Add pattern tree parser infra and connect with cacheset and apt list

This adds a transformation from parse tree into a CacheFilter and
connects it with cachesets and the apt list command.

1 files changed, 15 insertions, 0 deletions

diff --git a/apt-pkg/cachefilter-patterns.h b/apt-pkg/cachefilter-patterns.h
index dfbcd66a5..3097ba94b 100644
--- a/apt-pkg/cachefilter-patterns.h
+++ b/apt-pkg/cachefilter-patterns.h
@@ -98,6 +98,21 @@ struct PatternTreeParser
    std::unique_ptr<Node> parseQuotedWord();
 };
 
+/**
+ * \brief PatternParser parses the given sentence into a parse tree.
+ *
+ * The parse tree consists of nodes:
+ *  - Word nodes which contains words or quoted words
+ *  - Patterns, which represent ?foo and ?foo(...) patterns
+ */
+struct PatternParser
+{
+   pkgCacheFile *file;
+
+   std::unique_ptr<APT::CacheFilter::Matcher> aPattern(std::unique_ptr<PatternTreeParser::Node> &nodeP);
+   std::string aWord(std::unique_ptr<PatternTreeParser::Node> &nodeP);
+};
+
 } // namespace Internal
 } // namespace APT
 #endif