Reception
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| Developer(s) | |
|---|---|
| Stable release | none yet (as of February 2015) |
| Written in | C++, Go, Java, JavaScript, Shell, Clojure |
| Operating system | Debian |
| Type | Indexer and cross-referencer |
| License | Apache License 2.0 |
| Website | kythe |
Google Kythe is a source code indexer and cross-referencer for code comprehension which describes itself as a "pluggable, (mostly) language-agnostic ecosystem for building tools that work with code". [1]
The entirety of the Google team working on Kythe was laid off in April 2024, as part of a company push to move certain roles overseas. [2] [3]
The core of Google Kythe is in defining language-agnostic protocols and data formats for representing, accessing and querying source code information as data. Kythe relies on an instrumented build system and compilers that produce indexing information, semantic information and metadata in Kythe specified format. This information obtained from running an instrumented build is stored in a language-agnostic graph structure. Finally, this graph structure can be queried to answer questions about the code base. [4]
Google Kythe is an open-source project being developed by Google. [5] It is licensed under an Apache licence 2.0.
Google Kythe originates from an internal project called Grok.
Grok had been proposed by Steve Yegge in 2008. [6] Yegge observed that software projects routinely use more than 3 programming languages, yet development tools tend to be language specific and don't handle multiple programming languages well. Adding support for a language to an IDE is hard and the ad hoc analysis tools in IDEs tend to be inferior to real parsers and compilers. [7]
Some parts of Grok were publicly released even before Google Kythe was announced. In 2010, Google released a Python static analyzer which has been developed as part of Grok. [8]
In 2012, C++, Java, Python, JS and "2 internal languages" were supported by Grok. There was a browser client with support for querying the database and visually navigating through the source code. There was an Emacs client. [7]
Chromium Code Search Browser [9] uses Grok index to provide quick links to definition for every symbol in the source code. [10]
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An integrated development environment (IDE) is a software application that provides comprehensive facilities for software development. An IDE normally consists of at least a source-code editor, build automation tools, and a debugger. Some IDEs, such as IntelliJ IDEA, Eclipse and Lazarus contain the necessary compiler, interpreter or both; others, such as SharpDevelop and NetBeans, do not.
Jython is an implementation of the Python programming language designed to run on the Java platform. It was known as JPython until 1999.
In computer-based language recognition, ANTLR, or ANother Tool for Language Recognition, is a parser generator that uses a LL(*) algorithm for parsing. ANTLR is the successor to the Purdue Compiler Construction Tool Set (PCCTS), first developed in 1989, and is under active development. Its maintainer is Professor Terence Parr of the University of San Francisco.
A call graph is a control-flow graph, which represents calling relationships between subroutines in a computer program. Each node represents a procedure and each edge (f, g) indicates that procedure f calls procedure g. Thus, a cycle in the graph indicates recursive procedure calls.
Grok is a word coined by Robert Heinlein meaning "to know intimately".
Google Code Search was a free beta product from Google which debuted in Google Labs on October 5, 2006, allowing web users to search for open-source code on the Internet. Features included the ability to search using operators, namely lang:, package:, license:, and file:.
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Web2py is an open-source web application framework written in the Python programming language. Web2py allows web developers to program dynamic web content using Python. Web2py is designed to help reduce tedious web development tasks, such as developing web forms from scratch, although a web developer may build a form from scratch if required.
Chromium is a free and open-source web browser project, primarily developed and maintained by Google. It is a widely-used codebase, providing the vast majority of code for Google Chrome and many other browsers, including Microsoft Edge, Samsung Internet, and Opera. The code is also used by several app frameworks.
Redis is a source-available, in-memory storage, used as a distributed, in-memory key–value database, cache and message broker, with optional durability. Because it holds all data in memory and because of its design, Redis offers low-latency reads and writes, making it particularly suitable for use cases that require a cache. Redis is the most popular NoSQL database, and one of the most popular databases overall. Redis is used in companies like Twitter, Airbnb, Tinder, Yahoo, Adobe, Hulu, Amazon and OpenAI.
Steve Yegge is an American computer programmer and blogger who is known for writing about programming languages, productivity and software culture through his "Stevey's Drunken Blog Rants" site, followed by "Stevey's Blog Rants."
asm.js is a subset of JavaScript designed to allow computer software written in languages such as C to be run as web applications while maintaining performance characteristics considerably better than standard JavaScript, which is the typical language used for such applications.
GNOME Builder is a general purpose integrated development environment (IDE) for the GNOME platform, primarily designed to aid in writing GNOME-based applications. It was initially released on March 24, 2015, replacing Anjuta. The application's tagline is "A toolsmith for GNOME-based applications".
Bazel is a free and open-source software tool used for the automation of building and testing software. Google uses the build tool Blaze internally and released an open-source port of the Blaze tool as Bazel, named as an anagram of Blaze. Bazel was first released in March 2015 and entered beta by September 2015. Version 1.0 was released in October 2019.
Sourcegraph Inc. is a company developing code search and code intelligence tool that semantically indexes and analyzes large codebases so that they can be searched across commercial, open-source, local, and cloud-based repositories.
Sourcetrail was a FOSS source code explorer that provided interactive dependency graphs and support for multiple programming languages including C, C++, Java and Python.
In computing, Tree-sitter is a parser generator and incremental parsing library.
