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195 lines (172 loc) · 4.26 KB
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Copy pathScope.lua
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195 lines (172 loc) · 4.26 KB
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local Scope = {
new = function(self, parent)
local s = {
Parent = parent,
Locals = { },
Globals = { },
oldLocalNamesMap = { },
oldGlobalNamesMap = { },
Children = { },
}
if parent then
table.insert(parent.Children, s)
end
return setmetatable(s, { __index = self })
end,
AddLocal = function(self, v)
table.insert(self.Locals, v)
end,
AddGlobal = function(self, v)
table.insert(self.Globals, v)
end,
CreateLocal = function(self, name)
local v
v = self:GetLocal(name)
if v then return v end
v = { }
v.Scope = self
v.Name = name
v.IsGlobal = false
v.CanRename = true
v.References = 1
self:AddLocal(v)
return v
end,
GetLocal = function(self, name)
for k, var in pairs(self.Locals) do
if var.Name == name then return var end
end
if self.Parent then
return self.Parent:GetLocal(name)
end
end,
GetOldLocal = function(self, name)
if self.oldLocalNamesMap[name] then
return self.oldLocalNamesMap[name]
end
return self:GetLocal(name)
end,
mapLocal = function(self, name, var)
self.oldLocalNamesMap[name] = var
end,
GetOldGlobal = function(self, name)
if self.oldGlobalNamesMap[name] then
return self.oldGlobalNamesMap[name]
end
return self:GetGlobal(name)
end,
mapGlobal = function(self, name, var)
self.oldGlobalNamesMap[name] = var
end,
GetOldVariable = function(self, name)
return self:GetOldLocal(name) or self:GetOldGlobal(name)
end,
RenameLocal = function(self, oldName, newName)
oldName = type(oldName) == 'string' and oldName or oldName.Name
local found = false
local var = self:GetLocal(oldName)
if var then
var.Name = newName
self:mapLocal(oldName, var)
found = true
end
if not found and self.Parent then
self.Parent:RenameLocal(oldName, newName)
end
end,
RenameGlobal = function(self, oldName, newName)
oldName = type(oldName) == 'string' and oldName or oldName.Name
local found = false
local var = self:GetGlobal(oldName)
if var then
var.Name = newName
self:mapGlobal(oldName, var)
found = true
end
if not found and self.Parent then
self.Parent:RenameGlobal(oldName, newName)
end
end,
RenameVariable = function(self, oldName, newName)
oldName = type(oldName) == 'string' and oldName or oldName.Name
if self:GetLocal(oldName) then
self:RenameLocal(oldName, newName)
else
self:RenameGlobal(oldName, newName)
end
end,
GetAllVariables = function(self)
local ret = self:getVars(true) -- down
for k, v in pairs(self:getVars(false)) do -- up
table.insert(ret, v)
end
return ret
end,
getVars = function(self, top)
local ret = { }
if top then
for k, v in pairs(self.Children) do
for k2, v2 in pairs(v:getVars(true)) do
table.insert(ret, v2)
end
end
else
for k, v in pairs(self.Locals) do
table.insert(ret, v)
end
for k, v in pairs(self.Globals) do
table.insert(ret, v)
end
if self.Parent then
for k, v in pairs(self.Parent:getVars(false)) do
table.insert(ret, v)
end
end
end
return ret
end,
CreateGlobal = function(self, name)
local v
v = self:GetGlobal(name)
if v then return v end
v = { }
v.Scope = self
v.Name = name
v.IsGlobal = true
v.CanRename = true
v.References = 1
self:AddGlobal(v)
return v
end,
GetGlobal = function(self, name)
for k, v in pairs(self.Globals) do
if v.Name == name then return v end
end
if self.Parent then
return self.Parent:GetGlobal(name)
end
end,
GetVariable = function(self, name)
return self:GetLocal(name) or self:GetGlobal(name)
end,
ObfuscateLocals = function(self, recommendedMaxLength, validNameChars)
recommendedMaxLength = recommendedMaxLength or 7
local chars = validNameChars or "QWERTYUIOPASDFGHJKLZXCVBNMqwertyuioplkjhgfdsazxcvbnm_"
local chars2 = validNameChars or "QWERTYUIOPASDFGHJKLZXCVBNMqwertyuioplkjhgfdsazxcvbnm_1234567890"
for _, var in pairs(self.Locals) do
local id = ""
local tries = 0
repeat
local n = math.random(1, #chars)
id = id .. chars:sub(n, n)
for i = 1, math.random(0, tries > 5 and 30 or recommendedMaxLength) do
local n = math.random(1, #chars2)
id = id .. chars2:sub(n, n)
end
tries = tries + 1
until not self:GetVariable(id)
self:RenameLocal(var.Name, id)
end
end,
}
return Scope