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54 lines
1.8 KiB
Python
54 lines
1.8 KiB
Python
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"""
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Load into LLDB with:
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script import lldbDataFormatters
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type synthetic add -x "^llvm::SmallVectorImpl<.+>$" -l lldbDataFormatters.SmallVectorSynthProvider
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"""
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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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begin = self.begin.GetValueAsUnsigned(0)
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end = self.end.GetValueAsUnsigned(0)
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return (end - begin)/self.type_size
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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 get_type_from_name(self):
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import re
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name = self.valobj.GetType().GetName()
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# This class works with both SmallVectors and SmallVectorImpls.
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res = re.match("^(llvm::)?SmallVectorImpl<(.+)>$", name)
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if res:
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return res.group(2)
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res = re.match("^(llvm::)?SmallVector<(.+), \d+>$", name)
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if res:
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return res.group(2)
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return None
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def update(self):
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self.begin = self.valobj.GetChildMemberWithName('BeginX')
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self.end = self.valobj.GetChildMemberWithName('EndX')
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data_type = self.get_type_from_name()
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# FIXME: this sometimes returns an invalid type.
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self.data_type = self.valobj.GetTarget().FindFirstType(data_type)
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self.type_size = self.data_type.GetByteSize()
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