Initial commit

A lot is missing and there is a long road ahead to make the assembler
even work.

Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>

1 files changed, 25 insertions, 0 deletions

diff --git a/lib/xixanta/src/errors.rs b/lib/xixanta/src/errors.rs
new file mode 100644
index 0000000..48f7286
--- /dev/null
+++ b/lib/xixanta/src/errors.rs
@@ -0,0 +1,25 @@
+use std::fmt;
+
+#[derive(Debug, Clone, PartialEq)]
+pub struct ParseError {
+    pub line: usize,
+    pub message: String,
+}
+
+impl std::error::Error for ParseError {}
+
+impl From<std::io::Error> for ParseError {
+    fn from(err: std::io::Error) -> Self {
+        // TODO
+        ParseError {
+            line: 0,
+            message: err.to_string(),
+        }
+    }
+}
+
+impl fmt::Display for ParseError {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "parser (line {}): {}.", self.line + 1, self.message)
+    }
+}