sp-std removal from substrate/primitives

substrate/primitives/arithmetic/Cargo.toml

@@ -26,7 +26,6 @@ num-traits = { version = "0.2.17", default-features = false }
 scale-info = { version = "2.10.0", default-features = false, features = ["derive"] }
 serde = { features = ["alloc", "derive"], optional = true, workspace = true }
 static_assertions = "1.1.0"
-sp-std = { path = "../std", default-features = false }
 
 [dev-dependencies]
 criterion = "0.4.0"
@@ -42,7 +41,6 @@ std = [
 	"scale-info/std",
 	"serde/std",
 	"sp-crypto-hashing/std",
-	"sp-std/std",
 ]
 # Serde support without relying on std features.
 serde = ["dep:serde", "scale-info/serde"]

substrate/primitives/arithmetic/src/biguint.rs

@@ -17,9 +17,10 @@
 
 //! Infinite precision unsigned integer for substrate runtime.
 
+use alloc::{vec, vec::Vec};
 use codec::{Decode, Encode};
+use core::{cell::RefCell, cmp::Ordering, ops};
 use num_traits::{One, Zero};
-use sp_std::{cell::RefCell, cmp::Ordering, ops, prelude::*, vec};
 
 // A sensible value for this would be half of the dword size of the host machine. Since the
 // runtime is compiled to 32bit webassembly, using 32 and 64 for single and double respectively
@@ -35,7 +36,7 @@ const SHIFT: usize = 32;
 const B: Double = Single::max_value() as Double + 1;
 
 static_assertions::const_assert!(
-	sp_std::mem::size_of::<Double>() - sp_std::mem::size_of::<Single>() == SHIFT / 8
+	core::mem::size_of::<Double>() - core::mem::size_of::<Single>() == SHIFT / 8
 );
 
 /// Splits a [`Double`] limb number into a tuple of two [`Single`] limb numbers.
@@ -438,9 +439,9 @@ impl BigUint {
 	}
 }
 
-impl sp_std::fmt::Debug for BigUint {
+impl core::fmt::Debug for BigUint {
 	#[cfg(feature = "std")]
-	fn fmt(&self, f: &mut sp_std::fmt::Formatter<'_>) -> sp_std::fmt::Result {
+	fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
 		write!(
 			f,
 			"BigUint {{ {:?} ({:?})}}",
@@ -450,7 +451,7 @@ impl sp_std::fmt::Debug for BigUint {
 	}
 
 	#[cfg(not(feature = "std"))]
-	fn fmt(&self, _: &mut sp_std::fmt::Formatter<'_>) -> sp_std::fmt::Result {
+	fn fmt(&self, _: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
 		Ok(())
 	}
 }

substrate/primitives/arithmetic/src/fixed_point.rs

@@ -26,17 +26,16 @@ use crate::{
 	PerThing, Perbill, Rounding, SignedRounding,
 };
 use codec::{CompactAs, Decode, Encode};
-use sp_std::{
+use core::{
 	fmt::Debug,
 	ops::{self, Add, Div, Mul, Sub},
-	prelude::*,
 };
 
 #[cfg(feature = "serde")]
 use serde::{de, Deserialize, Deserializer, Serialize, Serializer};
 
 #[cfg(all(not(feature = "std"), feature = "serde"))]
-use sp_std::alloc::string::{String, ToString};
+use alloc::string::{String, ToString};
 
 /// Integer types that can be used to interact with `FixedPointNumber` implementations.
 pub trait FixedPointOperand:
@@ -899,9 +898,9 @@ macro_rules! implement_fixed {
 			}
 		}
 
-		impl sp_std::fmt::Debug for $name {
+		impl ::core::fmt::Debug for $name {
 			#[cfg(feature = "std")]
-			fn fmt(&self, f: &mut sp_std::fmt::Formatter) -> sp_std::fmt::Result {
+			fn fmt(&self, f: &mut ::core::fmt::Formatter) -> ::core::fmt::Result {
 				let integral = {
 					let int = self.0 / Self::accuracy();
 					let signum_for_zero = if int == 0 && self.is_negative() { "-" } else { "" };
@@ -917,7 +916,7 @@ macro_rules! implement_fixed {
 			}
 
 			#[cfg(not(feature = "std"))]
-			fn fmt(&self, _: &mut sp_std::fmt::Formatter) -> sp_std::fmt::Result {
+			fn fmt(&self, _: &mut ::core::fmt::Formatter) -> ::core::fmt::Result {
 				Ok(())
 			}
 		}
@@ -933,13 +932,13 @@ macro_rules! implement_fixed {
 			}
 		}
 
-		impl sp_std::fmt::Display for $name {
-			fn fmt(&self, f: &mut sp_std::fmt::Formatter) -> sp_std::fmt::Result {
+		impl ::core::fmt::Display for $name {
+			fn fmt(&self, f: &mut ::core::fmt::Formatter) -> ::core::fmt::Result {
 				write!(f, "{}", self.0)
 			}
 		}
 
-		impl sp_std::str::FromStr for $name {
+		impl ::core::str::FromStr for $name {
 			type Err = &'static str;
 
 			fn from_str(s: &str) -> Result<Self, Self::Err> {
@@ -969,7 +968,7 @@ macro_rules! implement_fixed {
 			where
 				D: Deserializer<'de>,
 			{
-				use sp_std::str::FromStr;
+				use ::core::str::FromStr;
 				let s = String::deserialize(deserializer)?;
 				$name::from_str(&s).map_err(de::Error::custom)
 			}