llvm-project/llvm/utils/lldbDataFormatters.py at swift-5.4-RELEASE · swiftlang/llvm-project · GitHub

Name: llvm-project/llvm/utils/lldbDataFormatters.py at swift-5.4-RELEASE · swiftlang/llvm-project · GitHub
Rating: 4.9 (7762 reviews)
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"""
LLDB Formatters for LLVM data types.

Load into LLDB with 'command script import /path/to/lldbDataFormatters.py'
"""

def__lldb_init_module(debugger, internal_dict):
debugger.HandleCommand('type category define -e llvm -l c++')
debugger.HandleCommand('type synthetic add -w llvm '
'-l lldbDataFormatters.SmallVectorSynthProvider '
'-x "^llvm::SmallVectorImpl<.+>$"')
debugger.HandleCommand('type synthetic add -w llvm '
'-l lldbDataFormatters.SmallVectorSynthProvider '
'-x "^llvm::SmallVector<.+,.+>$"')
debugger.HandleCommand('type synthetic add -w llvm '
'-l lldbDataFormatters.ArrayRefSynthProvider '
'-x "^llvm::ArrayRef<.+>$"')
debugger.HandleCommand('type summary add -w llvm '
'-F lldbDataFormatters.OptionalSummaryProvider '
'-x "^llvm::Optional<.+>$"')
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
classSmallVectorSynthProvider:
def__init__(self, valobj, dict):
self.valobj=valobj;
self.update() # initialize this provider

defnum_children(self):
returnself.size.GetValueAsUnsigned(0)

defget_child_index(self, name):
try:
returnint(name.lstrip('[').rstrip(']'))
except:
return-1;

defget_child_at_index(self, index):
# Do bounds checking.
ifindex<0:
returnNone
ifindex>=self.num_children():
returnNone;

offset=index*self.type_size
returnself.begin.CreateChildAtOffset('['+str(index)+']',
offset, self.data_type)

defupdate(self):
self.begin=self.valobj.GetChildMemberWithName('BeginX')
self.size=self.valobj.GetChildMemberWithName('Size')
the_type=self.valobj.GetType()
# If this is a reference type we have to dereference it to get to the
# template parameter.
ifthe_type.IsReferenceType():
the_type=the_type.GetDereferencedType()

self.data_type=the_type.GetTemplateArgumentType(0)
self.type_size=self.data_type.GetByteSize()
assertself.type_size!=0

classArrayRefSynthProvider:
""" Provider for llvm::ArrayRef """
def__init__(self, valobj, dict):
self.valobj=valobj;
self.update() # initialize this provider

defnum_children(self):
returnself.length

defget_child_index(self, name):
try:
returnint(name.lstrip('[').rstrip(']'))
except:
return-1;

defget_child_at_index(self, index):
ifindex<0orindex>=self.num_children():
returnNone;
offset=index*self.type_size
returnself.data.CreateChildAtOffset('['+str(index) +']',
offset, self.data_type)

defupdate(self):
self.data=self.valobj.GetChildMemberWithName('Data')
length_obj=self.valobj.GetChildMemberWithName('Length')
self.length=length_obj.GetValueAsUnsigned(0)
self.data_type=self.data.GetType().GetPointeeType()
self.type_size=self.data_type.GetByteSize()
assertself.type_size!=0

defOptionalSummaryProvider(valobj, internal_dict):
storage=valobj.GetChildMemberWithName('Storage')
ifnotstorage:
storage=valobj

failure=2
hasVal=storage.GetChildMemberWithName('hasVal').GetValueAsUnsigned(failure)
ifhasVal==failure:
return'<could not read llvm::Optional>'

ifhasVal==0:
return'None'

underlying_type=storage.GetType().GetTemplateArgumentType(0)
storage=storage.GetChildMemberWithName('storage')
returnstr(storage.Cast(underlying_type))

defSmallStringSummaryProvider(valobj, internal_dict):
num_elements=valobj.GetNumChildren()
res="\""
foriinrange(0, num_elements):
c=valobj.GetChildAtIndex(i).GetValue()
ifc:
res+=c.strip("'")
res+="\""
returnres

defStringRefSummaryProvider(valobj, internal_dict):
ifvalobj.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)
iflength==0:
return"NULL"
iflength<max_length:
returnvalobj.GetChildAtIndex(0).GetSummary()
return""

defConstStringSummaryProvider(valobj, internal_dict):
ifvalobj.GetNumChildren() ==1:
returnvalobj.GetChildAtIndex(0).GetSummary()
return""