rust: Remove the `rustext.parsers` module

It only exported Rust implementations of the parse_dirstate and pack_dirtate
functions, which are only used (anymore) when Rust is not enabled.

fakedirstatewritetime.py was detecting the presence of `rustext.parsers`
but what it really wants to know is whether the Rust implementation of
`dirstatemap` is used. This changes it to detect `rustext.dirstate` instead.

Differential Revision: https://phab.mercurial-scm.org/D11459

rust/hg-cpython/src/dirstate/dirstate_map.rs

@@ -24,7 +24,6 b' use crate::{'
     dirstate::non_normal_entries::{
         NonNormalEntries, NonNormalEntriesIterator,
     },
-    parsers::dirstate_parents_to_pytuple,
     pybytes_deref::PyBytesDeref,
 };
 use hg::{
@@ -79,7 +78,11 b' py_class!(pub class DirstateMap |py| {'
             (Box::new(map) as _, parents)
         };
         let map = Self::create_instance(py, inner)?;
-        let parents = parents.map(|p| dirstate_parents_to_pytuple(py, &p));
+        let parents = parents.map(|p| {
+            let p1 = PyBytes::new(py, p.p1.as_bytes());
+            let p2 = PyBytes::new(py, p.p2.as_bytes());
+            (p1, p2)
+        });
         Ok((map, parents).to_py_object(py).into_object())
     }
 

rust/hg-cpython/src/lib.rs

@@ -35,7 +35,6 b' pub mod debug;'
 pub mod dirstate;
 pub mod discovery;
 pub mod exceptions;
-pub mod parsers;
 mod pybytes_deref;
 pub mod revlog;
 pub mod utils;
@@ -59,11 +58,6 b' py_module_initializer!(rustext, initrust'
     m.add(py, "discovery", discovery::init_module(py, &dotted_name)?)?;
     m.add(py, "dirstate", dirstate::init_module(py, &dotted_name)?)?;
     m.add(py, "revlog", revlog::init_module(py, &dotted_name)?)?;
-    m.add(
-        py,
-        "parsers",
-        parsers::init_parsers_module(py, &dotted_name)?,
-    )?;
     m.add(py, "GraphError", py.get_type::<exceptions::GraphError>())?;
     Ok(())
 });

tests/fakedirstatewritetime.py

@@ -34,7 +34,7 b' configitem('
 )
 
 parsers = policy.importmod('parsers')
-rustmod = policy.importrust('parsers')
+has_rust_dirstate = policy.importrust('dirstate') is not None
 
 
 def pack_dirstate(fakenow, orig, dmap, copymap, pl, now):
@@ -63,7 +63,7 b' def fakewrite(ui, func):'
     # 'fakenow' value and 'touch -t YYYYmmddHHMM' argument easy
     fakenow = dateutil.parsedate(fakenow, [b'%Y%m%d%H%M'])[0]
 
-    if rustmod is not None:
+    if has_rust_dirstate:
         # The Rust implementation does not use public parse/pack dirstate
         # to prevent conversion round-trips
         orig_dirstatemap_write = dirstatemapmod.dirstatemap.write
@@ -85,7 +85,7 b' def fakewrite(ui, func):'
     finally:
         orig_module.pack_dirstate = orig_pack_dirstate
         dirstate._getfsnow = orig_dirstate_getfsnow
-        if rustmod is not None:
+        if has_rust_dirstate:
             dirstatemapmod.dirstatemap.write = orig_dirstatemap_write