Expand - Emit rustc diagnostics arrays (empty)

1 files changed, 35 insertions, 1 deletions

diff --git a/src/expand/rustc_diagnostics.cpp b/src/expand/rustc_diagnostics.cpp
index 2deaa9a3..917a5e4d 100644
--- a/src/expand/rustc_diagnostics.cpp
+++ b/src/expand/rustc_diagnostics.cpp
@@ -6,6 +6,7 @@
  * - Stubbed handling for __register_diagnostic and __diagnostic_used
  */
 #include <synext.hpp>
+#include <parse/parseerror.hpp> // For GET_CHECK_TOK
 #include <parse/common.hpp>  // TokenTree etc
 #include <parse/ttstream.hpp>
 
@@ -30,7 +31,40 @@ class CExpanderBuildDiagnosticArray:
 {
     ::std::unique_ptr<TokenStream> expand(const Span& sp, const AST::Crate& crate, const ::std::string& ident, const TokenTree& tt, AST::Module& mod) override
     {
-        return box$( TTStreamO(TokenTree()) );
+        if( ident != "" )
+            ERROR(sp, E0000, "__build_diagnostic_array! doesn't take an ident");
+        auto lex = TTStream(tt);
+        
+        Token   tok;
+        
+        GET_CHECK_TOK(tok, lex, TOK_IDENT);
+        //auto crate_name = mv$(tok.str());
+        GET_CHECK_TOK(tok, lex, TOK_COMMA);
+        GET_CHECK_TOK(tok, lex, TOK_IDENT);
+        auto item_name = mv$(tok.str());
+        GET_CHECK_TOK(tok, lex, TOK_EOF);
+        
+        ::std::vector<TokenTree>    toks;
+        toks.push_back( TOK_RWORD_STATIC );
+        toks.push_back( Token(TOK_IDENT, item_name) );
+        // : [(&'static str, &'static str); 0]
+        toks.push_back( TOK_COLON );
+        toks.push_back( TOK_SQUARE_OPEN );
+        toks.push_back( TOK_PAREN_OPEN );
+        toks.push_back( TOK_AMP ); toks.push_back( Token(TOK_LIFETIME, "static") ); toks.push_back( Token(TOK_IDENT, "str") );
+        toks.push_back( TOK_COMMA );
+        toks.push_back( TOK_AMP ); toks.push_back( Token(TOK_LIFETIME, "static") ); toks.push_back( Token(TOK_IDENT, "str") );
+        toks.push_back( TOK_PAREN_CLOSE );
+        toks.push_back( TOK_SEMICOLON );
+        toks.push_back( Token(static_cast<uint64_t>(0), CORETYPE_UINT) );
+        toks.push_back( TOK_SQUARE_CLOSE );
+        // = [];
+        toks.push_back( TOK_EQUAL );
+        toks.push_back( TOK_SQUARE_OPEN );
+        toks.push_back( TOK_SQUARE_CLOSE );
+        toks.push_back( TOK_SEMICOLON );
+        
+        return box$( TTStreamO(TokenTree( lex.getHygiene(), mv$(toks) )) );
     }
 };