
debuggers->insert(this);
// Add command data for existing commands
CommandMap::iterator it;
for (it = commands->begin(); it != commands->end(); ++it)
get_command_data(it->first, &it->second);
}
WvStreamsDebugger::~WvStreamsDebugger()
{
// Remove command data
CommandDataMap::iterator it;
for (it = command_data.begin(); it != command_data.end(); ++it)
{
CommandMap::iterator it2 = commands->find(it->first);
if (it2 != commands->end() && it2->second.cleanup_cb)
it2->second.cleanup_cb(it->first, it->second);
}
command_data.clear();
debuggers->erase(this);
}
WvString WvStreamsDebugger::run(WvStringParm cmd, WvStringList &args,
ResultCallback result_cb)
{
CommandMap::iterator it = commands->find(cmd);
if (it == commands->end())
return "No such command";
Command *command = &it->second;
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;
return commands->insert(
std::make_pair(cmd, Command(init_cb, run_cb, cleanup_cb))).second;
}
bool WvStreamsDebugger::foreach(WvStringParm cmd, ForeachCallback foreach_cb)
{
CommandMap::iterator it = commands->find(cmd);
if (it == commands->end())
return false;
if (debuggers)
{
set<WvStreamsDebugger*>::iterator it2;
for (it2 = debuggers->begin(); it2 != debuggers->end(); ++it2)
{
void *cd = (*it2)->get_command_data(cmd, &it->second);
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 available:");
CommandMap::iterator it;
for (it = commands->begin(); it != commands->end(); ++it)
cmd_list.append(it->first);
result_cb(cmd, cmd_list);
return WvString::null;
}
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