forked from OSchip/llvm-project
273 lines
8.1 KiB
Python
273 lines
8.1 KiB
Python
import re
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# C++ STL formatters for LLDB
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# These formatters are based upon the version of the GNU libstdc++
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# as it ships with Mac OS X 10.6.8 and 10.7.0
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# You are encouraged to look at the STL implementation for your platform
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# before relying on these formatters to do the right thing for your setup
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class StdListSynthProvider:
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def __init__(self, valobj, dict):
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self.valobj = valobj
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self.update()
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def num_children(self):
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try:
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next_val = self.next.GetValueAsUnsigned(0)
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prev_val = self.prev.GetValueAsUnsigned(0)
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# After a std::list has been initialized, both next and prev will be non-NULL
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if next_val == 0 or prev_val == 0:
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return 0
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if next_val == self.node_address:
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return 0
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if next_val == prev_val:
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return 1
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size = 2
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current = self.next
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while current.GetChildMemberWithName('_M_next').GetValueAsUnsigned(0) != self.node_address:
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size = size + 1
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current = current.GetChildMemberWithName('_M_next')
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return (size - 1)
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except:
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return 0;
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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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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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try:
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offset = index
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current = self.next
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while offset > 0:
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current = current.GetChildMemberWithName('_M_next')
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offset = offset - 1
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return current.CreateChildAtOffset('['+str(index)+']',2*current.GetType().GetByteSize(),self.data_type)
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except:
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return None
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def extract_type_name(self,name):
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self.type_name = name[16:]
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index = 2
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count_of_template = 1
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while index < len(self.type_name):
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if self.type_name[index] == '<':
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count_of_template = count_of_template + 1
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elif self.type_name[index] == '>':
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count_of_template = count_of_template - 1
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elif self.type_name[index] == ',' and count_of_template == 1:
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self.type_name = self.type_name[:index]
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break
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index = index + 1
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self.type_name_nospaces = self.type_name.replace(", ", ",")
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def update(self):
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try:
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impl = self.valobj.GetChildMemberWithName('_M_impl')
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node = impl.GetChildMemberWithName('_M_node')
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self.extract_type_name(impl.GetType().GetName())
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self.node_address = self.valobj.AddressOf().GetValueAsUnsigned(0)
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self.next = node.GetChildMemberWithName('_M_next')
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self.prev = node.GetChildMemberWithName('_M_prev')
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self.data_type = node.GetTarget().FindFirstType(self.type_name)
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# tries to fight against a difference in formatting type names between gcc and clang
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if self.data_type.IsValid() == False:
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self.data_type = node.GetTarget().FindFirstType(self.type_name_nospaces)
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self.data_size = self.data_type.GetByteSize()
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except:
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pass
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class StdVectorSynthProvider:
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def __init__(self, valobj, dict):
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self.valobj = valobj;
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self.update()
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def num_children(self):
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try:
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start_val = self.start.GetValueAsUnsigned(0)
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finish_val = self.finish.GetValueAsUnsigned(0)
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end_val = self.end.GetValueAsUnsigned(0)
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# Before a vector has been constructed, it will contain bad values
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# so we really need to be careful about the length we return since
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# unitialized data can cause us to return a huge number. We need
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# to also check for any of the start, finish or end of storage values
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# being zero (NULL). If any are, then this vector has not been
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# initialized yet and we should return zero
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# Make sure nothing is NULL
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if start_val == 0 or finish_val == 0 or end_val == 0:
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return 0
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# Make sure start is less than finish
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if start_val >= finish_val:
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return 0
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# Make sure finish is less than or equal to end of storage
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if finish_val > end_val:
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return 0
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num_children = (finish_val-start_val)/self.data_size
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return num_children
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except:
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return 0;
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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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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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try:
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offset = index * self.data_size
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return self.start.CreateChildAtOffset('['+str(index)+']',offset,self.data_type)
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except:
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return None
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def update(self):
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try:
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impl = self.valobj.GetChildMemberWithName('_M_impl')
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self.start = impl.GetChildMemberWithName('_M_start')
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self.finish = impl.GetChildMemberWithName('_M_finish')
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self.end = impl.GetChildMemberWithName('_M_end_of_storage')
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self.data_type = self.start.GetType().GetPointeeType()
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self.data_size = self.data_type.GetByteSize()
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except:
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pass
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class StdMapSynthProvider:
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def __init__(self, valobj, dict):
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self.valobj = valobj;
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self.update()
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def update(self):
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try:
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self.Mt = self.valobj.GetChildMemberWithName('_M_t')
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self.Mimpl = self.Mt.GetChildMemberWithName('_M_impl')
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self.Mheader = self.Mimpl.GetChildMemberWithName('_M_header')
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# from libstdc++ implementation of _M_root for rbtree
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self.Mroot = self.Mheader.GetChildMemberWithName('_M_parent')
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# the stuff into the tree is actually a std::pair<const key, value>
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# life would be much easier if gcc had a coherent way to print out
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# template names in debug info
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self.expand_clang_type_name()
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self.expand_gcc_type_name()
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self.data_type = self.Mt.GetTarget().FindFirstType(self.clang_type_name)
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if self.data_type.IsValid() == False:
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self.data_type = self.Mt.GetTarget().FindFirstType(self.gcc_type_name)
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self.data_size = self.data_type.GetByteSize()
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self.skip_size = self.Mheader.GetType().GetByteSize()
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except:
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pass
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def expand_clang_type_name(self):
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type_name = self.Mimpl.GetType().GetName()
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index = type_name.find("std::pair<")
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type_name = type_name[index+5:]
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index = 6
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template_count = 1
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while index < len(type_name):
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if type_name[index] == '<':
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template_count = template_count + 1
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elif type_name[index] == '>' and template_count == 1:
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type_name = type_name[:index+1]
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break
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elif type_name[index] == '>':
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template_count = template_count - 1
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index = index + 1;
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self.clang_type_name = type_name
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def expand_gcc_type_name(self):
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type_name = self.Mt.GetType().GetName()
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index = type_name.find("std::pair<")
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type_name = type_name[index+5:]
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index = 6
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template_count = 1
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while index < len(type_name):
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if type_name[index] == '<':
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template_count = template_count + 1
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elif type_name[index] == '>' and template_count == 1:
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type_name = type_name[:index+1]
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break
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elif type_name[index] == '>':
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template_count = template_count - 1
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elif type_name[index] == ' ' and template_count == 1 and type_name[index-1] == ',':
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type_name = type_name[0:index] + type_name[index+1:]
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index = index - 1
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index = index + 1;
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self.gcc_type_name = type_name
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def num_children(self):
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try:
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root_ptr_val = self.node_ptr_value(self.Mroot)
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if root_ptr_val == 0:
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return 0;
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return self.Mimpl.GetChildMemberWithName('_M_node_count').GetValueAsUnsigned(0)
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except:
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return 0;
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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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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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try:
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offset = index
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current = self.left(self.Mheader);
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while offset > 0:
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current = self.increment_node(current)
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offset = offset - 1;
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# skip all the base stuff and get at the data
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return current.CreateChildAtOffset('['+str(index)+']',self.skip_size,self.data_type)
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except:
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return None
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# utility functions
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def node_ptr_value(self,node):
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return node.GetValueAsUnsigned(0)
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def right(self,node):
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return node.GetChildMemberWithName("_M_right");
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def left(self,node):
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return node.GetChildMemberWithName("_M_left");
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def parent(self,node):
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return node.GetChildMemberWithName("_M_parent");
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# from libstdc++ implementation of iterator for rbtree
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def increment_node(self,node):
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if self.node_ptr_value(self.right(node)) != 0:
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x = self.right(node);
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while self.node_ptr_value(self.left(x)) != 0:
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x = self.left(x);
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return x;
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else:
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x = node;
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y = self.parent(x)
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while(self.node_ptr_value(x) == self.node_ptr_value(self.right(y))):
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x = y;
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y = self.parent(y);
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if self.node_ptr_value(self.right(x)) != self.node_ptr_value(y):
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x = y;
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return x;
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