static malValuePtr readForm(Tokeniser& tokeniser)
{
MAL_CHECK(!tokeniser.eof(), "expected form, got EOF");
String token = tokeniser.peek();
MAL_CHECK(!std::regex_match(token, closeRegex),
"unexpected '%s'", token.c_str());
if (token == "(") {
tokeniser.next();
std::unique_ptr<malValueVec> items(new malValueVec);
readList(tokeniser, items.get(), ")");
return mal::list(items.release());
}
if (token == "[") {
tokeniser.next();
std::unique_ptr<malValueVec> items(new malValueVec);
readList(tokeniser, items.get(), "]");
return mal::vector(items.release());
}
if (token == "{") {
tokeniser.next();
malValueVec items;
readList(tokeniser, &items, "}");
return mal::hash(items.begin(), items.end(), false);
}
return readAtom(tokeniser);
}
static void readList(Tokeniser& tokeniser, malValueVec* items,
const String& end)
{
while (1) {
MAL_CHECK(!tokeniser.eof(), "expected '%s', got EOF", end.c_str());
if (tokeniser.peek() == end) {
tokeniser.next();
return;
}
items->push_back(readForm(tokeniser));
}
}