private HashSet <LookaheadSymbol> TotalLookahead(LRConfig config)
{
bool flag = false;
var set = new HashSet <LookaheadSymbol>();
for (int offset = 0; (offset < config.CheckaheadCount()) && !flag; offset++)
{
var build = config.Checkahead(offset);
ConfigTrackSource source = (build.Symbol.Type == ESymbolType.NonTerminal ? ConfigTrackSource.First : ConfigTrackSource.Config);
foreach (var j in build.First)
{
LookaheadSymbol item = new LookaheadSymbol(j);
if (item.Parent.Symbol.Type != ESymbolType.NonTerminal)
{
item.Configs.Add(new ConfigTrack(config, source));
set.Add(item);
}
}
flag = !build.Nullable;
}
if (!flag)
{
set.UnionWith(config.LookaheadSet);
}
return(set);
}
private bool PopulateLookahead(LRConfig config)
{
if (config.InheritLookahead)
{
bool flag = false;
for (var i = 0; (i < config.CheckaheadCount()) & !flag; ++i)
{
var build = config.Checkahead(i);
flag = !build.Nullable;
}
return(!flag);
}
return(false);
}
public ConfigTrack(LRConfig config, ConfigTrackSource source)
{
m_parent = config;
m_fromConfig = source == ConfigTrackSource.Config;
m_fromFirst = source == ConfigTrackSource.First;
}
public ConfigTrack(ConfigTrack track)
{
m_parent = track.m_parent;
m_fromConfig = track.FromConfig;
m_fromFirst = track.m_fromFirst;
}