It appears that during its function cleanup of the TI-Nspire implementation, TI fortunately kept the standard Lua function
loadstring() that allows dynamic loading of Lua code snippets.
Here is a quick and dirty example of a command prompt to execute Lua on-liners:
function on.create()
editor = D2Editor.newRichText()
editor:move(0,150)
editor:resize(250,50)
end
function on.charIn(char)
editor:setText(editor:getText() .. char)
end
function on.enterKey()
local chunk, errc = loadstring(editor:getText())
if (not chunk) then
print(errc)
else
local status, err = pcall(chunk)
if (not status) then
print(err)
end
end
editor:setText("")
end
function on.backspaceKey()
editor:setText(editor:getText():sub(1, editor:getText():len() - 1))
end
Now imagine this combined with calls to
var.store() and
var.recall(), and you have a on-calc Lua code compiler
Unfortunately I have too many simultaneous projects to invest more on this, but I'm sure some of you will be able to build interesting tools from this.
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