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-rw-r--r--unittests/AST/PostOrderASTVisitor.cpp128
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diff --git a/unittests/AST/PostOrderASTVisitor.cpp b/unittests/AST/PostOrderASTVisitor.cpp
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--- a/unittests/AST/PostOrderASTVisitor.cpp
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-//===- unittests/AST/PostOrderASTVisitor.cpp - Declaration printer tests --===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file contains tests for the post-order traversing functionality
-// of RecursiveASTVisitor.
-//
-//===----------------------------------------------------------------------===//
-
-#include "clang/AST/RecursiveASTVisitor.h"
-#include "clang/Tooling/Tooling.h"
-#include "gtest/gtest.h"
-
-using namespace clang;
-
-namespace {
-
- class RecordingVisitor
- : public RecursiveASTVisitor<RecordingVisitor> {
-
- bool VisitPostOrder;
- public:
- explicit RecordingVisitor(bool VisitPostOrder)
- : VisitPostOrder(VisitPostOrder) {
- }
-
- // List of visited nodes during traversal.
- std::vector<std::string> VisitedNodes;
-
- bool shouldTraversePostOrder() const { return VisitPostOrder; }
-
- bool VisitUnaryOperator(UnaryOperator *Op) {
- VisitedNodes.push_back(Op->getOpcodeStr(Op->getOpcode()));
- return true;
- }
-
- bool VisitBinaryOperator(BinaryOperator *Op) {
- VisitedNodes.push_back(Op->getOpcodeStr());
- return true;
- }
-
- bool VisitIntegerLiteral(IntegerLiteral *Lit) {
- VisitedNodes.push_back(Lit->getValue().toString(10, false));
- return true;
- }
-
- bool VisitVarDecl(VarDecl* D) {
- VisitedNodes.push_back(D->getNameAsString());
- return true;
- }
-
- bool VisitCXXMethodDecl(CXXMethodDecl *D) {
- VisitedNodes.push_back(D->getQualifiedNameAsString());
- return true;
- }
-
- bool VisitReturnStmt(ReturnStmt *S) {
- VisitedNodes.push_back("return");
- return true;
- }
-
- bool VisitCXXRecordDecl(CXXRecordDecl *Declaration) {
- VisitedNodes.push_back(Declaration->getQualifiedNameAsString());
- return true;
- }
-
- bool VisitTemplateTypeParmType(TemplateTypeParmType *T) {
- VisitedNodes.push_back(T->getDecl()->getQualifiedNameAsString());
- return true;
- }
- };
-
-}
-
-TEST(RecursiveASTVisitor, PostOrderTraversal) {
- auto ASTUnit = tooling::buildASTFromCode(
- "class A {"
- " class B {"
- " int foo() { while(4) { int i = 9; int j = -5; } return (1 + 3) + 2; }"
- " };"
- "};"
- );
- auto TU = ASTUnit->getASTContext().getTranslationUnitDecl();
- // We traverse the translation unit and store all
- // visited nodes.
- RecordingVisitor Visitor(true);
- Visitor.TraverseTranslationUnitDecl(TU);
-
- std::vector<std::string> expected = {"4", "9", "i", "5", "-",
- "j", "1", "3", "+", "2",
- "+", "return", "A::B::foo", "A::B", "A"};
- // Compare the list of actually visited nodes
- // with the expected list of visited nodes.
- ASSERT_EQ(expected.size(), Visitor.VisitedNodes.size());
- for (std::size_t I = 0; I < expected.size(); I++) {
- ASSERT_EQ(expected[I], Visitor.VisitedNodes[I]);
- }
-}
-
-TEST(RecursiveASTVisitor, NoPostOrderTraversal) {
- auto ASTUnit = tooling::buildASTFromCode(
- "class A {"
- " class B {"
- " int foo() { return 1 + 2; }"
- " };"
- "};"
- );
- auto TU = ASTUnit->getASTContext().getTranslationUnitDecl();
- // We traverse the translation unit and store all
- // visited nodes.
- RecordingVisitor Visitor(false);
- Visitor.TraverseTranslationUnitDecl(TU);
-
- std::vector<std::string> expected = {
- "A", "A::B", "A::B::foo", "return", "+", "1", "2"
- };
- // Compare the list of actually visited nodes
- // with the expected list of visited nodes.
- ASSERT_EQ(expected.size(), Visitor.VisitedNodes.size());
- for (std::size_t I = 0; I < expected.size(); I++) {
- ASSERT_EQ(expected[I], Visitor.VisitedNodes[I]);
- }
-}