Make benchmark suite support |trackLineAndColumn| option

Both the browser and the command-line version of the benchmark suite
runner now allow users to specify a value of the |trackLineAndColumn|
option. In case of the command-line version this required a minor CLI
redesign.

benchmark/index.css

@@ -30,4 +30,5 @@ a, a:visited { color: #3d586c; }
   background-color: #f0f0f0;
 }
 #options #run-count { width: 3em; }
+#options #track-line-and-column { margin-left: 2em; }
 #options #run { width: 5em; margin-left: 2em; }

benchmark/index.html

@@ -11,6 +11,8 @@
     <div id="options">
       <label for="run-count">Run each test</label>
       <input type="text" id="run-count" value="10"> times
+      <input type="checkbox" id="track-line-and-column">
+      <label for="track-line-and-column">Track line and column</label>
       <input type="button" id="run" value="Run">
     </div>
 

benchmark/index.js

@@ -62,7 +62,11 @@ $("#run").click(function() {
     return;
   }
 
-  Runner.run(benchmarks, runCount, {
+  var options = {
+    trackLineAndColumn: $("#track-line-and-column").is(":checked")
+  };
+
+  Runner.run(benchmarks, runCount, options, {
     readFile: function(file) {
       return $.ajax({
         type:     "GET",
@@ -101,7 +105,7 @@ $("#run").click(function() {
     },
 
     start: function() {
-      $("#run-count, #run").attr("disabled", "disabled");
+      $("#run-count, #track-line-and-column, #run").attr("disabled", "disabled");
 
       resultsTable.show();
       $("#results-table tr").slice(1).remove();
@@ -118,7 +122,7 @@ $("#run").click(function() {
 
       $.scrollTo("max", { axis: "y", duration: 500 });
 
-      $("#run-count, #run").removeAttr("disabled");
+      $("#run-count, #track-line-and-column, #run").removeAttr("disabled");
     }
   });
 

benchmark/run

@@ -73,6 +73,20 @@ function writeTableFooter() {
 
 /* Helpers */
 
+function printHelp() {
+  util.puts("Usage: run [options]");
+  util.puts("");
+  util.puts("Runs PEG.js benchmark suite.");
+  util.puts("");
+  util.puts("Options:");
+  util.puts("  -n, --run-count <n>          number of runs (default: 10)");
+  util.puts("      --track-line-and-column  make tested parsers track line and column");
+}
+
+function exitSuccess() {
+  process.exit(0);
+}
+
 function exitFailure() {
   process.exit(1);
 }
@@ -82,28 +96,58 @@ function abort(message) {
   exitFailure();
 }
 
-/* Main */
+/* Arguments */
 
 var args = process.argv.slice(2); // Trim "node" and the script path.
 
-switch (args.length) {
-  case 0:
-    var runCount = 10;
-    break;
-  case 1:
-    var runCount = parseInt(args[0]);
-    if (isNaN(runCount) || runCount <= 0) {
-      abort("Number of runs must be a positive integer.");
-    }
-    break;
-  default:
-    abort("Too many arguments.");
+function isOption(arg) {
+  return /^-/.test(arg);
+}
+
+function nextArg() {
+  args.shift();
 }
 
-util.puts("Each test is run " + runCount + " times.");
-util.puts("");
+/* Main */
+
+var runCount = 10;
+var options = { trackLineAndColumn: false };
+
+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.");
+      }
+      var runCount = parseInt(args[0]);
+      if (isNaN(runCount) || runCount <= 0) {
+        abort("Number of runs must be a positive integer.");
+      }
+      break;
+
+    case "--track-line-and-column":
+      options.trackLineAndColumn = true;
+      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, {
+Runner.run(benchmarks, runCount, options, {
   readFile: function(file) {
     return fs.readFileSync(__dirname + "/" + file, "utf8");
   },

benchmark/runner.js

@@ -1,5 +1,5 @@
 Runner = {
-  run: function(benchmarks, runCount, callbacks) {
+  run: function(benchmarks, runCount, options, callbacks) {
 
     /* Queue */
 
@@ -52,7 +52,8 @@ Runner = {
         callbacks.benchmarkStart(benchmarks[i]);
 
         state.parser = PEG.buildParser(
-          callbacks.readFile("../examples/" + benchmarks[i].id + ".pegjs")
+          callbacks.readFile("../examples/" + benchmarks[i].id + ".pegjs"),
+          options
         );
         state.benchmarkInputSize = 0;
         state.benchmarkParseTime = 0;