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377 lines
13 KiB
377 lines
13 KiB
(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}(g.acorn || (g.acorn = {})).walk = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(_dereq_,module,exports){
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// AST walker module for Mozilla Parser API compatible trees
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// A simple walk is one where you simply specify callbacks to be
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// called on specific nodes. The last two arguments are optional. A
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// simple use would be
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//
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// walk.simple(myTree, {
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// Expression: function(node) { ... }
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// });
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//
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// to do something with all expressions. All Parser API node types
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// can be used to identify node types, as well as Expression,
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// Statement, and ScopeBody, which denote categories of nodes.
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//
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// The base argument can be used to pass a custom (recursive)
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// walker, and state can be used to give this walked an initial
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// state.
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"use strict";
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exports.__esModule = true;
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exports.simple = simple;
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exports.ancestor = ancestor;
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exports.recursive = recursive;
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exports.findNodeAt = findNodeAt;
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exports.findNodeAround = findNodeAround;
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exports.findNodeAfter = findNodeAfter;
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exports.findNodeBefore = findNodeBefore;
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exports.make = make;
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function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
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function simple(node, visitors, base, state, override) {
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if (!base) base = exports.base;(function c(node, st, override) {
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var type = override || node.type,
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found = visitors[type];
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base[type](node, st, c);
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if (found) found(node, st);
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})(node, state, override);
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}
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// An ancestor walk builds up an array of ancestor nodes (including
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// the current node) and passes them to the callback as the state parameter.
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function ancestor(node, visitors, base, state) {
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if (!base) base = exports.base;
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if (!state) state = [];(function c(node, st, override) {
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var type = override || node.type,
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found = visitors[type];
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if (node != st[st.length - 1]) {
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st = st.slice();
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st.push(node);
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}
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base[type](node, st, c);
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if (found) found(node, st);
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})(node, state);
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}
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// A recursive walk is one where your functions override the default
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// walkers. They can modify and replace the state parameter that's
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// threaded through the walk, and can opt how and whether to walk
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// their child nodes (by calling their third argument on these
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// nodes).
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function recursive(node, state, funcs, base, override) {
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var visitor = funcs ? exports.make(funcs, base) : base;(function c(node, st, override) {
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visitor[override || node.type](node, st, c);
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})(node, state, override);
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}
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function makeTest(test) {
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if (typeof test == "string") return function (type) {
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return type == test;
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};else if (!test) return function () {
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return true;
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};else return test;
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}
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var Found = function Found(node, state) {
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_classCallCheck(this, Found);
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this.node = node;this.state = state;
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}
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// Find a node with a given start, end, and type (all are optional,
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// null can be used as wildcard). Returns a {node, state} object, or
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// undefined when it doesn't find a matching node.
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;
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function findNodeAt(node, start, end, test, base, state) {
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test = makeTest(test);
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if (!base) base = exports.base;
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try {
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;(function c(node, st, override) {
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var type = override || node.type;
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if ((start == null || node.start <= start) && (end == null || node.end >= end)) base[type](node, st, c);
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if ((start == null || node.start == start) && (end == null || node.end == end) && test(type, node)) throw new Found(node, st);
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})(node, state);
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} catch (e) {
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if (e instanceof Found) return e;
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throw e;
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}
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}
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// Find the innermost node of a given type that contains the given
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// position. Interface similar to findNodeAt.
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function findNodeAround(node, pos, test, base, state) {
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test = makeTest(test);
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if (!base) base = exports.base;
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try {
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;(function c(node, st, override) {
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var type = override || node.type;
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if (node.start > pos || node.end < pos) return;
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base[type](node, st, c);
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if (test(type, node)) throw new Found(node, st);
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})(node, state);
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} catch (e) {
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if (e instanceof Found) return e;
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throw e;
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}
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}
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// Find the outermost matching node after a given position.
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function findNodeAfter(node, pos, test, base, state) {
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test = makeTest(test);
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if (!base) base = exports.base;
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try {
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;(function c(node, st, override) {
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if (node.end < pos) return;
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var type = override || node.type;
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if (node.start >= pos && test(type, node)) throw new Found(node, st);
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base[type](node, st, c);
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})(node, state);
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} catch (e) {
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if (e instanceof Found) return e;
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throw e;
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}
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}
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// Find the outermost matching node before a given position.
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function findNodeBefore(node, pos, test, base, state) {
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test = makeTest(test);
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if (!base) base = exports.base;
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var max = undefined;(function c(node, st, override) {
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if (node.start > pos) return;
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var type = override || node.type;
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if (node.end <= pos && (!max || max.node.end < node.end) && test(type, node)) max = new Found(node, st);
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base[type](node, st, c);
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})(node, state);
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return max;
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}
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// Used to create a custom walker. Will fill in all missing node
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// type properties with the defaults.
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function make(funcs, base) {
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if (!base) base = exports.base;
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var visitor = {};
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for (var type in base) visitor[type] = base[type];
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for (var type in funcs) visitor[type] = funcs[type];
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return visitor;
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}
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function skipThrough(node, st, c) {
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c(node, st);
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}
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function ignore(_node, _st, _c) {}
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// Node walkers.
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var base = {};
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exports.base = base;
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base.Program = base.BlockStatement = function (node, st, c) {
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for (var i = 0; i < node.body.length; ++i) {
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c(node.body[i], st, "Statement");
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}
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};
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base.Statement = skipThrough;
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base.EmptyStatement = ignore;
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base.ExpressionStatement = base.ParenthesizedExpression = function (node, st, c) {
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return c(node.expression, st, "Expression");
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};
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base.IfStatement = function (node, st, c) {
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c(node.test, st, "Expression");
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c(node.consequent, st, "Statement");
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if (node.alternate) c(node.alternate, st, "Statement");
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};
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base.LabeledStatement = function (node, st, c) {
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return c(node.body, st, "Statement");
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};
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base.BreakStatement = base.ContinueStatement = ignore;
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base.WithStatement = function (node, st, c) {
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c(node.object, st, "Expression");
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c(node.body, st, "Statement");
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};
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base.SwitchStatement = function (node, st, c) {
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c(node.discriminant, st, "Expression");
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for (var i = 0; i < node.cases.length; ++i) {
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var cs = node.cases[i];
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if (cs.test) c(cs.test, st, "Expression");
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for (var j = 0; j < cs.consequent.length; ++j) {
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c(cs.consequent[j], st, "Statement");
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}
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}
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};
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base.ReturnStatement = base.YieldExpression = function (node, st, c) {
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if (node.argument) c(node.argument, st, "Expression");
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};
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base.ThrowStatement = base.SpreadElement = function (node, st, c) {
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return c(node.argument, st, "Expression");
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};
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base.TryStatement = function (node, st, c) {
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c(node.block, st, "Statement");
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if (node.handler) {
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c(node.handler.param, st, "Pattern");
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c(node.handler.body, st, "ScopeBody");
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}
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if (node.finalizer) c(node.finalizer, st, "Statement");
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};
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base.WhileStatement = base.DoWhileStatement = function (node, st, c) {
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c(node.test, st, "Expression");
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c(node.body, st, "Statement");
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};
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base.ForStatement = function (node, st, c) {
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if (node.init) c(node.init, st, "ForInit");
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if (node.test) c(node.test, st, "Expression");
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if (node.update) c(node.update, st, "Expression");
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c(node.body, st, "Statement");
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};
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base.ForInStatement = base.ForOfStatement = function (node, st, c) {
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c(node.left, st, "ForInit");
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c(node.right, st, "Expression");
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c(node.body, st, "Statement");
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};
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base.ForInit = function (node, st, c) {
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if (node.type == "VariableDeclaration") c(node, st);else c(node, st, "Expression");
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};
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base.DebuggerStatement = ignore;
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base.FunctionDeclaration = function (node, st, c) {
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return c(node, st, "Function");
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};
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base.VariableDeclaration = function (node, st, c) {
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for (var i = 0; i < node.declarations.length; ++i) {
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c(node.declarations[i], st);
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}
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};
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base.VariableDeclarator = function (node, st, c) {
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c(node.id, st, "Pattern");
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if (node.init) c(node.init, st, "Expression");
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};
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base.Function = function (node, st, c) {
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if (node.id) c(node.id, st, "Pattern");
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for (var i = 0; i < node.params.length; i++) {
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c(node.params[i], st, "Pattern");
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}c(node.body, st, node.expression ? "ScopeExpression" : "ScopeBody");
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};
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// FIXME drop these node types in next major version
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// (They are awkward, and in ES6 every block can be a scope.)
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base.ScopeBody = function (node, st, c) {
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return c(node, st, "Statement");
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};
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base.ScopeExpression = function (node, st, c) {
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return c(node, st, "Expression");
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};
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base.Pattern = function (node, st, c) {
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if (node.type == "Identifier") c(node, st, "VariablePattern");else if (node.type == "MemberExpression") c(node, st, "MemberPattern");else c(node, st);
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};
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base.VariablePattern = ignore;
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base.MemberPattern = skipThrough;
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base.RestElement = function (node, st, c) {
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return c(node.argument, st, "Pattern");
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};
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base.ArrayPattern = function (node, st, c) {
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for (var i = 0; i < node.elements.length; ++i) {
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var elt = node.elements[i];
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if (elt) c(elt, st, "Pattern");
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}
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};
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base.ObjectPattern = function (node, st, c) {
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for (var i = 0; i < node.properties.length; ++i) {
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c(node.properties[i].value, st, "Pattern");
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}
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};
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base.Expression = skipThrough;
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base.ThisExpression = base.Super = base.MetaProperty = ignore;
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base.ArrayExpression = function (node, st, c) {
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for (var i = 0; i < node.elements.length; ++i) {
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var elt = node.elements[i];
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if (elt) c(elt, st, "Expression");
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}
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};
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base.ObjectExpression = function (node, st, c) {
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for (var i = 0; i < node.properties.length; ++i) {
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c(node.properties[i], st);
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}
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};
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base.FunctionExpression = base.ArrowFunctionExpression = base.FunctionDeclaration;
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base.SequenceExpression = base.TemplateLiteral = function (node, st, c) {
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for (var i = 0; i < node.expressions.length; ++i) {
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c(node.expressions[i], st, "Expression");
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}
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};
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base.UnaryExpression = base.UpdateExpression = function (node, st, c) {
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c(node.argument, st, "Expression");
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};
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base.BinaryExpression = base.LogicalExpression = function (node, st, c) {
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c(node.left, st, "Expression");
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c(node.right, st, "Expression");
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};
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base.AssignmentExpression = base.AssignmentPattern = function (node, st, c) {
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c(node.left, st, "Pattern");
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c(node.right, st, "Expression");
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};
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base.ConditionalExpression = function (node, st, c) {
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c(node.test, st, "Expression");
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c(node.consequent, st, "Expression");
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c(node.alternate, st, "Expression");
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};
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base.NewExpression = base.CallExpression = function (node, st, c) {
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c(node.callee, st, "Expression");
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if (node.arguments) for (var i = 0; i < node.arguments.length; ++i) {
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c(node.arguments[i], st, "Expression");
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}
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};
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base.MemberExpression = function (node, st, c) {
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c(node.object, st, "Expression");
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if (node.computed) c(node.property, st, "Expression");
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};
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base.ExportNamedDeclaration = base.ExportDefaultDeclaration = function (node, st, c) {
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if (node.declaration) c(node.declaration, st, node.type == "ExportNamedDeclaration" || node.declaration.id ? "Statement" : "Expression");
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if (node.source) c(node.source, st, "Expression");
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};
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base.ExportAllDeclaration = function (node, st, c) {
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c(node.source, st, "Expression");
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};
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base.ImportDeclaration = function (node, st, c) {
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for (var i = 0; i < node.specifiers.length; i++) {
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c(node.specifiers[i], st);
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}c(node.source, st, "Expression");
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};
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base.ImportSpecifier = base.ImportDefaultSpecifier = base.ImportNamespaceSpecifier = base.Identifier = base.Literal = ignore;
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base.TaggedTemplateExpression = function (node, st, c) {
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c(node.tag, st, "Expression");
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c(node.quasi, st);
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};
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base.ClassDeclaration = base.ClassExpression = function (node, st, c) {
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return c(node, st, "Class");
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};
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base.Class = function (node, st, c) {
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if (node.id) c(node.id, st, "Pattern");
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if (node.superClass) c(node.superClass, st, "Expression");
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for (var i = 0; i < node.body.body.length; i++) {
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c(node.body.body[i], st);
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}
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};
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base.MethodDefinition = base.Property = function (node, st, c) {
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if (node.computed) c(node.key, st, "Expression");
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c(node.value, st, "Expression");
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};
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base.ComprehensionExpression = function (node, st, c) {
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for (var i = 0; i < node.blocks.length; i++) {
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c(node.blocks[i].right, st, "Expression");
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}c(node.body, st, "Expression");
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};
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},{}]},{},[1])(1)
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}); |