From 23436e7980ca058db0160aa234e1057efad3e12d Mon Sep 17 00:00:00 2001
From: Martin Verzilli <martin.verzilli@gmail.com>
Date: Mon, 9 Oct 2023 17:56:05 +0200
Subject: [PATCH] feat: highlight loc in debugger

---
 Cargo.lock                  | 12 ++++++++++++
 tooling/debugger/Cargo.toml |  3 ++-
 tooling/debugger/src/lib.rs |  4 +++-
 3 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 3cfbef76dc9..ca8d9b97e66 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -883,6 +883,17 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "acbf1af155f9b9ef647e42cdc158db4b64a1b61f743629225fde6f3e0be2a7c7"
 
+[[package]]
+name = "colored"
+version = "2.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2674ec482fbc38012cf31e6c42ba0177b431a0cb6f15fe40efa5aab1bda516f6"
+dependencies = [
+ "is-terminal",
+ "lazy_static",
+ "windows-sys 0.48.0",
+]
+
 [[package]]
 name = "console_error_panic_hook"
 version = "0.1.7"
@@ -2498,6 +2509,7 @@ name = "noir_debugger"
 version = "0.16.0"
 dependencies = [
  "acvm",
+ "colored",
  "easy-repl",
  "nargo",
  "noirc_printable_type",
diff --git a/tooling/debugger/Cargo.toml b/tooling/debugger/Cargo.toml
index 5b8248345a0..20f043e772d 100644
--- a/tooling/debugger/Cargo.toml
+++ b/tooling/debugger/Cargo.toml
@@ -13,4 +13,5 @@ acvm.workspace = true
 nargo.workspace = true
 noirc_printable_type.workspace = true
 thiserror.workspace = true
-easy-repl = "0.2.1"
\ No newline at end of file
+easy-repl = "0.2.1"
+colored = "2.0.4"
\ No newline at end of file
diff --git a/tooling/debugger/src/lib.rs b/tooling/debugger/src/lib.rs
index 306b8c7f301..63b9d590e22 100644
--- a/tooling/debugger/src/lib.rs
+++ b/tooling/debugger/src/lib.rs
@@ -14,6 +14,8 @@ use thiserror::Error;
 use easy_repl::{command, CommandStatus, Critical, Repl};
 use std::cell::{Cell, RefCell};
 
+use colored::Colorize;
+
 enum SolveResult {
     Done,
     Ok,
@@ -109,7 +111,7 @@ impl<'backend, B: BlackBoxFunctionSolver> DebugContext<'backend, B> {
                     let start = loc.span.start() as usize;
                     let end = loc.span.end() as usize;
                     println!("At {}:{start}-{end}", file.path.as_path().display());
-                    println!("\n{}\n", &source[start..end]);
+                    println!("\n{}{}{}\n", &source[0..start], &source[start..end].reversed(), &source[end..]);
                 }
             }
             None => {}