105 lines
2.2 KiB
JavaScript
105 lines
2.2 KiB
JavaScript
var traverse = require("../traverse");
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var util = require("../util");
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var _ = require("lodash");
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var isLet = function (node) {
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if (node.type === "VariableDeclaration" && node.kind === "let") {
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node.kind = "var";
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node._ignoreBlockBindingHoist = true;
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return true;
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}
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};
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var hasLet = function (nodes) {
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var has = false;
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_.each(nodes, function (node) {
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if (isLet(node)) has = true;
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});
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return has;
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};
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exports.Program = function (node) {
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if (hasLet(node.body)) {
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node.body = buildNode(node.body);
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}
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};
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exports.BlockStatement = function (node, parent) {
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if (!hasLet(node.body)) return;
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// ignore if we're the body of a closure already
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if (parent.type === "FunctionExpression") return;
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node.body = buildNode(node.body);
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};
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exports.ForOfStatement =
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exports.ForInStatement = function (node) {
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if (isLet(node.left)) return buildNode(node);
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};
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exports.ForStatement = function (node) {
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if (isLet(node.init)) return buildNode(node);
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};
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var buildNode = function (node) {
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var nodes = [];
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// hoist normal variable declarations
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node = [].concat(node);
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node = node.map(function (node) {
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if (node._ignoreBlockBindingHoist) return node;
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if (node.type === "VariableDeclaration" && node.kind === "var") {
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_.each(node.declarations, function (declar) {
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nodes.push(util.template("variable-declare", {
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KEY: declar.id
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}));
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});
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return node.declarations.map(function (declar) {
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return util.template("assign", {
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KEY: declar.id,
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VALUE: declar.init
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}, true);
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});
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} else if (node.type === "ForInStatement" && !node.left._ignoreBlockBindingHoist) {
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var id = node.left.declarations[0].id;
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node.left = id;
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nodes.push(util.template("variable-declare", {
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KEY: id
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}));
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}
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return node;
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});
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//
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var func = {
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type: "FunctionExpression",
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params: [],
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defaults: [],
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body: {
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type: "BlockStatement",
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body: node
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}
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};
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var templateName = "function-call";
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if (traverse.hasType(node, "ThisExpression")) {
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templateName = "function-call-this";
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}
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//
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nodes.push(util.template(templateName, {
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FUNCTION: func
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}, true));
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return nodes;
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};
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