@Override
public RubyNode visitArgsNode(org.jruby.ast.ArgsNode node) {
argsNode = node;
final SourceSection sourceSection = translate(node.getPosition());
final List<RubyNode> sequence = new ArrayList<>();
int localIndex = 0;
if (node.getPre() != null) {
state = State.PRE;
for (org.jruby.ast.Node arg : node.getPre().childNodes()) {
sequence.add(arg.accept(this));
index = ++localIndex;
}
}
if (node.getOptArgs() != null) {
// (BlockNode 0, (OptArgNode:a 0, (LocalAsgnNode:a 0, (FixnumNode 0))), ...)
state = State.OPT;
for (org.jruby.ast.Node arg : node.getOptArgs().childNodes()) {
sequence.add(arg.accept(this));
index = ++localIndex;
}
}
if (node.getPost() != null) {
state = State.POST;
for (org.jruby.ast.Node arg : node.getPost().childNodes()) {
sequence.add(arg.accept(this));
index = ++localIndex;
}
}
if (node.getRestArgNode() != null) {
methodBodyTranslator.getEnvironment().hasRestParameter = true;
sequence.add(node.getRestArgNode().accept(this));
}
if (node.getBlock() != null) {
sequence.add(node.getBlock().accept(this));
}
return SequenceNode.sequence(context, sourceSection, sequence);
}
@JRubyMethod(name = "parameters", compat = CompatVersion.RUBY1_9)
public IRubyObject parameters(ThreadContext context) {
Ruby runtime = context.getRuntime();
RubyArray parms = RubyArray.newEmptyArray(runtime);
ArgsNode args;
if (!(this.getBlock().getBody() instanceof Interpreted19Block)) {
return parms;
}
// argument names are easily accessible from interpreter
RubyArray elem = RubyArray.newEmptyArray(runtime);
args = ((Interpreted19Block) this.getBlock().getBody()).getArgs();
// required parameters
List<Node> children = new ArrayList();
if (args.getPreCount() > 0) children.addAll(args.getPre().childNodes());
if (args.getPostCount() > 0) children.addAll(args.getPost().childNodes());
Iterator iter = children.iterator();
while (iter.hasNext()) {
Node node = (Node) iter.next();
elem = RubyArray.newEmptyArray(runtime);
elem.add(RubySymbol.newSymbol(runtime, this.isLambda() ? "req" : "opt"));
if (node instanceof ArgumentNode) {
elem.add(RubySymbol.newSymbol(runtime, ((ArgumentNode) node).getName()));
}
parms.add(elem);
}
// optional parameters
if (args.getOptArgs() != null) {
children = args.getOptArgs().childNodes();
if (!children.isEmpty()) {
iter = children.iterator();
while (iter.hasNext()) {
Node node = (Node) iter.next();
elem = RubyArray.newEmptyArray(runtime);
elem.add(RubySymbol.newSymbol(runtime, "opt"));
if (node instanceof OptArgNode) {
elem.add(RubySymbol.newSymbol(runtime, ((OptArgNode) node).getName()));
}
parms.add(elem);
}
}
}
ArgumentNode rest = args.getRestArgNode();
if (rest != null) {
elem = RubyArray.newEmptyArray(runtime);
elem.add(RubySymbol.newSymbol(runtime, "rest"));
elem.add(RubySymbol.newSymbol(runtime, rest.getName()));
parms.add(elem);
}
BlockArgNode blockArg = args.getBlock();
if (blockArg != null) {
elem = RubyArray.newEmptyArray(runtime);
elem.add(RubySymbol.newSymbol(runtime, "block"));
elem.add(RubySymbol.newSymbol(runtime, blockArg.getName()));
parms.add(elem);
}
return parms;
}