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107 lines
3.7 KiB
Python
107 lines
3.7 KiB
Python
# This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
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# HACK: LLDB's python API doesn't afford anything helpful for getting at variadic template parameters.
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# We're forced to resort to parsing names as strings.
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def templateParams(s):
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depth = 0
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start = s.find('<') + 1
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result = []
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for i, c in enumerate(s[start:], start):
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if c == '<':
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depth += 1
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elif c == '>':
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if depth == 0:
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result.append(s[start: i].strip())
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break
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depth -= 1
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elif c == ',' and depth == 0:
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result.append(s[start: i].strip())
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start = i + 1
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return result
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def getType(target, typeName):
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stars = 0
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typeName = typeName.strip()
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while typeName.endswith('*'):
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stars += 1
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typeName = typeName[:-1]
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if typeName.startswith('const '):
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typeName = typeName[6:]
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ty = target.FindFirstType(typeName.strip())
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for _ in range(stars):
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ty = ty.GetPointerType()
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return ty
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def luau_variant_summary(valobj, internal_dict, options):
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type_id = valobj.GetChildMemberWithName("typeId").GetValueAsUnsigned()
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storage = valobj.GetChildMemberWithName("storage")
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params = templateParams(valobj.GetType().GetCanonicalType().GetName())
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stored_type = params[type_id]
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value = storage.Cast(stored_type.GetPointerType()).Dereference()
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return stored_type.GetDisplayTypeName() + " [" + value.GetValue() + "]"
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class LuauVariantSyntheticChildrenProvider:
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node_names = ["type", "value"]
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def __init__(self, valobj, internal_dict):
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self.valobj = valobj
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self.type_index = None
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self.current_type = None
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self.type_params = []
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self.stored_value = None
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def num_children(self):
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return len(self.node_names)
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def has_children(self):
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return True
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def get_child_index(self, name):
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try:
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return self.node_names.index(name)
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except ValueError:
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return -1
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def get_child_at_index(self, index):
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try:
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node = self.node_names[index]
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except IndexError:
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return None
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if node == "type":
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if self.current_type:
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return self.valobj.CreateValueFromExpression(node, f"(const char*)\"{self.current_type.GetDisplayTypeName()}\"")
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else:
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return self.valobj.CreateValueFromExpression(node, "(const char*)\"<unknown type>\"")
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elif node == "value":
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if self.stored_value is not None:
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if self.current_type is not None:
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return self.valobj.CreateValueFromData(node, self.stored_value.GetData(), self.current_type)
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else:
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return self.valobj.CreateValueExpression(node, "(const char*)\"<unknown type>\"")
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else:
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return self.valobj.CreateValueFromExpression(node, "(const char*)\"<no stored value>\"")
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else:
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return None
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def update(self):
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self.type_index = self.valobj.GetChildMemberWithName("typeId").GetValueAsSigned()
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self.type_params = templateParams(self.valobj.GetType().GetCanonicalType().GetName())
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if len(self.type_params) > self.type_index:
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self.current_type = getType(self.valobj.GetTarget(), self.type_params[self.type_index])
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if self.current_type:
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storage = self.valobj.GetChildMemberWithName("storage")
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self.stored_value = storage.Cast(self.current_type)
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else:
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self.stored_value = None
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else:
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self.current_type = None
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self.stored_value = None
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return False
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