internal IList <RuleMatch> GetMatches(CompiledRule rule)
{
var matches = new List <RuleMatch>();
if (!IsEmpty)
{
foreach (var node in GetLeaves())
{
var refs = node.FindRefs();
var path = node.GetPath()
.Skip(1) // always a zero in the first node
.Select(n => n.Location).ToList();
matches.Add(new RuleMatch {
rule = rule,
path = path,
refs = refs
});
}
if (matches.Count == 0)
{
throw Error.Assert("no paths");
}
//if (matches.Count >= 2 && paths.Any(p => p.Count != paths[0].Count)) throw Error.Assert("unequal paths");
}
return(matches);
}
//==========================================================================
//
// compile a rule
internal CompiledRule CompileRule(AtomicRule rule)
{
_parser.DebugLog("{0}", rule);
if (rule.Directions.Count != 1)
{
throw Error.Assert("direction count");
}
for (int i = 0; i < rule.Patterns.Count; i++)
{
// TODO: check singleton rules here
}
var crule = new CompiledRule {
RuleId = rule.RuleId,
RuleDirection = rule.Directions.First(),
PatternCode = CompilePattern(rule.Directions.First(), rule.Patterns),
ActionCode = (rule.HasAction)
? CompileActions(rule.Directions.First(), rule.Patterns, rule.Actions)
: RuleCode.Empty,
CommandCode = (rule.HasCommand)
? CompileCommand(rule.Commands)
: RuleCode.Empty,
};
return(crule);
}