1 //===-- RichManglingContextTest.cpp -----------------------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "lldb/Core/RichManglingContext.h"
11 
12 #include "lldb/Utility/ConstString.h"
13 
14 #include "gtest/gtest.h"
15 
16 using namespace lldb;
17 using namespace lldb_private;
18 
19 TEST(RichManglingContextTest, Basic) {
20   RichManglingContext RMC;
21   ConstString mangled("_ZN3foo3barEv");
22   EXPECT_TRUE(RMC.FromItaniumName(mangled));
23 
24   EXPECT_TRUE(RMC.IsFunction());
25   EXPECT_FALSE(RMC.IsCtorOrDtor());
26 
27   RMC.ParseFunctionDeclContextName();
28   EXPECT_EQ("foo", RMC.GetBufferRef());
29 
30   RMC.ParseFunctionBaseName();
31   EXPECT_EQ("bar", RMC.GetBufferRef());
32 
33   RMC.ParseFullName();
34   EXPECT_EQ("foo::bar()", RMC.GetBufferRef());
35 }
36 
37 TEST(RichManglingContextTest, FromCxxMethodName) {
38   RichManglingContext ItaniumRMC;
39   ConstString mangled("_ZN3foo3barEv");
40   EXPECT_TRUE(ItaniumRMC.FromItaniumName(mangled));
41 
42   RichManglingContext CxxMethodRMC;
43   ConstString demangled("foo::bar()");
44   EXPECT_TRUE(CxxMethodRMC.FromCxxMethodName(demangled));
45 
46   EXPECT_TRUE(ItaniumRMC.IsFunction() == CxxMethodRMC.IsFunction());
47   EXPECT_TRUE(ItaniumRMC.IsCtorOrDtor() == CxxMethodRMC.IsCtorOrDtor());
48 
49   ItaniumRMC.ParseFunctionDeclContextName();
50   CxxMethodRMC.ParseFunctionDeclContextName();
51   EXPECT_TRUE(ItaniumRMC.GetBufferRef() == CxxMethodRMC.GetBufferRef());
52 
53   ItaniumRMC.ParseFunctionBaseName();
54   CxxMethodRMC.ParseFunctionBaseName();
55   EXPECT_TRUE(ItaniumRMC.GetBufferRef() == CxxMethodRMC.GetBufferRef());
56 
57   ItaniumRMC.ParseFullName();
58   CxxMethodRMC.ParseFullName();
59   EXPECT_TRUE(ItaniumRMC.GetBufferRef() == CxxMethodRMC.GetBufferRef());
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   RMC.ParseFullName();
69   EXPECT_EQ("foo::bar()", RMC.GetBufferRef());
70 
71   EXPECT_TRUE(RMC.FromCxxMethodName(ConstString(demangled)));
72   RMC.ParseFullName();
73   EXPECT_EQ("foo::bar()", RMC.GetBufferRef());
74 
75   EXPECT_TRUE(RMC.FromItaniumName(ConstString(mangled)));
76   RMC.ParseFullName();
77   EXPECT_EQ("foo::bar()", RMC.GetBufferRef());
78 }
79 
80 TEST(RichManglingContextTest, IPDRealloc) {
81   // The demangled name should fit into the Itanium default buffer.
82   const char *ShortMangled = "_ZN3foo3barEv";
83 
84   // The demangled name for this will certainly not fit into the default buffer.
85   const char *LongMangled =
86       "_ZNK3shk6detail17CallbackPublisherIZNS_5ThrowERKNSt15__exception_"
87       "ptr13exception_ptrEEUlOT_E_E9SubscribeINS0_9ConcatMapINS0_"
88       "18CallbackSubscriberIZNS_6GetAllIiNS1_IZZNS_9ConcatMapIZNS_6ConcatIJNS1_"
89       "IZZNS_3MapIZZNS_7IfEmptyIS9_EEDaS7_ENKUlS6_E_clINS1_IZZNS_4TakeIiEESI_"
90       "S7_ENKUlS6_E_clINS1_IZZNS_6FilterIZNS_9ElementAtEmEUlS7_E_EESI_S7_"
91       "ENKUlS6_E_clINS1_IZZNSL_ImEESI_S7_ENKUlS6_E_clINS1_IZNS_4FromINS0_"
92       "22InfiniteRangeContainerIiEEEESI_S7_EUlS7_E_EEEESI_S6_EUlS7_E_EEEESI_S6_"
93       "EUlS7_E_EEEESI_S6_EUlS7_E_EEEESI_S6_EUlS7_E_EESI_S7_ENKUlS6_E_clIS14_"
94       "EESI_S6_EUlS7_E_EERNS1_IZZNSH_IS9_EESI_S7_ENKSK_IS14_EESI_S6_EUlS7_E0_"
95       "EEEEESI_DpOT_EUlS7_E_EESI_S7_ENKUlS6_E_clINS1_IZNS_5StartIJZNS_"
96       "4JustIJS19_S1C_EEESI_S1F_EUlvE_ZNS1K_IJS19_S1C_EEESI_S1F_EUlvE0_EEESI_"
97       "S1F_EUlS7_E_EEEESI_S6_EUlS7_E_EEEESt6vectorIS6_SaIS6_EERKT0_NS_"
98       "12ElementCountEbEUlS7_E_ZNSD_IiS1Q_EES1T_S1W_S1X_bEUlOS3_E_ZNSD_IiS1Q_"
99       "EES1T_S1W_S1X_bEUlvE_EES1G_S1O_E25ConcatMapValuesSubscriberEEEDaS7_";
100 
101   RichManglingContext RMC;
102 
103   // Demangle the short one.
104   EXPECT_TRUE(RMC.FromItaniumName(ConstString(ShortMangled)));
105   RMC.ParseFullName();
106   const char *ShortDemangled = RMC.GetBufferRef().data();
107 
108   // Demangle the long one.
109   EXPECT_TRUE(RMC.FromItaniumName(ConstString(LongMangled)));
110   RMC.ParseFullName();
111   const char *LongDemangled = RMC.GetBufferRef().data();
112 
113   // Make sure a new buffer was allocated or the default buffer was extended.
114   bool AllocatedNewBuffer = (ShortDemangled != LongDemangled);
115   bool ExtendedExistingBuffer = (strlen(LongDemangled) > 2048);
116   EXPECT_TRUE(AllocatedNewBuffer || ExtendedExistingBuffer);
117 }
118