fix: use dynamically growing error buffer in ParseScript (#1007)

* fix: use dynamically growing error buffer in ParseScript

* style: format code

* fix: use dynamically growing error buffer in ValidateScript

---------

Co-authored-by: ahuo <[email protected]>

Author: ahuo1

src/script_parser.cpp

@@ -13,11 +13,12 @@ using ErrorReport = lexy_ext::_report_error<char*>;
 
 Expected<ScriptFunction> ParseScript(const std::string& script)
 {
-  char error_msgs_buffer[2048];
+  std::string error_msgs_buffer;  // dynamically growing error buffer
 
   auto input = lexy::string_input<lexy::utf8_encoding>(script);
-  auto result =
-      lexy::parse<BT::Grammar::stmt>(input, ErrorReport().to(error_msgs_buffer));
+
+  auto reporter = ErrorReport().to(std::back_inserter(error_msgs_buffer));
+  auto result = lexy::parse<BT::Grammar::stmt>(input, reporter);
   if(result.has_value() && result.error_count() == 0)
   {
     try
@@ -69,11 +70,12 @@ BT::Expected<Any> ParseScriptAndExecute(Ast::Environment& env, const std::string
 
 Result ValidateScript(const std::string& script)
 {
-  char error_msgs_buffer[2048];
+  std::string error_msgs_buffer;  // dynamically growing error buffer
 
   auto input = lexy::string_input<lexy::utf8_encoding>(script);
-  auto result =
-      lexy::parse<BT::Grammar::stmt>(input, ErrorReport().to(error_msgs_buffer));
+
+  auto reporter = ErrorReport().to(std::back_inserter(error_msgs_buffer));
+  auto result = lexy::parse<BT::Grammar::stmt>(input, reporter);
   if(result.has_value() && result.error_count() == 0)
   {
     try