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fix: add no_std support #62

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Merged
backwardspy merged 1 commit into from
Jan 4, 2026
Merged

fix: add no_std support #62

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18 changes: 9 additions & 9 deletions build.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -543,8 +543,8 @@ fn make_color_name_display_impl_tokens(sample_flavor: &Flavor) -> TokenStream {
}
});
quote! {
impl std::fmt::Display for ColorName {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
impl core::fmt::Display for ColorName {
fn fmt(&self, f: &mut core::fmt::Formatter) -> core::fmt::Result {
match self {
#(#match_arms),*
}
Expand All @@ -562,8 +562,8 @@ fn make_ansi_color_name_display_impl_tokens(sample_flavor: &Flavor) -> TokenStre
}
});
quote! {
impl std::fmt::Display for AnsiColorName {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
impl core::fmt::Display for AnsiColorName {
fn fmt(&self, f: &mut core::fmt::Formatter) -> core::fmt::Result {
match self {
#(#match_arms),*
}
Expand All @@ -581,8 +581,8 @@ fn make_ansi_color_pair_name_display_impl_tokens(sample_flavor: &Flavor) -> Toke
}
});
quote! {
impl std::fmt::Display for AnsiColorPairName {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
impl core::fmt::Display for AnsiColorPairName {
fn fmt(&self, f: &mut core::fmt::Formatter) -> core::fmt::Result {
match self {
#(#match_arms),*
}
Expand Down Expand Up @@ -695,7 +695,7 @@ fn make_color_name_fromstr_impl_tokens(sample_flavor: &Flavor) -> TokenStream {
})
.collect::<Vec<_>>();
quote! {
impl std::str::FromStr for ColorName {
impl core::str::FromStr for ColorName {
type Err = ParseColorNameError;

fn from_str(s: &str) -> Result<Self, Self::Err> {
Expand All @@ -718,7 +718,7 @@ fn make_ansi_color_name_fromstr_impl_tokens(sample_flavor: &Flavor) -> TokenStre
})
.collect::<Vec<_>>();
quote! {
impl std::str::FromStr for AnsiColorName {
impl core::str::FromStr for AnsiColorName {
type Err = ParseColorNameError;

fn from_str(s: &str) -> Result<Self, Self::Err> {
Expand All @@ -741,7 +741,7 @@ fn make_ansi_color_pair_name_fromstr_impl_tokens(sample_flavor: &Flavor) -> Toke
})
.collect::<Vec<_>>();
quote! {
impl std::str::FromStr for AnsiColorPairName {
impl core::str::FromStr for AnsiColorPairName {
type Err = ParseColorNameError;

fn from_str(s: &str) -> Result<Self, Self::Err> {
Expand Down
22 changes: 15 additions & 7 deletions src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -76,7 +76,11 @@
//! This adds [serde](https://crates.io/crates/serde) as a dependency.
//!
//! Example: [`examples/serde.rs`](https://github.com/catppuccin/rust/blob/main/examples/serde.rs)
use std::{fmt, marker::PhantomData, ops::Index, str::FromStr};
#![no_std]

extern crate alloc;

use core::{fmt, marker::PhantomData, ops::Index, str::FromStr};

include!(concat!(env!("OUT_DIR"), "/generated_palette.rs"));

Expand Down Expand Up @@ -272,6 +276,9 @@ mod _hex {

use crate::{Hex, Rgb};

use alloc::string::String;
use alloc::string::ToString;

impl Serialize for Hex {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
Expand Down Expand Up @@ -311,8 +318,8 @@ impl fmt::Display for FlavorName {
/// Error type for parsing a [`FlavorName`] from a string.
#[derive(Debug, PartialEq, Eq)]
pub struct ParseFlavorNameError;
impl std::error::Error for ParseFlavorNameError {}
impl std::fmt::Display for ParseFlavorNameError {
impl core::error::Error for ParseFlavorNameError {}
impl core::fmt::Display for ParseFlavorNameError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(
f,
Expand Down Expand Up @@ -515,8 +522,8 @@ impl<'a> IntoIterator for &'a Flavor {
/// Error type for parsing a [`ColorName`] from a string.
#[derive(Debug, PartialEq, Eq)]
pub struct ParseColorNameError;
impl std::error::Error for ParseColorNameError {}
impl std::fmt::Display for ParseColorNameError {
impl core::error::Error for ParseColorNameError {}
impl core::fmt::Display for ParseColorNameError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "invalid color identifier")
}
Expand Down Expand Up @@ -570,6 +577,7 @@ impl From<(f64, f64, f64)> for Hsl {
#[cfg(feature = "ansi-term")]
mod ansi_term {
use crate::{AnsiColor, Color};
use alloc::borrow::ToOwned;

impl Color {
/// Paints the given input with a color à la [ansi_term](https://docs.rs/ansi_term/latest/ansi_term/)
Expand All @@ -578,7 +586,7 @@ mod ansi_term {
input: I,
) -> ansi_term::ANSIGenericString<'a, S>
where
I: Into<std::borrow::Cow<'a, S>>,
I: Into<alloc::borrow::Cow<'a, S>>,
<S as ToOwned>::Owned: core::fmt::Debug,
{
ansi_term::Color::RGB(self.rgb.r, self.rgb.g, self.rgb.b).paint(input)
Expand All @@ -592,7 +600,7 @@ mod ansi_term {
input: I,
) -> ansi_term::ANSIGenericString<'a, S>
where
I: Into<std::borrow::Cow<'a, S>>,
I: Into<alloc::borrow::Cow<'a, S>>,
<S as ToOwned>::Owned: core::fmt::Debug,
{
ansi_term::Color::RGB(self.rgb.r, self.rgb.g, self.rgb.b).paint(input)
Expand Down