MangleHack.cpp

//===--- MangleHack.cpp - Swift Mangle Hack for various clients -----------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
//
// Implementations of mangler hacks for Interface Builder
//
// We don't have the time to disentangle the real mangler from the compiler
// right now.
//
//===----------------------------------------------------------------------===//

#include "swift/Basic/Assertions.h"
#include "swift/SwiftDemangle/MangleHack.h"
#include "swift/Runtime/Portability.h"
#include "swift/Strings.h"
#include <cassert>
#include <cstdarg>
#include <cstdio>
#include <cstdlib>
#include <cstring>

const char *
_swift_mangleSimpleClass(const char *module, const char *class_) {
  size_t moduleLength = strlen(module);
  size_t classLength = strlen(class_);
  char *value = nullptr;
  if (swift::STDLIB_NAME == llvm::StringRef(module)) {
    int result = swift_asprintf(&value, "_TtCs%zu%s", classLength, class_);
    assert(result > 0);
    (void)result;
  } else {
    int result = swift_asprintf(&value, "_TtC%zu%s%zu%s", moduleLength, module,
                          classLength, class_);
    assert(result > 0);
    (void)result;
  }
  assert(value);
  return value;
}

const char *
_swift_mangleSimpleProtocol(const char *module, const char *protocol) {
  size_t moduleLength = strlen(module);
  size_t protocolLength = strlen(protocol);
  char *value = nullptr;
  if (swift::STDLIB_NAME == llvm::StringRef(module)) {
    int result = swift_asprintf(&value, "_TtPs%zu%s_", protocolLength, protocol);
    assert(result > 0);
    (void)result;
  } else {
    int result = swift_asprintf(&value, "_TtP%zu%s%zu%s_", moduleLength, module,
                          protocolLength, protocol);
    assert(result > 0);
    (void)result;
  }
  assert(value);
  return value;
}