Track token position in AST Token node

assets/parser.c.erb

@@ -951,6 +951,7 @@ size_t <%= @grammar.prefix %>parse(<%= @grammar.prefix %>context_t * context)
                 <%= @grammar.ast_prefix %>Token<%= @grammar.ast_suffix %> * token_ast_node = malloc(sizeof(<%= @grammar.ast_prefix %>Token<%= @grammar.ast_suffix %>));
                 token_ast_node->token = token;
                 token_ast_node->pvalue = token_info.pvalue;
+                token_ast_node->position = token_info.position;
                 state_values_stack_index(&statevalues, -1)->ast_node = token_ast_node;
 <% else %>
                 state_values_stack_index(&statevalues, -1)->pvalue = token_info.pvalue;