dirstate: no longer pass the `oldstate` value to the dirstatemap

dirstate: no longer pass the `oldstate` value to the dirstatemap

The dirstatemap already have this information.

Differential Revision: https://phab.mercurial-scm.org/D10966

--- a/mercurial/dirstate.py	Sat Jul 03 20:57:44 2021 +0200
+++ b/mercurial/dirstate.py	Sat Jul 03 20:59:26 2021 +0200
@@ -450,7 +450,6 @@
         from_p2=False,
         possibly_dirty=False,
     ):
-        oldstate = self[f]
         entry = self._map.get(f)
         if state == b'a' or entry is not None and entry.removed:
             scmutil.checkfilename(f)
@@ -471,7 +470,6 @@
         self._updatedfiles.add(f)
         self._map.addfile(
             f,
-            oldstate,
             state=state,
             mode=mode,
             size=size,

--- a/mercurial/dirstatemap.py	Sat Jul 03 20:57:44 2021 +0200
+++ b/mercurial/dirstatemap.py	Sat Jul 03 20:59:26 2021 +0200
@@ -147,7 +147,6 @@
     def addfile(
         self,
         f,
-        oldstate,
         state,
         mode,
         size=None,
@@ -175,9 +174,12 @@
             mtime = mtime & rangemask
         assert size is not None
         assert mtime is not None
-        if oldstate in b"?r" and "_dirs" in self.__dict__:
+        old_entry = self.get(f)
+        if (
+            old_entry is None or old_entry.removed
+        ) and "_dirs" in self.__dict__:
             self._dirs.addpath(f)
-        if oldstate == b"?" and "_alldirs" in self.__dict__:
+        if old_entry is None and "_alldirs" in self.__dict__:
             self._alldirs.addpath(f)
         self._map[f] = dirstatetuple(state, mode, size, mtime)
         if state != b'n' or mtime == AMBIGUOUS_TIME:
@@ -459,7 +461,6 @@
         def addfile(
             self,
             f,
-            oldstate,
             state,
             mode,
             size=None,
@@ -469,7 +470,6 @@
         ):
             return self._rustmap.addfile(
                 f,
-                oldstate,
                 state,
                 mode,
                 size,

--- a/rust/hg-core/src/dirstate/dirstate_map.rs	Sat Jul 03 20:57:44 2021 +0200
+++ b/rust/hg-core/src/dirstate/dirstate_map.rs	Sat Jul 03 20:59:26 2021 +0200
@@ -68,7 +68,6 @@
     pub fn add_file(
         &mut self,
         filename: &HgPath,
-        old_state: EntryState,
         entry: DirstateEntry,
         // XXX once the dust settle this should probably become an enum
         from_p2: bool,
@@ -91,7 +90,10 @@
             entry.size = entry.size & V1_RANGEMASK;
             entry.mtime = entry.mtime & V1_RANGEMASK;
         }
-
+        let old_state = match self.get(filename) {
+            Some(e) => e.state,
+            None => EntryState::Unknown,
+        };
         if old_state == EntryState::Unknown || old_state == EntryState::Removed
         {
             if let Some(ref mut dirs) = self.dirs {
@@ -397,7 +399,6 @@
 
         map.add_file(
             HgPath::new(b"meh"),
-            EntryState::Normal,
             DirstateEntry {
                 state: EntryState::Normal,
                 mode: 1337,

--- a/rust/hg-core/src/dirstate_tree/dirstate_map.rs	Sat Jul 03 20:57:44 2021 +0200
+++ b/rust/hg-core/src/dirstate_tree/dirstate_map.rs	Sat Jul 03 20:59:26 2021 +0200
@@ -721,7 +721,6 @@
     fn add_file(
         &mut self,
         filename: &HgPath,
-        old_state: EntryState,
         entry: DirstateEntry,
         from_p2: bool,
         possibly_dirty: bool,
@@ -744,6 +743,11 @@
             entry.mtime = entry.mtime & V1_RANGEMASK;
         }
 
+        let old_state = match self.get(filename)? {
+            Some(e) => e.state,
+            None => EntryState::Unknown,
+        };
+
         Ok(self.add_or_remove_file(filename, old_state, entry)?)
     }
 

--- a/rust/hg-core/src/dirstate_tree/dispatch.rs	Sat Jul 03 20:57:44 2021 +0200
+++ b/rust/hg-core/src/dirstate_tree/dispatch.rs	Sat Jul 03 20:59:26 2021 +0200
@@ -47,7 +47,6 @@
     fn add_file(
         &mut self,
         filename: &HgPath,
-        old_state: EntryState,
         entry: DirstateEntry,
         from_p2: bool,
         possibly_dirty: bool,
@@ -287,12 +286,11 @@
     fn add_file(
         &mut self,
         filename: &HgPath,
-        old_state: EntryState,
         entry: DirstateEntry,
         from_p2: bool,
         possibly_dirty: bool,
     ) -> Result<(), DirstateError> {
-        self.add_file(filename, old_state, entry, from_p2, possibly_dirty)
+        self.add_file(filename, entry, from_p2, possibly_dirty)
     }
 
     fn remove_file(

--- a/rust/hg-cpython/src/dirstate/dirstate_map.rs	Sat Jul 03 20:57:44 2021 +0200
+++ b/rust/hg-cpython/src/dirstate/dirstate_map.rs	Sat Jul 03 20:59:26 2021 +0200
@@ -108,7 +108,6 @@
     def addfile(
         &self,
         f: PyObject,
-        oldstate: PyObject,
         state: PyObject,
         mode: PyObject,
         size: PyObject,
@@ -118,11 +117,6 @@
     ) -> PyResult<PyObject> {
         let f = f.extract::<PyBytes>(py)?;
         let filename = HgPath::new(f.data(py));
-        let oldstate = oldstate.extract::<PyBytes>(py)?.data(py)[0]
-            .try_into()
-            .map_err(|e: HgError| {
-                PyErr::new::<exc::ValueError, _>(py, e.to_string())
-            })?;
         let state = state.extract::<PyBytes>(py)?.data(py)[0]
             .try_into()
             .map_err(|e: HgError| {
@@ -151,7 +145,6 @@
         let possibly_dirty = possibly_dirty.extract::<PyBool>(py)?.is_true();
         self.inner(py).borrow_mut().add_file(
             filename,
-            oldstate,
             entry,
             from_p2,
             possibly_dirty

--- a/rust/hg-cpython/src/dirstate/dispatch.rs	Sat Jul 03 20:57:44 2021 +0200
+++ b/rust/hg-cpython/src/dirstate/dispatch.rs	Sat Jul 03 20:59:26 2021 +0200
@@ -24,18 +24,12 @@
     fn add_file(
         &mut self,
         filename: &HgPath,
-        old_state: EntryState,
         entry: DirstateEntry,
         from_p2: bool,
         possibly_dirty: bool,
     ) -> Result<(), DirstateError> {
-        self.get_mut().add_file(
-            filename,
-            old_state,
-            entry,
-            from_p2,
-            possibly_dirty,
-        )
+        self.get_mut()
+            .add_file(filename, entry, from_p2, possibly_dirty)
     }
 
     fn remove_file(