[utils/ClangDataFormat.py] Add data formatter for StringRef.

llvm-svn: 168003

diff --git a/clang/utils/ClangDataFormat.py b/clang/utils/ClangDataFormat.py
index 817c0b6..bde3811 100644 (file)
--- a/clang/utils/ClangDataFormat.py
+++ b/clang/utils/ClangDataFormat.py
@@ -23,10 +23,14 @@ import lldb
 
 def __lldb_init_module(debugger, internal_dict):
        debugger.HandleCommand("type summary add -F ClangDataFormat.SourceLocation_summary clang::SourceLocation")
+       debugger.HandleCommand("type summary add -F ClangDataFormat.StringRef_summary llvm::StringRef")
 
 def SourceLocation_summary(srcloc, internal_dict):
        return SourceLocation(srcloc).summary()
 
+def StringRef_summary(strref, internal_dict):
+       return StringRef(strref).summary()
+
 class SourceLocation(object):
        def __init__(self, srcloc):
                self.srcloc = srcloc
@@ -51,6 +55,23 @@ class SourceLocation(object):
                        desc = "%s (offset: %d, %s, %s)" % (self.getPrint(srcmgr_path), self.offset(), "macro" if self.isMacro() else "file", "local" if self.isLocal(srcmgr_path) else "loaded")
                return desc
 
+class StringRef(object):
+       def __init__(self, strref):
+               self.strref = strref
+               self.Data_value = strref.GetChildAtIndex(0)
+               self.Length = strref.GetChildAtIndex(1).GetValueAsUnsigned()
+
+       def summary(self):
+               if self.Length == 0:
+                       return '""'
+               data = self.Data_value.GetPointeeData(0, self.Length)
+               error = lldb.SBError()
+               string = data.ReadRawData(error, 0, data.GetByteSize())
+               if error.Fail():
+                       return None
+               return '"%s"' % string
+
+
 # Key is a (function address, type name) tuple, value is the expression path for
 # an object with such a type name from inside that function.
 FramePathMapCache = {}