110 lines
2.5 KiB
JavaScript
110 lines
2.5 KiB
JavaScript
var t = require("../../types");
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var getSpreadLiteral = function (spread, file) {
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return file.toArray(spread.argument);
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};
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var hasSpread = function (nodes) {
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for (var i in nodes) {
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if (t.isSpreadElement(nodes[i])) {
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return true;
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}
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}
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return false;
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};
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var build = function (props, file) {
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var nodes = [];
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var _props = [];
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var push = function () {
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if (!_props.length) return;
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nodes.push(t.arrayExpression(_props));
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_props = [];
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};
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for (var i in props) {
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var prop = props[i];
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if (t.isSpreadElement(prop)) {
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push();
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nodes.push(getSpreadLiteral(prop, file));
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} else {
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_props.push(prop);
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}
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}
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push();
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return nodes;
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};
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exports.ArrayExpression = function (node, parent, file) {
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var elements = node.elements;
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if (!hasSpread(elements)) return;
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var nodes = build(elements, file);
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var first = nodes.shift();
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if (!t.isArrayExpression(first)) {
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nodes.unshift(first);
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first = t.arrayExpression([]);
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}
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return t.callExpression(t.memberExpression(first, t.identifier("concat")), nodes);
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};
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exports.CallExpression = function (node, parent, file, scope) {
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var args = node.arguments;
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if (!hasSpread(args)) return;
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var contextLiteral = t.literal(null);
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node.arguments = [];
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var nodes;
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if (args.length === 1 && args[0].argument.name === 'arguments') {
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nodes = [args[0].argument];
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} else {
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nodes = build(args, file);
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}
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var first = nodes.shift();
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if (nodes.length) {
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node.arguments.push(t.callExpression(t.memberExpression(first, t.identifier("concat")), nodes));
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} else {
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node.arguments.push(first);
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}
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var callee = node.callee;
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if (t.isMemberExpression(callee)) {
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var temp = scope.generateTempBasedOnNode(callee.object, file);
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if (temp) {
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callee.object = t.assignmentExpression("=", temp, callee.object);
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contextLiteral = temp;
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}
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t.appendToMemberExpression(callee, t.identifier("apply"));
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} else {
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node.callee = t.memberExpression(node.callee, t.identifier("apply"));
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}
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node.arguments.unshift(contextLiteral);
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};
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exports.NewExpression = function (node, parent, file) {
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var args = node.arguments;
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if (!hasSpread(args)) return;
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var nodes = build(args, file);
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var first = nodes.shift();
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if (nodes.length) {
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args = t.callExpression(t.memberExpression(first, t.identifier("concat")), nodes);
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} else {
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args = first;
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}
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return t.callExpression(file.addDeclaration("apply-constructor"), [node.callee, args]);
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};
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