57 lines
2.0 KiB
Plaintext
57 lines
2.0 KiB
Plaintext
#!/usr/bin/env nomsu -V2.3.4.3
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#
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This file contains the implementation of an Object-Oriented programming system.
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use "core"
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compile [@, me] to (Lua value "self")
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compile [method %actions %body] to:
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%lua = (compile as (action %actions %body))
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add free vars ((% as lua id) for % in %actions) to %lua
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declare locals in %lua
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for % in %actions:
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to %lua write "\nclass.\(% as lua id) = \(% as lua id)"
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return (..)
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Lua "do -- Method: \(%actions.(1).stub)\n \%lua\nend"
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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parse [as %instance %body] as (..)
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result of:
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%old_self = (me)
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(me) = %instance
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try %body and if it barfs %msg:
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(me) = %old_self
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barf %msg
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..or if it succeeds: (me) = %old_self
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compile [object %classname extends %parent %class_body] to (..)
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Lua ".."
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do
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local class = {name=\(%classname as lua expr)}
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setmetatable(class, {
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__index=\(%parent as lua expr),
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__tostring=function(cls) return cls.name end,
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__call=function(cls, inst)
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inst = setmetatable(inst or {}, cls)
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if cls.A_initialize_1 then
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cls.A_initialize_1(inst)
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end
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return inst
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end,
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})
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_ENV["A"..string.as_lua_id("new "..class.name)] = class
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_ENV["A"..string.as_lua_id("new "..class.name.." 1")] = class
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_ENV["A"..string.as_lua_id("class "..class.name)] = function() return class end
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class.__index = class
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class.class = class
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\(%class_body as lua statements)
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class.__tostring = class["A"..string.as_lua_id("as text")]
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end
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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parse [object %classname %class_body] as (..)
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object %classname extends (nil) %class_body |