website(docs/runner-mode): change up docs for runner mode

website
sammyette 2022-12-13 15:14:30 -04:00
parent cd93e7f6fc
commit 16721713db
Signed by: sammyette
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1 changed files with 7 additions and 57 deletions
website/content/docs/features

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@ -7,61 +7,11 @@ menu:
parent: "Features"
---
Hilbish is *unique,* when interactive it first attempts to run input as
Lua and then tries shell script. But if you're normal, you wouldn't
really be using Hilbish anyway but you'd also not want this
(or maybe want Lua only in some cases.)
The "runner mode" of Hilbish is customizable via `hilbish.runnerMode`,
which determines how Hilbish will run user input. By default, this is
set to `hybrid` which is the previously mentioned behaviour of running Lua
first then going to shell script. If you want the reverse order, you can
set it to `hybridRev` and for isolated modes there is `sh` and `lua`
respectively.
You can also set it to a function, which will be called everytime Hilbish
needs to run interactive input. For example, you can set this to a simple
function to compile and evaluate Fennel, and now you can run Fennel.
You can even mix it with sh to make a hybrid mode with Lua replaced by
Fennel.
An example:
```lua
hilbish.runnerMode(function(input)
local ok = pcall(fennel.eval, input)
if ok then
return input, 0, nil
end
return hilbish.runner.sh(input)
end)
```
The `hilbish.runner` interface is an alternative to using `hilbish.runnerMode`
and also provides the sh and Lua runner functions that Hilbish itself uses.
A runner function is expected to return 3 values: the input, exit code, and an error.
The input return is there incase you need to prompt for more input.
If you don't, just return the input passed to the runner function.
The exit code has to be a number, it will be 0 otherwise and the error can be
`nil` to indicate no error.
## Functions
These are the "low level" functions for the `hilbish.runner` interface.
+ setMode(mode) > The same as `hilbish.runnerMode`
+ sh(input) -> input, code, err > Runs `input` in Hilbish's sh interpreter
+ lua(input) -> input, code, err > Evals `input` as Lua code
The others here are defined in Lua and have EmmyLua documentation.
These functions should be preferred over the previous ones.
+ setCurrent(mode) > The same as `setMode`, but works with runners managed
via the functions below.
+ add(name, runner) > Adds a runner to a table of available runners. The `runner`
argument is either a function or a table with a run callback.
+ set(name, runner) > The same as `add` but requires passing a table and
overwrites if the `name`d runner already exists.
+ get(name) > runner > Gets a runner by name. It is a table with at least a
run function, to run input.
+ exec(cmd, runnerName) > Runs `cmd` with a runner. If `runnerName` isn't passed,
the current runner mode is used.
Hilbish allows you to change how interactive text can be interpreted.
This is mainly due to the fact that the default method Hilbish uses
is that it runs Lua first and then falls back to shell script.
In some cases, someone might want to switch to just shell script to avoid
it while interactive but still have a Lua config, or go full Lua to use
Hilbish as a REPL. This also allows users to add alternative languages,
instead of either like Fennel.