change fn name, return loc info, local name

compiler/rustc_smir/src/rustc_smir/mod.rs

@@ -17,7 +17,9 @@ use rustc_middle::ty::{self, Ty, TyCtxt, Variance};
 use rustc_span::def_id::{CrateNum, DefId, LOCAL_CRATE};
 use rustc_target::abi::FieldIdx;
 use stable_mir::mir::{CopyNonOverlapping, Statement, UserTypeProjection, VariantIdx};
-use stable_mir::ty::{FloatTy, GenericParamDef, IntTy, Movability, RigidTy, Span, TyKind, UintTy};
+use stable_mir::ty::{
+    FloatTy, GenericParamDef, IntTy, LineInfo, Movability, RigidTy, Span, TyKind, UintTy,
+};
 use stable_mir::{self, opaque, Context, Filename};
 use tracing::debug;
 
@@ -50,7 +52,7 @@ impl<'tcx> Context for Tables<'tcx> {
         self.tcx.def_path_str(self[def_id])
     }
 
-    fn print_span(&self, span: stable_mir::ty::Span) -> String {
+    fn span_to_string(&self, span: stable_mir::ty::Span) -> String {
         self.tcx.sess.source_map().span_to_diagnostic_string(self[span])
     }
 
@@ -61,27 +63,14 @@ impl<'tcx> Context for Tables<'tcx> {
                 .sess
                 .source_map()
                 .span_to_filename(self[*span])
-                .display(rustc_span::FileNameDisplayPreference::Short)
+                .display(rustc_span::FileNameDisplayPreference::Local)
                 .to_string(),
         )
     }
 
-    fn get_lines(&self, span: &Span) -> Vec<stable_mir::ty::LineInfo> {
-        let lines = &self
-            .tcx
-            .sess
-            .source_map()
-            .span_to_lines(self[*span])
-            .unwrap()
-            .lines
-            .iter()
-            .map(|line| stable_mir::ty::LineInfo {
-                line_index: line.line_index + 1,
-                start_col: line.start_col.0 + 1,
-                end_col: line.end_col.0 + 1,
-            })
-            .collect::<Vec<stable_mir::ty::LineInfo>>();
-        lines.to_vec()
+    fn get_lines(&self, span: &Span) -> LineInfo {
+        let lines = &self.tcx.sess.source_map().span_to_location_info(self[*span]);
+        LineInfo { start_line: lines.1, start_col: lines.2, end_line: lines.3, end_col: lines.4 }
     }
 
     fn def_kind(&mut self, def_id: stable_mir::DefId) -> stable_mir::DefKind {

compiler/stable_mir/src/lib.rs

@@ -201,13 +201,13 @@ pub trait Context {
     fn name_of_def_id(&self, def_id: DefId) -> String;
 
     /// Returns printable, human readable form of `Span`
-    fn print_span(&self, span: Span) -> String;
+    fn span_to_string(&self, span: Span) -> String;
 
     /// Return filename from given `Span`, for diagnostic purposes
     fn get_filename(&self, span: &Span) -> Filename;
 
     /// Return lines corresponding to this `Span`
-    fn get_lines(&self, span: &Span) -> Vec<LineInfo>;
+    fn get_lines(&self, span: &Span) -> LineInfo;
 
     /// Returns the `kind` of given `DefId`
     fn def_kind(&mut self, def_id: DefId) -> DefKind;

compiler/stable_mir/src/ty.rs

@@ -81,7 +81,7 @@ impl Debug for Span {
     fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
         f.debug_struct("Span")
             .field("id", &self.0)
-            .field("repr", &with(|cx| cx.print_span(*self)))
+            .field("repr", &with(|cx| cx.span_to_string(*self)))
             .finish()
     }
 }
@@ -93,7 +93,7 @@ impl Span {
     }
 
     /// Return lines that corespond to this `Span`
-    pub fn get_lines(&self) -> Vec<LineInfo> {
+    pub fn get_lines(&self) -> LineInfo {
         with(|c| c.get_lines(&self))
     }
 }
@@ -102,8 +102,9 @@ impl Span {
 /// Information you get from `Span` in a struct form.
 /// Line and col start from 1.
 pub struct LineInfo {
-    pub line_index: usize,
+    pub start_line: usize,
     pub start_col: usize,
+    pub end_line: usize,
     pub end_col: usize,
 }