From 928ce7f0a4ee0c5ca3edd7fe2611592ad36e5764 Mon Sep 17 00:00:00 2001
From: Meadow Liu <meadowsys@kiwin.gay>
Date: Sun, 8 Sep 2024 01:19:05 -0700
Subject: [PATCH] alloc, core, std, and a quite expansive prelude?

---
 Cargo.toml        |   2 -
 src/lib.rs        |   7 +++-
 src/prelude.rs    | 102 ++++++++++++++++++++++++++++++++++++++++++++++
 src/rust_alloc.rs |   4 ++
 src/rust_core.rs  |   4 ++
 src/rust_std.rs   |   4 ++
 6 files changed, 119 insertions(+), 4 deletions(-)
 create mode 100644 src/rust_alloc.rs
 create mode 100644 src/rust_core.rs
 create mode 100644 src/rust_std.rs

diff --git a/Cargo.toml b/Cargo.toml
index 6391c8fe1..50890e4eb 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -66,8 +66,6 @@ wiwiwiwiwi = { path = "macro", version = "=0.10.0" }
 # zeroize = { version = "1.7.0", optional = true }
 
 [features]
-alloc = []
-std = []
 
 [build-dependencies]
 # cc = "1.1.6"
diff --git a/src/lib.rs b/src/lib.rs
index fb27378de..4d60fd6aa 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,4 +1,3 @@
-#![cfg_attr(not(feature = "std"), no_std)]
 #![no_implicit_prelude]
 
 // TODO: review these
@@ -26,7 +25,11 @@ compile_error!("16-bit platforms are not supported yet (but please do file an is
 #[cfg(any(doc, docsrs, kiwingay))]
 #[doc = include_str!("../CHANGELOG.md")]
 pub mod _changelog {}
-// pub mod prelude;
+pub mod prelude;
+
+pub mod rust_alloc;
+pub mod rust_core;
+pub mod rust_std;
 
 // pub mod clone;
 // pub mod compare;
diff --git a/src/prelude.rs b/src/prelude.rs
index 6961ee20c..57efb4761 100644
--- a/src/prelude.rs
+++ b/src/prelude.rs
@@ -1 +1,103 @@
 //! Prelude module, exporting commonly-used items
+
+use crate::rust_std;
+
+pub use rust_std::{
+	assert,
+	assert_eq,
+	assert_ne,
+	debug_assert,
+	debug_assert_eq,
+	debug_assert_ne,
+	print,
+	println,
+	eprint,
+	eprintln,
+	cfg,
+	dbg,
+	unreachable,
+	concat,
+	compile_error,
+	file,
+	line,
+	column,
+	format,
+	format_args,
+	stringify
+};
+pub use rust_std::borrow::{
+	Cow,
+	ToOwned
+};
+pub use rust_std::convert::{
+	From,
+	Into,
+	TryFrom,
+	TryInto,
+	AsMut,
+	AsRef,
+	identity
+};
+pub use rust_std::future::{
+	Future,
+	IntoFuture
+};
+pub use rust_std::iter::{
+	Iterator,
+	FromIterator,
+	IntoIterator,
+	DoubleEndedIterator,
+	ExactSizeIterator,
+	Extend
+};
+pub use rust_std::marker::{
+	Send,
+	Sync,
+	Sized,
+	Unpin,
+	PhantomData,
+	PhantomPinned
+};
+pub use rust_std::mem::{
+	size_of,
+	size_of_val,
+	align_of,
+	align_of_val,
+	drop,
+	forget,
+	replace,
+	swap,
+	take,
+	transmute,
+	transmute_copy,
+	zeroed
+};
+pub use rust_std::ops::{
+	Drop,
+	Fn,
+	FnMut,
+	FnOnce
+};
+pub use rust_std::option::{
+	Option,
+	Option::Some,
+	Option::None
+};
+pub use rust_std::result::{
+	Result,
+	Result::Ok,
+	Result::Err
+};
+pub use rust_std::string::{
+	String,
+	ToString
+};
+pub use rust_std::vec::Vec;
+
+#[macro_export]
+macro_rules! panic {
+	($($stuff:tt)*) => {
+		$crate::rust_std::panic!($($stuff)*)
+	}
+}
+pub use panic;
diff --git a/src/rust_alloc.rs b/src/rust_alloc.rs
new file mode 100644
index 000000000..c6321e571
--- /dev/null
+++ b/src/rust_alloc.rs
@@ -0,0 +1,4 @@
+extern crate alloc as _alloc;
+
+#[doc(inline)]
+pub use _alloc::*;
diff --git a/src/rust_core.rs b/src/rust_core.rs
new file mode 100644
index 000000000..00b15472b
--- /dev/null
+++ b/src/rust_core.rs
@@ -0,0 +1,4 @@
+extern crate core as _core;
+
+#[doc(inline)]
+pub use _core::*;
diff --git a/src/rust_std.rs b/src/rust_std.rs
new file mode 100644
index 000000000..7c7881139
--- /dev/null
+++ b/src/rust_std.rs
@@ -0,0 +1,4 @@
+extern crate std as _std;
+
+#[doc(inline)]
+pub use _std::*;