Revert "Port regexp tests from V8 to Dart."

tests/corelib/regexp/global_test.dart

-// Copyright (c) 2014, the Dart project authors. All rights reserved.
-// Copyright 2012 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-import 'v8_regexp_utils.dart';
-import 'package:expect/expect.dart';
-
-void main() {
-  var str = "ABX X";
-  str = str.replaceAll(new RegExp(r"(\w)?X"), "c");
-  assertEquals("Ac c", str);
-
-  // Test zero-length matches.
-  str = "Als Gregor Samsa eines Morgens";
-  str = str.replaceAll(new RegExp(r"\b"), "/");
-  assertEquals("/Als/ /Gregor/ /Samsa/ /eines/ /Morgens/", str);
-
-  // Test zero-length matches that have non-zero-length sub-captures.
-  str = "It was a pleasure to burn.";
-  str = str.replaceAllMapped(new RegExp(r"(?=(\w+))\b"), (Match m) => m.group(1).length.toString());
-  assertEquals("2It 3was 1a 8pleasure 2to 4burn.", str);
-
-  // Test multiple captures.
-  str = "Try not. Do, or do not. There is no try.";
-  str = str.replaceAllMapped(new RegExp(r"(not?)|(do)|(try)", caseSensitive: false),
-                    (m) { 
-                      if (m.group(1) != null) return "-";
-                      if (m.group(2) != null) return "+";
-                      if (m.group(3) != null) return "=";
-                    });
-  assertEquals("= -. +, or + -. There is - =.", str);
-
-  // Test multiple alternate captures.
-  str = "FOUR LEGS GOOD, TWO LEGS BAD!";
-  str = str.replaceAllMapped(new RegExp(r"(FOUR|TWO) LEGS (GOOD|BAD)"),
-                    (m) {
-                      if (m.group(1) == "FOUR") assertTrue(m.group(2) == "GOOD");
-                      if (m.group(1) == "TWO") assertTrue(m.group(2) == "BAD");
-                      return m.group(0).length - 10;
-                    });
-  assertEquals("4, 2!", str);
-
-
-  // The same tests with UC16.
-
-  //Test that an optional capture is cleared between two matches.
-  str = "AB\u1234 \u1234";
-  str = str.replaceAll(new RegExp(r"(\w)?\u1234"), "c");
-  assertEquals("Ac c", str);
-
-  // Test zero-length matches.
-  str = "Als \u2623\u2642 eines Morgens";
-  str = str.replaceAll(new RegExp(r"\b"), "/");
-
-  // Test zero-length matches that have non-zero-length sub-captures.
-  str = "It was a pleasure to \u70e7.";
-  str = str.replaceAllMapped(new RegExp(r"(?=(\w+))\b"), (m) => "${m.group(1).length}");
-  assertEquals("2It 3was 1a 8pleasure 2to \u70e7.", str);
-
-  // Test multiple captures.
-  str = "Try not. D\u26aa, or d\u26aa not. There is no try.";
-  str = str.replaceAllMapped(new RegExp(r"(not?)|(d\u26aa)|(try)", caseSensitive: false),
-                    (m) { 
-                      if (m.group(1) != null) return "-";
-                      if (m.group(2) != null) return "+";
-                      if (m.group(3) != null) return "=";
-                    });
-  assertEquals("= -. +, or + -. There is - =.", str);
-
-  // Test multiple alternate captures.
-  str = "FOUR \u817f GOOD, TWO \u817f BAD!";
-  str = str.replaceAllMapped(new RegExp(r"(FOUR|TWO) \u817f (GOOD|BAD)"),
-                    (m) {
-                      if (m.group(1) == "FOUR") assertTrue(m.group(2) == "GOOD");
-                      if (m.group(1) == "TWO") assertTrue(m.group(2) == "BAD");
-                      return m.group(0).length - 7;
-                    });
-  assertEquals("4, 2!", str);
-
-  // Test capture that is a real substring.
-  str = "Beasts of England, beasts of Ireland";
-  str = str.replaceAll(new RegExp(r"(.*)"), '~');
-  assertEquals("~~", str);
-
-  // Test zero-length matches that have non-zero-length sub-captures that do not
-  // start at the match start position.
-  str = "up up up up";
-  str = str.replaceAllMapped(new RegExp(r"\b(?=u(p))"), (m) => "${m.group(1).length}");
-
-  assertEquals("1up 1up 1up 1up", str);
-
-
-  // Create regexp that has a *lot* of captures.
-  var re_string = "(a)";
-  for (var i = 0; i < 500; i++) {
-    re_string = "(" + re_string + ")";
-  }
-  re_string = re_string + "1";
-  // re_string = "(((...((a))...)))1"
-
-  var regexps = new List();
-  var last_match_expectations = new List();
-  var first_capture_expectations = new List();
-
-  // Atomic regexp.
-  regexps.add(new RegExp(r"a1"));
-  last_match_expectations.add("a1");
-  first_capture_expectations.add("");
-  // Small regexp (no capture);
-  regexps.add(new RegExp(r"\w1"));
-  last_match_expectations.add("a1");
-  first_capture_expectations.add("");
-  // Small regexp (one capture).
-  regexps.add(new RegExp(r"(a)1"));
-  last_match_expectations.add("a1");
-  first_capture_expectations.add("a");
-  // Large regexp (a lot of captures).
-  regexps.add(new RegExp(re_string));
-  last_match_expectations.add("a1");
-  first_capture_expectations.add("a");
-
-  dynamic test_replace(result_expectation,
-                        subject,
-                        regexp,
-                        replacement) {
-    for (var i = 0; i < regexps.length; i++) {
-      // Conduct tests.
-      assertEquals(result_expectation, subject.replaceAll(regexps[i], replacement));
-    }
-  }
-
-
-  // Test for different number of matches.
-  for (var m = 0; m < 33; m++) {
-    // Create string that matches m times.
-    var subject = "";
-    var test_1_expectation = "";
-    var test_2_expectation = "";
-    var test_3_expectation = (m == 0) ? null : new List();
-    for (var i = 0; i < m; i++) {
-      subject += "a11";
-      test_1_expectation += "x1";
-      test_2_expectation += "1";
-      test_3_expectation.add("a1");
-    }
-
-    // Test 1a: String.replace with string.
-    test_replace(test_1_expectation, subject, new RegExp(r"a1"), "x");
-
-    // Test 2a: String.replace with empty string.
-    test_replace(test_2_expectation, subject, new RegExp(r"a1"), "");
-  }
-
-
-  // Test String hashing (compiling regular expression includes hashing).
-  var crosscheck = "\x80";
-  for (var i = 0; i < 12; i++) crosscheck += crosscheck;
-    new RegExp(crosscheck);
-
-  var subject = "ascii~only~string~here~";
-  var replacement = "\x80";
-  var result = subject.replaceAll(new RegExp(r"~"), replacement);
-  for (var i = 0; i < 5; i++) result += result;
-    new RegExp(result);
-}