Add an "Avoid Frames matching this regular expression" to ThreadPlanStepInRange.

This relies on ThreadPlanStepOut working correctly, which it doesn't currently for Inlined functions, so this feature is only partially useful until we take care of Stepping Out of inlined functions.
Added an option to "thread step-in" to set the avoid regular expression.  This is mostly for testing, once the Setting code is redone, we'll move this to a general setting.

llvm-svn: 108036

1 files changed, 50 insertions, 4 deletions

diff --git a/lldb/source/Target/ThreadPlanStepInRange.cpp b/lldb/source/Target/ThreadPlanStepInRange.cpp
index 6084b4e815f..58f61977ccd 100644
--- a/lldb/source/Target/ThreadPlanStepInRange.cpp
+++ b/lldb/source/Target/ThreadPlanStepInRange.cpp
@@ -17,11 +17,13 @@
 #include "lldb/lldb-private-log.h"
 #include "lldb/Core/Log.h"
 #include "lldb/Core/Stream.h"
+#include "lldb/Symbol/Symbol.h"
 #include "lldb/Target/Process.h"
 #include "lldb/Target/RegisterContext.h"
 #include "lldb/Target/Thread.h"
 #include "lldb/Target/ThreadPlanStepOut.h"
 #include "lldb/Target/ThreadPlanStepThrough.h"
+#include "lldb/Core/RegularExpression.h"
 
 using namespace lldb;
 using namespace lldb_private;
@@ -44,6 +46,7 @@ ThreadPlanStepInRange::ThreadPlanStepInRange
     ThreadPlanShouldStopHere (this, ThreadPlanStepInRange::DefaultShouldStopHereCallback, NULL)
 {
     SetFlagsToDefault ();
+    // SetAvoidRegexp("^std\\:\\:.*");
 }
 
 ThreadPlanStepInRange::~ThreadPlanStepInRange ()
@@ -129,6 +132,15 @@ ThreadPlanStepInRange::SetFlagsToDefault ()
     GetFlags().Set(ThreadPlanStepInRange::s_default_flag_values);
 }
 
+void 
+ThreadPlanStepInRange::SetAvoidRegexp(const char *name)
+{
+    if (m_avoid_regexp_ap.get() == NULL)
+        m_avoid_regexp_ap.reset (new RegularExpression(name));
+
+    m_avoid_regexp_ap->Compile (name);
+}
+
 void
 ThreadPlanStepInRange::SetDefaultFlagValue (uint32_t new_value)
 {
@@ -136,19 +148,53 @@ ThreadPlanStepInRange::SetDefaultFlagValue (uint32_t new_value)
     ThreadPlanStepInRange::s_default_flag_values = new_value;
 }
 
+bool
+ThreadPlanStepInRange::FrameMatchesAvoidRegexp ()
+{
+    StackFrame *frame = GetThread().GetStackFrameAtIndex(0).get();
+
+    if (m_avoid_regexp_ap.get() != NULL)
+    {
+        SymbolContext sc = frame->GetSymbolContext(eSymbolContextSymbol);
+        if (sc.symbol != NULL)
+        {
+            const char *unnamed_symbol = "<UNKNOWN>";
+            const char *sym_name = sc.symbol->GetMangled().GetName().AsCString(unnamed_symbol);
+            if (strcmp (sym_name, unnamed_symbol) != 0)
+               return m_avoid_regexp_ap->Execute(sym_name);
+        }
+    }
+    return false;
+}
+
 ThreadPlan *
 ThreadPlanStepInRange::DefaultShouldStopHereCallback (ThreadPlan *current_plan, Flags &flags, void *baton)
 {
+    bool should_step_out = false;
+    StackFrame *frame = current_plan->GetThread().GetStackFrameAtIndex(0).get();
+
     if (flags.IsSet(eAvoidNoDebug))
     {
-        StackFrame *frame = current_plan->GetThread().GetStackFrameAtIndex(0).get();
-
         if (!frame->HasDebugInformation())
+            should_step_out = true;
+    }
+    
+    if (!should_step_out)
+    {
+        if (current_plan->GetKind() == eKindStepInRange)
         {
-            // FIXME: Make sure the ThreadPlanForStepOut does the right thing with inlined functions.
-            return current_plan->GetThread().QueueThreadPlanForStepOut (false, NULL, true, current_plan->StopOthers(), eVoteNo, eVoteNoOpinion);
+            ThreadPlanStepInRange *step_in_range_plan = static_cast<ThreadPlanStepInRange *> (current_plan);
+            should_step_out = step_in_range_plan->FrameMatchesAvoidRegexp ();
         }
     }
+    
+    if (should_step_out)
+    {
+        // FIXME: Make sure the ThreadPlanForStepOut does the right thing with inlined functions.
+        return current_plan->GetThread().QueueThreadPlanForStepOut (false, NULL, true, 
+                                                                    current_plan->StopOthers(), 
+                                                                    eVoteNo, eVoteNoOpinion);
+    }
 
     return NULL;
 }