Improve debugger visualization for `ndarray` arrays using `#[debugger_visualizer]`
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评估
调研方向
Start by reviewing discussions in issues #827 and #366, then read the Rust Reference debugger attribute documentation and the Rust Compiler Development Guide section on supported debuggers. Evaluate whether embedding Python pretty-printers and .natvis files with #[debugger_visualizer] is feasible for ndarray arrays. Done means a decided approach for official debugger visualization support.
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描述
This issue has been discussed in #827 and #366, but it remains partially unresolved.
Problem and Previous solution
When debugging ndarray arrays in VSCode, their display is often not human-readable:
However, with this custom formatter.py file (along with some additional configuration), the display becomes much more readable:
(This solution was originally provided by @MartinRJDagleish in this comment)
More Discussion
The #[debugger_visualizer] attribute has been stabalized in Rust 1.71.0 for 2 years, which can be used to embed a debugger visualizer file into the debug information. This means we can write pretty-printer files (Python script, for GDB and LLDB) and .natvis files (for Windbg) for ndarray arrays, and embed them into the Rust code using the attribute, to provide official support for debugger visualization of ndarray arrays.
I'm not sure whether it is a feasible approach, but I'm glad to have a discussion.
Relevant Links
-
The Rust Reference: Some examples to use
#[debugger_visualizer]attribute. -
Rust Compiler Development Guide: Describes the underlying implement in Rust compiler.
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