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//===- unittest/Tooling/LookupTest.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 "clang/Tooling/Refactoring/Lookup.h"
#include "TestVisitor.h"
using namespace clang;
namespace {
struct GetDeclsVisitor : TestVisitor<GetDeclsVisitor> {
std::function<void(CallExpr *)> OnCall;
std::function<void(RecordTypeLoc)> OnRecordTypeLoc;
SmallVector<Decl *, 4> DeclStack;
bool VisitCallExpr(CallExpr *Expr) {
if (OnCall)
OnCall(Expr);
return true;
}
bool VisitRecordTypeLoc(RecordTypeLoc Loc) {
if (OnRecordTypeLoc)
OnRecordTypeLoc(Loc);
return true;
}
bool TraverseDecl(Decl *D) {
DeclStack.push_back(D);
bool Ret = TestVisitor::TraverseDecl(D);
DeclStack.pop_back();
return Ret;
}
};
TEST(LookupTest, replaceNestedFunctionName) {
GetDeclsVisitor Visitor;
auto replaceCallExpr = [&](const CallExpr *Expr,
StringRef ReplacementString) {
const auto *Callee = cast<DeclRefExpr>(Expr->getCallee()->IgnoreImplicit());
const ValueDecl *FD = Callee->getDecl();
return tooling::replaceNestedName(
Callee->getQualifier(), Callee->getLocation(),
Visitor.DeclStack.back()->getDeclContext(), FD, ReplacementString);
};
Visitor.OnCall = [&](CallExpr *Expr) {
EXPECT_EQ("bar", replaceCallExpr(Expr, "::bar"));
};
Visitor.runOver("namespace a { void foo(); }\n"
"namespace a { void f() { foo(); } }\n");
Visitor.OnCall = [&](CallExpr *Expr) {
EXPECT_EQ("bar", replaceCallExpr(Expr, "::a::bar"));
};
Visitor.runOver("namespace a { void foo(); }\n"
"namespace a { void f() { foo(); } }\n");
Visitor.OnCall = [&](CallExpr *Expr) {
EXPECT_EQ("a::bar", replaceCallExpr(Expr, "::a::bar"));
};
Visitor.runOver("namespace a { void foo(); }\n"
"namespace b { void f() { a::foo(); } }\n");
Visitor.OnCall = [&](CallExpr *Expr) {
EXPECT_EQ("::a::bar", replaceCallExpr(Expr, "::a::bar"));
};
Visitor.runOver("namespace a { void foo(); }\n"
"namespace b { namespace a { void foo(); }\n"
"void f() { a::foo(); } }\n");
Visitor.OnCall = [&](CallExpr *Expr) {
EXPECT_EQ("c::bar", replaceCallExpr(Expr, "::a::c::bar"));
};
Visitor.runOver("namespace a { namespace b { void foo(); }\n"
"void f() { b::foo(); } }\n");
Visitor.OnCall = [&](CallExpr *Expr) {
EXPECT_EQ("bar", replaceCallExpr(Expr, "::a::bar"));
};
Visitor.runOver("namespace a { namespace b { void foo(); }\n"
"void f() { b::foo(); } }\n");
Visitor.OnCall = [&](CallExpr *Expr) {
EXPECT_EQ("bar", replaceCallExpr(Expr, "::bar"));
};
Visitor.runOver("void foo(); void f() { foo(); }\n");
Visitor.OnCall = [&](CallExpr *Expr) {
EXPECT_EQ("::bar", replaceCallExpr(Expr, "::bar"));
};
Visitor.runOver("void foo(); void f() { ::foo(); }\n");
Visitor.OnCall = [&](CallExpr *Expr) {
EXPECT_EQ("a::bar", replaceCallExpr(Expr, "::a::bar"));
};
Visitor.runOver("namespace a { void foo(); }\nvoid f() { a::foo(); }\n");
Visitor.OnCall = [&](CallExpr *Expr) {
EXPECT_EQ("a::bar", replaceCallExpr(Expr, "::a::bar"));
};
Visitor.runOver("namespace a { int foo(); }\nauto f = a::foo();\n");
Visitor.OnCall = [&](CallExpr *Expr) {
EXPECT_EQ("bar", replaceCallExpr(Expr, "::a::bar"));
};
Visitor.runOver(
"namespace a { int foo(); }\nusing a::foo;\nauto f = foo();\n");
Visitor.OnCall = [&](CallExpr *Expr) {
EXPECT_EQ("c::bar", replaceCallExpr(Expr, "::a::c::bar"));
};
Visitor.runOver("namespace a { namespace b { void foo(); } }\n"
"namespace a { namespace b { namespace {"
"void f() { foo(); }"
"} } }\n");
Visitor.OnCall = [&](CallExpr *Expr) {
EXPECT_EQ("x::bar", replaceCallExpr(Expr, "::a::x::bar"));
};
Visitor.runOver("namespace a { namespace b { void foo(); } }\n"
"namespace a { namespace b { namespace c {"
"void f() { foo(); }"
"} } }\n");
// If the shortest name is ambiguous, we need to add more qualifiers.
Visitor.OnCall = [&](CallExpr *Expr) {
EXPECT_EQ("a::y::bar", replaceCallExpr(Expr, "::a::y::bar"));
};
Visitor.runOver(R"(
namespace a {
namespace b {
namespace x { void foo() {} }
namespace y { void foo() {} }
}
}
namespace a {
namespace b {
void f() { x::foo(); }
}
})");
Visitor.OnCall = [&](CallExpr *Expr) {
// y::bar would be ambiguous due to "a::b::y".
EXPECT_EQ("::y::bar", replaceCallExpr(Expr, "::y::bar"));
};
Visitor.runOver(R"(
namespace a {
namespace b {
void foo() {}
namespace y { }
}
}
namespace a {
namespace b {
void f() { foo(); }
}
})");
Visitor.OnCall = [&](CallExpr *Expr) {
EXPECT_EQ("y::bar", replaceCallExpr(Expr, "::y::bar"));
};
Visitor.runOver(R"(
namespace a {
namespace b {
namespace x { void foo() {} }
namespace y { void foo() {} }
}
}
void f() { a::b::x::foo(); }
)");
}
TEST(LookupTest, replaceNestedClassName) {
GetDeclsVisitor Visitor;
auto replaceRecordTypeLoc = [&](RecordTypeLoc TLoc,
StringRef ReplacementString) {
const auto *FD = cast<CXXRecordDecl>(TLoc.getDecl());
return tooling::replaceNestedName(
nullptr, TLoc.getBeginLoc(), Visitor.DeclStack.back()->getDeclContext(),
FD, ReplacementString);
};
Visitor.OnRecordTypeLoc = [&](RecordTypeLoc Type) {
// Filter Types by name since there are other `RecordTypeLoc` in the test
// file.
if (Type.getDecl()->getQualifiedNameAsString() == "a::b::Foo") {
EXPECT_EQ("x::Bar", replaceRecordTypeLoc(Type, "::a::x::Bar"));
}
};
Visitor.runOver("namespace a { namespace b {\n"
"class Foo;\n"
"namespace c { Foo f();; }\n"
"} }\n");
Visitor.OnRecordTypeLoc = [&](RecordTypeLoc Type) {
// Filter Types by name since there are other `RecordTypeLoc` in the test
// file.
// `a::b::Foo` in using shadow decl is not `TypeLoc`.
if (Type.getDecl()->getQualifiedNameAsString() == "a::b::Foo") {
EXPECT_EQ("Bar", replaceRecordTypeLoc(Type, "::a::x::Bar"));
}
};
Visitor.runOver("namespace a { namespace b { class Foo {}; } }\n"
"namespace c { using a::b::Foo; Foo f();; }\n");
// Rename TypeLoc `x::y::Old` to new name `x::Foo` at [0] and check that the
// type is replaced with "Foo" instead of "x::Foo". Although there is a symbol
// `x::y::Foo` in c.cc [1], it should not make "Foo" at [0] ambiguous because
// it's not visible at [0].
Visitor.OnRecordTypeLoc = [&](RecordTypeLoc Type) {
if (Type.getDecl()->getQualifiedNameAsString() == "x::y::Old") {
EXPECT_EQ("Foo", replaceRecordTypeLoc(Type, "::x::Foo"));
}
};
Visitor.runOver(R"(
// a.h
namespace x {
namespace y {
class Old {};
class Other {};
}
}
// b.h
namespace x {
namespace y {
// This is to be renamed to x::Foo
// The expected replacement is "Foo".
Old f; // [0].
}
}
// c.cc
namespace x {
namespace y {
using Foo = ::x::y::Other; // [1]
}
}
)");
}
} // end anonymous namespace
|
