diff options
Diffstat (limited to 'node_modules/escope/src/scope-manager.js')
| -rw-r--r-- | node_modules/escope/src/scope-manager.js | 245 |
1 files changed, 0 insertions, 245 deletions
diff --git a/node_modules/escope/src/scope-manager.js b/node_modules/escope/src/scope-manager.js deleted file mode 100644 index 024535d7c..000000000 --- a/node_modules/escope/src/scope-manager.js +++ /dev/null @@ -1,245 +0,0 @@ -/* - Copyright (C) 2015 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. -*/ - -import WeakMap from 'es6-weak-map'; -import Scope from './scope'; -import assert from 'assert'; - -import { - GlobalScope, - CatchScope, - WithScope, - ModuleScope, - ClassScope, - SwitchScope, - FunctionScope, - ForScope, - TDZScope, - FunctionExpressionNameScope, - BlockScope -} from './scope'; - -/** - * @class ScopeManager - */ -export default class ScopeManager { - constructor(options) { - this.scopes = []; - this.globalScope = null; - this.__nodeToScope = new WeakMap(); - this.__currentScope = null; - this.__options = options; - this.__declaredVariables = new WeakMap(); - } - - __useDirective() { - return this.__options.directive; - } - - __isOptimistic() { - return this.__options.optimistic; - } - - __ignoreEval() { - return this.__options.ignoreEval; - } - - __isNodejsScope() { - return this.__options.nodejsScope; - } - - isModule() { - return this.__options.sourceType === 'module'; - } - - isImpliedStrict() { - return this.__options.impliedStrict; - } - - isStrictModeSupported() { - return this.__options.ecmaVersion >= 5; - } - - // Returns appropriate scope for this node. - __get(node) { - return this.__nodeToScope.get(node); - } - - /** - * Get variables that are declared by the node. - * - * "are declared by the node" means the node is same as `Variable.defs[].node` or `Variable.defs[].parent`. - * If the node declares nothing, this method returns an empty array. - * CAUTION: This API is experimental. See https://github.com/estools/escope/pull/69 for more details. - * - * @param {Esprima.Node} node - a node to get. - * @returns {Variable[]} variables that declared by the node. - */ - getDeclaredVariables(node) { - return this.__declaredVariables.get(node) || []; - } - - /** - * acquire scope from node. - * @method ScopeManager#acquire - * @param {Esprima.Node} node - node for the acquired scope. - * @param {boolean=} inner - look up the most inner scope, default value is false. - * @return {Scope?} - */ - acquire(node, inner) { - var scopes, scope, i, iz; - - function predicate(scope) { - if (scope.type === 'function' && scope.functionExpressionScope) { - return false; - } - if (scope.type === 'TDZ') { - return false; - } - return true; - } - - scopes = this.__get(node); - if (!scopes || scopes.length === 0) { - return null; - } - - // Heuristic selection from all scopes. - // If you would like to get all scopes, please use ScopeManager#acquireAll. - if (scopes.length === 1) { - return scopes[0]; - } - - if (inner) { - for (i = scopes.length - 1; i >= 0; --i) { - scope = scopes[i]; - if (predicate(scope)) { - return scope; - } - } - } else { - for (i = 0, iz = scopes.length; i < iz; ++i) { - scope = scopes[i]; - if (predicate(scope)) { - return scope; - } - } - } - - return null; - } - - /** - * acquire all scopes from node. - * @method ScopeManager#acquireAll - * @param {Esprima.Node} node - node for the acquired scope. - * @return {Scope[]?} - */ - acquireAll(node) { - return this.__get(node); - } - - /** - * release the node. - * @method ScopeManager#release - * @param {Esprima.Node} node - releasing node. - * @param {boolean=} inner - look up the most inner scope, default value is false. - * @return {Scope?} upper scope for the node. - */ - release(node, inner) { - var scopes, scope; - scopes = this.__get(node); - if (scopes && scopes.length) { - scope = scopes[0].upper; - if (!scope) { - return null; - } - return this.acquire(scope.block, inner); - } - return null; - } - - attach() { } - - detach() { } - - __nestScope(scope) { - if (scope instanceof GlobalScope) { - assert(this.__currentScope === null); - this.globalScope = scope; - } - this.__currentScope = scope; - return scope; - } - - __nestGlobalScope(node) { - return this.__nestScope(new GlobalScope(this, node)); - } - - __nestBlockScope(node, isMethodDefinition) { - return this.__nestScope(new BlockScope(this, this.__currentScope, node)); - } - - __nestFunctionScope(node, isMethodDefinition) { - return this.__nestScope(new FunctionScope(this, this.__currentScope, node, isMethodDefinition)); - } - - __nestForScope(node) { - return this.__nestScope(new ForScope(this, this.__currentScope, node)); - } - - __nestCatchScope(node) { - return this.__nestScope(new CatchScope(this, this.__currentScope, node)); - } - - __nestWithScope(node) { - return this.__nestScope(new WithScope(this, this.__currentScope, node)); - } - - __nestClassScope(node) { - return this.__nestScope(new ClassScope(this, this.__currentScope, node)); - } - - __nestSwitchScope(node) { - return this.__nestScope(new SwitchScope(this, this.__currentScope, node)); - } - - __nestModuleScope(node) { - return this.__nestScope(new ModuleScope(this, this.__currentScope, node)); - } - - __nestTDZScope(node) { - return this.__nestScope(new TDZScope(this, this.__currentScope, node)); - } - - __nestFunctionExpressionNameScope(node) { - return this.__nestScope(new FunctionExpressionNameScope(this, this.__currentScope, node)); - } - - __isES6() { - return this.__options.ecmaVersion >= 6; - } -} - -/* vim: set sw=4 ts=4 et tw=80 : */ |