Totally rework the Range class. Now the range is from [start, end)

to be consistent with the way that the stl works.  It also makes
lots of other stuff easier.  (Maybe those guys were smart?)
Overload the various comparison operators so that you can test
for overlapping of ranges, etc.

base/range.hh:
    Totally rework the Range class.  Now the range is from [start, end)
    to be consistent with the way that the stl works.  It also makes
    lots of other stuff easier.  (Maybe those guys were smart?)
    Overload the various comparison operators so that you can test
    for overlapping of ranges, etc.

    make parse function private and offer operator= instead
    isValid -> valid
    and for you erik, I add comments
test/Makefile:
    add range.o
test/rangetest.cc:
    better tests

--HG--
extra : convert_revision : dd58720aa3d02f20b03e933f2eaa3320c82bb27a

1 files changed, 83 insertions, 0 deletions

diff --git a/base/range.cc b/base/range.cc
new file mode 100644
index 000000000..0a4876e89
--- /dev/null
+++ b/base/range.cc
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2003 The Regents of The University of Michigan
+ * 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 the copyright holders 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.
+ */
+
+#include "base/intmath.hh"
+#include "base/range.hh"
+#include "base/str.hh"
+
+using namespace std;
+
+template <class T>
+bool
+__x_parse_range(const std::string &str, T &start, T &end)
+{
+    std::vector<std::string> values;
+    tokenize(values, str, ':');
+
+    T thestart, theend;
+
+    if (values.size() != 2)
+        return false;
+
+    std::string s = values[0];
+    std::string e = values[1];
+
+    if (!to_number(s, thestart))
+        return false;
+
+    bool increment = (e[0] == '+');
+    if (increment)
+        e = e.substr(1);
+
+    if (!to_number(e, theend))
+        return false;
+
+    if (increment)
+        theend += thestart;
+
+    start = thestart;
+    end = theend;
+
+    return true;
+}
+
+#define RANGE_PARSE(type) \
+template<> bool \
+__parse_range(const std::string &s, type &start, type &end) \
+{ return __x_parse_range(s, start, end); }
+
+RANGE_PARSE(unsigned long long);
+RANGE_PARSE(signed long long);
+RANGE_PARSE(unsigned long);
+RANGE_PARSE(signed long);
+RANGE_PARSE(unsigned int);
+RANGE_PARSE(signed int);
+RANGE_PARSE(unsigned short);
+RANGE_PARSE(signed short);
+RANGE_PARSE(unsigned char);
+RANGE_PARSE(signed char);