#include "clang/AST/RecursiveASTVisitor.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Frontend/CompilerInvocation.h"
+#include "clang/Lex/Preprocessor.h"
#include "llvm/ADT/Triple.h"
#include "llvm/Support/MemoryBuffer.h"
#include "gtest/gtest.h"
class TestASTFrontendAction : public ASTFrontendAction {
public:
+ TestASTFrontendAction(bool enableIncrementalProcessing = false)
+ : EnableIncrementalProcessing(enableIncrementalProcessing) { }
+
+ bool EnableIncrementalProcessing;
std::vector<std::string> decl_names;
+ virtual bool BeginSourceFileAction(CompilerInstance &ci, StringRef filename) {
+ if (EnableIncrementalProcessing)
+ ci.getPreprocessor().enableIncrementalProcessing();
+
+ return ASTFrontendAction::BeginSourceFileAction(ci, filename);
+ }
+
virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
StringRef InFile) {
return new Visitor(decl_names);
EXPECT_EQ("x", test_action.decl_names[2]);
}
+TEST(ASTFrontendAction, IncrementalParsing) {
+ CompilerInvocation *invocation = new CompilerInvocation;
+ invocation->getPreprocessorOpts().addRemappedFile(
+ "test.cc", MemoryBuffer::getMemBuffer("int main() { float x; }"));
+ invocation->getFrontendOpts().Inputs.push_back(FrontendInputFile("test.cc",
+ IK_CXX));
+ invocation->getFrontendOpts().ProgramAction = frontend::ParseSyntaxOnly;
+ invocation->getTargetOpts().Triple = "i386-unknown-linux-gnu";
+ CompilerInstance compiler;
+ compiler.setInvocation(invocation);
+ compiler.createDiagnostics();
+
+ TestASTFrontendAction test_action(/*enableIncrementalProcessing=*/true);
+ ASSERT_TRUE(compiler.ExecuteAction(test_action));
+ ASSERT_EQ(3U, test_action.decl_names.size());
+ EXPECT_EQ("__builtin_va_list", test_action.decl_names[0]);
+ EXPECT_EQ("main", test_action.decl_names[1]);
+ EXPECT_EQ("x", test_action.decl_names[2]);
+}
+
} // anonymous namespace