roezio: Update nom from 4 to 7.1

Signed-off-by: Maxime “pep” Buquet <pep@bouah.net>

Cargo.toml

@@ -8,7 +8,7 @@ authors = [
 
 [dependencies]
 pyo3 = { version = "0.16", features = ["extension-module"] }
-nom = "4"
+nom = "7.1"
 chrono = "0.4"
 ncurses = "5"
 lazy_static = "1"

src/lib.rs

@@ -1,7 +1,6 @@
-extern crate pyo3;
-#[macro_use]
-extern crate nom;
 extern crate ncurses;
+extern crate nom;
+extern crate pyo3;
 #[macro_use]
 extern crate lazy_static;
 extern crate enum_set;
@@ -33,14 +32,14 @@ macro_rules! py_object {
     };
 }
 
-fn nom_to_py_err(py: Python, err: nom::Err<&str>) -> PyErr {
-    LogParseError::new_err(py_object!(py, err.into_error_kind().description()))
+fn nom_to_py_err(py: Python, err: nom::Err<nom::error::Error<&str>>) -> PyErr {
+    LogParseError::new_err(py_object!(py, err.to_string()))
 }
 
 #[pyfunction]
 fn to_curses_attr(py: Python, fg: i16, bg: i16, attrs: &str) -> PyResult<PyObject> {
     let attrs = match parse_attrs(attrs) {
-        Ok(attrs) => attrs.1,
+        Ok(attrs) => attrs,
         Err(err) => return Err(nom_to_py_err(py, err)),
     };
     let result = curses_attr(fg, bg, attrs);

src/theming.rs

@@ -1,5 +1,12 @@
 use enum_set::{CLike, EnumSet};
 use ncurses::{attr_t, init_pair, A_BLINK, A_BOLD, A_ITALIC, A_UNDERLINE, COLORS, COLOR_PAIR};
+use nom::{
+    branch::alt,
+    bytes::complete::tag,
+    error::{Error as NomError, ErrorKind, ParseError},
+    multi::many0,
+    Err as NomErr, IResult,
+};
 use std::collections::HashMap;
 use std::mem;
 use std::sync::Mutex;
@@ -34,22 +41,32 @@ impl CLike for Attr {
     }
 }
 
-named!(
-    pub(crate) parse_attrs<&str, EnumSet<Attr>>,
-    do_parse!(
-        vec: many0!(alt_complete!(
-            tag!("b") => { |_| Attr::Bold } |
-            tag!("i") => { |_| Attr::Italic } |
-            tag!("u") => { |_| Attr::Underline } |
-            tag!("a") => { |_| Attr::Blink }
-        )) >>
-        ({
-            let mut set = EnumSet::new();
-            set.extend(vec);
-            set
-        })
-    )
-);
+fn parse_attr(input: &str) -> IResult<&str, Attr> {
+    let (input, attr) = alt((tag("b"), tag("i"), tag("u"), tag("a")))(input)?;
+
+    Ok((
+        input,
+        match attr {
+            "b" => Attr::Bold,
+            "i" => Attr::Italic,
+            "u" => Attr::Underline,
+            "a" => Attr::Blink,
+            _ => {
+                return Err(NomErr::Error(NomError::from_error_kind(
+                    input,
+                    ErrorKind::Tag,
+                )))
+            }
+        },
+    ))
+}
+
+pub(crate) fn parse_attrs<'a>(input: &'a str) -> Result<EnumSet<Attr>, NomErr<NomError<&'a str>>> {
+    let (_, vec) = many0(parse_attr)(input)?;
+    let mut set = EnumSet::new();
+    set.extend(vec);
+    Ok(set)
+}
 
 lazy_static! {
     // TODO: probably replace that mutex with an atomic.
@@ -135,7 +152,7 @@ mod tests {
         let attrs = "";
         let expected = EnumSet::new();
         let received = parse_attrs(attrs).unwrap();
-        assert_eq!(received.1, expected);
+        assert_eq!(received, expected);
     }
 
     #[test]
@@ -144,7 +161,7 @@ mod tests {
         let mut expected = EnumSet::new();
         expected.insert(Attr::Bold);
         let received = parse_attrs(attrs).unwrap();
-        assert_eq!(received.1, expected);
+        assert_eq!(received, expected);
     }
 
     #[test]
@@ -156,6 +173,6 @@ mod tests {
         expected.insert(Attr::Italic);
         expected.insert(Attr::Underline);
         let received = parse_attrs(attrs).unwrap();
-        assert_eq!(received.1, expected);
+        assert_eq!(received, expected);
     }
 }