[PATCH] D66354: Add LLDB dataformatters for llvm::StringRef and lldb_private::ConstString

[Adrian Prantl via Phabricator via llvm-commits]

aprantl created this revision.
aprantl added reviewers: JDevlieghere, jingham, davide.
Herald added a project: LLVM.

These data formatters make the string value appear in Xcode's variables view (and on the command line) without having to expand the data structure.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D66354

Files:
  llvm/utils/lldbDataFormatters.py


Index: llvm/utils/lldbDataFormatters.py
===================================================================
--- llvm/utils/lldbDataFormatters.py
+++ llvm/utils/lldbDataFormatters.py
@@ -21,6 +21,12 @@
     debugger.HandleCommand('type summary add -w llvm '
                            '-F lldbDataFormatters.SmallStringSummaryProvider '
                            '-x "^llvm::SmallString<.+>$"')
+    debugger.HandleCommand('type summary add -w llvm '
+                           '-F lldbDataFormatters.StringRefSummaryProvider '
+                           '-x "^llvm::StringRef$"')
+    debugger.HandleCommand('type summary add -w llvm '
+                           '-F lldbDataFormatters.ConstStringSummaryProvider '
+                           '-x "^lldb_private::ConstString$"')
 
 # Pretty printer for llvm::SmallVector/llvm::SmallVectorImpl
 class SmallVectorSynthProvider:
@@ -115,3 +121,18 @@
       res += valobj.GetChildAtIndex(i).GetValue().strip("'")
     res += "\""
     return res
+
+def StringRefSummaryProvider(valobj, internal_dict):
+    if valobj.GetNumChildren() == 2:
+        max_length = 256
+        length = valobj.GetChildAtIndex(1).GetValueAsUnsigned(max_length)
+        if length == 0:
+            return "NULL"
+        if length < max_length:
+            return valobj.GetChildAtIndex(0).GetSummary()
+    return ""
+
+def ConstStringSummaryProvider(valobj, internal_dict):
+    if valobj.GetNumChildren() == 1:
+        return valobj.GetChildAtIndex(0).GetSummary()
+    return ""


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