From a7858bb7bf0a784d56b2b9ef97785a4fa78f7853 Mon Sep 17 00:00:00 2001
From: Florian Diebold <flodiebold@gmail.com>
Date: Sun, 25 Aug 2019 19:28:32 +0200
Subject: Report type mismatches in analysis-stats

Only the number usually; each one individually when running with -v.
---
 crates/ra_cli/src/analysis_stats.rs | 38 ++++++++++++++++++++++++++++++++++++-
 crates/ra_hir/src/code_model.rs     |  2 +-
 crates/ra_hir/src/expr.rs           | 12 ++++++------
 3 files changed, 44 insertions(+), 8 deletions(-)

diff --git a/crates/ra_cli/src/analysis_stats.rs b/crates/ra_cli/src/analysis_stats.rs
index 7e7e6c073..77fa1d26e 100644
--- a/crates/ra_cli/src/analysis_stats.rs
+++ b/crates/ra_cli/src/analysis_stats.rs
@@ -1,7 +1,7 @@
 use std::{collections::HashSet, fmt::Write, path::Path, time::Instant};
 
 use ra_db::SourceDatabase;
-use ra_hir::{Crate, HasSource, ImplItem, ModuleDef, Ty};
+use ra_hir::{Crate, HasSource, HirDisplay, ImplItem, ModuleDef, Ty};
 use ra_syntax::AstNode;
 
 use crate::Result;
@@ -66,6 +66,7 @@ pub fn run(verbose: bool, memory_usage: bool, path: &Path, only: Option<&str>) -
     let mut num_exprs = 0;
     let mut num_exprs_unknown = 0;
     let mut num_exprs_partially_unknown = 0;
+    let mut num_type_mismatches = 0;
     for f in funcs {
         let name = f.name(db);
         let mut msg = format!("processing: {}", name);
@@ -100,6 +101,40 @@ pub fn run(verbose: bool, memory_usage: bool, path: &Path, only: Option<&str>) -
                     num_exprs_partially_unknown += 1;
                 }
             }
+            if let Some(mismatch) = inference_result.type_mismatch_for_expr(expr_id) {
+                num_type_mismatches += 1;
+                if verbose {
+                    let src = f.source(db);
+                    let original_file = src.file_id.original_file(db);
+                    let path = db.file_relative_path(original_file);
+                    let line_index = host.analysis().file_line_index(original_file).unwrap();
+                    let body_source_map = f.body_source_map(db);
+                    let syntax_node = body_source_map.expr_syntax(expr_id);
+                    let line_col = syntax_node.map(|syntax_node| {
+                        (
+                            line_index.line_col(syntax_node.range().start()),
+                            line_index.line_col(syntax_node.range().end()),
+                        )
+                    });
+                    let line_col = match line_col {
+                        Some((start, end)) => format!(
+                            "{}:{}-{}:{}",
+                            start.line + 1,
+                            start.col_utf16,
+                            end.line + 1,
+                            end.col_utf16
+                        ),
+                        None => "?:?".to_string(),
+                    };
+                    bar.println(format!(
+                        "{} {}: Expected {}, got {}",
+                        path.display(),
+                        line_col,
+                        mismatch.expected.display(db),
+                        mismatch.actual.display(db)
+                    ));
+                }
+            }
         }
         bar.inc(1);
     }
@@ -115,6 +150,7 @@ pub fn run(verbose: bool, memory_usage: bool, path: &Path, only: Option<&str>) -
         num_exprs_partially_unknown,
         (num_exprs_partially_unknown * 100 / num_exprs)
     );
+    println!("Type mismatches: {}", num_type_mismatches);
     println!("Inference: {:?}, {}", inference_time.elapsed(), ra_prof::memory_usage());
     println!("Total: {:?}, {}", analysis_time.elapsed(), ra_prof::memory_usage());
 
diff --git a/crates/ra_hir/src/code_model.rs b/crates/ra_hir/src/code_model.rs
index 66a58efed..0f9ff97f1 100644
--- a/crates/ra_hir/src/code_model.rs
+++ b/crates/ra_hir/src/code_model.rs
@@ -617,7 +617,7 @@ impl Function {
         self.data(db).name.clone()
     }
 
-    pub(crate) fn body_source_map(self, db: &impl HirDatabase) -> Arc<BodySourceMap> {
+    pub fn body_source_map(self, db: &impl HirDatabase) -> Arc<BodySourceMap> {
         db.body_with_source_map(self.into()).1
     }
 
diff --git a/crates/ra_hir/src/expr.rs b/crates/ra_hir/src/expr.rs
index 7cdc7555c..57225ae91 100644
--- a/crates/ra_hir/src/expr.rs
+++ b/crates/ra_hir/src/expr.rs
@@ -128,27 +128,27 @@ impl Index<PatId> for Body {
 }
 
 impl BodySourceMap {
-    pub(crate) fn expr_syntax(&self, expr: ExprId) -> Option<SyntaxNodePtr> {
+    pub fn expr_syntax(&self, expr: ExprId) -> Option<SyntaxNodePtr> {
         self.expr_map_back.get(expr).cloned()
     }
 
-    pub(crate) fn syntax_expr(&self, ptr: SyntaxNodePtr) -> Option<ExprId> {
+    pub fn syntax_expr(&self, ptr: SyntaxNodePtr) -> Option<ExprId> {
         self.expr_map.get(&ptr).cloned()
     }
 
-    pub(crate) fn node_expr(&self, node: &ast::Expr) -> Option<ExprId> {
+    pub fn node_expr(&self, node: &ast::Expr) -> Option<ExprId> {
         self.expr_map.get(&SyntaxNodePtr::new(node.syntax())).cloned()
     }
 
-    pub(crate) fn pat_syntax(&self, pat: PatId) -> Option<PatPtr> {
+    pub fn pat_syntax(&self, pat: PatId) -> Option<PatPtr> {
         self.pat_map_back.get(pat).cloned()
     }
 
-    pub(crate) fn node_pat(&self, node: &ast::Pat) -> Option<PatId> {
+    pub fn node_pat(&self, node: &ast::Pat) -> Option<PatId> {
         self.pat_map.get(&Either::A(AstPtr::new(node))).cloned()
     }
 
-    pub(crate) fn field_syntax(&self, expr: ExprId, field: usize) -> AstPtr<ast::RecordField> {
+    pub fn field_syntax(&self, expr: ExprId, field: usize) -> AstPtr<ast::RecordField> {
         self.field_map[&(expr, field)]
     }
 }
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