73 lines
2.7 KiB
JavaScript
73 lines
2.7 KiB
JavaScript
"use strict";
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/*!
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* Copyright 2016 The ANTLR Project. All rights reserved.
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* Licensed under the BSD-3-Clause license. See LICENSE file in the project root for license information.
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*/
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var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
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var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
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if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
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else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
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return c > 3 && r && Object.defineProperty(target, key, r), r;
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};
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var __param = (this && this.__param) || function (paramIndex, decorator) {
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return function (target, key) { decorator(target, key, paramIndex); }
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.Transition = void 0;
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const Decorators_1 = require("../Decorators");
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/** An ATN transition between any two ATN states. Subclasses define
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* atom, set, epsilon, action, predicate, rule transitions.
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*
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* This is a one way link. It emanates from a state (usually via a list of
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* transitions) and has a target state.
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*
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* Since we never have to change the ATN transitions once we construct it,
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* we can fix these transitions as specific classes. The DFA transitions
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* on the other hand need to update the labels as it adds transitions to
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* the states. We'll use the term Edge for the DFA to distinguish them from
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* ATN transitions.
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*/
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let Transition = class Transition {
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constructor(target) {
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if (target == null) {
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throw new Error("target cannot be null.");
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}
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this.target = target;
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}
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/**
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* Determines if the transition is an "epsilon" transition.
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*
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* The default implementation returns `false`.
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*
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* @returns `true` if traversing this transition in the ATN does not
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* consume an input symbol; otherwise, `false` if traversing this
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* transition consumes (matches) an input symbol.
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*/
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get isEpsilon() {
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return false;
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}
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get label() {
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return undefined;
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}
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};
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Transition.serializationNames = [
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"INVALID",
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"EPSILON",
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"RANGE",
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"RULE",
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"PREDICATE",
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"ATOM",
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"ACTION",
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"SET",
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"NOT_SET",
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"WILDCARD",
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"PRECEDENCE",
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];
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__decorate([
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Decorators_1.NotNull
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], Transition.prototype, "target", void 0);
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Transition = __decorate([
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__param(0, Decorators_1.NotNull)
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], Transition);
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exports.Transition = Transition;
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//# sourceMappingURL=Transition.js.map
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