From f47fd24232edfecd398c3aa1dd6253acb3710093 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jind=C5=99ich=20Moravec?= <xmorave2@fi.muni.cz>
Date: Tue, 23 Jan 2024 21:02:13 +0100
Subject: [PATCH] feat: add thiserror annotations to error

---
 Cargo.lock           |  1 +
 minisql/Cargo.toml   |  1 +
 minisql/src/error.rs | 12 +++++++++++-
 3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/Cargo.lock b/Cargo.lock
index 31287bb..0471c9d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -255,6 +255,7 @@ name = "minisql"
 version = "0.1.0"
 dependencies = [
  "bimap",
+ "thiserror",
 ]
 
 [[package]]
diff --git a/minisql/Cargo.toml b/minisql/Cargo.toml
index 1a108f1..6164b6b 100644
--- a/minisql/Cargo.toml
+++ b/minisql/Cargo.toml
@@ -7,3 +7,4 @@ edition = "2021"
 
 [dependencies]
 bimap = "0.6.3"
+thiserror = "1.0.50"
diff --git a/minisql/src/error.rs b/minisql/src/error.rs
index 6000c0e..fe11cd2 100644
--- a/minisql/src/error.rs
+++ b/minisql/src/error.rs
@@ -1,17 +1,27 @@
+use thiserror::Error;
 use crate::internals::row::ColumnPosition;
 use crate::schema::{ColumnName, TableName};
 use crate::operation::InsertionValues;
 use crate::type_system::{DbType, Uuid, Value};
 
-#[derive(Debug)]
+#[derive(Debug, Error)]
 pub enum Error {
+    #[error("table {0} does not exist")]
     TableDoesNotExist(TableName),
+    #[error("column {1} of table {0} does not exist")]
     ColumnDoesNotExist(TableName, ColumnName),
+    #[error("column position {1} of table {0} does not exist")]
     ColumnPositionDoesNotExist(TableName, ColumnPosition),
+    #[error("column {1} of table {0} has unexpected type {2:?} and value {3:?}")]
     ValueDoesNotMatchExpectedType(TableName, ColumnName, DbType, Value),
+    #[error("table {0} already contains row with id {1}")]
     AttemptingToInsertAlreadyPresentId(TableName, Uuid),
+    #[error("table {0} is missing annotation for column {1}")]
     MissingTypeAnnotationOfColumn(TableName, ColumnPosition),
+    #[error("table {0} is missing column {1} in insert values {2:?}")]
     MissingColumnInInsertValues(TableName, ColumnName, InsertionValues),
+    #[error("table {0} has mismatch between insert values {1:?} and columns")]
     MismatchBetweenInsertValuesAndColumns(TableName, InsertionValues),
+    #[error("table {0} cannot be indexed on column {1}")]
     AttemptToIndexNonIndexableColumn(TableName, ColumnName),
 }