Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 57 insertions, 0 deletions

diff --git a/js/src/util/Identifier.h b/js/src/util/Identifier.h
new file mode 100644
index 0000000000..1deb407571
--- /dev/null
+++ b/js/src/util/Identifier.h
@@ -0,0 +1,57 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef util_Identifier_h
+#define util_Identifier_h
+
+#include <stddef.h>  // size_t
+
+#include "js/TypeDecls.h"  // JS::Latin1Char
+
+class JSLinearString;
+
+namespace js {
+
+/*
+ * True if str consists of an IdentifierStart character, followed by one or
+ * more IdentifierPart characters, i.e. it matches the IdentifierName production
+ * in the language spec.
+ *
+ * This returns true even if str is a keyword like "if".
+ */
+bool IsIdentifier(JSLinearString* str);
+
+/*
+ * As above, but taking chars + length.
+ */
+bool IsIdentifier(const JS::Latin1Char* chars, size_t length);
+bool IsIdentifier(const char16_t* chars, size_t length);
+
+/*
+ * ASCII variant with known length.
+ */
+bool IsIdentifierASCII(char c);
+bool IsIdentifierASCII(char c1, char c2);
+
+/*
+ * True if str consists of an optional leading '#', followed by an
+ * IdentifierStart character, followed by one or more IdentifierPart characters,
+ * i.e. it matches the IdentifierName production or PrivateIdentifier production
+ * in the language spec.
+ *
+ * This returns true even if str is a keyword like "if".
+ */
+bool IsIdentifierNameOrPrivateName(JSLinearString* str);
+
+/*
+ * As above, but taking chars + length.
+ */
+bool IsIdentifierNameOrPrivateName(const JS::Latin1Char* chars, size_t length);
+bool IsIdentifierNameOrPrivateName(const char16_t* chars, size_t length);
+
+} /* namespace js */
+
+#endif /* util_Identifier_h */