eacc | Minimalist but flexible Lexer/Parser tool in Python | Parser library
kandi X-RAY | eacc Summary
kandi X-RAY | eacc Summary
Python Eacc is a parsing tool it implements a flexible lexer and a straightforward approach to analyze documents. It uses Python code to specify both lexer and grammar for a given document. Eacc can handle succinctly most parsing cases that existing Python parsing tools propose to address. Documents are split into tokens and a token has a type when a sequence of tokens is matched it evaluates to a specific type then rematcned again against the existing rules. The types can be function objects it means patterns can be evaluated based on extern conditions. The fact of it being possible to have a grammar rule associated to a type and the type being variable in the context of the program it makes eacc useful for some text analysis problems. A document grammar is written mostly in an ambiguous manner. The parser has a lookahead mechanism to express precedence when matching rules. It is possible to extend the document grammar at the time it is being parsed. Such a feature is interesting to handle some edge cases. The parser also accept some special operators like Except, Only, Times etc. These operators are used to match sequences of tokens based on their token types and length.
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Top functions reviewed by kandi - BETA
- Build the chain
- Insert elem at index
- Pop the stack from the stack
- Generator for all matching patterns
- Builds an opex expression
- Append elem
- Get the next token from the EACC
- Return the next item in the list
- Create a PTree
- Update the tree
- Expand the symbol by expanding tokens
- Bind an op
- Create an exec node
- Return a TSeq of tokens
- Generate an index
- Generate tokens from data
- Build a regular expression to match the group
- Return the next token
- Add a handle to the registry
eacc Key Features
eacc Examples and Code Snippets
Community Discussions
Trending Discussions on eacc
QUESTION
targetSdkVersion: 30
In our App we have a feature, where we download files (mostly pdf) to the public download folder and start an intent afterwards to open it. Our code works fine for android apps with api >= 28 and >= 30. Just our app on Android 10 (sdkVersion 29) will try to open the document and instantly closes the activity that tried to display the pdf. The logcat shows following error:
...ANSWER
Answered 2022-Mar-17 at 13:44You should not use FileProvider to obtain an uri for your file.
You can get an uri from DownloadManager and use it to serve your file.
Code would be the same for all Android versions.
Not a single permission needed.
QUESTION
I'm trying to run a rails server in a docker image along with a mysql and vue frontend image. I'm using ruby 3 and rails 6. The mysql and frontend image both start without problems. However the rails images doesn't start. I'm on a Macbook Pro with MacOS Monterey and Docker Desktop 4.5.0
this is my docker-compose.yml:
...ANSWER
Answered 2022-Mar-16 at 14:38Remove the line - tmp:/usr/src/app/tmp on your Dockerfile.
You don't need to access temp files of your container I would say. 🙂
QUESTION
This is my GitHub Actions script to build a react project:
...ANSWER
Answered 2022-Mar-14 at 09:46I also facing the similar issue with it, you should tried to use actions/setup-node like this to fix it:
QUESTION
I am trying to read a CSV file, load its content to a spinner. I have given relevant permissions MANAGE_EXTERNAL_STORAGE, WRITE_EXTERNAL_STORAGE and READ_EXTERNAL_STORAGE to read a file from external storage. I have placed the CSV file in a directory requested permission on runtime. Also the file.exists() function return true but still unable to read csv file. Where am I going wrong?
Here is the error log:
...ANSWER
Answered 2022-Mar-07 at 07:05After File.exists() use File.canRead() before you act on the file.
This csv file is not created by your app.
Hence on Android 11 you are not the owner and although your app can check if the file exists it discovers with File.canRead() that the file is not accessable.
With MANAGE_EXTERNAL_STORAGE and the right runtime code your app can obtain access.
The right code would start an intent for Settings.ACTION_MANAGE_APP_ALL_FILES_ACCESS_PERMISSION.
QUESTION
My friend gave me a project with a dockerfile which seems to work just fine for him but I get a permission error.
...ANSWER
Answered 2022-Feb-17 at 19:16COPY normally copies things into the image owned by root, and it will create directories inside the image if they don't exist. In particular, when you COPY ./api/package.json ./api/, it creates the api subdirectory owned by root, and when you later try to run yarn install, it can't create the node_modules subdirectory because you've switched users.
I'd recommend copying files into the container and running the build process as root. Don't chown anything; leave all of these files owned by root. Switch to an alternate USER only at the very end of the Dockerfile, where you declare the CMD. This means that the non-root user running the container won't be able to modify the code or libraries in the container, intentionally or otherwise, which is a generally good security practice.
QUESTION
I have a NodeJS Express App that depends on MongoDB change streams. For them to be available, MongoDB has to be configured to run as a replica set (even if there is only one node in that set).
I'm working on Windows 10 pro.
I'm trying to dockerize this App, basing the MongoDB container off the official mongo:5 image.
For this to work, I want an automated way of initializing the DB as a replica set. Tutorials I've found rely on either execing into the container and running rs.initiate() from mongosh (or similar approaches), which is manual work I want to avoid. Or they use hacks like wait-for-it.sh as here.
I feel there must be a better solution, based somehow on the paragraph "Initializing a fresh instance", from the docs.
It describes that
When a container is started for the first time it will execute files with extensions
.shand.jsthat are found in/docker-entrypoint-initdb.d.
When exactly in the container lifecycle does that happen? After the container is initialized? Or after the DB is ready? Because this seems to be the perfect place for this initialization logic, which runs flawlessly when executed manually, from within the container.
However, placing
...ANSWER
Answered 2022-Feb-16 at 08:14I just made it work with a wild experiment. Means I simply left out the config in my call to rs.initiate(), from the JS script. For some reason, the script then runs successfully and change streams become available to my NodeJS backend.
I will post everything that's needed to run a MongoDB docker with change streams enabled:
QUESTION
when i type "npm run build:prod"
...ANSWER
Answered 2022-Feb-02 at 09:19glob error [Error: EACCES: permission denied, scandir '/root/.npm/_logs'] {
This means it is trying to read something on 'root' directory, something which always needs root access.
Try to run the command like this:
QUESTION
When I try to start a server in Express.js I getting this error:
ANSWER
Answered 2021-Nov-11 at 02:19There are cases where nothing is running on the port but some applications or even your code cannot run. The fix to this:
- Open PowerShell as an administrator.
- Stop winnat with:
net stop winnat - Start winnat again with:
net start winnat
QUESTION
I have been using Browsershot to retrieve some images from my website without any issues for months, but recently (past 1-2 weeks), the request has been timing out. Looking further into it, I've found that it has been consuming a large amount of cpu power while trying to execute the command.
As far as I can tell, this constant CPU drain will continue until I restart the server. I also only requested for one image to be made in this example, yet there are three processes of chrome. I'm not sure if that's irregular.
In order to make sure that it wasn't something on my website or possibly a setting causing this, I used a simple function call.
...ANSWER
Answered 2022-Jan-27 at 04:10I think I've finally figured it out.
From Browsershot's Github page, it recommends executing these commands to install puppeteer.
QUESTION
I am trying to use Selenium in Google Colab, but i get some errors when i try to run a Firefox instance. i followed this links:
- Selenium documentation here, i tried with the Driver Management Software but i got the error that says that was unable to find the binary location to Firefox, so i follow this other link , but i was unable to make it run
So i tried with the Hard Coded Location, but I got the error:
...ANSWER
Answered 2022-Jan-24 at 17:02This error message...
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