Goggle 🥽

Search your api through types, with speed

Overview

Goggle is a type-directed search engine like hoogle but for Go

🎉 Try Goggle now!

Try Goggle for yourself! You can now visit here to see Goggle in action.

📷 Demo

🔍 Query

You can type query to search and filter results.

The most simplest form is just Go's standard function definition.

func length(s string) int

But we can omit a function name, to retrieve results whose name does not match with length.

func (s string) int

We can omit a func keyword too.

(s string) int

Finally, we can omit argument names.

(string) int

Query syntax definition

Type = Primitives | SliceType | PointerType | identifier .
Primitives = "bool" | Int | UInt | "float32" | "float64" | "complex64" | "complex128" .
Int = "int" | "int8" | "int16" | "int32" | "int64" .
UInt = "uint" | "uint8" | "uint16" | "uint32" | "uint64" | "uintptr" .

SliceType = "[" "]" Type .

Parameters = "(" [ Type { "," Type } ] ")" .
Query = [ "func" ] [ identifier ] Parameters [ Type ] .

Build Manually

$ git clone https://github.com/abiriadev/goggle && cd goggle

Build indexer from source and index custom packages

$ go run ./cmd/indexer
# or
$ go run ./cmd/indexer <space separated list of packages to index>

See help page for more information:

Usage of indexer:
  -f string
        index format (default "gob")
  -o string
        path to save index file

Build and run REPL

$ go run ./cmd/repl
# or optionally pass a path to index file to use
$ go run ./cmd/repl <index file to use>

It will then show you a prompt starting with λ.

Type any query(like () bool) and enter to see the results.

λ () bool
func utf8.FullRune() bool       // FullRune reports whether the bytes in p begin with a full UTF-8 encoding of a rune.
func nettest.TestableAddress() bool     // TestableAddress reports whether address of network is testable on the current platform configuration.
func nettest.SupportsRawSocket() bool   // SupportsRawSocket reports whether the current session is available to use raw sockets.
func nettest.SupportsIPv6() bool        // SupportsIPv6 reports whether the platform supports IPv6 networking functionality.
func nettest.SupportsIPv4() bool        // SupportsIPv4 reports whether the platform supports IPv4 networking functionality.
func signal.Ignored() bool      // Ignored reports whether sig is currently ignored.
func slices.Equal() bool        // Equal reports whether two slices are equal: the same length and all elements equal.
func testenv.OptimizationOff() bool     // OptimizationOff reports whether optimization is disabled.
func testenv.HasSymlink() bool  // HasSymlink reports whether the current system can use os.Symlink.
func testenv.HasSrc() bool      // HasSrc reports whether the entire source tree is available under GOROOT.

Build and run Goggle server

$ go run ./cmd/goggle

The default port number is 6099(L33T or Gogg). You can pass -port option to change it.

Usage of goggle:
  -port int
        port number to bind (default 6099)

Try requesting from terminal:

$ http :6099/search q='() bool' -v

POST /search HTTP/1.1
Accept: application/json, */*;q=0.5
Accept-Encoding: gzip, deflate, br
Connection: keep-alive
Content-Length: 15
Content-Type: application/json
Host: localhost:6099
User-Agent: HTTPie/3.2.1

{
    "q": "() bool"
}

HTTP/1.1 200 OK
Access-Control-Allow-Origin: *
Content-Length: 1970
Content-Type: text/plain; charset=utf-8
Date: Tue, 12 Dec 2023 04:12:01 GMT

{
    "items": [
        {
            "sim": 0,
            "sig": "func utf8.FullRune() bool",
            "summary": "FullRune reports whether the bytes in p begin with a full UTF-8 encoding of a rune.",
            "link": "https://pkg.go.dev/unicode/utf8#FullRune"
        },
        {
            "sim": 0,
            "sig": "func nettest.TestableAddress() bool",
            "summary": "TestableAddress reports whether address of network is testable on the current platform configuration.",
            "link": "https://pkg.go.dev/golang.org/x/net/nettest#TestableAddress"
        },
        ...
    ]
}

Build and run frontend

Ensure that you have Go, Task, Node.js, and Binaryen installed.

Then, execuate the following commands:

$ task wasm-exec syntaxck
$ corepack enable
$ pnpm install --frozen-lockfile
$ cd frontend

If you don't want to have local Goggle proxy, you can specify your already-deployed endpoint by setting VITE_EXTERN_ENDPOINT variable.

$ echo 'VITE_EXTERN_ENDPOINT=<type your endpoint url here>' > .env.production

Then, run!

$ pnpm dev
# Or, to use an external endpoint:
$ pnpm dev --mode production

For building the frontend for deployment or serving:

$ pnpm build

📝 TODO

• Index
  • Portable index file
  • Index popular packages
• Incremental search
• Frontend
  • Standalone result view
  • Link to pkg.go.dev
  • Brief description
  • Syntax hightlighting for search result
  • Use dedicated search bar component
• Query
  • Compound types
    • Array
    • Slice
    • Pointer type
    • Inline struct type
    • Interface resolution
  • Method
  • Multiple return
  • Parameter collaping
  • Spread syntax
  • Generics
    • Constraints
• Levenshtein distance
  • Argument-level similarity comparison
  • Hoogle-like structured edit distance
    • Subtype polymorphic edit distance
• GHA CD automation
• External tools
  • REPL
  • vscode extension
  • neovim LSP support?

😀 This is really awwwesome!! How can I help?

There are many ways to support and contribute to the ongoing maintenance and improvement of Goggle. Any support is greatly appreciated!

• Spread the world. Share Goggle with your co-workers, students, and community so that they can find it useful as well!
• Report bugs. If you encounter any unexpected behavior or runtime panics, please open an issue to report and document them.
• Make your document cleaner. Although Goggle can find items without documentation, it doesn't have a power to generate intuitive identifiers and descriptive summaries. So it's a good idea to document you package thoroughly to enhance developer experience.
• Suggest better idea. Currently, Goggle's approximate search doesn't support structural edit-distance, and there are still a lot of missing features. Your suggestions for more accurate and efficient implementations are always welcome.
• Build creative tools on top of Goggle. Goggle currently supports web search and REPL, but the possibilities for its application are limitless. Ideas like a vscode extension, LSP autocompletion, etc., could significantly expand its ecosystem.