1 files changed, 124 insertions, 0 deletions
diff --git a/src/qmlls/qtextdocument.cpp b/src/qmlls/qtextdocument.cpp
new file mode 100644
index 0000000000..54e200274e
--- /dev/null
+++ b/src/qmlls/qtextdocument.cpp
@@ -0,0 +1,124 @@
+// Copyright (C) 2021 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+
+#include "qtextdocument_p.h"
+#include "qtextblock_p.h"
+
+namespace Utils {
+
+TextDocument::TextDocument(const QString &text)
+{
+    setPlainText(text);
+}
+
+TextBlock TextDocument::findBlockByNumber(int blockNumber) const
+{
+    return (blockNumber >= 0 && blockNumber < m_blocks.size())
+            ? m_blocks.at(blockNumber).textBlock
+            : TextBlock();
+}
+
+TextBlock TextDocument::findBlockByLineNumber(int lineNumber) const
+{
+    return findBlockByNumber(lineNumber);
+}
+
+QChar TextDocument::characterAt(int pos) const
+{
+    return m_content.at(pos);
+}
+
+int TextDocument::characterCount() const
+{
+    return m_content.size();
+}
+
+TextBlock TextDocument::begin() const
+{
+    return m_blocks.isEmpty() ? TextBlock() : m_blocks.at(0).textBlock;
+}
+
+TextBlock TextDocument::firstBlock() const
+{
+    return begin();
+}
+
+TextBlock TextDocument::lastBlock() const
+{
+    return m_blocks.isEmpty() ? TextBlock() : m_blocks.last().textBlock;
+}
+
+std::optional<int> TextDocument::version() const
+{
+    return m_version;
+}
+
+void TextDocument::setVersion(std::optional<int> v)
+{
+    m_version = v;
+}
+
+QString TextDocument::toPlainText() const
+{
+    return m_content;
+}
+
+void TextDocument::setPlainText(const QString &text)
+{
+    m_content = text;
+    m_blocks.clear();
+
+    const auto appendToBlocks = [this](int blockNumber, int start, int length) {
+        Block block;
+        block.textBlock.setBlockNumber(blockNumber);
+        block.textBlock.setPosition(start);
+        block.textBlock.setDocument(this);
+        block.textBlock.setLength(length);
+        m_blocks.append(block);
+    };
+
+    int blockStart = 0;
+    int blockNumber = -1;
+    while (blockStart < text.size()) {
+        int blockEnd = text.indexOf(u'\n', blockStart) + 1;
+        if (blockEnd == 0)
+            blockEnd = text.size();
+        appendToBlocks(++blockNumber, blockStart, blockEnd - blockStart);
+        blockStart = blockEnd;
+    }
+    // Add an empty block if the text ends with \n. This is required for retrieving
+    // the actual line of the text editor if requested, for example, in findBlockByNumber.
+    // Consider a case with text aa\nbb\n\n. You are on 4th line of the text editor and even
+    // if it is an empty line, we introduce a text block for it to maybe use later.
+    if (text.endsWith(u'\n'))
+        appendToBlocks(++blockNumber, blockStart, 0);
+}
+
+bool TextDocument::isModified() const
+{
+    return m_modified;
+}
+
+void TextDocument::setModified(bool modified)
+{
+    m_modified = modified;
+}
+
+void TextDocument::setUserState(int blockNumber, int state)
+{
+    if (blockNumber >= 0 && blockNumber < m_blocks.size())
+        m_blocks[blockNumber].userState = state;
+}
+
+int TextDocument::userState(int blockNumber) const
+{
+    return (blockNumber >= 0 && blockNumber < m_blocks.size()) ? m_blocks[blockNumber].userState
+                                                                 : -1;
+}
+
+QMutex *TextDocument::mutex() const
+{
+    return &m_mutex;
+}
+
+} // namespace Utils