Rework Paragraph parsing error handling. Add single paragraph functions

1 files changed, 45 insertions, 0 deletions

diff --git a/toolsrc/src/paragraph_parse_result.cpp b/toolsrc/src/paragraph_parse_result.cpp
new file mode 100644
index 000000000..4715f7a16
--- /dev/null
+++ b/toolsrc/src/paragraph_parse_result.cpp
@@ -0,0 +1,45 @@
+#include "pch.h"
+#include "vcpkg_Checks.h"
+#include "paragraph_parse_result.h"
+
+namespace vcpkg
+{
+    const char* paragraph_parse_result_category_impl::name() const noexcept
+    {
+        return "paragraph_parse_result";
+    }
+
+    std::string paragraph_parse_result_category_impl::message(int ev) const noexcept
+    {
+        switch (static_cast<paragraph_parse_result>(ev))
+        {
+            case paragraph_parse_result::SUCCESS:
+                return "OK";
+            case paragraph_parse_result::EXPECTED_ONE_PARAGRAPH:
+                return "There should be exactly one paragraph";
+            default:
+                Checks::unreachable(VCPKG_LINE_INFO);
+        }
+    }
+
+    const std::error_category& paragraph_parse_result_category()
+    {
+        static paragraph_parse_result_category_impl instance;
+        return instance;
+    }
+
+    std::error_code make_error_code(paragraph_parse_result e)
+    {
+        return std::error_code(static_cast<int>(e), paragraph_parse_result_category());
+    }
+
+    paragraph_parse_result to_paragraph_parse_result(int i)
+    {
+        return static_cast<paragraph_parse_result>(i);
+    }
+
+    paragraph_parse_result to_paragraph_parse_result(std::error_code ec)
+    {
+        return to_paragraph_parse_result(ec.value());
+    }
+}