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//===- unittests/AST/StmtPrinterTest.cpp --- Statement 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 Stmt::printPretty() and related methods.
//
// Search this file for WRONG to see test cases that are producing something
// completely wrong, invalid C++ or just misleading.
//
// These tests have a coding convention:
// * statements to be printed should be contained within a function named 'A'
// unless it should have some special name (e.g., 'operator+');
// * additional helper declarations are 'Z', 'Y', 'X' and so on.
//
//===----------------------------------------------------------------------===//
#include "clang/AST/ASTContext.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
#include "clang/Tooling/Tooling.h"
#include "llvm/ADT/SmallString.h"
#include "gtest/gtest.h"
using namespace clang;
using namespace ast_matchers;
using namespace tooling;
namespace {
void PrintStmt(raw_ostream &Out, const ASTContext *Context, const Stmt *S) {
PrintingPolicy Policy = Context->getPrintingPolicy();
S->printPretty(Out, /*Helper*/ 0, Policy);
}
class PrintMatch : public MatchFinder::MatchCallback {
SmallString<1024> Printed;
unsigned NumFoundStmts;
public:
PrintMatch() : NumFoundStmts(0) {}
virtual void run(const MatchFinder::MatchResult &Result) {
const Stmt *S = Result.Nodes.getStmtAs<Stmt>("id");
if (!S)
return;
NumFoundStmts++;
if (NumFoundStmts > 1)
return;
llvm::raw_svector_ostream Out(Printed);
PrintStmt(Out, Result.Context, S);
}
StringRef getPrinted() const {
return Printed;
}
unsigned getNumFoundStmts() const {
return NumFoundStmts;
}
};
::testing::AssertionResult PrintedStmtMatches(
StringRef Code,
const std::vector<std::string> &Args,
const DeclarationMatcher &NodeMatch,
StringRef ExpectedPrinted) {
PrintMatch Printer;
MatchFinder Finder;
Finder.addMatcher(NodeMatch, &Printer);
OwningPtr<FrontendActionFactory> Factory(newFrontendActionFactory(&Finder));
if (!runToolOnCodeWithArgs(Factory->create(), Code, Args))
return testing::AssertionFailure() << "Parsing error in \"" << Code << "\"";
if (Printer.getNumFoundStmts() == 0)
return testing::AssertionFailure()
<< "Matcher didn't find any statements";
if (Printer.getNumFoundStmts() > 1)
return testing::AssertionFailure()
<< "Matcher should match only one statement "
"(found " << Printer.getNumFoundStmts() << ")";
if (Printer.getPrinted() != ExpectedPrinted)
return ::testing::AssertionFailure()
<< "Expected \"" << ExpectedPrinted << "\", "
"got \"" << Printer.getPrinted() << "\"";
return ::testing::AssertionSuccess();
}
::testing::AssertionResult PrintedStmtCXX98Matches(
StringRef Code,
StringRef ContainingFunction,
StringRef ExpectedPrinted) {
std::vector<std::string> Args;
Args.push_back("-std=c++98");
Args.push_back("-Wno-unused-value");
return PrintedStmtMatches(Code,
Args,
functionDecl(hasName(ContainingFunction),
has(compoundStmt(has(stmt().bind("id"))))),
ExpectedPrinted);
}
::testing::AssertionResult PrintedStmtMSMatches(
StringRef Code,
StringRef ContainingFunction,
StringRef ExpectedPrinted) {
std::vector<std::string> Args;
Args.push_back("-std=c++98");
Args.push_back("-fms-extensions");
Args.push_back("-Wno-unused-value");
return PrintedStmtMatches(Code,
Args,
functionDecl(hasName(ContainingFunction),
has(compoundStmt(has(stmt().bind("id"))))),
ExpectedPrinted);
}
} // unnamed namespace
TEST(StmtPrinter, TestIntegerLiteral) {
ASSERT_TRUE(PrintedStmtCXX98Matches(
"void A() {"
" 1, -1, 1U, 1u,"
" 1L, 1l, -1L, 1UL, 1ul,"
" 1LL, -1LL, 1ULL;"
"}",
"A",
"1 , -1 , 1U , 1U , "
"1L , 1L , -1L , 1UL , 1UL , "
"1LL , -1LL , 1ULL"));
// Should be: with semicolon
}
TEST(StmtPrinter, TestMSIntegerLiteral) {
ASSERT_TRUE(PrintedStmtMSMatches(
"void A() {"
" 1i8, -1i8, 1ui8, "
" 1i16, -1i16, 1ui16, "
" 1i32, -1i32, 1ui32, "
" 1i64, -1i64, 1ui64;"
"}",
"A",
"1 , -1 , 1U , "
"1 , -1 , 1U , "
"1L , -1L , 1UL , "
"1LL , -1LL , 1ULL"));
// Should be: with semicolon
}
TEST(StmtPrinter, TestFloatingPointLiteral) {
ASSERT_TRUE(PrintedStmtCXX98Matches(
"void A() { 1.0f, -1.0f, 1.0, -1.0, 1.0l, -1.0l; }",
"A",
"1.F , -1.F , 1. , -1. , 1.L , -1.L"));
// Should be: with semicolon
}
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