53 lines
1.3 KiB
JavaScript
53 lines
1.3 KiB
JavaScript
/* @noflow */
|
|
|
|
import explode from "babel-helper-explode-assignable-expression";
|
|
import * as t from "babel-types";
|
|
|
|
export default function (opts) {
|
|
let visitor = {};
|
|
|
|
function isAssignment(node) {
|
|
return node.operator === opts.operator + "=";
|
|
}
|
|
|
|
function buildAssignment(left, right) {
|
|
return t.assignmentExpression("=", left, right);
|
|
}
|
|
|
|
visitor.ExpressionStatement = function (path, file) {
|
|
// hit the `AssignmentExpression` one below
|
|
if (path.isCompletionRecord()) return;
|
|
|
|
let expr = path.node.expression;
|
|
if (!isAssignment(expr)) return;
|
|
|
|
let nodes = [];
|
|
let exploded = explode(expr.left, nodes, file, path.scope, true);
|
|
|
|
nodes.push(t.expressionStatement(
|
|
buildAssignment(exploded.ref, opts.build(exploded.uid, expr.right))
|
|
));
|
|
|
|
path.replaceWithMultiple(nodes);
|
|
};
|
|
|
|
visitor.AssignmentExpression = function (path, file) {
|
|
let { node, scope } = path;
|
|
if (!isAssignment(node)) return;
|
|
|
|
let nodes = [];
|
|
let exploded = explode(node.left, nodes, file, scope);
|
|
nodes.push(buildAssignment(exploded.ref, opts.build(exploded.uid, node.right)));
|
|
path.replaceWithMultiple(nodes);
|
|
};
|
|
|
|
visitor.BinaryExpression = function (path) {
|
|
let { node } = path;
|
|
if (node.operator === opts.operator) {
|
|
path.replaceWith(opts.build(node.left, node.right));
|
|
}
|
|
};
|
|
|
|
return visitor;
|
|
}
|