subscriber: fix filter::ParseError accidentally being renamed (#1558)

I accidentally renamed this type in PR #1550 after getting confused by a
renaming import that I thought was publicly re-exported, but it wasn't
actually..sorry about that!

This commit renames (or...un-renames?) the type. Whoopsie!

Fixes #1557

tracing-subscriber/src/filter/directive.rs

@@ -3,7 +3,7 @@ use std::{cmp::Ordering, error::Error, fmt, iter::FromIterator, str::FromStr};
 use tracing_core::Metadata;
 /// Indicates that a string could not be parsed as a filtering directive.
 #[derive(Debug)]
-pub struct DirectiveParseError {
+pub struct ParseError {
     kind: ParseErrorKind,
 }
 
@@ -260,7 +260,7 @@ impl fmt::Display for StaticDirective {
 }
 
 impl FromStr for StaticDirective {
-    type Err = DirectiveParseError;
+    type Err = ParseError;
 
     fn from_str(s: &str) -> Result<Self, Self::Err> {
         // This method parses a filtering directive in one of the following
@@ -273,15 +273,15 @@ impl FromStr for StaticDirective {
         let mut split = s.split('=');
         let part0 = split
             .next()
-            .ok_or_else(|| DirectiveParseError::msg("string must not be empty"))?;
+            .ok_or_else(|| ParseError::msg("string must not be empty"))?;
 
         // Directive includes an `=`:
         // * `foo=trace`
         // * `foo[{bar}]=trace`
         // * `foo[{bar,baz}]=trace`
         if let Some(part1) = split.next() {
             if split.next().is_some() {
-                return Err(DirectiveParseError::msg(
+                return Err(ParseError::msg(
                     "too many '=' in filter directive, expected 0 or 1",
                 ));
             }
@@ -294,14 +294,14 @@ impl FromStr for StaticDirective {
             // * `foo[{bar,baz}]=trace`
             if let Some(maybe_fields) = split.next() {
                 if split.next().is_some() {
-                    return Err(DirectiveParseError::msg(
+                    return Err(ParseError::msg(
                         "too many '[{' in filter directive, expected 0 or 1",
                     ));
                 }
 
-                let fields = maybe_fields.strip_suffix("}]").ok_or_else(|| {
-                    DirectiveParseError::msg("expected fields list to end with '}]'")
-                })?;
+                let fields = maybe_fields
+                    .strip_suffix("}]")
+                    .ok_or_else(|| ParseError::msg("expected fields list to end with '}]'"))?;
                 field_names.extend(fields.split(',').filter_map(|s| {
                     if s.is_empty() {
                         None
@@ -339,21 +339,21 @@ impl FromStr for StaticDirective {
 
 // === impl ParseError ===
 
-impl DirectiveParseError {
+impl ParseError {
     pub(crate) fn new() -> Self {
-        DirectiveParseError {
+        ParseError {
             kind: ParseErrorKind::Other(None),
         }
     }
 
     pub(crate) fn msg(s: &'static str) -> Self {
-        DirectiveParseError {
+        ParseError {
             kind: ParseErrorKind::Other(Some(s)),
         }
     }
 }
 
-impl fmt::Display for DirectiveParseError {
+impl fmt::Display for ParseError {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match self.kind {
             ParseErrorKind::Other(None) => f.pad("invalid filter directive"),
@@ -364,7 +364,7 @@ impl fmt::Display for DirectiveParseError {
     }
 }
 
-impl Error for DirectiveParseError {
+impl Error for ParseError {
     fn description(&self) -> &str {
         "invalid filter directive"
     }
@@ -378,15 +378,15 @@ impl Error for DirectiveParseError {
     }
 }
 
-impl From<Box<dyn Error + Send + Sync>> for DirectiveParseError {
+impl From<Box<dyn Error + Send + Sync>> for ParseError {
     fn from(e: Box<dyn Error + Send + Sync>) -> Self {
         Self {
             kind: ParseErrorKind::Field(e),
         }
     }
 }
 
-impl From<level::ParseError> for DirectiveParseError {
+impl From<level::ParseError> for ParseError {
     fn from(l: level::ParseError) -> Self {
         Self {
             kind: ParseErrorKind::Level(l),

tracing-subscriber/src/filter/env/directive.rs

@@ -1,5 +1,5 @@
 use super::FilterVec;
-pub(crate) use crate::filter::directive::{DirectiveParseError, StaticDirective};
+pub(crate) use crate::filter::directive::{ParseError, StaticDirective};
 use crate::filter::{
     directive::{DirectiveSet, Match},
     env::{field, FieldMap},
@@ -145,7 +145,7 @@ impl Match for Directive {
 }
 
 impl FromStr for Directive {
-    type Err = DirectiveParseError;
+    type Err = ParseError;
     fn from_str(from: &str) -> Result<Self, Self::Err> {
         lazy_static! {
             static ref DIRECTIVE_RE: Regex = Regex::new(
@@ -183,9 +183,7 @@ impl FromStr for Directive {
                 "#).unwrap();
         }
 
-        let caps = DIRECTIVE_RE
-            .captures(from)
-            .ok_or_else(DirectiveParseError::new)?;
+        let caps = DIRECTIVE_RE.captures(from).ok_or_else(ParseError::new)?;
 
         if let Some(level) = caps
             .name("global_level")

tracing-subscriber/src/filter/env/mod.rs

@@ -13,7 +13,7 @@ use crate::{
     subscribe::{Context, Subscribe},
     sync::RwLock,
 };
-use directive::DirectiveParseError;
+use directive::ParseError;
 use std::{cell::RefCell, collections::HashMap, env, error::Error, fmt, str::FromStr};
 use tracing_core::{
     callsite,
@@ -133,7 +133,7 @@ pub struct FromEnvError {
 
 #[derive(Debug)]
 enum ErrorKind {
-    Parse(DirectiveParseError),
+    Parse(ParseError),
     Env(env::VarError),
 }
 
@@ -170,7 +170,7 @@ impl EnvFilter {
 
     /// Returns a new `EnvFilter` from the directives in the given string,
     /// or an error if any are invalid.
-    pub fn try_new<S: AsRef<str>>(dirs: S) -> Result<Self, directive::DirectiveParseError> {
+    pub fn try_new<S: AsRef<str>>(dirs: S) -> Result<Self, directive::ParseError> {
         let directives = dirs
             .as_ref()
             .split(',')
@@ -488,7 +488,7 @@ impl<C: Collect> Subscribe<C> for EnvFilter {
 }
 
 impl FromStr for EnvFilter {
-    type Err = directive::DirectiveParseError;
+    type Err = directive::ParseError;
 
     fn from_str(spec: &str) -> Result<Self, Self::Err> {
         Self::try_new(spec)
@@ -539,8 +539,8 @@ impl fmt::Display for EnvFilter {
 
 // ===== impl FromEnvError =====
 
-impl From<directive::DirectiveParseError> for FromEnvError {
-    fn from(p: directive::DirectiveParseError) -> Self {
+impl From<directive::ParseError> for FromEnvError {
+    fn from(p: directive::ParseError) -> Self {
         Self {
             kind: ErrorKind::Parse(p),
         }

tracing-subscriber/src/filter/mod.rs

@@ -17,7 +17,7 @@ mod level;
 mod subscriber_filters;
 mod targets;
 
-pub use self::directive::DirectiveParseError;
+pub use self::directive::ParseError;
 pub use self::filter_fn::*;
 #[cfg(not(feature = "registry"))]
 pub(crate) use self::has_plf_stubs::*;

tracing-subscriber/src/filter/targets.rs

@@ -1,6 +1,6 @@
 use crate::{
     filter::{
-        directive::{DirectiveParseError, DirectiveSet, StaticDirective},
+        directive::{DirectiveSet, ParseError, StaticDirective},
         LevelFilter,
     },
     subscribe,
@@ -302,7 +302,7 @@ where
 }
 
 impl FromStr for Targets {
-    type Err = DirectiveParseError;
+    type Err = ParseError;
     fn from_str(s: &str) -> Result<Self, Self::Err> {
         s.split(',')
             .map(StaticDirective::from_str)