Toml support

[zekth]

As told in #232 here is a draft of the TOML parser.

Added the documentation for the module.
Also the handling of Array Of Tables is not finished yet.

Questions:

• If a declaration is invalid do we skip it or we throw an Exception? Also an option strict could be added to handle both cases.

Note: @GrosSacASac deepAssign function has been added to util/deep_assign.ts

TOML specs

[zekth]

Does someone have opinion about questions?

cc @hayd @ry @j-f1 ?

[bartlomieju]

@zekth re: strict option, AFAIK TOML has no strict/non-strict mode, so IMHO it should throw exception when declaration is invalid.

[ry]

@zekth regarding your question - are there any existing libraries we can examine to copy behavior from?

[zekth]

@zekth are there any existing libraries we can examine to copy behavior from?

There are some in the TOML wiki, like:

• https://www.npmjs.com/package/@iarna/toml
• https://www.npmjs.com/package/ion-parser

[ry]

@zekth And how do they act on invalid declaration?

[zekth]

@ry directly throws exception. It was just an idea i had.

[zekth]

@ry you put it as ready for review, there is still a remaining type handling left. I'm working on it and on some speed optimisations. Do you want to merge it in this state or wait for the last type to be handled? No problem for me in both cases.

[ry]

@zekth I'm ok with merging now - looks useful as it is - but please complete that in follow up PRs

[zekth]

@ry ready to ship. Array of tables is handled now, also updated the doc for the warning. I'll do some optimisation in future PRs to fix the speed and remaining cases.

[ry]

Can you copy https://github.com/denoland/deno/blob/master/Cargo.toml to toml/testdata/deno_cargo.toml and check that this can parse it?

[zekth]

@ry Ready to merge.

[ry]

Nice work! This is great to have.
LGTM