[PATCH 5/6] Move DAP breakpoint event code to breakpoint.py

[Tom Tromey <tromey@adacore.com>]

A subsequent patch will add the ability to suppress breakpoint events
to DAP.  My first attempt at this ended up with recurse imports, cause
Python failures.  So, this patch moves all the DAP breakpoint event
code to breakpoint.py in preparation for the change.

I've renamed breakpoint_descriptor here as well, because it can now be
private to breakpoint.py.
---
 gdb/python/lib/gdb/dap/breakpoint.py | 42 ++++++++++++++++++++++++++++++++++--
 gdb/python/lib/gdb/dap/events.py     | 37 -------------------------------
 2 files changed, 40 insertions(+), 39 deletions(-)

diff --git a/gdb/python/lib/gdb/dap/breakpoint.py b/gdb/python/lib/gdb/dap/breakpoint.py
index 27745ebfd2c..4a1c98efd87 100644
--- a/gdb/python/lib/gdb/dap/breakpoint.py
+++ b/gdb/python/lib/gdb/dap/breakpoint.py
@@ -25,6 +25,44 @@ from .startup import send_gdb_with_response, in_gdb_thread, log_stack
 from .typecheck import type_check
 
 
+@in_gdb_thread
+def _bp_modified(event):
+    send_event(
+        "breakpoint",
+        {
+            "reason": "changed",
+            "breakpoint": _breakpoint_descriptor(event),
+        },
+    )
+
+
+@in_gdb_thread
+def _bp_created(event):
+    send_event(
+        "breakpoint",
+        {
+            "reason": "new",
+            "breakpoint": _breakpoint_descriptor(event),
+        },
+    )
+
+
+@in_gdb_thread
+def _bp_deleted(event):
+    send_event(
+        "breakpoint",
+        {
+            "reason": "removed",
+            "breakpoint": _breakpoint_descriptor(event),
+        },
+    )
+
+
+gdb.events.breakpoint_created.connect(_bp_created)
+gdb.events.breakpoint_modified.connect(_bp_modified)
+gdb.events.breakpoint_deleted.connect(_bp_deleted)
+
+
 # Map from the breakpoint "kind" (like "function") to a second map, of
 # breakpoints of that type.  The second map uses the breakpoint spec
 # as a key, and the gdb.Breakpoint itself as a value.  This is used to
@@ -34,7 +72,7 @@ breakpoint_map = {}
 
 
 @in_gdb_thread
-def breakpoint_descriptor(bp):
+def _breakpoint_descriptor(bp):
     "Return the Breakpoint object descriptor given a gdb Breakpoint."
     result = {
         "id": bp.number,
@@ -115,7 +153,7 @@ def _set_breakpoints_callback(kind, specs, creator):
 
             # Reaching this spot means success.
             breakpoint_map[kind][keyspec] = bp
-            result.append(breakpoint_descriptor(bp))
+            result.append(_breakpoint_descriptor(bp))
         # Exceptions other than gdb.error are possible here.
         except Exception as e:
             log_stack()
diff --git a/gdb/python/lib/gdb/dap/events.py b/gdb/python/lib/gdb/dap/events.py
index c1631442746..50ab038e91d 100644
--- a/gdb/python/lib/gdb/dap/events.py
+++ b/gdb/python/lib/gdb/dap/events.py
@@ -18,7 +18,6 @@ import gdb
 
 from .server import send_event
 from .startup import in_gdb_thread, Invoker, log
-from .breakpoint import breakpoint_descriptor
 from .modules import is_module, make_module
 
 
@@ -35,39 +34,6 @@ def _on_exit(event):
     )
 
 
-@in_gdb_thread
-def _bp_modified(event):
-    send_event(
-        "breakpoint",
-        {
-            "reason": "changed",
-            "breakpoint": breakpoint_descriptor(event),
-        },
-    )
-
-
-@in_gdb_thread
-def _bp_created(event):
-    send_event(
-        "breakpoint",
-        {
-            "reason": "new",
-            "breakpoint": breakpoint_descriptor(event),
-        },
-    )
-
-
-@in_gdb_thread
-def _bp_deleted(event):
-    send_event(
-        "breakpoint",
-        {
-            "reason": "removed",
-            "breakpoint": breakpoint_descriptor(event),
-        },
-    )
-
-
 @in_gdb_thread
 def _new_thread(event):
     send_event(
@@ -169,9 +135,6 @@ def _on_stop(event):
 
 gdb.events.stop.connect(_on_stop)
 gdb.events.exited.connect(_on_exit)
-gdb.events.breakpoint_created.connect(_bp_created)
-gdb.events.breakpoint_modified.connect(_bp_modified)
-gdb.events.breakpoint_deleted.connect(_bp_deleted)
 gdb.events.new_thread.connect(_new_thread)
 gdb.events.cont.connect(_cont)
 gdb.events.new_objfile.connect(_new_objfile)

-- 
2.40.1