roberto: Added support for CSS like numeric literals e.g. 10p

1 files changed, 176 insertions, 0 deletions

diff --git a/src/declarative/qml/rewriter/textwriter.cpp b/src/declarative/qml/rewriter/textwriter.cpp
new file mode 100644
index 0000000..d56c9a1
--- /dev/null
+++ b/src/declarative/qml/rewriter/textwriter.cpp
@@ -0,0 +1,176 @@
+#include "textwriter_p.h"
+
+QT_BEGIN_NAMESPACE
+
+using namespace JavaScript;
+
+TextWriter::TextWriter()
+        :string(0), cursor(0)
+{
+}
+
+static bool overlaps(int posA, int lengthA, int posB, int lengthB) {
+    return (posA < posB + lengthB && posA + lengthA > posB + lengthB)
+            || (posA < posB && posA + lengthA > posB);
+}
+
+bool TextWriter::hasOverlap(int pos, int length)
+{
+    {
+        QListIterator<Replace> i(replaceList);
+        while (i.hasNext()) {
+            const Replace &cmd = i.next();
+            if (overlaps(pos, length, cmd.pos, cmd.length))
+                return true;
+        }
+    }
+    {
+        QListIterator<Move> i(moveList);
+        while (i.hasNext()) {
+            const Move &cmd = i.next();
+            if (overlaps(pos, length, cmd.pos, cmd.length))
+                return true;
+        }
+        return false;
+    }
+}
+
+bool TextWriter::hasMoveInto(int pos, int length)
+{
+    QListIterator<Move> i(moveList);
+    while (i.hasNext()) {
+        const Move &cmd = i.next();
+        if (cmd.to >= pos && cmd.to < pos + length)
+            return true;
+    }
+    return false;
+}
+
+void TextWriter::replace(int pos, int length, const QString &replacement)
+{
+    Q_ASSERT(!hasOverlap(pos, length));
+    Q_ASSERT(!hasMoveInto(pos, length));
+
+    Replace cmd;
+    cmd.pos = pos;
+    cmd.length = length;
+    cmd.replacement = replacement;
+    replaceList += cmd;
+}
+
+void TextWriter::move(int pos, int length, int to)
+{
+    Q_ASSERT(!hasOverlap(pos, length));
+
+    Move cmd;
+    cmd.pos = pos;
+    cmd.length = length;
+    cmd.to = to;
+    moveList += cmd;
+}
+
+void TextWriter::doReplace(const Replace &replace)
+{
+    int diff = replace.replacement.size() - replace.length;
+    {
+        QMutableListIterator<Replace> i(replaceList);
+        while (i.hasNext()) {
+            Replace &c = i.next();
+            if (replace.pos < c.pos)
+                c.pos += diff;
+            else if (replace.pos + replace.length < c.pos + c.length)
+                c.length += diff;
+        }
+    }
+    {
+        QMutableListIterator<Move> i(moveList);
+        while (i.hasNext()) {
+            Move &c = i.next();
+            if (replace.pos < c.pos)
+                c.pos += diff;
+            else if (replace.pos + replace.length < c.pos + c.length)
+                c.length += diff;
+
+            if (replace.pos < c.to)
+                c.to += diff;
+        }
+    }
+
+    if (string) {
+        string->replace(replace.pos, replace.length, replace.replacement);
+    } else if (cursor) {
+        cursor->setPosition(replace.pos);
+        cursor->setPosition(replace.pos + replace.length, QTextCursor::KeepAnchor);
+        cursor->insertText(replace.replacement);
+    }
+}
+
+void TextWriter::doMove(const Move &move)
+{
+    QString text;
+    if (string) {
+        text = string->mid(move.pos, move.length);
+    } else if (cursor) {
+        cursor->setPosition(move.pos);
+        cursor->setPosition(move.pos + move.length, QTextCursor::KeepAnchor);
+        text = cursor->selectedText();
+    }
+
+    Replace cut;
+    cut.pos = move.pos;
+    cut.length = move.length;
+    Replace paste;
+    paste.pos = move.to;
+    paste.length = 0;
+    paste.replacement = text;
+
+    replaceList.append(cut);
+    replaceList.append(paste);
+
+    Replace cmd;
+    while (!replaceList.isEmpty()) {
+        cmd = replaceList.first();
+        replaceList.removeFirst();
+        doReplace(cmd);
+    }
+}
+
+void TextWriter::write(QString *s)
+{
+    string = s;
+    write_helper();
+    string = 0;
+}
+
+void TextWriter::write(QTextCursor *textCursor)
+{
+    cursor = textCursor;
+    write_helper();
+    cursor = 0;
+}
+
+void TextWriter::write_helper()
+{
+    if (cursor)
+        cursor->beginEditBlock();
+    {
+        Replace cmd;
+        while (!replaceList.isEmpty()) {
+            cmd = replaceList.first();
+            replaceList.removeFirst();
+            doReplace(cmd);
+        }
+    }
+    {
+        Move cmd;
+        while (!moveList.isEmpty()) {
+            cmd = moveList.first();
+            moveList.removeFirst();
+            doMove(cmd);
+        }
+    }
+    if (cursor)
+        cursor->endEditBlock();
+}
+
+QT_END_NAMESPACE