Skip until first non empty line for templater

src/Parser/Parsing/Impl/SkipUntilFirstNonEmptyProxy.cpp

@@ -0,0 +1,40 @@
+#include "SkipUntilFirstNonEmptyProxy.h"
+
+SkipUntilFirstNonEmptyProxy::SkipUntilFirstNonEmptyProxy(IParserLineStream* stream)
+    : m_stream(stream),
+      m_had_non_empty(false)
+{
+}
+
+ParserLine SkipUntilFirstNonEmptyProxy::NextLine()
+{
+    auto line = m_stream->NextLine();
+    if (!m_had_non_empty)
+    {
+        while (line.m_line.empty() && !m_stream->Eof())
+            line = m_stream->NextLine();
+        m_had_non_empty = true;
+    }
+
+    return line;
+}
+
+bool SkipUntilFirstNonEmptyProxy::IncludeFile(const std::string& filename)
+{
+    return m_stream->IncludeFile(filename);
+}
+
+void SkipUntilFirstNonEmptyProxy::PopCurrentFile()
+{
+    m_stream->PopCurrentFile();
+}
+
+bool SkipUntilFirstNonEmptyProxy::IsOpen() const
+{
+    return m_stream->IsOpen();
+}
+
+bool SkipUntilFirstNonEmptyProxy::Eof() const
+{
+    return m_stream->Eof();
+}

src/Parser/Parsing/Impl/SkipUntilFirstNonEmptyProxy.h

@@ -0,0 +1,19 @@
+#pragma once
+
+#include "Parsing/IParserLineStream.h"
+
+class SkipUntilFirstNonEmptyProxy final : public IParserLineStream
+{
+public:
+    explicit SkipUntilFirstNonEmptyProxy(IParserLineStream* stream);
+
+    ParserLine NextLine() override;
+    bool IncludeFile(const std::string& filename) override;
+    void PopCurrentFile() override;
+    _NODISCARD bool IsOpen() const override;
+    _NODISCARD bool Eof() const override;
+
+private:
+    IParserLineStream* const m_stream;
+    bool m_had_non_empty;
+};