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Code Issues Releases Wiki Activity

Added new reference mode for EventEmitter

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This commit is contained in:
Bryan Roe
2021-02-18 01:51:52 -08:00
parent b8e4ba48b4
commit da756d6b7f
6 changed files with 118 additions and 26 deletions
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114
microscript/ILibduktape_EventEmitter.c
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@@ -36,6 +36,13 @@ limitations under the License.
#define ILibDuktape_EventEmitter_ForwardTable "\xFF_EventEmitter_ForwardTable"
#define ILibDuktape_EventEmitter_EventTable "\xFF_EventEmitter_EventTable"
#define ILibDuktape_EventEmitter_CountTable "\xFF_EventEmitter_CountTable"
#define ILibDuktape_EventEmitter_References "\xFF_EventReferences"
#ifdef ILIBEVENTEMITTER_REFHOLD
int gEventEmitterReferenceHold = ILIBEVENTEMITTER_REFHOLD;
#else
int gEventEmitterReferenceHold = 0;
#endif
typedef struct ILibDuktape_EventEmitter_EmitStruct
{
@@ -418,6 +425,27 @@ duk_ret_t ILibDuktape_EventEmitter_on(duk_context *ctx)
duk_array_push(ctx, -2); // [object][table][array]
}
if (gEventEmitterReferenceHold != 0)
{
duk_prepare_method_call(ctx, -3, "eventNames"); // [object][table][array][eventNames][this]
duk_call_method(ctx, 0); // [object][table][array][names]
if (duk_get_length(ctx, -1) > 0)
{
duk_push_heap_stash(ctx); // [object][table][array][names][stash]
if (!duk_has_prop_string(ctx, -1, ILibDuktape_EventEmitter_References))
{
duk_push_object(ctx); // [object][table][array][names][stash][refs]
duk_put_prop_string(ctx, -2, ILibDuktape_EventEmitter_References); // [object][table][array][names][stash]
}
duk_get_prop_string(ctx, -1, ILibDuktape_EventEmitter_References); // [object][table][array][names][stash][refs]
duk_push_this(ctx); // [object][table][array][names][stash][refs][this]
duk_put_prop_string(ctx, -2, Duktape_GetStashKey(duk_get_heapptr(ctx, -1))); //ect][table][array][names][stash][refs]
duk_pop_2(ctx); // [object][table][array][names]
}
duk_pop(ctx); // [object][table][array]
}
if (!(propNameLen == 11 && strncmp(propName, "newListener", 11) == 0) && !(propNameLen == 12 && strncmp(propName, "newListener2", 12) == 0))
{
// Only emit 'newListener2' when the event itself isn't 'newListener' or 'newListener2'
@@ -600,13 +628,38 @@ duk_ret_t ILibDuktape_EventEmitter_listenerCount(duk_context *ctx)
duk_ret_t ILibDuktape_EventEmitter_eventNames(duk_context *ctx)
{
duk_size_t len;
duk_uarridx_t i;
duk_size_t count;
ILibDuktape_EventEmitter *emitter = ILibDuktape_EventEmitter_GetEmitter_fromThis(ctx);
duk_push_array(ctx); // [array]
duk_push_heapptr(ctx, emitter->table); // [array][table]
duk_enum(ctx, -1, DUK_ENUM_OWN_PROPERTIES_ONLY);// [array][table][enumerator]
while (duk_next(ctx, -1, 0)) // [array][table][enumerator][key]
while (duk_next(ctx, -1, 1)) // [array][table][enumerator][key][value]
{
duk_array_push(ctx, -4); // [array][table][enumerator]
count = 0;
if (strcmp(duk_get_string(ctx, -2), "~") != 0)
{
// We will only look at events that aren't the finalizer event
len = duk_get_length(ctx, -1);
for (i = 0; i < len; ++i)
{
duk_get_prop_index(ctx, -1, i); // [array][table][enumerator][key][value][obj]
duk_get_prop_string(ctx, -1, "func"); // [array][table][enumerator][key][value][obj][func]
if (Duktape_GetBooleanProperty(ctx, -1, ILibDuktape_EventEmitter_InfrastructureEvent, 0) == 0) { ++count; }
duk_pop_2(ctx); // [array][table][enumerator][key][value]
}
}
duk_pop(ctx); // [array][table][enumerator][key]
if (count > 0)
{
duk_array_push(ctx, -4); // [array][table][enumerator]
}
else
{
duk_pop(ctx); // [array][table][enumerator]
}
}
duk_pop_2(ctx); // [array]
return(1);
@@ -657,9 +710,26 @@ duk_ret_t ILibDuktape_EventEmitter_listeners_tableinit(duk_context *ctx)
int isAdd = Duktape_GetIntPropertyValue(ctx, -1, "add", 0);
const char *eventName = duk_require_string(ctx, 0);
duk_push_this(ctx);
duk_push_this(ctx); // [obj]
ILibDuktape_EventEmitter *emitter = (ILibDuktape_EventEmitter*)Duktape_GetBufferProperty(ctx, -1, ILibDuktape_EventEmitter_Data);
if (isAdd == 0 && gEventEmitterReferenceHold != 0)
{
duk_prepare_method_call(ctx, -1, "eventNames"); // [obj][eventNames][this]
duk_call_method(ctx, 0); // [obj][names]
if (duk_get_length(ctx, -1) == 0)
{
duk_push_heap_stash(ctx); // [obj][names][stash]
duk_get_prop_string(ctx, -1, ILibDuktape_EventEmitter_References); // [obj][names][stash][refs]
if (!duk_is_null_or_undefined(ctx, -1))
{
duk_del_prop_string(ctx, -1, Duktape_GetStashKey(duk_get_heapptr(ctx, -4)));
}
duk_pop_2(ctx); // [obj][names]
}
duk_pop(ctx); // [obj]
}
ILibSpinLock_Lock(&(emitter->listenerCountTableLock));
duk_push_global_object(ctx); // [g]
duk_get_prop_string(ctx, -1, "JSON"); // [g][JSON]
@@ -764,22 +834,6 @@ ILibDuktape_EventEmitter* ILibDuktape_EventEmitter_Create(duk_context *ctx)
ILibDuktape_CreateInstanceMethod(ctx, "emit", ILibDuktape_EventEmitter_emit, DUK_VARARGS);
ILibDuktape_CreateInstanceMethod(ctx, "emit_returnValue", ILibDuktape_EventEmitter_emitReturnValue, DUK_VARARGS);
duk_push_heap_stash(ctx);
if (duk_has_prop_string(ctx, -1, ILibDuktape_EventEmitter_GlobalListenerCount))
{
duk_get_prop_string(ctx, -1, ILibDuktape_EventEmitter_GlobalListenerCount);
retVal->totalListeners = (unsigned int *)Duktape_GetBuffer(ctx, -1, NULL);
duk_pop(ctx);
}
else
{
Duktape_PushBuffer(ctx, sizeof(unsigned int));
retVal->totalListeners = (unsigned int *)Duktape_GetBuffer(ctx, -1, NULL);
duk_put_prop_string(ctx, -2, ILibDuktape_EventEmitter_GlobalListenerCount);
*(retVal->totalListeners) = 0;
}
duk_pop(ctx);
ILibDuktape_EventEmitter_CreateEventEx(retVal, "~");
duk_push_c_function(ctx, ILibDuktape_EventEmitter_EmbeddedFinalizer, 1);
duk_set_finalizer(ctx, -2);
@@ -789,10 +843,12 @@ ILibDuktape_EventEmitter* ILibDuktape_EventEmitter_Create(duk_context *ctx)
duk_events_setup_on(ctx, -1, "newListener2", ILibDuktape_EventEmitter_listeners_tableinit); // [on][this][newListener][func]
duk_push_int(ctx, 1); duk_put_prop_string(ctx, -2, "add");
duk_push_true(ctx); duk_put_prop_string(ctx, -2, ILibDuktape_EventEmitter_InfrastructureEvent);
duk_pcall_method(ctx, 2); duk_pop(ctx); // ...
duk_events_setup_on(ctx, -1, "removeListener", ILibDuktape_EventEmitter_listeners_tableinit); // [on][this][removeListener][func]
duk_push_int(ctx, 0); duk_put_prop_string(ctx, -2, "add");
duk_push_true(ctx); duk_put_prop_string(ctx, -2, ILibDuktape_EventEmitter_InfrastructureEvent);
duk_pcall_method(ctx, 2); duk_pop(ctx); // ...
return retVal;
@@ -936,7 +992,7 @@ void ILibDuktape_EventEmitter_CreateEventEx(ILibDuktape_EventEmitter *emitter, c
duk_push_string(emitter->ctx, eventName); // [obj][prop][setFunc][name]
duk_put_prop_string(emitter->ctx, -2, "eventName"); // [obj][prop][setFunc]
duk_def_prop(emitter->ctx, -3, DUK_DEFPROP_FORCE | DUK_DEFPROP_HAVE_SETTER); // [obj]
duk_def_prop(emitter->ctx, -3, DUK_DEFPROP_SET_ENUMERABLE | DUK_DEFPROP_FORCE | DUK_DEFPROP_HAVE_SETTER); // [obj]
duk_pop(emitter->ctx); // ...
}
else
@@ -1077,12 +1133,30 @@ duk_ret_t ILibDuktape_EventEmitter_moderated(duk_context *ctx)
duk_put_prop_string(ctx, -2, "interval"); // [func]
return(1);
}
duk_ret_t ILibDuktape_EventEmitter_allProperties(duk_context *ctx)
{
const char *tmp;
duk_push_array(ctx); // [arr]
duk_dup(ctx, 0); // [arr][obj]
duk_enum(ctx, -1, DUK_ENUM_INCLUDE_NONENUMERABLE | DUK_ENUM_INCLUDE_HIDDEN );
while (duk_next(ctx, -1, 0)) // [arr][obj][enum][key]
{
tmp = duk_get_string(ctx, -1);
duk_push_string(ctx, tmp); // [arr][obj][enum][key][string]
duk_array_push(ctx, -5); // [arr][obj][enum][key]
duk_pop(ctx); // [arr][obj][enum]
}
duk_pop_2(ctx); // [arr]
return(1);
}
void ILibDuktape_EventEmitter_PUSH(duk_context *ctx, void *chain)
{
duk_push_object(ctx); // [emitter]
ILibDuktape_CreateInstanceMethod(ctx, "inherits", ILibDuktape_EventEmitter_Inherits, 1);
ILibDuktape_CreateInstanceMethod(ctx, "EventEmitter", ILibDuktape_EventEmitter_EventEmitter, DUK_VARARGS);
ILibDuktape_CreateInstanceMethod(ctx, "moderated", ILibDuktape_EventEmitter_moderated, DUK_VARARGS);
ILibDuktape_CreateInstanceMethod(ctx, "allProperties", ILibDuktape_EventEmitter_allProperties, 1);
}
void ILibDuktape_EventEmitter_Init(duk_context *ctx)
{