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第37行：
第37行：
return ret
return ret
end
end
+
+local QueryBuilder = {content = ""}
+
+function QueryBuilder:new()
+ local n = {}
+ setmetatable(n, QueryBuilder)
+ self.__index = self
+ return n
+end
+function QueryBuilder:cat(v)
+ local n = self:new()
+ n.content = self.content .. v
+ return n
+end
+function QueryBuilder:bracket(t)
+ return self:cat('[['..t..']] ')
+end
+function QueryBuilder:or_()
+ return self:cat(' OR ')
+end
+function QueryBuilder:done()
+ return self.content
+end
+function QueryBuilder:page(name)
+ return self:bracket(name)
+end
+function QueryBuilder:category(name)
+ return self:bracket("Category:"..name)
+end
+function QueryBuilder:exists(prop)
+ return self:bracket(prop..'::+')
+end
+function QueryBuilder:property(prop, value)
+ return self:bracket(prop..'::'..value)
+end
+
+p.builder = QueryBuilder
return p
return p