Make use of the crate's prelude to replace individual imports

This step was performed automatically with the following:

    #!/bin/bash

    set -eux

    files=()
    prelude_types=(
        c_char
        c_int
        c_longlong
        c_long
        c_short
        c_uchar
        c_uint
        c_ulonglong
        c_ulong
        c_ushort
        c_void
        intptr_t
        size_t
        ssize_t
        Clone
        Copy
        Option
    )

    # Generate a list of all files excluding `lib.rs` (since the prelude being
    # defined there makes string matching weird).
    while IFS= read -r -d '' file; do
        files+=("$file")
    done < <(find src -name '*.rs' -not -name 'lib.rs' -print0)

    for file in "${files[@]}"; do
        # If the file already has some sort of glob import, skip it
        if rg --pcre2 -q 'use crate::(?!prelude).*\*' "$file"; then
            continue
        fi

        # Core types always require the prelude to handle rustc-dep-of-std
        if rg -qU "(Option|Clone|Copy)" "$file"; then
            needs_prelude=1
        fi

        # If we use any types that are specified in the prelude then we will import it
        for ty in "${prelude_types[@]}"; do
            if rg -qU "(crate::$ty|use crate::(\{\n){,2}.*$ty)" "$file"; then
                needs_prelude=1
            fi
        done

        # Check if the prelude is needed and does not already exist; if so, add it
        if [ "${needs_prelude:-}" = "1" ] && ! rg -q "use crate::prelude::\*" "$file"; then
            perl -pi -0777 -e 's/(use crate::)/use crate::prelude::*;\n$1/' "$file"
        fi

        for ty in "${prelude_types[@]}"; do
            # If the type is defined in the current module, skip it
            if rg "type $ty =" "$file"; then
                continue
            fi

            export TY="$ty" # env for perl to use

            # Remove simple imports `use crate::ty;`
            perl -pi -0777 -e 's/use crate::($ENV{TY});//g' "$file"

            # Replace pathed `crate::ty`
            perl -pi -0777 -e 's/crate::($ENV{TY})\b/$1/g' "$file"

            # Remove the type if it is part of a group import
            perl -pi -0777 -e 's/(use crate::\{?(.*|(\n.*){,2}))\b$ENV{TY}\b,? ?/$1/g' "$file"
        done

        # For some reason, rustfmt doesn't trim leading newlines. Do so manually here.
        perl -pi -0777 -e 's/\A\n+//' "$file"

        rustfmt "$file"
    done

Author: tgross35

src/fuchsia/aarch64.rs

@@ -1,4 +1,5 @@
-use crate::{c_int, c_long, c_uint, c_ulong, c_ulonglong, c_ushort, off_t, size_t};
+use crate::off_t;
+use crate::prelude::*;
 
 pub type c_char = u8;
 pub type __u64 = c_ulonglong;

src/fuchsia/mod.rs

@@ -3,7 +3,7 @@
 //! More functions and definitions can be found in the more specific modules
 //! according to the platform in question.
 
-use crate::c_void;
+use crate::prelude::*;
 
 // PUB_TYPE
 

src/fuchsia/riscv64.rs

@@ -1,4 +1,5 @@
-use crate::{c_int, c_long, c_ulong, c_ulonglong, c_ushort, off_t};
+use crate::off_t;
+use crate::prelude::*;
 
 // From psABI Calling Convention for RV64
 pub type c_char = u8;

src/fuchsia/x86_64.rs

@@ -1,4 +1,5 @@
-use crate::{c_int, c_long, c_ulong, c_ulonglong, off_t, size_t};
+use crate::off_t;
+use crate::prelude::*;
 
 pub type c_char = i8;
 pub type wchar_t = i32;

src/hermit.rs

@@ -1,7 +1,5 @@
 //! Hermit C type definitions
 
-use crate::c_void;
-
 cfg_if! {
     if #[cfg(any(target_arch = "aarch64", target_arch = "riscv64"))] {
         pub type c_char = u8;

src/solid/mod.rs

@@ -2,7 +2,7 @@
 //!
 //! [SOLID]: https://solid.kmckk.com/
 
-use crate::c_void;
+use crate::prelude::*;
 
 pub type c_schar = i8;
 pub type c_uchar = u8;

src/unix/aix/mod.rs

@@ -1,7 +1,5 @@
-use crate::{
-    c_double, c_int, c_longlong, c_short, c_uchar, c_uint, c_ulonglong, c_ushort, c_void, intptr_t,
-    size_t, ssize_t,
-};
+use crate::c_double;
+use crate::prelude::*;
 
 pub type c_char = u8;
 pub type caddr_t = *mut c_char;

src/unix/aix/powerpc64.rs

@@ -1,7 +1,5 @@
-use crate::{
-    c_char, c_int, c_longlong, c_short, c_uint, c_ulonglong, c_ushort, c_void, off_t, size_t,
-    ssize_t,
-};
+use crate::off_t;
+use crate::prelude::*;
 
 pub type c_long = i64;
 pub type c_ulong = u64;

src/unix/bsd/apple/b32/mod.rs

@@ -1,6 +1,6 @@
 //! 32-bit specific Apple (ios/darwin) definitions
 
-use crate::{c_char, c_int, c_uchar, c_ushort};
+use crate::prelude::*;
 
 pub type c_long = i32;
 pub type c_ulong = u32;

src/unix/bsd/apple/b64/aarch64/mod.rs

@@ -1,4 +1,4 @@
-use crate::c_int;
+use crate::prelude::*;
 
 pub type boolean_t = c_int;
 pub type mcontext_t = *mut __darwin_mcontext64;