lepu-test-platform-web/node_modules/babel-plugin-transform-es20.../lib/index.js

157 lines
4.2 KiB
JavaScript

"use strict";
exports.__esModule = true;
var _getIterator2 = require("babel-runtime/core-js/get-iterator");
var _getIterator3 = _interopRequireDefault(_getIterator2);
exports.default = function (_ref) {
var t = _ref.types;
function getSpreadLiteral(spread, scope, state) {
if (state.opts.loose && !t.isIdentifier(spread.argument, { name: "arguments" })) {
return spread.argument;
} else {
return scope.toArray(spread.argument, true);
}
}
function hasSpread(nodes) {
for (var i = 0; i < nodes.length; i++) {
if (t.isSpreadElement(nodes[i])) {
return true;
}
}
return false;
}
function build(props, scope, state) {
var nodes = [];
var _props = [];
function push() {
if (!_props.length) return;
nodes.push(t.arrayExpression(_props));
_props = [];
}
for (var _iterator = props, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : (0, _getIterator3.default)(_iterator);;) {
var _ref2;
if (_isArray) {
if (_i >= _iterator.length) break;
_ref2 = _iterator[_i++];
} else {
_i = _iterator.next();
if (_i.done) break;
_ref2 = _i.value;
}
var prop = _ref2;
if (t.isSpreadElement(prop)) {
push();
nodes.push(getSpreadLiteral(prop, scope, state));
} else {
_props.push(prop);
}
}
push();
return nodes;
}
return {
visitor: {
ArrayExpression: function ArrayExpression(path, state) {
var node = path.node,
scope = path.scope;
var elements = node.elements;
if (!hasSpread(elements)) return;
var nodes = build(elements, scope, state);
var first = nodes.shift();
if (!t.isArrayExpression(first)) {
nodes.unshift(first);
first = t.arrayExpression([]);
}
path.replaceWith(t.callExpression(t.memberExpression(first, t.identifier("concat")), nodes));
},
CallExpression: function CallExpression(path, state) {
var node = path.node,
scope = path.scope;
var args = node.arguments;
if (!hasSpread(args)) return;
var calleePath = path.get("callee");
if (calleePath.isSuper()) return;
var contextLiteral = t.identifier("undefined");
node.arguments = [];
var nodes = void 0;
if (args.length === 1 && args[0].argument.name === "arguments") {
nodes = [args[0].argument];
} else {
nodes = build(args, scope, state);
}
var first = nodes.shift();
if (nodes.length) {
node.arguments.push(t.callExpression(t.memberExpression(first, t.identifier("concat")), nodes));
} else {
node.arguments.push(first);
}
var callee = node.callee;
if (calleePath.isMemberExpression()) {
var temp = scope.maybeGenerateMemoised(callee.object);
if (temp) {
callee.object = t.assignmentExpression("=", temp, callee.object);
contextLiteral = temp;
} else {
contextLiteral = callee.object;
}
t.appendToMemberExpression(callee, t.identifier("apply"));
} else {
node.callee = t.memberExpression(node.callee, t.identifier("apply"));
}
if (t.isSuper(contextLiteral)) {
contextLiteral = t.thisExpression();
}
node.arguments.unshift(contextLiteral);
},
NewExpression: function NewExpression(path, state) {
var node = path.node,
scope = path.scope;
var args = node.arguments;
if (!hasSpread(args)) return;
var nodes = build(args, scope, state);
var context = t.arrayExpression([t.nullLiteral()]);
args = t.callExpression(t.memberExpression(context, t.identifier("concat")), nodes);
path.replaceWith(t.newExpression(t.callExpression(t.memberExpression(t.memberExpression(t.memberExpression(t.identifier("Function"), t.identifier("prototype")), t.identifier("bind")), t.identifier("apply")), [node.callee, args]), []));
}
}
};
};
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
module.exports = exports["default"];