Migrate import statements and macros to Rust 2018.

libraries/cbor/fuzz/fuzz_targets/fuzz_target_cbor.rs

@@ -1,10 +1,8 @@
 #![no_main]
-#[macro_use]
-extern crate libfuzzer_sys;
 extern crate alloc;
-extern crate cbor;
 
 use alloc::vec::Vec;
+use libfuzzer_sys::fuzz_target;
 
 fuzz_target!(|data: &[u8]| {
     if let Ok(value) = cbor::read(data) {

libraries/cbor/src/lib.rs

@@ -18,7 +18,6 @@ extern crate alloc;
 #[cfg(feature = "std")]
 extern crate core;
 
-#[macro_use]
 pub mod macros;
 pub mod reader;
 pub mod values;

libraries/cbor/src/macros.rs

@@ -38,8 +38,7 @@ use core::iter::Peekable;
 ///
 /// ```rust
 /// # extern crate alloc;
-/// # #[macro_use]
-/// # extern crate cbor;
+/// # use cbor::destructure_cbor_map;
 /// #
 /// # fn main() {
 /// #     let map = alloc::collections::BTreeMap::new();
@@ -54,8 +53,6 @@ use core::iter::Peekable;
 ///
 /// ```rust
 /// # extern crate alloc;
-/// # #[macro_use]
-/// # extern crate cbor;
 /// #
 /// # fn main() {
 /// #     let mut map = alloc::collections::BTreeMap::<cbor::KeyType, _>::new();
@@ -71,7 +68,7 @@ macro_rules! destructure_cbor_map {
         // sorted - the behavior is unspecified if the keys are not sorted.
         // Therefore, in test mode we add assertions that the keys are indeed sorted.
         #[cfg(test)]
-        assert_sorted_keys!($( $key, )+);
+        $crate::assert_sorted_keys!($( $key, )+);
 
         use $crate::values::{IntoCborKey, Value};
         use $crate::macros::destructure_cbor_map_peek_value;
@@ -144,7 +141,7 @@ macro_rules! assert_sorted_keys {
                 k2,
             );
         }
-        assert_sorted_keys!($key2, $( $keys, )*);
+        $crate::assert_sorted_keys!($key2, $( $keys, )*);
     };
 }
 
@@ -227,7 +224,7 @@ macro_rules! cbor_array_vec {
     }};
 }
 
-#[cfg(test)]
+#[macro_export]
 macro_rules! cbor_true {
     ( ) => {
         $crate::values::Value::Simple($crate::values::SimpleValue::TrueValue)
@@ -248,7 +245,7 @@ macro_rules! cbor_null {
     };
 }
 
-#[cfg(test)]
+#[macro_export]
 macro_rules! cbor_undefined {
     ( ) => {
         $crate::values::Value::Simple($crate::values::SimpleValue::Undefined)
@@ -267,28 +264,28 @@ macro_rules! cbor_bool {
 #[macro_export]
 macro_rules! cbor_unsigned {
     ( $x:expr ) => {
-        cbor_key_unsigned!($x).into()
+        $crate::cbor_key_unsigned!($x).into()
     };
 }
 
 #[macro_export]
 macro_rules! cbor_int {
     ( $x:expr ) => {
-        cbor_key_int!($x).into()
+        $crate::cbor_key_int!($x).into()
     };
 }
 
 #[macro_export]
 macro_rules! cbor_text {
     ( $x:expr ) => {
-        cbor_key_text!($x).into()
+        $crate::cbor_key_text!($x).into()
     };
 }
 
 #[macro_export]
 macro_rules! cbor_bytes {
     ( $x:expr ) => {
-        cbor_key_bytes!($x).into()
+        $crate::cbor_key_bytes!($x).into()
     };
 }
 
@@ -296,7 +293,7 @@ macro_rules! cbor_bytes {
 #[macro_export]
 macro_rules! cbor_bytes_lit {
     ( $x:expr ) => {
-        cbor_bytes!(($x as &[u8]).to_vec())
+        $crate::cbor_bytes!(($x as &[u8]).to_vec())
     };
 }
 

libraries/cbor/src/reader.rs

@@ -13,6 +13,7 @@
 // limitations under the License.
 
 use super::values::{Constants, KeyType, SimpleValue, Value};
+use crate::{cbor_array_vec, cbor_bytes_lit, cbor_map_btree, cbor_text, cbor_unsigned};
 use alloc::collections::BTreeMap;
 use alloc::str;
 use alloc::vec::Vec;
@@ -214,6 +215,10 @@ impl<'a> Reader<'a> {
 #[cfg(test)]
 mod test {
     use super::*;
+    use crate::{
+        cbor_array, cbor_bytes, cbor_false, cbor_int, cbor_map, cbor_null, cbor_true,
+        cbor_undefined,
+    };
 
     #[test]
     fn test_read_unsigned() {

libraries/cbor/src/values.rs

@@ -239,6 +239,8 @@ where
 
 #[cfg(test)]
 mod test {
+    use crate::{cbor_key_bytes, cbor_key_int, cbor_key_text};
+
     #[test]
     fn test_key_type_ordering() {
         assert!(cbor_key_int!(0) < cbor_key_int!(23));

libraries/cbor/src/writer.rs

@@ -92,6 +92,10 @@ impl<'a> Writer<'a> {
 #[cfg(test)]
 mod test {
     use super::*;
+    use crate::{
+        cbor_array, cbor_array_vec, cbor_bytes, cbor_false, cbor_int, cbor_map, cbor_null,
+        cbor_text, cbor_true, cbor_undefined,
+    };
 
     fn write_return(value: Value) -> Option<Vec<u8>> {
         let mut encoded_cbor = Vec::new();

libraries/crypto/src/aes256.rs

@@ -14,6 +14,7 @@
 
 use super::util::{xor_block_16, Block16};
 use super::{Decrypt16BytesBlock, Encrypt16BytesBlock};
+use arrayref::{array_mut_ref, array_ref};
 
 /** A portable and naive textbook implementation of AES-256 **/
 type Word = [u8; 4];

libraries/crypto/src/ec/int256.rs

@@ -13,7 +13,9 @@
 // limitations under the License.
 
 use super::super::rng256::Rng256;
+use alloc::vec;
 use alloc::vec::Vec;
+use arrayref::{array_mut_ref, array_ref};
 use byteorder::{BigEndian, ByteOrder};
 use core::ops::{Add, AddAssign, Sub, SubAssign};
 use subtle::{self, Choice, ConditionallySelectable, ConstantTimeEq};

libraries/crypto/src/ec/point.rs

@@ -16,6 +16,10 @@ use super::exponent256::ExponentP256;
 use super::gfp256::GFP256;
 use super::int256::Int256;
 use super::montgomery::Montgomery;
+#[cfg(test)]
+use arrayref::array_mut_ref;
+#[cfg(feature = "std")]
+use arrayref::array_ref;
 use core::ops::Add;
 use subtle::{Choice, ConditionallySelectable, ConstantTimeEq};
 

libraries/crypto/src/ecdsa.rs

@@ -19,7 +19,12 @@ use super::ec::point::PointP256;
 use super::hmac::hmac_256;
 use super::rng256::Rng256;
 use super::{Hash256, HashBlockSize64Bytes};
+use alloc::vec;
 use alloc::vec::Vec;
+#[cfg(feature = "std")]
+use arrayref::array_ref;
+use arrayref::{array_mut_ref, mut_array_refs};
+use cbor::{cbor_bytes, cbor_map_options};
 use core::marker::PhantomData;
 
 #[derive(Clone, PartialEq)]
@@ -349,9 +354,6 @@ mod test {
     use super::super::rng256::ThreadRng256;
     use super::super::sha256::Sha256;
     use super::*;
-    extern crate hex;
-    extern crate ring;
-    extern crate untrusted;
 
     // Run more test iterations in release mode, as the code should be faster.
     #[cfg(not(debug_assertions))]

libraries/crypto/src/hmac.rs

@@ -13,6 +13,7 @@
 // limitations under the License.
 
 use super::{Hash256, HashBlockSize64Bytes};
+use arrayref::array_ref;
 use subtle::ConstantTimeEq;
 
 const BLOCK_SIZE: usize = 64;
@@ -71,7 +72,6 @@ fn xor_pads(ipad: &mut [u8; BLOCK_SIZE], opad: &mut [u8; BLOCK_SIZE], key: &[u8]
 mod test {
     use super::super::sha256::Sha256;
     use super::*;
-    extern crate hex;
 
     #[test]
     fn test_verify_hmac_valid() {

libraries/crypto/src/lib.rs

@@ -15,14 +15,7 @@
 #![cfg_attr(not(feature = "std"), no_std)]
 #![feature(wrapping_int_impl)]
 
-#[macro_use]
 extern crate alloc;
-extern crate subtle;
-#[macro_use]
-extern crate arrayref;
-extern crate byteorder;
-#[macro_use]
-extern crate cbor;
 
 pub mod aes256;
 pub mod cbc;

libraries/crypto/src/rng256.rs

@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+use arrayref::array_ref;
 use libtock_drivers::rng;
 
 // Lightweight RNG trait to generate uniformly distributed 256 bits.

libraries/crypto/src/sha256.rs

@@ -13,6 +13,7 @@
 // limitations under the License.
 
 use super::{Hash256, HashBlockSize64Bytes};
+use arrayref::{array_mut_ref, array_ref};
 use byteorder::{BigEndian, ByteOrder};
 use core::num::Wrapping;
 
@@ -210,7 +211,6 @@ impl Sha256 {
 #[cfg(test)]
 mod test {
     use super::*;
-    extern crate hex;
 
     #[test]
     fn test_choice() {

libraries/crypto/tests/aesavs.rs

@@ -15,11 +15,7 @@
 /// Test vectors for AES-ECB from NIST's validation suite.
 ///
 /// See also https://csrc.nist.gov/CSRC/media/Projects/Cryptographic-Algorithm-Validation-Program/documents/aes/AESAVS.pdf
-#[macro_use]
-extern crate arrayref;
-extern crate hex;
-extern crate regex;
-
+use arrayref::array_ref;
 use crypto::{aes256, Decrypt16BytesBlock, Encrypt16BytesBlock};
 use regex::Regex;
 use std::fs::File;