[PATCH RFC 23/32] python//machine.py: reorder __init__

[John Snow]

Put the init arg handling all at the top, and mostly in order (deviating
when one is dependent on another), and put what is effectively runtime
state declaration at the bottom.

Signed-off-by: John Snow <address@hidden>
---
 python/qemu/lib/machine.py | 29 +++++++++++++++++------------
 1 file changed, 17 insertions(+), 12 deletions(-)

diff --git a/python/qemu/lib/machine.py b/python/qemu/lib/machine.py
index 6a4aea7725..beb31be453 100644
--- a/python/qemu/lib/machine.py
+++ b/python/qemu/lib/machine.py
@@ -80,38 +80,43 @@ def __init__(self, binary, args=None, wrapper=None, 
name=None,
         @param socket_scm_helper: helper program, required for send_fd_scm()
         @note: Qemu process is not started until launch() is used.
         '''
+        # Direct user configuration
+
+        self._binary = binary
+
         if args is None:
             args = []
+        # Copy mutable input: we will be modifying our copy
+        self._args = list(args)
+
         if wrapper is None:
             wrapper = []
-        if name is None:
-            name = "qemu-%d" % os.getpid()
-        if sock_dir is None:
-            sock_dir = test_dir
-        self._name = name
+        self._wrapper = wrapper
+
+        self._name = name or "qemu-%d" % os.getpid()
+        self._test_dir = test_dir
+        self._sock_dir = sock_dir or self._test_dir
+        self._socket_scm_helper = socket_scm_helper
+
         if monitor_address is not None:
             self._monitor_address = monitor_address
             self._remove_monitor_sockfile = False
         else:
             self._monitor_address = os.path.join(
-                sock_dir, f"{name}-monitor.sock"
+                self._sock_dir, f"{self._name}-monitor.sock"
             )
             self._remove_monitor_sockfile = True
+
+        # Runstate
         self._qemu_log_path = None
         self._qemu_log_file = None
         self._popen = None
-        self._binary = binary
-        self._args = list(args)     # Force copy args in case we modify them
-        self._wrapper = wrapper
         self._events = []
         self._iolog = None
-        self._socket_scm_helper = socket_scm_helper
         self._qmp_set = True   # Enable QMP monitor by default.
         self._qmp = None
         self._qemu_full_args = None
-        self._test_dir = test_dir
         self._temp_dir = None
-        self._sock_dir = sock_dir
         self._launched = False
         self._machine = None
         self._console_index = 0
-- 
2.21.1