Remove NodeId from hir::Block

src/librustc/hir/lowering.rs

@@ -2816,10 +2816,9 @@ impl<'a> LoweringContext<'a> {
             }
         }
 
-        let LoweredNodeId { node_id, hir_id } = self.lower_node_id(b.id);
+        let LoweredNodeId { node_id: _, hir_id } = self.lower_node_id(b.id);
 
         P(hir::Block {
-            id: node_id,
             hir_id,
             stmts: stmts.into(),
             expr,
@@ -3900,11 +3899,10 @@ impl<'a> LoweringContext<'a> {
                             // Wrap the `if let` expr in a block.
                             let span = els.span;
                             let els = P(self.lower_expr(els));
-                            let LoweredNodeId { node_id, hir_id } = self.next_id();
+                            let LoweredNodeId { node_id: _, hir_id } = self.next_id();
                             let blk = P(hir::Block {
                                 stmts: hir_vec![],
                                 expr: Some(els),
-                                id: node_id,
                                 hir_id,
                                 rules: hir::DefaultBlock,
                                 span,
@@ -4978,12 +4976,11 @@ impl<'a> LoweringContext<'a> {
         stmts: hir::HirVec<hir::Stmt>,
         expr: Option<P<hir::Expr>>,
     ) -> hir::Block {
-        let LoweredNodeId { node_id, hir_id } = self.next_id();
+        let LoweredNodeId { node_id: _, hir_id } = self.next_id();
 
         hir::Block {
             stmts,
             expr,
-            id: node_id,
             hir_id,
             rules: hir::DefaultBlock,
             span,

src/librustc/hir/mod.rs

@@ -112,6 +112,12 @@ impl serialize::UseSpecializedDecodable for HirId {
     }
 }
 
+impl fmt::Display for HirId {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "{:?}", self)
+    }
+}
+
 // hack to ensure that we don't try to access the private parts of `ItemLocalId` in this module
 mod item_local_id_inner {
     use rustc_data_structures::indexed_vec::Idx;
@@ -822,7 +828,6 @@ pub struct Block {
     /// An expression at the end of the block
     /// without a semicolon, if any.
     pub expr: Option<P<Expr>>,
-    pub id: NodeId,
     pub hir_id: HirId,
     /// Distinguishes between `unsafe { ... }` and `{ ... }`.
     pub rules: BlockCheckMode,

src/librustc/ich/impls_hir.rs

@@ -421,7 +421,6 @@ impl_stable_hash_for!(struct hir::MacroDef {
 impl_stable_hash_for!(struct hir::Block {
     stmts,
     expr,
-    id -> _,
     hir_id -> _,
     rules,
     span,

src/librustc/middle/expr_use_visitor.rs

@@ -629,7 +629,7 @@ impl<'a, 'gcx, 'tcx> ExprUseVisitor<'a, 'gcx, 'tcx> {
     /// Indicates that the value of `blk` will be consumed, meaning either copied or moved
     /// depending on its type.
     fn walk_block(&mut self, blk: &hir::Block) {
-        debug!("walk_block(blk.id={})", blk.id);
+        debug!("walk_block(blk.hir_id={})", blk.hir_id);
 
         for stmt in &blk.stmts {
             self.walk_stmt(stmt);

src/librustc/middle/liveness.rs

@@ -950,7 +950,8 @@ impl<'a, 'tcx> Liveness<'a, 'tcx> {
     fn propagate_through_block(&mut self, blk: &hir::Block, succ: LiveNode)
                                -> LiveNode {
         if blk.targeted_by_break {
-            self.break_ln.insert(blk.id, succ);
+            let node_id = self.ir.tcx.hir().hir_to_node_id(blk.hir_id);
+            self.break_ln.insert(node_id, succ);
         }
         let succ = self.propagate_through_opt_expr(blk.expr.as_ref().map(|e| &**e), succ);
         blk.stmts.iter().rev().fold(succ, |succ, stmt| {
@@ -1386,7 +1387,7 @@ impl<'a, 'tcx> Liveness<'a, 'tcx> {
             }
         }
         debug!("propagate_through_loop: using id for loop body {} {}",
-               expr.id, self.ir.tcx.hir().node_to_pretty_string(body.id));
+               expr.id, self.ir.tcx.hir().hir_to_pretty_string(body.hir_id));
 
 
         self.break_ln.insert(expr.id, succ);

src/librustc/middle/region.rs

@@ -745,7 +745,7 @@ fn record_var_lifetime(visitor: &mut RegionResolutionVisitor<'_, '_>,
 }
 
 fn resolve_block<'a, 'tcx>(visitor: &mut RegionResolutionVisitor<'a, 'tcx>, blk: &'tcx hir::Block) {
-    debug!("resolve_block(blk.id={:?})", blk.id);
+    debug!("resolve_block(blk.hir_id={:?})", blk.hir_id);
 
     let prev_cx = visitor.cx;
 

src/librustc/mir/interpret/error.rs

@@ -1,5 +1,6 @@
 use std::{fmt, env};
 
+use crate::hir;
 use crate::hir::map::definitions::DefPathData;
 use crate::mir;
 use crate::ty::{self, Ty, layout};
@@ -14,7 +15,6 @@ use crate::ty::query::TyCtxtAt;
 use errors::DiagnosticBuilder;
 
 use syntax_pos::{Pos, Span};
-use syntax::ast;
 use syntax::symbol::Symbol;
 
 #[derive(Debug, Copy, Clone, PartialEq, Eq)]
@@ -50,7 +50,7 @@ pub struct ConstEvalErr<'tcx> {
 pub struct FrameInfo<'tcx> {
     pub call_site: Span, // this span is in the caller!
     pub instance: ty::Instance<'tcx>,
-    pub lint_root: Option<ast::NodeId>,
+    pub lint_root: Option<hir::HirId>,
 }
 
 impl<'tcx> fmt::Display for FrameInfo<'tcx> {
@@ -98,7 +98,7 @@ impl<'a, 'gcx, 'tcx> ConstEvalErr<'tcx> {
     pub fn report_as_lint(&self,
         tcx: TyCtxtAt<'a, 'gcx, 'tcx>,
         message: &str,
-        lint_root: ast::NodeId,
+        lint_root: hir::HirId,
     ) -> ErrorHandled {
         let lint = self.struct_generic(
             tcx,
@@ -118,7 +118,7 @@ impl<'a, 'gcx, 'tcx> ConstEvalErr<'tcx> {
         &self,
         tcx: TyCtxtAt<'a, 'gcx, 'tcx>,
         message: &str,
-        lint_root: Option<ast::NodeId>,
+        lint_root: Option<hir::HirId>,
     ) -> Result<DiagnosticBuilder<'tcx>, ErrorHandled> {
         match self.error {
             EvalErrorKind::Layout(LayoutError::Unknown(_)) |
@@ -129,15 +129,15 @@ impl<'a, 'gcx, 'tcx> ConstEvalErr<'tcx> {
         }
         trace!("reporting const eval failure at {:?}", self.span);
         let mut err = if let Some(lint_root) = lint_root {
-            let node_id = self.stacktrace
+            let hir_id = self.stacktrace
                 .iter()
                 .rev()
                 .filter_map(|frame| frame.lint_root)
                 .next()
                 .unwrap_or(lint_root);
-            tcx.struct_span_lint_node(
+            tcx.struct_span_lint_hir(
                 crate::rustc::lint::builtin::CONST_ERR,
-                node_id,
+                hir_id,
                 tcx.span,
                 message,
             )

src/librustc/mir/mod.rs

@@ -413,7 +413,7 @@ pub enum Safety {
     /// Unsafe because of an unsafe fn
     FnUnsafe,
     /// Unsafe because of an `unsafe` block
-    ExplicitUnsafe(ast::NodeId),
+    ExplicitUnsafe(hir::HirId),
 }
 
 impl_stable_hash_for!(struct Mir<'tcx> {
@@ -2098,8 +2098,8 @@ pub struct SourceScopeData {
 
 #[derive(Clone, Debug, RustcEncodable, RustcDecodable)]
 pub struct SourceScopeLocalData {
-    /// A NodeId with lint levels equivalent to this scope's lint levels.
-    pub lint_root: ast::NodeId,
+    /// A HirId with lint levels equivalent to this scope's lint levels.
+    pub lint_root: hir::HirId,
     /// The unsafe block that contains this node.
     pub safety: Safety,
 }
@@ -2849,8 +2849,8 @@ pub enum UnsafetyViolationKind {
     General,
     /// Permitted in const fn and regular fns.
     GeneralAndConstFn,
-    ExternStatic(ast::NodeId),
-    BorrowPacked(ast::NodeId),
+    ExternStatic(hir::HirId),
+    BorrowPacked(hir::HirId),
 }
 
 #[derive(Copy, Clone, Debug, PartialEq, Eq, Hash, RustcEncodable, RustcDecodable)]
@@ -2867,7 +2867,7 @@ pub struct UnsafetyCheckResult {
     pub violations: Lrc<[UnsafetyViolation]>,
     /// unsafe blocks in this function, along with whether they are used. This is
     /// used for the "unused_unsafe" lint.
-    pub unsafe_blocks: Lrc<[(ast::NodeId, bool)]>,
+    pub unsafe_blocks: Lrc<[(hir::HirId, bool)]>,
 }
 
 /// The layout of generator state

src/librustc/traits/object_safety.rs

@@ -10,6 +10,7 @@
 
 use super::elaborate_predicates;
 
+use crate::hir;
 use crate::hir::def_id::DefId;
 use crate::lint;
 use crate::traits::{self, Obligation, ObligationCause};
@@ -129,7 +130,7 @@ impl<'a, 'tcx> TyCtxt<'a, 'tcx, 'tcx> {
                     // It's also hard to get a use site span, so we use the method definition span.
                     self.lint_node_note(
                         lint::builtin::WHERE_CLAUSES_OBJECT_SAFETY,
-                        ast::CRATE_NODE_ID,
+                        hir::CRATE_HIR_ID,
                         *span,
                         &format!("the trait `{}` cannot be made into an object",
                                  self.item_path_str(trait_def_id)),

src/librustc/ty/context.rs

@@ -2859,11 +2859,11 @@ impl<'a, 'gcx, 'tcx> TyCtxt<'a, 'gcx, 'tcx> {
 
     pub fn lint_node_note<S: Into<MultiSpan>>(self,
                                               lint: &'static Lint,
-                                              id: NodeId,
+                                              id: hir::HirId,
                                               span: S,
                                               msg: &str,
                                               note: &str) {
-        let mut err = self.struct_span_lint_node(lint, id, span.into(), msg);
+        let mut err = self.struct_span_lint_hir(lint, id, span.into(), msg);
         err.note(note);
         err.emit()
     }

src/librustc_driver/pretty.rs

@@ -420,8 +420,8 @@ impl<'hir> pprust_hir::PpAnn for IdentifiedAnnotation<'hir> {
             }
             pprust_hir::AnnNode::Block(blk) => {
                 s.s.space()?;
-                s.synth_comment(format!("block node_id: {} hir local_id: {}",
-                                        blk.id, blk.hir_id.local_id.as_u32()))
+                s.synth_comment(format!("block hir_id: {} hir local_id: {}",
+                                        blk.hir_id, blk.hir_id.local_id.as_u32()))
             }
             pprust_hir::AnnNode::Expr(expr) => {
                 s.s.space()?;

src/librustc_mir/borrow_check/mod.rs

@@ -301,7 +301,7 @@ fn do_mir_borrowck<'a, 'gcx, 'tcx>(
             }
 
             let mut_span = tcx.sess.source_map().span_until_non_whitespace(span);
-            tcx.struct_span_lint_node(
+            tcx.struct_span_lint_hir(
                 UNUSED_MUT,
                 vsi[local_decl.source_info.scope].lint_root,
                 span,

src/librustc_mir/build/block.rs

@@ -206,14 +206,14 @@ impl<'a, 'gcx, 'tcx> Builder<'a, 'gcx, 'tcx> {
         debug!("update_source_scope_for({:?}, {:?})", span, safety_mode);
         let new_unsafety = match safety_mode {
             BlockSafety::Safe => None,
-            BlockSafety::ExplicitUnsafe(node_id) => {
+            BlockSafety::ExplicitUnsafe(hir_id) => {
                 assert_eq!(self.push_unsafe_count, 0);
                 match self.unpushed_unsafe {
                     Safety::Safe => {}
                     _ => return
                 }
-                self.unpushed_unsafe = Safety::ExplicitUnsafe(node_id);
-                Some(Safety::ExplicitUnsafe(node_id))
+                self.unpushed_unsafe = Safety::ExplicitUnsafe(hir_id);
+                Some(Safety::ExplicitUnsafe(hir_id))
             }
             BlockSafety::PushUnsafe => {
                 self.push_unsafe_count += 1;

src/librustc_mir/build/mod.rs

@@ -72,13 +72,13 @@ pub fn mir_build<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>, def_id: DefId) -> Mir<'t
     };
 
     tcx.infer_ctxt().enter(|infcx| {
-        let cx = Cx::new(&infcx, id);
+        let fn_hir_id = tcx.hir().node_to_hir_id(id);
+        let cx = Cx::new(&infcx, fn_hir_id);
         let mut mir = if cx.tables().tainted_by_errors {
             build::construct_error(cx, body_id)
         } else if cx.body_owner_kind.is_fn_or_closure() {
             // fetch the fully liberated fn signature (that is, all bound
             // types/lifetimes replaced)
-            let fn_hir_id = tcx.hir().node_to_hir_id(id);
             let fn_sig = cx.tables().liberated_fn_sigs()[fn_hir_id].clone();
             let fn_def_id = tcx.hir().local_def_id(id);
 

src/librustc_mir/build/scope.rs

@@ -308,17 +308,11 @@ impl<'a, 'gcx, 'tcx> Builder<'a, 'gcx, 'tcx> {
         debug!("in_scope(region_scope={:?}, block={:?})", region_scope, block);
         let source_scope = self.source_scope;
         let tcx = self.hir.tcx();
-        if let LintLevel::Explicit(node_id) = lint_level {
+        if let LintLevel::Explicit(current_hir_id) = lint_level {
             let same_lint_scopes = tcx.dep_graph.with_ignore(|| {
                 let sets = tcx.lint_levels(LOCAL_CRATE);
-                let parent_hir_id =
-                    tcx.hir().definitions().node_to_hir_id(
-                        self.source_scope_local_data[source_scope].lint_root
-                    );
-                let current_hir_id =
-                    tcx.hir().definitions().node_to_hir_id(node_id);
-                sets.lint_level_set(parent_hir_id) ==
-                    sets.lint_level_set(current_hir_id)
+                let parent_hir_id = self.source_scope_local_data[source_scope].lint_root;
+                sets.lint_level_set(parent_hir_id) == sets.lint_level_set(current_hir_id)
             });
 
             if !same_lint_scopes {

src/librustc_mir/const_eval.rs

@@ -663,11 +663,11 @@ pub fn const_eval_raw_provider<'a, 'tcx>(
                 // because any code that existed before validation could not have failed validation
                 // thus preventing such a hard error from being a backwards compatibility hazard
                 Some(Def::Const(_)) | Some(Def::AssociatedConst(_)) => {
-                    let node_id = tcx.hir().as_local_node_id(def_id).unwrap();
+                    let hir_id = tcx.hir().as_local_hir_id(def_id).unwrap();
                     err.report_as_lint(
                         tcx.at(tcx.def_span(def_id)),
                         "any use of this value will cause an error",
-                        node_id,
+                        hir_id,
                     )
                 },
                 // promoting runtime code is only allowed to error if it references broken constants
@@ -683,7 +683,7 @@ pub fn const_eval_raw_provider<'a, 'tcx>(
                         err.report_as_lint(
                             tcx.at(span),
                             "reaching this expression at runtime will panic or abort",
-                            tcx.hir().as_local_node_id(def_id).unwrap(),
+                            tcx.hir().as_local_hir_id(def_id).unwrap(),
                         )
                     }
                 // anything else (array lengths, enum initializers, constant patterns) are reported

src/librustc_mir/hair/cx/block.rs

@@ -30,7 +30,7 @@ impl<'tcx> Mirror<'tcx> for &'tcx hir::Block {
                 hir::BlockCheckMode::DefaultBlock =>
                     BlockSafety::Safe,
                 hir::BlockCheckMode::UnsafeBlock(..) =>
-                    BlockSafety::ExplicitUnsafe(self.id),
+                    BlockSafety::ExplicitUnsafe(self.hir_id),
                 hir::BlockCheckMode::PushUnsafeBlock(..) =>
                     BlockSafety::PushUnsafe,
                 hir::BlockCheckMode::PopUnsafeBlock(..) =>