gcc/rust/expand/rust-macro-invoc-lexer.cc

   1 #include "rust-macro-invoc-lexer.h"
   2
   3 namespace Rust {
   4
   5 const_TokenPtr
   6 MacroInvocLexer::peek_token (int n)
   7 {
   8   if ((offs + n) >= token_stream.size ())
   9     return Token::make (END_OF_FILE, Location ());
  10
  11   return token_stream.at (offs + n)->get_tok_ptr ();
  12 }
  13
  14 // Advances current token to n + 1 tokens ahead of current position.
  15 void
  16 MacroInvocLexer::skip_token (int n)
  17 {
  18   offs += (n + 1);
  19 }
  20
  21 void
  22 MacroInvocLexer::split_current_token (TokenId new_left __attribute__ ((unused)),
  23                                       TokenId new_right
  24                                       __attribute__ ((unused)))
  25 {
  26   // FIXME
  27   gcc_unreachable ();
  28 }
  29
  30 std::vector<std::unique_ptr<AST::Token>>
  31 MacroInvocLexer::get_token_slice (size_t start_idx, size_t end_idx) const
  32 {
  33   std::vector<std::unique_ptr<AST::Token>> slice;
  34
  35   rust_assert (end_idx < token_stream.size ());
  36
  37   for (size_t i = start_idx; i < end_idx; i++)
  38     slice.emplace_back (token_stream[i]->clone_token ());
  39
  40   return slice;
  41 }
  42
  43 } // namespace Rust