@scinorandex/sparse/dist/cli.js

Yet another parser generator

#! /usr/bin/env node
"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const promises_1 = __importDefault(require("fs/promises"));
const grammarParser_1 = require("./grammarParser");
const generator_1 = require("./generator");
const minimist_1 = __importDefault(require("minimist"));
const path_1 = __importDefault(require("path"));
const errorWindowBuilder_1 = require("./utils/errorWindowBuilder");
const args = (0, minimist_1.default)(process.argv.slice(2));
function checkFileExists(filepath) {
    return new Promise((resolve, reject) => {
        promises_1.default.access(filepath, promises_1.default.constants.F_OK)
            .then(() => resolve(true))
            .catch(() => resolve(false));
    });
}
async function main() {
    if (typeof args.input !== "string" || typeof args.output !== "string") {
        console.log("Usage: npx @scinorandex/sparse --input=<input> --output=<output>");
        return;
    }
    const inputFile = path_1.default.resolve(args.input);
    const outputFile = path_1.default.resolve(args.output);
    console.log(`Reading grammar from ${inputFile} and outputting table to ${outputFile}\n`);
    if (!(await checkFileExists(inputFile)))
        return console.log(`File ${inputFile} does not exist`);
    const grammar = await promises_1.default.readFile(args.input, "utf8");
    const productionsResult = (0, grammarParser_1.tryBuildProductions)(grammar);
    if (productionsResult.success === false) {
        console.log(productionsResult.reason);
        console.log((0, errorWindowBuilder_1.buildErrorWindow)(grammar, productionsResult.token));
        return;
    }
    const generatorResult = (0, generator_1.generateStates)(productionsResult.value);
    if (generatorResult.success === false) {
        console.log(generatorResult.reason);
        console.log((0, errorWindowBuilder_1.buildErrorWindow)(grammar, generatorResult.token));
        return;
    }
    await promises_1.default.writeFile(outputFile, generatorResult.value.toTable(), { encoding: "utf-8" });
}
main();
//# sourceMappingURL=cli.js.map