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authorMinteck <contact@minteck.org>2022-10-18 08:59:09 +0200
committerMinteck <contact@minteck.org>2022-10-18 08:59:09 +0200
commit2c4ae43e688a9873e86211ea0e7aeb9ba770dd77 (patch)
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parent108525534c28013cfe1897c30e4565f9893f3766 (diff)
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+(function (global, factory) {
+ typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+ typeof define === 'function' && define.amd ? define(['exports'], factory) :
+ (global = global || self, factory((global.acorn = global.acorn || {}, global.acorn.walk = {})));
+}(this, (function (exports) { 'use strict';
+
+ // 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 and
+ // Statement, 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.
+
+ function simple(node, visitors, baseVisitor, state, override) {
+ if (!baseVisitor) { baseVisitor = base
+ ; }(function c(node, st, override) {
+ var type = override || node.type, found = visitors[type];
+ baseVisitor[type](node, st, c);
+ if (found) { found(node, st); }
+ })(node, state, override);
+ }
+
+ // An ancestor walk keeps an array of ancestor nodes (including the
+ // current node) and passes them to the callback as third parameter
+ // (and also as state parameter when no other state is present).
+ function ancestor(node, visitors, baseVisitor, state, override) {
+ var ancestors = [];
+ if (!baseVisitor) { baseVisitor = base
+ ; }(function c(node, st, override) {
+ var type = override || node.type, found = visitors[type];
+ var isNew = node !== ancestors[ancestors.length - 1];
+ if (isNew) { ancestors.push(node); }
+ baseVisitor[type](node, st, c);
+ if (found) { found(node, st || ancestors, ancestors); }
+ if (isNew) { ancestors.pop(); }
+ })(node, state, override);
+ }
+
+ // 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, baseVisitor, override) {
+ var visitor = funcs ? make(funcs, baseVisitor || undefined) : baseVisitor
+ ;(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) { this.node = node; this.state = state; };
+
+ // A full walk triggers the callback on each node
+ function full(node, callback, baseVisitor, state, override) {
+ if (!baseVisitor) { baseVisitor = base
+ ; }(function c(node, st, override) {
+ var type = override || node.type;
+ baseVisitor[type](node, st, c);
+ if (!override) { callback(node, st, type); }
+ })(node, state, override);
+ }
+
+ // An fullAncestor walk is like an ancestor walk, but triggers
+ // the callback on each node
+ function fullAncestor(node, callback, baseVisitor, state) {
+ if (!baseVisitor) { baseVisitor = base; }
+ var ancestors = []
+ ;(function c(node, st, override) {
+ var type = override || node.type;
+ var isNew = node !== ancestors[ancestors.length - 1];
+ if (isNew) { ancestors.push(node); }
+ baseVisitor[type](node, st, c);
+ if (!override) { callback(node, st || ancestors, ancestors, type); }
+ if (isNew) { ancestors.pop(); }
+ })(node, 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, baseVisitor, state) {
+ if (!baseVisitor) { baseVisitor = base; }
+ test = makeTest(test);
+ try {
+ (function c(node, st, override) {
+ var type = override || node.type;
+ if ((start == null || node.start <= start) &&
+ (end == null || node.end >= end))
+ { baseVisitor[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, baseVisitor, state) {
+ test = makeTest(test);
+ if (!baseVisitor) { baseVisitor = base; }
+ try {
+ (function c(node, st, override) {
+ var type = override || node.type;
+ if (node.start > pos || node.end < pos) { return }
+ baseVisitor[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, baseVisitor, state) {
+ test = makeTest(test);
+ if (!baseVisitor) { baseVisitor = 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) }
+ baseVisitor[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, baseVisitor, state) {
+ test = makeTest(test);
+ if (!baseVisitor) { baseVisitor = base; }
+ var max
+ ;(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); }
+ baseVisitor[type](node, st, c);
+ })(node, state);
+ return max
+ }
+
+ // Fallback to an Object.create polyfill for older environments.
+ var create = Object.create || function(proto) {
+ function Ctor() {}
+ Ctor.prototype = proto;
+ return new Ctor
+ };
+
+ // Used to create a custom walker. Will fill in all missing node
+ // type properties with the defaults.
+ function make(funcs, baseVisitor) {
+ var visitor = create(baseVisitor || base);
+ 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 = {};
+
+ base.Program = base.BlockStatement = function (node, st, c) {
+ for (var i = 0, list = node.body; i < list.length; i += 1)
+ {
+ var stmt = list[i];
+
+ c(stmt, st, "Statement");
+ }
+ };
+ base.Statement = skipThrough;
+ base.EmptyStatement = ignore;
+ base.ExpressionStatement = base.ParenthesizedExpression = base.ChainExpression =
+ 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$1 = 0, list$1 = node.cases; i$1 < list$1.length; i$1 += 1) {
+ var cs = list$1[i$1];
+
+ if (cs.test) { c(cs.test, st, "Expression"); }
+ for (var i = 0, list = cs.consequent; i < list.length; i += 1)
+ {
+ var cons = list[i];
+
+ c(cons, st, "Statement");
+ }
+ }
+ };
+ base.SwitchCase = function (node, st, c) {
+ if (node.test) { c(node.test, st, "Expression"); }
+ for (var i = 0, list = node.consequent; i < list.length; i += 1)
+ {
+ var cons = list[i];
+
+ c(cons, st, "Statement");
+ }
+ };
+ base.ReturnStatement = base.YieldExpression = base.AwaitExpression = 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, st); }
+ if (node.finalizer) { c(node.finalizer, st, "Statement"); }
+ };
+ base.CatchClause = function (node, st, c) {
+ if (node.param) { c(node.param, st, "Pattern"); }
+ c(node.body, 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, list = node.declarations; i < list.length; i += 1)
+ {
+ var decl = list[i];
+
+ c(decl, 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, list = node.params; i < list.length; i += 1)
+ {
+ var param = list[i];
+
+ c(param, st, "Pattern");
+ }
+ c(node.body, st, node.expression ? "Expression" : "Statement");
+ };
+
+ 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, list = node.elements; i < list.length; i += 1) {
+ var elt = list[i];
+
+ if (elt) { c(elt, st, "Pattern"); }
+ }
+ };
+ base.ObjectPattern = function (node, st, c) {
+ for (var i = 0, list = node.properties; i < list.length; i += 1) {
+ var prop = list[i];
+
+ if (prop.type === "Property") {
+ if (prop.computed) { c(prop.key, st, "Expression"); }
+ c(prop.value, st, "Pattern");
+ } else if (prop.type === "RestElement") {
+ c(prop.argument, st, "Pattern");
+ }
+ }
+ };
+
+ base.Expression = skipThrough;
+ base.ThisExpression = base.Super = base.MetaProperty = ignore;
+ base.ArrayExpression = function (node, st, c) {
+ for (var i = 0, list = node.elements; i < list.length; i += 1) {
+ var elt = list[i];
+
+ if (elt) { c(elt, st, "Expression"); }
+ }
+ };
+ base.ObjectExpression = function (node, st, c) {
+ for (var i = 0, list = node.properties; i < list.length; i += 1)
+ {
+ var prop = list[i];
+
+ c(prop, st);
+ }
+ };
+ base.FunctionExpression = base.ArrowFunctionExpression = base.FunctionDeclaration;
+ base.SequenceExpression = function (node, st, c) {
+ for (var i = 0, list = node.expressions; i < list.length; i += 1)
+ {
+ var expr = list[i];
+
+ c(expr, st, "Expression");
+ }
+ };
+ base.TemplateLiteral = function (node, st, c) {
+ for (var i = 0, list = node.quasis; i < list.length; i += 1)
+ {
+ var quasi = list[i];
+
+ c(quasi, st);
+ }
+
+ for (var i$1 = 0, list$1 = node.expressions; i$1 < list$1.length; i$1 += 1)
+ {
+ var expr = list$1[i$1];
+
+ c(expr, st, "Expression");
+ }
+ };
+ base.TemplateElement = ignore;
+ 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, list = node.arguments; i < list.length; i += 1)
+ {
+ var arg = list[i];
+
+ c(arg, 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) {
+ if (node.exported)
+ { c(node.exported, st); }
+ c(node.source, st, "Expression");
+ };
+ base.ImportDeclaration = function (node, st, c) {
+ for (var i = 0, list = node.specifiers; i < list.length; i += 1)
+ {
+ var spec = list[i];
+
+ c(spec, st);
+ }
+ c(node.source, st, "Expression");
+ };
+ base.ImportExpression = function (node, st, c) {
+ 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, "Expression");
+ };
+ 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"); }
+ c(node.body, st);
+ };
+ base.ClassBody = function (node, st, c) {
+ for (var i = 0, list = node.body; i < list.length; i += 1)
+ {
+ var elt = list[i];
+
+ c(elt, st);
+ }
+ };
+ base.MethodDefinition = base.Property = function (node, st, c) {
+ if (node.computed) { c(node.key, st, "Expression"); }
+ c(node.value, st, "Expression");
+ };
+
+ exports.ancestor = ancestor;
+ exports.base = base;
+ exports.findNodeAfter = findNodeAfter;
+ exports.findNodeAround = findNodeAround;
+ exports.findNodeAt = findNodeAt;
+ exports.findNodeBefore = findNodeBefore;
+ exports.full = full;
+ exports.fullAncestor = fullAncestor;
+ exports.make = make;
+ exports.recursive = recursive;
+ exports.simple = simple;
+
+ Object.defineProperty(exports, '__esModule', { value: true });
+
+})));