Fix weak symbol linkage in SBStructuredData, update docs.

Summary:
This change fixes an issue where I was leaking a weakly-linked symbol in
the SBAPI. It also updates the docs to call out what I did wrong.

Fixes:
rdar://28882483

Reviewers: jingham

Subscribers: lldb-commits

Differential Revision: https://reviews.llvm.org/D26470

llvm-svn: 286413

1 files changed, 26 insertions, 27 deletions

diff --git a/lldb/source/API/SBStructuredData.cpp b/lldb/source/API/SBStructuredData.cpp
index 3c04b3bbba9..d9ea072186a 100644
--- a/lldb/source/API/SBStructuredData.cpp
+++ b/lldb/source/API/SBStructuredData.cpp
@@ -20,23 +20,23 @@ using namespace lldb;
 using namespace lldb_private;
 
 #pragma mark--
-#pragma mark Impl
+#pragma mark StructuredDataImpl
 
-class SBStructuredData::Impl {
+class StructuredDataImpl {
 public:
-  Impl() : m_plugin_wp(), m_data_sp() {}
+  StructuredDataImpl() : m_plugin_wp(), m_data_sp() {}
 
-  Impl(const Impl &rhs) = default;
+  StructuredDataImpl(const StructuredDataImpl &rhs) = default;
 
-  Impl(const EventSP &event_sp)
+  StructuredDataImpl(const EventSP &event_sp)
       : m_plugin_wp(
             EventDataStructuredData::GetPluginFromEvent(event_sp.get())),
         m_data_sp(EventDataStructuredData::GetObjectFromEvent(event_sp.get())) {
   }
 
-  ~Impl() = default;
+  ~StructuredDataImpl() = default;
 
-  Impl &operator=(const Impl &rhs) = default;
+  StructuredDataImpl &operator=(const StructuredDataImpl &rhs) = default;
 
   bool IsValid() const { return m_data_sp.get() != nullptr; }
 
@@ -45,7 +45,7 @@ public:
     m_data_sp.reset();
   }
 
-  SBError GetAsJSON(lldb::SBStream &stream) const {
+  SBError GetAsJSON(lldb_private::Stream &stream) const {
     SBError sb_error;
 
     if (!m_data_sp) {
@@ -53,33 +53,29 @@ public:
       return sb_error;
     }
 
-    m_data_sp->Dump(stream.ref());
+    m_data_sp->Dump(stream);
     return sb_error;
   }
 
-  lldb::SBError GetDescription(lldb::SBStream &stream) const {
-    SBError sb_error;
+  Error GetDescription(lldb_private::Stream &stream) const {
+    Error error;
 
     if (!m_data_sp) {
-      sb_error.SetErrorString("Cannot pretty print structured data: "
-                              "no data to print.");
-      return sb_error;
+      error.SetErrorString("Cannot pretty print structured data: "
+                           "no data to print.");
+      return error;
     }
 
     // Grab the plugin.
     auto plugin_sp = StructuredDataPluginSP(m_plugin_wp);
     if (!plugin_sp) {
-      sb_error.SetErrorString("Cannot pretty print structured data: "
-                              "plugin doesn't exist.");
-      return sb_error;
+      error.SetErrorString("Cannot pretty print structured data: "
+                           "plugin doesn't exist.");
+      return error;
     }
 
     // Get the data's description.
-    auto error = plugin_sp->GetDescription(m_data_sp, stream.ref());
-    if (!error.Success())
-      sb_error.SetError(error);
-
-    return sb_error;
+    return plugin_sp->GetDescription(m_data_sp, stream);
   }
 
 private:
@@ -90,13 +86,13 @@ private:
 #pragma mark--
 #pragma mark SBStructuredData
 
-SBStructuredData::SBStructuredData() : m_impl_up(new Impl()) {}
+SBStructuredData::SBStructuredData() : m_impl_up(new StructuredDataImpl()) {}
 
 SBStructuredData::SBStructuredData(const lldb::SBStructuredData &rhs)
-    : m_impl_up(new Impl(*rhs.m_impl_up.get())) {}
+    : m_impl_up(new StructuredDataImpl(*rhs.m_impl_up.get())) {}
 
 SBStructuredData::SBStructuredData(const lldb::EventSP &event_sp)
-    : m_impl_up(new Impl(event_sp)) {}
+    : m_impl_up(new StructuredDataImpl(event_sp)) {}
 
 SBStructuredData::~SBStructuredData() {}
 
@@ -111,9 +107,12 @@ bool SBStructuredData::IsValid() const { return m_impl_up->IsValid(); }
 void SBStructuredData::Clear() { m_impl_up->Clear(); }
 
 SBError SBStructuredData::GetAsJSON(lldb::SBStream &stream) const {
-  return m_impl_up->GetAsJSON(stream);
+  return m_impl_up->GetAsJSON(stream.ref());
 }
 
 lldb::SBError SBStructuredData::GetDescription(lldb::SBStream &stream) const {
-  return m_impl_up->GetDescription(stream);
+  Error error = m_impl_up->GetDescription(stream.ref());
+  SBError sb_error;
+  sb_error.SetError(error);
+  return sb_error;
 }