From 3706678b8971892ff18e4bf7410940720781b04a Mon Sep 17 00:00:00 2001
From: Max Brunsfeld <maxbrunsfeld@gmail.com>
Date: Wed, 21 Dec 2016 13:58:18 -0800
Subject: [PATCH] Pass const TSExternalTokenState to external scanner
 deserialize hook

---
 include/tree_sitter/parser.h         | 2 +-
 src/compiler/generate_code/c_code.cc | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/tree_sitter/parser.h b/include/tree_sitter/parser.h
index eea5f76f..8e5658f4 100644
--- a/include/tree_sitter/parser.h
+++ b/include/tree_sitter/parser.h
@@ -82,7 +82,7 @@ typedef struct TSLanguage {
     void (*reset)(void *);
     bool (*scan)(void *, TSLexer *, const bool *symbol_whitelist);
     bool (*serialize)(void *, TSExternalTokenState);
-    void (*deserialize)(void *, TSExternalTokenState);
+    void (*deserialize)(void *, const TSExternalTokenState);
   } external_scanner;
 } TSLanguage;
 
diff --git a/src/compiler/generate_code/c_code.cc b/src/compiler/generate_code/c_code.cc
index d5eab8b0..a28648c8 100644
--- a/src/compiler/generate_code/c_code.cc
+++ b/src/compiler/generate_code/c_code.cc
@@ -361,7 +361,7 @@ class CCodeGenerator {
       line("void " + external_scanner_name + "_reset(void *);");
       line("bool " + external_scanner_name + "_scan(void *, TSLexer *, const bool *);");
       line("bool " + external_scanner_name + "_serialize(void *, TSExternalTokenState);");
-      line("void " + external_scanner_name + "_deserialize(void *, TSExternalTokenState);");
+      line("void " + external_scanner_name + "_deserialize(void *, const TSExternalTokenState);");
       line();
     }