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path: root/src/expand/rustc_diagnostics.cpp
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/*
 * MRustC - Rust Compiler
 * - By John Hodge (Mutabah/thePowersGang)
 *
 * expand/rustc_diagnostics.cpp
 * - 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>

class CExpanderRegisterDiagnostic:
    public ExpandProcMacro
{
    ::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$( TTStreamO(TokenTree()) );
    }
};
class CExpanderDiagnosticUsed:
    public ExpandProcMacro
{
    ::std::unique_ptr<TokenStream> expand(const Span& sp, const AST::Crate& crate, const ::std::string& ident, const TokenTree& tt, AST::Module& mod) override
    {
        return box$( TTStreamO(TokenTree()) );
    }
};
class CExpanderBuildDiagnosticArray:
    public ExpandProcMacro
{
    ::std::unique_ptr<TokenStream> expand(const Span& sp, const AST::Crate& crate, const ::std::string& ident, const TokenTree& tt, AST::Module& mod) override
    {
        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) )) );
    }
};

STATIC_MACRO("__register_diagnostic", CExpanderRegisterDiagnostic)
STATIC_MACRO("__diagnostic_used", CExpanderDiagnosticUsed)
STATIC_MACRO("__build_diagnostic_array", CExpanderBuildDiagnosticArray)