27 lines
662 B
JavaScript
27 lines
662 B
JavaScript
var genfun = require('./')
|
|
|
|
var multiply = function(a, b) {
|
|
return a * b
|
|
}
|
|
|
|
var addAndMultiplyNumber = function(val) {
|
|
var fn = genfun()
|
|
('function(n) {')
|
|
('if (typeof n !== "number") {') // ending a line with { will indent the source
|
|
('throw new Error("argument should be a number")')
|
|
('}')
|
|
('var result = multiply(%d, n+%d)', val, val)
|
|
('return result')
|
|
('}')
|
|
|
|
// use fn.toString() if you want to see the generated source
|
|
|
|
return fn.toFunction({
|
|
multiply: multiply
|
|
})
|
|
}
|
|
|
|
var addAndMultiply2 = addAndMultiplyNumber(2)
|
|
|
|
console.log(addAndMultiply2.toString())
|
|
console.log('(3 + 2) * 2 =', addAndMultiply2(3)) |