Teach qmake's #include parser to recognize C++11 Raw strings.

Can't sensibly test unless the compiler does support raw strings,
since any test that would catch qmake's (prior) inability to parse raw
strings would necessarily confuse the C++ compiler in the same way.
This even applies (in test app code) to any #if-ery around the raw
string, since tokenization happens before preprocessor directives are
resolved.  So the #if-ery on Q_COMPILER_RAW_STRINGS has to be in
tst_qmake.cpp, not the test app it builds.

Change-Id: I4a461f515adff288b54fb273fd9996f9b906d11c
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>

qmake/generators/makefiledeps.cpp

@@ -555,15 +555,44 @@ bool QMakeSourceFileInfo::findDeps(SourceFile *file)
 
                 // quoted strings
                 if (buffer[x] == '\'' || buffer[x] == '"') {
-                    const char term = buffer[x];
-                    while (++x < buffer_len) {
-                        if (buffer[x] == term) {
-                            ++x;
-                            break;
-                        } else if (buffer[x] == '\\') {
-                            ++x;
-                        } else if (qmake_endOfLine(buffer[x])) {
-                            ++line_count;
+                    // It might be a C++11 raw string.
+                    bool israw = false;
+                    if (buffer[x] == '"' && x > 0) {
+                        int y = x;
+                        while (--y > 0 && (buffer[y] == '8' || buffer[y] == 'u' || buffer[y] == 'U')) {} // skip
+                        israw = (buffer[y] == 'R');
+                    }
+                    if (israw) {
+                        x++;
+                        const char *const delim = buffer + x;
+                        while (x < buffer_len && buffer[x] != '(')
+                            x++;
+                        /*
+                          Not checking correctness (trust real compiler to do that):
+                          - no controls, spaces, '(', ')', '\\' or (presumably) '"' in delim;
+                          - at most 16 bytes in delim
+                         */
+
+                        const int delimlen = buffer + x - delim;
+                        while (++x < buffer_len
+                               && (buffer[x] != ')'
+                                   || (delimlen > 0 &&
+                                       strncmp(buffer + x + 1, delim, delimlen))
+                                   || buffer[x + 1 + delimlen] != '"')) {} // skip
+                        // buffer[x] is ')'
+                        x += 1 + delimlen; // 1 for ')', then delim
+                        // buffer[x] is '"'
+                    } else {
+                        const char term = buffer[x];
+                        while (++x < buffer_len) {
+                            if (buffer[x] == term) {
+                                ++x;
+                                break;
+                            } else if (buffer[x] == '\\') {
+                                ++x;
+                            } else if (qmake_endOfLine(buffer[x])) {
+                                ++line_count;
+                            }
                         }
                     }
                 }

tests/auto/tools/qmake/testdata/rawString/main.cpp

+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+static const char raw[] = R"blah(lorem " ipsum /*)blah";
+#include <moc_object1.cpp>
+
+int main () { return 0; }

tests/auto/tools/qmake/testdata/rawString/object1.h

+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#include <QObject>
+
+class Object1 : public QObject
+{
+    Q_OBJECT
+};
+

tests/auto/tools/qmake/testdata/rawString/rawString.pro

+DESTDIR = ./
+
+HEADERS += object1.h
+SOURCES += main.cpp

tests/auto/tools/qmake/tst_qmake.cpp

@@ -79,6 +79,7 @@ private slots:
     void one_space();
     void findMocs();
     void findDeps();
+    void rawString();
 #if defined(Q_OS_MAC)
     void bundle_spaces();
 #endif
@@ -406,6 +407,24 @@ void tst_qmake::findDeps()
     QVERIFY( test_compiler.removeMakefile(workDir) );
 }
 
+void tst_qmake::rawString()
+{
+#ifdef Q_COMPILER_RAW_STRINGS
+    QString workDir = base_path + "/testdata/rawString";
+
+    QVERIFY( test_compiler.qmake(workDir, "rawString") );
+    QVERIFY( test_compiler.make(workDir) );
+    QVERIFY( test_compiler.exists(workDir, "rawString", Exe, "1.0.0" ) );
+    QVERIFY( test_compiler.makeClean(workDir) );
+    QVERIFY( test_compiler.exists(workDir, "rawString", Exe, "1.0.0" ) );
+    QVERIFY( test_compiler.makeDistClean(workDir ) );
+    QVERIFY( !test_compiler.exists(workDir, "rawString", Exe, "1.0.0" ) );
+    QVERIFY( test_compiler.removeMakefile(workDir) );
+#else
+    QSKIP("Test for C++11 raw strings depends on compiler support for them");
+#endif
+}
+
 struct TempFile
     : QFile
 {