From 6a554b501c4baa041c7f1edc81bfbd1b12c1c0a8 Mon Sep 17 00:00:00 2001
From: Erica Fischer <enf@felt.com>
Date: Thu, 25 Jan 2024 10:32:33 -0800
Subject: [PATCH] More const references

---
 clip.cpp     | 4 ++--
 geometry.hpp | 4 ++--
 mvt.cpp      | 2 +-
 mvt.hpp      | 2 +-
 4 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/clip.cpp b/clip.cpp
index cd5cd6e5..0cdb3926 100644
--- a/clip.cpp
+++ b/clip.cpp
@@ -755,7 +755,7 @@ static std::vector<std::pair<double, double>> clip_poly1(std::vector<std::pair<d
 	return out;
 }
 
-std::string overzoom(std::string s, int oz, int ox, int oy, int nz, int nx, int ny,
+std::string overzoom(const std::string &s, int oz, int ox, int oy, int nz, int nx, int ny,
 		     int detail, int buffer, std::set<std::string> const &keep, bool do_compress,
 		     std::vector<std::pair<unsigned, unsigned>> *next_overzoomed_tiles,
 		     bool demultiply, json_object *filter, bool preserve_input_order, std::unordered_map<std::string, attribute_op> const &attribute_accum) {
@@ -870,7 +870,7 @@ static struct preservecmp {
 	}
 } preservecmp;
 
-std::string overzoom(mvt_tile tile, int oz, int ox, int oy, int nz, int nx, int ny,
+std::string overzoom(const mvt_tile &tile, int oz, int ox, int oy, int nz, int nx, int ny,
 		     int detail, int buffer, std::set<std::string> const &keep, bool do_compress,
 		     std::vector<std::pair<unsigned, unsigned>> *next_overzoomed_tiles,
 		     bool demultiply, json_object *filter, bool preserve_input_order, std::unordered_map<std::string, attribute_op> const &attribute_accum) {
diff --git a/geometry.hpp b/geometry.hpp
index d1006002..cb764992 100644
--- a/geometry.hpp
+++ b/geometry.hpp
@@ -100,13 +100,13 @@ void visvalingam(drawvec &ls, size_t start, size_t end, double threshold, size_t
 int pnpoly(const drawvec &vert, size_t start, size_t nvert, long long testx, long long testy);
 double distance_from_line(long long point_x, long long point_y, long long segA_x, long long segA_y, long long segB_x, long long segB_y);
 
-std::string overzoom(mvt_tile tile, int oz, int ox, int oy, int nz, int nx, int ny,
+std::string overzoom(const mvt_tile &tile, int oz, int ox, int oy, int nz, int nx, int ny,
 		     int detail, int buffer, std::set<std::string> const &keep, bool do_compress,
 		     std::vector<std::pair<unsigned, unsigned>> *next_overzoomed_tiles,
 		     bool demultiply, json_object *filter, bool preserve_input_order,
 		     std::unordered_map<std::string, attribute_op> const &attribute_accum);
 
-std::string overzoom(std::string s, int oz, int ox, int oy, int nz, int nx, int ny,
+std::string overzoom(const std::string &s, int oz, int ox, int oy, int nz, int nx, int ny,
 		     int detail, int buffer, std::set<std::string> const &keep, bool do_compress,
 		     std::vector<std::pair<unsigned, unsigned>> *next_overzoomed_tiles,
 		     bool demultiply, json_object *filter, bool preserve_input_order,
diff --git a/mvt.cpp b/mvt.cpp
index 779d8214..527199ad 100644
--- a/mvt.cpp
+++ b/mvt.cpp
@@ -110,7 +110,7 @@ int compress(std::string const &input, std::string &output, bool gz) {
 	return 0;
 }
 
-bool mvt_tile::decode(std::string &message, bool &was_compressed) {
+bool mvt_tile::decode(const std::string &message, bool &was_compressed) {
 	layers.clear();
 	std::string src;
 
diff --git a/mvt.hpp b/mvt.hpp
index 2f25ddc9..a0b3c123 100644
--- a/mvt.hpp
+++ b/mvt.hpp
@@ -154,7 +154,7 @@ struct mvt_tile {
 	std::vector<mvt_layer> layers{};
 
 	std::string encode();
-	bool decode(std::string &message, bool &was_compressed);
+	bool decode(const std::string &message, bool &was_compressed);
 };
 
 bool is_compressed(std::string const &data);