emulator: imports work relatively to file being assembled (set cwd)

assembler/src/resolver.rs

@@ -66,7 +66,7 @@ fn generate_symbol_table(nodes: &[Node]) -> Result<HashMap<Symbol, u32>, Assembl
 }
 
 pub fn resolve_dependencies(mut nodes: Vec<Node>) -> Result<Vec<Node>, AssembleError> {
-    // first we get a list of imports
+    // First we get a list of imports.
     let mut dependencies = Vec::new();
     for node in &nodes {
         if let Opcode::Include = node.opcode() {
@@ -81,7 +81,11 @@ pub fn resolve_dependencies(mut nodes: Vec<Node>) -> Result<Vec<Node>, AssembleE
             } else {
                 unreachable!()
             };
-            let hash = quick_hash(&PathBuf::from(path).canonicalize().unwrap());
+            let hash = quick_hash(
+                &PathBuf::from(path)
+                    .canonicalize()
+                    .expect("ERROR: Invalid import path."),
+            );
 
             dependencies.push((name, hash));
         }

emulator/src/emulator/ui/editor.rs

@@ -146,7 +146,7 @@ impl Editor {
         }
 
         if let Some(path) = FileDialog::new()
-            .add_filter("damn simple files", &["dsa", "dsb", "dsc", "dsd"])
+            .add_filter("Assembly Files or Binaries", &["dsa", "dsb"])
             .add_filter("all", &["*"])
             .set_directory(&work_dir)
             .save_file()
@@ -169,17 +169,22 @@ impl Editor {
         });
 
         if let Some(path) = FileDialog::new()
-            .add_filter("damn simple files", &["dsa", "dsb", "dsc", "dsd"])
+            .add_filter("Assembly Files or Binaries", &["dsa", "dsb"])
             .add_filter("all", &["*"])
             .set_directory(&work_dir)
             .pick_file()
         {
             if let Ok(contents) = std::fs::read_to_string(&path) {
-                self.path = Some(path);
+                self.path = Some(path.clone());
                 self.text.clone_from(&contents);
                 self.buffer = contents;
                 self.unsaved = false;
             }
+
+            std::env::set_current_dir(
+                path.parent().expect("A file should be in a directory!"),
+            )
+            .expect("ERROR: Failed to set current working directory.");
         }
     }
 

resources/dsa/test.dsa

@@ -1,5 +1,5 @@
-include print "../resources/dsa/print.dsa"
+include print "print.dsa"
-include fib "../resources/dsa/fib.dsa"
+include fib "fib.dsa"
 
 dw stack: 0x10000
 db string: "An idiot admires complexity, a genius admires simplicity,