antlr4ts
Version:
ANTLR 4 runtime for JavaScript written in Typescript
119 lines • 4.64 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.VocabularyImpl = void 0;
// ConvertTo-TS run at 2016-10-04T11:26:59.5829654-07:00
const Decorators_1 = require("./Decorators");
const Token_1 = require("./Token");
/**
* This class provides a default implementation of the {@link Vocabulary}
* interface.
*
* @author Sam Harwell
*/
class VocabularyImpl {
/**
* Constructs a new instance of {@link VocabularyImpl} from the specified
* literal, symbolic, and display token names.
*
* @param literalNames The literal names assigned to tokens, or an empty array
* if no literal names are assigned.
* @param symbolicNames The symbolic names assigned to tokens, or
* an empty array if no symbolic names are assigned.
* @param displayNames The display names assigned to tokens, or an empty array
* to use the values in `literalNames` and `symbolicNames` as
* the source of display names, as described in
* {@link #getDisplayName(int)}.
*
* @see #getLiteralName(int)
* @see #getSymbolicName(int)
* @see #getDisplayName(int)
*/
constructor(literalNames, symbolicNames, displayNames) {
this.literalNames = literalNames;
this.symbolicNames = symbolicNames;
this.displayNames = displayNames;
// See note here on -1 part: https://github.com/antlr/antlr4/pull/1146
this._maxTokenType =
Math.max(this.displayNames.length, Math.max(this.literalNames.length, this.symbolicNames.length)) - 1;
}
get maxTokenType() {
return this._maxTokenType;
}
getLiteralName(tokenType) {
if (tokenType >= 0 && tokenType < this.literalNames.length) {
return this.literalNames[tokenType];
}
return undefined;
}
getSymbolicName(tokenType) {
if (tokenType >= 0 && tokenType < this.symbolicNames.length) {
return this.symbolicNames[tokenType];
}
if (tokenType === Token_1.Token.EOF) {
return "EOF";
}
return undefined;
}
getDisplayName(tokenType) {
if (tokenType >= 0 && tokenType < this.displayNames.length) {
let displayName = this.displayNames[tokenType];
if (displayName) {
return displayName;
}
}
let literalName = this.getLiteralName(tokenType);
if (literalName) {
return literalName;
}
let symbolicName = this.getSymbolicName(tokenType);
if (symbolicName) {
return symbolicName;
}
return String(tokenType);
}
}
/**
* Gets an empty {@link Vocabulary} instance.
*
* No literal or symbol names are assigned to token types, so
* {@link #getDisplayName(int)} returns the numeric value for all tokens
* except {@link Token#EOF}.
*/
VocabularyImpl.EMPTY_VOCABULARY = new VocabularyImpl([], [], []);
__decorate([
Decorators_1.NotNull
], VocabularyImpl.prototype, "literalNames", void 0);
__decorate([
Decorators_1.NotNull
], VocabularyImpl.prototype, "symbolicNames", void 0);
__decorate([
Decorators_1.NotNull
], VocabularyImpl.prototype, "displayNames", void 0);
__decorate([
Decorators_1.Override
], VocabularyImpl.prototype, "maxTokenType", null);
__decorate([
Decorators_1.Override
], VocabularyImpl.prototype, "getLiteralName", null);
__decorate([
Decorators_1.Override
], VocabularyImpl.prototype, "getSymbolicName", null);
__decorate([
Decorators_1.Override,
Decorators_1.NotNull
], VocabularyImpl.prototype, "getDisplayName", null);
__decorate([
Decorators_1.NotNull
], VocabularyImpl, "EMPTY_VOCABULARY", void 0);
exports.VocabularyImpl = VocabularyImpl;
//# sourceMappingURL=VocabularyImpl.js.map