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Diffstat (limited to 'tools/node_modules/babel-eslint/node_modules/esrecurse/esrecurse.js')
-rw-r--r-- | tools/node_modules/babel-eslint/node_modules/esrecurse/esrecurse.js | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/tools/node_modules/babel-eslint/node_modules/esrecurse/esrecurse.js b/tools/node_modules/babel-eslint/node_modules/esrecurse/esrecurse.js new file mode 100644 index 0000000000..0805e67f39 --- /dev/null +++ b/tools/node_modules/babel-eslint/node_modules/esrecurse/esrecurse.js @@ -0,0 +1,135 @@ +/* + Copyright (C) 2014 Yusuke Suzuki <utatane.tea@gmail.com> + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY + DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ +(function () { + 'use strict'; + + var assign, + estraverse, + isArray, + objectKeys; + + assign = require('object-assign'); + estraverse = require('estraverse'); + + isArray = Array.isArray || function isArray(array) { + return Object.prototype.toString.call(array) === '[object Array]'; + }; + + objectKeys = Object.keys || function (o) { + var keys = [], key; + for (key in o) { + keys.push(key); + } + return keys; + }; + + function isNode(node) { + if (node == null) { + return false; + } + return typeof node === 'object' && typeof node.type === 'string'; + } + + function isProperty(nodeType, key) { + return (nodeType === estraverse.Syntax.ObjectExpression || nodeType === estraverse.Syntax.ObjectPattern) && key === 'properties'; + } + + function Visitor(visitor, options) { + options = options || {}; + + this.__visitor = visitor || this; + this.__childVisitorKeys = options.childVisitorKeys + ? assign({}, estraverse.VisitorKeys, options.childVisitorKeys) + : estraverse.VisitorKeys; + if (options.fallback === 'iteration') { + this.__fallback = objectKeys; + } else if (typeof options.fallback === 'function') { + this.__fallback = options.fallback; + } + } + + /* Default method for visiting children. + * When you need to call default visiting operation inside custom visiting + * operation, you can use it with `this.visitChildren(node)`. + */ + Visitor.prototype.visitChildren = function (node) { + var type, children, i, iz, j, jz, child; + + if (node == null) { + return; + } + + type = node.type || estraverse.Syntax.Property; + + children = this.__childVisitorKeys[type]; + if (!children) { + if (this.__fallback) { + children = this.__fallback(node); + } else { + throw new Error('Unknown node type ' + type + '.'); + } + } + + for (i = 0, iz = children.length; i < iz; ++i) { + child = node[children[i]]; + if (child) { + if (isArray(child)) { + for (j = 0, jz = child.length; j < jz; ++j) { + if (child[j]) { + if (isNode(child[j]) || isProperty(type, children[i])) { + this.visit(child[j]); + } + } + } + } else if (isNode(child)) { + this.visit(child); + } + } + } + }; + + /* Dispatching node. */ + Visitor.prototype.visit = function (node) { + var type; + + if (node == null) { + return; + } + + type = node.type || estraverse.Syntax.Property; + if (this.__visitor[type]) { + this.__visitor[type].call(this, node); + return; + } + this.visitChildren(node); + }; + + exports.version = require('./package.json').version; + exports.Visitor = Visitor; + exports.visit = function (node, visitor, options) { + var v = new Visitor(visitor, options); + v.visit(node); + }; +}()); +/* vim: set sw=4 ts=4 et tw=80 : */ |