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namespace SlangITool
{
static void printCallback(const char* message, void* userData)
{
auto stdWriters = (StdWriters*)userData;
if (stdWriters)
{
stdWriters->getOut().print("%s", message);
}
}
static SlangResult compileAndInterpret(
slang::IGlobalSession* sharedSession,
StdWriters* stdWriters,
UnownedStringSlice fileName,
const char* entryPointName,
bool disasm,
int argc,
const char* const* argv)
{
auto maybePrintDiagnostic = [&](const ComPtr<slang::IBlob>& diagnosticBlob)
{
if (diagnosticBlob)
{
const char* diagText = (const char*)diagnosticBlob->getBufferPointer();
stdWriters->getError().print("%s\n", diagText);
}
};
ComPtr<slang::IGlobalSession> globalSession;
SLANG_RETURN_ON_FAIL(slang_createGlobalSession(SLANG_API_VERSION, globalSession.writeRef()));
slang::TargetDesc targetDesc = {};
targetDesc.format = SLANG_HOST_VM;
slang::SessionDesc sessionDesc = {};
sessionDesc.targetCount = 1;
sessionDesc.targets = &targetDesc;
sessionDesc.compilerOptionEntryCount = 0;
String pathName = Path::getParentDirectory(fileName);
String moduleName = Path::getFileNameWithoutExt(fileName);
const char* searchPaths[] = {pathName.getBuffer()};
if (pathName.getLength())
{
sessionDesc.searchPathCount = 1;
sessionDesc.searchPaths = searchPaths;
}
ComPtr<slang::ISession> session;
SLANG_RETURN_ON_FAIL(globalSession->createSession(sessionDesc, session.writeRef()));
ComPtr<slang::IBlob> diagnosticBlob;
auto module = session->loadModule(moduleName.getBuffer(), diagnosticBlob.writeRef());
if (!module)
{
maybePrintDiagnostic(diagnosticBlob);
return SLANG_FAIL;
}
ComPtr<slang::IEntryPoint> entryPoint;
if (SLANG_FAILED(module->findAndCheckEntryPoint(
entryPointName,
SLANG_STAGE_DISPATCH,
entryPoint.writeRef(),
diagnosticBlob.writeRef())))
{
maybePrintDiagnostic(diagnosticBlob);
return SLANG_FAIL;
}
ComPtr<slang::IComponentType> compositeComponent;
slang::IComponentType* components[] = {module, entryPoint.get()};
if (SLANG_FAILED(session->createCompositeComponentType(
components,
2,
compositeComponent.writeRef(),
diagnosticBlob.writeRef())))
{
maybePrintDiagnostic(diagnosticBlob);
return SLANG_FAIL;
}
ComPtr<slang::IComponentType> linkedProgram;
if (SLANG_FAILED(compositeComponent->link(linkedProgram.writeRef(), diagnosticBlob.writeRef())))
{
maybePrintDiagnostic(diagnosticBlob);
return SLANG_FAIL;
}
ComPtr<slang::IBlob> code;
if (SLANG_FAILED(linkedProgram->getTargetCode(0, code.writeRef(), diagnosticBlob.writeRef())))
{
maybePrintDiagnostic(diagnosticBlob);
return SLANG_FAIL;
}
if (code->getBufferSize() == 0)
{
return SLANG_FAIL;
}
if (disasm)
{
ComPtr<slang::IBlob> disasmBlob;
if (SLANG_FAILED(slang_disassembleByteCode(code, disasmBlob.writeRef())))
{
maybePrintDiagnostic(diagnosticBlob);
return SLANG_FAIL;
}
const char* disasmText = (const char*)disasmBlob->getBufferPointer();
stdWriters->getOut().print("%s\n", disasmText);
return SLANG_OK;
}
// Create a byte code runner and interpret the code.
ComPtr<slang::IByteCodeRunner> runner;
slang::ByteCodeRunnerDesc runnerDesc = {};
SLANG_RETURN_ON_FAIL(slang_createByteCodeRunner(&runnerDesc, runner.writeRef()));
runner->setPrintCallback(printCallback, stdWriters);
if (SLANG_FAILED(runner->loadModule(code)))
{
runner->getErrorString(diagnosticBlob.writeRef());
maybePrintDiagnostic(diagnosticBlob);
}
auto funcIndex = runner->findFunctionByName(entryPointName);
if (funcIndex < 0)
{
stdWriters->getError().print("Function '%s' not found in byte code.\n", entryPointName);
return SLANG_FAIL;
}
if (SLANG_FAILED(runner->selectFunctionByIndex((uint32_t)funcIndex)))
{
runner->getErrorString(diagnosticBlob.writeRef());
maybePrintDiagnostic(diagnosticBlob);
return SLANG_FAIL;
}
struct Arguments
{
uint32_t argc;
const char* const* argv;
};
Arguments args;
args.argc = argc;
args.argv = argv;
void* arguments = nullptr;
size_t argSize = 0;
slang::ByteCodeFuncInfo funcInfo;
if (SLANG_FAILED(runner->getFunctionInfo((uint32_t)funcIndex, &funcInfo)))
{
runner->getErrorString(diagnosticBlob.writeRef());
maybePrintDiagnostic(diagnosticBlob);
return SLANG_FAIL;
}
if (funcInfo.parameterCount == 2)
{
arguments = &args;
argSize = sizeof(Arguments);
}
if (SLANG_FAILED(runner->execute(arguments, argSize)))
{
runner->getErrorString(diagnosticBlob.writeRef());
maybePrintDiagnostic(diagnosticBlob);
return SLANG_FAIL;
}
return SLANG_OK;
}
SlangResult innerMain(
StdWriters* stdWriters,
slang::IGlobalSession* sharedSession,
int argc,
const char* const* argv)
{
StdWriters::setSingleton(stdWriters);
// Assume we will used the shared session
ComPtr<slang::IGlobalSession> session(sharedSession);
// The sharedSession always has a pre-loaded core module.
// This differed test checks if the command line has an option to setup the core module.
// If so we *don't* use the sharedSession, and create a new session without the core module just
// for this compilation.
if (TestToolUtil::hasDeferredCoreModule(Index(argc - 1), argv + 1))
{
SLANG_RETURN_ON_FAIL(
slang_createGlobalSessionWithoutCoreModule(SLANG_API_VERSION, session.writeRef()));
}
String entryPointName = toSlice("main");
UnownedStringSlice fileName;
bool disasm = false;
int innerArgIndex = 0;
if (argc < 2)
{
return SLANG_FAIL;
}
for (auto i = 1; i < argc; i++)
{
auto arg = UnownedStringSlice(argv[i]);
if (arg == "-entry")
{
entryPointName = UnownedStringSlice(argv[++i]);
}
else if (arg == "-disasm")
{
disasm = true;
}
else if (arg.startsWith("-"))
{
return SLANG_FAIL;
}
else
{
fileName = arg;
innerArgIndex = i;
break;
}
}
if (!fileName.getLength())
{
return SLANG_FAIL;
}
auto result = compileAndInterpret(
session,
stdWriters,
fileName,
entryPointName.getBuffer(),
disasm,
argc - innerArgIndex,
argv + innerArgIndex);
return result;
}
} // namespace SlangITool
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