🚨 This implementation is still in very early stage and follows the latest LSIF specification closely.

The purpose of the Language Server Index Format (LSIF) is to define a standard format for language servers or other programming tools to dump their knowledge about a workspace. This dump can later be used to answer language server LSP requests for the same workspace without running the language server itself. Since much of the information would be invalidated by a change to the workspace, the dumped information typically excludes requests used when mutating a document. So, for example, the result of a code complete request is typically not part of such a dump.

A first draft specification can be found here.

1. Download and build this program via go get github.com/sourcegraph/lsif-go/cmd/lsif-go.
2. The binary lsif-go should be installed into your $GOPATH/bin directory.
3. Make sure you have added $GOPATH/bin to your $PATH envrionment variable.
4. Go to a root directory of a Go project, then execute lsif-go:

➜ lsif-go --out data.lsif
4 package(s), 10 file(s), 597 def(s), 11521 element(s)
Processed in 770.817859ms

By default, the indexer will read the current directory as the root of the project.

Use lsif-go --help for more information

Go to https://sourcegraph.com/github.com/gorilla/mux@d83b6ff/-/blob/mux.go and try to hover and jump around!

• Validate: lsif-util validate data.lsif
• Visualize: lsif-util visualize data.lsif --distance 2 | dot -Tpng -o image.png