Initial work on an AST dumper.

That will be pretty helpful to understand what's going wrong with
templates.

tests/manual/cplusplus-dump/c++

+#!/bin/sh
+me=$(dirname $0)
+${CPP-gcc} -U__BLOCKS__ -xc++ -E -include $me/conf.c++ $* > $me/file.i
+$me/cplusplus0 $me/file.i
+

tests/manual/cplusplus-dump/conf.c++

+#define __extension__
+#define __context__
+#define __range__
+#define __asm(a...)
+#define __asm__(a...)
+#define   restrict
+#define __restrict
+#define __restrict__
+// #define __weak
+#define __builtin_va_arg(a,b) ((b)0)
+#define __stdcall
+#define __fastcall
+#define __imag__
+#define __real__
+#define __complex__

tests/manual/cplusplus-dump/cplusplus-dump.pro

+QT = core gui
+macx:CONFIG -= app_bundle
+TARGET = cplusplus0
+
+include(../../../src/libs/cplusplus/cplusplus-lib.pri)
+
+# Input
+SOURCES += main.cpp
+
+unix {
+    debug:OBJECTS_DIR = $${OUT_PWD}/.obj/debug-shared
+    release:OBJECTS_DIR = $${OUT_PWD}/.obj/release-shared
+
+    debug:MOC_DIR = $${OUT_PWD}/.moc/debug-shared
+    release:MOC_DIR = $${OUT_PWD}/.moc/release-shared
+
+    RCC_DIR = $${OUT_PWD}/.rcc/
+    UI_DIR = $${OUT_PWD}/.uic/
+}

tests/manual/cplusplus-dump/main.cpp

+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** Commercial Usage
+**
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** 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 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+**
+**************************************************************************/
+
+#include <AST.h>
+#include <ASTVisitor.h>
+#include <ASTPatternBuilder.h>
+#include <ASTMatcher.h>
+#include <Control.h>
+#include <Scope.h>
+#include <Semantic.h>
+#include <TranslationUnit.h>
+#include <Literals.h>
+#include <Symbols.h>
+#include <Names.h>
+#include <CoreTypes.h>
+#include <CppDocument.h>
+
+#include <QFile>
+#include <QList>
+#include <QCoreApplication>
+#include <QStringList>
+#include <QFileInfo>
+#include <QTime>
+#include <QtDebug>
+
+#include <cstdio>
+#include <cstdlib>
+#include <iostream>
+#include <cxxabi.h>
+
+using namespace CPlusPlus;
+
+class ASTDump: protected ASTVisitor
+{
+public:
+    ASTDump(TranslationUnit *unit)
+        : ASTVisitor(unit) {}
+
+    void operator()(AST *ast) {
+        std::cout << "digraph AST {" << std::endl;
+        accept(ast);
+        std::cout << "}" << std::endl;
+    }
+
+protected:
+    std::string name(AST *ast) const {
+        QByteArray name = abi::__cxa_demangle(typeid(*ast).name(), 0, 0, 0) + 11;
+        name.truncate(name.length() - 3);
+        name = QByteArray::number(_id.value(ast)) + ". " + name;
+        const char *x = spell(ast->firstToken());
+        name += ' ';
+        name += x;
+
+        name.prepend('"');
+        name.append('"');        
+
+        return std::string(name);
+    }
+
+    virtual bool preVisit(AST *ast) {
+        static int count = 1;
+        _id[ast] = count++;
+
+        if (! _stack.isEmpty())
+            std::cout << name(_stack.last()) << " -> " << name(ast) << ";" << std::endl;
+
+        _stack.append(ast);
+
+        return true;
+    }
+
+    virtual void postVisit(AST *ast) {
+        _stack.removeLast();        
+    }
+
+private:
+    QHash<AST *, int> _id;
+    QList<AST *> _stack;
+};
+
+int main(int argc, char *argv[])
+{
+    QCoreApplication app(argc, argv);
+
+    QStringList files = app.arguments();
+    files.removeFirst();
+
+    foreach (const QString &fileName, files) {
+        QFile file(fileName);
+        if (! file.open(QFile::ReadOnly))
+            continue;
+
+        const QByteArray source = file.readAll();
+        file.close();
+
+        Document::Ptr doc = Document::create(fileName);
+        doc->control()->setDiagnosticClient(0);
+        doc->setSource(source);
+        doc->parse();
+
+        ASTDump dump(doc->translationUnit());
+        dump(doc->translationUnit()->ast());
+    }
+
+    return EXIT_SUCCESS;
+}

tests/manual/cplusplus-dump/tests/templ01.cpp

+
+struct QString
+{
+    void append(char ch);
+};
+
+template <typename _Tp> struct QList {
+    const _Tp &at(int index);
+};
+
+struct QStringList: public QList<QString> {};
+
+int main()
+{
+    QStringList l;
+    l.at(0).append('a'); 
+}