Update of /cvsroot/boost/boost/libs/xpressive/test
In directory sc8-pr-cvs3.sourceforge.net:/tmp/cvs-serv2380
Modified Files:
test_actions.cpp
Log Message:
a regex calculator that calculates
Index: test_actions.cpp
===================================================================
RCS file: /cvsroot/boost/boost/libs/xpressive/test/test_actions.cpp,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -d -r1.1 -r1.2
--- test_actions.cpp 22 Mar 2007 19:40:18 -0000 1.1
+++ test_actions.cpp 22 Mar 2007 22:16:12 -0000 1.2
@@ -5,8 +5,11 @@
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+#define BOOST_XPRESSIVE_BETTER_ERRORS
+
#include <map>
#include <list>
+#include <stack>
#include <numeric>
#include <boost/xpressive/xpressive_static.hpp>
#include <boost/xpressive/regex_actions.hpp>
@@ -72,7 +75,7 @@
}
else
{
- BOOST_REQUIRE_EQUAL(result.size(), 4);
+ BOOST_REQUIRE_EQUAL(result.size(), 4u);
BOOST_CHECK_EQUAL(*result.begin(), 1);
BOOST_CHECK_EQUAL(*++result.begin(), 23);
BOOST_CHECK_EQUAL(*++++result.begin(), 456);
@@ -98,13 +101,72 @@
}
else
{
- BOOST_REQUIRE_EQUAL(result.size(), 3);
+ BOOST_REQUIRE_EQUAL(result.size(), 3u);
BOOST_CHECK_EQUAL(result["aaa"], 1);
BOOST_CHECK_EQUAL(result["bbb"], 23);
BOOST_CHECK_EQUAL(result["ccc"], 456);
}
}
+///////////////////////////////////////////////////////////////////////////////
+// test5
+// calculator that calculates. This is just silly, but hey.
+void test5()
+{
+ using namespace boost::xpressive;
+
+ int left = 0, right = 0;
+ std::stack<int> stack;
+ std::string str("4+5*(1+1)");
+
+ sregex group, factor, term, expression;
+
+ group = '(' >> by_ref(expression) >> ')';
+ factor = (+_d)[ push(stack, as<int>(_)) ] | group;
+ term = factor >> *(
+ ('*' >> factor)
+ [ var(right) = top(stack)
+ , pop(stack)
+ , var(left) = top(stack)
+ , pop(stack)
+ , push(stack, var(left) * var(right))
+ ]
+ | ('/' >> factor)
+ [ var(right) = top(stack)
+ , pop(stack)
+ , var(left) = top(stack)
+ , pop(stack)
+ , push(stack, var(left) / var(right))
+ ]
+ );
+ expression = term >> *(
+ ('+' >> term)
+ [ var(right) = top(stack)
+ , pop(stack)
+ , var(left) = top(stack)
+ , pop(stack)
+ , push(stack, var(left) + var(right))
+ ]
+ | ('-' >> term)
+ [ var(right) = top(stack)
+ , pop(stack)
+ , var(left) = top(stack)
+ , pop(stack)
+ , push(stack, var(left) - var(right))
+ ]
+ );
+
+ if(!regex_match(str, expression))
+ {
+ BOOST_ERROR("oops");
+ }
+ else
+ {
+ BOOST_REQUIRE_EQUAL(stack.size(), 1u);
+ BOOST_CHECK_EQUAL(stack.top(), 14);
+ }
+}
+
using namespace boost::unit_test;
///////////////////////////////////////////////////////////////////////////////
@@ -117,6 +179,7 @@
test->add(BOOST_TEST_CASE(&test2));
test->add(BOOST_TEST_CASE(&test3));
test->add(BOOST_TEST_CASE(&test4));
+ test->add(BOOST_TEST_CASE(&test5));
return test;
}
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