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local argcheck = require 'argcheck'
function addfive(x)
return string.format('%f + 5 = %f', x, x+5)
end
check = argcheck{
{name="x", type="number"}
}
function addfive(...)
local x = check(...)
return string.format('%f + 5 = %f', x, x+5)
end
assert(addfive(5) == '5.000000 + 5 = 10.000000')
assert(not pcall(addfive))
check = argcheck{
{name="x", type="number", default=0}
}
assert(addfive() == '0.000000 + 5 = 5.000000')
check = argcheck{
help=[[
This function is going to do a simple addition.
Give a number, it adds 5. Amazing.
]],
{name="x", type="number", default=0, help="the age of the captain"},
{name="msg", type="string", help="a message"}
}
function addfive(...)
local x, msg = check(...)
return string.format('%f + 5 = %f [msg=%s]', x, x+5, msg)
end
assert(addfive(4, 'hello world') == '4.000000 + 5 = 9.000000 [msg=hello world]')
assert(addfive('hello world') == '0.000000 + 5 = 5.000000 [msg=hello world]')
check = argcheck{
{name="x", type="number"},
{name="y", type="number", defaulta="x"}
}
function mul(...)
local x, y = check(...)
return string.format('%f x %f = %f', x, y, x*y)
end
assert(mul(3,4) == '3.000000 x 4.000000 = 12.000000')
assert(mul(3) == '3.000000 x 3.000000 = 9.000000')
idx = 0
check = argcheck{
{name="x", type="number"},
{name="y", type="number", defaultf=function() idx = idx + 1 return idx end}
}
function mul(...)
local x, y = check(...)
return string.format('%f x %f = %f', x, y, x*y)
end
assert(mul(3) == '3.000000 x 1.000000 = 3.000000')
assert(mul(3) == '3.000000 x 2.000000 = 6.000000')
assert(mul(3) == '3.000000 x 3.000000 = 9.000000')
check = argcheck{
{name="x", type="number", default=0, help="the age of the captain"},
{name="msg", type="string", help="a message", opt=true}
}
function addfive(...)
local x, msg = check(...)
return string.format('%f + 5 = %f [msg=%s]', x, x+5, msg)
end
assert(addfive('hello world') == '0.000000 + 5 = 5.000000 [msg=hello world]')
assert(addfive() == '0.000000 + 5 = 5.000000 [msg=nil]')
check = argcheck{
{name="x", type="number", help="a number between one and ten",
check=function(x)
return x >= 1 and x <= 10
end}
}
function addfive(...)
local x = check(...)
return string.format('%f + 5 = %f', x, x+5)
end
assert(addfive(3) == '3.000000 + 5 = 8.000000')
assert( not pcall(addfive, 11))
check = argcheck{
{name="x", type="number", default=0, help="the age of the captain"},
{name="msg", type="string", help="a message", opt=true}
}
function addfive(...)
local x, msg = check(...)
return string.format('%f + 5 = %f [msg=%s]', x, x+5, msg)
end
assert(addfive(1, "hello world") == '1.000000 + 5 = 6.000000 [msg=hello world]')
assert(addfive{x=1, msg="hello world"} == '1.000000 + 5 = 6.000000 [msg=hello world]')
check = argcheck{
pack=true,
{name="x", type="number", default=0, help="the age of the captain"},
{name="msg", type="string", help="a message"}
}
function addfive(...)
local args = check(...) -- now arguments are stored in this table
return(string.format('%f + 5 = %f [msg=%s]', args.x, args.x+5, args.msg))
end
assert(addfive(5, 'hello world') == '5.000000 + 5 = 10.000000 [msg=hello world]')
check = argcheck{
nonamed=true,
{name="x", type="number", default=0, help="the age of the captain"},
{name="msg", type="string", help="a message"}
}
function addfive(...)
local x, msg = check(...)
return string.format('%f + 5 = %f [msg=%s]', x, x+5, msg)
end
assert(addfive('blah') == '0.000000 + 5 = 5.000000 [msg=blah]')
assert(not pcall(addfive, {msg='blah'}))
check = argcheck{
quiet=true,
{name="x", type="number", default=0, help="the age of the captain"},
{name="msg", type="string", help="a message"}
}
assert(check(5, 'hello world'))
assert(not check(5))
addfive = argcheck{
{name="x", type="number"},
call =
function(x)
return string.format('%f + 5 = %f', x, x+5)
end
}
assert(addfive(5) == '5.000000 + 5 = 10.000000')
assert(not pcall(addfive))
checknum = argcheck{
quiet=true,
{name="x", type="number"}
}
checkstr = argcheck{
quiet=true,
{name="str", type="string"}
}
function addfive(...)
-- first case
local status, x = checknum(...)
if status then
return string.format('%f + 5 = %f', x, x+5)
end
-- second case
local status, str = checkstr(...)
if status then
return string.format('%s .. 5 = %s', str, str .. '5')
end
-- note that in case of failure with quiet, the error is returned after the status
error('invalid arguments')
end
assert(addfive(123) == '123.000000 + 5 = 128.000000')
assert(addfive('hi') == 'hi .. 5 = hi5')
addfive = argcheck{
{name="x", type="number"},
call =
function(x) -- called in case of success
return string.format('%f + 5 = %f', x, x+5)
end
}
addfive = argcheck{
{name="str", type="string"},
overload = addfive, -- overload previous one
call =
function(str) -- called in case of success
return string.format('%s .. 5 = %s', str, str .. '5')
end
}
assert(addfive(5) == '5.000000 + 5 = 10.000000')
assert(addfive('hi') == 'hi .. 5 = hi5')
addfive = argcheck{
{name="x", type="number"},
call =
function(x) -- called in case of success
return string.format('%f + 7 = %f', x, x+7)
end
}
assert(not pcall(argcheck,
{
{name="x", type="number"},
{name="msg", type="string", default="i know what i am doing"},
overload = addfive,
call =
function(x, msg) -- called in case of success
return string.format('%f + 5 = %f [msg = %s]', x, x+5, msg)
end
})
)
addfive = argcheck{
{name="x", type="number"},
{name="msg", type="string", default="i know what i am doing"},
overload = addfive,
force = true,
call =
function(x, msg) -- called in case of success
return string.format('%f + 5 = %f [msg = %s]', x, x+5, msg)
end
}
assert(addfive(5, 'hello') == '5.000000 + 5 = 10.000000 [msg = hello]')
assert(addfive(5) == '5.000000 + 5 = 10.000000 [msg = i know what i am doing]')
print('PASSED')
|
