Issue #1677 - Part 3: Create shim definitions for V8-specific code in new regexp implementation

1 files changed, 72 insertions, 0 deletions

diff --git a/js/src/regexp/regexp-shim.cc b/js/src/regexp/regexp-shim.cc
new file mode 100644
index 000000000..5e1da7a60
--- /dev/null
+++ b/js/src/regexp/regexp-shim.cc
@@ -0,0 +1,72 @@
+/* -*- 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/. */
+
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "regexp/regexp-shim.h"
+
+namespace v8 {
+namespace internal {
+
+void PrintF(const char* format, ...) {
+  va_list arguments;
+  va_start(arguments, format);
+  vprintf(format, arguments);
+  va_end(arguments);
+}
+
+void PrintF(FILE* out, const char* format, ...) {
+  va_list arguments;
+  va_start(arguments, format);
+  vfprintf(out, format, arguments);
+  va_end(arguments);
+}
+
+// Origin:
+// https://github.com/v8/v8/blob/855591a54d160303349a5f0a32fab15825c708d1/src/utils/ostreams.cc#L120-L169
+// (This is a hand-simplified version.)
+// Writes the given character to the output escaping everything outside
+// of printable ASCII range.
+std::ostream& operator<<(std::ostream& os, const AsUC16& c) {
+  uint16_t v = c.value;
+  bool isPrint = 0x20 < v && v <= 0x7e;
+  char buf[10];
+  const char* format = isPrint ? "%c" : (v <= 0xFF) ? "\\x%02x" : "\\u%04x";
+  snprintf(buf, sizeof(buf), format, v);
+  return os << buf;
+}
+std::ostream& operator<<(std::ostream& os, const AsUC32& c) {
+  int32_t v = c.value;
+  if (v <= String::kMaxUtf16CodeUnit) {
+    return os << AsUC16(v);
+  }
+  char buf[13];
+  snprintf(buf, sizeof(buf), "\\u{%06x}", v);
+  return os << buf;
+}
+
+DisallowJavascriptExecution::DisallowJavascriptExecution(Isolate* isolate)
+    : nojs_(isolate->cx()) {}
+
+// TODO: Map flags to jitoptions
+bool FLAG_correctness_fuzzer_suppressions = false;
+bool FLAG_enable_regexp_unaligned_accesses = false;
+bool FLAG_harmony_regexp_sequence = false;
+bool FLAG_regexp_interpret_all = false;
+bool FLAG_regexp_mode_modifiers = false;
+bool FLAG_regexp_optimization = false;
+bool FLAG_regexp_peephole_optimization = false;
+bool FLAG_regexp_possessive_quantifier = false;
+bool FLAG_regexp_tier_up = false;
+bool FLAG_trace_regexp_assembler = false;
+bool FLAG_trace_regexp_bytecodes = false;
+bool FLAG_trace_regexp_parser = false;
+bool FLAG_trace_regexp_peephole_optimization = false;
+
+}  // namespace internal
+}  // namespace v8