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Bug 959480 - Add lldb synthetic children for nsTArray and friends. r=ehsan

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This commit is contained in:
Cameron McCormack 2014-01-15 11:30:10 +11:00
parent bc86bc0104
commit c1c73f3b83
1 changed files with 31 additions and 0 deletions
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31
python/lldbutils/lldbutils/general.py
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@ -6,6 +6,37 @@ def summarize_string(valobj, internal_dict):
length = valobj.GetChildMemberWithName("mLength").GetValueAsUnsigned(0)
return utils.format_string(data, length)
class TArraySyntheticChildrenProvider:
def __init__(self, valobj, internal_dict):
self.valobj = valobj
self.header = self.valobj.GetChildMemberWithName("mHdr")
self.element_type = self.valobj.GetType().GetTemplateArgumentType(0)
self.element_size = self.element_type.GetByteSize()
header_size = self.header.GetType().GetPointeeType().GetByteSize()
self.element_base_addr = self.header.GetValueAsUnsigned(0) + header_size
def num_children(self):
return self.header.Dereference().GetChildMemberWithName("mLength").GetValueAsUnsigned(0)
def get_child_index(self, name):
try:
index = int(name)
if index >= self.num_children():
return None
except:
pass
return None
def get_child_at_index(self, index):
if index >= self.num_children():
return None
addr = self.element_base_addr + index * self.element_size
return self.valobj.CreateValueFromAddress("[%d]" % index, addr, self.element_type)
def init(debugger):
debugger.HandleCommand("type summary add nsAString_internal -F lldbutils.general.summarize_string")
debugger.HandleCommand("type summary add nsACString_internal -F lldbutils.general.summarize_string")
debugger.HandleCommand("type synthetic add -x \"nsTArray<\" -l lldbutils.general.TArraySyntheticChildrenProvider")
debugger.HandleCommand("type synthetic add -x \"nsAutoTArray<\" -l lldbutils.general.TArraySyntheticChildrenProvider")
debugger.HandleCommand("type synthetic add -x \"FallibleTArray<\" -l lldbutils.general.TArraySyntheticChildrenProvider")
debugger.HandleCommand("type synthetic add -x \"AutoFallibleTArray<\" -l lldbutils.general.TArraySyntheticChildrenProvider")