| """ |
| Load into LLDB with: |
| script import lldbDataFormatters |
| type synthetic add -x "^llvm::SmallVectorImpl<.+>$" -l lldbDataFormatters.SmallVectorSynthProvider |
| """ |
| |
| # Pretty printer for llvm::SmallVector/llvm::SmallVectorImpl |
| class SmallVectorSynthProvider: |
| def __init__(self, valobj, dict): |
| self.valobj = valobj; |
| self.update() # initialize this provider |
| |
| def num_children(self): |
| begin = self.begin.GetValueAsUnsigned(0) |
| end = self.end.GetValueAsUnsigned(0) |
| return (end - begin)/self.type_size |
| |
| def get_child_index(self, name): |
| try: |
| return int(name.lstrip('[').rstrip(']')) |
| except: |
| return -1; |
| |
| def get_child_at_index(self, index): |
| # Do bounds checking. |
| if index < 0: |
| return None |
| if index >= self.num_children(): |
| return None; |
| |
| offset = index * self.type_size |
| return self.begin.CreateChildAtOffset('['+str(index)+']', |
| offset, self.data_type) |
| |
| def get_type_from_name(self): |
| import re |
| name = self.valobj.GetType().GetName() |
| # This class works with both SmallVectors and SmallVectorImpls. |
| res = re.match("^(llvm::)?SmallVectorImpl<(.+)>$", name) |
| if res: |
| return res.group(2) |
| res = re.match("^(llvm::)?SmallVector<(.+), \d+>$", name) |
| if res: |
| return res.group(2) |
| return None |
| |
| def update(self): |
| self.begin = self.valobj.GetChildMemberWithName('BeginX') |
| self.end = self.valobj.GetChildMemberWithName('EndX') |
| data_type = self.get_type_from_name() |
| # FIXME: this sometimes returns an invalid type. |
| self.data_type = self.valobj.GetTarget().FindFirstType(data_type) |
| self.type_size = self.data_type.GetByteSize() |
