reorganize AST

turn else, for(), defineTest() and defineReplace() into own node
types instead of treating them as magic conditionals/functions.
on top of that, introduce a proper branching node type, so finding
the alternative code paths can be moved into the parser instead of
burdening the evaluator with it.

src/shared/proparser/profileevaluator.h

@@ -51,8 +51,8 @@ class ProFileEvaluator
 
 public:
     struct FunctionDefs {
-        QHash<QString, ProBlock *> testFunctions;
-        QHash<QString, ProBlock *> replaceFunctions;
+        QHash<QString, ProFunctionDef *> testFunctions;
+        QHash<QString, ProFunctionDef *> replaceFunctions;
     };
 
     enum TemplateType {

src/shared/proparser/proitems.cpp

@@ -33,37 +33,55 @@
 
 QT_BEGIN_NAMESPACE
 
-ProBlock::ProBlock()
-    : ProItem(BlockKind)
+void ProItem::disposeItems(ProItem *nitm)
 {
-    m_proitems = 0;
-    m_blockKind = 0;
-    m_refCount = 1;
-}
-
-ProBlock::~ProBlock()
-{
-    for (ProItem *itm, *nitm = m_proitems; (itm = nitm); ) {
-        nitm = itm->m_next;
+    for (ProItem *itm; (itm = nitm); ) {
+        nitm = itm->next();
         switch (itm->kind()) {
-        case BlockKind: static_cast<ProBlock *>(itm)->deref(); break;
-        case ConditionKind: delete static_cast<ProCondition *>(itm); break;
-        case OperatorKind: delete static_cast<ProOperator *>(itm); break;
-        case VariableKind: delete static_cast<ProVariable *>(itm); break;
+        case ProItem::ConditionKind: delete static_cast<ProCondition *>(itm); break;
+        case ProItem::VariableKind: delete static_cast<ProVariable *>(itm); break;
+        case ProItem::BranchKind: delete static_cast<ProBranch *>(itm); break;
+        case ProItem::LoopKind: delete static_cast<ProLoop *>(itm); break;
+        case ProItem::FunctionDefKind: static_cast<ProFunctionDef *>(itm)->deref(); break;
+        case ProItem::OpNotKind:
+        case ProItem::OpAndKind:
+        case ProItem::OpOrKind:
+            delete itm;
+            break;
         }
     }
 }
 
-ProFile::ProFile(const QString &fileName)
-    : ProBlock()
+ProBranch::~ProBranch()
 {
-    setBlockKind(ProBlock::ProFileKind);
-    m_fileName = fileName;
+    disposeItems(m_thenItems);
+    disposeItems(m_elseItems);
+}
 
+ProLoop::~ProLoop()
+{
+    disposeItems(m_proitems);
+}
+
+ProFunctionDef::~ProFunctionDef()
+{
+    disposeItems(m_proitems);
+}
+
+ProFile::ProFile(const QString &fileName)
+    : m_proitems(0),
+      m_refCount(1),
+      m_fileName(fileName)
+{
     int nameOff = fileName.lastIndexOf(QLatin1Char('/'));
     m_displayFileName = QString(fileName.constData() + nameOff + 1,
                                 fileName.length() - nameOff - 1);
     m_directoryName = QString(fileName.constData(), nameOff);
 }
 
+ProFile::~ProFile()
+{
+    ProItem::disposeItems(m_proitems);
+}
+
 QT_END_NAMESPACE

src/shared/proparser/proitems.h

@@ -40,7 +40,7 @@ typedef QAtomicInt ProItemRefCount;
 #else
 class ProItemRefCount {
 public:
-    ProItemRefCount() : m_cnt(0) {}
+    ProItemRefCount(int cnt = 0) : m_cnt(cnt) {}
     bool ref() { return ++m_cnt != 0; }
     bool deref() { return --m_cnt != 0; }
     ProItemRefCount &operator=(int value) { m_cnt = value; return *this; }
@@ -54,9 +54,13 @@ class ProItem
 public:
     enum ProItemKind {
         ConditionKind,
-        OperatorKind,
+        OpNotKind,
+        OpAndKind,
+        OpOrKind,
         VariableKind,
-        BlockKind
+        BranchKind,
+        LoopKind,
+        FunctionDefKind
     };
 
     enum ProItemReturn {
@@ -64,8 +68,6 @@ public:
         ReturnTrue,
         ReturnBreak,
         ReturnNext,
-        ReturnLoop,
-        ReturnSkip,
         ReturnReturn
    };
 
@@ -79,43 +81,12 @@ public:
     ProItem *next() const { return m_next; }
     ProItem **nextRef() { return &m_next; }
 
+    static void disposeItems(ProItem *nitm);
+
 private:
     ProItem *m_next;
     ProItemKind m_kind;
     int m_lineNumber;
-
-    friend class ProBlock; // C++ is braindead ...
-};
-
-class ProBlock : public ProItem
-{
-public:
-    enum ProBlockKind {
-        NormalKind          = 0x00,
-        ScopeKind           = 0x01,
-        ScopeContentsKind   = 0x02,
-        ProFileKind         = 0x08,
-        FunctionBodyKind    = 0x10,
-        SingleLine          = 0x80
-    };
-
-    ProBlock();
-    ~ProBlock();
-
-    void setBlockKind(int blockKind) { m_blockKind = blockKind; }
-    int blockKind() const { return m_blockKind; }
-
-    ProItem *items() const { return m_proitems; }
-    ProItem **itemsRef() { return &m_proitems; }
-
-    void ref() { m_refCount.ref(); }
-    void deref() { if (!m_refCount.deref()) delete this; }
-
-private:
-    ProItem *m_proitems;
-    int m_blockKind;
-    friend class ProFile; // for the pseudo-virtual d'tor
-    ProItemRefCount m_refCount;
 };
 
 class ProVariable : public ProItem
@@ -154,35 +125,82 @@ private:
     QString m_text;
 };
 
-class ProOperator : public ProItem
+class ProBranch : public ProItem
 {
 public:
-    enum OperatorKind {
-        OrOperator      = 1,
-        NotOperator     = 2
-    };
+    ProBranch() : ProItem(BranchKind) {}
+    ~ProBranch();
 
-    explicit ProOperator(OperatorKind operatorKind) : ProItem(ProItem::OperatorKind), m_operatorKind(operatorKind) {}
-    void setOperatorKind(OperatorKind operatorKind) { m_operatorKind = operatorKind; }
-    OperatorKind operatorKind() const { return m_operatorKind; }
+    ProItem *thenItems() const { return m_thenItems; }
+    ProItem **thenItemsRef() { return &m_thenItems; }
+    ProItem *elseItems() const { return m_elseItems; }
+    ProItem **elseItemsRef() { return &m_elseItems; }
 
 private:
-    OperatorKind m_operatorKind;
+    ProItem *m_thenItems;
+    ProItem *m_elseItems;
 };
 
-class ProFile : public ProBlock
+class ProLoop : public ProItem
+{
+public:
+    ProLoop(const QString &var, const QString &expr)
+        : ProItem(LoopKind), m_variable(var), m_expression(expr) {}
+    ~ProLoop();
+
+    QString variable() const { return m_variable; }
+    QString expression() const { return m_expression; }
+    ProItem *items() const { return m_proitems; }
+    ProItem **itemsRef() { return &m_proitems; }
+
+private:
+    QString m_variable;
+    QString m_expression;
+    ProItem *m_proitems;
+};
+
+class ProFunctionDef : public ProItem
+{
+public:
+    enum FunctionType { TestFunction, ReplaceFunction };
+
+    ProFunctionDef(const QString &name, FunctionType type)
+        : ProItem(FunctionDefKind), m_name(name), m_type(type), m_refCount(1) {}
+    ~ProFunctionDef();
+
+    QString name() const { return m_name; }
+    FunctionType type() const { return m_type; }
+    ProItem *items() const { return m_proitems; }
+    ProItem **itemsRef() { return &m_proitems; }
+
+    void ref() { m_refCount.ref(); }
+    void deref() { if (!m_refCount.deref()) delete this; }
+
+private:
+    QString m_name;
+    FunctionType m_type;
+    ProItemRefCount m_refCount;
+    ProItem *m_proitems;
+};
+
+class ProFile
 {
 public:
     explicit ProFile(const QString &fileName);
+    ~ProFile();
 
     QString displayFileName() const { return m_displayFileName; }
     QString fileName() const { return m_fileName; }
     QString directoryName() const { return m_directoryName; }
+    ProItem *items() const { return m_proitems; }
+    ProItem **itemsRef() { return &m_proitems; }
 
-    // d'tor is not virtual
+    void ref() { m_refCount.ref(); }
     void deref() { if (!m_refCount.deref()) delete this; }
 
 private:
+    ProItem *m_proitems;
+    ProItemRefCount m_refCount;
     QString m_fileName;
     QString m_displayFileName;
     QString m_directoryName;

src/shared/proparser/prowriter.cpp

@@ -84,12 +84,13 @@ void ProWriter::addFiles(ProFile *profile, QStringList *lines,
     *lines << added;
 }
 
-static void findProVariables(ProBlock *block, const QStringList &vars,
+static void findProVariables(ProItem *item, const QStringList &vars,
                              QList<ProVariable *> *proVars)
 {
-    for (ProItem *item = block->items(); item; item = item->next()) {
-        if (item->kind() == ProItem::BlockKind) {
-            findProVariables(static_cast<ProBlock*>(item), vars, proVars);
+    for (; item; item = item->next()) {
+        if (item->kind() == ProItem::BranchKind) {
+            findProVariables(static_cast<ProBranch*>(item)->thenItems(), vars, proVars);
+            findProVariables(static_cast<ProBranch*>(item)->elseItems(), vars, proVars);
         } else if (item->kind() == ProItem::VariableKind) {
             ProVariable *proVar = static_cast<ProVariable*>(item);
             if (vars.contains(proVar->variable()))
@@ -105,7 +106,7 @@ QStringList ProWriter::removeFiles(ProFile *profile, QStringList *lines,
     QStringList notChanged = filePaths;
 
     QList<ProVariable *> proVars;
-    findProVariables(profile, vars, &proVars);
+    findProVariables(profile->items(), vars, &proVars);
 
     // This is a tad stupid - basically, it can remove only entries which
     // the above code added.