/
HoverTests.cpp
2411 lines (2341 loc) · 71.9 KB
/
HoverTests.cpp
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//===-- HoverTests.cpp ----------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "AST.h"
#include "Annotations.h"
#include "Hover.h"
#include "TestIndex.h"
#include "TestTU.h"
#include "index/MemIndex.h"
#include "clang/Basic/Specifiers.h"
#include "clang/Index/IndexSymbol.h"
#include "llvm/ADT/None.h"
#include "llvm/ADT/StringRef.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include <string>
#include <vector>
namespace clang {
namespace clangd {
namespace {
using PassMode = HoverInfo::PassType::PassMode;
TEST(Hover, Structured) {
struct {
const char *const Code;
const std::function<void(HoverInfo &)> ExpectedBuilder;
} Cases[] = {
// Global scope.
{R"cpp(
// Best foo ever.
void [[fo^o]]() {}
)cpp",
[](HoverInfo &HI) {
HI.NamespaceScope = "";
HI.Name = "foo";
HI.Kind = index::SymbolKind::Function;
HI.Documentation = "Best foo ever.";
HI.Definition = "void foo()";
HI.ReturnType = "void";
HI.Type = "void ()";
HI.Parameters.emplace();
}},
// Inside namespace
{R"cpp(
namespace ns1 { namespace ns2 {
/// Best foo ever.
void [[fo^o]]() {}
}}
)cpp",
[](HoverInfo &HI) {
HI.NamespaceScope = "ns1::ns2::";
HI.Name = "foo";
HI.Kind = index::SymbolKind::Function;
HI.Documentation = "Best foo ever.";
HI.Definition = "void foo()";
HI.ReturnType = "void";
HI.Type = "void ()";
HI.Parameters.emplace();
}},
// Field
{R"cpp(
namespace ns1 { namespace ns2 {
struct Foo {
char [[b^ar]];
};
}}
)cpp",
[](HoverInfo &HI) {
HI.NamespaceScope = "ns1::ns2::";
HI.LocalScope = "Foo::";
HI.Name = "bar";
HI.Kind = index::SymbolKind::Field;
HI.Definition = "char bar";
HI.Type = "char";
HI.Offset = 0;
HI.Size = 1;
HI.AccessSpecifier = "public";
}},
// Local to class method.
{R"cpp(
namespace ns1 { namespace ns2 {
struct Foo {
void foo() {
int [[b^ar]];
}
};
}}
)cpp",
[](HoverInfo &HI) {
HI.NamespaceScope = "ns1::ns2::";
HI.LocalScope = "Foo::foo::";
HI.Name = "bar";
HI.Kind = index::SymbolKind::Variable;
HI.Definition = "int bar";
HI.Type = "int";
}},
// Anon namespace and local scope.
{R"cpp(
namespace ns1 { namespace {
struct {
char [[b^ar]];
} T;
}}
)cpp",
[](HoverInfo &HI) {
HI.NamespaceScope = "ns1::";
HI.LocalScope = "(anonymous struct)::";
HI.Name = "bar";
HI.Kind = index::SymbolKind::Field;
HI.Definition = "char bar";
HI.Type = "char";
HI.Offset = 0;
HI.Size = 1;
HI.AccessSpecifier = "public";
}},
// Struct definition shows size.
{R"cpp(
struct [[^X]]{};
)cpp",
[](HoverInfo &HI) {
HI.NamespaceScope = "";
HI.Name = "X";
HI.Kind = index::SymbolKind::Struct;
HI.Definition = "struct X {}";
HI.Size = 1;
}},
// Variable with template type
{R"cpp(
template <typename T, class... Ts> class Foo { public: Foo(int); };
Foo<int, char, bool> [[fo^o]] = Foo<int, char, bool>(5);
)cpp",
[](HoverInfo &HI) {
HI.NamespaceScope = "";
HI.Name = "foo";
HI.Kind = index::SymbolKind::Variable;
HI.Definition = "Foo<int, char, bool> foo = Foo<int, char, bool>(5)";
HI.Type = "Foo<int, char, bool>";
}},
// Implicit template instantiation
{R"cpp(
template <typename T> class vector{};
[[vec^tor]]<int> foo;
)cpp",
[](HoverInfo &HI) {
HI.NamespaceScope = "";
HI.Name = "vector<int>";
HI.Kind = index::SymbolKind::Class;
HI.Definition = "template <> class vector<int> {}";
}},
// Class template
{R"cpp(
template <template<typename, bool...> class C,
typename = char,
int = 0,
bool Q = false,
class... Ts> class Foo {};
template <template<typename, bool...> class T>
[[F^oo]]<T> foo;
)cpp",
[](HoverInfo &HI) {
HI.NamespaceScope = "";
HI.Name = "Foo";
HI.Kind = index::SymbolKind::Class;
HI.Definition =
R"cpp(template <template <typename, bool...> class C, typename = char, int = 0,
bool Q = false, class... Ts>
class Foo {})cpp";
HI.TemplateParameters = {
{std::string("template <typename, bool...> class"),
std::string("C"), llvm::None},
{std::string("typename"), llvm::None, std::string("char")},
{std::string("int"), llvm::None, std::string("0")},
{std::string("bool"), std::string("Q"), std::string("false")},
{std::string("class..."), std::string("Ts"), llvm::None},
};
}},
// Function template
{R"cpp(
template <template<typename, bool...> class C,
typename = char,
int = 0,
bool Q = false,
class... Ts> void foo();
template<typename, bool...> class Foo;
void bar() {
[[fo^o]]<Foo>();
}
)cpp",
[](HoverInfo &HI) {
HI.NamespaceScope = "";
HI.Name = "foo";
HI.Kind = index::SymbolKind::Function;
HI.Definition = "template <> void foo<Foo, char, 0, false, <>>()";
HI.ReturnType = "void";
HI.Type = "void ()";
HI.Parameters.emplace();
}},
// Function decl
{R"cpp(
template<typename, bool...> class Foo {};
Foo<bool, true, false> foo(int, bool T = false);
void bar() {
[[fo^o]](3);
}
)cpp",
[](HoverInfo &HI) {
HI.NamespaceScope = "";
HI.Name = "foo";
HI.Kind = index::SymbolKind::Function;
HI.Definition = "Foo<bool, true, false> foo(int, bool T = false)";
HI.ReturnType = "Foo<bool, true, false>";
HI.Type = "Foo<bool, true, false> (int, bool)";
HI.Parameters = {
{std::string("int"), llvm::None, llvm::None},
{std::string("bool"), std::string("T"), std::string("false")},
};
}},
// Pointers to lambdas
{R"cpp(
void foo() {
auto lamb = [](int T, bool B) -> bool { return T && B; };
auto *b = &lamb;
auto *[[^c]] = &b;
}
)cpp",
[](HoverInfo &HI) {
HI.NamespaceScope = "";
HI.LocalScope = "foo::";
HI.Name = "c";
HI.Kind = index::SymbolKind::Variable;
HI.Definition = "auto *c = &b";
HI.Type = "class (lambda) **";
HI.ReturnType = "bool";
HI.Parameters = {
{std::string("int"), std::string("T"), llvm::None},
{std::string("bool"), std::string("B"), llvm::None},
};
return HI;
}},
// Lambda parameter with decltype reference
{R"cpp(
auto lamb = [](int T, bool B) -> bool { return T && B; };
void foo(decltype(lamb)& bar) {
[[ba^r]](0, false);
}
)cpp",
[](HoverInfo &HI) {
HI.NamespaceScope = "";
HI.LocalScope = "foo::";
HI.Name = "bar";
HI.Kind = index::SymbolKind::Parameter;
HI.Definition = "decltype(lamb) &bar";
HI.Type = "decltype(lamb) &";
HI.ReturnType = "bool";
HI.Parameters = {
{std::string("int"), std::string("T"), llvm::None},
{std::string("bool"), std::string("B"), llvm::None},
};
return HI;
}},
// Lambda parameter with decltype
{R"cpp(
auto lamb = [](int T, bool B) -> bool { return T && B; };
void foo(decltype(lamb) bar) {
[[ba^r]](0, false);
}
)cpp",
[](HoverInfo &HI) {
HI.NamespaceScope = "";
HI.LocalScope = "foo::";
HI.Name = "bar";
HI.Kind = index::SymbolKind::Parameter;
HI.Definition = "decltype(lamb) bar";
HI.Type = "class (lambda)";
HI.ReturnType = "bool";
HI.Parameters = {
{std::string("int"), std::string("T"), llvm::None},
{std::string("bool"), std::string("B"), llvm::None},
};
HI.Value = "false";
return HI;
}},
// Lambda variable
{R"cpp(
void foo() {
int bar = 5;
auto lamb = [&bar](int T, bool B) -> bool { return T && B && bar; };
bool res = [[lam^b]](bar, false);
}
)cpp",
[](HoverInfo &HI) {
HI.NamespaceScope = "";
HI.LocalScope = "foo::";
HI.Name = "lamb";
HI.Kind = index::SymbolKind::Variable;
HI.Definition = "auto lamb = [&bar](int T, bool B) -> bool {}";
HI.Type = "class (lambda)";
HI.ReturnType = "bool";
HI.Parameters = {
{std::string("int"), std::string("T"), llvm::None},
{std::string("bool"), std::string("B"), llvm::None},
};
return HI;
}},
// Local variable in lambda
{R"cpp(
void foo() {
auto lamb = []{int [[te^st]];};
}
)cpp",
[](HoverInfo &HI) {
HI.NamespaceScope = "";
HI.LocalScope = "foo::(anonymous class)::operator()::";
HI.Name = "test";
HI.Kind = index::SymbolKind::Variable;
HI.Definition = "int test";
HI.Type = "int";
}},
// Partially-specialized class template. (formerly type-parameter-0-0)
{R"cpp(
template <typename T> class X;
template <typename T> class [[^X]]<T*> {};
)cpp",
[](HoverInfo &HI) {
HI.Name = "X<T *>";
HI.NamespaceScope = "";
HI.Kind = index::SymbolKind::Class;
HI.Definition = "template <typename T> class X<T *> {}";
}},
// Constructor of partially-specialized class template
{R"cpp(
template<typename, typename=void> struct X;
template<typename T> struct X<T*>{ [[^X]](); };
)cpp",
[](HoverInfo &HI) {
HI.NamespaceScope = "";
HI.Name = "X";
HI.LocalScope = "X<T *>::"; // FIXME: X<T *, void>::
HI.Kind = index::SymbolKind::Constructor;
HI.Definition = "X()";
HI.Parameters.emplace();
HI.AccessSpecifier = "public";
}},
{"class X { [[^~]]X(); };", // FIXME: Should be [[~X]]()
[](HoverInfo &HI) {
HI.NamespaceScope = "";
HI.Name = "~X";
HI.LocalScope = "X::";
HI.Kind = index::SymbolKind::Destructor;
HI.Definition = "~X()";
HI.Parameters.emplace();
HI.AccessSpecifier = "private";
}},
{"class X { [[op^erator]] int(); };",
[](HoverInfo &HI) {
HI.NamespaceScope = "";
HI.Name = "operator int";
HI.LocalScope = "X::";
HI.Kind = index::SymbolKind::ConversionFunction;
HI.Definition = "operator int()";
HI.Parameters.emplace();
HI.AccessSpecifier = "private";
}},
{"class X { operator [[^X]](); };",
[](HoverInfo &HI) {
HI.NamespaceScope = "";
HI.Name = "X";
HI.Kind = index::SymbolKind::Class;
HI.Definition = "class X {}";
}},
// auto on lambda
{R"cpp(
void foo() {
[[au^to]] lamb = []{};
}
)cpp",
[](HoverInfo &HI) {
HI.Name = "(lambda)";
HI.Kind = index::SymbolKind::Class;
}},
// auto on template instantiation
{R"cpp(
template<typename T> class Foo{};
void foo() {
[[au^to]] x = Foo<int>();
}
)cpp",
[](HoverInfo &HI) {
HI.Name = "Foo<int>";
HI.Kind = index::SymbolKind::Class;
}},
// auto on specialized template
{R"cpp(
template<typename T> class Foo{};
template<> class Foo<int>{};
void foo() {
[[au^to]] x = Foo<int>();
}
)cpp",
[](HoverInfo &HI) {
HI.Name = "Foo<int>";
HI.Kind = index::SymbolKind::Class;
}},
// macro
{R"cpp(
// Best MACRO ever.
#define MACRO(x,y,z) void foo(x, y, z);
[[MAC^RO]](int, double d, bool z = false);
)cpp",
[](HoverInfo &HI) {
HI.Name = "MACRO", HI.Kind = index::SymbolKind::Macro,
HI.Definition = "#define MACRO(x, y, z) void foo(x, y, z);";
}},
// constexprs
{R"cpp(
constexpr int add(int a, int b) { return a + b; }
int [[b^ar]] = add(1, 2);
)cpp",
[](HoverInfo &HI) {
HI.Name = "bar";
HI.Definition = "int bar = add(1, 2)";
HI.Kind = index::SymbolKind::Variable;
HI.Type = "int";
HI.NamespaceScope = "";
HI.Value = "3";
}},
{R"cpp(
int [[b^ar]] = sizeof(char);
)cpp",
[](HoverInfo &HI) {
HI.Name = "bar";
HI.Definition = "int bar = sizeof(char)";
HI.Kind = index::SymbolKind::Variable;
HI.Type = "int";
HI.NamespaceScope = "";
HI.Value = "1";
}},
{R"cpp(
template<int a, int b> struct Add {
static constexpr int result = a + b;
};
int [[ba^r]] = Add<1, 2>::result;
)cpp",
[](HoverInfo &HI) {
HI.Name = "bar";
HI.Definition = "int bar = Add<1, 2>::result";
HI.Kind = index::SymbolKind::Variable;
HI.Type = "int";
HI.NamespaceScope = "";
HI.Value = "3";
}},
{R"cpp(
enum Color { RED, GREEN, };
Color x = [[GR^EEN]];
)cpp",
[](HoverInfo &HI) {
HI.Name = "GREEN";
HI.NamespaceScope = "";
HI.LocalScope = "Color::";
HI.Definition = "GREEN";
HI.Kind = index::SymbolKind::EnumConstant;
HI.Type = "enum Color";
HI.Value = "1"; // Numeric when hovering on the enumerator name.
}},
{R"cpp(
enum Color { RED, GREEN, };
Color x = GREEN;
Color y = [[^x]];
)cpp",
[](HoverInfo &HI) {
HI.Name = "x";
HI.NamespaceScope = "";
HI.Definition = "Color x = GREEN";
HI.Kind = index::SymbolKind::Variable;
HI.Type = "enum Color";
HI.Value = "GREEN (1)"; // Symbolic when hovering on an expression.
}},
{R"cpp(
template<int a, int b> struct Add {
static constexpr int result = a + b;
};
int bar = Add<1, 2>::[[resu^lt]];
)cpp",
[](HoverInfo &HI) {
HI.Name = "result";
HI.Definition = "static constexpr int result = 1 + 2";
HI.Kind = index::SymbolKind::StaticProperty;
HI.Type = "const int";
HI.NamespaceScope = "";
HI.LocalScope = "Add<1, 2>::";
HI.Value = "3";
HI.AccessSpecifier = "public";
}},
{R"cpp(
constexpr int answer() { return 40 + 2; }
int x = [[ans^wer]]();
)cpp",
[](HoverInfo &HI) {
HI.Name = "answer";
HI.Definition = "constexpr int answer()";
HI.Kind = index::SymbolKind::Function;
HI.Type = "int ()";
HI.ReturnType = "int";
HI.Parameters.emplace();
HI.NamespaceScope = "";
HI.Value = "42";
}},
{R"cpp(
const char *[[ba^r]] = "1234";
)cpp",
[](HoverInfo &HI) {
HI.Name = "bar";
HI.Definition = "const char *bar = \"1234\"";
HI.Kind = index::SymbolKind::Variable;
HI.Type = "const char *";
HI.NamespaceScope = "";
HI.Value = "&\"1234\"[0]";
}},
{R"cpp(// Should not crash
template <typename T>
struct Tmpl {
Tmpl(int name);
};
template <typename A>
void boom(int name) {
new Tmpl<A>([[na^me]]);
})cpp",
[](HoverInfo &HI) {
HI.Name = "name";
HI.Definition = "int name";
HI.Kind = index::SymbolKind::Parameter;
HI.Type = "int";
HI.NamespaceScope = "";
HI.LocalScope = "boom::";
}},
{
R"cpp(// Should not print inline or anon namespaces.
namespace ns {
inline namespace in_ns {
namespace a {
namespace {
namespace b {
inline namespace in_ns2 {
class Foo {};
} // in_ns2
} // b
} // anon
} // a
} // in_ns
} // ns
void foo() {
ns::a::b::[[F^oo]] x;
(void)x;
}
)cpp",
[](HoverInfo &HI) {
HI.Name = "Foo";
HI.Kind = index::SymbolKind::Class;
HI.NamespaceScope = "ns::a::b::";
HI.Definition = "class Foo {}";
}},
{
R"cpp(
template <typename T> class Foo {};
class X;
void foo() {
[[^auto]] x = Foo<X>();
}
)cpp",
[](HoverInfo &HI) {
HI.Name = "Foo<X>";
HI.Kind = index::SymbolKind::Class;
}},
{// Falls back to primary template, when the type is not instantiated.
R"cpp(
// comment from primary
template <typename T> class Foo {};
// comment from specialization
template <typename T> class Foo<T*> {};
void foo() {
[[Fo^o]]<int*> *x = nullptr;
}
)cpp",
[](HoverInfo &HI) {
HI.Name = "Foo<int *>";
HI.Kind = index::SymbolKind::Class;
HI.NamespaceScope = "";
HI.Definition = "template <> class Foo<int *>";
// FIXME: Maybe force instantiation to make use of real template
// pattern.
HI.Documentation = "comment from primary";
}},
{// Template Type Parameter
R"cpp(
template <typename [[^T]] = int> void foo();
)cpp",
[](HoverInfo &HI) {
HI.Name = "T";
HI.Kind = index::SymbolKind::TemplateTypeParm;
HI.NamespaceScope = "";
HI.Definition = "typename T = int";
HI.LocalScope = "foo::";
HI.Type = "typename";
HI.AccessSpecifier = "public";
}},
{// TemplateTemplate Type Parameter
R"cpp(
template <template<typename> class [[^T]]> void foo();
)cpp",
[](HoverInfo &HI) {
HI.Name = "T";
HI.Kind = index::SymbolKind::TemplateTemplateParm;
HI.NamespaceScope = "";
HI.Definition = "template <typename> class T";
HI.LocalScope = "foo::";
HI.Type = "template <typename> class";
HI.AccessSpecifier = "public";
}},
{// NonType Template Parameter
R"cpp(
template <int [[^T]] = 5> void foo();
)cpp",
[](HoverInfo &HI) {
HI.Name = "T";
HI.Kind = index::SymbolKind::NonTypeTemplateParm;
HI.NamespaceScope = "";
HI.Definition = "int T = 5";
HI.LocalScope = "foo::";
HI.Type = "int";
HI.AccessSpecifier = "public";
}},
{// Getter
R"cpp(
struct X { int Y; float [[^y]]() { return Y; } };
)cpp",
[](HoverInfo &HI) {
HI.Name = "y";
HI.Kind = index::SymbolKind::InstanceMethod;
HI.NamespaceScope = "";
HI.Definition = "float y()";
HI.LocalScope = "X::";
HI.Documentation = "Trivial accessor for `Y`.";
HI.Type = "float ()";
HI.ReturnType = "float";
HI.Parameters.emplace();
HI.AccessSpecifier = "public";
}},
{// Setter
R"cpp(
struct X { int Y; void [[^setY]](float v) { Y = v; } };
)cpp",
[](HoverInfo &HI) {
HI.Name = "setY";
HI.Kind = index::SymbolKind::InstanceMethod;
HI.NamespaceScope = "";
HI.Definition = "void setY(float v)";
HI.LocalScope = "X::";
HI.Documentation = "Trivial setter for `Y`.";
HI.Type = "void (float)";
HI.ReturnType = "void";
HI.Parameters.emplace();
HI.Parameters->emplace_back();
HI.Parameters->back().Type = "float";
HI.Parameters->back().Name = "v";
HI.AccessSpecifier = "public";
}},
{// Setter (builder)
R"cpp(
struct X { int Y; X& [[^setY]](float v) { Y = v; return *this; } };
)cpp",
[](HoverInfo &HI) {
HI.Name = "setY";
HI.Kind = index::SymbolKind::InstanceMethod;
HI.NamespaceScope = "";
HI.Definition = "X &setY(float v)";
HI.LocalScope = "X::";
HI.Documentation = "Trivial setter for `Y`.";
HI.Type = "struct X &(float)";
HI.ReturnType = "struct X &";
HI.Parameters.emplace();
HI.Parameters->emplace_back();
HI.Parameters->back().Type = "float";
HI.Parameters->back().Name = "v";
HI.AccessSpecifier = "public";
}},
{// Field type initializer.
R"cpp(
struct X { int x = 2; };
X ^[[x]];
)cpp",
[](HoverInfo &HI) {
HI.Name = "x";
HI.Kind = index::SymbolKind::Variable;
HI.NamespaceScope = "";
HI.Definition = "X x";
HI.Type = "struct X";
}},
{// Don't crash on null types.
R"cpp(auto [^[[x]]] = 1; /*error-ok*/)cpp",
[](HoverInfo &HI) {
HI.Name = "x";
HI.Kind = index::SymbolKind::Variable;
HI.NamespaceScope = "";
HI.Definition = "";
HI.Type = "NULL TYPE";
// Bindings are in theory public members of an anonymous struct.
HI.AccessSpecifier = "public";
}},
{// Extra info for function call.
R"cpp(
void fun(int arg_a, int &arg_b) {};
void code() {
int a = 1, b = 2;
fun(a, [[^b]]);
}
)cpp",
[](HoverInfo &HI) {
HI.Name = "b";
HI.Kind = index::SymbolKind::Variable;
HI.NamespaceScope = "";
HI.Definition = "int b = 2";
HI.LocalScope = "code::";
HI.Value = "2";
HI.Type = "int";
HI.CalleeArgInfo.emplace();
HI.CalleeArgInfo->Name = "arg_b";
HI.CalleeArgInfo->Type = "int &";
HI.CallPassType.emplace();
HI.CallPassType->PassBy = PassMode::Ref;
HI.CallPassType->Converted = false;
}},
{// Extra info for method call.
R"cpp(
class C {
public:
void fun(int arg_a = 3, int arg_b = 4) {}
};
void code() {
int a = 1, b = 2;
C c;
c.fun([[^a]], b);
}
)cpp",
[](HoverInfo &HI) {
HI.Name = "a";
HI.Kind = index::SymbolKind::Variable;
HI.NamespaceScope = "";
HI.Definition = "int a = 1";
HI.LocalScope = "code::";
HI.Value = "1";
HI.Type = "int";
HI.CalleeArgInfo.emplace();
HI.CalleeArgInfo->Name = "arg_a";
HI.CalleeArgInfo->Type = "int";
HI.CalleeArgInfo->Default = "3";
HI.CallPassType.emplace();
HI.CallPassType->PassBy = PassMode::Value;
HI.CallPassType->Converted = false;
}},
};
for (const auto &Case : Cases) {
SCOPED_TRACE(Case.Code);
Annotations T(Case.Code);
TestTU TU = TestTU::withCode(T.code());
TU.ExtraArgs.push_back("-std=c++17");
// Types might be different depending on the target triplet, we chose a
// fixed one to make sure tests passes on different platform.
TU.ExtraArgs.push_back("--target=x86_64-pc-linux-gnu");
auto AST = TU.build();
auto H = getHover(AST, T.point(), format::getLLVMStyle(), nullptr);
ASSERT_TRUE(H);
HoverInfo Expected;
Expected.SymRange = T.range();
Case.ExpectedBuilder(Expected);
EXPECT_EQ(H->NamespaceScope, Expected.NamespaceScope);
EXPECT_EQ(H->LocalScope, Expected.LocalScope);
EXPECT_EQ(H->Name, Expected.Name);
EXPECT_EQ(H->Kind, Expected.Kind);
EXPECT_EQ(H->Documentation, Expected.Documentation);
EXPECT_EQ(H->Definition, Expected.Definition);
EXPECT_EQ(H->Type, Expected.Type);
EXPECT_EQ(H->ReturnType, Expected.ReturnType);
EXPECT_EQ(H->Parameters, Expected.Parameters);
EXPECT_EQ(H->TemplateParameters, Expected.TemplateParameters);
EXPECT_EQ(H->SymRange, Expected.SymRange);
EXPECT_EQ(H->Value, Expected.Value);
EXPECT_EQ(H->Size, Expected.Size);
EXPECT_EQ(H->Offset, Expected.Offset);
EXPECT_EQ(H->AccessSpecifier, Expected.AccessSpecifier);
EXPECT_EQ(H->CalleeArgInfo, Expected.CalleeArgInfo);
EXPECT_EQ(H->CallPassType, Expected.CallPassType);
}
}
TEST(Hover, CallPassType) {
const llvm::StringRef CodePrefix = R"cpp(
class Base {};
class Derived : public Base {};
class CustomClass {
public:
CustomClass() {}
CustomClass(const Base &x) {}
CustomClass(int &x) {}
CustomClass(float x) {}
};
void int_by_ref(int &x) {}
void int_by_const_ref(const int &x) {}
void int_by_value(int x) {}
void base_by_ref(Base &x) {}
void base_by_const_ref(const Base &x) {}
void base_by_value(Base x) {}
void float_by_value(float x) {}
void custom_by_value(CustomClass x) {}
void fun() {
int int_x;
int &int_ref = int_x;
const int &int_const_ref = int_x;
Base base;
const Base &base_const_ref = base;
Derived derived;
float float_x;
)cpp";
const llvm::StringRef CodeSuffix = "}";
struct {
const char *const Code;
HoverInfo::PassType::PassMode PassBy;
bool Converted;
} Tests[] = {
// Integer tests
{"int_by_value([[^int_x]]);", PassMode::Value, false},
{"int_by_ref([[^int_x]]);", PassMode::Ref, false},
{"int_by_const_ref([[^int_x]]);", PassMode::ConstRef, false},
{"int_by_value([[^int_ref]]);", PassMode::Value, false},
{"int_by_const_ref([[^int_ref]]);", PassMode::ConstRef, false},
{"int_by_const_ref([[^int_ref]]);", PassMode::ConstRef, false},
{"int_by_const_ref([[^int_const_ref]]);", PassMode::ConstRef, false},
// Custom class tests
{"base_by_ref([[^base]]);", PassMode::Ref, false},
{"base_by_const_ref([[^base]]);", PassMode::ConstRef, false},
{"base_by_const_ref([[^base_const_ref]]);", PassMode::ConstRef, false},
{"base_by_value([[^base]]);", PassMode::Value, false},
{"base_by_value([[^base_const_ref]]);", PassMode::Value, false},
{"base_by_ref([[^derived]]);", PassMode::Ref, false},
{"base_by_const_ref([[^derived]]);", PassMode::ConstRef, false},
{"base_by_value([[^derived]]);", PassMode::Value, false},
// Converted tests
{"float_by_value([[^int_x]]);", PassMode::Value, true},
{"float_by_value([[^int_ref]]);", PassMode::Value, true},
{"float_by_value([[^int_const_ref]]);", PassMode::Value, true},
{"custom_by_value([[^int_x]]);", PassMode::Ref, true},
{"custom_by_value([[^float_x]]);", PassMode::Value, true},
{"custom_by_value([[^base]]);", PassMode::ConstRef, true},
};
for (const auto &Test : Tests) {
SCOPED_TRACE(Test.Code);
const auto Code = (CodePrefix + Test.Code + CodeSuffix).str();
Annotations T(Code);
TestTU TU = TestTU::withCode(T.code());
TU.ExtraArgs.push_back("-std=c++17");
auto AST = TU.build();
auto H = getHover(AST, T.point(), format::getLLVMStyle(), nullptr);
ASSERT_TRUE(H);
EXPECT_EQ(H->CallPassType->PassBy, Test.PassBy);
EXPECT_EQ(H->CallPassType->Converted, Test.Converted);
}
}
TEST(Hover, NoHover) {
llvm::StringRef Tests[] = {
"^int main() {}",
"void foo() {^}",
R"cpp(// structured binding. Not supported yet
struct Bar {};
void foo() {
Bar a[2];
^auto [x,y] = a;
}
)cpp",
R"cpp(// Template auto parameter. Nothing (Not useful).
template<a^uto T>
void func() {
}
void foo() {
func<1>();
}
)cpp",
R"cpp(// non-named decls don't get hover. Don't crash!
^static_assert(1, "");
)cpp",
R"cpp(// non-evaluatable expr
template <typename T> void foo() {
(void)[[size^of]](T);
})cpp",
// literals
"auto x = t^rue;",
"auto x = '^A';",
"auto x = ^(int){42};",
"auto x = ^42.;",
"auto x = ^42.0i;",
"auto x = ^42;",
"auto x = ^nullptr;",
"auto x = ^\"asdf\";",
};
for (const auto &Test : Tests) {
SCOPED_TRACE(Test);
Annotations T(Test);
TestTU TU = TestTU::withCode(T.code());
TU.ExtraArgs.push_back("-std=c++17");
auto AST = TU.build();
auto H = getHover(AST, T.point(), format::getLLVMStyle(), nullptr);
ASSERT_FALSE(H);
}
}
TEST(Hover, All) {
struct {
const char *const Code;
const std::function<void(HoverInfo &)> ExpectedBuilder;
} Cases[] = {
{
R"cpp(// Local variable
int main() {
int bonjour;
^[[bonjour]] = 2;
int test1 = bonjour;
}
)cpp",
[](HoverInfo &HI) {
HI.Name = "bonjour";
HI.Kind = index::SymbolKind::Variable;
HI.NamespaceScope = "";
HI.LocalScope = "main::";
HI.Type = "int";
HI.Definition = "int bonjour";
}},
{
R"cpp(// Local variable in method
struct s {
void method() {
int bonjour;
^[[bonjour]] = 2;
}
};
)cpp",
[](HoverInfo &HI) {
HI.Name = "bonjour";
HI.Kind = index::SymbolKind::Variable;
HI.NamespaceScope = "";
HI.LocalScope = "s::method::";
HI.Type = "int";
HI.Definition = "int bonjour";
}},
{
R"cpp(// Struct
namespace ns1 {
struct MyClass {};
} // namespace ns1
int main() {
ns1::[[My^Class]]* Params;
}
)cpp",
[](HoverInfo &HI) {
HI.Name = "MyClass";
HI.Kind = index::SymbolKind::Struct;
HI.NamespaceScope = "ns1::";
HI.Definition = "struct MyClass {}";
}},
{
R"cpp(// Class
namespace ns1 {
class MyClass {};
} // namespace ns1
int main() {
ns1::[[My^Class]]* Params;
}
)cpp",