ast | development add-on to the pest parsing library | Parser library
kandi X-RAY | ast Summary
kandi X-RAY | ast Summary
This is an in-development add-on to the pest parsing library. Pest-ast provides a structured manner to go from the "dynamically typed" Pest Parse Tree to a strongly typed (Abstract) Syntax Tree, as well as a derive to do so automatically. In the future, it's planned to optionally additionally check the source grammar to statically prevent issues that are currently detected at runtime. In the future , pest-ast may provide a way of defining grammar directly on the AST nodes.
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Trending Discussions on ast
QUESTION
This is a question about traversing mutually recursive data types. I am modeling ASTs for a bunch of mutually recursive datatypes using Indexed Functor as described in this gist here. This works well enough for my intended purposes.
Now I need to transform my data structure with data flowing top-down. here is an SoF question asked in the context of Functor where it's shown that the carrier of the algebra can be a function that allows one to push data down during traversal. However, I am struggling to use this technique with Indexed Functor. I think my data type needs to be altered but I am not sure how.
Here is some code that illustrates my problem. Please note, that I am not including mutually recursive types or multiple indexes as I don't need them to illustrate the issue.
setDepth should change every (IntF n) to (IntF depth). The function as written won't type check because kind ‘AstIdx -> *’ doesn't match ‘Int -> Expr ix’. Maybe I am missing something but I don't see a way to get around this without relaxing the kind of f to be less restrictive in IxFunctor but that seems wrong.
Any thoughts, suggestions or pointers welcome!
...ANSWER
Answered 2022-Apr-01 at 22:53I'm assuming here that you're trying to set each IntF
node to its depth within the tree (like the byDepthF
function from the linked question) rather than to some fixed integer argument named depth
.
If so, I think you're probably looking for something like the following:
QUESTION
I'm trying to install eth-brownie using 'pipx install eth-brownie' but I get an error saying
...ANSWER
Answered 2022-Jan-02 at 09:59I used pip install eth-brownie and it worked fine, I didnt need to downgrade. Im new to this maybe I could be wrong but it worked fine with me.
QUESTION
I have yaml
pipeline running a build in Azure Devops. The Npm@1
task has started failing this morning. npm install
works locally with npm version 6.14.5 and it's all green lights on npm Status.
ANSWER
Answered 2021-Dec-02 at 13:14I still don't know why this started failing all of a sudden but I have resolved the problem by updating node-sass
to version 6.0.1
.
QUESTION
It has been almost a year since I saw Jonathan Worthington presenting the new RakuAST in the YouTube video A Raku API to Raku programs the journey so far from TRC 2021. In the video, he showed that we could dump this new RakuAST using RAKUDO_RAKUAST=1
like this:
ANSWER
Answered 2022-Mar-08 at 11:46You need to checkout and build the rakuast
branch of Rakudo. The RakuAST work is still very much in progress, and has not landed in the main branch let.
QUESTION
when i try to install community version of Orocommerce, but i whem excecute next command: composer install --prefer-dist --no-dev
after few minutes process stop and return next error:
ANSWER
Answered 2022-Mar-05 at 14:55Thanks, the error happens for having Node 16. With NodeJs 14.0 working orocommerce 4.1.1!
QUESTION
Apparently, discord bots can have mobile status as opposed to the desktop (online) status that one gets by default.
After a bit of digging I found out that such a status is achieved by modifying the IDENTIFY packet
in discord.gateway.DiscordWebSocket.identify
modifying the value of $browser
to Discord Android
or Discord iOS
should theoretically get us the mobile status.
After modifying code snippets I found online which does this, I end up with this :
...ANSWER
Answered 2022-Feb-07 at 23:03The following works by subclassing the relevant class, and duplicating code with the relevant changes. We also have to subclass the Client
class, to overwrite the place where the gateway/websocket class is used. This results in a lot of duplicated code, however it does work, and requires neither dirty monkey-patching nor editing the library source code.
However, it does come with many of the same problems as editing the library source code - mainly that as the library is updated, this code will become out of date (if you're using the archived and obsolete version of the library, you have bigger problems instead).
QUESTION
I was trying to consume a soap service in python with zeep. I've consumed several soap services with zeep as well. But for a particular soap service, a weird response in returning, unlike a well-organized dictionary.
My python code is below:
...ANSWER
Answered 2022-Jan-31 at 05:44Your requested WSDL URL contains https protocol and you are calling http request.
Please call this url : https://trx.*********ast.co.id/Webservice/b******ervice?wsdl
QUESTION
I was looking at the vec![]
macro implementation in Rust and noticed it uses the __rust_force_expr!
macro. This is the implementation of the latter:
ANSWER
Answered 2021-Dec-18 at 13:05It doesn't have any result on how the macro is used, it only serves to improve the quality of error messages when the macro is used incorrectly by telling the compiler that the output of the macro is always a single expression, not an item or multiple expressions.
The specific error that this was added to improve was for using vec![]
in a pattern match, which is invalid (you can't structually match on a Vec
):
QUESTION
Hi I have a bunch of json-ish strings stored in columns as shown in 'a', and I would like to extract the 'Form' field. I would like to do this per row, for all columns. I can get it to work per cell with the code below, but I am having trouble getting it to work on a dataframe scale. any advice is welcomed
...ANSWER
Answered 2021-Dec-17 at 14:09Use DataFrame.apply
for processing per columns, then convert each values to dictionary and select by Series.str.get
, last rename
columns:
QUESTION
I want to do some minor edits to core eslint rules, e.g. array-bracket-newline
, or indent
. These rules often depend on utilities inside eslint
, most commonly ast-utils
. So far, i've used a plugin, added the modified rules there, and did a require('eslint/lib/rules/utils/ast-utils')
, as eslint
is a peer-dependency anyways.
Since https://github.com/eslint/eslint/commit/24c9f2ac57efcd699ca69695c82e51ce5742df7b this is no longer possible, as an exports
directive was added to the package.json
. What is the usual method for changing behavior of core eslint rules nowadays?
- copying out all dependencies would be possible, but both tedious, and duplicating code for no reason (i'd have to trace all the dependencies, and rip out chunks of eslint's code).
- forking
eslint
as a whole seems unclean, as there are a lot of other parts, which depend on it (starting from eslint-plugins, over to vscode extensions, yarn sdks, ...). Each one would need to be changed, or some very dirty rename used, in which the fork pretends to be the original (accident waiting to happen). - yarn package patching the
exports
away seems really dirty.
Is there some clean way?
Edit: my current best idea is forking eslint
, removing the exports
, and then using require('eslint-fork/lib/rules/utils/ast-utils')
on the fork. This means i need an extra eslint
copy for no real reason, but it's for linting, and a bit of disk space isn't important.
ANSWER
Answered 2021-Nov-26 at 17:09It is possible to require unexported files by their full path, i.e.:
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Install ast
Rust is installed and managed by the rustup tool. Rust has a 6-week rapid release process and supports a great number of platforms, so there are many builds of Rust available at any time. Please refer rust-lang.org for more information.
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