RAHHH

backend/frontend/node_modules/tcomb/lib/enums.js

@@ -0,0 +1,59 @@
+var assert = require('./assert');
+var isTypeName = require('./isTypeName');
+var forbidNewOperator = require('./forbidNewOperator');
+var isNumber = require('./isNumber');
+var isString = require('./isString');
+var isObject = require('./isObject');
+
+function getDefaultName(map) {
+  return Object.keys(map).map(function (k) { return assert.stringify(k); }).join(' | ');
+}
+
+function enums(map, name) {
+
+  if (process.env.NODE_ENV !== 'production') {
+    assert(isObject(map), function () { return 'Invalid argument map ' + assert.stringify(map) + ' supplied to enums(map, [name]) combinator (expected a dictionary of String -> String | Number)'; });
+    assert(isTypeName(name), function () { return 'Invalid argument name ' + assert.stringify(name) + ' supplied to enums(map, [name]) combinator (expected a string)'; });
+  }
+
+  var displayName = name || getDefaultName(map);
+
+  function Enums(value, path) {
+
+    if (process.env.NODE_ENV !== 'production') {
+      forbidNewOperator(this, Enums);
+      path = path || [displayName];
+      assert(Enums.is(value), function () { return 'Invalid value ' + assert.stringify(value) + ' supplied to ' + path.join('/') + ' (expected one of ' + assert.stringify(Object.keys(map)) + ')'; });
+    }
+
+    return value;
+  }
+
+  Enums.meta = {
+    kind: 'enums',
+    map: map,
+    name: name,
+    identity: true
+  };
+
+  Enums.displayName = displayName;
+
+  Enums.is = function (x) {
+    return (isString(x) || isNumber(x)) && map.hasOwnProperty(x);
+  };
+
+  return Enums;
+}
+
+enums.of = function (keys, name) {
+  keys = isString(keys) ? keys.split(' ') : keys;
+  var value = {};
+  keys.forEach(function (k) {
+    value[k] = k;
+  });
+  return enums(value, name);
+};
+
+enums.getDefaultName = getDefaultName;
+module.exports = enums;
+