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@nbenns
Last active January 12, 2016 18:02
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'use strict';
const R = require('ramda');
const rules = {"&": [
{">": [ "!products.blah", 2 ]},
{">": [ "!products.meow", 1 ]}
]};
const basket = { products: { meow: 2, blah: 3 } };
const Functions = {
"&": (o1, o2) => o1 && o2,
">": (o1, o2) => o1 > o2
};
let runDSL = (Func, Obj) => {
const operation = Object.keys(Func)[0];
const operands = Func[operation];
const args = operands.map((o) => {
const t = typeof o;
if (t == 'object') {
return runDSL(o, Obj);
}
else if (/^!/.exec(o)) {
const objLens = R.lensPath(o.slice(1).split('.'));
return R.view(objLens, Obj);
}
else return o;
});
console.log(operation, args);
return Functions[operation].apply(null, args);
};
const output = runDSL(rules, basket);
console.log(output);
/* Outputs:
* > [ 3, 2 ]
* > [ 2, 1 ]
* & [ true, true ]
* true
*/
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