static void ensure(WrenVM* vm)
{
int before = wrenGetSlotCount(vm);
wrenEnsureSlots(vm, 20);
int after = wrenGetSlotCount(vm);
// Use the slots to make sure they're available.
for (int i = 0; i < 20; i++)
{
wrenSetSlotDouble(vm, i, i);
}
int sum = 0;
for (int i = 0; i < 20; i++)
{
sum += (int)wrenGetSlotDouble(vm, i);
}
char result[100];
sprintf(result, "%d -> %d (%d)", before, after, sum);
wrenSetSlotString(vm, 0, result);
}
static void ensureOutsideForeign(WrenVM* vm)
{
// To test the behavior outside of a foreign method (which we're currently
// in), create a new separate VM.
WrenConfiguration config;
wrenInitConfiguration(&config);
WrenVM* otherVM = wrenNewVM(&config);
int before = wrenGetSlotCount(otherVM);
wrenEnsureSlots(otherVM, 20);
int after = wrenGetSlotCount(otherVM);
// Use the slots to make sure they're available.
for (int i = 0; i < 20; i++)
{
wrenSetSlotDouble(otherVM, i, i);
}
int sum = 0;
for (int i = 0; i < 20; i++)
{
sum += (int)wrenGetSlotDouble(otherVM, i);
}
wrenFreeVM(otherVM);
char result[100];
sprintf(result, "%d -> %d (%d)", before, after, sum);
wrenSetSlotString(vm, 0, result);
}
static void directoryListCallback(uv_fs_t* request)
{
if (handleRequestError(request)) return;
uv_dirent_t entry;
WrenVM* vm = getVM();
wrenEnsureSlots(vm, 3);
wrenSetSlotNewList(vm, 2);
while (uv_fs_scandir_next(request, &entry) != UV_EOF)
{
wrenSetSlotString(vm, 1, entry.name);
wrenInsertInList(vm, 2, -1, 1);
}
schedulerResume(freeRequest(request), true);
schedulerFinishResume();
}
static void setSlots(WrenVM* vm)
{
WrenHandle* handle = wrenGetSlotHandle(vm, 1);
wrenSetSlotBool(vm, 1, true);
wrenSetSlotBytes(vm, 2, "by\0te", 5);
wrenSetSlotDouble(vm, 3, 1.5);
wrenSetSlotString(vm, 4, "str");
// TODO: wrenSetSlotNull().
// Read the slots back to make sure they were set correctly.
bool result = true;
if (wrenGetSlotBool(vm, 1) != true) result = false;
int length;
const char* bytes = wrenGetSlotBytes(vm, 2, &length);
if (length != 5) result = false;
if (memcmp(bytes, "by\0te", length) != 0) result = false;
if (wrenGetSlotDouble(vm, 3) != 1.5) result = false;
if (strcmp(wrenGetSlotString(vm, 4), "str") != 0) result = false;
if (result)
{
// Move the value into the return position.
wrenSetSlotHandle(vm, 0, handle);
}
else
{
// If anything failed, return false.
wrenSetSlotBool(vm, 0, false);
}
wrenReleaseHandle(vm, handle);
}
void callRunTests(WrenVM* vm)
{
wrenEnsureSlots(vm, 1);
wrenGetVariable(vm, "main", "Call", 0);
WrenValue* callClass = wrenGetSlotValue(vm, 0);
WrenValue* noParams = wrenMakeCallHandle(vm, "noParams");
WrenValue* zero = wrenMakeCallHandle(vm, "zero()");
WrenValue* one = wrenMakeCallHandle(vm, "one(_)");
WrenValue* two = wrenMakeCallHandle(vm, "two(_,_)");
// Different arity.
wrenEnsureSlots(vm, 1);
wrenSetSlotValue(vm, 0, callClass);
wrenCall(vm, noParams);
wrenEnsureSlots(vm, 1);
wrenSetSlotValue(vm, 0, callClass);
wrenCall(vm, zero);
wrenEnsureSlots(vm, 2);
wrenSetSlotValue(vm, 0, callClass);
wrenSetSlotDouble(vm, 1, 1.0);
wrenCall(vm, one);
wrenEnsureSlots(vm, 3);
wrenSetSlotValue(vm, 0, callClass);
wrenSetSlotDouble(vm, 1, 1.0);
wrenSetSlotDouble(vm, 2, 2.0);
wrenCall(vm, two);
// Returning a value.
WrenValue* getValue = wrenMakeCallHandle(vm, "getValue()");
wrenEnsureSlots(vm, 1);
wrenSetSlotValue(vm, 0, callClass);
wrenCall(vm, getValue);
WrenValue* value = wrenGetSlotValue(vm, 0);
// Different argument types.
wrenEnsureSlots(vm, 3);
wrenSetSlotValue(vm, 0, callClass);
wrenSetSlotBool(vm, 1, true);
wrenSetSlotBool(vm, 2, false);
wrenCall(vm, two);
wrenEnsureSlots(vm, 3);
wrenSetSlotValue(vm, 0, callClass);
wrenSetSlotDouble(vm, 1, 1.2);
wrenSetSlotDouble(vm, 2, 3.4);
wrenCall(vm, two);
wrenEnsureSlots(vm, 3);
wrenSetSlotValue(vm, 0, callClass);
wrenSetSlotString(vm, 1, "string");
wrenSetSlotString(vm, 2, "another");
wrenCall(vm, two);
wrenEnsureSlots(vm, 3);
wrenSetSlotValue(vm, 0, callClass);
wrenSetSlotNull(vm, 1);
wrenSetSlotValue(vm, 2, value);
wrenCall(vm, two);
// Truncate a string, or allow null bytes.
wrenEnsureSlots(vm, 3);
wrenSetSlotValue(vm, 0, callClass);
wrenSetSlotBytes(vm, 1, "string", 3);
wrenSetSlotBytes(vm, 2, "b\0y\0t\0e", 7);
wrenCall(vm, two);
// Call ignores with extra temporary slots on stack.
wrenEnsureSlots(vm, 10);
wrenSetSlotValue(vm, 0, callClass);
for (int i = 1; i < 10; i++)
{
wrenSetSlotDouble(vm, i, i * 0.1);
}
wrenCall(vm, one);
wrenReleaseValue(vm, callClass);
wrenReleaseValue(vm, noParams);
wrenReleaseValue(vm, zero);
wrenReleaseValue(vm, one);
wrenReleaseValue(vm, two);
wrenReleaseValue(vm, getValue);
wrenReleaseValue(vm, value);
}
void schedulerResumeError(WrenValue* fiber, const char* error)
{
schedulerResume(fiber, true);
wrenSetSlotString(getVM(), 2, error);
resume(resumeError);
}