antlr4ts
Version:
ANTLR 4 runtime for JavaScript written in Typescript
69 lines • 2.79 kB
JavaScript
;
/*!
* Copyright 2016 The ANTLR Project. All rights reserved.
* Licensed under the BSD-3-Clause license. See LICENSE file in the project root for license information.
*/
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
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;
return c > 3 && r && Object.defineProperty(target, key, r), r;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.ConflictInfo = void 0;
const Decorators_1 = require("../Decorators");
const Utils = require("../misc/Utils");
/**
* This class stores information about a configuration conflict.
*
* @author Sam Harwell
*/
class ConflictInfo {
constructor(conflictedAlts, exact) {
this._conflictedAlts = conflictedAlts;
this.exact = exact;
}
/**
* Gets the set of conflicting alternatives for the configuration set.
*/
get conflictedAlts() {
return this._conflictedAlts;
}
/**
* Gets whether or not the configuration conflict is an exact conflict.
* An exact conflict occurs when the prediction algorithm determines that
* the represented alternatives for a particular configuration set cannot be
* further reduced by consuming additional input. After reaching an exact
* conflict during an SLL prediction, only switch to full-context prediction
* could reduce the set of viable alternatives. In LL prediction, an exact
* conflict indicates a true ambiguity in the input.
*
* For the {@link PredictionMode#LL_EXACT_AMBIG_DETECTION} prediction mode,
* accept states are conflicting but not exact are treated as non-accept
* states.
*/
get isExact() {
return this.exact;
}
equals(obj) {
if (obj === this) {
return true;
}
else if (!(obj instanceof ConflictInfo)) {
return false;
}
return this.isExact === obj.isExact
&& Utils.equals(this.conflictedAlts, obj.conflictedAlts);
}
hashCode() {
return this.conflictedAlts.hashCode();
}
}
__decorate([
Decorators_1.Override
], ConflictInfo.prototype, "equals", null);
__decorate([
Decorators_1.Override
], ConflictInfo.prototype, "hashCode", null);
exports.ConflictInfo = ConflictInfo;
//# sourceMappingURL=ConflictInfo.js.map