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-rw-r--r--unittests/Tooling/RecursiveASTVisitorTest.cpp525
1 files changed, 12 insertions, 513 deletions
diff --git a/unittests/Tooling/RecursiveASTVisitorTest.cpp b/unittests/Tooling/RecursiveASTVisitorTest.cpp
index a1a93a5..c287045 100644
--- a/unittests/Tooling/RecursiveASTVisitorTest.cpp
+++ b/unittests/Tooling/RecursiveASTVisitorTest.cpp
@@ -14,85 +14,6 @@ using namespace clang;
namespace {
-class TypeLocVisitor : public ExpectedLocationVisitor<TypeLocVisitor> {
-public:
- bool VisitTypeLoc(TypeLoc TypeLocation) {
- Match(TypeLocation.getType().getAsString(), TypeLocation.getBeginLoc());
- return true;
- }
-};
-
-class DeclRefExprVisitor : public ExpectedLocationVisitor<DeclRefExprVisitor> {
-public:
- bool VisitDeclRefExpr(DeclRefExpr *Reference) {
- Match(Reference->getNameInfo().getAsString(), Reference->getLocation());
- return true;
- }
-};
-
-class VarDeclVisitor : public ExpectedLocationVisitor<VarDeclVisitor> {
-public:
- bool VisitVarDecl(VarDecl *Variable) {
- Match(Variable->getNameAsString(), Variable->getLocStart());
- return true;
- }
-};
-
-class ParmVarDeclVisitorForImplicitCode :
- public ExpectedLocationVisitor<ParmVarDeclVisitorForImplicitCode> {
-public:
- bool shouldVisitImplicitCode() const { return true; }
-
- bool VisitParmVarDecl(ParmVarDecl *ParamVar) {
- Match(ParamVar->getNameAsString(), ParamVar->getLocStart());
- return true;
- }
-};
-
-class CXXMemberCallVisitor
- : public ExpectedLocationVisitor<CXXMemberCallVisitor> {
-public:
- bool VisitCXXMemberCallExpr(CXXMemberCallExpr *Call) {
- Match(Call->getMethodDecl()->getQualifiedNameAsString(),
- Call->getLocStart());
- return true;
- }
-};
-
-class NamedDeclVisitor
- : public ExpectedLocationVisitor<NamedDeclVisitor> {
-public:
- bool VisitNamedDecl(NamedDecl *Decl) {
- std::string NameWithTemplateArgs;
- llvm::raw_string_ostream OS(NameWithTemplateArgs);
- Decl->getNameForDiagnostic(OS,
- Decl->getASTContext().getPrintingPolicy(),
- true);
- Match(OS.str(), Decl->getLocation());
- return true;
- }
-};
-
-class CXXOperatorCallExprTraverser
- : public ExpectedLocationVisitor<CXXOperatorCallExprTraverser> {
-public:
- // Use Traverse, not Visit, to check that data recursion optimization isn't
- // bypassing the call of this function.
- bool TraverseCXXOperatorCallExpr(CXXOperatorCallExpr *CE) {
- Match(getOperatorSpelling(CE->getOperator()), CE->getExprLoc());
- return ExpectedLocationVisitor<CXXOperatorCallExprTraverser>::
- TraverseCXXOperatorCallExpr(CE);
- }
-};
-
-class ParenExprVisitor : public ExpectedLocationVisitor<ParenExprVisitor> {
-public:
- bool VisitParenExpr(ParenExpr *Parens) {
- Match("", Parens->getExprLoc());
- return true;
- }
-};
-
class LambdaExprVisitor : public ExpectedLocationVisitor<LambdaExprVisitor> {
public:
bool VisitLambdaExpr(LambdaExpr *Lambda) {
@@ -117,429 +38,6 @@ private:
std::stack<LambdaExpr *> PendingBodies;
};
-// Matches the (optional) capture-default of a lambda-introducer.
-class LambdaDefaultCaptureVisitor
- : public ExpectedLocationVisitor<LambdaDefaultCaptureVisitor> {
-public:
- bool VisitLambdaExpr(LambdaExpr *Lambda) {
- if (Lambda->getCaptureDefault() != LCD_None) {
- Match("", Lambda->getCaptureDefaultLoc());
- }
- return true;
- }
-};
-
-class TemplateArgumentLocTraverser
- : public ExpectedLocationVisitor<TemplateArgumentLocTraverser> {
-public:
- bool TraverseTemplateArgumentLoc(const TemplateArgumentLoc &ArgLoc) {
- std::string ArgStr;
- llvm::raw_string_ostream Stream(ArgStr);
- const TemplateArgument &Arg = ArgLoc.getArgument();
-
- Arg.print(Context->getPrintingPolicy(), Stream);
- Match(Stream.str(), ArgLoc.getLocation());
- return ExpectedLocationVisitor<TemplateArgumentLocTraverser>::
- TraverseTemplateArgumentLoc(ArgLoc);
- }
-};
-
-class CXXBoolLiteralExprVisitor
- : public ExpectedLocationVisitor<CXXBoolLiteralExprVisitor> {
-public:
- bool VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *BE) {
- if (BE->getValue())
- Match("true", BE->getLocation());
- else
- Match("false", BE->getLocation());
- return true;
- }
-};
-
-// Test RAV visits parameter variable declaration of the implicit
-// copy assignment operator and implicit copy constructor.
-TEST(RecursiveASTVisitor, VisitsParmVarDeclForImplicitCode) {
- ParmVarDeclVisitorForImplicitCode Visitor;
- // Match parameter variable name of implicit copy assignment operator and
- // implicit copy constructor.
- // This parameter name does not have a valid IdentifierInfo, and shares
- // same SourceLocation with its class declaration, so we match an empty name
- // with the class' source location.
- Visitor.ExpectMatch("", 1, 7);
- Visitor.ExpectMatch("", 3, 7);
- EXPECT_TRUE(Visitor.runOver(
- "class X {};\n"
- "void foo(X a, X b) {a = b;}\n"
- "class Y {};\n"
- "void bar(Y a) {Y b = a;}"));
-}
-
-TEST(RecursiveASTVisitor, VisitsBaseClassDeclarations) {
- TypeLocVisitor Visitor;
- Visitor.ExpectMatch("class X", 1, 30);
- EXPECT_TRUE(Visitor.runOver("class X {}; class Y : public X {};"));
-}
-
-TEST(RecursiveASTVisitor, VisitsCXXBaseSpecifiersOfForwardDeclaredClass) {
- TypeLocVisitor Visitor;
- Visitor.ExpectMatch("class X", 3, 18);
- EXPECT_TRUE(Visitor.runOver(
- "class Y;\n"
- "class X {};\n"
- "class Y : public X {};"));
-}
-
-TEST(RecursiveASTVisitor, VisitsCXXBaseSpecifiersWithIncompleteInnerClass) {
- TypeLocVisitor Visitor;
- Visitor.ExpectMatch("class X", 2, 18);
- EXPECT_TRUE(Visitor.runOver(
- "class X {};\n"
- "class Y : public X { class Z; };"));
-}
-
-TEST(RecursiveASTVisitor, VisitsCXXBaseSpecifiersOfSelfReferentialType) {
- TypeLocVisitor Visitor;
- Visitor.ExpectMatch("X<class Y>", 2, 18);
- EXPECT_TRUE(Visitor.runOver(
- "template<typename T> class X {};\n"
- "class Y : public X<Y> {};"));
-}
-
-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, VisitsCXXForRangeStmtLoopVariable) {
- VarDeclVisitor Visitor;
- Visitor.ExpectMatch("i", 2, 17);
- EXPECT_TRUE(Visitor.runOver(
- "int x[5];\n"
- "void f() { for (int i : x) {} }",
- VarDeclVisitor::Lang_CXX11));
-}
-
-TEST(RecursiveASTVisitor, VisitsCallExpr) {
- DeclRefExprVisitor Visitor;
- Visitor.ExpectMatch("x", 1, 22);
- EXPECT_TRUE(Visitor.runOver(
- "void x(); void y() { x(); }"));
-}
-
-TEST(RecursiveASTVisitor, VisitsCallInTemplateInstantiation) {
- CXXMemberCallVisitor Visitor;
- Visitor.ExpectMatch("Y::x", 3, 3);
- EXPECT_TRUE(Visitor.runOver(
- "struct Y { void x(); };\n"
- "template<typename T> void y(T t) {\n"
- " t.x();\n"
- "}\n"
- "void foo() { y<Y>(Y()); }"));
-}
-
-TEST(RecursiveASTVisitor, VisitsCallInNestedFunctionTemplateInstantiation) {
- CXXMemberCallVisitor Visitor;
- Visitor.ExpectMatch("Y::x", 4, 5);
- EXPECT_TRUE(Visitor.runOver(
- "struct Y { void x(); };\n"
- "template<typename T> struct Z {\n"
- " template<typename U> static void f() {\n"
- " T().x();\n"
- " }\n"
- "};\n"
- "void foo() { Z<Y>::f<int>(); }"));
-}
-
-TEST(RecursiveASTVisitor, VisitsCallInNestedClassTemplateInstantiation) {
- CXXMemberCallVisitor Visitor;
- Visitor.ExpectMatch("A::x", 5, 7);
- EXPECT_TRUE(Visitor.runOver(
- "template <typename T1> struct X {\n"
- " template <typename T2> struct Y {\n"
- " void f() {\n"
- " T2 y;\n"
- " y.x();\n"
- " }\n"
- " };\n"
- "};\n"
- "struct A { void x(); };\n"
- "int main() {\n"
- " (new X<A>::Y<A>())->f();\n"
- "}"));
-}
-
-/* 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, VisitsCallInPartialTemplateSpecialization) {
- CXXMemberCallVisitor Visitor;
- Visitor.ExpectMatch("A::x", 6, 20);
- EXPECT_TRUE(Visitor.runOver(
- "template <typename T1> struct X {\n"
- " template <typename T2, bool B> struct Y { void g(); };\n"
- "};\n"
- "template <typename T1> template <typename T2>\n"
- "struct X<T1>::Y<T2, true> {\n"
- " void f() { T2 y; y.x(); }\n"
- "};\n"
- "struct A { void x(); };\n"
- "int main() {\n"
- " (new X<A>::Y<A, true>())->f();\n"
- "}\n"));
-}
-
-TEST(RecursiveASTVisitor, VisitsExplicitTemplateSpecialization) {
- CXXMemberCallVisitor Visitor;
- Visitor.ExpectMatch("A::f", 4, 5);
- EXPECT_TRUE(Visitor.runOver(
- "struct A {\n"
- " void f() const {}\n"
- " template<class T> void g(const T& t) const {\n"
- " t.f();\n"
- " }\n"
- "};\n"
- "template void A::g(const A& a) const;\n"));
-}
-
-TEST(RecursiveASTVisitor, VisitsPartialTemplateSpecialization) {
- // From cfe-commits/Week-of-Mon-20100830/033998.html
- // Contrary to the approach suggested in that email, we visit all
- // specializations when we visit the primary template. Visiting them when we
- // visit the associated specialization is problematic for specializations of
- // template members of class templates.
- NamedDeclVisitor Visitor;
- Visitor.ExpectMatch("A<bool>", 1, 26);
- Visitor.ExpectMatch("A<char *>", 2, 26);
- EXPECT_TRUE(Visitor.runOver(
- "template <class T> class A {};\n"
- "template <class T> class A<T*> {};\n"
- "A<bool> ab;\n"
- "A<char*> acp;\n"));
-}
-
-TEST(RecursiveASTVisitor, VisitsUndefinedClassTemplateSpecialization) {
- NamedDeclVisitor Visitor;
- Visitor.ExpectMatch("A<int>", 1, 29);
- EXPECT_TRUE(Visitor.runOver(
- "template<typename T> struct A;\n"
- "A<int> *p;\n"));
-}
-
-TEST(RecursiveASTVisitor, VisitsNestedUndefinedClassTemplateSpecialization) {
- NamedDeclVisitor Visitor;
- Visitor.ExpectMatch("A<int>::B<char>", 2, 31);
- EXPECT_TRUE(Visitor.runOver(
- "template<typename T> struct A {\n"
- " template<typename U> struct B;\n"
- "};\n"
- "A<int>::B<char> *p;\n"));
-}
-
-TEST(RecursiveASTVisitor, VisitsUndefinedFunctionTemplateSpecialization) {
- NamedDeclVisitor Visitor;
- Visitor.ExpectMatch("A<int>", 1, 26);
- EXPECT_TRUE(Visitor.runOver(
- "template<typename T> int A();\n"
- "int k = A<int>();\n"));
-}
-
-TEST(RecursiveASTVisitor, VisitsNestedUndefinedFunctionTemplateSpecialization) {
- NamedDeclVisitor Visitor;
- Visitor.ExpectMatch("A<int>::B<char>", 2, 35);
- EXPECT_TRUE(Visitor.runOver(
- "template<typename T> struct A {\n"
- " template<typename U> static int B();\n"
- "};\n"
- "int k = A<int>::B<char>();\n"));
-}
-
-TEST(RecursiveASTVisitor, NoRecursionInSelfFriend) {
- // From cfe-commits/Week-of-Mon-20100830/033977.html
- NamedDeclVisitor Visitor;
- Visitor.ExpectMatch("vector_iterator<int>", 2, 7);
- EXPECT_TRUE(Visitor.runOver(
- "template<typename Container>\n"
- "class vector_iterator {\n"
- " template <typename C> friend class vector_iterator;\n"
- "};\n"
- "vector_iterator<int> it_int;\n"));
-}
-
-TEST(RecursiveASTVisitor, TraversesOverloadedOperator) {
- CXXOperatorCallExprTraverser Visitor;
- Visitor.ExpectMatch("()", 4, 9);
- EXPECT_TRUE(Visitor.runOver(
- "struct A {\n"
- " int operator()();\n"
- "} a;\n"
- "int k = a();\n"));
-}
-
-TEST(RecursiveASTVisitor, VisitsParensDuringDataRecursion) {
- ParenExprVisitor Visitor;
- Visitor.ExpectMatch("", 1, 9);
- EXPECT_TRUE(Visitor.runOver("int k = (4) + 9;\n"));
-}
-
-TEST(RecursiveASTVisitor, VisitsClassTemplateNonTypeParmDefaultArgument) {
- CXXBoolLiteralExprVisitor Visitor;
- Visitor.ExpectMatch("true", 2, 19);
- EXPECT_TRUE(Visitor.runOver(
- "template<bool B> class X;\n"
- "template<bool B = true> class Y;\n"
- "template<bool B> class Y {};\n"));
-}
-
-TEST(RecursiveASTVisitor, VisitsClassTemplateTypeParmDefaultArgument) {
- TypeLocVisitor Visitor;
- Visitor.ExpectMatch("class X", 2, 23);
- EXPECT_TRUE(Visitor.runOver(
- "class X;\n"
- "template<typename T = X> class Y;\n"
- "template<typename T> class Y {};\n"));
-}
-
-TEST(RecursiveASTVisitor, VisitsClassTemplateTemplateParmDefaultArgument) {
- TemplateArgumentLocTraverser Visitor;
- Visitor.ExpectMatch("X", 2, 40);
- EXPECT_TRUE(Visitor.runOver(
- "template<typename T> class X;\n"
- "template<template <typename> class T = X> class Y;\n"
- "template<template <typename> class T> class Y {};\n"));
-}
-
-// A visitor that visits implicit declarations and matches constructors.
-class ImplicitCtorVisitor
- : public ExpectedLocationVisitor<ImplicitCtorVisitor> {
-public:
- bool shouldVisitImplicitCode() const { return true; }
-
- bool VisitCXXConstructorDecl(CXXConstructorDecl* Ctor) {
- if (Ctor->isImplicit()) { // Was not written in source code
- if (const CXXRecordDecl* Class = Ctor->getParent()) {
- Match(Class->getName(), Ctor->getLocation());
- }
- }
- return true;
- }
-};
-
-TEST(RecursiveASTVisitor, VisitsImplicitCopyConstructors) {
- ImplicitCtorVisitor Visitor;
- Visitor.ExpectMatch("Simple", 2, 8);
- // Note: Clang lazily instantiates implicit declarations, so we need
- // to use them in order to force them to appear in the AST.
- EXPECT_TRUE(Visitor.runOver(
- "struct WithCtor { WithCtor(); }; \n"
- "struct Simple { Simple(); WithCtor w; }; \n"
- "int main() { Simple s; Simple t(s); }\n"));
-}
-
-/// \brief A visitor that optionally includes implicit code and matches
-/// CXXConstructExpr.
-///
-/// The name recorded for the match is the name of the class whose constructor
-/// is invoked by the CXXConstructExpr, not the name of the class whose
-/// constructor the CXXConstructExpr is contained in.
-class ConstructExprVisitor
- : public ExpectedLocationVisitor<ConstructExprVisitor> {
-public:
- ConstructExprVisitor() : ShouldVisitImplicitCode(false) {}
-
- bool shouldVisitImplicitCode() const { return ShouldVisitImplicitCode; }
-
- void setShouldVisitImplicitCode(bool NewValue) {
- ShouldVisitImplicitCode = NewValue;
- }
-
- bool VisitCXXConstructExpr(CXXConstructExpr* Expr) {
- if (const CXXConstructorDecl* Ctor = Expr->getConstructor()) {
- if (const CXXRecordDecl* Class = Ctor->getParent()) {
- Match(Class->getName(), Expr->getLocation());
- }
- }
- return true;
- }
-
- private:
- bool ShouldVisitImplicitCode;
-};
-
-TEST(RecursiveASTVisitor, CanVisitImplicitMemberInitializations) {
- ConstructExprVisitor Visitor;
- Visitor.setShouldVisitImplicitCode(true);
- Visitor.ExpectMatch("WithCtor", 2, 8);
- // Simple has a constructor that implicitly initializes 'w'. Test
- // that a visitor that visits implicit code visits that initialization.
- // Note: Clang lazily instantiates implicit declarations, so we need
- // to use them in order to force them to appear in the AST.
- EXPECT_TRUE(Visitor.runOver(
- "struct WithCtor { WithCtor(); }; \n"
- "struct Simple { WithCtor w; }; \n"
- "int main() { Simple s; }\n"));
-}
-
-// The same as CanVisitImplicitMemberInitializations, but checking that the
-// visits are omitted when the visitor does not include implicit code.
-TEST(RecursiveASTVisitor, CanSkipImplicitMemberInitializations) {
- ConstructExprVisitor Visitor;
- Visitor.setShouldVisitImplicitCode(false);
- Visitor.DisallowMatch("WithCtor", 2, 8);
- // Simple has a constructor that implicitly initializes 'w'. Test
- // that a visitor that skips implicit code skips that initialization.
- // Note: Clang lazily instantiates implicit declarations, so we need
- // to use them in order to force them to appear in the AST.
- EXPECT_TRUE(Visitor.runOver(
- "struct WithCtor { WithCtor(); }; \n"
- "struct Simple { WithCtor w; }; \n"
- "int main() { Simple s; }\n"));
-}
-
-TEST(RecursiveASTVisitor, VisitsExtension) {
- DeclRefExprVisitor Visitor;
- Visitor.ExpectMatch("s", 1, 24);
- EXPECT_TRUE(Visitor.runOver(
- "int s = __extension__ (s);\n"));
-}
-
-TEST(RecursiveASTVisitor, VisitsCompoundLiteralType) {
- TypeLocVisitor Visitor;
- Visitor.ExpectMatch("struct S", 1, 26);
- EXPECT_TRUE(Visitor.runOver(
- "int f() { return (struct S { int a; }){.a = 0}.a; }",
- TypeLocVisitor::Lang_C));
-}
-
-TEST(RecursiveASTVisitor, VisitsObjCPropertyType) {
- TypeLocVisitor Visitor;
- Visitor.ExpectMatch("NSNumber", 2, 33);
- EXPECT_TRUE(Visitor.runOver(
- "@class NSNumber; \n"
- "@interface A @property (retain) NSNumber *x; @end\n",
- TypeLocVisitor::Lang_OBJC));
-}
-
TEST(RecursiveASTVisitor, VisitsLambdaExpr) {
LambdaExprVisitor Visitor;
Visitor.ExpectMatch("", 1, 12);
@@ -554,6 +52,18 @@ TEST(RecursiveASTVisitor, TraverseLambdaBodyCanBeOverridden) {
EXPECT_TRUE(Visitor.allBodiesHaveBeenTraversed());
}
+// Matches the (optional) capture-default of a lambda-introducer.
+class LambdaDefaultCaptureVisitor
+ : public ExpectedLocationVisitor<LambdaDefaultCaptureVisitor> {
+public:
+ bool VisitLambdaExpr(LambdaExpr *Lambda) {
+ if (Lambda->getCaptureDefault() != LCD_None) {
+ Match("", Lambda->getCaptureDefaultLoc());
+ }
+ return true;
+ }
+};
+
TEST(RecursiveASTVisitor, HasCaptureDefaultLoc) {
LambdaDefaultCaptureVisitor Visitor;
Visitor.ExpectMatch("", 1, 20);
@@ -561,16 +71,6 @@ TEST(RecursiveASTVisitor, HasCaptureDefaultLoc) {
LambdaDefaultCaptureVisitor::Lang_CXX11));
}
-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));
-}
-
// Checks for lambda classes that are not marked as implicitly-generated.
// (There should be none.)
class ClassVisitor : public ExpectedLocationVisitor<ClassVisitor> {
@@ -598,7 +98,6 @@ TEST(RecursiveASTVisitor, LambdaClosureTypesAreImplicit) {
}
-
// Check to ensure that attributes and expressions within them are being
// visited.
class AttrVisitor : public ExpectedLocationVisitor<AttrVisitor> {
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