babel/lib/babel/transformation/helpers/build-binary-assignment-operator-transformer.js
Sebastian McKenzie 1d34d03ac8 rename to babel
2015-02-15 18:09:05 +11:00

47 lines
1.3 KiB
JavaScript

"use strict";
var explode = require("./explode-assignable-expression");
var t = require("../../types");
module.exports = function (exports, opts) {
var isAssignment = function (node) {
return node.operator === opts.operator + "=";
};
var buildAssignment = function (left, right) {
return t.assignmentExpression("=", left, right);
};
exports.ExpressionStatement = function (node, parent, scope, file) {
// hit the `AssignmentExpression` one below
if (file.isConsequenceExpressionStatement(node)) return;
var expr = node.expression;
if (!isAssignment(expr)) return;
var nodes = [];
var exploded = explode(expr.left, nodes, file, scope, true);
nodes.push(t.expressionStatement(
buildAssignment(exploded.ref, opts.build(exploded.uid, expr.right))
));
return nodes;
};
exports.AssignmentExpression = function (node, parent, scope, file) {
if (!isAssignment(node)) return;
var nodes = [];
var exploded = explode(node.left, nodes, file, scope);
nodes.push(buildAssignment(exploded.ref, opts.build(exploded.uid, node.right)));
return t.toSequenceExpression(nodes, scope);
};
exports.BinaryExpression = function (node) {
if (node.operator !== opts.operator) return;
return opts.build(node.left, node.right);
};
};