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Provide more context for rustc +nightly -Zunstable-options on stable

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This commit is contained in:
许杰友 Jieyou Xu (Joe) 2023-06-23 05:56:09 +08:00
parent f42f19b6d3
commit cef812bd95
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GPG key ID: C5FD5D32014FDB47
19 changed files with 509 additions and 471 deletions
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9
compiler/rustc_driver_impl/src/args.rs
View file

@ -3,6 +3,8 @@ use std::fmt;
use std::fs;
use std::io;
use rustc_session::EarlyErrorHandler;
fn arg_expand(arg: String) -> Result<Vec<String>, Error> {
if let Some(path) = arg.strip_prefix('@') {
let file = match fs::read_to_string(path) {
@ -21,15 +23,12 @@ fn arg_expand(arg: String) -> Result<Vec<String>, Error> {
/// **Note:** This function doesn't interpret argument 0 in any special way.
/// If this function is intended to be used with command line arguments,
/// `argv[0]` must be removed prior to calling it manually.
pub fn arg_expand_all(at_args: &[String]) -> Vec<String> {
pub fn arg_expand_all(handler: &EarlyErrorHandler, at_args: &[String]) -> Vec<String> {
let mut args = Vec::new();
for arg in at_args {
match arg_expand(arg.clone()) {
Ok(arg) => args.extend(arg),
Err(err) => rustc_session::early_error(
rustc_session::config::ErrorOutputType::default(),
format!("Failed to load argument file: {err}"),
),
Err(err) => handler.early_error(format!("Failed to load argument file: {err}")),
}
}
args

128
compiler/rustc_driver_impl/src/lib.rs
View file

@ -40,8 +40,7 @@ use rustc_session::config::{
use rustc_session::cstore::MetadataLoader;
use rustc_session::getopts::{self, Matches};
use rustc_session::lint::{Lint, LintId};
use rustc_session::{config, Session};
use rustc_session::{early_error, early_error_no_abort, early_warn};
use rustc_session::{config, EarlyErrorHandler, Session};
use rustc_span::source_map::{FileLoader, FileName};
use rustc_span::symbol::sym;
use rustc_target::json::ToJson;
@ -174,6 +173,7 @@ pub trait Callbacks {
/// continue the compilation afterwards (defaults to `Compilation::Continue`)
fn after_analysis<'tcx>(
&mut self,
_handler: &EarlyErrorHandler,
_compiler: &interface::Compiler,
_queries: &'tcx Queries<'tcx>,
) -> Compilation {
@ -260,6 +260,8 @@ fn run_compiler(
Box<dyn FnOnce(&config::Options) -> Box<dyn CodegenBackend> + Send>,
>,
) -> interface::Result<()> {
let mut early_error_handler = EarlyErrorHandler::new(ErrorOutputType::default());
// Throw away the first argument, the name of the binary.
// In case of at_args being empty, as might be the case by
// passing empty argument array to execve under some platforms,
@ -270,22 +272,22 @@ fn run_compiler(
// the compiler with @empty_file as argv[0] and no more arguments.
let at_args = at_args.get(1..).unwrap_or_default();
let args = args::arg_expand_all(at_args);
let args = args::arg_expand_all(&early_error_handler, at_args);
let Some(matches) = handle_options(&args) else { return Ok(()) };
let Some(matches) = handle_options(&early_error_handler, &args) else { return Ok(()) };
let sopts = config::build_session_options(&matches);
let sopts = config::build_session_options(&mut early_error_handler, &matches);
// Set parallel mode before thread pool creation, which will create `Lock`s.
interface::set_thread_safe_mode(&sopts.unstable_opts);
if let Some(ref code) = matches.opt_str("explain") {
handle_explain(diagnostics_registry(), code, sopts.error_format);
handle_explain(&early_error_handler, diagnostics_registry(), code);
return Ok(());
}
let cfg = interface::parse_cfgspecs(matches.opt_strs("cfg"));
let check_cfg = interface::parse_check_cfg(matches.opt_strs("check-cfg"));
let cfg = interface::parse_cfgspecs(&early_error_handler, matches.opt_strs("cfg"));
let check_cfg = interface::parse_check_cfg(&early_error_handler, matches.opt_strs("check-cfg"));
let (odir, ofile) = make_output(&matches);
let mut config = interface::Config {
opts: sopts,
@ -304,7 +306,7 @@ fn run_compiler(
registry: diagnostics_registry(),
};
match make_input(config.opts.error_format, &matches.free) {
match make_input(&early_error_handler, &matches.free) {
Err(reported) => return Err(reported),
Ok(Some(input)) => {
config.input = input;
@ -314,8 +316,13 @@ fn run_compiler(
Ok(None) => match matches.free.len() {
0 => {
callbacks.config(&mut config);
early_error_handler.abort_if_errors();
interface::run_compiler(config, |compiler| {
let sopts = &compiler.session().opts;
let handler = EarlyErrorHandler::new(sopts.error_format);
if sopts.describe_lints {
let mut lint_store =
rustc_lint::new_lint_store(compiler.session().enable_internal_lints());
@ -329,31 +336,38 @@ fn run_compiler(
describe_lints(compiler.session(), &lint_store, registered_lints);
return;
}
let should_stop =
print_crate_info(&**compiler.codegen_backend(), compiler.session(), false);
let should_stop = print_crate_info(
&handler,
&**compiler.codegen_backend(),
compiler.session(),
false,
);
if should_stop == Compilation::Stop {
return;
}
early_error(sopts.error_format, "no input filename given")
handler.early_error("no input filename given")
});
return Ok(());
}
1 => panic!("make_input should have provided valid inputs"),
_ => early_error(
config.opts.error_format,
format!(
"multiple input filenames provided (first two filenames are `{}` and `{}`)",
matches.free[0], matches.free[1],
),
),
_ => early_error_handler.early_error(format!(
"multiple input filenames provided (first two filenames are `{}` and `{}`)",
matches.free[0], matches.free[1],
)),
},
};
early_error_handler.abort_if_errors();
interface::run_compiler(config, |compiler| {
let sess = compiler.session();
let should_stop = print_crate_info(&**compiler.codegen_backend(), sess, true)
.and_then(|| list_metadata(sess, &*compiler.codegen_backend().metadata_loader()))
let handler = EarlyErrorHandler::new(sess.opts.error_format);
let should_stop = print_crate_info(&handler, &**compiler.codegen_backend(), sess, true)
.and_then(|| {
list_metadata(&handler, sess, &*compiler.codegen_backend().metadata_loader())
})
.and_then(|| try_process_rlink(sess, compiler));
if should_stop == Compilation::Stop {
@ -421,7 +435,7 @@ fn run_compiler(
queries.global_ctxt()?.enter(|tcx| tcx.analysis(()))?;
if callbacks.after_analysis(compiler, queries) == Compilation::Stop {
if callbacks.after_analysis(&handler, compiler, queries) == Compilation::Stop {
return early_exit();
}
@ -475,7 +489,7 @@ fn make_output(matches: &getopts::Matches) -> (Option<PathBuf>, Option<OutFileNa
// Extract input (string or file and optional path) from matches.
fn make_input(
error_format: ErrorOutputType,
handler: &EarlyErrorHandler,
free_matches: &[String],
) -> Result<Option<Input>, ErrorGuaranteed> {
if free_matches.len() == 1 {
@ -485,8 +499,7 @@ fn make_input(
if io::stdin().read_to_string(&mut src).is_err() {
// Immediately stop compilation if there was an issue reading
// the input (for example if the input stream is not UTF-8).
let reported = early_error_no_abort(
error_format,
let reported = handler.early_error_no_abort(
"couldn't read from stdin, as it did not contain valid UTF-8",
);
return Err(reported);
@ -527,7 +540,7 @@ impl Compilation {
}
}
fn handle_explain(registry: Registry, code: &str, output: ErrorOutputType) {
fn handle_explain(handler: &EarlyErrorHandler, registry: Registry, code: &str) {
let upper_cased_code = code.to_ascii_uppercase();
let normalised =
if upper_cased_code.starts_with('E') { upper_cased_code } else { format!("E{code:0>4}") };
@ -557,7 +570,7 @@ fn handle_explain(registry: Registry, code: &str, output: ErrorOutputType) {
}
}
Err(InvalidErrorCode) => {
early_error(output, format!("{code} is not a valid error code"));
handler.early_error(format!("{code} is not a valid error code"));
}
}
}
@ -636,7 +649,11 @@ pub fn try_process_rlink(sess: &Session, compiler: &interface::Compiler) -> Comp
}
}
pub fn list_metadata(sess: &Session, metadata_loader: &dyn MetadataLoader) -> Compilation {
pub fn list_metadata(
handler: &EarlyErrorHandler,
sess: &Session,
metadata_loader: &dyn MetadataLoader,
) -> Compilation {
if sess.opts.unstable_opts.ls {
match sess.io.input {
Input::File(ref ifile) => {
@ -646,7 +663,7 @@ pub fn list_metadata(sess: &Session, metadata_loader: &dyn MetadataLoader) -> Co
safe_println!("{}", String::from_utf8(v).unwrap());
}
Input::Str { .. } => {
early_error(ErrorOutputType::default(), "cannot list metadata for stdin");
handler.early_error("cannot list metadata for stdin");
}
}
return Compilation::Stop;
@ -656,6 +673,7 @@ pub fn list_metadata(sess: &Session, metadata_loader: &dyn MetadataLoader) -> Co
}
fn print_crate_info(
handler: &EarlyErrorHandler,
codegen_backend: &dyn CodegenBackend,
sess: &Session,
parse_attrs: bool,
@ -787,10 +805,8 @@ fn print_crate_info(
.expect("unknown Apple target OS")
)
} else {
early_error(
ErrorOutputType::default(),
"only Apple targets currently support deployment version info",
)
handler
.early_error("only Apple targets currently support deployment version info")
}
}
}
@ -801,11 +817,12 @@ fn print_crate_info(
/// Prints version information
///
/// NOTE: this is a macro to support drivers built at a different time than the main `rustc_driver` crate.
pub macro version($binary: literal, $matches: expr) {
pub macro version($handler: expr, $binary: literal, $matches: expr) {
fn unw(x: Option<&str>) -> &str {
x.unwrap_or("unknown")
}
$crate::version_at_macro_invocation(
$handler,
$binary,
$matches,
unw(option_env!("CFG_VERSION")),
@ -817,6 +834,7 @@ pub macro version($binary: literal, $matches: expr) {
#[doc(hidden)] // use the macro instead
pub fn version_at_macro_invocation(
handler: &EarlyErrorHandler,
binary: &str,
matches: &getopts::Matches,
version: &str,
@ -837,7 +855,7 @@ pub fn version_at_macro_invocation(
let debug_flags = matches.opt_strs("Z");
let backend_name = debug_flags.iter().find_map(|x| x.strip_prefix("codegen-backend="));
get_codegen_backend(&None, backend_name).print_version();
get_codegen_backend(handler, &None, backend_name).print_version();
}
}
@ -1014,7 +1032,7 @@ Available lint options:
/// Show help for flag categories shared between rustdoc and rustc.
///
/// Returns whether a help option was printed.
pub fn describe_flag_categories(matches: &Matches) -> bool {
pub fn describe_flag_categories(handler: &EarlyErrorHandler, matches: &Matches) -> bool {
// Handle the special case of -Wall.
let wall = matches.opt_strs("W");
if wall.iter().any(|x| *x == "all") {
@ -1036,15 +1054,12 @@ pub fn describe_flag_categories(matches: &Matches) -> bool {
}
if cg_flags.iter().any(|x| *x == "no-stack-check") {
early_warn(
ErrorOutputType::default(),
"the --no-stack-check flag is deprecated and does nothing",
);
handler.early_warn("the --no-stack-check flag is deprecated and does nothing");
}
if cg_flags.iter().any(|x| *x == "passes=list") {
let backend_name = debug_flags.iter().find_map(|x| x.strip_prefix("codegen-backend="));
get_codegen_backend(&None, backend_name).print_passes();
get_codegen_backend(handler, &None, backend_name).print_passes();
return true;
}
@ -1101,7 +1116,7 @@ fn print_flag_list<T>(
///
/// So with all that in mind, the comments below have some more detail about the
/// contortions done here to get things to work out correctly.
pub fn handle_options(args: &[String]) -> Option<getopts::Matches> {
pub fn handle_options(handler: &EarlyErrorHandler, args: &[String]) -> Option<getopts::Matches> {
if args.is_empty() {
// user did not write `-v` nor `-Z unstable-options`, so do not
// include that extra information.
@ -1127,7 +1142,7 @@ pub fn handle_options(args: &[String]) -> Option<getopts::Matches> {
.map(|(flag, _)| format!("{e}. Did you mean `-{flag} {opt}`?")),
_ => None,
};
early_error(ErrorOutputType::default(), msg.unwrap_or_else(|| e.to_string()));
handler.early_error(msg.unwrap_or_else(|| e.to_string()));
});
// For all options we just parsed, we check a few aspects:
@ -1141,7 +1156,7 @@ pub fn handle_options(args: &[String]) -> Option<getopts::Matches> {
// we're good to go.
// * Otherwise, if we're an unstable option then we generate an error
// (unstable option being used on stable)
nightly_options::check_nightly_options(&matches, &config::rustc_optgroups());
nightly_options::check_nightly_options(handler, &matches, &config::rustc_optgroups());
if matches.opt_present("h") || matches.opt_present("help") {
// Only show unstable options in --help if we accept unstable options.
@ -1151,12 +1166,12 @@ pub fn handle_options(args: &[String]) -> Option<getopts::Matches> {
return None;
}
if describe_flag_categories(&matches) {
if describe_flag_categories(handler, &matches) {
return None;
}
if matches.opt_present("version") {
version!("rustc", &matches);
version!(handler, "rustc", &matches);
return None;
}
@ -1276,7 +1291,8 @@ pub fn install_ice_hook(bug_report_url: &'static str, extra_info: fn(&Handler))
if let Some(msg) = info.payload().downcast_ref::<String>() {
if msg.starts_with("failed printing to stdout: ") && msg.ends_with("(os error 232)") {
// the error code is already going to be reported when the panic unwinds up the stack
let _ = early_error_no_abort(ErrorOutputType::default(), msg.clone());
let handler = EarlyErrorHandler::new(ErrorOutputType::default());
let _ = handler.early_error_no_abort(msg.clone());
return;
}
};
@ -1359,16 +1375,16 @@ pub fn report_ice(info: &panic::PanicInfo<'_>, bug_report_url: &str, extra_info:
/// This allows tools to enable rust logging without having to magically match rustc's
/// tracing crate version.
pub fn init_rustc_env_logger() {
init_env_logger("RUSTC_LOG");
pub fn init_rustc_env_logger(handler: &EarlyErrorHandler) {
init_env_logger(handler, "RUSTC_LOG");
}
/// This allows tools to enable rust logging without having to magically match rustc's
/// tracing crate version. In contrast to `init_rustc_env_logger` it allows you to choose an env var
/// other than `RUSTC_LOG`.
pub fn init_env_logger(env: &str) {
pub fn init_env_logger(handler: &EarlyErrorHandler, env: &str) {
if let Err(error) = rustc_log::init_env_logger(env) {
early_error(ErrorOutputType::default(), error.to_string());
handler.early_error(error.to_string());
}
}
@ -1424,7 +1440,10 @@ mod signal_handler {
pub fn main() -> ! {
let start_time = Instant::now();
let start_rss = get_resident_set_size();
init_rustc_env_logger();
let handler = EarlyErrorHandler::new(ErrorOutputType::default());
init_rustc_env_logger(&handler);
signal_handler::install();
let mut callbacks = TimePassesCallbacks::default();
install_ice_hook(DEFAULT_BUG_REPORT_URL, |_| ());
@ -1433,10 +1452,7 @@ pub fn main() -> ! {
.enumerate()
.map(|(i, arg)| {
arg.into_string().unwrap_or_else(|arg| {
early_error(
ErrorOutputType::default(),
format!("argument {i} is not valid Unicode: {arg:?}"),
)
handler.early_error(format!("argument {i} is not valid Unicode: {arg:?}"))
})
})
.collect::<Vec<_>>();