From fae6f127d178293fd4555e61cdd6caab713a7d88 Mon Sep 17 00:00:00 2001 From: "German M. Bravo" Date: Mon, 17 Jul 2017 10:13:32 -0500 Subject: [PATCH] Updated readme --- README.md | 48 +++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 47 insertions(+), 1 deletion(-) diff --git a/README.md b/README.md index 6bb760c..5a12975 100644 --- a/README.md +++ b/README.md @@ -1 +1,47 @@ -# esprima-python +[![PyPI version](https://img.shields.io/pypi/v/esprima.svg)](https://pypi.python.org/pypi/esprima) +[![PyPI downloads](https://img.shields.io/pypi/dm/esprima.svg)](https://pypi.python.org/pypi/esprima) + +**Esprima** ([esprima.org](http://esprima.org), BSD license) is a high performance, +standard-compliant [ECMAScript](http://www.ecma-international.org/publications/standards/Ecma-262.htm) +parser officially written in ECMAScript (also popularly known as +[JavaScript](https://en.wikipedia.org/wiki/JavaScript)) and ported to Python. +Esprima is created and maintained by [Ariya Hidayat](https://twitter.com/ariyahidayat), +with the help of [many contributors](https://github.com/jquery/esprima/contributors). + +Python port is a line-by-line manual translation and was created and is maintained by [German Mendez Bravo (Kronuz)](https://twitter.com/germbravo). + +### Features + +- Full support for ECMAScript 2017 ([ECMA-262 8th Edition](http://www.ecma-international.org/publications/standards/Ecma-262.htm)) +- Sensible [syntax tree format](https://github.com/estree/estree/blob/master/es5.md) as standardized by [ESTree project](https://github.com/estree/estree) +- Experimental support for [JSX](https://facebook.github.io/jsx/), a syntax extension for [React](https://facebook.github.io/react/) +- Optional tracking of syntax node location (index-based and line-column) +- [Heavily tested](http://esprima.org/test/ci.html) (~1500 [unit tests](https://github.com/jquery/esprima/tree/master/test/fixtures) with [full code coverage](https://codecov.io/github/jquery/esprima)) + +### Installation + +```shell +pip install esprima +``` + +### API + +Esprima can be used to perform [lexical analysis](https://en.wikipedia.org/wiki/Lexical_analysis) (tokenization) or [syntactic analysis](https://en.wikipedia.org/wiki/Parsing) (parsing) of a JavaScript program. + +A simple example: + +```python +>>> import esprima +>>> program = 'const answer = 42' + +>>> esprima.tokenize(program) +[{ type: "Keyword", value: "const" }, + { type: "Identifier", value: "answer" }, + { type: "Punctuator", value: "=" }, + { type: "Numeric", value: "42" }] + +>>> esprima.parseScript(program) +{ body: [{ kind: "const", declarations: [{ init: { raw: "42", type: "Literal", value: 42 }, type: "VariableDeclarator", id: { type: "Identifier", name: "answer" } }], type: "VariableDeclaration" }], type: "Program", sourceType: "script" } +``` + +For more information, please read the [complete documentation](http://esprima.org/doc).