mirror of https://github.com/swig/swig
47 lines
1.2 KiB
Lua
47 lines
1.2 KiB
Lua
--Example using pointers to member functions
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require("import") -- the import fn
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import("member_pointer") -- import code
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mp = member_pointer
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-- catching undefined variables
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local env = _ENV -- Lua 5.2
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if not env then env = getfenv () end -- Lua 5.1
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setmetatable(env, {__index=function (t,i) error("undefined global variable `"..i.."'",2) end})
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function check(what, expected, actual)
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assert(expected == actual,"Failed: "..what.." Expected: "..expected.." Actual: "..actual)
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end
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-- Get the pointers
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area_pt = mp.areapt()
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perim_pt = mp.perimeterpt()
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-- Create some objects
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s = mp.Square(10)
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-- Do some calculations
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check ("Square area ", 100.0, mp.do_op(s,area_pt))
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check ("Square perim", 40.0, mp.do_op(s,perim_pt))
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-- Try the variables
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-- these have to still be part of the 'member_pointer' table
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memberPtr = mp.areavar
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memberPtr = mp.perimetervar
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check ("Square area ", 100.0, mp.do_op(s,mp.areavar))
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check ("Square perim", 40.0, mp.do_op(s,mp.perimetervar))
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-- Modify one of the variables
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mp.areavar = perim_pt
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check ("Square perimeter", 40.0, mp.do_op(s,mp.areavar))
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-- Try the constants
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memberPtr = mp.AREAPT
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memberPtr = mp.PERIMPT
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memberPtr = mp.NULLPT
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check ("Square area ", 100.0, mp.do_op(s,mp.AREAPT))
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check ("Square perim", 40.0, mp.do_op(s,mp.PERIMPT))
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