Debugger: Hide PdbEngine infrastructure from itself

Debuggers running inside the debugged application are weird.

Change-Id: I2452e3653221c8f585123852ea113bd2fdfd08ed
Reviewed-by: hjk <hjk@theqtcompany.com>

share/qtcreator/debugger/pdbbridge.py

@@ -5,6 +5,7 @@ import linecache
 import inspect
 import os
 
+def qdebug(cmd, args):
   class Dumper:
     def __init__(self):
         pass
@@ -273,12 +274,7 @@ class Dumper:
         sys.stdout.write("@\n" + stuff + "@\n")
         sys.stdout.flush()
 
-def qdebug(options = None,
-            expanded = None,
-            typeformats = None,
-            individualformats = None,
-            watchers = None):
-    sys.stdout.write("\n(Pdb)\n")
-    sys.stdout.flush()
 
-theDumper = Dumper()
+  d = Dumper()
+  method = getattr(d, cmd)
+  method(args)

src/plugins/debugger/pdb/pdbengine.cpp

@@ -135,7 +135,7 @@ void PdbEngine::postCommand(const QByteArray &command, DebuggerCommand::Callback
 void PdbEngine::runCommand(const DebuggerCommand &cmd)
 {
     QTC_ASSERT(m_pdbProc.state() == QProcess::Running, notifyEngineIll());
-    QByteArray command = "theDumper." + cmd.function + "({" + cmd.args + "})";
+    QByteArray command = "qdebug('" + cmd.function + "',{" + cmd.args + "})";
     showMessage(_(command), LogInput);
     m_pdbProc.write(command + '\n');
 }
@@ -734,8 +734,7 @@ void PdbEngine::handleUpdateAll(const DebuggerResponse &response)
 
 void PdbEngine::updateAll()
 {
-    postCommand("dir()");
+    postCommand("qdebug('stackListFrames',{})");
-    postCommand("theDumper.stackListFrames({})");
     updateLocals();
 }