From b3cbe1456969586994c0612f46a5ce9c55a41f25 Mon Sep 17 00:00:00 2001
From: Ali Mohammad Pur <ali.mpfard@gmail.com>
Date: Wed, 28 Jul 2021 05:37:52 +0430
Subject: [PATCH] LibCpp: Allow 'const' after a function's signature

This is too lax for functions that aren't class members, but let's
allow that anyway.
---
 Userland/Libraries/LibCpp/Parser.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Userland/Libraries/LibCpp/Parser.cpp b/Userland/Libraries/LibCpp/Parser.cpp
index 64c814d717..d41bb415be 100644
--- a/Userland/Libraries/LibCpp/Parser.cpp
+++ b/Userland/Libraries/LibCpp/Parser.cpp
@@ -132,6 +132,11 @@ NonnullRefPtr<FunctionDeclaration> Parser::parse_function_declaration(ASTNode& p
 
     consume(Token::Type::RightParen);
 
+    if (match_keyword("const")) {
+        consume();
+        // FIXME: Note that this function is supposed to be a class member, and `this` has to be const, somehow.
+    }
+
     RefPtr<FunctionDefinition> body;
     Position func_end {};
     if (peek(Token::Type::LeftCurly).has_value()) {
@@ -739,6 +744,9 @@ bool Parser::match_function_declaration()
 
     while (consume().type() != Token::Type::RightParen && !eof()) { };
 
+    if (match_keyword("const"))
+        consume();
+
     if (peek(Token::Type::Semicolon).has_value() || peek(Token::Type::LeftCurly).has_value())
         return true;