move util hex_char_for() to utils.rs

src/utils.rs

@@ -746,3 +746,13 @@ pub(crate) fn read_until_char<I: Iterator<Item = Token>>(
 pub(crate) fn is_ident_char(c: char) -> bool {
     c.is_ascii_alphabetic() || c == '_' || c == '\\' || (!c.is_ascii() && !c.is_control())
 }
+
+pub(crate) fn hex_char_for(number: u32) -> char {
+    assert!(number < 0x10);
+    std::char::from_u32(if number < 0xA {
+        0x30 + number
+    } else {
+        0x61 - 0xA + number
+    })
+    .unwrap()
+}

src/value/mod.rs

@@ -7,6 +7,7 @@ use crate::color::Color;
 use crate::common::{Brackets, ListSeparator, Op, QuoteKind};
 use crate::error::SassResult;
 use crate::unit::{Unit, UNIT_CONVERSION_TABLE};
+use crate::utils::hex_char_for;
 
 use css_function::is_special_function;
 pub(crate) use map::SassMap;
@@ -39,16 +40,6 @@ pub(crate) enum Value {
     Function(SassFunction),
 }
 
-fn hex_char_for(number: u32) -> char {
-    assert!(number < 0x10);
-    std::char::from_u32(if number < 0xA {
-        0x30 + number
-    } else {
-        0x61 - 0xA + number
-    })
-    .unwrap()
-}
-
 fn visit_quoted_string(buf: &mut String, force_double_quote: bool, string: &str) -> SassResult<()> {
     let mut has_single_quote = false;
     let mut has_double_quote = false;