Version and Snapshot parsing

src/error.rs

@@ -6,4 +6,40 @@ pub enum Error {
     Generic,
 }
 
+#[derive(Debug, Clone, Error)]
+pub enum VersionError {
+    #[error("Incorrect major version: {0}")]
+    IncorrectMajor(String),
+
+    #[error("Incorrect minor version: {0}")]
+    IncorrectMinor(String),
+
+    #[error("Incorrect patch version: {0}")]
+    IncorrectPatch(String),
+
+    #[error("Incorrect major version: {0}")]
+    IncorrectYear(String),
+
+    #[error("Incorrect minor version: {0}")]
+    IncorrectWeek(String),
+
+    #[error("Incorrect patch version: {0}")]
+    IncorrectBuild(String),
+
+    #[error("Missing major version")]
+    MissingMajor,
+
+    #[error("Missing minor version")]
+    MissingMinor,
+
+    #[error("Missing patch version")]
+    MissingPatch,
+
+    #[error("Invalid snapshot format")]
+    InvalidSnapshotFormat,
+
+    #[error("Too many components")]
+    ExtraComponents,
+}
+
 type Result<T> = std::result::Result<T, Error>;