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isArrayOf(array2test, type2match)
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var typeUtils = | |
literals = ['boolean', 'string', 'number', 'object'], | |
types2test = literals.concat([new RegExp(/asd/), new Number(1), new String('#')]), | |
testArrays = [ | |
[true, false, true], | |
[1, 2, 3], | |
['a', 'b', 'c'], | |
[/sdf/, /asdf/, /asf/], | |
[{}, {}, {}], | |
[new String('a'), new String('b'), new String('c')], | |
[new Number(1), new Number(2), new Number(3)] | |
], | |
results = []; | |
function testIsArrayOf (array, types) { | |
return { | |
'tested':array.toString(), | |
'results':types.map(function(type, idx) { | |
return isArrayOf(array, type)})} | |
} | |
function renderResults (results, types) { | |
var sep = ' | ', | |
maxL = results.reduce(function (prev, curr, idx, array) { | |
var len = curr.tested.toString().length | |
return ((prev > len) ? prev : len)}), | |
rows = [renderTHead(types)] | |
function pad (str, len) { | |
var ret = str, pad = len - str.length | |
for (i = pad - 1; i >= 0; i--) ret += ' ' | |
return ret | |
} | |
function renderTHead (cols) { | |
return [pad('title', maxL)].concat(cols).join(sep) | |
} | |
function renderResHead (tested) { | |
var pad = maxL - tested.length, | |
rowHead = tested, i | |
for (i = pad - 1; i >= 0; i--) rowHead += ' ' | |
return rowHead | |
} | |
function renderResult (el) { | |
var rowParts = [renderResHead(el.tested)], | |
rowRes = el.results.map(function ( el) { | |
return (el === 1 ? 'x':' ')}) | |
return rowParts.concat(rowRes).join(sep) | |
} | |
return rows.concat(results.map(renderResult)) | |
} | |
//run tests | |
results = testArrays.map(function (arr){ | |
return testIsArrayOf(arr, types2test)}) | |
console.log(renderResults(results, types2test)) | |
//module.exports = isArrayOf; |
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function extractConstructorName (o) { | |
var s = o.constructor.toString() | |
return s.substring(9, s.indexOf('(')) //'function '...'(' | |
} | |
function isArrayOf (array, type) { | |
var reduce, test | |
constructorMatch = extractConstructorName(type) | |
//compile testing functions | |
function testLiteral (o) { | |
return (typeof o == type)} | |
function testPrototype (o) { | |
return (extractConstructorName(o) == constructorMatch)} | |
//choose testing function and run test | |
test = (literals.indexOf(type) >= 0) ? testLiteral : testPrototype | |
return array.reduce(function (prev, curr, idx, array) { | |
return (prev & test(curr))}, true) | |
} | |
module.exports = typeUtils = { | |
isArrayOf = isArrayOf, | |
extractConstructorName = extractConstructorName | |
}; |
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