cleanup

2026-01-30 19:52:17 +00:00 · 2014-03-01 10:30:44 +11:00
parent 2f88a54ee6
commit 63a608e4db
6 changed files with 112 additions and 96 deletions
--- a/test/algorithms.cpp
+++ b/test/algorithms.cpp
@@ -0,0 +1,89 @@
+// Boost.Convert library test and usage example
+// Copyright (c) 2009-2014 Vladimir Batov.
+// Use, modification and distribution are subject to the Boost Software License,
+// Version 1.0. See http://www.boost.org/LICENSE_1_0.txt.
+
+#include "./test.hpp"
+
+void
+test::algorithms()
+{
+    boost::array<char const*, 5> strings = {{ "0XF", "0X10", "0X11", "0X12", "not int" }};
+    std::vector<int>            integers;
+    std::vector<std::string> new_strings;
+    boost::cstringstream_converter  ccnv; // stringstream-based char converter
+
+    ////////////////////////////////////////////////////////////////////////////
+    // String to integer conversion.
+    // No explicit fallback, i.e. throws on failure. Hex formatting.
+    ////////////////////////////////////////////////////////////////////////////
+    try
+    {
+        std::transform(
+            strings.begin(),
+            strings.end(),
+            std::back_inserter(integers),
+            boost::bind(boost::lexical_cast<int, std::string>, _1));
+
+        BOOST_ASSERT(!"We should not be here");
+    }
+    catch (std::exception&)
+    {
+        // Expected behavior.
+        printf("boost::lexical_cast processed: %d entries.\n", int(integers.size()));
+    }
+    try
+    {
+        std::transform(
+            strings.begin(),
+            strings.end(),
+            std::back_inserter(integers),
+            boost::convert<int>::from<std::string>(ccnv(std::hex)));
+
+        BOOST_ASSERT(!"We should not be here");
+    }
+    catch (std::exception&)
+    {
+        // Expected behavior.
+        printf("boost::convert processed: %d entries.\n", int(integers.size()));
+    }
+    BOOST_ASSERT(integers[0] == 15);
+    BOOST_ASSERT(integers[1] == 16);
+    BOOST_ASSERT(integers[2] == 17);
+    BOOST_ASSERT(integers[3] == 18);
+
+    integers.clear();
+
+    ////////////////////////////////////////////////////////////////////////////
+    // String to integer conversion. Explicit fallback, i.e. no throwing. Hex formatting.
+    ////////////////////////////////////////////////////////////////////////////
+    std::transform(
+        strings.begin(),
+        strings.end(),
+        std::back_inserter(integers),
+        boost::convert<int>::from<std::string>(ccnv(arg::base = cnv::base::hex)).value_or(-1));
+
+    BOOST_ASSERT(integers[0] == 15);
+    BOOST_ASSERT(integers[1] == 16);
+    BOOST_ASSERT(integers[2] == 17);
+    BOOST_ASSERT(integers[3] == 18);
+    BOOST_ASSERT(integers[4] == -1); // Failed conversion
+
+    ////////////////////////////////////////////////////////////////////////////
+    // int-to-string conversion. No explicit fallback value.
+    ////////////////////////////////////////////////////////////////////////////
+    std::transform(
+        integers.begin(),
+        integers.end(),
+        std::back_inserter(new_strings),
+        boost::convert<std::string>::from<int>(ccnv(std::dec)));
+
+//  for (size_t k = 0; k < new_strings.size(); ++k)
+//      printf("%d. %s\n", int(k), new_strings[k].c_str());
+
+    BOOST_ASSERT(new_strings[0] == "15");
+    BOOST_ASSERT(new_strings[1] == "16");
+    BOOST_ASSERT(new_strings[2] == "17");
+    BOOST_ASSERT(new_strings[3] == "18");
+    BOOST_ASSERT(new_strings[4] == "-1");
+}