Fixed unused imports and deprecated pattern warnings

Cargo.toml

@@ -4,6 +4,7 @@ name = "unicode-segmentation"
 version = "1.7.1"
 authors = ["kwantam <[email protected]>", "Manish Goregaokar <[email protected]>"]
 
+edition = "2018"
 homepage = "https://github.com/unicode-rs/unicode-segmentation"
 repository = "https://github.com/unicode-rs/unicode-segmentation"
 documentation = "https://unicode-rs.github.io/unicode-segmentation"

scripts/unicode.py

@@ -229,7 +229,7 @@ def emit_util_mod(f):
     #[inline]
     fn is_alphabetic(c: char) -> bool {
         match c {
-            'a' ... 'z' | 'A' ... 'Z' => true,
+            'a' ..= 'z' | 'A' ..= 'Z' => true,
             c if c > '\x7f' => super::derived_property::Alphabetic(c),
             _ => false,
         }
@@ -238,7 +238,7 @@ def emit_util_mod(f):
     #[inline]
     fn is_numeric(c: char) -> bool {
         match c {
-            '0' ... '9' => true,
+            '0' ..= '9' => true,
             c if c > '\x7f' => super::general_category::N(c),
             _ => false,
         }
@@ -281,7 +281,6 @@ def emit_break_module(f, break_table, break_cats, name):
     f.write("""    }
 
     fn bsearch_range_value_table(c: char, r: &'static [(char, char, %sCat)]) -> (u32, u32, %sCat) {
-        use core;
         use core::cmp::Ordering::{Equal, Less, Greater};
         match r.binary_search_by(|&(lo, hi, _)| {
             if lo <= c && c <= hi { Equal }

src/grapheme.rs

@@ -10,7 +10,7 @@
 
 use core::cmp;
 
-use tables::grapheme::GraphemeCat;
+use crate::tables::grapheme::GraphemeCat;
 
 /// External iterator for grapheme clusters and byte offsets.
 ///
@@ -229,7 +229,7 @@ enum PairResult {
 }
 
 fn check_pair(before: GraphemeCat, after: GraphemeCat) -> PairResult {
-    use tables::grapheme::GraphemeCat::*;
+    use crate::tables::grapheme::GraphemeCat::*;
     use self::PairResult::*;
     match (before, after) {
         (GC_CR, GC_LF) => NotBreak,  // GB3
@@ -295,8 +295,8 @@ impl GraphemeCursor {
     }
 
     fn grapheme_category(&mut self, ch: char) -> GraphemeCat {
-        use tables::grapheme as gr;
-        use tables::grapheme::GraphemeCat::*;
+        use crate::tables::grapheme as gr;
+        use crate::tables::grapheme::GraphemeCat::*;
 
         if ch <= '\u{7e}' {
             // Special-case optimization for ascii, except U+007F.  This
@@ -387,7 +387,7 @@ impl GraphemeCursor {
     /// assert_eq!(cursor.is_boundary(&flags[8..], 8), Ok(true));
     /// ```
     pub fn provide_context(&mut self, chunk: &str, chunk_start: usize) {
-        use tables::grapheme as gr;
+        use crate::tables::grapheme as gr;
         assert!(chunk_start + chunk.len() == self.pre_context_offset.unwrap());
         self.pre_context_offset = None;
         if self.is_extended && chunk_start + chunk.len() == self.offset {
@@ -433,7 +433,7 @@ impl GraphemeCursor {
     }
 
     fn handle_regional(&mut self, chunk: &str, chunk_start: usize) {
-        use tables::grapheme as gr;
+        use crate::tables::grapheme as gr;
         let mut ris_count = self.ris_count.unwrap_or(0);
         for ch in chunk.chars().rev() {
             if self.grapheme_category(ch) != gr::GC_Regional_Indicator {
@@ -453,7 +453,7 @@ impl GraphemeCursor {
     }
 
     fn handle_emoji(&mut self, chunk: &str, chunk_start: usize) {
-        use tables::grapheme as gr;
+        use crate::tables::grapheme as gr;
         let mut iter = chunk.chars().rev();
         if let Some(ch) = iter.next() {
             if self.grapheme_category(ch) != gr::GC_ZWJ {
@@ -506,7 +506,7 @@ impl GraphemeCursor {
     /// assert_eq!(cursor.is_boundary(flags, 0), Ok(false));
     /// ```
     pub fn is_boundary(&mut self, chunk: &str, chunk_start: usize) -> Result<bool, GraphemeIncomplete> {
-        use tables::grapheme as gr;
+        use crate::tables::grapheme as gr;
         if self.state == GraphemeState::Break {
             return Ok(true)
         }

src/sentence.rs

@@ -13,7 +13,7 @@ use core::iter::Filter;
 
 // All of the logic for forward iteration over sentences
 mod fwd {
-    use tables::sentence::SentenceCat;
+    use crate::tables::sentence::SentenceCat;
     use core::cmp;
 
     // Describe a parsed part of source string as described in this table:
@@ -111,7 +111,7 @@ mod fwd {
         if parts[idx] == StatePart::ClosePlus { idx -= 1 }
 
         if parts[idx] == StatePart::ATerm {
-            use tables::sentence as se;
+            use crate::tables::sentence as se;
 
             for next_char in ahead.chars() {
                 //( ¬(OLetter | Upper | Lower | ParaSep | SATerm) )* Lower
@@ -176,7 +176,7 @@ mod fwd {
 
         #[inline]
         fn next(&mut self) -> Option<usize> {
-            use tables::sentence as se;
+            use crate::tables::sentence as se;
 
             for next_char in self.string[self.pos..].chars() {
                 let position_before = self.pos;
@@ -331,7 +331,7 @@ pub fn new_sentence_bound_indices<'a>(source: &'a str) -> USentenceBoundIndices<
 #[inline]
 pub fn new_unicode_sentences<'b>(s: &'b str) -> UnicodeSentences<'b> {
     use super::UnicodeSegmentation;
-    use tables::util::is_alphanumeric;
+    use crate::tables::util::is_alphanumeric;
 
     fn has_alphanumeric(s: &&str) -> bool { s.chars().any(|c| is_alphanumeric(c)) }
     let has_alphanumeric: fn(&&str) -> bool = has_alphanumeric; // coerce to fn pointer

src/tables.rs

@@ -30,7 +30,7 @@ pub mod util {
     #[inline]
     fn is_alphabetic(c: char) -> bool {
         match c {
-            'a' ... 'z' | 'A' ... 'Z' => true,
+            'a' ..= 'z' | 'A' ..= 'Z' => true,
             c if c > '' => super::derived_property::Alphabetic(c),
             _ => false,
         }
@@ -39,7 +39,7 @@ pub mod util {
     #[inline]
     fn is_numeric(c: char) -> bool {
         match c {
-            '0' ... '9' => true,
+            '0' ..= '9' => true,
             c if c > '' => super::general_category::N(c),
             _ => false,
         }
@@ -352,7 +352,6 @@ pub mod grapheme {
     }
 
     fn bsearch_range_value_table(c: char, r: &'static [(char, char, GraphemeCat)]) -> (u32, u32, GraphemeCat) {
-        use core;
         use core::cmp::Ordering::{Equal, Less, Greater};
         match r.binary_search_by(|&(lo, hi, _)| {
             if lo <= c && c <= hi { Equal }
@@ -1003,7 +1002,6 @@ pub mod word {
     }
 
     fn bsearch_range_value_table(c: char, r: &'static [(char, char, WordCat)]) -> (u32, u32, WordCat) {
-        use core;
         use core::cmp::Ordering::{Equal, Less, Greater};
         match r.binary_search_by(|&(lo, hi, _)| {
             if lo <= c && c <= hi { Equal }
@@ -1479,7 +1477,6 @@ pub mod emoji {
     }
 
     fn bsearch_range_value_table(c: char, r: &'static [(char, char, EmojiCat)]) -> (u32, u32, EmojiCat) {
-        use core;
         use core::cmp::Ordering::{Equal, Less, Greater};
         match r.binary_search_by(|&(lo, hi, _)| {
             if lo <= c && c <= hi { Equal }
@@ -1583,7 +1580,6 @@ pub mod sentence {
     }
 
     fn bsearch_range_value_table(c: char, r: &'static [(char, char, SentenceCat)]) -> (u32, u32, SentenceCat) {
-        use core;
         use core::cmp::Ordering::{Equal, Less, Greater};
         match r.binary_search_by(|&(lo, hi, _)| {
             if lo <= c && c <= hi { Equal }

src/test.rs

@@ -14,7 +14,7 @@ use std::prelude::v1::*;
 
 #[test]
 fn test_graphemes() {
-    use testdata::{TEST_SAME, TEST_DIFF};
+    use crate::testdata::{TEST_SAME, TEST_DIFF};
 
     pub const EXTRA_DIFF: &'static [(&'static str,
                                      &'static [&'static str],
@@ -88,7 +88,7 @@ fn test_graphemes() {
 
 #[test]
 fn test_words() {
-    use testdata::TEST_WORD;
+    use crate::testdata::TEST_WORD;
 
     // Unicode's official tests don't really test longer chains of flag emoji
     // TODO This could be improved with more tests like flag emoji with interspersed Extend chars and ZWJ
@@ -144,7 +144,7 @@ fn test_words() {
 
 #[test]
 fn test_sentences() {
-    use testdata::TEST_SENTENCE;
+    use crate::testdata::TEST_SENTENCE;
 
     for &(s, w) in TEST_SENTENCE.iter() {
         macro_rules! assert_ {

src/word.rs

@@ -11,7 +11,7 @@
 use core::cmp;
 use core::iter::Filter;
 
-use tables::word::WordCat;
+use crate::tables::word::WordCat;
 
 /// An iterator over the substrings of a string which, after splitting the string on
 /// [word boundaries](http://www.unicode.org/reports/tr29/#Word_Boundaries),
@@ -170,7 +170,7 @@ enum RegionalState {
 }
 
 fn is_emoji(ch: char) -> bool {
-    use tables::emoji;
+    use crate::tables::emoji;
     emoji::emoji_category(ch).2 == emoji::EmojiCat::EC_Extended_Pictographic
 }
 
@@ -187,7 +187,7 @@ impl<'a> Iterator for UWordBounds<'a> {
     fn next(&mut self) -> Option<&'a str> {
         use self::UWordBoundsState::*;
         use self::FormatExtendType::*;
-        use tables::word as wd;
+        use crate::tables::word as wd;
         if self.string.len() == 0 {
             return None;
         }
@@ -414,7 +414,7 @@ impl<'a> DoubleEndedIterator for UWordBounds<'a> {
     fn next_back(&mut self) -> Option<&'a str> {
         use self::UWordBoundsState::*;
         use self::FormatExtendType::*;
-        use tables::word as wd;
+        use crate::tables::word as wd;
         if self.string.len() == 0 {
             return None;
         }
@@ -666,7 +666,7 @@ impl<'a> UWordBounds<'a> {
 
     #[inline]
     fn get_next_cat(&self, idx: usize) -> Option<WordCat> {
-        use tables::word as wd;
+        use crate::tables::word as wd;
         let nidx = idx + self.string[idx..].chars().next().unwrap().len_utf8();
         if nidx < self.string.len() {
             let nch = self.string[nidx..].chars().next().unwrap();
@@ -678,7 +678,7 @@ impl<'a> UWordBounds<'a> {
 
     #[inline]
     fn get_prev_cat(&self, idx: usize) -> Option<WordCat> {
-        use tables::word as wd;
+        use crate::tables::word as wd;
         if idx > 0 {
             let nch = self.string[..idx].chars().next_back().unwrap();
             Some(wd::word_category(nch).2)
@@ -700,7 +700,7 @@ pub fn new_word_bound_indices<'b>(s: &'b str) -> UWordBoundIndices<'b> {
 
 #[inline]
 fn has_alphanumeric(s: &&str) -> bool {
-    use tables::util::is_alphanumeric;
+    use crate::tables::util::is_alphanumeric;
 
     s.chars().any(|c| is_alphanumeric(c))
 }