58 lines
1.2 KiB
JavaScript
58 lines
1.2 KiB
JavaScript
var Spec02 = require("../../specs/spec_0_2.js");
|
|
|
|
const spec02 = new Spec02();
|
|
|
|
function JSONParser(_spec) {
|
|
this.spec = (_spec) ? _spec : new Spec02();
|
|
}
|
|
|
|
/**
|
|
* Level 0 of validation: is that string? is that JSON?
|
|
*/
|
|
function validate_and_parse_as_json(payload) {
|
|
var json = payload;
|
|
|
|
if(payload) {
|
|
if( (typeof payload) == "string"){
|
|
try {
|
|
json = JSON.parse(payload);
|
|
|
|
}catch(e) {
|
|
throw {message: "invalid json payload", errors: e};
|
|
}
|
|
|
|
} else if( (typeof payload) != "object"){
|
|
// anything else
|
|
throw {message: "invalid payload type, allowed are: string or object"};
|
|
}
|
|
} else {
|
|
throw {message: "null or undefined payload"};
|
|
}
|
|
|
|
return json;
|
|
}
|
|
|
|
/*
|
|
* Level 1 of validation: is that follow a spec?
|
|
*/
|
|
function validate_spec(payload, spec) {
|
|
|
|
// is that follow the spec?
|
|
spec.check(payload);
|
|
|
|
return payload;
|
|
}
|
|
|
|
JSONParser.prototype.parse = function(payload) {
|
|
|
|
// Level 0 of validation: is that string? is that JSON?
|
|
var valid0 = validate_and_parse_as_json(payload);
|
|
|
|
// Level 1 of validation: is that follow a spec?
|
|
var valid1 = validate_spec(valid0, this.spec);
|
|
|
|
return valid1;
|
|
}
|
|
|
|
module.exports = JSONParser;
|