1 files changed, 136 insertions, 0 deletions
diff --git a/src/boost/libs/spirit/classic/test/epsilon_tests.cpp b/src/boost/libs/spirit/classic/test/epsilon_tests.cpp
new file mode 100644
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--- /dev/null
+++ b/src/boost/libs/spirit/classic/test/epsilon_tests.cpp
@@ -0,0 +1,136 @@
+/*=============================================================================
+    Copyright (c) 2002-2003 Martin Wille
+    http://spirit.sourceforge.net/
+
+    Use, modification and distribution is subject to the Boost Software
+    License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+    http://www.boost.org/LICENSE_1_0.txt)
+=============================================================================*/
+#include <iostream>
+#include <cstring>
+#include <boost/detail/lightweight_test.hpp>
+
+// This test program only includes the epsilon.hpp header from Spirit
+#include <boost/spirit/include/classic_epsilon.hpp>
+#include <boost/detail/lightweight_test.hpp>
+#include "impl/var.hpp"
+#include "impl/string_length.hpp"
+
+using namespace test;
+static BOOST_SPIRIT_CLASSIC_NS::parse_info<char const *> pi;
+
+////////////////////////////////////////////////
+// These macros are used with BOOST_TEST
+#define matches (pi.hit)
+#define full_match (pi.hit && pi.full)
+#define partial_match (pi.hit && !pi.full)
+#define no_match (!pi.hit && !pi.full)
+#define zero_length_match (pi.length == 0)
+#define stop_equals_start (pi.stop == s)
+
+template<typename ParserT>
+static void
+parse(char const *s, ParserT const &p, bool match)
+{
+    
+    pi = BOOST_SPIRIT_CLASSIC_NS::parse(s, s + test_impl::string_length(s), p);
+    if (match)
+    {
+        BOOST_TEST(matches);
+        BOOST_TEST(zero_length_match);
+        BOOST_TEST(stop_equals_start);
+    }
+    else
+    {
+        BOOST_TEST(no_match);
+    }
+}
+
+static char const empty[] = "";
+static char const not_empty[] = "asdfgh";
+
+////////////////////////////////////////////////
+// Test wether epsilon_p/eps_p work as
+// primitive parsers
+static void
+epsilon_as_primitive()
+{
+    // This test case also is a compile time check wether
+    // both eps_p and epsilon_p are present.
+
+    parse(empty, BOOST_SPIRIT_CLASSIC_NS::epsilon_p, true);
+    BOOST_TEST(full_match);
+    parse(not_empty, BOOST_SPIRIT_CLASSIC_NS::epsilon_p, true);
+    BOOST_TEST(partial_match);
+
+    parse(empty, BOOST_SPIRIT_CLASSIC_NS::eps_p, true);
+    BOOST_TEST(full_match);
+    parse(not_empty, BOOST_SPIRIT_CLASSIC_NS::eps_p, true);
+    BOOST_TEST(partial_match);
+}
+
+////////////////////////////////////////////////
+// Test wether epsilon_p/eps_p work correctly as
+// a parser generator for creating parsers from
+// functors
+static void
+epsilon_as_parser_generator_for_functors()
+{
+    bool       flag = false;
+    parse(empty, BOOST_SPIRIT_CLASSIC_NS::epsilon_p(var(flag)), flag);
+    BOOST_TEST(no_match);
+
+    flag = true;
+    parse(empty, BOOST_SPIRIT_CLASSIC_NS::epsilon_p(var(flag)), flag);
+    BOOST_TEST(full_match);
+}
+
+////////////////////////////////////////////////
+// Test wether epsilon_p/eps_p work correctly as
+// a parser generator for creating parsers from
+// other parsers
+static void
+epsilon_as_parser_generator_for_parsers()
+{
+    // This test case uses a parser created by epsilon_p
+    // as body-parser for another invokation of epsilon_p
+
+    bool        flag = false;
+    parse(empty, BOOST_SPIRIT_CLASSIC_NS::epsilon_p(
+            BOOST_SPIRIT_CLASSIC_NS::epsilon_p(var(flag))), flag);
+    BOOST_TEST(no_match);
+
+    flag = true;
+    parse(empty, BOOST_SPIRIT_CLASSIC_NS::epsilon_p(
+            BOOST_SPIRIT_CLASSIC_NS::epsilon_p(var(flag))), flag);
+    BOOST_TEST(full_match);
+}
+
+////////////////////////////////////////////////
+// Test wether epsilon_p/eps_p support negation
+static void
+negation_operator_for_epsilon()
+{
+    bool       flag = false;
+    parse(empty, ~BOOST_SPIRIT_CLASSIC_NS::epsilon_p(var(flag)), !flag);
+    BOOST_TEST(full_match);
+    parse(empty, ~~BOOST_SPIRIT_CLASSIC_NS::epsilon_p(var(flag)), flag);
+    BOOST_TEST(no_match);
+
+    flag = true;
+    parse(empty, ~BOOST_SPIRIT_CLASSIC_NS::epsilon_p(var(flag)), !flag);
+    BOOST_TEST(no_match);
+    parse(empty, ~~BOOST_SPIRIT_CLASSIC_NS::epsilon_p(var(flag)), flag);
+    BOOST_TEST(full_match);
+}
+
+int
+main()
+{
+    epsilon_as_primitive();
+    epsilon_as_parser_generator_for_functors();
+    epsilon_as_parser_generator_for_parsers();
+    negation_operator_for_epsilon();
+
+    return boost::report_errors();
+}