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Adding meta hooks.

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This is mainly an experiment to see if this makes sense. I'm not very
fond of the arguments being wrapped into a discriminating union, but I
like it better than other alternatives at least.

The new code is untested.
This commit is contained in:
Robin Sommer 2014-01-22 13:21:41 -08:00
parent b7dd8e4a78
commit ee75958951
5 changed files with 274 additions and 26 deletions
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79
src/plugin/Plugin.cc
View file

@ -9,11 +9,12 @@
#include "Component.h"
#include "../Desc.h"
#include "../Event.h"
using namespace plugin;
const char* hook_name(HookType h)
{
const char* plugin::hook_name(HookType h)
{
static const char* hook_names[int(NUM_HOOKS) + 1] = {
// Order must match that of HookType.
"LoadFile",
@ -21,6 +22,9 @@ const char* hook_name(HookType h)
"QueueEvent",
"DrainEvents",
"UpdateNetworkTime",
// MetaHooks
"MetaHookPre",
"MetaHookPost",
// End marker.
"<end>",
};
@ -55,6 +59,69 @@ BifItem::~BifItem()
{
}
void HookArgument::Describe(ODesc* d) const
{
switch ( type ) {
case BOOL:
d->Add(arg.bool_ ? "true" : "false");
break;
case DOUBLE:
d->Add(arg.double_);
break;
case EVENT:
if ( arg.event )
{
d->Add(arg.event->Handler()->Name());
d->Add("(");
describe_vals(arg.event->Args(), d);
d->Add(")");
}
else
d->Add("<null>");
break;
case FUNC:
if ( arg.func )
d->Add(arg.func->Name());
else
d->Add("<null>");
break;
case INT:
d->Add(arg.int_);
break;
case STRING:
d->Add(arg_string);
break;
case VAL:
if ( arg.val )
arg.val->Describe(d);
else
d->Add("<null>");
break;
case VAL_LIST:
if ( arg.vals )
{
d->Add("(");
describe_vals(arg.vals, d);
d->Add(")");
}
else
d->Add("<null>");
break;
case VOID:
d->Add("<void>");
break;
}
}
Plugin::Plugin()
{
dynamic = false;
@ -218,6 +285,14 @@ void Plugin::HookUpdateNetworkTime(double network_time)
{
}
void Plugin::MetaHookPre(HookType hook, const HookArgumentList& args)
{
}
void Plugin::MetaHookPost(HookType hook, const HookArgumentList& args, HookArgument result)
{
}
void Plugin::Describe(ODesc* d) const
{
d->Add("Plugin: ");