From fa5fd078663ed0569512c863c3c505b5e47785ae Mon Sep 17 00:00:00 2001
From: Justin Bogner <mail@justinbogner.com>
Date: Fri, 20 Feb 2015 02:55:22 +0000
Subject: [PATCH] utils: Teach lldbDataFormatters about llvm::Optional

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229956 91177308-0d34-0410-b5e6-96231b3b80d8
---
 utils/lldbDataFormatters.py | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/utils/lldbDataFormatters.py b/utils/lldbDataFormatters.py
index f570fb49f34..687729f61ed 100644
--- a/utils/lldbDataFormatters.py
+++ b/utils/lldbDataFormatters.py
@@ -15,6 +15,9 @@ def __lldb_init_module(debugger, internal_dict):
     debugger.HandleCommand('type synthetic add -w llvm '
                            '-l lldbDataFormatters.ArrayRefSynthProvider '
                            '-x "^llvm::ArrayRef<.+>$"')
+    debugger.HandleCommand('type summary add -w llvm '
+                           '-F lldbDataFormatters.OptionalSummaryProvider '
+                           '-x "^llvm::Optional<.+>$"')
 
 # Pretty printer for llvm::SmallVector/llvm::SmallVectorImpl
 class SmallVectorSynthProvider:
@@ -86,3 +89,10 @@ class ArrayRefSynthProvider:
         self.data_type = self.data.GetType().GetPointeeType()
         self.type_size = self.data_type.GetByteSize()
         assert self.type_size != 0
+
+def OptionalSummaryProvider(valobj, internal_dict):
+    if not valobj.GetChildMemberWithName('hasVal').GetValueAsUnsigned(0):
+        return 'None'
+    underlying_type = valobj.GetType().GetTemplateArgumentType(0)
+    storage = valobj.GetChildMemberWithName('storage')
+    return str(storage.Cast(underlying_type))