JezK

Edit File: debug-liveedit-diff.js

// Copyright 2010 the V8 project authors. All rights reserved.
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// modification, are permitted provided that the following conditions are
// met:
//
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//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
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//       with the distribution.
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//
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// Flags: --expose-debug-as debug
// Get the Debug object exposed from the debug context global object.

Debug = debug.Debug

function CheckCompareOneWay(s1, s2) {
  var diff_array = Debug.LiveEdit.TestApi.CompareStrings(s1, s2);

var pos1 = 0;
  var pos2 = 0;
  print("Compare:");
  print("s1='" + s1 + "'");
  print("s2='" + s2 + "'");
  print("Diff:");
  print("" + diff_array);
  for (var i = 0; i < diff_array.length; i += 3) {
    var similar_length = diff_array[i] - pos1;
    assertEquals(s1.substring(pos1, pos1 + similar_length),
                 s2.substring(pos2, pos2 + similar_length));

print(s1.substring(pos1, pos1 + similar_length));
    pos1 += similar_length;
    pos2 += similar_length;
    print("<<< " + pos1 + " " + diff_array[i + 1]);
    print(s1.substring(pos1, diff_array[i + 1]));
    print("===");
    print(s2.substring(pos2, diff_array[i + 2]));
    print(">>> " + pos2 + " " + diff_array[i + 2]);
    pos1 = diff_array[i + 1];
    pos2 = diff_array[i + 2];
  }
  {
    // After last change
    var similar_length = s1.length - pos1;
    assertEquals(similar_length, s2.length - pos2);
    assertEquals(s1.substring(pos1, pos1 + similar_length),
                 s2.substring(pos2, pos2 + similar_length));

print(s1.substring(pos1, pos1 + similar_length));
  }
  print("");
}

function CheckCompareOneWayPlayWithLF(s1, s2) {
  var s1Oneliner = s1.replace(/\n/g, ' ');
  var s2Oneliner = s2.replace(/\n/g, ' ');
  CheckCompareOneWay(s1, s2);
  CheckCompareOneWay(s1Oneliner, s2);
  CheckCompareOneWay(s1, s2Oneliner);
  CheckCompareOneWay(s1Oneliner, s2Oneliner);
}

function CheckCompare(s1, s2) {
  CheckCompareOneWayPlayWithLF(s1, s2);
  CheckCompareOneWayPlayWithLF(s2, s1);
}

CheckCompare("", "");

CheckCompare("a", "b");

CheckCompare(
    "yesterday\nall\nmy\ntroubles\nseemed\nso\nfar\naway",
    "yesterday\nall\nmy\ntroubles\nseem\nso\nfar\naway"
);

CheckCompare(
    "yesterday\nall\nmy\ntroubles\nseemed\nso\nfar\naway",
    "\nall\nmy\ntroubles\nseemed\nso\nfar\naway"
);

CheckCompare(
    "yesterday\nall\nmy\ntroubles\nseemed\nso\nfar\naway",
    "all\nmy\ntroubles\nseemed\nso\nfar\naway"
);

CheckCompare(
    "yesterday\nall\nmy\ntroubles\nseemed\nso\nfar\naway",
    "yesterday\nall\nmy\ntroubles\nseemed\nso\nfar\naway\n"
);

CheckCompare(
    "yesterday\nall\nmy\ntroubles\nseemed\nso\nfar\naway",
    "yesterday\nall\nmy\ntroubles\nseemed\nso\n"
);

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