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// Copyright (C) 2020-2024 Free Software Foundation, Inc.
// This file is part of GCC.
// GCC is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 3, or (at your option) any later
// version.
// GCC is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
// You should have received a copy of the GNU General Public License
// along with GCC; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
#include "rust-proc-macro-invoc-lexer.h"
#include "rust-token.h"
namespace Rust {
const_TokenPtr
ProcMacroInvocLexer::peek_token (int n)
{
if ((offs + n) >= token_stream.size ())
return Token::make (END_OF_FILE, UNDEF_LOCATION);
return token_stream.at (offs + n);
}
void
ProcMacroInvocLexer::split_current_token (TokenId new_left, TokenId new_right)
{
auto ¤t_token = token_stream.at (offs);
auto current_pos = token_stream.begin () + offs;
auto l_tok = Token::make (new_left, current_token->get_locus ());
auto r_tok = Token::make (new_right, current_token->get_locus ());
token_stream.erase (current_pos);
// `insert` inserts before the specified position, so we insert the right one
// then the left
token_stream.insert (current_pos, l_tok);
token_stream.insert (current_pos, r_tok);
}
void
ProcMacroInvocLexer::split_current_token (std::vector<TokenPtr> new_tokens)
{
rust_assert (new_tokens.size () > 0);
auto current_pos = token_stream.begin () + offs;
token_stream.erase (current_pos);
for (size_t i = 1; i < new_tokens.size (); i++)
{
token_stream.insert (current_pos + i, new_tokens[i]);
}
}
} // namespace Rust
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