From 48112a47e92d892c6dd8665315923daf90de96df Mon Sep 17 00:00:00 2001
From: Ed Page <epage@duosecurity.com>
Date: Thu, 31 Dec 2020 19:29:45 -0600
Subject: [PATCH] refactor(parser): Abstract over lifetimes

---
 crates/typos/src/dict.rs   | 14 ++++++++++++++
 crates/typos/src/parser.rs | 27 +++++++++++++++++++++++----
 src/checks.rs              |  4 ++--
 3 files changed, 39 insertions(+), 6 deletions(-)

diff --git a/crates/typos/src/dict.rs b/crates/typos/src/dict.rs
index 6e0a7f8..7c92d5b 100644
--- a/crates/typos/src/dict.rs
+++ b/crates/typos/src/dict.rs
@@ -27,6 +27,20 @@ impl<'c> Status<'c> {
         }
     }
 
+    pub fn into_owned(self) -> Status<'static> {
+        match self {
+            Status::Valid => Status::Valid,
+            Status::Invalid => Status::Invalid,
+            Status::Corrections(corrections) => {
+                let corrections = corrections
+                    .into_iter()
+                    .map(|c| Cow::Owned(c.into_owned()))
+                    .collect();
+                Status::Corrections(corrections)
+            }
+        }
+    }
+
     pub fn borrow(&self) -> Status<'_> {
         match self {
             Status::Corrections(corrections) => {
diff --git a/crates/typos/src/parser.rs b/crates/typos/src/parser.rs
index d427da1..95d0d4c 100644
--- a/crates/typos/src/parser.rs
+++ b/crates/typos/src/parser.rs
@@ -1,5 +1,6 @@
 use crate::tokens;
 use crate::Dictionary;
+use std::borrow::Cow;
 
 #[derive(Clone)]
 pub struct ParserBuilder<'p, 'd> {
@@ -86,7 +87,7 @@ impl<'p, 'd> TyposParser<'p, 'd> {
             Some(corrections) => {
                 let typo = Typo {
                     byte_offset: ident.offset(),
-                    typo: ident.token(),
+                    typo: ident.token().into(),
                     corrections,
                 };
                 itertools::Either::Left(Some(typo).into_iter())
@@ -105,7 +106,7 @@ impl<'p, 'd> TyposParser<'p, 'd> {
             Some(corrections) => {
                 let typo = Typo {
                     byte_offset: word.offset(),
-                    typo: word.token(),
+                    typo: word.token().into(),
                     corrections,
                 };
                 Some(typo)
@@ -119,15 +120,33 @@ impl<'p, 'd> TyposParser<'p, 'd> {
 #[non_exhaustive]
 pub struct Typo<'m> {
     pub byte_offset: usize,
-    pub typo: &'m str,
+    pub typo: Cow<'m, str>,
     pub corrections: crate::Status<'m>,
 }
 
+impl<'m> Typo<'m> {
+    pub fn into_owned(self) -> Typo<'static> {
+        Typo {
+            byte_offset: self.byte_offset,
+            typo: Cow::Owned(self.typo.into_owned()),
+            corrections: self.corrections.into_owned(),
+        }
+    }
+
+    pub fn borrow(&self) -> Typo<'_> {
+        Typo {
+            byte_offset: self.byte_offset,
+            typo: Cow::Borrowed(self.typo.as_ref()),
+            corrections: self.corrections.borrow(),
+        }
+    }
+}
+
 impl<'m> Default for Typo<'m> {
     fn default() -> Self {
         Self {
             byte_offset: 0,
-            typo: "",
+            typo: "".into(),
             corrections: crate::Status::Invalid,
         }
     }
diff --git a/src/checks.rs b/src/checks.rs
index 65d7e48..84e9c83 100644
--- a/src/checks.rs
+++ b/src/checks.rs
@@ -111,7 +111,7 @@ impl Check for Typos {
                         context: Some(report::PathContext { path }.into()),
                         buffer: std::borrow::Cow::Borrowed(file_name.as_bytes()),
                         byte_offset: typo.byte_offset,
-                        typo: typo.typo,
+                        typo: typo.typo.as_ref(),
                         corrections: typo.corrections,
                     };
                     reporter.report(msg.into())?;
@@ -134,7 +134,7 @@ impl Check for Typos {
                         context: Some(report::FileContext { path, line_num }.into()),
                         buffer: std::borrow::Cow::Borrowed(line),
                         byte_offset: line_offset,
-                        typo: typo.typo,
+                        typo: typo.typo.as_ref(),
                         corrections: typo.corrections,
                     };
                     reporter.report(msg.into())?;