babel/lib/6to5/transformation/transformers/es7-abstract-references.js

61 lines
1.5 KiB
JavaScript

// https://github.com/zenparsing/es-abstract-refs
var util = require("../../util");
var t = require("../../types");
var container = function (parent, call, ret) {
if (t.isExpressionStatement(parent)) {
// we don't need to worry about return values
return call;
} else {
return t.sequenceExpression([call, ret]);
}
};
exports.AssignmentExpression = function (node, parent) {
var left = node.left;
if (!t.isVirtualPropertyExpression(left)) return;
var right = node.right;
var call = util.template("abstract-expression-set", {
PROPERTY: left.property,
OBJECT: left.object,
VALUE: right
});
return container(parent, call, right);
};
exports.UnaryExpression = function (node, parent) {
var arg = node.argument;
if (!t.isVirtualPropertyExpression(arg)) return;
if (node.operator !== "delete") return;
var call = util.template("abstract-expression-delete", {
PROPERTY: arg.property,
OBJECT: arg.object
});
return container(parent, call, t.literal(true));
};
exports.CallExpression = function (node, parent) {
var callee = node.callee;
if (!t.isVirtualPropertyExpression(callee)) return;
var call = util.template("abstract-expression-call", {
PROPERTY: callee.property,
OBJECT: callee.object
});
call.arguments = call.arguments.concat(node.arguments);
return call;
};
exports.VirtualPropertyExpression = function (node) {
return util.template("abstract-expression-get", {
PROPERTY: node.property,
OBJECT: node.object
});
};