Make the step range plans capable of supporting multiple ranges.  Also make their constructors public, there isn't any good reason why you shouldn't be able to make these plans.

git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@142026 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/Target/ThreadPlanStepRange.cpp b/source/Target/ThreadPlanStepRange.cpp
index 7dc1b7d..3e87ffe 100644
--- a/source/Target/ThreadPlanStepRange.cpp
+++ b/source/Target/ThreadPlanStepRange.cpp
@@ -41,13 +41,14 @@
                                           lldb::RunMode stop_others) :
     ThreadPlan (kind, name, thread, eVoteNoOpinion, eVoteNoOpinion),
     m_addr_context (addr_context),
-    m_address_range (range),
+    m_address_ranges (),
     m_stop_others (stop_others),
     m_stack_depth (0),
     m_stack_id (),
     m_no_more_plans (false),
     m_first_run_event (true)
 {
+    AddRange(range);
     m_stack_depth = m_thread.GetStackFrameCount();
     m_stack_id = m_thread.GetStackFrameAtIndex(0)->GetStackID();
 }
@@ -97,6 +98,33 @@
     return vote;
 }
 
+void
+ThreadPlanStepRange::AddRange(const AddressRange &new_range)
+{
+    // For now I'm just adding the ranges.  At some point we may want to 
+    // condense the ranges if they overlap, though I don't think it is likely
+    // to be very important.
+    m_address_ranges.push_back (new_range);
+}
+
+void
+ThreadPlanStepRange::DumpRanges(Stream *s)
+{
+    size_t num_ranges = m_address_ranges.size();
+    if (num_ranges == 1)
+    {
+        m_address_ranges[0].Dump (s, &m_thread.GetProcess().GetTarget(), Address::DumpStyleLoadAddress);
+    }
+    else
+    {
+        for (size_t i = 0; i < num_ranges; i++)
+        {
+            s->PutCString("%d: ");
+            m_address_ranges[i].Dump (s, &m_thread.GetProcess().GetTarget(), Address::DumpStyleLoadAddress);
+        }
+    }
+}
+
 bool
 ThreadPlanStepRange::InRange ()
 {
@@ -105,7 +133,13 @@
 
     lldb::addr_t pc_load_addr = m_thread.GetRegisterContext()->GetPC();
 
-    ret_value = m_address_range.ContainsLoadAddress(pc_load_addr, &m_thread.GetProcess().GetTarget());
+    size_t num_ranges = m_address_ranges.size();
+    for (size_t i = 0; i < num_ranges; i++)
+    {
+        ret_value = m_address_ranges[i].ContainsLoadAddress(pc_load_addr, &m_thread.GetProcess().GetTarget());
+        if (ret_value)
+            break;
+    }
     
     if (!ret_value)
     {
@@ -120,12 +154,14 @@
                 if (m_addr_context.line_entry.line == new_context.line_entry.line)
                 {
                     m_addr_context = new_context;
-                    m_address_range = m_addr_context.line_entry.range;
+                    AddRange(m_addr_context.line_entry.range);
                     ret_value = true;
                     if (log)
                     {
                         StreamString s;
-                        m_address_range.Dump (&s, &m_thread.GetProcess().GetTarget(), Address::DumpStyleLoadAddress);
+                        m_addr_context.line_entry.range.Dump (&s, 
+                                                              &m_thread.GetProcess().GetTarget(), 
+                                                              Address::DumpStyleLoadAddress);
 
                         log->Printf ("Step range plan stepped to another range of same line: %s", s.GetData());
                     }
@@ -138,12 +174,15 @@
                     // But we probably don't want to be in the middle of a line range, so in that case reset the stepping
                     // range to the line we've stepped into the middle of and continue.
                     m_addr_context = new_context;
-                    m_address_range = m_addr_context.line_entry.range;
+                    m_address_ranges.clear();
+                    AddRange(m_addr_context.line_entry.range);
                     ret_value = true;
                     if (log)
                     {
                         StreamString s;
-                        m_address_range.Dump (&s, &m_thread.GetProcess().GetTarget(), Address::DumpStyleLoadAddress);
+                        m_addr_context.line_entry.range.Dump (&s, 
+                                                              &m_thread.GetProcess().GetTarget(), 
+                                                              Address::DumpStyleLoadAddress);
 
                         log->Printf ("Step range plan stepped to the middle of new line(%d): %s, continuing to clear this line.", 
                                      new_context.line_entry.line,