forked from OSchip/llvm-project
141 lines
5.2 KiB
Python
141 lines
5.2 KiB
Python
"""
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LLDB Formatters for LLVM data types.
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Load into LLDB with 'command script import /path/to/lldbDataFormatters.py'
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"""
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def __lldb_init_module(debugger, internal_dict):
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debugger.HandleCommand('type category define -e llvm -l c++')
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debugger.HandleCommand('type synthetic add -w llvm '
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'-l lldbDataFormatters.SmallVectorSynthProvider '
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'-x "^llvm::SmallVectorImpl<.+>$"')
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debugger.HandleCommand('type synthetic add -w llvm '
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'-l lldbDataFormatters.SmallVectorSynthProvider '
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'-x "^llvm::SmallVector<.+,.+>$"')
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debugger.HandleCommand('type synthetic add -w llvm '
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'-l lldbDataFormatters.ArrayRefSynthProvider '
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'-x "^llvm::ArrayRef<.+>$"')
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debugger.HandleCommand('type summary add -w llvm '
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'-F lldbDataFormatters.OptionalSummaryProvider '
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'-x "^llvm::Optional<.+>$"')
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debugger.HandleCommand('type summary add -w llvm '
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'-F lldbDataFormatters.SmallStringSummaryProvider '
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'-x "^llvm::SmallString<.+>$"')
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debugger.HandleCommand('type summary add -w llvm '
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'-F lldbDataFormatters.StringRefSummaryProvider '
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'-x "^llvm::StringRef$"')
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debugger.HandleCommand('type summary add -w llvm '
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'-F lldbDataFormatters.ConstStringSummaryProvider '
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'-x "^lldb_private::ConstString$"')
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# Pretty printer for llvm::SmallVector/llvm::SmallVectorImpl
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class SmallVectorSynthProvider:
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def __init__(self, valobj, dict):
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self.valobj = valobj;
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self.update() # initialize this provider
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def num_children(self):
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return self.size.GetValueAsUnsigned(0)
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def get_child_index(self, name):
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try:
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return int(name.lstrip('[').rstrip(']'))
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except:
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return -1;
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def get_child_at_index(self, index):
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# Do bounds checking.
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if index < 0:
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return None
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if index >= self.num_children():
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return None;
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offset = index * self.type_size
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return self.begin.CreateChildAtOffset('['+str(index)+']',
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offset, self.data_type)
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def update(self):
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self.begin = self.valobj.GetChildMemberWithName('BeginX')
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self.size = self.valobj.GetChildMemberWithName('Size')
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the_type = self.valobj.GetType()
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# If this is a reference type we have to dereference it to get to the
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# template parameter.
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if the_type.IsReferenceType():
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the_type = the_type.GetDereferencedType()
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self.data_type = the_type.GetTemplateArgumentType(0)
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self.type_size = self.data_type.GetByteSize()
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assert self.type_size != 0
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class ArrayRefSynthProvider:
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""" Provider for llvm::ArrayRef """
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def __init__(self, valobj, dict):
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self.valobj = valobj;
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self.update() # initialize this provider
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def num_children(self):
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return self.length
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def get_child_index(self, name):
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try:
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return int(name.lstrip('[').rstrip(']'))
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except:
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return -1;
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def get_child_at_index(self, index):
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if index < 0 or index >= self.num_children():
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return None;
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offset = index * self.type_size
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return self.data.CreateChildAtOffset('[' + str(index) + ']',
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offset, self.data_type)
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def update(self):
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self.data = self.valobj.GetChildMemberWithName('Data')
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length_obj = self.valobj.GetChildMemberWithName('Length')
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self.length = length_obj.GetValueAsUnsigned(0)
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self.data_type = self.data.GetType().GetPointeeType()
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self.type_size = self.data_type.GetByteSize()
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assert self.type_size != 0
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def OptionalSummaryProvider(valobj, internal_dict):
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storage = valobj.GetChildMemberWithName('Storage')
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if not storage:
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storage = valobj
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failure = 2
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hasVal = storage.GetChildMemberWithName('hasVal').GetValueAsUnsigned(failure)
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if hasVal == failure:
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return '<could not read llvm::Optional>'
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if hasVal == 0:
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return 'None'
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underlying_type = storage.GetType().GetTemplateArgumentType(0)
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storage = storage.GetChildMemberWithName('storage')
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return str(storage.Cast(underlying_type))
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def SmallStringSummaryProvider(valobj, internal_dict):
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num_elements = valobj.GetNumChildren()
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res = "\""
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for i in range(0, num_elements):
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res += valobj.GetChildAtIndex(i).GetValue().strip("'")
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res += "\""
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return res
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def StringRefSummaryProvider(valobj, internal_dict):
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if valobj.GetNumChildren() == 2:
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# StringRef's are also used to point at binary blobs in memory,
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# so filter out suspiciously long strings.
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max_length = 256
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length = valobj.GetChildAtIndex(1).GetValueAsUnsigned(max_length)
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if length == 0:
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return "NULL"
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if length < max_length:
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return valobj.GetChildAtIndex(0).GetSummary()
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return ""
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def ConstStringSummaryProvider(valobj, internal_dict):
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if valobj.GetNumChildren() == 1:
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return valobj.GetChildAtIndex(0).GetSummary()
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return ""
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