lldb/unittests/Core/RichManglingContextTest.cpp

   1 //===-- RichManglingContextTest.cpp ---------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "lldb/Core/RichManglingContext.h"
  10
  11 #include "lldb/Utility/ConstString.h"
  12
  13 #include "gtest/gtest.h"
  14
  15 using namespace lldb;
  16 using namespace lldb_private;
  17
  18 TEST(RichManglingContextTest, Basic) {
  19   RichManglingContext RMC;
  20   ConstString mangled("_ZN3foo3barEv");
  21
  22   EXPECT_TRUE(RMC.FromItaniumName(mangled));
  23   EXPECT_FALSE(RMC.IsCtorOrDtor());
  24   EXPECT_EQ("foo", RMC.ParseFunctionDeclContextName());
  25   EXPECT_EQ("bar", RMC.ParseFunctionBaseName());
  26   EXPECT_EQ("foo::bar()", RMC.ParseFullName());
  27 }
  28
  29 TEST(RichManglingContextTest, FromCxxMethodName) {
  30   RichManglingContext ItaniumRMC;
  31   ConstString mangled("_ZN3foo3barEv");
  32   EXPECT_TRUE(ItaniumRMC.FromItaniumName(mangled));
  33
  34   RichManglingContext CxxMethodRMC;
  35   ConstString demangled("foo::bar()");
  36   EXPECT_TRUE(CxxMethodRMC.FromCxxMethodName(demangled));
  37
  38   EXPECT_EQ(ItaniumRMC.IsCtorOrDtor(), CxxMethodRMC.IsCtorOrDtor());
  39   EXPECT_EQ(ItaniumRMC.ParseFunctionDeclContextName(),
  40             CxxMethodRMC.ParseFunctionDeclContextName());
  41   EXPECT_EQ(ItaniumRMC.ParseFunctionBaseName(),
  42             CxxMethodRMC.ParseFunctionBaseName());
  43   EXPECT_EQ(ItaniumRMC.ParseFullName(), CxxMethodRMC.ParseFullName());
  44
  45   // Construct with a random name.
  46   {
  47     RichManglingContext CxxMethodRMC;
  48     EXPECT_TRUE(CxxMethodRMC.FromCxxMethodName(ConstString("X")));
  49   }
  50
  51   // Construct with a function without a context.
  52   {
  53     RichManglingContext CxxMethodRMC;
  54     EXPECT_TRUE(CxxMethodRMC.FromCxxMethodName(
  55         ConstString("void * operator new(unsigned __int64)")));
  56
  57     // We expect its context is empty.
  58     EXPECT_TRUE(CxxMethodRMC.ParseFunctionDeclContextName().empty());
  59   }
  60 }
  61
  62 TEST(RichManglingContextTest, SwitchProvider) {
  63   RichManglingContext RMC;
  64   llvm::StringRef mangled = "_ZN3foo3barEv";
  65   llvm::StringRef demangled = "foo::bar()";
  66
  67   EXPECT_TRUE(RMC.FromItaniumName(ConstString(mangled)));
  68   EXPECT_EQ("foo::bar()", RMC.ParseFullName());
  69
  70   EXPECT_TRUE(RMC.FromCxxMethodName(ConstString(demangled)));
  71   EXPECT_EQ("foo::bar()", RMC.ParseFullName());
  72
  73   EXPECT_TRUE(RMC.FromItaniumName(ConstString(mangled)));
  74   EXPECT_EQ("foo::bar()", RMC.ParseFullName());
  75 }
  76
  77 TEST(RichManglingContextTest, IPDRealloc) {
  78   // The demangled name should fit into the Itanium default buffer.
  79   const char *ShortMangled = "_ZN3foo3barEv";
  80
  81   // The demangled name for this will certainly not fit into the default buffer.
  82   const char *LongMangled =
  83       "_ZNK3shk6detail17CallbackPublisherIZNS_5ThrowERKNSt15__exception_"
  84       "ptr13exception_ptrEEUlOT_E_E9SubscribeINS0_9ConcatMapINS0_"
  85       "18CallbackSubscriberIZNS_6GetAllIiNS1_IZZNS_9ConcatMapIZNS_6ConcatIJNS1_"
  86       "IZZNS_3MapIZZNS_7IfEmptyIS9_EEDaS7_ENKUlS6_E_clINS1_IZZNS_4TakeIiEESI_"
  87       "S7_ENKUlS6_E_clINS1_IZZNS_6FilterIZNS_9ElementAtEmEUlS7_E_EESI_S7_"
  88       "ENKUlS6_E_clINS1_IZZNSL_ImEESI_S7_ENKUlS6_E_clINS1_IZNS_4FromINS0_"
  89       "22InfiniteRangeContainerIiEEEESI_S7_EUlS7_E_EEEESI_S6_EUlS7_E_EEEESI_S6_"
  90       "EUlS7_E_EEEESI_S6_EUlS7_E_EEEESI_S6_EUlS7_E_EESI_S7_ENKUlS6_E_clIS14_"
  91       "EESI_S6_EUlS7_E_EERNS1_IZZNSH_IS9_EESI_S7_ENKSK_IS14_EESI_S6_EUlS7_E0_"
  92       "EEEEESI_DpOT_EUlS7_E_EESI_S7_ENKUlS6_E_clINS1_IZNS_5StartIJZNS_"
  93       "4JustIJS19_S1C_EEESI_S1F_EUlvE_ZNS1K_IJS19_S1C_EEESI_S1F_EUlvE0_EEESI_"
  94       "S1F_EUlS7_E_EEEESI_S6_EUlS7_E_EEEESt6vectorIS6_SaIS6_EERKT0_NS_"
  95       "12ElementCountEbEUlS7_E_ZNSD_IiS1Q_EES1T_S1W_S1X_bEUlOS3_E_ZNSD_IiS1Q_"
  96       "EES1T_S1W_S1X_bEUlvE_EES1G_S1O_E25ConcatMapValuesSubscriberEEEDaS7_";
  97
  98   RichManglingContext RMC;
  99
 100   // Demangle the short one.
 101   EXPECT_TRUE(RMC.FromItaniumName(ConstString(ShortMangled)));
 102   const char *ShortDemangled = RMC.ParseFullName().data();
 103
 104   // Demangle the long one.
 105   EXPECT_TRUE(RMC.FromItaniumName(ConstString(LongMangled)));
 106   const char *LongDemangled = RMC.ParseFullName().data();
 107
 108   // Make sure a new buffer was allocated or the default buffer was extended.
 109   bool AllocatedNewBuffer = (ShortDemangled != LongDemangled);
 110   bool ExtendedExistingBuffer = (strlen(LongDemangled) > 2048);
 111   EXPECT_TRUE(AllocatedNewBuffer || ExtendedExistingBuffer);
 112 }