/** PARSE METHOD for A -> V { '+' V } **/
Object A()
{
Object result;
Object V1 = V();
if( isFailure(V1) ) return failure;
result = V1;
while( skipWhitespace() &&
nextCharIs('+') )
{
Object V2 = V();
if( isFailure(V2) ) return
failure;
result =
OpenList.list("+", result, V2);
}
return result;
}