55 lines
2.1 KiB
Plaintext
55 lines
2.1 KiB
Plaintext
use "core/metaprogramming.nom"
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use "core/text.nom"
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use "core/operators.nom"
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use "core/collections.nom"
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use "core/control_flow.nom"
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compile [using %definitions %body, using %definitions do %body] to
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%setup_lua <-
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Lua ".."
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local fell_through = false
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local ok, ret = pcall(function()
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\(%definitions as lua statements)
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fell_through = true
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end)
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%body_lua <-
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Lua ".."
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local fell_through = false
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local ok, ret = pcall(function()
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\(%body as lua statements)
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fell_through = true
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end)
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remove free vars (declare locals in %setup_lua) from %body_lua
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%lua <-
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Lua ".."
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do
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local old_actions, old_compile_actions, old_arg_orders = ACTIONS, COMPILE_ACTIONS, ARG_ORDERS
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ACTIONS = setmetatable({}, {__index=old_actions})
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COMPILE_ACTIONS = setmetatable({}, {__index=old_compile_actions})
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ARG_ORDERS = setmetatable({}, {__index=old_arg_orders})
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\%setup_lua
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if not ok then
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ACTIONS, COMPILE_ACTIONS, ARG_ORDERS = old_actions, old_compile_actions, old_arg_orders
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error(ret, 0)
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end
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if not fell_through then
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ACTIONS, COMPILE_ACTIONS, ARG_ORDERS = old_actions, old_compile_actions, old_arg_orders
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return ret
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end
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getmetatable(ACTIONS).__newindex = old_actions
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getmetatable(COMPILE_ACTIONS).__newindex = old_compile_actions
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getmetatable(ARG_ORDERS).__newindex = old_arg_orders
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\%body_lua
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ACTIONS, COMPILE_ACTIONS, ARG_ORDERS = old_actions, old_compile_actions, old_arg_orders
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if not ok then
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error(ret, 0)
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end
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if not fell_through then
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return ret
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end
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end
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declare locals in %lua
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return %lua
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parse [using %] as: using % (do nothing)
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