wasm | WebAssembly decoder & disassembler library
kandi X-RAY | wasm Summary
kandi X-RAY | wasm Summary
Python module capable of decoding and disassembling WebAssembly modules and bytecode, according to the MVP specification of the WASM binary format. As there is no official text format defined yet, the text format implemented doesn’t correspond to any existing definition and is a simple mnemonic op1, op2, ... format. Functions are formatted in a way similar to how Google Chrome does in the debug console.
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Top functions reviewed by kandi - BETA
- Command - line entry point
- Format a function body
- Decode a module
- Format an instruction
- Decode bytecode into Instructions
- Return the decoder meta
- Format a language type
- Extract the offsets from raw binary data
- Parse bytecode from byte string
- Extract bits from raw data
- Creates a shortcut for the given klass
- Convert the value to a string
wasm Key Features
wasm Examples and Code Snippets
Community Discussions
Trending Discussions on wasm
QUESTION
I have some rust code that compiles to web assembly using wasm-pack
and wasm-bindgen
. I want to call into this code from a web worklet/worker. The entire app should eventually be just one single *.js file, with everything else inlined.
This is what I imagine my build process to look like:
- Use
wasm-pack
to compile the rust code to *.wasm and *.js bindings (this step works just fine) - Use
webpack
to build a self-contained *.js file that I can load as a worklet/worker. The *.wasm must be included in this file. (this step fails) - Use
webpack
again to build my final app/package, inlining the worklet/worker file from step 2. (this step works just fine)
My problem is in step 2: I can't make webpack
inline the *.wasm into the worklet/worker file.
I tried this in my webpack config:
ANSWER
Answered 2022-Mar-30 at 07:38- Build the wasm itself:
cargo build --target=wasm32/unknown/unknown
- Build the JS-bindings:
wasm-bindgen --out-dir=dist --target=web --omit-default-module-path my-wasm-package.wasm
. - Consume the wasm in your worklet script like this:
QUESTION
I am setting up a Storybook with RemixJS. I got the following error when trying to import a component
...ANSWER
Answered 2022-Mar-11 at 12:09Depending on the webpack version you are using to build your Storybook you need to add fs
, stream
and other Node core module used by Remix packages.
As a rule of thumb you can use the list from Webpack documentation on resolve.fallback
here.
If you are using Stroybook with Webpack 4 the config should look like :
QUESTION
If I create a new Blazor WASM app, out of the box I can use Hot Reload by running dotnet watch run
in a terminal window. This will launch a browser window, and any changes I make will update in the browser automatically.
However, if I start my app in Visual Studio with the debugger attached (F5), I don't get any hot reload functionality. When I make a change, Visual Studio shows a message in the bottom left that says Code Changes were applied successfully
, but the browser does not refresh. If I refresh the browser manually, I still do not see my changes.
I have "Hot Reload on Save" checked. Pressing the new Hot Reload button doesn't seem to do anything.
The browser refresh script is injected into my html.
I am using Visual Studio 2022 Version 17.0.0 Preview 7.0, and dotnet 6 RC 2 (6.0.0-rc.2.21480.10).
Is it not possible to use Hot Reload while debugging a Blazor WASM app, or am I missing something?
...ANSWER
Answered 2022-Mar-02 at 17:39This bug has been fixed as of version 17.1 of Visual Studio 2022.
PosterityThis feature is currently unsupported when using the debugger in WebAssembly apps. According to Microsoft:
*In Visual Studio 2022 GA release Hot Reload support for Blazor WebAssembly when using the Visual Studio debugger isn’t enabled yet. You can still get Hot Reload If you start your app through Visual Studio without the debugger, and we are working to resolve this in the next Visual Studio update.
According to Microsoft, this will be fixed in the 17.1 release of VS 2022.
The fix will be included in the 17.1 release.
The latest preview version of Visual Studio 2022 (17.1.0 Preview 2 released Jan 5, 2022) contains the fix for this. I tested this personally and verified it's working. Note that you will still need to wait for 17.1 if you don't want to use the preview channel.
QUESTION
Let's consider an example import object that looks like this:
...ANSWER
Answered 2022-Feb-23 at 09:33I found the solution myself, and as there seems to be no good information elsewhere in the internet, I want to share my solution for anybody, who has similar issues.
For importing the JavaScript-Function, it is important to act like the function was synchronous, although it is asynchronous. The reason for that is, that async functions in Rust are only executed, when an executor or await is used. Therefore, the async-JS-Function, which under the hood is a synchronous function that returns a Promise can be used synchronously. The returned promise can then be called explicitly.
The import section will look like the following:
QUESTION
I want to be able to call C# code from JavaScript. The mono project used to have a WASM SDK that you could download from their old Jenkins server, but that is no longer public. Existing docs tend to point toward those builds. The Azure Devops builds do not include this SDK. A few messages I've seen on their Github account indicate that they are now focusing on the .NET 6 for WASM. I do not wish to use the Blazor components. Is there a way in .NET 6 to build a minimally sized WASM binary without the Blazor UI?
...ANSWER
Answered 2021-Aug-26 at 01:25Yes it's absolutely possible. Blazor does not have a monopoly on C#/WASM and it's far from clear that it's going to wind up being the best long term option (and a lot of evidence it's not).
I recommend starting with the Uno WASM Bootstrap. https://github.com/unoplatform/Uno.Wasm.Bootstrap
QUESTION
I am creating spec using ./polkadot build-spec --disable-default-bootnode --dev
(I am running version 0.9.8-3a10ee63c-x86_64-linux-gnu
)
spec generated using above command contains code
field. My understanding is that this field contains wasm bytes. However, these bytes do not seem appropriate.
In a .wasm
file, first 4 bytes are supposed to be magic number (\0asm
here), next four bytes are supposed to be version of wasm spec, and probably some other pattern after that. I do not see those things in these wasm bytes.
Is it a bug? Does it use some encoding? Basically, how do I get wasm bytes from the spec?
I have posted JSON of spec here https://gist.github.com/kishansagathiya/b38b8f06964c8cb101ccab7fbefa428d
...ANSWER
Answered 2022-Jan-19 at 18:23Wasm can be pretty hefty in its raw form. This leads to problems, for example, when upgrading from one version of the Substrate Runtime (the wasm file) to another. This is because the upgrade should fit into a block body which is capped at ≈4 MiB. A recent Polkadot wasm blob is 4.7 MiB. If you apply the zstd compression to the same file it would go down to 1.1 MiB.
That was a rationale for us to introduce compression for the wasm blobs. To distinguish between the compressed and uncompressed wasm, we introduced our own magic number. That's the magic you see there.
This logic is pretty much encapsulated in sp-maybe-compressed-blob crate.
QUESTION
So I'm currently trying to deploy a router smart contract. I've been building it through erdpy contract build
, which has been successful (I'm on rust nightly tool chain as the Smart contract needs it). And I am now trying to deploy it, but I can't manage to do it. I keep having a 400 BadRequest
from https://devnet-api.elrond.com/transaction/send
.
Here are the logs from the deployment:
...ANSWER
Answered 2022-Jan-05 at 10:47I have you tried to deploy with the argument --verbose
?
That should be something like that (not sure of the syntax because I am on phone)
erdpy --verbose contract deploy
QUESTION
Hey @all I was playing with WebAssembly Studio and created an empty Rust project.
In my Rust code, I'm returning the pointer and the length for my "Hello World" string. Compiling worked fine, but I was expecting the resulting WASM to have a function returning two i32. But I found a function taking one i32 and returning nothing.
Why is the function not having the signature fn () -> (i32,i32) ?
How am I supposed to extract the two values from the WASM module? (Using Rust-wasmtime)
Below you can find the code snippets I'm talking about. Thanks in advance!
...ANSWER
Answered 2022-Jan-18 at 09:48WebAssembly got the ability to return multiple values just recently. The compiler used doesn't seem to support this yet or doesn't use it for compatibility reasons, i.e. for runtimes that don't know this feature yet.
Therefore, the compiler rewrites the code as follows:
QUESTION
To make it easy to visualize, below is the following Record lookup table.
I just can't seem to find anywhere online where it tells you which of these are supposed to also contain charset=utf-8
.
Should I just assume it's anything similar to text?
Take a look:
...ANSWER
Answered 2022-Jan-10 at 05:00MDN Says:
For example, for any MIME type whose main type is text, you can add the optional charset parameter to specify the character set used for the characters in the data. If no charset is specified, the default is ASCII (US-ASCII) unless overridden by the user agent's settings. To specify a UTF-8 text file, the MIME type text/plain;charset=UTF-8 is used.
So, for anything based on text/...
you can optionally add the charset.
https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types#structure_of_a_mime_type
The following update to contentType()
function demonstrates one solution.
QUESTION
Followed Dynamically set the culture from the Accept-Language header to localize my blazor wasm app.
WebUI.csproj
...ANSWER
Answered 2022-Jan-06 at 10:47You only specified an English localization file: Shared.en.resx
.
When you specify @loc["countries"]
in the component, it attempts to use the browser locale to translate the text "countries".
The localizer looks for a resource file Shared.de.resx
but that doesn't exist, so it defaults to the base translation, in this case English.
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Vulnerabilities
No vulnerabilities reported
Install wasm
You can use wasm like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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