Parser on browser¶

Demo¶

Feature¶

The operator table is editable by the user in a textbox, for example:

// define operators here
// arguments: name, priority (>0), associativity ('left', 'right')

operator('+', 1, 'left');
operator('^', 3, 'left');
operator('-', 1, 'left');
operator('*', 2, 'left');
operator('/', 2, 'left');
operator('**', 3, 'right');

The parser understand ‘(‘ ‘)’
The user input an expression and receive a list of tokens, then the parser result, for example:

eparse> 2+2*2**2**2*2+2
tokens: [number(2), op(+), number(2), op(*), number(2), op(**), number
(2), op(**), number(2), op(*), number(2), op(+), number(2)]
result: [[2 + [[2 * [2 ** [2 ** 2]]] * 2]] + 2]

Read code!¶

Its parser is about 200 lines.

https://github.com/nishio/Parser-on-browser

See guide.rst for a high-level guide of the code.

License¶

GPLv3 (c) NISHIO Hirokazu 2012

Thanks¶

Paweł Marczewski contributed much to the project.

Table Of Contents

Parser on browser
- Demo
- Feature
- Read code!
- License
- Thanks

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