// ECMA-262 12.3 Left-Hand-Side Expressions
public List<Node> parseArguments()
{
List<Node> args = new List<Node>();
Node expr;
expect("(");
if (!match(")"))
{
while (startIndex < length)
{
if (match("..."))
{
expr = new Node();
lex();
expr.finishSpreadElement(isolateCoverGrammar(parseAssignmentExpression));
}
else
{
expr = isolateCoverGrammar(parseAssignmentExpression);
}
args.Add(expr);
if (match(")"))
{
break;
}
expectCommaSeparator();
}
}
expect(")");
return args;
}
// ECMA-262 12.2.5 Array Initializer
public Node parseArrayInitializer()
{
List<Node> elements = new List<Node>();
Node node = new Node();
Node restSpread;
expect("[");
while (!match("]"))
{
if (match(","))
{
lex();
elements.Add(null);
}
else if (match("..."))
{
restSpread = new Node();
lex();
restSpread.finishSpreadElement(inheritCoverGrammar(parseAssignmentExpression));
if (!match("]"))
{
isAssignmentTarget = isBindingElement = false;
expect(",");
}
elements.Add(restSpread);
}
else
{
elements.Add(inheritCoverGrammar(parseAssignmentExpression));
if (!match("]"))
{
expect(",");
}
}
}
lex();
return node.finishArrayExpression(elements);
}