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Diffstat (limited to 'devtools/shared/acorn/walk.js')
| -rw-r--r-- | devtools/shared/acorn/walk.js | 377 |
1 files changed, 377 insertions, 0 deletions
diff --git a/devtools/shared/acorn/walk.js b/devtools/shared/acorn/walk.js new file mode 100644 index 000000000..9429e0b34 --- /dev/null +++ b/devtools/shared/acorn/walk.js @@ -0,0 +1,377 @@ +(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){ +// AST walker module for Mozilla Parser API compatible trees + +// A simple walk is one where you simply specify callbacks to be +// called on specific nodes. The last two arguments are optional. A +// simple use would be +// +// walk.simple(myTree, { +// Expression: function(node) { ... } +// }); +// +// to do something with all expressions. All Parser API node types +// can be used to identify node types, as well as Expression, +// Statement, and ScopeBody, which denote categories of nodes. +// +// The base argument can be used to pass a custom (recursive) +// walker, and state can be used to give this walked an initial +// state. + +"use strict"; + +exports.__esModule = true; +exports.simple = simple; +exports.ancestor = ancestor; +exports.recursive = recursive; +exports.findNodeAt = findNodeAt; +exports.findNodeAround = findNodeAround; +exports.findNodeAfter = findNodeAfter; +exports.findNodeBefore = findNodeBefore; +exports.make = make; + +function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } } + +function simple(node, visitors, base, state, override) { + if (!base) base = exports.base;(function c(node, st, override) { + var type = override || node.type, + found = visitors[type]; + base[type](node, st, c); + if (found) found(node, st); + })(node, state, override); +} + +// An ancestor walk builds up an array of ancestor nodes (including +// the current node) and passes them to the callback as the state parameter. + +function ancestor(node, visitors, base, state) { + if (!base) base = exports.base; + if (!state) state = [];(function c(node, st, override) { + var type = override || node.type, + found = visitors[type]; + if (node != st[st.length - 1]) { + st = st.slice(); + st.push(node); + } + base[type](node, st, c); + if (found) found(node, st); + })(node, state); +} + +// A recursive walk is one where your functions override the default +// walkers. They can modify and replace the state parameter that's +// threaded through the walk, and can opt how and whether to walk +// their child nodes (by calling their third argument on these +// nodes). + +function recursive(node, state, funcs, base, override) { + var visitor = funcs ? exports.make(funcs, base) : base;(function c(node, st, override) { + visitor[override || node.type](node, st, c); + })(node, state, override); +} + +function makeTest(test) { + if (typeof test == "string") return function (type) { + return type == test; + };else if (!test) return function () { + return true; + };else return test; +} + +var Found = function Found(node, state) { + _classCallCheck(this, Found); + + this.node = node;this.state = state; +} + +// Find a node with a given start, end, and type (all are optional, +// null can be used as wildcard). Returns a {node, state} object, or +// undefined when it doesn't find a matching node. +; + +function findNodeAt(node, start, end, test, base, state) { + test = makeTest(test); + if (!base) base = exports.base; + try { + ;(function c(node, st, override) { + var type = override || node.type; + if ((start == null || node.start <= start) && (end == null || node.end >= end)) base[type](node, st, c); + if ((start == null || node.start == start) && (end == null || node.end == end) && test(type, node)) throw new Found(node, st); + })(node, state); + } catch (e) { + if (e instanceof Found) return e; + throw e; + } +} + +// Find the innermost node of a given type that contains the given +// position. Interface similar to findNodeAt. + +function findNodeAround(node, pos, test, base, state) { + test = makeTest(test); + if (!base) base = exports.base; + try { + ;(function c(node, st, override) { + var type = override || node.type; + if (node.start > pos || node.end < pos) return; + base[type](node, st, c); + if (test(type, node)) throw new Found(node, st); + })(node, state); + } catch (e) { + if (e instanceof Found) return e; + throw e; + } +} + +// Find the outermost matching node after a given position. + +function findNodeAfter(node, pos, test, base, state) { + test = makeTest(test); + if (!base) base = exports.base; + try { + ;(function c(node, st, override) { + if (node.end < pos) return; + var type = override || node.type; + if (node.start >= pos && test(type, node)) throw new Found(node, st); + base[type](node, st, c); + })(node, state); + } catch (e) { + if (e instanceof Found) return e; + throw e; + } +} + +// Find the outermost matching node before a given position. + +function findNodeBefore(node, pos, test, base, state) { + test = makeTest(test); + if (!base) base = exports.base; + var max = undefined;(function c(node, st, override) { + if (node.start > pos) return; + var type = override || node.type; + if (node.end <= pos && (!max || max.node.end < node.end) && test(type, node)) max = new Found(node, st); + base[type](node, st, c); + })(node, state); + return max; +} + +// Used to create a custom walker. Will fill in all missing node +// type properties with the defaults. + +function make(funcs, base) { + if (!base) base = exports.base; + var visitor = {}; + for (var type in base) visitor[type] = base[type]; + for (var type in funcs) visitor[type] = funcs[type]; + return visitor; +} + +function skipThrough(node, st, c) { + c(node, st); +} +function ignore(_node, _st, _c) {} + +// Node walkers. + +var base = {}; + +exports.base = base; +base.Program = base.BlockStatement = function (node, st, c) { + for (var i = 0; i < node.body.length; ++i) { + c(node.body[i], st, "Statement"); + } +}; +base.Statement = skipThrough; +base.EmptyStatement = ignore; +base.ExpressionStatement = base.ParenthesizedExpression = function (node, st, c) { + return c(node.expression, st, "Expression"); +}; +base.IfStatement = function (node, st, c) { + c(node.test, st, "Expression"); + c(node.consequent, st, "Statement"); + if (node.alternate) c(node.alternate, st, "Statement"); +}; +base.LabeledStatement = function (node, st, c) { + return c(node.body, st, "Statement"); +}; +base.BreakStatement = base.ContinueStatement = ignore; +base.WithStatement = function (node, st, c) { + c(node.object, st, "Expression"); + c(node.body, st, "Statement"); +}; +base.SwitchStatement = function (node, st, c) { + c(node.discriminant, st, "Expression"); + for (var i = 0; i < node.cases.length; ++i) { + var cs = node.cases[i]; + if (cs.test) c(cs.test, st, "Expression"); + for (var j = 0; j < cs.consequent.length; ++j) { + c(cs.consequent[j], st, "Statement"); + } + } +}; +base.ReturnStatement = base.YieldExpression = function (node, st, c) { + if (node.argument) c(node.argument, st, "Expression"); +}; +base.ThrowStatement = base.SpreadElement = function (node, st, c) { + return c(node.argument, st, "Expression"); +}; +base.TryStatement = function (node, st, c) { + c(node.block, st, "Statement"); + if (node.handler) { + c(node.handler.param, st, "Pattern"); + c(node.handler.body, st, "ScopeBody"); + } + if (node.finalizer) c(node.finalizer, st, "Statement"); +}; +base.WhileStatement = base.DoWhileStatement = function (node, st, c) { + c(node.test, st, "Expression"); + c(node.body, st, "Statement"); +}; +base.ForStatement = function (node, st, c) { + if (node.init) c(node.init, st, "ForInit"); + if (node.test) c(node.test, st, "Expression"); + if (node.update) c(node.update, st, "Expression"); + c(node.body, st, "Statement"); +}; +base.ForInStatement = base.ForOfStatement = function (node, st, c) { + c(node.left, st, "ForInit"); + c(node.right, st, "Expression"); + c(node.body, st, "Statement"); +}; +base.ForInit = function (node, st, c) { + if (node.type == "VariableDeclaration") c(node, st);else c(node, st, "Expression"); +}; +base.DebuggerStatement = ignore; + +base.FunctionDeclaration = function (node, st, c) { + return c(node, st, "Function"); +}; +base.VariableDeclaration = function (node, st, c) { + for (var i = 0; i < node.declarations.length; ++i) { + c(node.declarations[i], st); + } +}; +base.VariableDeclarator = function (node, st, c) { + c(node.id, st, "Pattern"); + if (node.init) c(node.init, st, "Expression"); +}; + +base.Function = function (node, st, c) { + if (node.id) c(node.id, st, "Pattern"); + for (var i = 0; i < node.params.length; i++) { + c(node.params[i], st, "Pattern"); + }c(node.body, st, node.expression ? "ScopeExpression" : "ScopeBody"); +}; +// FIXME drop these node types in next major version +// (They are awkward, and in ES6 every block can be a scope.) +base.ScopeBody = function (node, st, c) { + return c(node, st, "Statement"); +}; +base.ScopeExpression = function (node, st, c) { + return c(node, st, "Expression"); +}; + +base.Pattern = function (node, st, c) { + if (node.type == "Identifier") c(node, st, "VariablePattern");else if (node.type == "MemberExpression") c(node, st, "MemberPattern");else c(node, st); +}; +base.VariablePattern = ignore; +base.MemberPattern = skipThrough; +base.RestElement = function (node, st, c) { + return c(node.argument, st, "Pattern"); +}; +base.ArrayPattern = function (node, st, c) { + for (var i = 0; i < node.elements.length; ++i) { + var elt = node.elements[i]; + if (elt) c(elt, st, "Pattern"); + } +}; +base.ObjectPattern = function (node, st, c) { + for (var i = 0; i < node.properties.length; ++i) { + c(node.properties[i].value, st, "Pattern"); + } +}; + +base.Expression = skipThrough; +base.ThisExpression = base.Super = base.MetaProperty = ignore; +base.ArrayExpression = function (node, st, c) { + for (var i = 0; i < node.elements.length; ++i) { + var elt = node.elements[i]; + if (elt) c(elt, st, "Expression"); + } +}; +base.ObjectExpression = function (node, st, c) { + for (var i = 0; i < node.properties.length; ++i) { + c(node.properties[i], st); + } +}; +base.FunctionExpression = base.ArrowFunctionExpression = base.FunctionDeclaration; +base.SequenceExpression = base.TemplateLiteral = function (node, st, c) { + for (var i = 0; i < node.expressions.length; ++i) { + c(node.expressions[i], st, "Expression"); + } +}; +base.UnaryExpression = base.UpdateExpression = function (node, st, c) { + c(node.argument, st, "Expression"); +}; +base.BinaryExpression = base.LogicalExpression = function (node, st, c) { + c(node.left, st, "Expression"); + c(node.right, st, "Expression"); +}; +base.AssignmentExpression = base.AssignmentPattern = function (node, st, c) { + c(node.left, st, "Pattern"); + c(node.right, st, "Expression"); +}; +base.ConditionalExpression = function (node, st, c) { + c(node.test, st, "Expression"); + c(node.consequent, st, "Expression"); + c(node.alternate, st, "Expression"); +}; +base.NewExpression = base.CallExpression = function (node, st, c) { + c(node.callee, st, "Expression"); + if (node.arguments) for (var i = 0; i < node.arguments.length; ++i) { + c(node.arguments[i], st, "Expression"); + } +}; +base.MemberExpression = function (node, st, c) { + c(node.object, st, "Expression"); + if (node.computed) c(node.property, st, "Expression"); +}; +base.ExportNamedDeclaration = base.ExportDefaultDeclaration = function (node, st, c) { + if (node.declaration) c(node.declaration, st, node.type == "ExportNamedDeclaration" || node.declaration.id ? "Statement" : "Expression"); + if (node.source) c(node.source, st, "Expression"); +}; +base.ExportAllDeclaration = function (node, st, c) { + c(node.source, st, "Expression"); +}; +base.ImportDeclaration = function (node, st, c) { + for (var i = 0; i < node.specifiers.length; i++) { + c(node.specifiers[i], st); + }c(node.source, st, "Expression"); +}; +base.ImportSpecifier = base.ImportDefaultSpecifier = base.ImportNamespaceSpecifier = base.Identifier = base.Literal = ignore; + +base.TaggedTemplateExpression = function (node, st, c) { + c(node.tag, st, "Expression"); + c(node.quasi, st); +}; +base.ClassDeclaration = base.ClassExpression = function (node, st, c) { + return c(node, st, "Class"); +}; +base.Class = function (node, st, c) { + if (node.id) c(node.id, st, "Pattern"); + if (node.superClass) c(node.superClass, st, "Expression"); + for (var i = 0; i < node.body.body.length; i++) { + c(node.body.body[i], st); + } +}; +base.MethodDefinition = base.Property = function (node, st, c) { + if (node.computed) c(node.key, st, "Expression"); + c(node.value, st, "Expression"); +}; +base.ComprehensionExpression = function (node, st, c) { + for (var i = 0; i < node.blocks.length; i++) { + c(node.blocks[i].right, st, "Expression"); + }c(node.body, st, "Expression"); +}; + +},{}]},{},[1])(1) +});
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