From 45aede8bf512fac04406d101f6468e41537e7856 Mon Sep 17 00:00:00 2001
From: Andrew Hlynskyi <ahlincq@gmail.com>
Date: Thu, 13 Jul 2023 00:36:16 +0300
Subject: [PATCH] script/generate-bindings - protect from using old
 incompatible bindgen versions

---
 script/generate-bindings | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/script/generate-bindings b/script/generate-bindings
index e68a7e57..da1796ba 100755
--- a/script/generate-bindings
+++ b/script/generate-bindings
@@ -16,6 +16,18 @@ no_derive_copy=(
 )
 no_copy=$(IFS='|'; echo "${no_derive_copy[*]}")
 
+file_version=$(head -n1 "$output_path" | cut -d' ' -f6)
+tool_version=$(bindgen --version | cut -d' ' -f2)
+higher_version=$(echo -e "${file_version}\n${tool_version}" | sort -V | tail -n1)
+
+if [ "$higher_version" != "$tool_version" ]; then
+  echo "Latest used bindgen version was $file_version" >&2
+  echo "Currently installed bindgen CLI version is $tool_version" >&2
+  echo >&2
+  echo "It's needed to upgrade bindgen CLI first with \`cargo install bindgen-cli\`" >&2
+  exit 1
+fi
+
 bindgen                                        \
   --no-layout-tests                            \
   --allowlist-type '^TS.*'                     \
@@ -31,7 +43,7 @@ defines=(
   TREE_SITTER_MIN_COMPATIBLE_LANGUAGE_VERSION
 )
 
-for define in ${defines[@]}; do
-  define_value=$(egrep "#define $define (.*)" $header_path | cut -d' ' -f3)
+for define in "${defines[@]}"; do
+  define_value=$(grep -E "#define $define (.*)" $header_path | cut -d' ' -f3)
   echo "pub const $define: usize = $define_value;" >> $output_path
 done