Implement the .include statement

This needed some heavy lifting when it comes to how files were located.
This means that statements like .include/.incbin now take into
consideration a new list made out of SourceInfo, which holds enough
information to translate from which file a node comes from. This has
also been added into errors, so they are more informative on what went
wrong.

In order to tests this, besides all the regular unit tests, a new e2e
test has been added.

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

1 files changed, 15 insertions, 0 deletions

diff --git a/lib/xixanta/src/lib.rs b/lib/xixanta/src/lib.rs
index 0ad901f..95ead9c 100644
--- a/lib/xixanta/src/lib.rs
+++ b/lib/xixanta/src/lib.rs
@@ -1,6 +1,21 @@
 #[macro_use]
 extern crate lazy_static;
 
+#[derive(Clone, Debug, PartialEq)]
+pub struct SourceInfo {
+    pub working_directory: std::path::PathBuf,
+    pub name: String,
+}
+
+impl Default for SourceInfo {
+    fn default() -> Self {
+        SourceInfo {
+            working_directory: std::env::current_dir().unwrap().to_path_buf(),
+            name: "".to_string(),
+        }
+    }
+}
+
 pub mod assembler;
 pub mod errors;
 pub mod node;