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expression
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0.1.0
A Excel like expression parser, compatible with FLOIP Expression language.
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lib/boolean_helpers.ex
defmodule Expression.BooleanHelpers do
@moduledoc false
import NimbleParsec
def boolean_true do
choice([string("t"), string("T")])
|> choice([string("r"), string("R")])
|> choice([string("u"), string("U")])
|> choice([string("e"), string("E")])
|> replace(true)
end
def boolean_false do
choice([string("f"), string("F")])
|> choice([string("a"), string("A")])
|> choice([string("l"), string("L")])
|> choice([string("s"), string("S")])
|> choice([string("e"), string("E")])
|> replace(false)
end
def boolean do
choice([
boolean_true(),
boolean_false()
])
end
end