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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /js/src/frontend/LabelEmitter.cpp
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/frontend/LabelEmitter.cpp')
-rw-r--r--js/src/frontend/LabelEmitter.cpp40
1 files changed, 40 insertions, 0 deletions
diff --git a/js/src/frontend/LabelEmitter.cpp b/js/src/frontend/LabelEmitter.cpp
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+/* -*- 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/. */
+
+#include "frontend/LabelEmitter.h"
+
+#include "mozilla/Assertions.h" // MOZ_ASSERT
+
+#include "frontend/BytecodeEmitter.h" // BytecodeEmitter
+
+using namespace js;
+using namespace js::frontend;
+
+void LabelEmitter::emitLabel(TaggedParserAtomIndex name) {
+ MOZ_ASSERT(state_ == State::Start);
+
+ controlInfo_.emplace(bce_, name, bce_->bytecodeSection().offset());
+
+#ifdef DEBUG
+ state_ = State::Label;
+#endif
+}
+
+bool LabelEmitter::emitEnd() {
+ MOZ_ASSERT(state_ == State::Label);
+
+ // Patch the break/continue to this label.
+ if (!controlInfo_->patchBreaks(bce_)) {
+ return false;
+ }
+
+ controlInfo_.reset();
+
+#ifdef DEBUG
+ state_ = State::End;
+#endif
+ return true;
+}