src/qpid/RangeSet.h: generic set implementation using ranges.

 - no heap allocation for simple sets (<= 3 ranges)
 - binary searches for o(log(n)) performance in complex sets


git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/trunk@650198 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 117 insertions, 0 deletions

diff --git a/qpid/cpp/src/tests/RangeSet.cpp b/qpid/cpp/src/tests/RangeSet.cpp
new file mode 100644
index 0000000000..bc125ed4e2
--- /dev/null
+++ b/qpid/cpp/src/tests/RangeSet.cpp
@@ -0,0 +1,117 @@
+/*
+ *
+ * Copyright (c) 2006 The Apache Software Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+
+#include "unit_test.h"
+#include "test_tools.h"
+#include "qpid/RangeSet.h"
+
+using namespace std;
+using namespace qpid;
+
+QPID_AUTO_TEST_SUITE(RangeSetTestSuite)
+
+typedef qpid::Range<int> Range;
+typedef qpid::RangeSet<int> RangeSet;
+
+QPID_AUTO_TEST_CASE(testEmptyRange) {
+    Range r;
+    BOOST_CHECK(r.empty());
+    BOOST_CHECK(!r.contains(0));
+    //    BOOST_CHECK(r.contiguous(0));
+}
+
+QPID_AUTO_TEST_CASE(testRangeSetAddPoint) {
+    RangeSet r;
+    BOOST_CHECK(r.empty());
+    r += 3;
+    BOOST_CHECK_MESSAGE(r.contains(3), r);
+    BOOST_CHECK_MESSAGE(r.contains(Range(3,4)), r);
+    BOOST_CHECK(!r.empty());
+    r += 5;
+    BOOST_CHECK_MESSAGE(r.contains(5), r);        
+    BOOST_CHECK_MESSAGE(r.contains(Range(5,6)), r);        
+    BOOST_CHECK_MESSAGE(!r.contains(Range(3,6)), r);
+    r += 4;
+    BOOST_CHECK_MESSAGE(r.contains(Range(3,6)), r);
+}
+
+QPID_AUTO_TEST_CASE(testRangeSetAddRange) {
+    RangeSet r;
+    r += Range(0,3);
+    BOOST_CHECK(r.contains(Range(0,3)));
+    r += Range(4,6);
+    BOOST_CHECK_MESSAGE(r.contains(Range(4,6)), r);
+    r += 3;
+    BOOST_CHECK_MESSAGE(r.contains(Range(0,6)), r);
+    BOOST_CHECK(r.front() == 0);
+    BOOST_CHECK(r.back() == 6);
+}
+
+QPID_AUTO_TEST_CASE(testRangeSetIterate) {
+    RangeSet r;
+    (((r += 1) += 10) += Range(4,7)) += 2;
+    BOOST_MESSAGE(r);
+    std::vector<int> actual;
+    std::copy(r.begin(), r.end(), std::back_inserter(actual));
+    std::vector<int> expect = boost::assign::list_of(1)(2)(4)(5)(6)(10);
+    BOOST_CHECK_EQUAL(expect, actual);
+}
+
+QPID_AUTO_TEST_CASE(testRangeSetRemove) {
+    BOOST_CHECK_EQUAL(RangeSet(0,5)-3, RangeSet(0,3)+Range(4,5));
+    BOOST_CHECK_EQUAL(RangeSet(1,5)-5, RangeSet(1,5));
+    BOOST_CHECK_EQUAL(RangeSet(1,5)-0, RangeSet(1,5));
+
+    RangeSet r(RangeSet(0,5)+Range(10,15)+Range(20,25));
+
+    BOOST_CHECK_EQUAL(r-Range(0,5), RangeSet(10,15)+Range(20,25));
+    BOOST_CHECK_EQUAL(r-Range(10,15), RangeSet(0,5)+Range(20,25));
+    BOOST_CHECK_EQUAL(r-Range(20,25), RangeSet(0,5)+Range(10,15));
+
+    BOOST_CHECK_EQUAL(r-Range(-5, 30), RangeSet());
+
+    BOOST_CHECK_EQUAL(r-Range(-5, 7), RangeSet(10,15)+Range(20,25));
+    BOOST_CHECK_EQUAL(r-Range(8,19), RangeSet(0,5)+Range(20,25));
+    BOOST_CHECK_EQUAL(r-Range(17,30), RangeSet(0,5)+Range(10,15));
+
+    BOOST_CHECK_EQUAL(r-Range(-5, 5), RangeSet(10,15)+Range(20,25));
+    BOOST_CHECK_EQUAL(r-Range(10,19), RangeSet(0,5)+Range(20,25));
+    BOOST_CHECK_EQUAL(r-Range(18,25), RangeSet(0,5)+Range(10,15));
+
+    BOOST_CHECK_EQUAL(r-Range(-3, 3), RangeSet(3,5)+Range(10,15)+Range(20,25));
+    BOOST_CHECK_EQUAL(r-Range(3, 7), RangeSet(0,2)+Range(10,15)+Range(20,25));
+    BOOST_CHECK_EQUAL(r-Range(3, 12), RangeSet(0,3)+Range(12,15)+Range(20,25));
+    BOOST_CHECK_EQUAL(r-Range(3, 22), RangeSet(12,15)+Range(22,25));
+    BOOST_CHECK_EQUAL(r-Range(12, 22), RangeSet(0,5)+Range(10,11)+Range(22,25));
+}
+
+QPID_AUTO_TEST_CASE(testRangeContaining) {
+    RangeSet r;
+    (((r += 1) += Range(3,5)) += 7);
+    BOOST_CHECK_EQUAL(r.rangeContaining(0), Range(0,0));
+    BOOST_CHECK_EQUAL(r.rangeContaining(1), Range(1,2));
+    BOOST_CHECK_EQUAL(r.rangeContaining(2), Range(2,2));
+    BOOST_CHECK_EQUAL(r.rangeContaining(3), Range(3,5));
+    BOOST_CHECK_EQUAL(r.rangeContaining(4), Range(3,5));
+    BOOST_CHECK_EQUAL(r.rangeContaining(5), Range(5,5));
+    BOOST_CHECK_EQUAL(r.rangeContaining(6), Range(6,6));
+    BOOST_CHECK_EQUAL(r.rangeContaining(7), Range(7,8));
+}
+
+QPID_AUTO_TEST_SUITE_END()