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author | Benjamin Kramer <benny.kra@googlemail.com> | 2012-01-17 14:52:12 +0000 |
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committer | Benjamin Kramer <benny.kra@googlemail.com> | 2012-01-17 14:52:12 +0000 |
commit | f61f22a5d1fffc6b83679f5b666f4afb787f6ae5 (patch) | |
tree | 69e201041635cf3dfd45da8660f3b354fbc0cad0 | |
parent | 44b920fac47e8047acd0ffdbd3b169b4fdfed06b (diff) | |
download | external_llvm-f61f22a5d1fffc6b83679f5b666f4afb787f6ae5.zip external_llvm-f61f22a5d1fffc6b83679f5b666f4afb787f6ae5.tar.gz external_llvm-f61f22a5d1fffc6b83679f5b666f4afb787f6ae5.tar.bz2 |
Add an LLDB data formatter script for llvm::SmallVector, maybe this is helpful to someone else.
This lets lldb give sane output for SmallVectors, e.g.
Before:
(lldb) p sv
(llvm::SmallVector<int, 10>) $0 = {
(llvm::SmallVectorImpl<int>) llvm::SmallVectorImpl<int> = {
(llvm::SmallVectorTemplateBase<int>) llvm::SmallVectorTemplateBase<int> = {
(llvm::SmallVectorTemplateCommon<int>) llvm::SmallVectorTemplateCommon<int> = {
(llvm::SmallVectorBase) llvm::SmallVectorBase = {
(void *) BeginX = 0x00007fff5fbff960
...
}
After:
(lldb) p sv
(llvm::SmallVector<int, 10>) $0 = {
(int) [0] = 42
(int) [1] = 23
...
}
The script is still a bit rough so expect crashes for vectors of complex types.
Synthetic children are _not_ available in xcode 4.2, newer LLDBs should work though.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148308 91177308-0d34-0410-b5e6-96231b3b80d8
-rw-r--r-- | utils/lldbDataFormatters.py | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/utils/lldbDataFormatters.py b/utils/lldbDataFormatters.py new file mode 100644 index 0000000..18b407a --- /dev/null +++ b/utils/lldbDataFormatters.py @@ -0,0 +1,53 @@ +""" +Load into LLDB with: +script import lldbDataFormatters +type synthetic add -x "^llvm::SmallVectorImpl<.+>$" -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() |