Created
November 30, 2015 17:00
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validate an object by the presence of it's properties
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function validateObjStructure(obj, structure) { | |
if (structure.length > 0) | |
while (structure[0] == '.') | |
structure = structure.substr(1) | |
console.log('Call:', JSON.stringify(obj), structure) | |
var dot = structure.indexOf('.') | |
var bracket = structure.indexOf('[') | |
var prop; | |
if (dot === -1 && bracket === -1) { // a | |
console.log('A-') | |
return obj.hasOwnProperty(structure); | |
} else { // a.b[ or a[].b | |
console.log('B-') | |
if (dot === -1) dot = structure.length + 1 | |
if (bracket === -1) bracket = structure.length + 1 | |
var smallest = dot < bracket ? dot : bracket; | |
if (smallest == dot) { // a. | |
prop = structure.substr(0, dot); | |
console.log('B-A prop:', prop) | |
return validateObjStructure(obj[prop], structure.substr(dot+1)); | |
} else { | |
var endBracket = structure.indexOf(']') | |
if (bracket === 0) { // [ | |
prop = structure.substr(bracket+1, endBracket-bracket-1) | |
console.log('p1', prop, prop.length) | |
if (prop.length === 0) | |
prop = 0; | |
console.log('B-B prop:', prop, obj) // [ | |
return validateObjStructure(obj[prop], structure.substr(endBracket+2)); | |
} else { // a[ | |
prop = structure.substr(0, bracket) | |
console.log('B-C prop:', prop, obj) // a[ | |
return validateObjStructure(obj[prop], structure.substr(bracket)); | |
} | |
} | |
} | |
} | |
//var positiveTestCases = { | |
// 'a': {a:1}, | |
// 'a.b': {a: {b:1} }, | |
// 'b[].c': {a:1, b:[{c:1}]}, | |
// 'b[1].c': {a:1, b:[{d:1},{c:1}]} | |
//}; | |
//for (var testCase in positiveTestCases) { | |
// console.log(testCase, validateObjStructure(positiveTestCases[testCase], testCase) === true); | |
//} |
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