From 0e5c9340725a5ee0b419c8e61f221049ee3c542e Mon Sep 17 00:00:00 2001
From: Aryadev Chavali <aryadev@aryadevchavali.com>
Date: Mon, 15 Apr 2024 05:08:07 +0630
Subject: preprocess_* now uses const references to tokens

They copy and construct new token vectors and just read the token
inputs.
---
 asm/preprocesser.cpp | 4 ++--
 asm/preprocesser.hpp | 6 +++---
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/asm/preprocesser.cpp b/asm/preprocesser.cpp
index dd7067a..aae1f0b 100644
--- a/asm/preprocesser.cpp
+++ b/asm/preprocesser.cpp
@@ -22,7 +22,7 @@ using std::pair, std::vector, std::make_pair, std::string, std::string_view;
 #define VAL(E) std::make_pair(E, pp_err_t{pp_err_type_t::OK})
 
 pair<vector<token_t *>, pp_err_t>
-preprocess_use_blocks(vector<token_t *> tokens)
+preprocess_use_blocks(const vector<token_t *> &tokens)
 {
   vector<token_t *> new_tokens;
   for (size_t i = 0; i < tokens.size(); ++i)
@@ -69,7 +69,7 @@ struct const_t
 };
 
 pair<vector<token_t *>, pp_err_t>
-preprocess_const_blocks(vector<token_t *> &tokens)
+preprocess_const_blocks(vector<token_t *> const &tokens)
 {
   std::unordered_map<string_view, const_t> blocks;
   for (size_t i = 0; i < tokens.size(); ++i)
diff --git a/asm/preprocesser.hpp b/asm/preprocesser.hpp
index a1d8a31..0d340df 100644
--- a/asm/preprocesser.hpp
+++ b/asm/preprocesser.hpp
@@ -45,13 +45,13 @@ std::pair<std::vector<token_t *>, pp_err_t>
 preprocesser(std::vector<token_t *> &);
 
 std::pair<std::vector<token_t *>, pp_err_t>
-preprocess_const_blocks(std::vector<token_t *> &);
+preprocess_const_blocks(const std::vector<token_t *> &);
 
 std::pair<std::vector<token_t *>, pp_err_t>
-preprocess_use_blocks(std::vector<token_t *> &);
+preprocess_use_blocks(const std::vector<token_t *> &);
 
 // TODO: Implement this
 std::pair<std::vector<token_t *>, pp_err_t>
-preprocess_macro_blocks(std::vector<token_t *> &);
+preprocess_macro_blocks(const std::vector<token_t *> &);
 
 #endif
-- 
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