public void testEmpty_SpecificCapacity()
{
IntList i = new IntList(5);
Assert.AreEqual(0, i.size());
try
{
i.get(0);
Assert.Fail("Accepted 0 index on empty list");
}
catch (IndexOutOfRangeException)
{
Assert.IsTrue(true);
}
}
/**
* Index the region between <code>[ptr, end)</code> to find line starts.
* <para />
* The returned list is 1 indexed. Index 0 contains
* {@link Integer#MIN_VALUE} to pad the list out.
* <para />
* Using a 1 indexed list means that line numbers can be directly accessed
* from the list, so <code>list.get(1)</code> (aka get line 1) returns
* <code>ptr</code>.
* <para />
* The last element (index <code>map.size()-1</code>) always contains
* <code>end</code>.
*
* @param buf
* buffer to scan.
* @param ptr
* position within the buffer corresponding to the first byte of
* line 1.
* @param end
* 1 past the end of the content within <code>buf</code>.
* @return a line map indexing the start position of each line.
*/
public static IntList lineMap(byte[] buf, int ptr, int end)
{
// Experimentally derived from multiple source repositories
// the average number of bytes/line is 36. Its a rough guess
// to initially size our map close to the target.
//
IntList map = new IntList((end - ptr) / 36);
map.fillTo(1, int.MinValue);
for (; ptr < end; ptr = nextLF(buf, ptr))
{
map.add(ptr);
}
map.add(end);
return(map);
}
public void testAdd_SmallGroup()
{
IntList i = new IntList();
int n = 5;
for (int v = 0; v < n; v++)
i.add(10 + v);
Assert.AreEqual(n, i.size());
for (int v = 0; v < n; v++)
Assert.AreEqual(10 + v, i.get(v));
try
{
i.get(n);
Assert.Fail("Accepted out of bound index on list");
}
catch (IndexOutOfRangeException)
{
Assert.IsTrue(true);
}
}
public void testToString()
{
IntList i = new IntList();
i.add(1);
Assert.AreEqual("[1]", i.toString());
i.add(13);
i.add(5);
Assert.AreEqual("[1, 13, 5]", i.toString());
}
public void testSet()
{
IntList i = new IntList();
i.add(1);
Assert.AreEqual(1, i.size());
Assert.AreEqual(1, i.get(0));
i.set(0, 5);
Assert.AreEqual(5, i.get(0));
AssertHelper.Throws<ArgumentException>(() => i.set(5, 5), "accepted set of 5 beyond end of list");
i.set(1, 2);
Assert.AreEqual(2, i.size());
Assert.AreEqual(2, i.get(1));
}
public void testClear()
{
IntList i = new IntList();
int n = 5;
for (int v = 0; v < n; v++)
i.add(10 + v);
Assert.AreEqual(n, i.size());
i.clear();
Assert.AreEqual(0, i.size());
try
{
i.get(0);
Assert.Fail("Accepted 0 index on empty list");
}
catch (IndexOutOfRangeException)
{
Assert.IsTrue(true);
}
}
public void testFillTo100()
{
IntList i = new IntList();
i.fillTo(100, int.MinValue);
Assert.AreEqual(100, i.size());
i.add(3);
Assert.AreEqual(int.MinValue, i.get(99));
Assert.AreEqual(3, i.get(100));
}
public void testFillTo1()
{
IntList i = new IntList();
i.fillTo(1, int.MinValue);
Assert.AreEqual(1, i.size());
i.add(0);
Assert.AreEqual(int.MinValue, i.get(0));
Assert.AreEqual(0, i.get(1));
}
public void testFillTo0()
{
IntList i = new IntList();
i.fillTo(0, int.MinValue);
Assert.AreEqual(0, i.size());
}
public void testAdd_ZeroCapacity()
{
IntList i = new IntList(0);
Assert.AreEqual(0, i.size());
i.add(1);
Assert.AreEqual(1, i.get(0));
}
/**
* Index the region between <code>[ptr, end)</code> to find line starts.
* <para />
* The returned list is 1 indexed. Index 0 contains
* {@link Integer#MIN_VALUE} to pad the list out.
* <para />
* Using a 1 indexed list means that line numbers can be directly accessed
* from the list, so <code>list.get(1)</code> (aka get line 1) returns
* <code>ptr</code>.
* <para />
* The last element (index <code>map.size()-1</code>) always contains
* <code>end</code>.
*
* @param buf
* buffer to scan.
* @param ptr
* position within the buffer corresponding to the first byte of
* line 1.
* @param end
* 1 past the end of the content within <code>buf</code>.
* @return a line map indexing the start position of each line.
*/
public static IntList lineMap(byte[] buf, int ptr, int end)
{
// Experimentally derived from multiple source repositories
// the average number of bytes/line is 36. Its a rough guess
// to initially size our map close to the target.
//
IntList map = new IntList((end - ptr) / 36);
map.fillTo(1, int.MinValue);
for (; ptr < end; ptr = nextLF(buf, ptr))
map.add(ptr);
map.add(end);
return map;
}
/// <summary>
/// Create a new sequence from an existing content byte array.
/// <para />
/// The entire array (indexes 0 through length-1) is used as the content.
/// </summary>
/// <param name="input">
/// the content array. The array is never modified, so passing
/// through cached arrays is safe.
/// </param>
public RawText(byte[] input)
{
content = input;
lines = RawParseUtils.lineMap(content, 0, content.Length);
hashes = computeHashes();
}
private IntList computeHashes()
{
var r = new IntList(lines.size());
r.add(0);
for (int lno = 1; lno < lines.size() - 1; lno++)
{
int ptr = lines.get(lno);
int end = lines.get(lno + 1);
r.add(HashLine(content, ptr, end));
}
r.add(0);
return r;
}
