From d849f5e301fa47cfd87df1e7f1ad0346ddf387f1 Mon Sep 17 00:00:00 2001
From: SoniEx2 <endermoneymod@gmail.com>
Date: Sat, 8 Apr 2023 18:52:00 -0300
Subject: Initial success

---
 src/errors.rs | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

(limited to 'src/errors.rs')

diff --git a/src/errors.rs b/src/errors.rs
index 914b70a..ea1e60d 100644
--- a/src/errors.rs
+++ b/src/errors.rs
@@ -56,3 +56,37 @@ pub enum MatchError {
      /// requirements.
      Unsatisfiable,
 }
+
+#[derive(Debug)]
+#[non_exhaustive]
+pub enum QueryError {
+     /// Returned if the deserialization recurses too deeply.
+    StackOverflow,
+    /// Returned if there's nothing to deserialize.
+    Empty,
+    /// The query is unsatisfiable. This happens if e.g. there are multiple
+    /// values in the query but only one value can fit into the request.
+    Unsatisfiable,
+    /// Wrapped Serde error.
+    Serde(serde::de::value::Error),
+}
+
+impl std::fmt::Display for QueryError {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Self::StackOverflow => write!(f, "stack overflow"),
+            Self::Empty => write!(f, "no results"),
+            Self::Unsatisfiable => write!(f, "unsatisfiable"),
+            Self::Serde(e) => e.fmt(f),
+        }
+    }
+}
+
+impl std::error::Error for QueryError {
+}
+
+impl serde::de::Error for QueryError {
+    fn custom<T>(msg: T) -> Self where T: std::fmt::Display {
+        Self::Serde(serde::de::value::Error::custom(msg))
+    }
+}
-- 
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