From 91807aac61963d32af19b6e4b27c46d6845e4e78 Mon Sep 17 00:00:00 2001
From: Gareth Pendleton <gareth.sidebottom@gmail.com>
Date: Sun, 19 Oct 2025 19:16:33 +0100
Subject: [PATCH] perf: Removed erlang/js specific parsing

This currently seems to compile exactly the same in 1.12.0 and 1.13.0 so
therefore has a performance regression
---
 src/gluri/internal/parser.gleam | 117 --------------------------------
 src/gluri/internal/utils.gleam  |  31 ---------
 2 files changed, 148 deletions(-)

diff --git a/src/gluri/internal/parser.gleam b/src/gluri/internal/parser.gleam
index ad71f90..0dfd4d4 100644
--- a/src/gluri/internal/parser.gleam
+++ b/src/gluri/internal/parser.gleam
@@ -729,25 +729,6 @@ fn parse_unreserved(str: String) -> Result(#(String, String), Nil) {
 //               / "*" / "+" / "," / ";" / "="
 //                 %21 / %24 / %26 / %27 / %28 / %29
 //               / %2A / %2B / %2C / %3B / %3D
-@target(erlang)
-fn parse_sub_delim(str: String) -> Result(#(String, String), Nil) {
-  case string.pop_grapheme(str) {
-    Ok(#("!" as char, tail))
-    | Ok(#("$" as char, tail))
-    | Ok(#("&" as char, tail))
-    | Ok(#("'" as char, tail))
-    | Ok(#("(" as char, tail))
-    | Ok(#(")" as char, tail))
-    | Ok(#("*" as char, tail))
-    | Ok(#("+" as char, tail))
-    | Ok(#("," as char, tail))
-    | Ok(#(";" as char, tail))
-    | Ok(#("=" as char, tail)) -> Ok(#(char, tail))
-    _ -> Error(Nil)
-  }
-}
-
-@target(javascript)
 fn parse_sub_delim(str: String) -> Result(#(String, String), Nil) {
   case str {
     "!" as char <> tail
@@ -766,25 +747,6 @@ fn parse_sub_delim(str: String) -> Result(#(String, String), Nil) {
 }
 
 // DIGIT    = %x30–39
-@target(erlang)
-fn parse_digit(str: String) -> Result(#(String, String), Nil) {
-  case string.pop_grapheme(str) {
-    Ok(#("0" as char, tail))
-    | Ok(#("1" as char, tail))
-    | Ok(#("2" as char, tail))
-    | Ok(#("3" as char, tail))
-    | Ok(#("4" as char, tail))
-    | Ok(#("5" as char, tail))
-    | Ok(#("6" as char, tail))
-    | Ok(#("7" as char, tail))
-    | Ok(#("8" as char, tail))
-    | Ok(#("9" as char, tail)) -> Ok(#(char, tail))
-
-    _ -> Error(Nil)
-  }
-}
-
-@target(javascript)
 fn parse_digit(str: String) -> Result(#(String, String), Nil) {
   case str {
     "0" as char <> tail
@@ -803,24 +765,6 @@ fn parse_digit(str: String) -> Result(#(String, String), Nil) {
 }
 
 // DIGIT (non-zero)    = %x31–39
-@target(erlang)
-fn parse_digit_nz(str: String) -> Result(#(String, String), Nil) {
-  case string.pop_grapheme(str) {
-    Ok(#("1" as char, tail))
-    | Ok(#("2" as char, tail))
-    | Ok(#("3" as char, tail))
-    | Ok(#("4" as char, tail))
-    | Ok(#("5" as char, tail))
-    | Ok(#("6" as char, tail))
-    | Ok(#("7" as char, tail))
-    | Ok(#("8" as char, tail))
-    | Ok(#("9" as char, tail)) -> Ok(#(char, tail))
-
-    _ -> Error(Nil)
-  }
-}
-
-@target(javascript)
 fn parse_digit_nz(str: String) -> Result(#(String, String), Nil) {
   case str {
     "1" as char <> tail
@@ -847,67 +791,6 @@ fn parse_digits(str: String, digits: String) {
 }
 
 // ALPHA    = %x41–5A | %x61–7A
-@target(erlang)
-fn parse_alpha(str: String) -> Result(#(String, String), Nil) {
-  case string.pop_grapheme(str) {
-    Ok(#("a" as char, tail))
-    | Ok(#("b" as char, tail))
-    | Ok(#("c" as char, tail))
-    | Ok(#("d" as char, tail))
-    | Ok(#("e" as char, tail))
-    | Ok(#("f" as char, tail))
-    | Ok(#("g" as char, tail))
-    | Ok(#("h" as char, tail))
-    | Ok(#("i" as char, tail))
-    | Ok(#("j" as char, tail))
-    | Ok(#("k" as char, tail))
-    | Ok(#("l" as char, tail))
-    | Ok(#("m" as char, tail))
-    | Ok(#("n" as char, tail))
-    | Ok(#("o" as char, tail))
-    | Ok(#("p" as char, tail))
-    | Ok(#("q" as char, tail))
-    | Ok(#("r" as char, tail))
-    | Ok(#("s" as char, tail))
-    | Ok(#("t" as char, tail))
-    | Ok(#("u" as char, tail))
-    | Ok(#("v" as char, tail))
-    | Ok(#("w" as char, tail))
-    | Ok(#("x" as char, tail))
-    | Ok(#("y" as char, tail))
-    | Ok(#("z" as char, tail))
-    | Ok(#("A" as char, tail))
-    | Ok(#("B" as char, tail))
-    | Ok(#("C" as char, tail))
-    | Ok(#("D" as char, tail))
-    | Ok(#("E" as char, tail))
-    | Ok(#("F" as char, tail))
-    | Ok(#("G" as char, tail))
-    | Ok(#("H" as char, tail))
-    | Ok(#("I" as char, tail))
-    | Ok(#("J" as char, tail))
-    | Ok(#("K" as char, tail))
-    | Ok(#("L" as char, tail))
-    | Ok(#("M" as char, tail))
-    | Ok(#("N" as char, tail))
-    | Ok(#("O" as char, tail))
-    | Ok(#("P" as char, tail))
-    | Ok(#("Q" as char, tail))
-    | Ok(#("R" as char, tail))
-    | Ok(#("S" as char, tail))
-    | Ok(#("T" as char, tail))
-    | Ok(#("U" as char, tail))
-    | Ok(#("V" as char, tail))
-    | Ok(#("W" as char, tail))
-    | Ok(#("X" as char, tail))
-    | Ok(#("Y" as char, tail))
-    | Ok(#("Z" as char, tail)) -> Ok(#(char, tail))
-
-    _ -> Error(Nil)
-  }
-}
-
-@target(javascript)
 fn parse_alpha(str: String) -> Result(#(String, String), Nil) {
   case str {
     "a" as char <> tail
diff --git a/src/gluri/internal/utils.gleam b/src/gluri/internal/utils.gleam
index d49483f..4e54d8e 100644
--- a/src/gluri/internal/utils.gleam
+++ b/src/gluri/internal/utils.gleam
@@ -370,37 +370,6 @@ fn unescape_percent(str: String) -> String {
   }
 }
 
-@target(erlang)
-pub fn parse_hex_digit(str: String) -> Result(#(String, String), Nil) {
-  case string.pop_grapheme(str) {
-    Ok(#("0" as char, tail))
-    | Ok(#("1" as char, tail))
-    | Ok(#("2" as char, tail))
-    | Ok(#("3" as char, tail))
-    | Ok(#("4" as char, tail))
-    | Ok(#("5" as char, tail))
-    | Ok(#("6" as char, tail))
-    | Ok(#("7" as char, tail))
-    | Ok(#("8" as char, tail))
-    | Ok(#("9" as char, tail))
-    | Ok(#("a" as char, tail))
-    | Ok(#("b" as char, tail))
-    | Ok(#("c" as char, tail))
-    | Ok(#("d" as char, tail))
-    | Ok(#("e" as char, tail))
-    | Ok(#("f" as char, tail))
-    | Ok(#("A" as char, tail))
-    | Ok(#("B" as char, tail))
-    | Ok(#("C" as char, tail))
-    | Ok(#("D" as char, tail))
-    | Ok(#("E" as char, tail))
-    | Ok(#("F" as char, tail)) -> Ok(#(char, tail))
-
-    _ -> Error(Nil)
-  }
-}
-
-@target(javascript)
 pub fn parse_hex_digit(str: String) -> Result(#(String, String), Nil) {
   case str {
     "0" as char <> tail