From bd83f011a8fddb5f21433584a55c2bc2f5f3983c Mon Sep 17 00:00:00 2001
From: John Hodge <tpg@mutabah.net>
Date: Sat, 26 Nov 2016 13:14:59 +0800
Subject: Expand - Emit rustc diagnostics arrays (empty)

---
 src/expand/rustc_diagnostics.cpp | 36 +++++++++++++++++++++++++++++++++++-
 src/parse/tokentree.hpp          |  4 ++++
 2 files changed, 39 insertions(+), 1 deletion(-)

(limited to 'src')

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) )) );
     }
 };
 
diff --git a/src/parse/tokentree.hpp b/src/parse/tokentree.hpp
index 27b85b45..8472ec7f 100644
--- a/src/parse/tokentree.hpp
+++ b/src/parse/tokentree.hpp
@@ -22,6 +22,10 @@ public:
     TokenTree() {}
     TokenTree(TokenTree&&) = default;
     TokenTree& operator=(TokenTree&&) = default;
+    TokenTree(enum eTokenType ty):
+        m_tok( Token(ty) )
+    {
+    }
     TokenTree(Token tok):
         m_tok( ::std::move(tok) )
     {
-- 
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