private IList <SequenceMatchRules.IRule> Collapse(IList <SequenceMatchRules.IRule> rules)
{
IList <SequenceMatchRules.IRule> collapsed = new List <SequenceMatchRules.IRule>();
IList <TokenSequencePattern> patterns = null;
SequenceMatchRules.AnnotationExtractRule aerTemplate = null;
foreach (SequenceMatchRules.IRule rule in rules)
{
bool ruleHandled = false;
if (rule is SequenceMatchRules.AnnotationExtractRule)
{
SequenceMatchRules.AnnotationExtractRule aer = (SequenceMatchRules.AnnotationExtractRule)rule;
if (aer.HasTokensRegexPattern())
{
if (aerTemplate == null || aerTemplate.IsMostlyCompatible(aer))
{
if (aerTemplate == null)
{
aerTemplate = aer;
}
if (patterns == null)
{
patterns = new List <TokenSequencePattern>();
}
patterns.Add((TokenSequencePattern)aer.pattern);
ruleHandled = true;
}
}
}
// Did we handle this rule?
if (!ruleHandled)
{
if (aerTemplate != null)
{
SequenceMatchRules.AnnotationExtractRule merged = CreateMergedRule(aerTemplate, patterns);
collapsed.Add(merged);
aerTemplate = null;
patterns = null;
}
collapsed.Add(rule);
}
}
if (aerTemplate != null)
{
SequenceMatchRules.AnnotationExtractRule merged = CreateMergedRule(aerTemplate, patterns);
collapsed.Add(merged);
}
return(collapsed);
}
// used to be INFO but annoyed Chris/users
private SequenceMatchRules.AnnotationExtractRule CreateMergedRule(SequenceMatchRules.AnnotationExtractRule aerTemplate, IList <TokenSequencePattern> patterns)
{
return(SequenceMatchRules.CreateMultiTokenPatternRule(env, aerTemplate, patterns));
}
/// <summary>Add specified rules to this extractor.</summary>
/// <param name="rules"/>
public virtual void AppendRules(IList <SequenceMatchRules.IRule> rules)
{
if (verbose)
{
log.Info("Read " + rules.Count + " rules");
}
// Put rules into stages
if (collapseExtractionRules)
{
rules = Collapse(rules);
if (verbose)
{
log.Info("Collapsing into " + rules.Count + " rules");
}
}
foreach (SequenceMatchRules.IRule r in rules)
{
if (r is SequenceMatchRules.AssignmentRule)
{
// Nothing to do
// Assignments are added to environment as they are parsed
((SequenceMatchRules.AssignmentRule)r).Evaluate(env);
}
else
{
if (r is SequenceMatchRules.AnnotationExtractRule)
{
SequenceMatchRules.AnnotationExtractRule aer = (SequenceMatchRules.AnnotationExtractRule)r;
CoreMapExpressionExtractor.Stage <T> stage = stages[aer.stage];
if (stage == null)
{
stages[aer.stage] = stage = new CoreMapExpressionExtractor.Stage <T>();
stage.stageId = aer.stage;
bool clearMatched = (bool)env.GetDefaults()["stage.clearMatched"];
if (clearMatched != null)
{
stage.clearMatched = clearMatched;
}
int limitIters = (int)env.GetDefaults()["stage.limitIters"];
if (limitIters != null)
{
stage.limitIters = limitIters;
}
}
if (aer.active)
{
if (SequenceMatchRules.FilterRuleType.Equals(aer.ruleType))
{
stage.AddFilterRule(aer);
}
else
{
if (aer.isComposite)
{
// if (SequenceMatchRules.COMPOSITE_RULE_TYPE.equals(aer.ruleType)) {
stage.AddCompositeRule(aer);
}
else
{
stage.AddBasicRule(aer);
}
}
}
else
{
log.Debug("Ignoring inactive rule: " + aer.name);
}
}
}
}
}
