nridge updated this revision to Diff 279051.
nridge marked 9 inline comments as done.
nridge added a comment.
Address review comments
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D82739/new/
https://reviews.llvm.org/D82739
Files:
clang-tools-extra/clangd/FindTarget.cpp
clang-tools-extra/clangd/unittests/FindTargetTests.cpp
Index: clang-tools-extra/clangd/unittests/FindTargetTests.cpp
===================================================================
--- clang-tools-extra/clangd/unittests/FindTargetTests.cpp
+++ clang-tools-extra/clangd/unittests/FindTargetTests.cpp
@@ -548,6 +548,74 @@
EXPECT_DECLS("UnresolvedMemberExpr", "void func(int *)", "void func(char *)");
}
+TEST_F(TargetDeclTest, DependentExprs) {
+ Flags = {"-fno-delayed-template-parsing"};
+
+ // Heuristic resolution of method of dependent field
+ Code = R"cpp(
+ struct A { void foo() {} };
+ template <typename T>
+ struct B {
+ A a;
+ void bar() {
+ this->a.[[foo]]();
+ }
+ };
+ )cpp";
+ EXPECT_DECLS("CXXDependentScopeMemberExpr", "void foo()");
+
+ // Similar to above but base expression involves a function call.
+ Code = R"cpp(
+ struct A {
+ void foo() {}
+ };
+ struct B {
+ A getA();
+ };
+ template <typename T>
+ struct C {
+ B c;
+ void bar() {
+ this->c.getA().[[foo]]();
+ }
+ };
+ )cpp";
+ EXPECT_DECLS("CXXDependentScopeMemberExpr", "void foo()");
+
+ // Similar to above but uses a function pointer.
+ Code = R"cpp(
+ struct A {
+ void foo() {}
+ };
+ struct B {
+ using FPtr = A(*)();
+ FPtr fptr;
+ };
+ template <typename T>
+ struct C {
+ B c;
+ void bar() {
+ this->c.fptr().[[foo]]();
+ }
+ };
+ )cpp";
+ EXPECT_DECLS("CXXDependentScopeMemberExpr", "void foo()");
+
+ // Base expression involves a member access into this.
+ Code = R"cpp(
+ struct Bar {
+ int aaaa;
+ };
+ template <typename T> struct Foo {
+ Bar func(int);
+ void test() {
+ func(1).[[aaaa]];
+ }
+ };
+ )cpp";
+ EXPECT_DECLS("CXXDependentScopeMemberExpr", "int aaaa");
+}
+
TEST_F(TargetDeclTest, ObjC) {
Flags = {"-xobjective-c"};
Code = R"cpp(
@@ -705,36 +773,37 @@
TEST_F(FindExplicitReferencesTest, All) {
std::pair</*Code*/ llvm::StringRef, /*References*/ llvm::StringRef> Cases[] =
- {// Simple expressions.
- {R"cpp(
+ {
+ // Simple expressions.
+ {R"cpp(
int global;
int func();
void foo(int param) {
$0^global = $1^param + $2^func();
}
)cpp",
- "0: targets = {global}\n"
- "1: targets = {param}\n"
- "2: targets = {func}\n"},
- {R"cpp(
+ "0: targets = {global}\n"
+ "1: targets = {param}\n"
+ "2: targets = {func}\n"},
+ {R"cpp(
struct X { int a; };
void foo(X x) {
$0^x.$1^a = 10;
}
)cpp",
- "0: targets = {x}\n"
- "1: targets = {X::a}\n"},
- {R"cpp(
+ "0: targets = {x}\n"
+ "1: targets = {X::a}\n"},
+ {R"cpp(
// error-ok: testing with broken code
int bar();
int foo() {
return $0^bar() + $1^bar(42);
}
)cpp",
- "0: targets = {bar}\n"
- "1: targets = {bar}\n"},
- // Namespaces and aliases.
- {R"cpp(
+ "0: targets = {bar}\n"
+ "1: targets = {bar}\n"},
+ // Namespaces and aliases.
+ {R"cpp(
namespace ns {}
namespace alias = ns;
void foo() {
@@ -742,19 +811,19 @@
using namespace $1^alias;
}
)cpp",
- "0: targets = {ns}\n"
- "1: targets = {alias}\n"},
- // Using declarations.
- {R"cpp(
+ "0: targets = {ns}\n"
+ "1: targets = {alias}\n"},
+ // Using declarations.
+ {R"cpp(
namespace ns { int global; }
void foo() {
using $0^ns::$1^global;
}
)cpp",
- "0: targets = {ns}\n"
- "1: targets = {ns::global}, qualifier = 'ns::'\n"},
- // Simple types.
- {R"cpp(
+ "0: targets = {ns}\n"
+ "1: targets = {ns::global}, qualifier = 'ns::'\n"},
+ // Simple types.
+ {R"cpp(
struct Struct { int a; };
using Typedef = int;
void foo() {
@@ -763,13 +832,13 @@
static_cast<$4^Struct*>(0);
}
)cpp",
- "0: targets = {Struct}\n"
- "1: targets = {x}, decl\n"
- "2: targets = {Typedef}\n"
- "3: targets = {y}, decl\n"
- "4: targets = {Struct}\n"},
- // Name qualifiers.
- {R"cpp(
+ "0: targets = {Struct}\n"
+ "1: targets = {x}, decl\n"
+ "2: targets = {Typedef}\n"
+ "3: targets = {y}, decl\n"
+ "4: targets = {Struct}\n"},
+ // Name qualifiers.
+ {R"cpp(
namespace a { namespace b { struct S { typedef int type; }; } }
void foo() {
$0^a::$1^b::$2^S $3^x;
@@ -777,25 +846,25 @@
$6^S::$7^type $8^y;
}
)cpp",
- "0: targets = {a}\n"
- "1: targets = {a::b}, qualifier = 'a::'\n"
- "2: targets = {a::b::S}, qualifier = 'a::b::'\n"
- "3: targets = {x}, decl\n"
- "4: targets = {a}\n"
- "5: targets = {a::b}, qualifier = 'a::'\n"
- "6: targets = {a::b::S}\n"
- "7: targets = {a::b::S::type}, qualifier = 'struct S::'\n"
- "8: targets = {y}, decl\n"},
- {R"cpp(
+ "0: targets = {a}\n"
+ "1: targets = {a::b}, qualifier = 'a::'\n"
+ "2: targets = {a::b::S}, qualifier = 'a::b::'\n"
+ "3: targets = {x}, decl\n"
+ "4: targets = {a}\n"
+ "5: targets = {a::b}, qualifier = 'a::'\n"
+ "6: targets = {a::b::S}\n"
+ "7: targets = {a::b::S::type}, qualifier = 'struct S::'\n"
+ "8: targets = {y}, decl\n"},
+ {R"cpp(
void foo() {
$0^ten: // PRINT "HELLO WORLD!"
goto $1^ten;
}
)cpp",
- "0: targets = {ten}, decl\n"
- "1: targets = {ten}\n"},
- // Simple templates.
- {R"cpp(
+ "0: targets = {ten}, decl\n"
+ "1: targets = {ten}\n"},
+ // Simple templates.
+ {R"cpp(
template <class T> struct vector { using value_type = T; };
template <> struct vector<bool> { using value_type = bool; };
void foo() {
@@ -803,12 +872,12 @@
$2^vector<bool> $3^vb;
}
)cpp",
- "0: targets = {vector<int>}\n"
- "1: targets = {vi}, decl\n"
- "2: targets = {vector<bool>}\n"
- "3: targets = {vb}, decl\n"},
- // Template type aliases.
- {R"cpp(
+ "0: targets = {vector<int>}\n"
+ "1: targets = {vi}, decl\n"
+ "2: targets = {vector<bool>}\n"
+ "3: targets = {vb}, decl\n"},
+ // Template type aliases.
+ {R"cpp(
template <class T> struct vector { using value_type = T; };
template <> struct vector<bool> { using value_type = bool; };
template <class T> using valias = vector<T>;
@@ -817,12 +886,12 @@
$2^valias<bool> $3^vb;
}
)cpp",
- "0: targets = {valias}\n"
- "1: targets = {vi}, decl\n"
- "2: targets = {valias}\n"
- "3: targets = {vb}, decl\n"},
- // Injected class name.
- {R"cpp(
+ "0: targets = {valias}\n"
+ "1: targets = {vi}, decl\n"
+ "2: targets = {valias}\n"
+ "3: targets = {vb}, decl\n"},
+ // Injected class name.
+ {R"cpp(
namespace foo {
template <typename $0^T>
class $1^Bar {
@@ -831,13 +900,13 @@
};
}
)cpp",
- "0: targets = {foo::Bar::T}, decl\n"
- "1: targets = {foo::Bar}, decl\n"
- "2: targets = {foo::Bar}\n"
- "3: targets = {foo::Bar::f}, decl\n"
- "4: targets = {foo::Bar}\n"},
- // MemberExpr should know their using declaration.
- {R"cpp(
+ "0: targets = {foo::Bar::T}, decl\n"
+ "1: targets = {foo::Bar}, decl\n"
+ "2: targets = {foo::Bar}\n"
+ "3: targets = {foo::Bar::f}, decl\n"
+ "4: targets = {foo::Bar}\n"},
+ // MemberExpr should know their using declaration.
+ {R"cpp(
struct X { void func(int); };
struct Y : X {
using X::func;
@@ -846,10 +915,10 @@
$0^y.$1^func(1);
}
)cpp",
- "0: targets = {y}\n"
- "1: targets = {Y::func}\n"},
- // DeclRefExpr should know their using declaration.
- {R"cpp(
+ "0: targets = {y}\n"
+ "1: targets = {Y::func}\n"},
+ // DeclRefExpr should know their using declaration.
+ {R"cpp(
namespace ns { void bar(int); }
using ns::bar;
@@ -857,9 +926,9 @@
$0^bar(10);
}
)cpp",
- "0: targets = {bar}\n"},
- // References from a macro.
- {R"cpp(
+ "0: targets = {bar}\n"},
+ // References from a macro.
+ {R"cpp(
#define FOO a
#define BAR b
@@ -867,10 +936,10 @@
$0^FOO+$1^BAR;
}
)cpp",
- "0: targets = {a}\n"
- "1: targets = {b}\n"},
- // No references from implicit nodes.
- {R"cpp(
+ "0: targets = {a}\n"
+ "1: targets = {b}\n"},
+ // No references from implicit nodes.
+ {R"cpp(
struct vector {
int *begin();
int *end();
@@ -882,15 +951,15 @@
}
}
)cpp",
- "0: targets = {x}, decl\n"
- "1: targets = {vector}\n"
- "2: targets = {x}\n"},
+ "0: targets = {x}, decl\n"
+ "1: targets = {vector}\n"
+ "2: targets = {x}\n"},
// Handle UnresolvedLookupExpr.
// FIXME
// This case fails when expensive checks are enabled.
// Seems like the order of ns1::func and ns2::func isn't defined.
#ifndef EXPENSIVE_CHECKS
- {R"cpp(
+ {R"cpp(
namespace ns1 { void func(char*); }
namespace ns2 { void func(int*); }
using namespace ns1;
@@ -901,11 +970,11 @@
$0^func($1^t);
}
)cpp",
- "0: targets = {ns1::func, ns2::func}\n"
- "1: targets = {t}\n"},
+ "0: targets = {ns1::func, ns2::func}\n"
+ "1: targets = {t}\n"},
#endif
- // Handle UnresolvedMemberExpr.
- {R"cpp(
+ // Handle UnresolvedMemberExpr.
+ {R"cpp(
struct X {
void func(char*);
void func(int*);
@@ -916,11 +985,11 @@
$0^x.$1^func($2^t);
}
)cpp",
- "0: targets = {x}\n"
- "1: targets = {X::func, X::func}\n"
- "2: targets = {t}\n"},
- // Handle DependentScopeDeclRefExpr.
- {R"cpp(
+ "0: targets = {x}\n"
+ "1: targets = {X::func, X::func}\n"
+ "2: targets = {t}\n"},
+ // Handle DependentScopeDeclRefExpr.
+ {R"cpp(
template <class T>
struct S {
static int value;
@@ -931,11 +1000,11 @@
$0^S<$1^T>::$2^value;
}
)cpp",
- "0: targets = {S}\n"
- "1: targets = {T}\n"
- "2: targets = {S::value}, qualifier = 'S<T>::'\n"},
- // Handle CXXDependentScopeMemberExpr.
- {R"cpp(
+ "0: targets = {S}\n"
+ "1: targets = {T}\n"
+ "2: targets = {S::value}, qualifier = 'S<T>::'\n"},
+ // Handle CXXDependentScopeMemberExpr.
+ {R"cpp(
template <class T>
struct S {
int value;
@@ -946,10 +1015,10 @@
$0^t.$1^value;
}
)cpp",
- "0: targets = {t}\n"
- "1: targets = {S::value}\n"},
- // Type template parameters.
- {R"cpp(
+ "0: targets = {t}\n"
+ "1: targets = {S::value}\n"},
+ // Type template parameters.
+ {R"cpp(
template <class T>
void foo() {
static_cast<$0^T>(0);
@@ -957,21 +1026,21 @@
$2^T $3^t;
}
)cpp",
- "0: targets = {T}\n"
- "1: targets = {T}\n"
- "2: targets = {T}\n"
- "3: targets = {t}, decl\n"},
- // Non-type template parameters.
- {R"cpp(
+ "0: targets = {T}\n"
+ "1: targets = {T}\n"
+ "2: targets = {T}\n"
+ "3: targets = {t}, decl\n"},
+ // Non-type template parameters.
+ {R"cpp(
template <int I>
void foo() {
int $0^x = $1^I;
}
)cpp",
- "0: targets = {x}, decl\n"
- "1: targets = {I}\n"},
- // Template template parameters.
- {R"cpp(
+ "0: targets = {x}, decl\n"
+ "1: targets = {I}\n"},
+ // Template template parameters.
+ {R"cpp(
template <class T> struct vector {};
template <template<class> class TT, template<class> class ...TP>
@@ -982,16 +1051,16 @@
$6^foo<$7^TP...>();
}
)cpp",
- "0: targets = {TT}\n"
- "1: targets = {x}, decl\n"
- "2: targets = {foo}\n"
- "3: targets = {TT}\n"
- "4: targets = {foo}\n"
- "5: targets = {vector}\n"
- "6: targets = {foo}\n"
- "7: targets = {TP}\n"},
- // Non-type template parameters with declarations.
- {R"cpp(
+ "0: targets = {TT}\n"
+ "1: targets = {x}, decl\n"
+ "2: targets = {foo}\n"
+ "3: targets = {TT}\n"
+ "4: targets = {foo}\n"
+ "5: targets = {vector}\n"
+ "6: targets = {foo}\n"
+ "7: targets = {TP}\n"},
+ // Non-type template parameters with declarations.
+ {R"cpp(
int func();
template <int(*)()> struct wrapper {};
@@ -1001,12 +1070,12 @@
$3^FuncParam();
}
)cpp",
- "0: targets = {wrapper<&func>}\n"
- "1: targets = {func}\n"
- "2: targets = {w}, decl\n"
- "3: targets = {FuncParam}\n"},
- // declaration references.
- {R"cpp(
+ "0: targets = {wrapper<&func>}\n"
+ "1: targets = {func}\n"
+ "2: targets = {w}, decl\n"
+ "3: targets = {FuncParam}\n"},
+ // declaration references.
+ {R"cpp(
namespace ns {}
class S {};
void foo() {
@@ -1018,19 +1087,19 @@
namespace $9^NS = $10^ns;
}
)cpp",
- "0: targets = {Foo}, decl\n"
- "1: targets = {foo()::Foo::Foo}, decl\n"
- "2: targets = {Foo}\n"
- "3: targets = {foo()::Foo::field}, decl\n"
- "4: targets = {Var}, decl\n"
- "5: targets = {E}, decl\n"
- "6: targets = {foo()::ABC}, decl\n"
- "7: targets = {INT}, decl\n"
- "8: targets = {INT2}, decl\n"
- "9: targets = {NS}, decl\n"
- "10: targets = {ns}\n"},
- // User-defined conversion operator.
- {R"cpp(
+ "0: targets = {Foo}, decl\n"
+ "1: targets = {foo()::Foo::Foo}, decl\n"
+ "2: targets = {Foo}\n"
+ "3: targets = {foo()::Foo::field}, decl\n"
+ "4: targets = {Var}, decl\n"
+ "5: targets = {E}, decl\n"
+ "6: targets = {foo()::ABC}, decl\n"
+ "7: targets = {INT}, decl\n"
+ "8: targets = {INT2}, decl\n"
+ "9: targets = {NS}, decl\n"
+ "10: targets = {ns}\n"},
+ // User-defined conversion operator.
+ {R"cpp(
void foo() {
class $0^Bar {};
class $1^Foo {
@@ -1043,18 +1112,18 @@
$7^f.$8^operator $9^Bar();
}
)cpp",
- "0: targets = {Bar}, decl\n"
- "1: targets = {Foo}, decl\n"
- "2: targets = {foo()::Foo::operator Bar}, decl\n"
- "3: targets = {Bar}\n"
- "4: targets = {Bar}\n"
- "5: targets = {Foo}\n"
- "6: targets = {f}, decl\n"
- "7: targets = {f}\n"
- "8: targets = {foo()::Foo::operator Bar}\n"
- "9: targets = {Bar}\n"},
- // Destructor.
- {R"cpp(
+ "0: targets = {Bar}, decl\n"
+ "1: targets = {Foo}, decl\n"
+ "2: targets = {foo()::Foo::operator Bar}, decl\n"
+ "3: targets = {Bar}\n"
+ "4: targets = {Bar}\n"
+ "5: targets = {Foo}\n"
+ "6: targets = {f}, decl\n"
+ "7: targets = {f}\n"
+ "8: targets = {foo()::Foo::operator Bar}\n"
+ "9: targets = {Bar}\n"},
+ // Destructor.
+ {R"cpp(
void foo() {
class $0^Foo {
public:
@@ -1069,18 +1138,18 @@
$6^f.~ /*...*/ $7^Foo();
}
)cpp",
- "0: targets = {Foo}, decl\n"
- // FIXME: It's better to target destructor's FunctionDecl instead of
- // the type itself (similar to constructor).
- "1: targets = {Foo}\n"
- "2: targets = {foo()::Foo::destructMe}, decl\n"
- "3: targets = {Foo}\n"
- "4: targets = {Foo}\n"
- "5: targets = {f}, decl\n"
- "6: targets = {f}\n"
- "7: targets = {Foo}\n"},
- // cxx constructor initializer.
- {R"cpp(
+ "0: targets = {Foo}, decl\n"
+ // FIXME: It's better to target destructor's FunctionDecl instead of
+ // the type itself (similar to constructor).
+ "1: targets = {Foo}\n"
+ "2: targets = {foo()::Foo::destructMe}, decl\n"
+ "3: targets = {Foo}\n"
+ "4: targets = {Foo}\n"
+ "5: targets = {f}, decl\n"
+ "6: targets = {f}\n"
+ "7: targets = {Foo}\n"},
+ // cxx constructor initializer.
+ {R"cpp(
class Base {};
void foo() {
// member initializer
@@ -1100,34 +1169,34 @@
};
}
)cpp",
- "0: targets = {X}, decl\n"
- "1: targets = {foo()::X::abc}, decl\n"
- "2: targets = {foo()::X::X}, decl\n"
- "3: targets = {foo()::X::abc}\n"
- "4: targets = {Derived}, decl\n"
- "5: targets = {Base}\n"
- "6: targets = {Base}\n"
- "7: targets = {foo()::Derived::B}, decl\n"
- "8: targets = {foo()::Derived::Derived}, decl\n"
- "9: targets = {Base}\n"
- "10: targets = {Foo}, decl\n"
- "11: targets = {foo()::Foo::Foo}, decl\n"
- "12: targets = {foo()::Foo::Foo}, decl\n"
- "13: targets = {Foo}\n"},
- // Anonymous entities should not be reported.
- {
- R"cpp(
+ "0: targets = {X}, decl\n"
+ "1: targets = {foo()::X::abc}, decl\n"
+ "2: targets = {foo()::X::X}, decl\n"
+ "3: targets = {foo()::X::abc}\n"
+ "4: targets = {Derived}, decl\n"
+ "5: targets = {Base}\n"
+ "6: targets = {Base}\n"
+ "7: targets = {foo()::Derived::B}, decl\n"
+ "8: targets = {foo()::Derived::Derived}, decl\n"
+ "9: targets = {Base}\n"
+ "10: targets = {Foo}, decl\n"
+ "11: targets = {foo()::Foo::Foo}, decl\n"
+ "12: targets = {foo()::Foo::Foo}, decl\n"
+ "13: targets = {Foo}\n"},
+ // Anonymous entities should not be reported.
+ {
+ R"cpp(
void foo() {
class {} $0^x;
int (*$1^fptr)(int $2^a, int) = nullptr;
}
)cpp",
- "0: targets = {x}, decl\n"
- "1: targets = {fptr}, decl\n"
- "2: targets = {a}, decl\n"},
- // Namespace aliases should be handled properly.
- {
- R"cpp(
+ "0: targets = {x}, decl\n"
+ "1: targets = {fptr}, decl\n"
+ "2: targets = {a}, decl\n"},
+ // Namespace aliases should be handled properly.
+ {
+ R"cpp(
namespace ns { struct Type {}; }
namespace alias = ns;
namespace rec_alias = alias;
@@ -1138,28 +1207,28 @@
$6^rec_alias::$7^Type $8^c;
}
)cpp",
- "0: targets = {ns}\n"
- "1: targets = {ns::Type}, qualifier = 'ns::'\n"
- "2: targets = {a}, decl\n"
- "3: targets = {alias}\n"
- "4: targets = {ns::Type}, qualifier = 'alias::'\n"
- "5: targets = {b}, decl\n"
- "6: targets = {rec_alias}\n"
- "7: targets = {ns::Type}, qualifier = 'rec_alias::'\n"
- "8: targets = {c}, decl\n"},
- // Handle SizeOfPackExpr.
- {
- R"cpp(
+ "0: targets = {ns}\n"
+ "1: targets = {ns::Type}, qualifier = 'ns::'\n"
+ "2: targets = {a}, decl\n"
+ "3: targets = {alias}\n"
+ "4: targets = {ns::Type}, qualifier = 'alias::'\n"
+ "5: targets = {b}, decl\n"
+ "6: targets = {rec_alias}\n"
+ "7: targets = {ns::Type}, qualifier = 'rec_alias::'\n"
+ "8: targets = {c}, decl\n"},
+ // Handle SizeOfPackExpr.
+ {
+ R"cpp(
template <typename... E>
void foo() {
constexpr int $0^size = sizeof...($1^E);
};
)cpp",
- "0: targets = {size}, decl\n"
- "1: targets = {E}\n"},
- // Class template argument deduction
- {
- R"cpp(
+ "0: targets = {size}, decl\n"
+ "1: targets = {E}\n"},
+ // Class template argument deduction
+ {
+ R"cpp(
template <typename T>
struct Test {
Test(T);
@@ -1168,51 +1237,51 @@
$0^Test $1^a(5);
}
)cpp",
- "0: targets = {Test}\n"
- "1: targets = {a}, decl\n"},
- // Templates
- {R"cpp(
+ "0: targets = {Test}\n"
+ "1: targets = {a}, decl\n"},
+ // Templates
+ {R"cpp(
namespace foo {
template <typename $0^T>
class $1^Bar {};
}
)cpp",
- "0: targets = {foo::Bar::T}, decl\n"
- "1: targets = {foo::Bar}, decl\n"},
- // Templates
- {R"cpp(
+ "0: targets = {foo::Bar::T}, decl\n"
+ "1: targets = {foo::Bar}, decl\n"},
+ // Templates
+ {R"cpp(
namespace foo {
template <typename $0^T>
void $1^func();
}
)cpp",
- "0: targets = {T}, decl\n"
- "1: targets = {foo::func}, decl\n"},
- // Templates
- {R"cpp(
+ "0: targets = {T}, decl\n"
+ "1: targets = {foo::func}, decl\n"},
+ // Templates
+ {R"cpp(
namespace foo {
template <typename $0^T>
$1^T $2^x;
}
)cpp",
- "0: targets = {foo::T}, decl\n"
- "1: targets = {foo::T}\n"
- "2: targets = {foo::x}, decl\n"},
- // Templates
- {R"cpp(
+ "0: targets = {foo::T}, decl\n"
+ "1: targets = {foo::T}\n"
+ "2: targets = {foo::x}, decl\n"},
+ // Templates
+ {R"cpp(
template<typename T> class vector {};
namespace foo {
template <typename $0^T>
using $1^V = $2^vector<$3^T>;
}
)cpp",
- "0: targets = {foo::T}, decl\n"
- "1: targets = {foo::V}, decl\n"
- "2: targets = {vector}\n"
- "3: targets = {foo::T}\n"},
- // Concept
- {
- R"cpp(
+ "0: targets = {foo::T}, decl\n"
+ "1: targets = {foo::V}, decl\n"
+ "2: targets = {vector}\n"
+ "3: targets = {foo::T}\n"},
+ // Concept
+ {
+ R"cpp(
template <typename T>
concept Drawable = requires (T t) { t.draw(); };
@@ -1223,17 +1292,17 @@
}
}
)cpp",
- "0: targets = {T}, decl\n"
- "1: targets = {Drawable}\n"
- "2: targets = {T}\n"
- "3: targets = {foo::bar}, decl\n"
- "4: targets = {T}\n"
- "5: targets = {t}, decl\n"
- "6: targets = {t}\n"
- "7: targets = {}\n"},
- // Objective-C: properties
- {
- R"cpp(
+ "0: targets = {T}, decl\n"
+ "1: targets = {Drawable}\n"
+ "2: targets = {T}\n"
+ "3: targets = {foo::bar}, decl\n"
+ "4: targets = {T}\n"
+ "5: targets = {t}, decl\n"
+ "6: targets = {t}\n"
+ "7: targets = {}\n"},
+ // Objective-C: properties
+ {
+ R"cpp(
@interface I {}
@property(retain) I* x;
@property(retain) I* y;
@@ -1243,12 +1312,12 @@
$0^f.$1^x.$2^y = 0;
}
)cpp",
- "0: targets = {f}\n"
- "1: targets = {I::x}\n"
- "2: targets = {I::y}\n"},
- // Objective-C: implicit properties
- {
- R"cpp(
+ "0: targets = {f}\n"
+ "1: targets = {I::x}\n"
+ "2: targets = {I::y}\n"},
+ // Objective-C: implicit properties
+ {
+ R"cpp(
@interface I {}
-(I*)x;
-(void)setY:(I*)y;
@@ -1258,11 +1327,11 @@
$0^f.$1^x.$2^y = 0;
}
)cpp",
- "0: targets = {f}\n"
- "1: targets = {I::x}\n"
- "2: targets = {I::setY:}\n"},
- // Designated initializers.
- {R"cpp(
+ "0: targets = {f}\n"
+ "1: targets = {I::x}\n"
+ "2: targets = {I::setY:}\n"},
+ // Designated initializers.
+ {R"cpp(
void foo() {
struct $0^Foo {
int $1^Bar;
@@ -1270,12 +1339,12 @@
$2^Foo $3^f { .$4^Bar = 42 };
}
)cpp",
- "0: targets = {Foo}, decl\n"
- "1: targets = {foo()::Foo::Bar}, decl\n"
- "2: targets = {Foo}\n"
- "3: targets = {f}, decl\n"
- "4: targets = {foo()::Foo::Bar}\n"},
- {R"cpp(
+ "0: targets = {Foo}, decl\n"
+ "1: targets = {foo()::Foo::Bar}, decl\n"
+ "2: targets = {Foo}\n"
+ "3: targets = {f}, decl\n"
+ "4: targets = {foo()::Foo::Bar}\n"},
+ {R"cpp(
void foo() {
struct $0^Baz {
int $1^Field;
@@ -1286,16 +1355,16 @@
$5^Bar $6^bar { .$7^Foo.$8^Field = 42 };
}
)cpp",
- "0: targets = {Baz}, decl\n"
- "1: targets = {foo()::Baz::Field}, decl\n"
- "2: targets = {Bar}, decl\n"
- "3: targets = {Baz}\n"
- "4: targets = {foo()::Bar::Foo}, decl\n"
- "5: targets = {Bar}\n"
- "6: targets = {bar}, decl\n"
- "7: targets = {foo()::Bar::Foo}\n"
- "8: targets = {foo()::Baz::Field}\n"},
- {R"cpp(
+ "0: targets = {Baz}, decl\n"
+ "1: targets = {foo()::Baz::Field}, decl\n"
+ "2: targets = {Bar}, decl\n"
+ "3: targets = {Baz}\n"
+ "4: targets = {foo()::Bar::Foo}, decl\n"
+ "5: targets = {Bar}\n"
+ "6: targets = {bar}, decl\n"
+ "7: targets = {foo()::Bar::Foo}\n"
+ "8: targets = {foo()::Baz::Field}\n"},
+ {R"cpp(
template<typename T>
void crash(T);
template<typename T>
@@ -1303,12 +1372,11 @@
$0^crash({.$1^x = $2^T()});
}
)cpp",
- "0: targets = {crash}\n"
- "1: targets = {}\n"
- "2: targets = {T}\n"
- },
- // unknown template name should not crash.
- {R"cpp(
+ "0: targets = {crash}\n"
+ "1: targets = {}\n"
+ "2: targets = {T}\n"},
+ // unknown template name should not crash.
+ {R"cpp(
template <template <typename> typename T>
struct Base {};
namespace foo {
@@ -1316,12 +1384,12 @@
struct $1^Derive : $2^Base<$3^T::template $4^Unknown> {};
}
)cpp",
- "0: targets = {foo::Derive::T}, decl\n"
- "1: targets = {foo::Derive}, decl\n"
- "2: targets = {Base}\n"
- "3: targets = {foo::Derive::T}\n"
- "4: targets = {}, qualifier = 'T::'\n"},
- };
+ "0: targets = {foo::Derive::T}, decl\n"
+ "1: targets = {foo::Derive}, decl\n"
+ "2: targets = {Base}\n"
+ "3: targets = {foo::Derive::T}\n"
+ "4: targets = {}, qualifier = 'T::'\n"},
+ };
for (const auto &C : Cases) {
llvm::StringRef ExpectedCode = C.first;
Index: clang-tools-extra/clangd/FindTarget.cpp
===================================================================
--- clang-tools-extra/clangd/FindTarget.cpp
+++ clang-tools-extra/clangd/FindTarget.cpp
@@ -58,14 +58,25 @@
return S;
}
+// Forward declaration, needed as this function is mutually recursive
+// with some of the other helpers below.
+std::vector<const NamedDecl *> resolveDependentExprToDecls(const Expr *E);
+
// Helper function for getMembersReferencedViaDependentName()
-// which takes a dependent type `T` and heuristically
+// which takes a possibly-dependent type `T` and heuristically
// resolves it to a CXXRecordDecl in which we can try name lookup.
CXXRecordDecl *resolveTypeToRecordDecl(const Type *T) {
assert(T);
+
+ if (const auto *RT = T->getAs<RecordType>()) {
+ return dyn_cast<CXXRecordDecl>(RT->getDecl());
+ }
+
if (const auto *ICNT = T->getAs<InjectedClassNameType>()) {
T = ICNT->getInjectedSpecializationType().getTypePtrOrNull();
}
+ if (!T)
+ return nullptr;
const auto *TST = T->getAs<TemplateSpecializationType>();
if (!TST)
return nullptr;
@@ -76,7 +87,20 @@
return TD->getTemplatedDecl();
}
-// Given a dependent type and a member name, heuristically resolve the
+// Try to heuristically resolve the type of a dependent expression `E`.
+const Type *resolveDependentExprToType(const Expr *E) {
+ std::vector<const NamedDecl *> Decls = resolveDependentExprToDecls(E);
+ if (Decls.size() != 1) // Names an overload set -- just bail.
+ return nullptr;
+ if (const auto *TD = dyn_cast<TypeDecl>(Decls[0])) {
+ return TD->getTypeForDecl();
+ } else if (const auto *VD = dyn_cast<ValueDecl>(Decls[0])) {
+ return VD->getType().getTypePtrOrNull();
+ }
+ return nullptr;
+}
+
+// Given a tag-decl type and a member name, heuristically resolve the
// name to one or more declarations.
// The current heuristic is simply to look up the name in the primary
// template. This is a heuristic because the template could potentially
@@ -163,6 +187,17 @@
if (ME->isArrow()) {
BaseType = getPointeeType(BaseType);
}
+ Expr *Base = ME->isImplicitAccess() ? nullptr : ME->getBase();
+ if (const auto *BT = BaseType->getAs<BuiltinType>()) {
+ // If BaseType is the type of a dependent expression, it's just
+ // represented as BultinType::Dependent which gives us no information. We
+ // can get further b analyzing the depedent expression.
+ if (Base && BT->getKind() == BuiltinType::Dependent) {
+ BaseType = resolveDependentExprToType(Base);
+ if (!BaseType)
+ return {};
+ }
+ }
return getMembersReferencedViaDependentName(
BaseType, [ME](ASTContext &) { return ME->getMember(); },
/*IsNonstaticMember=*/true);
@@ -173,6 +208,22 @@
[RE](ASTContext &) { return RE->getDeclName(); },
/*IsNonstaticMember=*/false);
}
+ if (const auto *CE = dyn_cast<CallExpr>(E)) {
+ const auto *CalleeType = resolveDependentExprToType(CE->getCallee());
+ if (!CalleeType)
+ return {};
+ if (const auto *FnTypePtr = CalleeType->getAs<PointerType>())
+ CalleeType = FnTypePtr->getPointeeType().getTypePtr();
+ if (const FunctionType *FnType = CalleeType->getAs<FunctionType>()) {
+ if (const auto *D =
+ resolveTypeToRecordDecl(FnType->getReturnType().getTypePtr())) {
+ return {D};
+ }
+ }
+ }
+ if (const auto *ME = dyn_cast<MemberExpr>(E)) {
+ return {ME->getMemberDecl()};
+ }
return {};
}
@@ -235,9 +286,8 @@
// and both are lossy. We must know upfront what the caller ultimately wants.
//
// FIXME: improve common dependent scope using name lookup in primary templates.
-// e.g. template<typename T> int foo() { return std::vector<T>().size(); }
-// formally size() is unresolved, but the primary template is a good guess.
-// This affects:
+// We currently handle DependentScopeDeclRefExpr and
+// CXXDependentScopeMemberExpr, but some other constructs remain to be handled:
// - DependentTemplateSpecializationType,
// - DependentNameType
// - UnresolvedUsingValueDecl
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