Made a ModuleSpec class in Module.h which can specify a module using one or
more of the local path, platform path, associated symbol file, UUID, arch,
object name and object offset. This allows many of the calls that were
GetSharedModule to reduce the number of arguments that were used in a call
to these functions. It also allows a module to be created with a ModuleSpec
which allows many things to be specified prior to any accessors being called
on the Module class itself. 

I was running into problems when adding support for "target symbol add"
where you can specify a stand alone debug info file after debugging has started
where I needed to specify the associated symbol file path and if I waited until
after construction, the wrong  symbol file had already been located. By using
the ModuleSpec it allows us to construct a module with as little or as much
information as needed and not have to change the parameter list.



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@151476 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/Target/Target.cpp b/source/Target/Target.cpp
index 3a26b77..9b171d7 100644
--- a/source/Target/Target.cpp
+++ b/source/Target/Target.cpp
@@ -849,8 +849,8 @@
                 else
                     platform_dependent_file_spec = dependent_file_spec;
 
-                ModuleSP image_module_sp(GetSharedModule (platform_dependent_file_spec,
-                                                          m_arch));
+                ModuleSpec module_spec (platform_dependent_file_spec, m_arch);
+                ModuleSP image_module_sp(GetSharedModule (module_spec));
                 if (image_module_sp.get())
                 {
                     ObjectFile *objfile = image_module_sp->GetObjectFile();
@@ -893,16 +893,12 @@
         
         if (executable_sp)
         {
-            FileSpec exec_file_spec = executable_sp->GetFileSpec();
-            Error error = ModuleList::GetSharedModule(exec_file_spec, 
-                                                      arch_spec, 
-                                                      NULL, 
-                                                      NULL, 
-                                                      0, 
-                                                      executable_sp, 
-                                                      &GetExecutableSearchPaths(),
-                                                      NULL, 
-                                                      NULL);
+            ModuleSpec module_spec (executable_sp->GetFileSpec(), arch_spec);
+            Error error = ModuleList::GetSharedModule (module_spec, 
+                                                       executable_sp, 
+                                                       &GetExecutableSearchPaths(),
+                                                       NULL, 
+                                                       NULL);
                                           
             if (!error.Fail() && executable_sp)
             {
@@ -964,7 +960,7 @@
 
 
 bool
-Target::ModuleIsExcludedForNonModuleSpecificSearches (const FileSpec &module_spec)
+Target::ModuleIsExcludedForNonModuleSpecificSearches (const FileSpec &module_file_spec)
 {
 
     if (!m_breakpoints_use_platform_avoid)
@@ -972,10 +968,8 @@
     else
     {
         ModuleList matchingModules;
-        const ArchSpec *arch_ptr = NULL;
-        const lldb_private::UUID *uuid_ptr= NULL;
-        const ConstString *object_name = NULL;
-        size_t num_modules = GetImages().FindModules(&module_spec, arch_ptr, uuid_ptr, object_name, matchingModules);
+        ModuleSpec module_spec (module_file_spec);
+        size_t num_modules = GetImages().FindModules(module_spec, matchingModules);
         
         // If there is more than one module for this file spec, only return true if ALL the modules are on the
         // black list.
@@ -1238,15 +1232,7 @@
 }
 
 ModuleSP
-Target::GetSharedModule
-(
-    const FileSpec& file_spec,
-    const ArchSpec& arch,
-    const lldb_private::UUID *uuid_ptr,
-    const ConstString *object_name,
-    off_t object_offset,
-    Error *error_ptr
-)
+Target::GetSharedModule (const ModuleSpec &module_spec, Error *error_ptr)
 {
     // Don't pass in the UUID so we can tell if we have a stale value in our list
     ModuleSP old_module_sp; // This will get filled in if we have a new version of the library
@@ -1258,15 +1244,11 @@
     // If there are image search path entries, try to use them first to acquire a suitable image.
     if (m_image_search_paths.GetSize())
     {
-        FileSpec transformed_spec;        
-        if (m_image_search_paths.RemapPath (file_spec.GetDirectory(), transformed_spec.GetDirectory()))
+        ModuleSpec transformed_spec (module_spec);
+        if (m_image_search_paths.RemapPath (module_spec.GetFileSpec().GetDirectory(), transformed_spec.GetFileSpec().GetDirectory()))
         {
-            transformed_spec.GetFilename() = file_spec.GetFilename();
+            transformed_spec.GetFileSpec().GetFilename() = module_spec.GetFileSpec().GetFilename();
             error = ModuleList::GetSharedModule (transformed_spec, 
-                                                 arch, 
-                                                 uuid_ptr, 
-                                                 object_name, 
-                                                 object_offset, 
                                                  module_sp, 
                                                  &GetExecutableSearchPaths(),
                                                  &old_module_sp, 
@@ -1279,11 +1261,7 @@
     if (m_platform_sp)
     {
         FileSpec platform_file_spec;        
-        error = m_platform_sp->GetSharedModule (file_spec, 
-                                                arch, 
-                                                uuid_ptr, 
-                                                object_name, 
-                                                object_offset, 
+        error = m_platform_sp->GetSharedModule (module_spec, 
                                                 module_sp, 
                                                 &GetExecutableSearchPaths(),
                                                 &old_module_sp,