remove package-lock and correct readme

This commit is contained in:
Aleksey Chichenkov 2019-01-29 11:17:41 +03:00
parent 6fbe357ab9
commit e56a8a7d9a
2 changed files with 10 additions and 270 deletions

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# LEMON.JS - LALR(1) Parser Generator for JavaScript
Lemon.JS is an LALR(1) parser generator for JavaScript based on Lemon parser generator for C included in SQLite package distribution.
## Parser Code Base
Files `lemon.c`, `lempar.c`, `lemon.html` are extracted from SQLite v3.17.0. Original parser generator code is slightly fixed to produce JavaScript compatible statements. Parser template translated from C to JavaScript. Source comments mostly not touched to keep it easy diff against original file.
Both original C version and patched JS version are included for side by side comparison for reference.
## Installation
Compile lenon-js.c with any C compiler and place in anywhere with lempar.js side by side.
## Compilation
Prerequisites: C compiler, for example GCC.
## Compile lemon-js
```bash
gcc -o lemon-js -O2 lemon-js.c
gcc -o ./lemon-src/lemon-js -O2 ./lemon-src/lemon-js.c
npm install
```
## Usage
## Start
You need create your config.js from config.template
```bash
lemon-js <filename>.y
npm main --c=<your_config>.js --t=<web|node>
```
See http://www.hwaci.com/sw/lemon/lemon.html for more details.
default config -> config.js
## Special Directives
@ -56,29 +43,5 @@ See lemon.html for additional documentation.
- %wildcard - Define WILDCARD token.
- %token_class - **NOT SUPPORTED**
Notes:
- some expressions, for example, regular expression `/\*/` could break lemon parser in `%code` or `%include` sections.
- the best place to put something like `module.exports = ParserName;` or `export default ParserName;` is in `%code` section.
## TODO
- add some tests for different options
- document variables
- YYNOERRORRECOVERY ?
- YYERRORSYMBOL ?
- rename methods, variables, get rid of YY prefixes?
- enable asserts, could be usefull for testing
## Alternative Lexers
- https://github.com/tantaman/lexed.js
- https://github.com/aaditmshah/lexer
- https://github.com/YuhangGe/jslex
## Alternative Parsers
- https://github.com/sormy/flex-js
- http://jscc.brobston.com
- http://zaach.github.io/jison/
- https://pegjs.org
## Original project
See https://github.com/sormy/lemon-js.

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