univac/dist/src/impl/abnf.js

Generate AST of lots of common programming languages using antlr4. JavaScript API and CLI tool.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var parserImpl_1 = require("../parserImpl");
function getAbnfImpl() {
    return {
        Lexer: require('../grammar/abnf/AbnfLexer').AbnfLexer,
        Parser: require('../grammar/abnf/AbnfParser').AbnfParser,
        mainRule: 'rulelist',
        redundantTypes: function (node, parent) { return parserImpl_1.preventRedundantTypeNames(node, parent, function (node) { return ['repetition', 'element', 'option', 'alternation', 'concatenation', 'elements'].includes(node.type); }); },
        mutate: mutate
    };
}
exports.getAbnfImpl = getAbnfImpl;
function mutate(ast, impl) {
    function f(n, p) {
        if (n.start === undefined) {
            delete n.start;
        }
        if (n.stop === undefined) {
            delete n.stop;
        }
        if (n.type === 'rule_') {
            n.type = 'rule';
        }
        n.children.forEach(function (c) { return f(c, n); });
        return n;
    }
    return f(ast);
}
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