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[Clang][Index] Add support for dependent class scope explicit specializations of function templates to USRGenerator #98027

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Jul 8, 2024
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[Clang][Index] Add support for dependent class scope explicit specializations of function templates to USRGenerator #98027

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18 changes: 13 additions & 5 deletions clang/lib/Index/USRGeneration.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -257,12 +257,20 @@ void USRGenerator::VisitFunctionDecl(const FunctionDecl *D) {
!D->hasAttr<OverloadableAttr>())
return;

if (const TemplateArgumentList *
SpecArgs = D->getTemplateSpecializationArgs()) {
if (D->isFunctionTemplateSpecialization()) {
Out << '<';
for (unsigned I = 0, N = SpecArgs->size(); I != N; ++I) {
Out << '#';
VisitTemplateArgument(SpecArgs->get(I));
if (const TemplateArgumentList *SpecArgs =
D->getTemplateSpecializationArgs()) {
for (const auto &Arg : SpecArgs->asArray()) {
Out << '#';
VisitTemplateArgument(Arg);
}
} else if (const ASTTemplateArgumentListInfo *SpecArgsWritten =
D->getTemplateSpecializationArgsAsWritten()) {
for (const auto &ArgLoc : SpecArgsWritten->arguments()) {
Out << '#';
VisitTemplateArgument(ArgLoc.getArgument());
}
}
Out << '>';
}
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15 changes: 15 additions & 0 deletions clang/test/Index/USR/func-template.cpp
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Original file line number Diff line number Diff line change
@@ -0,0 +1,15 @@
// RUN: c-index-test core -print-source-symbols -- %s | FileCheck %s

template<typename T>
struct A {
void f(int);
// CHECK: {{[0-9]+}}:8 | instance-method/C++ | f | c:@ST>1#T@A@F@f#I# |

template<typename U>
void f(U);
// CHECK: {{[0-9]+}}:8 | instance-method/C++ | f | c:@ST>1#T@A@FT@>1#Tf#t1.0#v# |

template<>
void f<int>(int);
// CHECK: {{[0-9]+}}:8 | instance-method/C++ | f | c:@ST>1#T@A@F@f<#I>#I# |
};
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