1 files changed, 25 insertions, 0 deletions
diff --git a/src/librustc/session/config.rs b/src/librustc/session/config.rs
index 6e0372f009e..7e80139b791 100644
--- a/src/librustc/session/config.rs
+++ b/src/librustc/session/config.rs
@@ -528,6 +528,25 @@ impl OutputFilenames {
     pub fn filestem(&self) -> String {
         format!("{}{}", self.out_filestem, self.extra)
     }
+
+    pub fn contains_path(&self, input_path: &PathBuf) -> bool {
+        let input_path = input_path.canonicalize().ok();
+        if input_path.is_none() {
+            return false
+        }
+        match self.single_output_file {
+            Some(ref output_path) => output_path.canonicalize().ok() == input_path,
+            None => {
+                for k in self.outputs.keys() {
+                    let output_path = self.path(k.to_owned());
+                    if output_path.canonicalize().ok() == input_path {
+                        return true;
+                    }
+                }
+                false
+            }
+        }
+    }
 }
 
 pub fn host_triple() -> &'static str {
@@ -596,6 +615,12 @@ impl Options {
             ).map(|(src, dst)| (src.clone(), dst.clone())).collect()
         )
     }
+
+    /// True if there will be an output file generated
+    pub fn will_create_output_file(&self) -> bool {
+        !self.debugging_opts.parse_only && // The file is just being parsed
+            !self.debugging_opts.ls // The file is just being queried
+    }
 }
 
 // The type of entry function, so