Commit Graph

3 Commits

Author SHA1 Message Date
Emily Eisenberg
4154c370ec Add tie symbol (~)
Summary:
Add real support for the tie symbol. Also, get rid of any of the
leftover bad support

Test Plan:
 - See the new normal tests succeed
 - See huxley tests didn't change except the new ones, which looks good

Reviewers: alpert

Reviewed By: alpert

Differential Revision: http://phabricator.khanacademy.org/D7772
2014-03-27 19:23:15 -04:00
Emily Eisenberg
7723d3dcaf First attempt at \text function
Summary:
Make all of the parsing functions keep track of whether they are
parsing in math mode or text mode. Then, add a separate lexing function to lex
text mode, which is different than the normal mode because it does weird things
with spacing and allows a different set of characters.

Test Plan:
 - See that the normal tests work
 - See that the huxley screenshot looks reasonable
 - See that none of the other huxley screenshots changed

Reviewers: alpert

Reviewed By: alpert

Differential Revision: http://phabricator.khanacademy.org/D7578
2014-03-26 22:17:41 -04:00
Emily Eisenberg
2eca338e23 Replace our annoying lookup tables with a unified symbol table
Summary:
Before, there were a couple problems:
1. There were similar tables of functions in the buildTree and Parser modules,
   making it hard to add new functions, and code duplication is bad
2. We distinguished the font to use (mostly just ams vs normal) using a
   different parser class, which led to annoyance and some weird bugs
3. (Not actually in this code, but in D7578) We can't distinguish between
   functions that should be expanded in text mode and those that shouldn't.
To solve these problems, I've created an all-encompassing table in symbols.js
that fixes 1. and 2., and should fix 3. once it's merged in. The table keeps
track of each of the functions and their class, font, and possible replacement,
and then Parser and buildTree do lookups in this table.

Also added the functions for the new_definitions functions, to show how easy it
is to add new functions.

Test Plan:
1. Run the normal tests, see they all pass
2. Run huxley, see none of the screenshots changed
3. See that things like the main page loads
4. See that the new functions look correctly with
   '\barwedge\veebar\odot\oplus\otimes\oslash\circledcirc
    \boxdot\bigtriangleup\bigtriangledown\dagger\diamond
    \star\triangleleft\triangleright'

Reviewers: alpert

Reviewed By: alpert

Differential Revision: http://phabricator.khanacademy.org/D7704
2014-03-26 01:10:10 -04:00