You are just in time for Sublime Text 3 !
Symbol Indexing. Sublime Text now scans the files in your project, and builds an index of which files contain which symbols. This backs the new features Goto Definition and Goto Symbol in Project, both of which are available from the Goto menu. Goto Definition takes you to the definition of the symbol under the caret, while Goto Symbol in Project prompts you to select a symbol via fuzzy matching, and then takes you to the definition of that symbol.