/usr/lib/nodejs/ebnf-parser/ebnf-parser.js is in node-ebnf-parser 0.1.10+dfsg-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 | var bnf = require("./parser").parser,
ebnf = require("./ebnf-transform"),
jisonlex = require("lex-parser");
exports.parse = function parse (grammar) { return bnf.parse(grammar); };
exports.transform = ebnf.transform;
// adds a declaration to the grammar
bnf.yy.addDeclaration = function (grammar, decl) {
if (decl.start) {
grammar.start = decl.start;
} else if (decl.lex) {
grammar.lex = parseLex(decl.lex);
} else if (decl.operator) {
if (!grammar.operators) grammar.operators = [];
grammar.operators.push(decl.operator);
} else if (decl.parseParam) {
if (!grammar.parseParams) grammar.parseParams = [];
grammar.parseParams = grammar.parseParams.concat(decl.parseParam);
} else if (decl.include) {
if (!grammar.moduleInclude) grammar.moduleInclude = '';
grammar.moduleInclude += decl.include;
} else if (decl.options) {
if (!grammar.options) grammar.options = {};
for (var i=0; i < decl.options.length; i++) {
grammar.options[decl.options[i]] = true;
}
}
};
// parse an embedded lex section
var parseLex = function (text) {
return jisonlex.parse(text.replace(/(?:^%lex)|(?:\/lex$)/g, ''));
};
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