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| //===-- RichManglingContextTest.cpp -----------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "lldb/Core/RichManglingContext.h"
#include "lldb/Utility/ConstString.h"
#include "gtest/gtest.h"
using namespace lldb;
using namespace lldb_private;
TEST(RichManglingContextTest, Basic) {
RichManglingContext RMC;
ConstString mangled("_ZN3foo3barEv");
EXPECT_TRUE(RMC.FromItaniumName(mangled));
EXPECT_TRUE(RMC.IsFunction());
EXPECT_FALSE(RMC.IsCtorOrDtor());
RMC.ParseFunctionDeclContextName();
EXPECT_EQ("foo", RMC.GetBufferRef());
RMC.ParseFunctionBaseName();
EXPECT_EQ("bar", RMC.GetBufferRef());
RMC.ParseFullName();
EXPECT_EQ("foo::bar()", RMC.GetBufferRef());
}
TEST(RichManglingContextTest, FromCxxMethodName) {
RichManglingContext ItaniumRMC;
ConstString mangled("_ZN3foo3barEv");
EXPECT_TRUE(ItaniumRMC.FromItaniumName(mangled));
RichManglingContext CxxMethodRMC;
ConstString demangled("foo::bar()");
EXPECT_TRUE(CxxMethodRMC.FromCxxMethodName(demangled));
EXPECT_TRUE(ItaniumRMC.IsFunction() == CxxMethodRMC.IsFunction());
EXPECT_TRUE(ItaniumRMC.IsCtorOrDtor() == CxxMethodRMC.IsCtorOrDtor());
ItaniumRMC.ParseFunctionDeclContextName();
CxxMethodRMC.ParseFunctionDeclContextName();
EXPECT_TRUE(ItaniumRMC.GetBufferRef() == CxxMethodRMC.GetBufferRef());
ItaniumRMC.ParseFunctionBaseName();
CxxMethodRMC.ParseFunctionBaseName();
EXPECT_TRUE(ItaniumRMC.GetBufferRef() == CxxMethodRMC.GetBufferRef());
ItaniumRMC.ParseFullName();
CxxMethodRMC.ParseFullName();
EXPECT_TRUE(ItaniumRMC.GetBufferRef() == CxxMethodRMC.GetBufferRef());
// Construct with a random name.
{
RichManglingContext CxxMethodRMC;
EXPECT_TRUE(CxxMethodRMC.FromCxxMethodName(ConstString("X")));
// We expect it is not a function.
EXPECT_FALSE(CxxMethodRMC.IsFunction());
}
// Construct with a function without a context.
{
RichManglingContext CxxMethodRMC;
EXPECT_TRUE(CxxMethodRMC.FromCxxMethodName(
ConstString("void * operator new(unsigned __int64)")));
// We expect it is a function.
EXPECT_TRUE(CxxMethodRMC.IsFunction());
// We expect its context is empty.
CxxMethodRMC.ParseFunctionDeclContextName();
EXPECT_TRUE(CxxMethodRMC.GetBufferRef().empty());
}
}
TEST(RichManglingContextTest, SwitchProvider) {
RichManglingContext RMC;
llvm::StringRef mangled = "_ZN3foo3barEv";
llvm::StringRef demangled = "foo::bar()";
EXPECT_TRUE(RMC.FromItaniumName(ConstString(mangled)));
RMC.ParseFullName();
EXPECT_EQ("foo::bar()", RMC.GetBufferRef());
EXPECT_TRUE(RMC.FromCxxMethodName(ConstString(demangled)));
RMC.ParseFullName();
EXPECT_EQ("foo::bar()", RMC.GetBufferRef());
EXPECT_TRUE(RMC.FromItaniumName(ConstString(mangled)));
RMC.ParseFullName();
EXPECT_EQ("foo::bar()", RMC.GetBufferRef());
}
TEST(RichManglingContextTest, IPDRealloc) {
// The demangled name should fit into the Itanium default buffer.
const char *ShortMangled = "_ZN3foo3barEv";
// The demangled name for this will certainly not fit into the default buffer.
const char *LongMangled =
"_ZNK3shk6detail17CallbackPublisherIZNS_5ThrowERKNSt15__exception_"
"ptr13exception_ptrEEUlOT_E_E9SubscribeINS0_9ConcatMapINS0_"
"18CallbackSubscriberIZNS_6GetAllIiNS1_IZZNS_9ConcatMapIZNS_6ConcatIJNS1_"
"IZZNS_3MapIZZNS_7IfEmptyIS9_EEDaS7_ENKUlS6_E_clINS1_IZZNS_4TakeIiEESI_"
"S7_ENKUlS6_E_clINS1_IZZNS_6FilterIZNS_9ElementAtEmEUlS7_E_EESI_S7_"
"ENKUlS6_E_clINS1_IZZNSL_ImEESI_S7_ENKUlS6_E_clINS1_IZNS_4FromINS0_"
"22InfiniteRangeContainerIiEEEESI_S7_EUlS7_E_EEEESI_S6_EUlS7_E_EEEESI_S6_"
"EUlS7_E_EEEESI_S6_EUlS7_E_EEEESI_S6_EUlS7_E_EESI_S7_ENKUlS6_E_clIS14_"
"EESI_S6_EUlS7_E_EERNS1_IZZNSH_IS9_EESI_S7_ENKSK_IS14_EESI_S6_EUlS7_E0_"
"EEEEESI_DpOT_EUlS7_E_EESI_S7_ENKUlS6_E_clINS1_IZNS_5StartIJZNS_"
"4JustIJS19_S1C_EEESI_S1F_EUlvE_ZNS1K_IJS19_S1C_EEESI_S1F_EUlvE0_EEESI_"
"S1F_EUlS7_E_EEEESI_S6_EUlS7_E_EEEESt6vectorIS6_SaIS6_EERKT0_NS_"
"12ElementCountEbEUlS7_E_ZNSD_IiS1Q_EES1T_S1W_S1X_bEUlOS3_E_ZNSD_IiS1Q_"
"EES1T_S1W_S1X_bEUlvE_EES1G_S1O_E25ConcatMapValuesSubscriberEEEDaS7_";
RichManglingContext RMC;
// Demangle the short one.
EXPECT_TRUE(RMC.FromItaniumName(ConstString(ShortMangled)));
RMC.ParseFullName();
const char *ShortDemangled = RMC.GetBufferRef().data();
// Demangle the long one.
EXPECT_TRUE(RMC.FromItaniumName(ConstString(LongMangled)));
RMC.ParseFullName();
const char *LongDemangled = RMC.GetBufferRef().data();
// Make sure a new buffer was allocated or the default buffer was extended.
bool AllocatedNewBuffer = (ShortDemangled != LongDemangled);
bool ExtendedExistingBuffer = (strlen(LongDemangled) > 2048);
EXPECT_TRUE(AllocatedNewBuffer || ExtendedExistingBuffer);
}
|