feat: Adding support for no_std environments for env_filter
#378
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epage
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Aug 22, 2025
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| #[cfg(not(feature = "std"))] | ||
| impl core::error::Error for ParseError {} |
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This makes the lack of std require a higher MSRV
epage
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Aug 22, 2025
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| pub(crate) fn new(spec: &str) -> Result<Self, String> { | ||
| Ok(Self { | ||
| inner: spec.to_string(), | ||
| }) | ||
| } | ||
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| pub fn is_match(&self, s: &str) -> bool { | ||
| pub(crate) fn is_match(&self, s: &str) -> bool { |
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Can you split this out into a separate commit?
epage
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Aug 22, 2025
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| use alloc::string::{String, ToString}; | ||
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| use core::fmt; |
epage
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| use alloc::borrow::ToOwned; | ||
| use alloc::format; | ||
| use alloc::string::String; | ||
| use alloc::vec::Vec; | ||
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| use core::fmt::{Display, Formatter}; | ||
| use log::LevelFilter; | ||
| use std::error::Error; | ||
| use std::fmt::{Display, Formatter}; | ||
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| use crate::Directive; | ||
| use crate::FilterOp; |
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If we're changing grouping, could you do
use {core,alloc,std}
use third-party
use crate
epage
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Aug 22, 2025
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| use alloc::borrow::ToOwned; | ||
| use alloc::string::ToString; | ||
| use alloc::vec::Vec; | ||
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| use core::fmt; | ||
| use core::mem; | ||
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| use log::{LevelFilter, Metadata, Record}; | ||
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| use crate::enabled; |
epage
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Aug 22, 2025
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| log = { version = "0.4.8", default-features = false } | ||
| regex = { version = "1.0.3", optional = true, default-features = false, features = ["std", "perf"] } |
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Seems like this belongs in the previous comit, could you move it there?
epage
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Aug 22, 2025
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refactor(filter): Add support for no_std environments
Mind fixing your commit type?
A refactor, by definition, has no user facing changes while this does. I would use feat
Pull Request Test Coverage Report for Build 17143312963Details
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Using
env_loggerin ano_stdenvironment may not seem useful at first. However, theenv_filtercrate is very convenient for defining complex filters that can then be implemented by a customno_std-compatible logger.This approach leverages the convenience developers are already familiar with from
env_logger, while enabling the same flexibility inno_stdcontexts with other logging backends.