Rollup merge of rust-lang#5518 - flip1995:less_pre_expansion, r=phansch

Register redundant_field_names and non_expressive_names as early passes

Fixes rust-lang#5356
Fixes rust-lang#5521

We should move all pre_expansion_passes to early_passes, since they were soft deprecated in the rust compiler IIUC.

changelog: none

clippy_lints/src/lib.rs

@@ -343,13 +343,8 @@ mod reexport {
 /// level (i.e `#![cfg_attr(...)]`) will still be expanded even when using a pre-expansion pass.
 ///
 /// Used in `./src/driver.rs`.
-pub fn register_pre_expansion_lints(store: &mut rustc_lint::LintStore, conf: &Conf) {
+pub fn register_pre_expansion_lints(store: &mut rustc_lint::LintStore) {
     store.register_pre_expansion_pass(|| box write::Write::default());
-    store.register_pre_expansion_pass(|| box redundant_field_names::RedundantFieldNames);
-    let single_char_binding_names_threshold = conf.single_char_binding_names_threshold;
-    store.register_pre_expansion_pass(move || box non_expressive_names::NonExpressiveNames {
-        single_char_binding_names_threshold,
-    });
     store.register_pre_expansion_pass(|| box attrs::DeprecatedCfgAttribute);
     store.register_pre_expansion_pass(|| box dbg_macro::DbgMacro);
 }
@@ -1060,6 +1055,11 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
     store.register_late_pass(|| box future_not_send::FutureNotSend);
     store.register_late_pass(|| box utils::internal_lints::CollapsibleCalls);
     store.register_late_pass(|| box if_let_mutex::IfLetMutex);
+    store.register_early_pass(|| box redundant_field_names::RedundantFieldNames);
+    let single_char_binding_names_threshold = conf.single_char_binding_names_threshold;
+    store.register_early_pass(move || box non_expressive_names::NonExpressiveNames {
+        single_char_binding_names_threshold,
+    });
 
     store.register_group(true, "clippy::restriction", Some("clippy_restriction"), vec![
         LintId::of(&arithmetic::FLOAT_ARITHMETIC),

src/driver.rs

@@ -79,7 +79,7 @@ impl rustc_driver::Callbacks for ClippyCallbacks {
 
             let conf = clippy_lints::read_conf(&[], &sess);
             clippy_lints::register_plugins(&mut lint_store, &sess, &conf);
-            clippy_lints::register_pre_expansion_lints(&mut lint_store, &conf);
+            clippy_lints::register_pre_expansion_lints(&mut lint_store);
             clippy_lints::register_renamed(&mut lint_store);
         }));