initial commit

Signed-off-by: Peter Siegmund <mars3142@noreply.mars3142.dev>

libs/wxWidgets-3.3.1/tests/benchmarks/regex.cpp

@@ -0,0 +1,74 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        tests/benchmarks/regex.cpp
+// Purpose:     wxRegEx benchmarks
+// Author:      Vadim Zeitlin
+// Created:     2018-11-15
+// Copyright:   (c) 2018 Vadim Zeitlin <vadim@wxwidgets.org>
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#include "wx/ffile.h"
+#include "wx/regex.h"
+
+#include "bench.h"
+
+// ----------------------------------------------------------------------------
+// Benchmark relative costs of compiling and matching for a simple regex
+// ----------------------------------------------------------------------------
+
+static const char* const RE_SIMPLE = ".";
+
+BENCHMARK_FUNC(RECompile)
+{
+    return wxRegEx(RE_SIMPLE).IsValid();
+}
+
+BENCHMARK_FUNC(REMatch)
+{
+    static wxRegEx re(RE_SIMPLE);
+    return re.Matches("foo");
+}
+
+BENCHMARK_FUNC(RECompileAndMatch)
+{
+    return wxRegEx(RE_SIMPLE).Matches("foo");
+}
+
+// ----------------------------------------------------------------------------
+// Benchmark the cost of using a more complicated regex
+// ----------------------------------------------------------------------------
+
+namespace
+{
+
+// Use the contents of an already existing test file.
+const wxString& GetTestText()
+{
+    static wxString text;
+    if ( text.empty() )
+    {
+        wxFFile("htmltest.html").ReadAll(&text);
+    }
+
+    return text;
+}
+
+} // anonymous namespace
+
+BENCHMARK_FUNC(REFindTD)
+{
+    // This is too simplistic, but good enough for benchmarking.
+    static wxRegEx re("<td>[^<]*</td>", wxRE_ICASE | wxRE_NEWLINE);
+
+    int matches = 0;
+    for ( const wxChar* p = GetTestText().c_str(); re.Matches(p); ++matches )
+    {
+        size_t start, len;
+        if ( !re.GetMatch(&start, &len) )
+            return false;
+
+        p += start + len;
+    }
+
+    return matches == 21; // result of "grep -c"
+}