Everywhere: Hoist the Libraries folder to the top-level

Author: https://github.com/trflynn89
Commit: 93712b24bf
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2256
Reviewed-by: https://github.com/sideshowbarker

Libraries/LibJS/ParserError.cpp

@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2020, Stephan Unverwerth <s.unverwerth@serenityos.org>
+ * Copyright (c) 2021-2022, David Tuin <davidot@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <AK/StringView.h>
+#include <AK/Vector.h>
+#include <LibJS/ParserError.h>
+#include <LibJS/Token.h>
+
+namespace JS {
+
+String ParserError::to_string() const
+{
+    if (!position.has_value())
+        return MUST(String::from_byte_string(message));
+    return MUST(String::formatted("{} (line: {}, column: {})", message, position.value().line, position.value().column));
+}
+
+ByteString ParserError::to_byte_string() const
+{
+    if (!position.has_value())
+        return message;
+    return ByteString::formatted("{} (line: {}, column: {})", message, position.value().line, position.value().column);
+}
+
+ByteString ParserError::source_location_hint(StringView source, char const spacer, char const indicator) const
+{
+    if (!position.has_value())
+        return {};
+    // We need to modify the source to match what the lexer considers one line - normalizing
+    // line terminators to \n is easier than splitting using all different LT characters.
+    ByteString source_string = source.replace("\r\n"sv, "\n"sv, ReplaceMode::All).replace("\r"sv, "\n"sv, ReplaceMode::All).replace(LINE_SEPARATOR_STRING, "\n"sv, ReplaceMode::All).replace(PARAGRAPH_SEPARATOR_STRING, "\n"sv, ReplaceMode::All);
+    StringBuilder builder;
+    builder.append(source_string.split_view('\n', SplitBehavior::KeepEmpty)[position.value().line - 1]);
+    builder.append('\n');
+    for (size_t i = 0; i < position.value().column - 1; ++i)
+        builder.append(spacer);
+    builder.append(indicator);
+    return builder.to_byte_string();
+}
+
+}