https://github.com/kadircet created
https://github.com/llvm/llvm-project/pull/68329
None
From 5603c6ee481332f82c8ec1589e3e1610c570526d Mon Sep 17 00:00:00 2001
From: Kadir Cetinkaya <kadir...@google.com>
Date: Thu, 5 Oct 2023 16:55:17 +0200
Subject: [PATCH 1/2] [clang][USR] Encode full decl-context also for anon
namespaces
---
clang/lib/Index/USRGeneration.cpp | 9 +++++----
clang/test/Index/USR/decl-context.cpp | 14 ++++++++++++++
2 files changed, 19 insertions(+), 4 deletions(-)
create mode 100644 clang/test/Index/USR/decl-context.cpp
diff --git a/clang/lib/Index/USRGeneration.cpp
b/clang/lib/Index/USRGeneration.cpp
index f778a6208d5122d..614f5d8d2cad520 100644
--- a/clang/lib/Index/USRGeneration.cpp
+++ b/clang/lib/Index/USRGeneration.cpp
@@ -9,6 +9,7 @@
#include "clang/Index/USRGeneration.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/Attr.h"
+#include "clang/AST/DeclCXX.h"
#include "clang/AST/DeclTemplate.h"
#include "clang/AST/DeclVisitor.h"
#include "clang/Basic/FileManager.h"
@@ -368,14 +369,14 @@ void USRGenerator::VisitTemplateTemplateParmDecl(
}
void USRGenerator::VisitNamespaceDecl(const NamespaceDecl *D) {
+ if (IgnoreResults)
+ return;
+ VisitDeclContext(D->getDeclContext());
if (D->isAnonymousNamespace()) {
Out << "@aN";
return;
}
-
- VisitDeclContext(D->getDeclContext());
- if (!IgnoreResults)
- Out << "@N@" << D->getName();
+ Out << "@N@" << D->getName();
}
void USRGenerator::VisitFunctionTemplateDecl(const FunctionTemplateDecl *D) {
diff --git a/clang/test/Index/USR/decl-context.cpp
b/clang/test/Index/USR/decl-context.cpp
new file mode 100644
index 000000000000000..a57137a5c89b5fd
--- /dev/null
+++ b/clang/test/Index/USR/decl-context.cpp
@@ -0,0 +1,14 @@
+// RUN: c-index-test core -print-source-symbols -- -std=c++20 %s | FileCheck %s
+
+namespace ns {
+namespace {
+struct Foo {};
+// CHECK: [[@LINE-1]]:8 | struct/C | Foo | c:decl-context.cpp@N@ns@aN@S@Foo
+}
+}
+namespace ns2 {
+namespace {
+struct Foo {};
+// CHECK: [[@LINE-1]]:8 | struct/C | Foo | c:decl-context.cpp@N@ns2@aN@S@Foo
+}
+}
From 44a0c88778e5fea419838b2fae1ccd92dab696f5 Mon Sep 17 00:00:00 2001
From: Kadir Cetinkaya <kadir...@google.com>
Date: Thu, 5 Oct 2023 18:05:11 +0200
Subject: [PATCH 2/2] [clang][Index] Improve USR generation for using-decls
Make sure we include filename and namespace for the target declarations.
---
.../clangd/unittests/SymbolInfoTests.cpp | 2 +-
clang/lib/Index/USRGeneration.cpp | 27 +++++++++++++------
clang/test/Index/USR/using-decl.cpp | 16 +++++++++++
clang/test/Index/using_if_exists.cpp | 2 +-
clang/test/Index/usrs.cpp | 2 +-
5 files changed, 38 insertions(+), 11 deletions(-)
create mode 100644 clang/test/Index/USR/using-decl.cpp
diff --git a/clang-tools-extra/clangd/unittests/SymbolInfoTests.cpp
b/clang-tools-extra/clangd/unittests/SymbolInfoTests.cpp
index 6c91f3783a6220a..64c8834ab2e95bc 100644
--- a/clang-tools-extra/clangd/unittests/SymbolInfoTests.cpp
+++ b/clang-tools-extra/clangd/unittests/SymbolInfoTests.cpp
@@ -202,7 +202,7 @@ TEST(SymbolInfoTests, All) {
"def_bool"},
ExpectedSymbolDetails{"foo", "", "c:@F@foo#I#", "def_int",
"def_int"},
- ExpectedSymbolDetails{"foo", "bar::", "c:@N@bar@UD@foo",
+ ExpectedSymbolDetails{"foo", "bar::",
"c:TestTU.cpp@N@bar@UD@foo",
"decl"}}},
{
R"cpp( // Multiple symbols returned - implicit conversion
diff --git a/clang/lib/Index/USRGeneration.cpp
b/clang/lib/Index/USRGeneration.cpp
index 614f5d8d2cad520..5a409f34242ecd1 100644
--- a/clang/lib/Index/USRGeneration.cpp
+++ b/clang/lib/Index/USRGeneration.cpp
@@ -114,14 +114,7 @@ class USRGenerator : public ConstDeclVisitor<USRGenerator>
{
IgnoreResults = true;
}
- void VisitUsingDecl(const UsingDecl *D) {
- VisitDeclContext(D->getDeclContext());
- Out << "@UD@";
-
- bool EmittedDeclName = !EmitDeclName(D);
- assert(EmittedDeclName && "EmitDeclName can not fail for UsingDecls");
- (void)EmittedDeclName;
- }
+ void VisitBaseUsingDecl(const BaseUsingDecl *D);
bool ShouldGenerateLocation(const NamedDecl *D);
@@ -1070,6 +1063,24 @@ void USRGenerator::VisitMSGuidDecl(const MSGuidDecl *D) {
D->NamedDecl::printName(Out);
}
+void USRGenerator::VisitBaseUsingDecl(const BaseUsingDecl *D) {
+ // Add the filename when needed to disambiguate using decls from different
+ // files.
+ if (ShouldGenerateLocation(D) && GenLoc(D, /*IncludeOffset=*/false))
+ return;
+ VisitDeclContext(D->getDeclContext());
+ Out << "@UD";
+
+ // When the using-decl is resolved also print the context of the first target
+ // decl. All shadows must be from the same decl-context.
+ if (auto FirstShadow = D->shadow_begin(); FirstShadow != D->shadow_end())
+ VisitDeclContext(FirstShadow->getTargetDecl()->getDeclContext());
+ Out << "@";
+ bool EmittedDeclName = !EmitDeclName(D);
+ assert(EmittedDeclName && "EmitDeclName can not fail for UsingDecls");
+ (void)EmittedDeclName;
+}
+
//===----------------------------------------------------------------------===//
// USR generation functions.
//===----------------------------------------------------------------------===//
diff --git a/clang/test/Index/USR/using-decl.cpp
b/clang/test/Index/USR/using-decl.cpp
new file mode 100644
index 000000000000000..91a4a8f7946cd61
--- /dev/null
+++ b/clang/test/Index/USR/using-decl.cpp
@@ -0,0 +1,16 @@
+// RUN: c-index-test core -print-source-symbols -- -std=c++20 %s | FileCheck %s
+
+namespace ns { void foo(); }
+namespace ns2 { void foo(int); }
+
+namespace exporting {
+namespace {
+using ns::foo;
+// CHECK: [[@LINE-1]]:11 | using/C++ | foo |
c:using-decl.cpp@N@exporting@aN@UD@N@ns@foo
+using ::ns::foo;
+// CHECK: [[@LINE-1]]:13 | using/C++ | foo |
c:using-decl.cpp@N@exporting@aN@UD@N@ns@foo
+// FIXME: Also put the qualified name for the target decl
+using ns2::foo;
+// CHECK: [[@LINE-1]]:12 | using/C++ | foo |
c:using-decl.cpp@N@exporting@aN@UD@N@ns2@foo
+}
+}
diff --git a/clang/test/Index/using_if_exists.cpp
b/clang/test/Index/using_if_exists.cpp
index 73d1be739e42816..339d7fa233d68bd 100644
--- a/clang/test/Index/using_if_exists.cpp
+++ b/clang/test/Index/using_if_exists.cpp
@@ -6,5 +6,5 @@ namespace ns {
}
using ns::foo __attribute__((using_if_exists));
-// CHECK: [[@LINE-1]]:11 | using/C++ | foo | c:@UD@foo | <no-cgname> | Decl |
rel: 0
+// CHECK: [[@LINE-1]]:11 | using/C++ | foo | c:using_if_exists.cpp@UD@foo |
<no-cgname> | Decl | rel: 0
// CHECK-NOT: <unknown>
diff --git a/clang/test/Index/usrs.cpp b/clang/test/Index/usrs.cpp
index dbfa44f4b676489..08b9c6f60bd8cc8 100644
--- a/clang/test/Index/usrs.cpp
+++ b/clang/test/Index/usrs.cpp
@@ -158,7 +158,7 @@ __m128 vectorOverload(__m128 f);
// CHECK: usrs.cpp c:@NA@foo_alias
// CHECK-NOT: foo
// CHECK: usrs.cpp c:@NA@foo_alias2
-// CHECK: usrs.cpp c:@UD@ClsB Extent=[64:1 - 64:16]
+// CHECK: usrs.cpp c:usrs.cpp@UD@N@foo@ClsB Extent=[64:1 - 64:16]
// CHECK: usrs.cpp c:@NA@foo_alias3
// CHECK: usrs.cpp c:@aN Extent=[68:1 - 73:2]
// CHECK: usrs.cpp c:usrs.cpp@aN@S@RDar9371763_Foo Extent=[69:1 - 72:2]
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