From e564922c0a19e815b5941efee141ca1254939739 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ond=C5=99ej=20Hru=C5=A1ka?= <ondra@ondrovo.com>
Date: Mon, 11 May 2020 09:58:09 +0200
Subject: [PATCH] replace failure with thiserror, fix error not implementing
 Error

---
 Cargo.toml |  5 ++---
 README.md  |  4 ++++
 src/lib.rs | 21 +++++++--------------
 3 files changed, 13 insertions(+), 17 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index c848f26..0dee0ea 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "json_dotpath"
-version = "1.0.2"
+version = "1.0.3"
 authors = ["Ondřej Hruška <ondra@ondrovo.com>"]
 edition = "2018"
 license = "MIT"
@@ -16,5 +16,4 @@ categories = [
 serde = "1"
 serde_derive = "1"
 serde_json = "1"
-failure = "0.1.7"
-failure_derive = "0.1.7"
+thiserror = "1"
diff --git a/README.md b/README.md
index 7aae8b1..8211c84 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,10 @@ Access members of nested JSON arrays and objects using "dotted paths".
 
 ## Changes
 
+### 1.0.3
+
+Replaced `failure` with `thiserror`, implement `std::error::Error` for the error type.
+
 ### 1.0.0
 
 The API changed to return `Result<Option<T>>` instead of panicking internally on error.
diff --git a/src/lib.rs b/src/lib.rs
index a4ee30d..0f57463 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -2,41 +2,34 @@ use serde::de::DeserializeOwned;
 use serde::Serialize;
 use serde_json::{Map, Value};
 use std::mem;
+use thiserror::Error;
 
 #[cfg(test)]
 #[macro_use]
 extern crate serde_derive;
-#[macro_use]
-extern crate failure;
 
 /// Errors from dot_path methods
-#[derive(Debug, Fail)]
+#[derive(Debug, Error)]
 pub enum Error {
     /// Path hit a value in the JSON object that is not array or map
     /// and could not continue the traversal.
     ///
     /// (e.g. `foo.bar` in `{"foo": 123}`)
-    #[fail(display = "Unexpected value reached while traversing path")]
+    #[error("Unexpected value reached while traversing path")]
     BadPathElement,
 
     /// Array index out of range
-    #[fail(display = "Invalid array index: {}", _0)]
+    #[error("Invalid array index: {0}")]
     BadIndex(usize),
 
     /// Invalid (usually empty) key used in Map or Array.
     /// If the key is valid but out of bounds, `BadIndex` will be used.
-    #[fail(display = "Invalid key: {}", _0)]
+    #[error("Invalid key: {0}")]
     InvalidKey(String),
 
     /// Error serializing or deserializing a value
-    #[fail(display = "Invalid array or map key")]
-    SerdeError(#[fail(cause)] serde_json::Error),
-}
-
-impl From<serde_json::Error> for Error {
-    fn from(e: serde_json::Error) -> Self {
-        Error::SerdeError(e)
-    }
+    #[error("Invalid array or map key")]
+    SerdeError(#[from] serde_json::Error),
 }
 
 use crate::Error::{BadIndex, BadPathElement, InvalidKey};