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#!/usr/bin/env node
"use strict";
/* eslint-env node */
let Runner = require("./runner.js");
let benchmarks = require("./benchmarks.js");
let fs = require("fs");
// Results Table Manipulation
function dup(text, count) {
let result = "";
for (let i = 1; i <= count; i++) {
result += text;
}
return result;
}
function padLeft(text, length) {
return dup(" ", length - text.length) + text;
}
function padRight(text, length) {
return text + dup(" ", length - text.length);
}
function center(text, length) {
let padLength = (length - text.length) / 2;
return dup(" ", Math.floor(padLength))
+ text
+ dup(" ", Math.ceil(padLength));
}
function writeTableHeader() {
console.log("┌─────────────────────────────────────┬───────────┬────────────┬──────────────┐");
console.log("│ Test │ Inp. size │ Avg. time │ Avg. speed │");
}
function writeHeading(heading) {
console.log("├─────────────────────────────────────┴───────────┴────────────┴──────────────┤");
console.log("│ " + center(heading, 75) + " │");
console.log("├─────────────────────────────────────┬───────────┬────────────┬──────────────┤");
}
function writeResult(title, inputSize, parseTime) {
const KB = 1024;
const MS_IN_S = 1000;
console.log("│ "
+ padRight(title, 35)
+ " │ "
+ padLeft((inputSize / KB).toFixed(2), 6)
+ " kB │ "
+ padLeft(parseTime.toFixed(2), 7)
+ " ms │ "
+ padLeft(((inputSize / KB) / (parseTime / MS_IN_S)).toFixed(2), 7)
+ " kB/s │"
);
}
function writeSeparator() {
console.log("├─────────────────────────────────────┼───────────┼────────────┼──────────────┤");
}
function writeTableFooter() {
console.log("└─────────────────────────────────────┴───────────┴────────────┴──────────────┘");
}
// Helpers
function printHelp() {
console.log("Usage: run [options]");
console.log("");
console.log("Runs PEG.js benchmark suite.");
console.log("");
console.log("Options:");
console.log(" -n, --run-count <n> number of runs (default: 10)");
console.log(" --cache make tested parsers cache results");
console.log(" -o, --optimize <goal> select optimization for speed or size (default:");
console.log(" speed)");
}
function exitSuccess() {
process.exit(0);
}
function exitFailure() {
process.exit(1);
}
function abort(message) {
console.error(message);
exitFailure();
}
// Arguments
let args = process.argv.slice(2); // Trim "node" and the script path.
function isOption(arg) {
return (/^-/).test(arg);
}
function nextArg() {
args.shift();
}
// Main
let runCount = 10;
let options = {
cache: false,
optimize: "speed"
};
while (args.length > 0 && isOption(args[0])) {
switch (args[0]) {
case "-n":
case "--run-count":
nextArg();
if (args.length === 0) {
abort("Missing parameter of the -n/--run-count option.");
}
runCount = parseInt(args[0], 10);
if (isNaN(runCount) || runCount <= 0) {
abort("Number of runs must be a positive integer.");
}
break;
case "--cache":
options.cache = true;
break;
case "-o":
case "--optimize":
nextArg();
if (args.length === 0) {
abort("Missing parameter of the -o/--optimize option.");
}
if (args[0] !== "speed" && args[0] !== "size") {
abort("Optimization goal must be either \"speed\" or \"size\".");
}
options.optimize = args[0];
break;
case "-h":
case "--help":
printHelp();
exitSuccess();
break;
default:
abort("Unknown option: " + args[0] + ".");
}
nextArg();
}
if (args.length > 0) {
abort("No arguments are allowed.");
}
Runner.run(benchmarks, runCount, options, {
readFile(file) {
return fs.readFileSync(__dirname + "/" + file, "utf8");
},
testStart() {
// Nothing to do.
},
testFinish(benchmark, test, inputSize, parseTime) {
writeResult(test.title, inputSize, parseTime);
},
benchmarkStart(benchmark) {
writeHeading(benchmark.title);
},
benchmarkFinish(benchmark, inputSize, parseTime) {
writeSeparator();
writeResult(benchmark.title + " total", inputSize, parseTime);
},
start() {
writeTableHeader();
},
finish(inputSize, parseTime) {
writeSeparator();
writeResult("Total", inputSize, parseTime);
writeTableFooter();
}
});