pegjs

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History

David Majda 1b2279e026 Error handling: Make predicates always return \|undefined\| After making the \|?\| operator return \|null\| instead of an empty string in the previous commit, empty strings were still returned from predicates. This didn't make much sense. Return value of a predicate is unimportant (if you have one in hand, you already know the predicate succeeded) and one could even argue that predicates shouldn't return any value at all. The closest thing to "return no value" in JavaScript is returning \|undefined\|, so I decided to make predicates return exactly that. Implements part of #198.		11 years ago
..
compiler/passes	Error handling: Make predicates always return \|undefined\|	11 years ago
vendor/jasmine	Upgrade jasmine and jasmine-node	11 years ago
README	Git repo npmization: Make the repo a npm package	12 years ago
generated-parser.spec.js	Error handling: Make predicates always return \|undefined\|	11 years ago
helpers.js	Fix too eager proxy rules removal	12 years ago
index.html	Code generator rewrite	12 years ago
parser.spec.js	Remove the \|startRule\| property from the AST	12 years ago

README

PEG.js Spec Suite
=================

This is the PEG.js spec suite. It ensures PEG.js works correctly. All specs
should always pass on all supported platforms.

Running in a browser
--------------------

  1. Make sure you have Node.js and all the development dependencies specified
     in package.json installed.

  2. Run the following command in the PEG.js root directory (one level up from
     this one):

       make browser

  3. Start a web server and make it serve the PEG.js root directory.

  4. Point your browser to an URL corresponding to the index.html file.

  5. Watch the specs pass (or fail).

If you have Python installed, you can fulfill steps 3 and 4 by running the
following command in the PEG.js root directory

  python -m SimpleHTTPServer

and loading http://localhost:8000/spec/index.html in your browser.

Running from a command-line
---------------------------

  1. Make sure you have Node.js and all the development dependencies specified
     in package.json installed.

  2. Run the following command in the PEG.js root directory (one level up from
     this one):

       make spec

  3. Watch the specs pass (or fail).