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//===- unittest/Tooling/LookupTest.cpp ------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "TestVisitor.h"
#include "clang/Tooling/Core/Lookup.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(), 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) {
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 Loc,
StringRef ReplacementString) {
const auto *FD = cast<CXXRecordDecl>(Loc.getDecl());
return tooling::replaceNestedName(
nullptr, 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");
}
} // end anonymous namespace
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