rustc_lint: Remove some redundant fields from EarlyContext

Use consistent function parameter order for early context construction and early linting
Rename some functions to make it clear that they do not necessarily work on the whole crate

compiler/rustc_lint/src/context.rs

@@ -553,20 +553,9 @@ pub struct LateContext<'tcx> {
     pub only_module: bool,
 }
 
-/// Context for lint checking of the AST, after expansion, before lowering to
-/// HIR.
+/// Context for lint checking of the AST, after expansion, before lowering to HIR.
 pub struct EarlyContext<'a> {
-    /// Type context we're checking in.
-    pub sess: &'a Session,
-
-    /// The crate being checked.
-    pub krate: &'a ast::Crate,
-
     pub builder: LintLevelsBuilder<'a>,
-
-    /// The store of registered lints and the lint levels.
-    pub lint_store: &'a LintStore,
-
     pub buffered: LintBuffer,
 }
 
@@ -801,18 +790,14 @@ pub trait LintContext: Sized {
 }
 
 impl<'a> EarlyContext<'a> {
-    pub fn new(
+    pub(crate) fn new(
         sess: &'a Session,
+        warn_about_weird_lints: bool,
         lint_store: &'a LintStore,
-        krate: &'a ast::Crate,
         crate_attrs: &'a [ast::Attribute],
         buffered: LintBuffer,
-        warn_about_weird_lints: bool,
     ) -> EarlyContext<'a> {
         EarlyContext {
-            sess,
-            krate,
-            lint_store,
             builder: LintLevelsBuilder::new(sess, warn_about_weird_lints, lint_store, crate_attrs),
             buffered,
         }
@@ -851,11 +836,11 @@ impl LintContext for EarlyContext<'_> {
 
     /// Gets the overall compiler `Session` object.
     fn sess(&self) -> &Session {
-        &self.sess
+        &self.builder.sess()
     }
 
     fn lints(&self) -> &LintStore {
-        &*self.lint_store
+        self.builder.lint_store()
     }
 
     fn lookup<S: Into<MultiSpan>>(