src/v8/test/js-perf-test/Strings/string-substring.js

// Copyright 2017 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

const subjects = [
  'abcde', '123456', 'aqwsde', 'nbvveqxu', 'f03ks-120-3;jfkm;ajp3f',
  'sd-93u498thikefnow8y3-0rh1nalksfnwo8y3t19-3r8hoiefnw'
];

// Drop first element.

function StringDropFirstSlice() {
  var sum = "";

  for (var j = 0; j < subjects.length; ++j) {
    let s = subjects[j];
    sum += s.slice(1);
  }

  return sum;
}
createSuiteWithWarmup('StringDropFirstSlice', 5, StringDropFirstSlice);

function StringDropFirstSubstr() {
  var sum = "";

  for (var j = 0; j < subjects.length; ++j) {
    let s = subjects[j];
    sum += s.substr(1);
  }

  return sum;
}
createSuiteWithWarmup('StringDropFirstSubstr', 5, StringDropFirstSubstr);

function StringDropFirstSubstring() {
  var sum = "";

  for (var j = 0; j < subjects.length; ++j) {
    let s = subjects[j];
    sum += s.substring(1);
  }

  return sum;
}
createSuiteWithWarmup('StringDropFirstSubstring', 5, StringDropFirstSubstring);

// Take first element.

function StringTakeFirstSlice() {
  var sum = "";

  for (var j = 0; j < subjects.length; ++j) {
    let s = subjects[j];
    sum += s.slice(0,1);
  }

  return sum;
}
createSuiteWithWarmup('StringTakeFirstSlice', 5, StringTakeFirstSlice);

function StringTakeFirstSubstr() {
  var sum = "";

  for (var j = 0; j < subjects.length; ++j) {
    let s = subjects[j];
    sum += s.substr(0,1);
  }

  return sum;
}
createSuiteWithWarmup('StringTakeFirstSubstr', 5, StringTakeFirstSubstr);

function StringTakeFirstSubstring() {
  var sum = "";

  for (var j = 0; j < subjects.length; ++j) {
    let s = subjects[j];
    sum += s.substring(0, 1);
  }

  return sum;
}
createSuiteWithWarmup('StringTakeFirstSubstring', 5, StringTakeFirstSubstring);

// Drop last element.

function StringDropLastSlice() {
  var sum = "";

  for (var j = 0; j < subjects.length; ++j) {
    let s = subjects[j];
    sum += s.slice(0, -1);
  }

  return sum;
}
createSuiteWithWarmup('StringDropLastSlice', 5, StringDropLastSlice);

function StringDropLastSubstr() {
  var sum = "";

  for (var j = 0; j < subjects.length; ++j) {
    let s = subjects[j];
    sum += s.substr(0, s.length-1);
  }

  return sum;
}
createSuiteWithWarmup('StringDropLastSubstr', 5, StringDropLastSubstr);

function StringDropLastSubstring() {
  var sum = "";

  for (var j = 0; j < subjects.length; ++j) {
    let s = subjects[j];
    sum += s.substring(0, s.length-1);
  }

  return sum;
}
createSuiteWithWarmup('StringDropLastSubstring', 5, StringDropLastSubstring);

// Take last element.

function StringTakeLastSlice() {
  var sum = "";

  for (var j = 0; j < subjects.length; ++j) {
    let s = subjects[j];
    sum += s.slice(-1);
  }

  return sum;
}
createSuiteWithWarmup('StringTakeLastSlice', 5, StringTakeLastSlice);

function StringTakeLastSubstr() {
  var sum = "";

  for (var j = 0; j < subjects.length; ++j) {
    let s = subjects[j];
    sum += s.substr(-1);
  }

  return sum;
}
createSuiteWithWarmup('StringTakeLastSubstr', 5, StringTakeLastSubstr);

function StringTakeLastSubstring() {
  var sum = "";

  for (var j = 0; j < subjects.length; ++j) {
    let s = subjects[j];
    sum += s.substring(s.length-1, s.length);
  }

  return sum;
}
createSuiteWithWarmup('StringTakeLastSubstring', 5, StringTakeLastSubstring);

// Drop first and last.

function StringDropFirstSlice() {
  var sum = "";

  for (var j = 0; j < subjects.length; ++j) {
    let s = subjects[j];
    sum += s.slice(1, -1);
  }

  return sum;
}
createSuiteWithWarmup('StringDropFirstSlice', 5, StringDropFirstSlice);

function StringDropFirstSubstr() {
  var sum = "";

  for (var j = 0; j < subjects.length; ++j) {
    let s = subjects[j]
    sum += s.substr(1, s.length-2);
  }

  return sum;
}
createSuiteWithWarmup('StringDropFirstSubstr', 5, StringDropFirstSubstr);

function StringDropFirstSubstring() {
  var sum = "";

  for (var j = 0; j < subjects.length; ++j) {
    let s = subjects[j];
    sum += s.substring(1, s.length-1);
  }

  return sum;
}
createSuiteWithWarmup('StringDropFirstSubstring', 5, StringDropFirstSubstring);