public Object isDefined(VirtualFrame frame) {
return Layouts.STRING.createString(
Layouts.CLASS.getInstanceFactory(getContext().getCoreLibrary().getStringClass()),
StringOperations.encodeByteList("expression", UTF8Encoding.INSTANCE),
StringSupport.CR_7BIT,
null);
}
@TruffleBoundary
@Specialization
public DynamicObject toS(DynamicObject value, NotProvided base) {
return create7BitString(
StringOperations.encodeByteList(
Layouts.BIGNUM.getValue(value).toString(), USASCIIEncoding.INSTANCE));
}
@TruffleBoundary
@Specialization
public DynamicObject toS(DynamicObject value, int base) {
if (base < 2 || base > 36) {
CompilerDirectives.transferToInterpreter();
throw new RaiseException(
getContext().getCoreLibrary().argumentErrorInvalidRadix(base, this));
}
return create7BitString(
StringOperations.encodeByteList(
Layouts.BIGNUM.getValue(value).toString(base), USASCIIEncoding.INSTANCE));
}
@Override
public Object isDefined(VirtualFrame frame) {
CompilerDirectives.transferToInterpreter();
final DynamicObject threadLocalVariablesObject =
threadLocalVariablesObjectNode.executeDynamicObject(frame);
if (readNode.getName().equals("$~")
|| readNode.getName().equals("$!")
|| readNode.execute(threadLocalVariablesObject) != nil()) {
return create7BitString(
StringOperations.encodeByteList("global-variable", UTF8Encoding.INSTANCE));
} else {
return nil();
}
}
@Override
public Object isDefined(VirtualFrame frame) {
return create7BitString(
StringOperations.encodeByteList(Boolean.toString(value), UTF8Encoding.INSTANCE));
}