1 files changed, 54 insertions, 0 deletions
diff --git a/aoc2023/build/packages/adglent/src/priv/errors.gleam b/aoc2023/build/packages/adglent/src/priv/errors.gleam
new file mode 100644
index 0000000..14c35ca
--- /dev/null
+++ b/aoc2023/build/packages/adglent/src/priv/errors.gleam
@@ -0,0 +1,54 @@
+import gleam/result
+import gleam/string
+import gleam/io
+
+pub fn map_messages(
+  result: Result(a, b),
+  success_message: String,
+  error_message: String,
+) -> Result(String, String) {
+  result
+  |> result.map_error(fn(error) {
+    "Error - " <> error_message <> ": " <> string.inspect(error)
+  })
+  |> result.replace(success_message)
+}
+
+pub fn map_error(
+  result: Result(a, b),
+  error_message: String,
+) -> Result(a, String) {
+  result
+  |> result.map_error(fn(error) {
+    error_message <> ": " <> string.inspect(error)
+  })
+}
+
+pub fn print_result(result: Result(String, String)) {
+  result
+  |> result.unwrap_both
+  |> io.println
+  result
+}
+
+pub fn print_error(result: Result(a, String)) {
+  result
+  |> result.map_error(fn(err) {
+    io.println(err)
+    err
+  })
+}
+
+pub fn assert_ok(result: Result(a, String)) {
+  let assert Ok(value) =
+    result
+    |> result.map_error(fn(err) {
+      halt(1)
+      err
+    })
+  value
+}
+
+@target(erlang)
+@external(erlang, "erlang", "halt")
+fn halt(a: Int) -> Nil