Rename elna::source to elna:boot

boot/driver.cc

@@ -0,0 +1,77 @@
+// This Source Code Form is subject to the terms of the Mozilla Public License
+// v. 2.0. If a copy of the MPL was not distributed with this file, You can
+// obtain one at http://mozilla.org/MPL/2.0/.
+#include "elna/boot/driver.h"
+
+namespace elna
+{
+namespace boot
+{
+    position make_position(const yy::location& location)
+    {
+        return position{
+            static_cast<std::size_t>(location.begin.line),
+            static_cast<std::size_t>(location.begin.column)
+        };
+    }
+
+    syntax_error::syntax_error(const std::string& message,
+            const char *input_file, const yy::location& location)
+        : error(input_file, make_position(location)), message(message)
+    {
+    }
+
+    std::string syntax_error::what() const
+    {
+        return message;
+    }
+
+    driver::driver(const char *input_file)
+        : input_file(input_file)
+    {
+    }
+
+    void driver::error(const yy::location& loc, const std::string& message)
+    {
+        m_errors.emplace_back(std::make_unique<boot::syntax_error>(message, input_file, loc));
+    }
+
+    const std::list<std::unique_ptr<struct error>>& driver::errors() const noexcept
+    {
+        return m_errors;
+    }
+
+    std::optional<char> escape_char(char escape)
+    {
+        switch (escape)
+        {
+        case 'n':
+            return std::make_optional<char>('\n');
+        case 'a':
+            return std::make_optional<char>('\a');
+        case 'b':
+            return std::make_optional<char>('\b');
+        case 't':
+            return std::make_optional<char>('\t');
+        case 'f':
+            return std::make_optional<char>('\f');
+        case 'r':
+            return std::make_optional<char>('\r');
+        case 'v':
+            return std::make_optional<char>('\v');
+        case '\\':
+            return std::make_optional<char>('\\');
+        case '\'':
+            return std::make_optional<char>('\'');
+        case '"':
+            return std::make_optional<char>('"');
+        case '?':
+            return std::make_optional<char>('\?');
+        case '0':
+            return std::make_optional<char>('\0');
+        default:
+            return std::nullopt;
+        }
+    }
+}
+}