jarser is a parser.
jarser is not a parser generator. yacc
and bison are classic examples of parser
generators.
Currently, rule configuration and parsing are performed at runtime.
Install jarser with npm.
$ npm install [--save] jarserconst Jarser = require('jarser');
const jarser = new Jarser();
jarser.addRule(...);
const rootNode = jarser.parse(tokens);A scanner scans a file into a sequence of characters. (If using Node.js,
you can rely on the built-in fs module for this.)
A lexer (or tokenizer) lexes a sequence of characters into a sequence of
tokens, using a defined set of rules. (I recommend jexer for this stage:
jexer on npm
jexer on GitHub)
A parser parses a sequence of tokens into a syntax tree, using a defined
set of rules. (This is what jarser does.)
A compiler compiles the syntax tree into target code, such as assembly.
An assembler assembles that code into machine code, which a processor can execute directly.