Group some commonly passed together values into a struct

6 files changed, 76 insertions, 118 deletions

diff --git a/compiler/rustc_driver/src/lib.rs b/compiler/rustc_driver/src/lib.rs
index ec46fc8999a..feb78cb0984 100644
--- a/compiler/rustc_driver/src/lib.rs
+++ b/compiler/rustc_driver/src/lib.rs
@@ -26,6 +26,7 @@ use rustc_errors::registry::{InvalidErrorCode, Registry};
 use rustc_errors::{ErrorGuaranteed, PResult};
 use rustc_feature::find_gated_cfg;
 use rustc_hir::def_id::LOCAL_CRATE;
+use rustc_interface::interface::CompilerIO;
 use rustc_interface::util::{self, collect_crate_types, get_codegen_backend};
 use rustc_interface::{interface, Queries};
 use rustc_lint::LintStore;
@@ -262,10 +263,8 @@ fn run_compiler(
                     let should_stop = print_crate_info(
                         &***compiler.codegen_backend(),
                         compiler.session(),
-                        None,
-                        compiler.output_dir(),
-                        compiler.output_file(),
-                        compiler.temps_dir(),
+                        false,
+                        compiler.io(),
                     );
 
                     if should_stop == Compilation::Stop {
@@ -288,18 +287,16 @@ fn run_compiler(
 
     interface::run_compiler(config, |compiler| {
         let sess = compiler.session();
-        let should_stop = print_crate_info(
-            &***compiler.codegen_backend(),
-            sess,
-            Some(compiler.input()),
-            compiler.output_dir(),
-            compiler.output_file(),
-            compiler.temps_dir(),
-        )
-        .and_then(|| {
-            list_metadata(sess, &*compiler.codegen_backend().metadata_loader(), compiler.input())
-        })
-        .and_then(|| try_process_rlink(sess, compiler));
+        let should_stop =
+            print_crate_info(&***compiler.codegen_backend(), sess, true, compiler.io())
+                .and_then(|| {
+                    list_metadata(
+                        sess,
+                        &*compiler.codegen_backend().metadata_loader(),
+                        &compiler.io().input,
+                    )
+                })
+                .and_then(|| try_process_rlink(sess, compiler));
 
         if should_stop == Compilation::Stop {
             return sess.compile_status();
@@ -315,22 +312,15 @@ fn run_compiler(
                     queries.global_ctxt()?.enter(|tcx| {
                         pretty::print_after_hir_lowering(
                             tcx,
-                            compiler.input(),
+                            compiler.io(),
                             &*expanded_crate,
                             *ppm,
-                            compiler.output_file().as_deref(),
                         );
                         Ok(())
                     })?;
                 } else {
                     let krate = queries.parse()?.steal();
-                    pretty::print_after_parsing(
-                        sess,
-                        compiler.input(),
-                        &krate,
-                        *ppm,
-                        compiler.output_file().as_deref(),
-                    );
+                    pretty::print_after_parsing(sess, compiler.io(), &krate, *ppm);
                 }
                 trace!("finished pretty-printing");
                 return early_exit();
@@ -380,9 +370,9 @@ fn run_compiler(
                         save::process_crate(
                             tcx,
                             crate_name,
-                            compiler.input(),
+                            &compiler.io().input,
                             None,
-                            DumpHandler::new(compiler.output_dir().as_deref(), crate_name),
+                            DumpHandler::new(compiler.io().output_dir.as_deref(), crate_name),
                         )
                     });
                 }
@@ -556,7 +546,7 @@ fn show_content_with_pager(content: &str) {
 
 pub fn try_process_rlink(sess: &Session, compiler: &interface::Compiler) -> Compilation {
     if sess.opts.unstable_opts.link_only {
-        if let Input::File(file) = compiler.input() {
+        if let Input::File(file) = &compiler.io().input {
             // FIXME: #![crate_type] and #![crate_name] support not implemented yet
             sess.init_crate_types(collect_crate_types(sess, &[]));
             let outputs = compiler.build_output_filenames(sess, &[]);
@@ -623,10 +613,8 @@ pub fn list_metadata(
 fn print_crate_info(
     codegen_backend: &dyn CodegenBackend,
     sess: &Session,
-    input: Option<&Input>,
-    odir: &Option<PathBuf>,
-    ofile: &Option<PathBuf>,
-    temps_dir: &Option<PathBuf>,
+    parse_attrs: bool,
+    io: &CompilerIO,
 ) -> Compilation {
     use rustc_session::config::PrintRequest::*;
     // NativeStaticLibs and LinkArgs are special - printed during linking
@@ -635,18 +623,17 @@ fn print_crate_info(
         return Compilation::Continue;
     }
 
-    let attrs = match input {
-        None => None,
-        Some(input) => {
-            let result = parse_crate_attrs(sess, input);
-            match result {
-                Ok(attrs) => Some(attrs),
-                Err(mut parse_error) => {
-                    parse_error.emit();
-                    return Compilation::Stop;
-                }
+    let attrs = if parse_attrs {
+        let result = parse_crate_attrs(sess, &io.input);
+        match result {
+            Ok(attrs) => Some(attrs),
+            Err(mut parse_error) => {
+                parse_error.emit();
+                return Compilation::Stop;
             }
         }
+    } else {
+        None
     };
     for req in &sess.opts.prints {
         match *req {
@@ -661,14 +648,9 @@ fn print_crate_info(
                 println!("{}", serde_json::to_string_pretty(&sess.target.to_json()).unwrap());
             }
             FileNames | CrateName => {
-                let input = input.unwrap_or_else(|| {
-                    early_error(ErrorOutputType::default(), "no input file provided")
-                });
                 let attrs = attrs.as_ref().unwrap();
-                let t_outputs = rustc_interface::util::build_output_filenames(
-                    input, odir, ofile, temps_dir, attrs, sess,
-                );
-                let id = rustc_session::output::find_crate_name(sess, attrs, input);
+                let t_outputs = rustc_interface::util::build_output_filenames(io, attrs, sess);
+                let id = rustc_session::output::find_crate_name(sess, attrs, &io.input);
                 if *req == PrintRequest::CrateName {
                     println!("{id}");
                     continue;
diff --git a/compiler/rustc_driver/src/pretty.rs b/compiler/rustc_driver/src/pretty.rs
index b2451bc730f..dd24f0bc98f 100644
--- a/compiler/rustc_driver/src/pretty.rs
+++ b/compiler/rustc_driver/src/pretty.rs
@@ -6,6 +6,7 @@ use rustc_ast_pretty::pprust;
 use rustc_errors::ErrorGuaranteed;
 use rustc_hir as hir;
 use rustc_hir_pretty as pprust_hir;
+use rustc_interface::interface::CompilerIO;
 use rustc_middle::hir::map as hir_map;
 use rustc_middle::mir::{write_mir_graphviz, write_mir_pretty};
 use rustc_middle::ty::{self, TyCtxt};
@@ -16,7 +17,7 @@ use rustc_span::FileName;
 
 use std::cell::Cell;
 use std::fmt::Write;
-use std::path::Path;
+use std::path::PathBuf;
 
 pub use self::PpMode::*;
 pub use self::PpSourceMode::*;
@@ -358,7 +359,7 @@ fn get_source(input: &Input, sess: &Session) -> (String, FileName) {
     (src, src_name)
 }
 
-fn write_or_print(out: &str, ofile: Option<&Path>, sess: &Session) {
+fn write_or_print(out: &str, ofile: &Option<PathBuf>, sess: &Session) {
     match ofile {
         None => print!("{out}"),
         Some(p) => {
@@ -372,14 +373,8 @@ fn write_or_print(out: &str, ofile: Option<&Path>, sess: &Session) {
     }
 }
 
-pub fn print_after_parsing(
-    sess: &Session,
-    input: &Input,
-    krate: &ast::Crate,
-    ppm: PpMode,
-    ofile: Option<&Path>,
-) {
-    let (src, src_name) = get_source(input, sess);
+pub fn print_after_parsing(sess: &Session, io: &CompilerIO, krate: &ast::Crate, ppm: PpMode) {
+    let (src, src_name) = get_source(&io.input, sess);
 
     let out = match ppm {
         Source(s) => {
@@ -407,22 +402,21 @@ pub fn print_after_parsing(
         _ => unreachable!(),
     };
 
-    write_or_print(&out, ofile, sess);
+    write_or_print(&out, &io.output_file, sess);
 }
 
 pub fn print_after_hir_lowering<'tcx>(
     tcx: TyCtxt<'tcx>,
-    input: &Input,
+    io: &CompilerIO,
     krate: &ast::Crate,
     ppm: PpMode,
-    ofile: Option<&Path>,
 ) {
     if ppm.needs_analysis() {
-        abort_on_err(print_with_analysis(tcx, ppm, ofile), tcx.sess);
+        abort_on_err(print_with_analysis(tcx, ppm, &io.output_file), tcx.sess);
         return;
     }
 
-    let (src, src_name) = get_source(input, tcx.sess);
+    let (src, src_name) = get_source(&io.input, tcx.sess);
 
     let out = match ppm {
         Source(s) => {
@@ -474,7 +468,7 @@ pub fn print_after_hir_lowering<'tcx>(
         _ => unreachable!(),
     };
 
-    write_or_print(&out, ofile, tcx.sess);
+    write_or_print(&out, &io.output_file, tcx.sess);
 }
 
 // In an ideal world, this would be a public function called by the driver after
@@ -484,7 +478,7 @@ pub fn print_after_hir_lowering<'tcx>(
 fn print_with_analysis(
     tcx: TyCtxt<'_>,
     ppm: PpMode,
-    ofile: Option<&Path>,
+    ofile: &Option<PathBuf>,
 ) -> Result<(), ErrorGuaranteed> {
     tcx.analysis(())?;
     let out = match ppm {
diff --git a/compiler/rustc_interface/src/interface.rs b/compiler/rustc_interface/src/interface.rs
index 22a01db5e75..e3c4f9052ce 100644
--- a/compiler/rustc_interface/src/interface.rs
+++ b/compiler/rustc_interface/src/interface.rs
@@ -35,15 +35,19 @@ pub type Result<T> = result::Result<T, ErrorGuaranteed>;
 pub struct Compiler {
     pub(crate) sess: Lrc<Session>,
     codegen_backend: Lrc<Box<dyn CodegenBackend>>,
-    pub(crate) input: Input,
-    pub(crate) output_dir: Option<PathBuf>,
-    pub(crate) output_file: Option<PathBuf>,
-    pub(crate) temps_dir: Option<PathBuf>,
+    pub(crate) io: CompilerIO,
     pub(crate) register_lints: Option<Box<dyn Fn(&Session, &mut LintStore) + Send + Sync>>,
     pub(crate) override_queries:
         Option<fn(&Session, &mut ty::query::Providers, &mut ty::query::ExternProviders)>,
 }
 
+pub struct CompilerIO {
+    pub input: Input,
+    pub output_dir: Option<PathBuf>,
+    pub output_file: Option<PathBuf>,
+    pub temps_dir: Option<PathBuf>,
+}
+
 impl Compiler {
     pub fn session(&self) -> &Lrc<Session> {
         &self.sess
@@ -51,17 +55,8 @@ impl Compiler {
     pub fn codegen_backend(&self) -> &Lrc<Box<dyn CodegenBackend>> {
         &self.codegen_backend
     }
-    pub fn input(&self) -> &Input {
-        &self.input
-    }
-    pub fn output_dir(&self) -> &Option<PathBuf> {
-        &self.output_dir
-    }
-    pub fn output_file(&self) -> &Option<PathBuf> {
-        &self.output_file
-    }
-    pub fn temps_dir(&self) -> &Option<PathBuf> {
-        &self.temps_dir
+    pub fn io(&self) -> &CompilerIO {
+        &self.io
     }
     pub fn register_lints(&self) -> &Option<Box<dyn Fn(&Session, &mut LintStore) + Send + Sync>> {
         &self.register_lints
@@ -71,14 +66,7 @@ impl Compiler {
         sess: &Session,
         attrs: &[ast::Attribute],
     ) -> OutputFilenames {
-        util::build_output_filenames(
-            &self.input,
-            &self.output_dir,
-            &self.output_file,
-            &self.temps_dir,
-            attrs,
-            sess,
-        )
+        util::build_output_filenames(&self.io, attrs, sess)
     }
 }
 
@@ -305,10 +293,12 @@ pub fn run_compiler<R: Send>(config: Config, f: impl FnOnce(&Compiler) -> R + Se
             let compiler = Compiler {
                 sess: Lrc::new(sess),
                 codegen_backend: Lrc::new(codegen_backend),
-                input: config.input,
-                output_dir: config.output_dir,
-                output_file: config.output_file,
-                temps_dir,
+                io: CompilerIO {
+                    input: config.input,
+                    output_dir: config.output_dir,
+                    output_file: config.output_file,
+                    temps_dir,
+                },
                 register_lints: config.register_lints,
                 override_queries: config.override_queries,
             };
diff --git a/compiler/rustc_interface/src/passes.rs b/compiler/rustc_interface/src/passes.rs
index bba0a50a93f..8545cbefa26 100644
--- a/compiler/rustc_interface/src/passes.rs
+++ b/compiler/rustc_interface/src/passes.rs
@@ -673,20 +673,13 @@ pub fn prepare_outputs(
     let _timer = sess.timer("prepare_outputs");
 
     // FIXME: rustdoc passes &[] instead of &krate.attrs here
-    let outputs = util::build_output_filenames(
-        &compiler.input,
-        &compiler.output_dir,
-        &compiler.output_file,
-        &compiler.temps_dir,
-        &krate.attrs,
-        sess,
-    );
+    let outputs = util::build_output_filenames(&compiler.io, &krate.attrs, sess);
 
     let output_paths =
-        generated_output_paths(sess, &outputs, compiler.output_file.is_some(), crate_name);
+        generated_output_paths(sess, &outputs, compiler.io.output_file.is_some(), crate_name);
 
     // Ensure the source file isn't accidentally overwritten during compilation.
-    if let Some(ref input_path) = compiler.input.opt_path() {
+    if let Some(ref input_path) = compiler.io.input.opt_path() {
         if sess.opts.will_create_output_file() {
             if output_contains_path(&output_paths, input_path) {
                 let reported = sess.emit_err(InputFileWouldBeOverWritten { path: input_path });
@@ -700,7 +693,7 @@ pub fn prepare_outputs(
         }
     }
 
-    if let Some(ref dir) = compiler.temps_dir {
+    if let Some(ref dir) = compiler.io.temps_dir {
         if fs::create_dir_all(dir).is_err() {
             let reported = sess.emit_err(TempsDirError);
             return Err(reported);
@@ -713,7 +706,7 @@ pub fn prepare_outputs(
         && sess.opts.output_types.len() == 1;
 
     if !only_dep_info {
-        if let Some(ref dir) = compiler.output_dir {
+        if let Some(ref dir) = compiler.io.output_dir {
             if fs::create_dir_all(dir).is_err() {
                 let reported = sess.emit_err(OutDirError);
                 return Err(reported);
diff --git a/compiler/rustc_interface/src/queries.rs b/compiler/rustc_interface/src/queries.rs
index 6f791c8893c..32348fd72ed 100644
--- a/compiler/rustc_interface/src/queries.rs
+++ b/compiler/rustc_interface/src/queries.rs
@@ -129,7 +129,7 @@ impl<'tcx> Queries<'tcx> {
 
     pub fn parse(&self) -> Result<QueryResult<'_, ast::Crate>> {
         self.parse.compute(|| {
-            passes::parse(self.session(), &self.compiler.input)
+            passes::parse(self.session(), &self.compiler.io.input)
                 .map_err(|mut parse_error| parse_error.emit())
         })
     }
@@ -165,7 +165,7 @@ impl<'tcx> Queries<'tcx> {
                 let parse_result = self.parse()?;
                 let krate = parse_result.borrow();
                 // parse `#[crate_name]` even if `--crate-name` was passed, to make sure it matches.
-                find_crate_name(self.session(), &krate.attrs, &self.compiler.input)
+                find_crate_name(self.session(), &krate.attrs, &self.compiler.io.input)
             })
         })
     }
diff --git a/compiler/rustc_interface/src/util.rs b/compiler/rustc_interface/src/util.rs
index 02a7756c8d4..f19b03c75eb 100644
--- a/compiler/rustc_interface/src/util.rs
+++ b/compiler/rustc_interface/src/util.rs
@@ -8,7 +8,7 @@ use rustc_parse::validate_attr;
 use rustc_session as session;
 use rustc_session::config::CheckCfg;
 use rustc_session::config::{self, CrateType};
-use rustc_session::config::{ErrorOutputType, Input, OutputFilenames};
+use rustc_session::config::{ErrorOutputType, OutputFilenames};
 use rustc_session::filesearch::sysroot_candidates;
 use rustc_session::lint::{self, BuiltinLintDiagnostics, LintBuffer};
 use rustc_session::parse::CrateConfig;
@@ -25,6 +25,8 @@ use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::OnceLock;
 use std::thread;
 
+use crate::interface::CompilerIO;
+
 /// Function pointer type that constructs a new CodegenBackend.
 pub type MakeBackendFn = fn() -> Box<dyn CodegenBackend>;
 
@@ -487,19 +489,16 @@ pub fn collect_crate_types(session: &Session, attrs: &[ast::Attribute]) -> Vec<C
 }
 
 pub fn build_output_filenames(
-    input: &Input,
-    odir: &Option<PathBuf>,
-    ofile: &Option<PathBuf>,
-    temps_dir: &Option<PathBuf>,
+    io: &CompilerIO,
     attrs: &[ast::Attribute],
     sess: &Session,
 ) -> OutputFilenames {
-    match *ofile {
+    match io.output_file {
         None => {
             // "-" as input file will cause the parser to read from stdin so we
             // have to make up a name
             // We want to toss everything after the final '.'
-            let dirpath = (*odir).as_ref().cloned().unwrap_or_default();
+            let dirpath = io.output_dir.clone().unwrap_or_default();
 
             // If a crate name is present, we use it as the link name
             let stem = sess
@@ -507,13 +506,13 @@ pub fn build_output_filenames(
                 .crate_name
                 .clone()
                 .or_else(|| rustc_attr::find_crate_name(sess, attrs).map(|n| n.to_string()))
-                .unwrap_or_else(|| input.filestem().to_owned());
+                .unwrap_or_else(|| io.input.filestem().to_owned());
 
             OutputFilenames::new(
                 dirpath,
                 stem,
                 None,
-                temps_dir.clone(),
+                io.temps_dir.clone(),
                 sess.opts.cg.extra_filename.clone(),
                 sess.opts.output_types.clone(),
             )
@@ -534,7 +533,7 @@ pub fn build_output_filenames(
                 }
                 Some(out_file.clone())
             };
-            if *odir != None {
+            if io.output_dir != None {
                 sess.warn("ignoring --out-dir flag due to -o flag");
             }
 
@@ -542,7 +541,7 @@ pub fn build_output_filenames(
                 out_file.parent().unwrap_or_else(|| Path::new("")).to_path_buf(),
                 out_file.file_stem().unwrap_or_default().to_str().unwrap().to_string(),
                 ofile,
-                temps_dir.clone(),
+                io.temps_dir.clone(),
                 sess.opts.cg.extra_filename.clone(),
                 sess.opts.output_types.clone(),
             )