Add ParserMultiInputStream

src/Parser/Parsing/Impl/ParserSingleInputStream.cpp

@@ -0,0 +1,65 @@
+#include "ParserSingleInputStream.h"
+
+#include <sstream>
+
+ParserSingleInputStream::ParserSingleInputStream(std::istream& stream, std::string fileName)
+    : m_stream(stream),
+      m_file_name(std::move(fileName)),
+      m_line_number(1)
+{
+}
+
+ParserLine ParserSingleInputStream::NextLine()
+{
+    std::ostringstream str;
+    auto hasLength = false;
+
+    auto c = m_stream.get();
+    while (c != EOF)
+    {
+        switch (c)
+        {
+        case '\r':
+            c = m_stream.get();
+            if (c == '\n')
+                return ParserLine(m_file_name, m_line_number++, str.str());
+            str << '\r';
+            hasLength = true;
+            continue;
+
+        case '\n':
+            return ParserLine(m_file_name, m_line_number++, str.str());
+
+        default:
+            str << static_cast<char>(c);
+            hasLength = true;
+            break;
+        }
+
+        c = m_stream.get();
+    }
+
+    if (hasLength)
+        return ParserLine(m_file_name, m_line_number, str.str());
+
+    return ParserLine();
+}
+
+bool ParserSingleInputStream::IncludeFile(const std::string& filename)
+{
+    return false;
+}
+
+void ParserSingleInputStream::PopCurrentFile()
+{
+}
+
+bool ParserSingleInputStream::IsOpen() const
+{
+    return !m_stream.eof();
+}
+
+bool ParserSingleInputStream::Eof() const
+{
+    return !m_stream.eof();
+}