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#include "stdafx.h"
#include "PQueue.h"
#include "Fn.h"
#include "Array.h"
#include "Core/PQueue.h"
namespace storm {
Type *createPQueue(Str *name, ValueArray *params) {
if (params->count() != 1)
return null;
Value param = params->at(0);
if (param.ref)
return null;
return new (params) PQueueType(name, param.type);
}
static void copyPQ(void *mem, const PQueueBase *src) {
PQueueBase *o = new (Place(mem)) PQueueBase(*src);
runtime::setVTable(o);
}
static void createPQ(void *mem) {
PQueueType *t = (PQueueType *)runtime::typeOf((RootObject *)mem);
PQueueBase *o = new (Place(mem)) PQueueBase(t->param().type->handle());
runtime::setVTable(o);
}
static void createPQFn(void *mem, FnBase *compare) {
PQueueType *t = (PQueueType *)runtime::typeOf((RootObject *)mem);
PQueueBase *o = new (Place(mem)) PQueueBase(t->param().type->handle(), compare);
runtime::setVTable(o);
}
static void createPQArray(void *mem, ArrayBase *src) {
PQueueBase *o = new (Place(mem)) PQueueBase(src);
runtime::setVTable(o);
}
static void createPQArrayFn(void *mem, ArrayBase *src, FnBase *compare) {
PQueueBase *o = new (Place(mem)) PQueueBase(src, compare);
runtime::setVTable(o);
}
// Note: This allows altering the contents of the priority queue, which is fairly bad.
static const void *topPQ(PQueueBase *me) {
return me->topRaw();
}
static RootObject *topPQObj(PQueueBase *me) {
return *(RootObject **)me->topRaw();
}
static PQueueBase *pushPQ(PQueueBase *me, const void *elem) {
me->pushRaw(elem);
return me;
}
static PQueueBase *pushPQObj(PQueueBase *me, RootObject *obj) {
me->pushRaw(&obj);
return me;
}
PQueueType::PQueueType(Str *name, Type *contents) : Type(name, typeClass), contents(contents) {
params = new (engine) Array<Value>(param());
setSuper(PQueueBase::stormType(engine));
useSuperGcType();
}
Value PQueueType::param() const {
return Value(contents);
}
Bool PQueueType::loadAll() {
Engine &e = engine;
Value t = thisPtr(this);
Value ref = param().asRef();
Array<Value> *pParams = new (e) Array<Value>();
*pParams << Value(StormInfo<Bool>::type(e));
*pParams << param() << param();
Value f = Value(fnType(pParams));
Value a = wrapArray(param());
add(nativeFunction(e, Value(), Type::CTOR, valList(e, 2, t, t), address(©PQ))->makePure());
add(nativeFunction(e, Value(), Type::CTOR, valList(e, 2, t, f), address(&createPQFn))->makePure());
add(nativeFunction(e, Value(), Type::CTOR, valList(e, 3, t, a, f), address(&createPQArrayFn))->makePure());
if (param().isObject()) {
add(nativeFunction(e, Value(), S("push"), valList(e, 2, t, param()), address(&pushPQObj)));
add(nativeFunction(e, t, S("<<"), valList(e, 2, t, param()), address(&pushPQObj)));
add(nativeFunction(e, param(), S("top"), valList(e, 1, t), address(&topPQObj))->makePure());
} else {
// Note: Returning a reference from 'top' allows altering values in the PQueue, which could be bad.
add(nativeFunction(e, Value(), S("push"), valList(e, 2, t, ref), address(&pushPQ)));
add(nativeFunction(e, t, S("<<"), valList(e, 2, t, ref), address(&pushPQ)));
add(nativeFunction(e, ref, S("top"), valList(e, 1, t), address(&topPQ))->makePure());
}
if (param().type->handle().lessFn) {
addLess();
} else {
param().type->watchAdd(this);
}
return Type::loadAll();
}
void PQueueType::notifyAdded(NameSet *to, Named *added) {
if (added == param().type) {
Function *fn = as<Function>(added);
if (fn &&
*fn->name == S("<") &&
fn->result == Value(StormInfo<Bool>::type(engine)) &&
fn->params->count() == 2 &&
fn->params->at(0).type == to &&
fn->params->at(1).type == to) {
addLess();
to->watchRemove(this);
}
}
}
void PQueueType::addLess() {
Engine &e = engine;
Value t = thisPtr(this);
Value a = wrapArray(param());
add(nativeFunction(e, Value(), Type::CTOR, valList(e, 1, t), address(&createPQ))->makePure());
add(nativeFunction(e, Value(), Type::CTOR, valList(e, 2, t, a), address(&createPQArray))->makePure());
}
}
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