Commit Graph

13 Commits

Author SHA1 Message Date
Yehuda Katz
8a29c9e6ab Migrated numerics to BigInt/BigDecimal
This commit migrates Value's numeric types to BigInt and BigDecimal. The
basic idea is that overflow errors aren't great in a shell environment,
and not really necessary.

The main immediate consequence is that new errors can occur when
serializing Nu values to other formats. You can see this in changes to
the various serialization formats (JSON, TOML, etc.). There's a new
`CoerceInto` trait that uses the `ToPrimitive` trait from `num_traits`
to attempt to coerce a `BigNum` or `BigDecimal` into a target type, and
produces a `RangeError` (kind of `ShellError`) if the coercion fails.

Another possible future consequence is that certain performance-critical
numeric operations might be too slow. If that happens, we can introduce
specialized numeric types to help improve the performance of those
situations, based on the real-world experience.
2019-09-01 21:00:30 -07:00
Andrés N. Robalino
ca0c6eaf58 This commit introduces a basic help feature. We can go to it
with the `help` command to explore and list all commands available.

Enter will also try to see if the location to be entered is an existing
Nu command, if it is it will let you inspect the command under `help`.

This provides baseline needed so we can iterate on it.
2019-08-31 19:06:11 -05:00
Yehuda Katz
138b5af82b Basic support for decimal numbers
This commit is more substantial than it looks: there was basically no
real support for decimals before, and that impacted values all the way
through.

I also made Size contain a decimal instead of an integer (`1.6kb` is a
reasonable thing to type), which impacted a bunch of code.

The biggest impact of this commit is that it creates many more possible
ways for valid nu types to fail to serialize as toml, json, etc. which
typically can't support the full range of Decimal (or Bigint, which I
also think we should support). This commit makes to-toml fallible, and a
similar effort is necessary for the rest of the serializations.

We also need to figure out how to clearly communicate to users what has
happened, but failing to serialize to toml seems clearly superior to me
than weird errors in basic math operations.
2019-08-30 21:05:32 -07:00
Odin Dutton
d71206ed9e Implement WholeStreamCommand for all remaining commands 2019-08-19 15:16:39 +10:00
Jonathan Turner
aadacc2d36 Merge master 2019-08-09 16:51:21 +12:00
Jonathan Turner
ae5b781159 More touchups to errors 2019-08-06 15:03:13 +12:00
Jonathan Turner
99671b8ffc Move more parts to tags and away from spans 2019-08-05 20:54:29 +12:00
Jonathan Turner
462f783fac initial change to Tagged<Value> 2019-08-01 13:58:42 +12:00
Jonathan Turner
a09361698e Update plugin protocol for begin, and create new sys plugin 2019-07-27 19:45:00 +12:00
Yehuda Katz
5a8e041a48 Tests pass! 2019-07-23 15:22:11 -07:00
Jonathan Turner
15507f00fc Introduce CallInfo, which abstracts args, name_span, and source_map 2019-07-20 14:27:10 +12:00
Jonathan Turner
2ed46046bd Cleanup for upcoming release 2019-07-17 07:10:25 +12:00
Jonathan Turner
b07e1ccbf7 Add missing file 2019-07-16 16:05:38 +12:00