Systems and methods are disclosed for generating functionality representation, indexing, searching, componentizing, an analyzing source code source code unit in a one or more of code repositories. The systems and method include one or more of crawling a set of data entities in a repository system; parsing said set of data entities into abstract syntax trees (ASTs) architecture; modeling said set of data entities into a code graph (CG) architecture; establishing type ontology (TO) architecture of said set of data entities; organizing and storing said set of data entities in functionality representation index (FRI) architecture; componentizing one or more projects in the repositories into code components; and making the components discoverable by functionality and analyzable for performance, usage volume, etc.