livecode/libfoundation/src/system-library.cpp at develop · livecode/livecode · GitHub

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/* -*-c++-*-

This file is part of LiveCode.

LiveCode is free software; you can redistribute it and/or modify it under

the terms of the GNU General Public License v3 as published by the Free

Software Foundation.

LiveCode is distributed in the hope that it will be useful, but WITHOUT ANY

WARRANTY; without even the implied warranty of MERCHANTABILITY or

FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License

for more details.

You should have received a copy of the GNU General Public License

along with LiveCode. If not see <http://www.gnu.org/licenses/>. */

#include "system-private.h"

#include <foundation-auto.h>

/* ---------------------------------------------------------------- */

/* The MCSLibraryRef custom typeinfo. */

MCTypeInfoRef kMCSLibraryTypeInfo = nullptr;

/* The MCSLibraryCouldNotLoadError error. */

MCErrorRef kMCSLibraryCouldNotLoadError = nullptr;

/* The native lib path on Android. */

#if defined(__ANDROID__)

static MCStringRef sMCSLibraryAndroidNativeLibPath = nullptr;

#endif

/* ================================================================

* Types

* ================================================================ */

#if defined(__WINDOWS__)

#include "system-library-w32.hpp"

#elif defined(__MAC__)

#include "system-library-mac.hpp"

#elif defined(__IOS__)

#include "system-library-ios.hpp"

#elif defined(__LINUX__)

#include "system-library-linux.hpp"

#elif defined(__ANDROID__)

#include "system-library-android.hpp"

#elif defined(__EMSCRIPTEN__)

#include "system-library-emscripten.hpp"

#endif

class __MCSLibraryImpl

{

public:

__MCSLibraryImpl(void)

{

}

~__MCSLibraryImpl(void)

{

}

bool operator == (const __MCSLibraryImpl& p_other) const

{

MCAssert(IsDefined());

return m_handle.IsEqualTo(p_other.m_handle);

}

//////////

bool IsDefined(void) const

{

return m_handle.IsDefined();

}

hash_t Hash(void) const

{

return m_handle.Hash();

}

bool CreateWithNativePath(MCStringRef p_native_path)

{

MCAssert(!IsDefined());

return m_handle.CreateWithNativePath(p_native_path);

}

bool CreateWithAddress(void *p_address)

{

MCAssert(!IsDefined());

return m_handle.CreateWithAddress(p_address);

}

bool CopyNativePath(MCStringRef& r_native_path) const

{

MCAssert(IsDefined());

return m_handle.CopyNativePath(r_native_path);

}

void *LookupSymbol(MCStringRef p_symbol) const

{

MCAssert(IsDefined());

return m_handle.LookupSymbol(p_symbol);

}

private:

__MCSLibraryHandle m_handle;

};

static inline __MCSLibraryImpl&

__MCSLibraryGetImpl(MCSLibraryRef p_library)

{

return *(__MCSLibraryImpl *)MCValueGetExtraBytesPtr(p_library);

}

static inline __MCSLibraryImpl&

__MCSLibraryGetImpl(MCValueRef p_value)

{

MCAssert(MCValueGetTypeInfo(p_value) == kMCSLibraryTypeInfo);

return *(__MCSLibraryImpl *)MCValueGetExtraBytesPtr(p_value);

}

static void

__MCSLibraryDestroy(MCValueRef p_value)

{

__MCSLibraryGetImpl(p_value).~__MCSLibraryImpl();

}

static bool

__MCSLibraryCopy(MCValueRef p_value,

bool p_release,

MCValueRef& r_copied_value)

{

if (p_release)

r_copied_value = p_value;

else

r_copied_value = MCValueRetain(p_value);

return true;

}

static bool

__MCSLibraryEqual(MCValueRef p_left,

MCValueRef p_right)

{

return __MCSLibraryGetImpl(p_left) == __MCSLibraryGetImpl(p_right);

}

static hash_t

__MCSLibraryHash(MCValueRef p_value)

{

return __MCSLibraryGetImpl(p_value).Hash();

}

static bool

__MCSLibraryDescribe(MCValueRef p_value,

MCStringRef& r_description)

{

return false;

}

static MCValueCustomCallbacks

__kMCSLibraryCallbacks =

{

false,

__MCSLibraryDestroy,

__MCSLibraryCopy,

__MCSLibraryEqual,

__MCSLibraryHash,

__MCSLibraryDescribe,

nullptr,

};

bool

__MCSLibraryInitialize(void)

{

if (!MCNamedCustomTypeInfoCreate(MCNAME("livecode.system.Library"),

kMCNullTypeInfo,

&__kMCSLibraryCallbacks,

kMCSLibraryTypeInfo))

{

return false;

}

#if defined(__ANDROID__)

sMCSLibraryAndroidNativeLibPath = nullptr;

#endif

return true;

}

void

__MCSLibraryFinalize(void)

{

#if defined(__ANDROID__)

MCValueRelease(sMCSLibraryAndroidNativeLibPath);

sMCSLibraryAndroidNativeLibPath = nil;

#endif

MCValueRelease(kMCSLibraryTypeInfo);

}

static bool

__MCSLibraryCreate(MCSLibraryRef& r_library)

{

MCSLibraryRef t_library;

if (!MCValueCreateCustom(kMCSLibraryTypeInfo,

sizeof(__MCSLibraryImpl),

t_library))

{

return false;

}

new (MCValueGetExtraBytesPtr(t_library)) __MCSLibraryImpl();

r_library = t_library;

return true;

}

/* ================================================================

* Errors

* ================================================================ */

/* Thrown if the attempt to load the library on the given path failed. */

bool

__MCSLibraryThrowCreateWithNativePathFailed(MCStringRef p_native_path)

{

return false;

}

/* Thrown if the attempt to load the library at the given address failed. */

bool

__MCSLibraryThrowCreateWithAddressFailed(void *p_address)

{

return false;

}

/* Thrown if the attempt to compute a library's path failed */

bool

__MCSLibraryThrowResolvePathFailed(void)

{

return false;

}

/* ================================================================

* Public API

* ================================================================ */

MC_DLLEXPORT_DEF bool

MCSLibraryCreateWithPath(MCStringRef p_path,

MCSLibraryRef& r_library)

{

MCAutoStringRef t_native_path;

if (!__MCSFilePathToNative(p_path,

&t_native_path))

{

return false;

}

MCSAutoLibraryRef t_new_library;

if (!__MCSLibraryCreate(&t_new_library))

{

return false;

}

if (!__MCSLibraryGetImpl(*t_new_library).CreateWithNativePath(*t_native_path))

{

return false;

}

r_library = t_new_library.Take();

return true;

}

MC_DLLEXPORT_DEF bool

MCSLibraryCreateWithAddress(void *p_address,

MCSLibraryRef& r_library)

{

MCSAutoLibraryRef t_new_library;

if (!__MCSLibraryCreate(&t_new_library))

{

return false;

}

if (!__MCSLibraryGetImpl(*t_new_library).CreateWithAddress(p_address))

{

return false;

}

r_library = t_new_library.Take();

return true;

}

MC_DLLEXPORT_DEF bool

MCSLibraryCopyNativePath(MCSLibraryRef p_library,

MCStringRef& r_path)

{

return __MCSLibraryGetImpl(p_library).CopyNativePath(r_path);

}

MC_DLLEXPORT_DEF bool

MCSLibraryCopyPath(MCSLibraryRef p_library,

MCStringRef& r_path)

{

MCAutoStringRef t_native_path;

if (!__MCSLibraryGetImpl(p_library).CopyNativePath(&t_native_path))

{

return false;

}

return __MCSFilePathFromNative(*t_native_path,

r_path);

}

MC_DLLEXPORT_DEF void *

MCSLibraryLookupSymbol(MCSLibraryRef p_library,

MCStringRef p_symbol)

{

return __MCSLibraryGetImpl(p_library).LookupSymbol(p_symbol);

}

#if defined(__ANDROID__)

MC_DLLEXPORT_DEF void

MCSLibraryAndroidSetNativeLibPath(MCStringRef p_path)

{

MCValueAssign(sMCSLibraryAndroidNativeLibPath,

p_path);

}

#endif

livecode/libfoundation/src/system-library.cpp at develop · livecode/livecode · GitHub

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