From b22cb40565b118632b635bce0028d6a037d906d1 Mon Sep 17 00:00:00 2001
From: Idan Horowitz <idan.horowitz@gmail.com>
Date: Tue, 15 Feb 2022 23:32:59 +0200
Subject: [PATCH] AK: Exclude GenericLexer String APIs from the Kernel

These APIs are only used by userland, and String is OOM-infallible,
so let's just ifdef it out of the Kernel.
---
 AK/GenericLexer.cpp | 9 +++++++--
 AK/GenericLexer.h   | 8 ++++++++
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/AK/GenericLexer.cpp b/AK/GenericLexer.cpp
index 8a55451dafa..d6e977a0074 100644
--- a/AK/GenericLexer.cpp
+++ b/AK/GenericLexer.cpp
@@ -7,9 +7,12 @@
 #include <AK/Assertions.h>
 #include <AK/CharacterTypes.h>
 #include <AK/GenericLexer.h>
-#include <AK/String.h>
 #include <AK/StringBuilder.h>
-#include <AK/Utf16View.h>
+
+#ifndef KERNEL
+#    include <AK/String.h>
+#    include <AK/Utf16View.h>
+#endif
 
 namespace AK {
 // Consume a number of characters
@@ -125,6 +128,7 @@ StringView GenericLexer::consume_quoted_string(char escape_char)
     return m_input.substring_view(start, length);
 }
 
+#ifndef KERNEL
 String GenericLexer::consume_and_unescape_string(char escape_char)
 {
     auto view = consume_quoted_string(escape_char);
@@ -206,5 +210,6 @@ auto GenericLexer::decode_single_or_paired_surrogate(bool combine_surrogate_pair
     retreat(6);
     return *high_surrogate;
 }
+#endif
 
 }
diff --git a/AK/GenericLexer.h b/AK/GenericLexer.h
index 37604d2bd54..3c317782d43 100644
--- a/AK/GenericLexer.h
+++ b/AK/GenericLexer.h
@@ -83,10 +83,12 @@ public:
         return true;
     }
 
+#ifndef KERNEL
     bool consume_specific(const String& next)
     {
         return consume_specific(StringView { next });
     }
+#endif
 
     constexpr bool consume_specific(const char* next)
     {
@@ -115,14 +117,18 @@ public:
     StringView consume_until(const char*);
     StringView consume_until(StringView);
     StringView consume_quoted_string(char escape_char = 0);
+#ifndef KERNEL
     String consume_and_unescape_string(char escape_char = '\\');
+#endif
 
     enum class UnicodeEscapeError {
         MalformedUnicodeEscape,
         UnicodeEscapeOverflow,
     };
 
+#ifndef KERNEL
     Result<u32, UnicodeEscapeError> consume_escaped_code_point(bool combine_surrogate_pairs = true);
+#endif
 
     constexpr void ignore(size_t count = 1)
     {
@@ -212,8 +218,10 @@ protected:
     size_t m_index { 0 };
 
 private:
+#ifndef KERNEL
     Result<u32, UnicodeEscapeError> decode_code_point();
     Result<u32, UnicodeEscapeError> decode_single_or_paired_surrogate(bool combine_surrogate_pairs);
+#endif
 };
 
 constexpr auto is_any_of(StringView values)