diff options
Diffstat (limited to 'gcc/rust/ast/rust-ast-full-test.cc')
| -rw-r--r-- | gcc/rust/ast/rust-ast-full-test.cc | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/gcc/rust/ast/rust-ast-full-test.cc b/gcc/rust/ast/rust-ast-full-test.cc index dfd9cdb..6033ce9 100644 --- a/gcc/rust/ast/rust-ast-full-test.cc +++ b/gcc/rust/ast/rust-ast-full-test.cc @@ -17,6 +17,9 @@ 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/>. */ +// FIXME: This does not work on Windows +#include <unistd.h> + #include "rust-ast-full.h" #include "rust-diagnostics.h" #include "rust-ast-visitor.h" @@ -4050,6 +4053,73 @@ Module::add_crate_name (std::vector<std::string> &names) const item->add_crate_name (names); } +static bool +file_exists (const std::string path) +{ + // Simply check if the file exists + // FIXME: This does not work on Windows + return access (path.c_str (), F_OK) != -1; +} + +// FIXME: This function should also check if the module has a `path` outer +// attribute and fetch the path from here in that case, i.e: +// ``` +// #[path="<dir>/<subdir>/<file>.rs"] +// mod <mod_name>; +// ``` +std::string +Module::get_filename () +{ + rust_assert (kind == Module::ModuleKind::UNLOADED); + + // This corresponds to the path of the file 'including' the module. So the + // file that contains the 'mod <file>;' directive + std::string including_fname (outer_filename); + + std::string expected_file_path = module_name + ".rs"; + std::string expected_dir_path = "mod.rs"; + + auto dir_slash_pos = including_fname.rfind (file_separator); + std::string current_directory_name; + + // If we haven't found a file_separator, then we have to look for files in the + // current directory ('.') + if (dir_slash_pos == std::string::npos) + current_directory_name = std::string (".") + file_separator; + else + current_directory_name + = including_fname.substr (0, dir_slash_pos) + file_separator; + + // FIXME: We also have to search for + // <directory>/<including_fname>/<module_name>.rs In rustc, this is done via + // the concept of `DirOwnernship`, which is based on whether or not the + // current file is titled `mod.rs`. + + // First, we search for <directory>/<module_name>.rs + bool file_mod_found + = file_exists (current_directory_name + expected_file_path); + + // Then, search for <directory>/<module_name>/mod.rs + current_directory_name += module_name + file_separator; + bool dir_mod_found = file_exists (current_directory_name + expected_dir_path); + + bool multiple_candidates_found = file_mod_found && dir_mod_found; + bool no_candidates_found = !file_mod_found && !dir_mod_found; + + if (multiple_candidates_found) + rust_error_at (locus, + "two candidates found for module %s: %s.rs and %s%smod.rs", + module_name.c_str (), module_name.c_str (), + module_name.c_str (), file_separator); + + if (no_candidates_found) + rust_error_at (locus, "no candidate found for module %s", + module_name.c_str ()); + + return file_mod_found ? expected_file_path + : current_directory_name + expected_dir_path; +} + void Attribute::parse_attr_to_meta_item () { |