Rough span support

1 files changed, 56 insertions, 0 deletions

diff --git a/src/include/span.hpp b/src/include/span.hpp
new file mode 100644
index 00000000..c8c61627
--- /dev/null
+++ b/src/include/span.hpp
@@ -0,0 +1,56 @@
+/*
+ * MRustC - Rust Compiler
+ * - By John Hodge (Mutabah/thePowersGang)
+ *
+ * include/span.hpp
+ * - Spans and error handling
+ */
+
+#pragma once
+
+enum ErrorType
+{
+    E0000,
+};
+enum WarningType
+{
+    W0000,
+};
+
+struct ProtoSpan
+{
+    ::std::string   filename;
+    
+    unsigned int start_line;
+    unsigned int start_ofs;
+};
+struct Span
+{
+    ::std::string   filename;
+    
+    unsigned int start_line;
+    unsigned int start_ofs;
+    unsigned int end_line;
+    unsigned int end_ofs;
+    
+    Span(::std::string filename, unsigned int start_line, unsigned int start_ofs,  unsigned int end_line, unsigned int end_ofs):
+        filename(filename),
+        start_line(start_line),
+        start_ofs(start_ofs),
+        end_line(end_line),
+        end_ofs(end_ofs)
+    {}
+    Span():
+        filename(""),
+        start_line(0), start_ofs(0),
+        end_line(0), end_ofs(0)
+    {}
+    
+    void bug(::std::function<void(::std::ostream&)> msg) const;
+    void error(ErrorType tag, ::std::function<void(::std::ostream&)> msg) const;
+    void warning(WarningType tag, ::std::function<void(::std::ostream&)> msg) const;
+    void note(::std::function<void(::std::ostream&)> msg) const;
+};
+
+#define ERROR(span, code, msg)  do { (span).error(code, [](::std::ostream& os) { os << msg; }); throw ::std::runtime_error("Error fell through" #code); } while(0)
+