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| //===- unittest/Tooling/RecursiveASTVisitorTests/DeclRefExpr.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 "TestVisitor.h"
using namespace clang;
namespace {
class DeclRefExprVisitor : public ExpectedLocationVisitor<DeclRefExprVisitor> {
public:
DeclRefExprVisitor() : ShouldVisitImplicitCode(false) {}
bool shouldVisitImplicitCode() const { return ShouldVisitImplicitCode; }
void setShouldVisitImplicitCode(bool NewValue) {
ShouldVisitImplicitCode = NewValue;
}
bool VisitDeclRefExpr(DeclRefExpr *Reference) {
Match(Reference->getNameInfo().getAsString(), Reference->getLocation());
return true;
}
private:
bool ShouldVisitImplicitCode;
};
TEST(RecursiveASTVisitor, VisitsBaseClassTemplateArguments) {
DeclRefExprVisitor Visitor;
Visitor.ExpectMatch("x", 2, 3);
EXPECT_TRUE(Visitor.runOver(
"void x(); template <void (*T)()> class X {};\nX<x> y;"));
}
TEST(RecursiveASTVisitor, VisitsCXXForRangeStmtRange) {
DeclRefExprVisitor Visitor;
Visitor.ExpectMatch("x", 2, 25);
Visitor.ExpectMatch("x", 2, 30);
EXPECT_TRUE(Visitor.runOver(
"int x[5];\n"
"void f() { for (int i : x) { x[0] = 1; } }",
DeclRefExprVisitor::Lang_CXX11));
}
TEST(RecursiveASTVisitor, VisitsCallExpr) {
DeclRefExprVisitor Visitor;
Visitor.ExpectMatch("x", 1, 22);
EXPECT_TRUE(Visitor.runOver(
"void x(); void y() { x(); }"));
}
TEST(RecursiveASTVisitor, VisitsExplicitLambdaCaptureInit) {
DeclRefExprVisitor Visitor;
Visitor.ExpectMatch("i", 1, 20);
EXPECT_TRUE(Visitor.runOver(
"void f() { int i; [i]{}; }",
DeclRefExprVisitor::Lang_CXX11));
}
TEST(RecursiveASTVisitor, VisitsUseOfImplicitLambdaCapture) {
DeclRefExprVisitor Visitor;
Visitor.ExpectMatch("i", 1, 24);
EXPECT_TRUE(Visitor.runOver(
"void f() { int i; [=]{ i; }; }",
DeclRefExprVisitor::Lang_CXX11));
}
TEST(RecursiveASTVisitor, VisitsImplicitLambdaCaptureInit) {
DeclRefExprVisitor Visitor;
Visitor.setShouldVisitImplicitCode(true);
// We're expecting "i" to be visited twice: once for the initialization expr
// for the captured variable "i" outside of the lambda body, and again for
// the use of "i" inside the lambda.
Visitor.ExpectMatch("i", 1, 20, /*Times=*/1);
Visitor.ExpectMatch("i", 1, 24, /*Times=*/1);
EXPECT_TRUE(Visitor.runOver(
"void f() { int i; [=]{ i; }; }",
DeclRefExprVisitor::Lang_CXX11));
}
TEST(RecursiveASTVisitor, VisitsLambdaInitCaptureInit) {
DeclRefExprVisitor Visitor;
Visitor.ExpectMatch("i", 1, 24);
EXPECT_TRUE(Visitor.runOver(
"void f() { int i; [a = i + 1]{}; }",
DeclRefExprVisitor::Lang_CXX14));
}
/* FIXME: According to Richard Smith this is a bug in the AST.
TEST(RecursiveASTVisitor, VisitsBaseClassTemplateArgumentsInInstantiation) {
DeclRefExprVisitor Visitor;
Visitor.ExpectMatch("x", 3, 43);
EXPECT_TRUE(Visitor.runOver(
"template <typename T> void x();\n"
"template <void (*T)()> class X {};\n"
"template <typename T> class Y : public X< x<T> > {};\n"
"Y<int> y;"));
}
*/
TEST(RecursiveASTVisitor, VisitsExtension) {
DeclRefExprVisitor Visitor;
Visitor.ExpectMatch("s", 1, 24);
EXPECT_TRUE(Visitor.runOver(
"int s = __extension__ (s);\n"));
}
TEST(RecursiveASTVisitor, VisitsCopyExprOfBlockDeclCapture) {
DeclRefExprVisitor Visitor;
Visitor.ExpectMatch("x", 3, 24);
EXPECT_TRUE(Visitor.runOver("void f(int(^)(int)); \n"
"void g() { \n"
" f([&](int x){ return x; }); \n"
"}",
DeclRefExprVisitor::Lang_OBJCXX11));
}
} // end anonymous namespace
|