Re-work the parser from scratch

The initial implementation was incredibly naive on how complex an
assembler can actually be. Because of this, it never bothered to define
and produce a proper AST, and hence it was overall extremely fragile on
(not so) corner cases.

This commit re-writes everything from scratch for the parser, and it
should really be the last fundamental change to the parser other than
minor additions/features here and there.

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

1 files changed, 3 insertions, 0 deletions

diff --git a/lib/xixanta/src/errors.rs b/lib/xixanta/src/errors.rs
index d9a12cd..6c99f57 100644
--- a/lib/xixanta/src/errors.rs
+++ b/lib/xixanta/src/errors.rs
@@ -1,10 +1,12 @@
 use std::fmt;
 
 // TODO: global error
+// TODO: more errors, the `parse` thing is a hack!
 #[derive(Debug, Clone, PartialEq)]
 pub struct ParseError {
     pub line: usize,
     pub message: String,
+    pub parse: bool,
 }
 
 impl std::error::Error for ParseError {}
@@ -15,6 +17,7 @@ impl From<std::io::Error> for ParseError {
         ParseError {
             line: 0,
             message: err.to_string(),
+            parse: true,
         }
     }
 }