Add LLDB dataformatters for llvm::StringRef and lldb_private::ConstString

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.

Differential Revision: https://reviews.llvm.org/D66354

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@369175 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Adrian Prantl 2019-08-16 23:47:57 +00:00
parent 5b584120e8
commit 42e3d15bdf

View File

@ -21,6 +21,12 @@ def __lldb_init_module(debugger, internal_dict):
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 +121,20 @@ def SmallStringSummaryProvider(valobj, internal_dict):
res += valobj.GetChildAtIndex(i).GetValue().strip("'")
res += "\""
return res
def StringRefSummaryProvider(valobj, internal_dict):
if valobj.GetNumChildren() == 2:
# StringRef's are also used to point at binary blobs in memory,
# so filter out suspiciously long strings.
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 ""