@finnair/path-parser
Version:
Simple object path as array of strings and numbers
52 lines (51 loc) • 3.19 kB
JavaScript
// Generated automatically by nearley, version 2.20.1
// http://github.com/Hardmath123/nearley
// Bypasses TS6133. Allow declared but unused functions.
/* v8 ignore next */ // @ts-ignore
function id(d) { return d[0]; }
import * as matchers from '@finnair/path';
import moo from 'moo';
const lexer = moo.compile({
qString: /'(?:\\["bfnrt\/\\]|\\u[a-fA-F0-9]{4}|[^"\\])*?'/,
qqString: /"(?:\\["bfnrt\/\\]|\\u[a-fA-F0-9]{4}|[^"\\])*?"/,
integer: /[0-9]+/,
property: /[a-zA-Z_][a-zA-Z0-9_]*/,
comma: /, ?/,
lbracket: /\[ ?/,
rbracket: / ?]/,
'*': '*',
'$': '$',
'.': '.',
});
function handleQString(qString) {
return JSON.parse('"' + qString.substring(1, qString.length - 1) + '"');
}
;
;
;
;
const grammar = {
Lexer: lexer,
ParserRules: [
{ "name": "Path$ebnf$1", "symbols": [] },
{ "name": "Path$ebnf$1", "symbols": ["Path$ebnf$1", "PathExpression"], "postprocess": (d) => d[0].concat([d[1]]) },
{ "name": "Path", "symbols": [{ "literal": "$" }, "Path$ebnf$1"], "postprocess": d => d[1].reduce((result, matcher) => result.concat(matcher), []) },
{ "name": "PathExpression", "symbols": [{ "literal": "." }, "PropertyExpression"], "postprocess": d => d[1] },
{ "name": "PathExpression", "symbols": [{ type: "lbracket" }, "IndexExpression", { type: "rbracket" }], "postprocess": d => d[1] },
{ "name": "PathExpression", "symbols": [{ type: "lbracket" }, "UnionExpression", { type: "rbracket" }], "postprocess": d => new matchers.UnionMatcher(d[1]) },
{ "name": "PropertyExpression", "symbols": [{ "literal": "*" }], "postprocess": d => matchers.AnyProperty },
{ "name": "PropertyExpression", "symbols": [{ type: "property" }], "postprocess": d => new matchers.PropertyMatcher(d[0].value) },
{ "name": "IndexExpression", "symbols": [{ type: "integer" }], "postprocess": d => new matchers.IndexMatcher(parseInt(d[0].value)) },
{ "name": "IndexExpression", "symbols": [{ type: "qqString" }], "postprocess": d => new matchers.PropertyMatcher(JSON.parse(d[0].value)) },
{ "name": "IndexExpression", "symbols": [{ type: "qString" }], "postprocess": d => new matchers.PropertyMatcher(handleQString(d[0].value)) },
{ "name": "IndexExpression", "symbols": [{ "literal": "*" }], "postprocess": d => matchers.AnyIndex },
{ "name": "UnionExpression", "symbols": ["ComponentExpression", { type: "comma" }, "ComponentExpression"], "postprocess": d => [d[0], d[2]] },
{ "name": "UnionExpression", "symbols": ["ComponentExpression", { type: "comma" }, "UnionExpression"], "postprocess": d => [d[0], ...d[2]] },
{ "name": "ComponentExpression", "symbols": [{ type: "integer" }], "postprocess": d => parseInt(d[0].value) },
{ "name": "ComponentExpression", "symbols": [{ type: "property" }], "postprocess": d => d[0].value },
{ "name": "ComponentExpression", "symbols": [{ type: "qqString" }], "postprocess": d => JSON.parse(d[0].value) },
{ "name": "ComponentExpression", "symbols": [{ type: "qString" }], "postprocess": d => handleQString(d[0].value) }
],
ParserStart: "Path",
};
export default grammar;