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#include "stdafx.h"
#include "Future.h"
#include "TemplateList.h"
#include "Engine.h"
#include "Exception.h"
#include "Core/Str.h"
#include "Core/Future.h"
namespace storm {
Type *createFuture(Str *name, ValueArray *params) {
if (params->count() != 1)
return null;
Value param = params->at(0);
if (param.ref)
return null;
return new (params) FutureType(name, param.type);
}
Bool isFuture(Value v) {
return as<FutureType>(v.type) != null;
}
Value unwrapFuture(Value v) {
if (FutureType *t = as<FutureType>(v.type))
return t->param();
else
return v;
}
Value wrapFuture(EnginePtr e, Value v) {
if (v.ref)
return v;
TemplateList *l = e.v.cppTemplate(FutureId);
NameSet *to = l->addTo();
assert(to, L"Too early to use 'wrapFuture'.");
Type *found = as<Type>(to->find(S("Future"), v, Scope()));
if (!found)
throw new (e.v) InternalError(S("Can not find the future type!"));
return Value(found);
}
static void CODECALL futureCreate(void *mem) {
FutureType *t = (FutureType *)runtime::typeOf((RootObject *)mem);
const Handle &h = runtime::typeHandle(t->param().type);
FutureBase *b = new (Place(mem)) FutureBase(h);
runtime::setVTable(b);
}
static void CODECALL futureCreateVoid(void *mem) {
new (Place(mem)) Future<void>();
}
static void CODECALL futureCopy(void *mem, FutureBase *src) {
FutureBase *b = new (Place(mem)) FutureBase(*src);
runtime::setVTable(b);
}
static void CODECALL postVoid(FutureBase *src) {
src->postRaw(null);
}
static void CODECALL resultVoid(FutureBase *src) {
src->resultRaw(null);
}
static void CODECALL postClass(FutureBase *src, Object *post) {
src->postRaw(&post);
}
static RootObject *CODECALL resultClass(FutureBase *src) {
RootObject *result;
src->resultRaw(&result);
return result;
}
FutureType::FutureType(Str *name, Type *contents)
: Type(name, new (name) Array<Value>(1, Value(contents)), typeClass),
contents(contents) {
setSuper(FutureBase::stormType(engine));
}
Value FutureType::param() const {
return Value(contents);
}
Bool FutureType::loadAll() {
Value param = this->param();
// Members differing between implementations.
if (param == Value()) {
loadVoid();
} else if (param.isObject()) {
loadClass();
} else {
loadValue();
}
return Type::loadAll();
}
void FutureType::loadVoid() {
Engine &e = engine;
Value t = thisPtr(this);
//Value cloneEnv = Value(CloneEnv::stormType(e));
add(nativeFunction(e, Value(), Type::CTOR, valList(e, 1, t), address(&futureCreateVoid)));
add(nativeFunction(e, Value(), Type::CTOR, valList(e, 2, t, t), address(&futureCopy)));
add(nativeFunction(e, Value(), S("post"), valList(e, 1, t), address(&postVoid)));
add(nativeFunction(e, Value(), S("result"), valList(e, 1, t), address(&resultVoid)));
}
void FutureType::loadClass() {
Engine &e = engine;
Value t = thisPtr(this);
//Value cloneEnv = Value(CloneEnv::stormType(e));
add(nativeFunction(e, Value(), Type::CTOR, valList(e, 1, t), address(&futureCreate)));
add(nativeFunction(e, Value(), Type::CTOR, valList(e, 2, t, t), address(&futureCopy)));
add(nativeFunction(e, Value(), S("post"), valList(e, 2, t, param()), address(&postClass)));
add(nativeFunction(e, param(), S("result"), valList(e, 1, t), address(&resultClass)));
}
void FutureType::loadValue() {
Engine &e = engine;
Value t = thisPtr(this);
//Value cloneEnv = Value(CloneEnv::stormType(e));
Value ref = param().asRef();
add(nativeFunction(e, Value(), Type::CTOR, valList(e, 1, t), address(&futureCreate)));
add(nativeFunction(e, Value(), Type::CTOR, valList(e, 2, t, t), address(&futureCopy)));
add(nativeFunction(e, Value(), S("post"), valList(e, 2, t, ref), address(&FutureBase::postRaw)));
// TODO: When 'param' is not a built in type, we can use FutureBase::resultRaw() directly,
// as their signatures match (at least on X86).
add(dynamicFunction(e, param(), S("result"), valList(e, 1, t), resultValue()));
}
code::Listing *FutureType::resultValue() {
using namespace code;
Value param = this->param();
Listing *l = new (this) Listing(true, param.desc(engine));
TypeDesc *ptr = engine.ptrDesc();
Var me = l->createParam(ptr);
Var data = l->createVar(l->root(), param.size());
*l << prolog();
*l << lea(ptrA, data);
*l << fnParam(ptr, me);
*l << fnParam(ptr, ptrA);
*l << fnCall(engine.ref(builtin::futureResult), false);
*l << fnRet(data);
return l;
}
}
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