mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-12-22 19:49:49 +00:00
155 lines
3.4 KiB
C++
155 lines
3.4 KiB
C++
//===---------- llvm/unittest/Support/Casting.cpp - Casting tests ---------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Support/Casting.h"
|
|
#include "llvm/Support/Debug.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
|
|
#include "gtest/gtest.h"
|
|
#include <cstdlib>
|
|
|
|
namespace llvm {
|
|
|
|
// set up two example classes
|
|
// with conversion facility
|
|
//
|
|
struct bar {
|
|
bar() {}
|
|
struct foo *baz();
|
|
struct foo *caz();
|
|
struct foo *daz();
|
|
struct foo *naz();
|
|
private:
|
|
bar(const bar &);
|
|
};
|
|
struct foo {
|
|
void ext() const;
|
|
/* static bool classof(const bar *X) {
|
|
cerr << "Classof: " << X << "\n";
|
|
return true;
|
|
}*/
|
|
};
|
|
|
|
template <> struct isa_impl<foo, bar> {
|
|
static inline bool doit(const bar &Val) {
|
|
dbgs() << "Classof: " << &Val << "\n";
|
|
return true;
|
|
}
|
|
};
|
|
|
|
foo *bar::baz() {
|
|
return cast<foo>(this);
|
|
}
|
|
|
|
foo *bar::caz() {
|
|
return cast_or_null<foo>(this);
|
|
}
|
|
|
|
foo *bar::daz() {
|
|
return dyn_cast<foo>(this);
|
|
}
|
|
|
|
foo *bar::naz() {
|
|
return dyn_cast_or_null<foo>(this);
|
|
}
|
|
|
|
|
|
bar *fub();
|
|
} // End llvm namespace
|
|
|
|
using namespace llvm;
|
|
|
|
namespace {
|
|
|
|
const foo *null_foo = NULL;
|
|
|
|
extern bar &B1;
|
|
extern const bar *B2;
|
|
// test various configurations of const
|
|
const bar &B3 = B1;
|
|
const bar *const B4 = B2;
|
|
|
|
TEST(CastingTest, isa) {
|
|
EXPECT_TRUE(isa<foo>(B1));
|
|
EXPECT_TRUE(isa<foo>(B2));
|
|
EXPECT_TRUE(isa<foo>(B3));
|
|
EXPECT_TRUE(isa<foo>(B4));
|
|
}
|
|
|
|
TEST(CastingTest, cast) {
|
|
foo &F1 = cast<foo>(B1);
|
|
EXPECT_NE(&F1, null_foo);
|
|
const foo *F3 = cast<foo>(B2);
|
|
EXPECT_NE(F3, null_foo);
|
|
const foo *F4 = cast<foo>(B2);
|
|
EXPECT_NE(F4, null_foo);
|
|
const foo &F5 = cast<foo>(B3);
|
|
EXPECT_NE(&F5, null_foo);
|
|
const foo *F6 = cast<foo>(B4);
|
|
EXPECT_NE(F6, null_foo);
|
|
foo *F7 = cast<foo>(fub());
|
|
EXPECT_EQ(F7, null_foo);
|
|
foo *F8 = B1.baz();
|
|
EXPECT_NE(F8, null_foo);
|
|
}
|
|
|
|
TEST(CastingTest, cast_or_null) {
|
|
const foo *F11 = cast_or_null<foo>(B2);
|
|
EXPECT_NE(F11, null_foo);
|
|
const foo *F12 = cast_or_null<foo>(B2);
|
|
EXPECT_NE(F12, null_foo);
|
|
const foo *F13 = cast_or_null<foo>(B4);
|
|
EXPECT_NE(F13, null_foo);
|
|
const foo *F14 = cast_or_null<foo>(fub()); // Shouldn't print.
|
|
EXPECT_EQ(F14, null_foo);
|
|
foo *F15 = B1.caz();
|
|
EXPECT_NE(F15, null_foo);
|
|
}
|
|
|
|
TEST(CastingTest, dyn_cast) {
|
|
const foo *F1 = dyn_cast<foo>(B2);
|
|
EXPECT_NE(F1, null_foo);
|
|
const foo *F2 = dyn_cast<foo>(B2);
|
|
EXPECT_NE(F2, null_foo);
|
|
const foo *F3 = dyn_cast<foo>(B4);
|
|
EXPECT_NE(F3, null_foo);
|
|
// foo *F4 = dyn_cast<foo>(fub()); // not permittible
|
|
// EXPECT_EQ(F4, null_foo);
|
|
foo *F5 = B1.daz();
|
|
EXPECT_NE(F5, null_foo);
|
|
}
|
|
|
|
TEST(CastingTest, dyn_cast_or_null) {
|
|
const foo *F1 = dyn_cast_or_null<foo>(B2);
|
|
EXPECT_NE(F1, null_foo);
|
|
const foo *F2 = dyn_cast_or_null<foo>(B2);
|
|
EXPECT_NE(F2, null_foo);
|
|
const foo *F3 = dyn_cast_or_null<foo>(B4);
|
|
EXPECT_NE(F3, null_foo);
|
|
foo *F4 = dyn_cast_or_null<foo>(fub());
|
|
EXPECT_EQ(F4, null_foo);
|
|
foo *F5 = B1.naz();
|
|
EXPECT_NE(F5, null_foo);
|
|
}
|
|
|
|
// These lines are errors...
|
|
//foo *F20 = cast<foo>(B2); // Yields const foo*
|
|
//foo &F21 = cast<foo>(B3); // Yields const foo&
|
|
//foo *F22 = cast<foo>(B4); // Yields const foo*
|
|
//foo &F23 = cast_or_null<foo>(B1);
|
|
//const foo &F24 = cast_or_null<foo>(B3);
|
|
|
|
|
|
bar B;
|
|
bar &B1 = B;
|
|
const bar *B2 = &B;
|
|
} // anonymous namespace
|
|
|
|
bar *llvm::fub() { return 0; }
|