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

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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

llvm-svn: 369175
This commit is contained in:
Adrian Prantl 2019-08-16 23:47:57 +00:00
parent 808fb08483
commit 9683aa52f0
1 changed files with 23 additions and 0 deletions
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23
utils/lldbDataFormatters.py
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@ -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 ""