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#include "stdafx.h"
#include "Join.h"
#include "Array.h"
#include "Fn.h"
#include "Compiler/Function.h"
#include "Compiler/Exception.h"
#include "Compiler/Engine.h"
#include "Code/Listing.h"
namespace storm {
Join::Join(ArrayBase *array, Str *separator)
: array(array), separator(separator), lambda(null), thunk(null) {}
Join::Join(ArrayBase *array, Str *separator, FnBase *lambda, void *lambdaCall, os::CallThunk thunk)
: array(array), separator(separator), lambda(lambda), lambdaCall(lambdaCall), thunk(thunk) {}
void Join::toS(StrBuf *to) const {
if (lambda && thunk) {
for (Nat i = 0; i < array->count(); i++) {
if (i > 0 && separator)
*to << separator;
void *params[2] = { (void *)&lambda, array->getRaw(i) };
Str *result = null;
(*thunk)(lambdaCall, true, params, null, &result);
*to << result;
}
} else {
const Handle &handle = array->handle;
for (Nat i = 0; i < array->count(); i++) {
if (i > 0 && separator)
*to << separator;
(*handle.toSFn)(array->getRaw(i), to);
}
}
}
Join *CODECALL joinBase(ArrayBase *array) {
return new (array) Join(array, null);
}
Join *CODECALL joinSeparator(ArrayBase *array, Str *separator) {
return new (array) Join(array, separator);
}
Join *CODECALL createJoin(ArrayBase *array, Str *separator, FnBase *lambda, void *lambdaCall, os::CallThunk thunk) {
return new (array) Join(array, separator, lambda, lambdaCall, thunk);
}
JoinTemplate::JoinTemplate() : Template(new (engine()) Str(S("join"))) {
created2 = new (this) Map<Type *, Named *>();
created3 = new (this) Map<Type *, Named *>();
}
MAYBE(Named *) JoinTemplate::generate(SimplePart *part) {
Array<Value> *params = part->params;
if (params->count() < 1)
return null;
if (params->count() > 3)
return null;
Value array = params->at(0).asRef(false);
Value element = unwrapArray(array).asRef(false);
// It wasn't an array - type did not change.
if (array.type == element.type)
return null;
Engine &e = engine();
Type *strType = Str::stormType(e);
Type *joinType = Join::stormType(e);
if (params->count() == 1) {
// join(<array>)
Array<Value> *params = new (this) Array<Value>(1, Value());
params->at(0) = array;
return nativeFunction(e, Value(joinType), S("join"), params, address(&joinBase));
} else if (params->count() == 2 && params->at(1).type == strType) {
// join(<array>, <string>)
Array<Value> *params = new (this) Array<Value>(2, Value());
params->at(0) = array;
params->at(1) = Value(strType);
return nativeFunction(e, Value(joinType), S("join"), params, address(&joinSeparator));
} else {
// either: join(<array>, <lambda>) or join(<array>, <string>, <lambda>)
if (params->count() == 3 && params->at(1).type != strType)
return null;
// See if we created this version earlier.
Map<Type *, Named *> *created = created2;
if (params->count() == 3)
created = created3;
if (Named *x = created->get(element.type, null))
return x;
// Just generate what we need, otherwise auto-inference does not work.
Array<Value> *fnParams = new (this) Array<Value>(2, Value());
fnParams->at(0) = Value(strType);
fnParams->at(1) = element.asRef(false);
Type *f = fnType(fnParams);
Array<Value> *par = new (this) Array<Value>(*params);
par->at(0) = array;
par->last() = Value(f);
Function *lambdaCall = as<Function>(f->find(S("call"), valList(e, 2, Value(f), element), Scope()));
if (!lambdaCall)
throw new (this) InternalError(S("Unable to find the 'call' member of a function object."));
code::Listing *l = new (this) code::Listing(false, e.ptrDesc());
{
using namespace code;
TypeDesc *ptrDesc = e.ptrDesc();
Var array = l->createParam(ptrDesc);
Operand sep = ptrConst(0);
if (params->count() == 3)
sep = l->createParam(ptrDesc);
Var lambda = l->createParam(ptrDesc);
*l << prolog();
*l << fnParam(ptrDesc, array);
*l << fnParam(ptrDesc, sep);
*l << fnParam(ptrDesc, lambda);
*l << fnParam(ptrDesc, lambdaCall->ref());
*l << fnParam(ptrDesc, lambdaCall->thunkRef());
*l << fnCall(e.ref(builtin::createJoin), false, ptrDesc, ptrA);
*l << fnRet(ptrA);
}
Named *result = dynamicFunction(e, Value(joinType), S("join"), par, l);
created->put(element.type, result);
return result;
}
// Should not happen:
return null;
}
}
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