codegen function for Char checking

charcheck.jl

# Used to generate dotop1 and isopsuffix
function _genchartest(x::Vector{UInt32}, fname)
    n = length(x)
    out = []
    i = 1
    while i <= n 
        out1 = [x[i]]
        while i+1 <= n && x[i+1] == x[i] + 1
            push!(out1, x[i + 1])
            i += 1
        end
        push!(out, out1)
        i += 1
    end
    ex = :()
    first1 = true
    for cs in reverse(out)
        if length(cs) == 1
            ex1 = :(c == $(UInt32(cs[1])))
        else
            ex1 = :($(UInt32(cs[1])) <= c <= $(UInt32(cs[end])))
        end
        if first1
            ex = ex1
            first1 = false
        else
            ex = Expr(:||, ex1, ex)
        end
    end
    eval(current_module(), :(@inline function $fname(c::UInt32) $ex end))
    eval(current_module(), :(@inline $fname(c::Char) = $fname(UInt32(c))))
end