Difference between revisions of "WebAssembly"

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(List RTL units.)
(Add links to demos implemented in Pascal.)
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== WebAssembly ==
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= WebAssembly =
  
 
WebAssembly (abbreviated Wasm) is a binary instruction format for a stack-based virtual machine. Wasm is designed as a portable compilation target for programming languages, enabling deployment on the web for client and server applications. See the [https://webassembly.org WebAssembly] website for more information.
 
WebAssembly (abbreviated Wasm) is a binary instruction format for a stack-based virtual machine. Wasm is designed as a portable compilation target for programming languages, enabling deployment on the web for client and server applications. See the [https://webassembly.org WebAssembly] website for more information.
  
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== Free Pascal and WebAssembly ==
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= Free Pascal and WebAssembly =
  
 
FPC supports two Wasm compilation targets: WASI and embedded. See [[WebAssembly/Compiler]] on how to build and install FPC for Wasm.
 
FPC supports two Wasm compilation targets: WASI and embedded. See [[WebAssembly/Compiler]] on how to build and install FPC for Wasm.
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Overall, FPC's Wasm support adds to FPC's already [https://www.freepascal.org/ extensive list of compilation targets], potentially allowing Pascal programs to run in even more environments than they already do.
 
Overall, FPC's Wasm support adds to FPC's already [https://www.freepascal.org/ extensive list of compilation targets], potentially allowing Pascal programs to run in even more environments than they already do.
  
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==See Also==
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= Demos =
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== Running in Web Browsers ==
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In each demo, the driver program is transpiled from Pascal to Javascript using pas2js, and the worker program/library is compiled from Pascal to Wasm using FPC WASI target.
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* [https://www.freepascal.org/~michael/pas2js-demos/wasienv/terminal/ Simulated terminal input and output]
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* [https://www.freepascal.org/~michael/pas2js-demos/wasienv/canvas/ Drawing on HTML canvas]
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* [https://github.com/PierceNg/wasm-demo/ Conway's Game of Life]
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== With Standalone Runtime ==
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Free Pascal's source tree contains examples embedding the [https://github.com/bytecodealliance/wasmtime wasmtime] standalone Wasm runtime in Pascal host programs.
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=See Also=
 
* [[WebAssembly/Compiler]] - getting the compiler
 
* [[WebAssembly/Compiler]] - getting the compiler
 
* [[WebAssembly/Roadmap]]
 
* [[WebAssembly/Roadmap]]

Revision as of 17:02, 5 April 2022

WebAssembly

WebAssembly (abbreviated Wasm) is a binary instruction format for a stack-based virtual machine. Wasm is designed as a portable compilation target for programming languages, enabling deployment on the web for client and server applications. See the WebAssembly website for more information.

Free Pascal and WebAssembly

FPC supports two Wasm compilation targets: WASI and embedded. See WebAssembly/Compiler on how to build and install FPC for Wasm.

WASI - the WebAssembly System Interface - defines an API for operating system-like features, including files and filesystems, network sockets, clocks and random numbers. These features, when implemented in web browsers as well as standalone Wasm runtimes on desktops, servers, and serverless cloud computing units, are available to Pascal programs and libraries compiled by FPC to Wasm for the WASI target.

The FPC WASI RTL consists of these units:

  • fcl-base
  • fcl-css
  • fcl-hash
  • fcl-registry
  • fcl-sound
  • fcl-stl
  • fcl-xml
  • hash
  • regexpr
  • rtl
  • rtl-extra
  • rtl-objpas
  • rtl-unicode
  • tplylib

The FPC Wasm embedded RTL, in line with FPC's support for embedded targets, consists of these units:

  • rtl
  • rtl-extra
  • tplylib

With respect to the embedded target, there are presently (2022) early efforts to create Wasm-related standards for cross-device/platform/architecture embedded applications.

Overall, FPC's Wasm support adds to FPC's already extensive list of compilation targets, potentially allowing Pascal programs to run in even more environments than they already do.

Demos

Running in Web Browsers

In each demo, the driver program is transpiled from Pascal to Javascript using pas2js, and the worker program/library is compiled from Pascal to Wasm using FPC WASI target.

With Standalone Runtime

Free Pascal's source tree contains examples embedding the wasmtime standalone Wasm runtime in Pascal host programs.

See Also

Retrieved from "http://wiki.freepascal.org/index.php?title=WebAssembly&oldid=151622"