2015-02-08 20:23:21 +11:00

54 lines
1.4 KiB
JavaScript

"use strict";
var util = require("../../util");
var t = require("../../types");
var visitor = {
enter: function (node, parent, scope, state) {
// check if this node is an identifier that matches the same as our function id
if (!t.isIdentifier(node, { name: state.id })) return;
// check if this node is the one referenced
if (!t.isReferenced(node, parent)) return;
// check that we don't have a local variable declared as that removes the need
// for the wrapper
var localDeclar = scope.getBinding(state.id);
if (localDeclar !== state.outerDeclar) return;
state.selfReference = true;
this.stop();
}
};
exports.property = function (node, file, scope) {
var key = t.toComputedKey(node, node.key);
if (!t.isLiteral(key)) return node; // we can't set a function id with this
var id = t.toIdentifier(key.value);
key = t.identifier(id);
var state = {
id: id,
selfReference: false,
outerDeclar: scope.getBinding(id),
};
scope.traverse(node, visitor, state);
var method = node.value;
if (state.selfReference) {
var templateName = "property-method-assignment-wrapper";
if (method.generator) templateName += "-generator";
node.value = util.template(templateName, {
FUNCTION: method,
FUNCTION_ID: key,
FUNCTION_KEY: scope.generateUidIdentifier(id),
WRAPPER_KEY: scope.generateUidIdentifier(id + "Wrapper")
});
} else {
method.id = key;
}
};