/// <summary>
/// puts ((1..20).to_a) (ok)
/// puts (1..20).to_a (error)
/// </summary>
/// <returns></returns>
private ArgsNode ParseExpressionListAsArgs()
{
ArgsNode parameters = new ArgsNode();
bool inparentheses = TryParseToken(TokenType.Separator, "(");
for (AstNode expression = ParseExpression();
expression != null;
expression = ParseExpression())
{
parameters.Push(expression);
if (!TryParseToken(TokenType.Separator, ","))
{
break;
}
}
if (inparentheses)
{
ParseToken(TokenType.Separator, ")");
if (TryParseName(DO))
{
parameters.Push(ParseBlockExpression());
}
else if (TryParseToken(TokenType.Separator, "{"))
{
parameters.Push(ParseBlockExpression(true));
}
}
return(parameters);
}
private ArgsNode ParseParameterList(bool canhaveparens = true)
{
Token token = null;
ArgsNode parameters = new ArgsNode();
bool inparentheses = false;
if (canhaveparens)
{
inparentheses = TryParseToken(TokenType.Separator, "(");
}
for (string name = TryParseName(out token); name != null; name = ParseName(out token))
{
if (name.StartsWith("&"))
{
parameters.block = NODE_LINENO(new SymNode(name), token);
}
else
{
parameters.Push(NODE_LINENO(new SymNode(name), token));
}
if (!TryParseToken(TokenType.Separator, ","))
{
break;
}
}
if (inparentheses)
{
ParseToken(TokenType.Separator, ")");
}
return(parameters);
}