boolean (@Nullable PsiElement patternNode, @Nullable PsiElement matchNode) { if (patternNode == null) { return isLeftLooseMatching(); } final MatchingHandler handler = matchContext.getPattern().getHandler(patternNode); return matchNode != null ? handler.match(patternNode, matchNode, matchContext) && handler.validate(matchContext, 1) : handler.validate(matchContext, 0); }