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-rw-r--r--utils/lldbDataFormatters.py53
1 files changed, 53 insertions, 0 deletions
diff --git a/utils/lldbDataFormatters.py b/utils/lldbDataFormatters.py
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+++ b/utils/lldbDataFormatters.py
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+"""
+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()