massively upgrade error handling

1 files changed, 12 insertions, 6 deletions

diff --git a/src/makefile/target.rs b/src/makefile/target.rs
index eb181cd..04603c9 100644
--- a/src/makefile/target.rs
+++ b/src/makefile/target.rs
@@ -42,26 +42,32 @@ impl Target {
         }
         let exists = metadata(&self.name).is_ok();
         let newer_than_all_dependencies = self.prerequisites.iter().all(|t| {
-            self.newer_than(&file.get_target(t).borrow())
+            file.get_target(t)
+                .ok()
+                .and_then(|t| self.newer_than(&t.borrow()))
                 .unwrap_or(false)
         });
         exists && newer_than_all_dependencies
     }
 
-    pub(crate) fn update(&self, file: &Makefile) {
+    pub(crate) fn update(&self, file: &Makefile) -> anyhow::Result<()> {
         for prereq in &self.prerequisites {
-            file.update_target(prereq);
+            file.update_target(prereq)?;
         }
         if !self.is_up_to_date(file) {
-            self.execute_commands(file);
+            self.execute_commands(file)?;
         }
         self.already_updated.set(true);
+
+        Ok(())
     }
 
-    fn execute_commands(&self, file: &Makefile) {
+    fn execute_commands(&self, file: &Makefile) -> anyhow::Result<()> {
         for command in &self.commands {
-            command.execute(file, self);
+            command.execute(file, self)?;
         }
+
+        Ok(())
     }
 }