From bb0840c0025a75dd3b85b746ebcec7deb7d9fe1c Mon Sep 17 00:00:00 2001
From: iddqd <iddqd@yandex-team.com>
Date: Thu, 19 Dec 2024 10:46:06 +0300
Subject: Add contib/libs/breakpad to export
commit_hash:9d85255f8d9249f14105e4626bf4484805b8aed4
---
contrib/libs/breakpad/src/common/language.cc | 220 +++++++++++++++++++++++++++
1 file changed, 220 insertions(+)
create mode 100644 contrib/libs/breakpad/src/common/language.cc
(limited to 'contrib/libs/breakpad/src/common/language.cc')
diff --git a/contrib/libs/breakpad/src/common/language.cc b/contrib/libs/breakpad/src/common/language.cc
new file mode 100644
index 0000000000..bee812408d
--- /dev/null
+++ b/contrib/libs/breakpad/src/common/language.cc
@@ -0,0 +1,220 @@
+// Copyright (c) 2010 Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
+
+// language.cc: Subclasses and singletons for google_breakpad::Language.
+// See language.h for details.
+
+#include "common/language.h"
+
+#include <stdlib.h>
+#include <array>
+
+#if !defined(__ANDROID__)
+#include <cxxabi.h>
+#endif
+
+#if defined(HAVE_RUSTC_DEMANGLE)
+#error #include <rustc_demangle.h>
+#endif
+
+#include <limits>
+
+namespace {
+
+string MakeQualifiedNameWithSeparator(const string& parent_name,
+ const char* separator,
+ const string& name) {
+ if (parent_name.empty()) {
+ return name;
+ }
+
+ return parent_name + separator + name;
+}
+
+} // namespace
+
+namespace google_breakpad {
+
+// C++ language-specific operations.
+class CPPLanguage: public Language {
+ public:
+ CPPLanguage() {}
+
+ string MakeQualifiedName(const string& parent_name,
+ const string& name) const {
+ return MakeQualifiedNameWithSeparator(parent_name, "::", name);
+ }
+
+ virtual DemangleResult DemangleName(const string& mangled,
+ string* demangled) const {
+#if defined(__ANDROID__)
+ // Android NDK doesn't provide abi::__cxa_demangle.
+ demangled->clear();
+ return kDontDemangle;
+#else
+ // Attempting to demangle non-C++ symbols with the C++ demangler would print
+ // warnings and fail, so return kDontDemangle for these.
+ if (!IsMangledName(mangled)) {
+ demangled->clear();
+ return kDontDemangle;
+ }
+
+ int status;
+ char* demangled_c =
+ abi::__cxa_demangle(mangled.c_str(), NULL, NULL, &status);
+
+ DemangleResult result;
+ if (status == 0) {
+ result = kDemangleSuccess;
+ demangled->assign(demangled_c);
+ } else {
+ result = kDemangleFailure;
+ demangled->clear();
+ }
+
+ if (demangled_c) {
+ free(reinterpret_cast<void*>(demangled_c));
+ }
+
+ return result;
+#endif
+ }
+
+ private:
+ static bool IsMangledName(const string& name) {
+ // NOTE: For proper cross-compilation support, this should depend on target
+ // binary's platform, not current build platform.
+#if defined(__APPLE__)
+ // Mac C++ symbols can have up to 4 underscores, followed by a "Z".
+ // Non-C++ symbols are not coded that way, but may have leading underscores.
+ size_t i = name.find_first_not_of('_');
+ return i > 0 && i != string::npos && i <= 4 && name[i] == 'Z';
+#else
+ // Linux C++ symbols always start with "_Z".
+ return name.size() > 2 && name[0] == '_' && name[1] == 'Z';
+#endif
+ }
+};
+
+CPPLanguage CPPLanguageSingleton;
+
+// Java language-specific operations.
+class JavaLanguage: public Language {
+ public:
+ JavaLanguage() {}
+
+ string MakeQualifiedName(const string& parent_name,
+ const string& name) const {
+ return MakeQualifiedNameWithSeparator(parent_name, ".", name);
+ }
+};
+
+JavaLanguage JavaLanguageSingleton;
+
+// Swift language-specific operations.
+class SwiftLanguage: public Language {
+ public:
+ SwiftLanguage() {}
+
+ string MakeQualifiedName(const string& parent_name,
+ const string& name) const {
+ return MakeQualifiedNameWithSeparator(parent_name, ".", name);
+ }
+
+ virtual DemangleResult DemangleName(const string& mangled,
+ string* demangled) const {
+ // There is no programmatic interface to a Swift demangler. Pass through the
+ // mangled form because it encodes more information than the qualified name
+ // that would have been built by MakeQualifiedName(). The output can be
+ // post-processed by xcrun swift-demangle to transform mangled Swift names
+ // into something more readable.
+ demangled->assign(mangled);
+ return kDemangleSuccess;
+ }
+};
+
+SwiftLanguage SwiftLanguageSingleton;
+
+// Rust language-specific operations.
+class RustLanguage: public Language {
+ public:
+ RustLanguage() {}
+
+ string MakeQualifiedName(const string& parent_name,
+ const string& name) const {
+ return MakeQualifiedNameWithSeparator(parent_name, ".", name);
+ }
+
+ virtual DemangleResult DemangleName(const string& mangled,
+ string* demangled) const {
+ // Rust names use GCC C++ name mangling, but demangling them with
+ // abi_demangle doesn't produce stellar results due to them having
+ // another layer of encoding.
+ // If callers provide rustc-demangle, use that.
+#if defined(HAVE_RUSTC_DEMANGLE)
+ std::array<char, 1 * 1024 * 1024> rustc_demangled;
+ if (rustc_demangle(mangled.c_str(), rustc_demangled.data(),
+ rustc_demangled.size()) == 0) {
+ return kDemangleFailure;
+ }
+ demangled->assign(rustc_demangled.data());
+#else
+ // Otherwise, pass through the mangled name so callers can demangle
+ // after the fact.
+ demangled->assign(mangled);
+#endif
+ return kDemangleSuccess;
+ }
+};
+
+RustLanguage RustLanguageSingleton;
+
+// Assembler language-specific operations.
+class AssemblerLanguage: public Language {
+ public:
+ AssemblerLanguage() {}
+
+ bool HasFunctions() const { return false; }
+ string MakeQualifiedName(const string& parent_name,
+ const string& name) const {
+ return name;
+ }
+};
+
+AssemblerLanguage AssemblerLanguageSingleton;
+
+const Language * const Language::CPlusPlus = &CPPLanguageSingleton;
+const Language * const Language::Java = &JavaLanguageSingleton;
+const Language * const Language::Swift = &SwiftLanguageSingleton;
+const Language * const Language::Rust = &RustLanguageSingleton;
+const Language * const Language::Assembler = &AssemblerLanguageSingleton;
+
+} // namespace google_breakpad
--
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