<rdar://problem/12523238> Commit 1 of 3

This commit enables the new HasChildren() feature for synthetic children providers
Namely, it hooks up the required bits and pieces so that individual synthetic children providers can implement a new (optional) has_children call
Default implementations have been provided where necessary so that any existing providers continue to work and behave correctly

Next steps are:
2) writing smart implementations of has_children for our providers whenever possible
3) make a test case

llvm-svn: 166495

1 files changed, 36 insertions, 0 deletions

diff --git a/lldb/source/Core/CXXFormatterFunctions.cpp b/lldb/source/Core/CXXFormatterFunctions.cpp
index 67f769805ea..bc205b194a8 100644
--- a/lldb/source/Core/CXXFormatterFunctions.cpp
+++ b/lldb/source/Core/CXXFormatterFunctions.cpp
@@ -773,6 +773,12 @@ lldb_private::formatters::NSArrayMSyntheticFrontEnd::Update()
     return false;
 }
 
+bool
+lldb_private::formatters::NSArrayMSyntheticFrontEnd::MightHaveChildren ()
+{
+    return CalculateNumChildren() > 0;
+}
+
 static uint32_t
 ExtractIndexFromString (const char* item_name)
 {
@@ -882,6 +888,12 @@ lldb_private::formatters::NSArrayISyntheticFrontEnd::Update()
     return false;
 }
 
+bool
+lldb_private::formatters::NSArrayISyntheticFrontEnd::MightHaveChildren ()
+{
+    return CalculateNumChildren() > 0;
+}
+
 lldb::ValueObjectSP
 lldb_private::formatters::NSArrayISyntheticFrontEnd::GetChildAtIndex (uint32_t idx)
 {
@@ -976,6 +988,12 @@ lldb_private::formatters::NSArrayCodeRunningSyntheticFrontEnd::Update()
     return false;
 }
 
+bool
+lldb_private::formatters::NSArrayCodeRunningSyntheticFrontEnd::MightHaveChildren ()
+{
+    return CalculateNumChildren() > 0;
+}
+
 uint32_t
 lldb_private::formatters::NSArrayCodeRunningSyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name)
 {
@@ -1067,6 +1085,12 @@ lldb_private::formatters::NSDictionaryCodeRunningSyntheticFrontEnd::Update()
     return false;
 }
 
+bool
+lldb_private::formatters::NSDictionaryCodeRunningSyntheticFrontEnd::MightHaveChildren ()
+{
+    return CalculateNumChildren() > 0;
+}
+
 uint32_t
 lldb_private::formatters::NSDictionaryCodeRunningSyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name)
 {
@@ -1159,6 +1183,12 @@ lldb_private::formatters::NSDictionaryISyntheticFrontEnd::Update()
     return false;
 }
 
+bool
+lldb_private::formatters::NSDictionaryISyntheticFrontEnd::MightHaveChildren ()
+{
+    return CalculateNumChildren() > 0;
+}
+
 lldb::ValueObjectSP
 lldb_private::formatters::NSDictionaryISyntheticFrontEnd::GetChildAtIndex (uint32_t idx)
 {
@@ -1300,6 +1330,12 @@ lldb_private::formatters::NSDictionaryMSyntheticFrontEnd::Update()
     return false;
 }
 
+bool
+lldb_private::formatters::NSDictionaryMSyntheticFrontEnd::MightHaveChildren ()
+{
+    return CalculateNumChildren() > 0;
+}
+
 lldb::ValueObjectSP
 lldb_private::formatters::NSDictionaryMSyntheticFrontEnd::GetChildAtIndex (uint32_t idx)
 {