/*
* Copyright 2011 Sven Verdoolaege. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY SVEN VERDOOLAEGE ''AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SVEN VERDOOLAEGE OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation
* are those of the authors and should not be interpreted as
* representing official policies, either expressed or implied, of
* Sven Verdoolaege.
*/
#include "isl_config.h"
#undef PACKAGE
#include <assert.h>
#include <iostream>
#include <stdlib.h>
#ifdef HAVE_ADT_OWNINGPTR_H
#include <llvm/ADT/OwningPtr.h>
#else
#include <memory>
#endif
#ifdef HAVE_LLVM_OPTION_ARG_H
#include <llvm/Option/Arg.h>
#endif
#include <llvm/Support/raw_ostream.h>
#include <llvm/Support/CommandLine.h>
#include <llvm/Support/ManagedStatic.h>
#include <llvm/TargetParser/Host.h>
#include <clang/AST/ASTContext.h>
#include <clang/AST/ASTConsumer.h>
#include <clang/Basic/Builtins.h>
#include <clang/Basic/FileSystemOptions.h>
#include <clang/Basic/FileManager.h>
#include <clang/Basic/TargetOptions.h>
#include <clang/Basic/TargetInfo.h>
#include <clang/Basic/Version.h>
#include <clang/Driver/Compilation.h>
#include <clang/Driver/Driver.h>
#include <clang/Driver/Tool.h>
#include <clang/Frontend/CompilerInstance.h>
#include <clang/Frontend/CompilerInvocation.h>
#ifdef HAVE_BASIC_DIAGNOSTICOPTIONS_H
#include <clang/Basic/DiagnosticOptions.h>
#else
#include <clang/Frontend/DiagnosticOptions.h>
#endif
#include <clang/Frontend/TextDiagnosticPrinter.h>
#include <clang/Frontend/Utils.h>
#include <clang/Lex/HeaderSearch.h>
#ifdef HAVE_LEX_PREPROCESSOROPTIONS_H
#include <clang/Lex/PreprocessorOptions.h>
#else
#include <clang/Frontend/PreprocessorOptions.h>
#endif
#include <clang/Lex/Preprocessor.h>
#include <clang/Parse/ParseAST.h>
#include <clang/Sema/Sema.h>
#include "extract_interface.h"
#include "generator.h"
#include "python.h"
#include "plain_cpp.h"
#include "cpp_conversion.h"
#include "template_cpp.h"
using namespace std;
using namespace clang;
using namespace clang::driver;
#ifdef HAVE_LLVM_OPTION_ARG_H
using namespace llvm::opt;
#endif
#ifdef HAVE_ADT_OWNINGPTR_H
#define unique_ptr llvm::OwningPtr
#endif
static llvm::cl::opt<string> InputFilename(llvm::cl::Positional,
llvm::cl::Required, llvm::cl::desc("<input file>"));
static llvm::cl::list<string> Includes("I",
llvm::cl::desc("Header search path"),
llvm::cl::value_desc("path"), llvm::cl::Prefix);
static llvm::cl::opt<string> OutputLanguage(llvm::cl::Required,
llvm::cl::ValueRequired, "language",
llvm::cl::desc("Bindings to generate"),
llvm::cl::value_desc("name"));
static const char *ResourceDir =
CLANG_PREFIX "/lib/clang/" CLANG_VERSION_STRING;
/* Does decl have an attribute of the following form?
*
* __attribute__((annotate("name")))
*/
bool has_annotation(Decl *decl, const char *name)
{
if (!decl->hasAttrs())
return false;
AttrVec attrs = decl->getAttrs();
for (AttrVec::const_iterator i = attrs.begin() ; i != attrs.end(); ++i) {
const AnnotateAttr *ann = dyn_cast<AnnotateAttr>(*i);
if (!ann)
continue;
if (ann->getAnnotation().str() == name)
return true;
}
return false;
}
/* Is decl marked as exported?
*/
static bool is_exported(Decl *decl)
{
return has_annotation(decl, "isl_export");
}
/* Collect all types and functions that are annotated "isl_export"
* in "exported_types" and "exported_function". Collect all function
* declarations in "functions".
*
* We currently only consider single declarations.
*/
struct MyASTConsumer : public ASTConsumer {
set<RecordDecl *> exported_types;
set<FunctionDecl *> exported_functions;
set<FunctionDecl *> functions;
virtual HandleTopLevelDeclReturn HandleTopLevelDecl(DeclGroupRef D) {
Decl *decl;
if (!D.isSingleDecl())
return HandleTopLevelDeclContinue;
decl = D.getSingleDecl();
if (isa<FunctionDecl>(decl))
functions.insert(cast<FunctionDecl>(decl));
if (!is_exported(decl))
return HandleTopLevelDeclContinue;
switch (decl->getKind()) {
case Decl::Record:
exported_types.insert(cast<RecordDecl>(decl));
break;
case Decl::Function:
exported_functions.insert(cast<FunctionDecl>(decl));
break;
default:
break;
}
return HandleTopLevelDeclContinue;
}
};
#ifdef USE_ARRAYREF
#ifdef HAVE_CXXISPRODUCTION
static Driver *construct_driver(const char *binary, DiagnosticsEngine &Diags)
{
return new Driver(binary, llvm::sys::getDefaultTargetTriple(),
"", false, false, Diags);
}
#elif defined(HAVE_ISPRODUCTION)
static Driver *construct_driver(const char *binary, DiagnosticsEngine &Diags)
{
return new Driver(binary, llvm::sys::getDefaultTargetTriple(),
"", false, Diags);
}
#elif defined(DRIVER_CTOR_TAKES_DEFAULTIMAGENAME)
static Driver *construct_driver(const char *binary, DiagnosticsEngine &Diags)
{
return new Driver(binary, llvm::sys::getDefaultTargetTriple(),
"", Diags);
}
#else
static Driver *construct_driver(const char *binary, DiagnosticsEngine &Diags)
{
return new Driver(binary, llvm::sys::getDefaultTargetTriple(), Diags);
}
#endif
namespace clang { namespace driver { class Job; } }
/* Clang changed its API from 3.5 to 3.6 and once more in 3.7.
* We fix this with a simple overloaded function here.
*/
struct ClangAPI {
static Job *command(Job *J) { return J; }
static Job *command(Job &J) { return &J; }
static Command *command(Command &C) { return &C; }
};
#ifdef CREATE_FROM_ARGS_TAKES_ARRAYREF
/* Call CompilerInvocation::CreateFromArgs with the right arguments.
* In this case, an ArrayRef<const char *>.
*/
static void create_from_args(CompilerInvocation &invocation,
const ArgStringList *args, DiagnosticsEngine &Diags)
{
CompilerInvocation::CreateFromArgs(invocation, *args, Diags);
}
#else
/* Call CompilerInvocation::CreateFromArgs with the right arguments.
* In this case, two "const char *" pointers.
*/
static void create_from_args(CompilerInvocation &invocation,
const ArgStringList *args, DiagnosticsEngine &Diags)
{
CompilerInvocation::CreateFromArgs(invocation, args->data() + 1,
args->data() + args->size(),
Diags);
}
#endif
#ifdef CLANG_SYSROOT
/* Set sysroot if required.
*
* If CLANG_SYSROOT is defined, then set it to this value.
*/
static void set_sysroot(ArgStringList &args)
{
args.push_back("-isysroot");
args.push_back(CLANG_SYSROOT);
}
#else
/* Set sysroot if required.
*
* If CLANG_SYSROOT is not defined, then it does not need to be set.
*/
static void set_sysroot(ArgStringList &args)
{
}
#endif
/* Create a CompilerInvocation object that stores the command line
* arguments constructed by the driver.
* The arguments are mainly useful for setting up the system include
* paths on newer clangs and on some platforms.
*/
static CompilerInvocation *construct_invocation(const char *filename,
DiagnosticsEngine &Diags)
{
const char *binary = CLANG_PREFIX"/bin/clang";
const unique_ptr<Driver> driver(construct_driver(binary, Diags));
std::vector<const char *> Argv;
Argv.push_back(binary);
Argv.push_back(filename);
const unique_ptr<Compilation> compilation(
driver->BuildCompilation(llvm::ArrayRef<const char *>(Argv)));
JobList &Jobs = compilation->getJobs();
Command *cmd = cast<Command>(ClangAPI::command(*Jobs.begin()));
if (strcmp(cmd->getCreator().getName(), "clang"))
return NULL;
ArgStringList args = cmd->getArguments();
set_sysroot(args);
CompilerInvocation *invocation = new CompilerInvocation;
create_from_args(*invocation, &args, Diags);
return invocation;
}
#else
static CompilerInvocation *construct_invocation(const char *filename,
DiagnosticsEngine &Diags)
{
return NULL;
}
#endif
#ifdef HAVE_BASIC_DIAGNOSTICOPTIONS_H
static TextDiagnosticPrinter *construct_printer(void)
{
return new TextDiagnosticPrinter(llvm::errs(), new DiagnosticOptions());
}
#else
static TextDiagnosticPrinter *construct_printer(void)
{
DiagnosticOptions DO;
return new TextDiagnosticPrinter(llvm::errs(), DO);
}
#endif
#ifdef CREATETARGETINFO_TAKES_SHARED_PTR
static TargetInfo *create_target_info(CompilerInstance *Clang,
DiagnosticsEngine &Diags)
{
shared_ptr<TargetOptions> TO = Clang->getInvocation().TargetOpts;
TO->Triple = llvm::sys::getDefaultTargetTriple();
return TargetInfo::CreateTargetInfo(Diags, TO);
}
#elif defined(CREATETARGETINFO_TAKES_POINTER)
static TargetInfo *create_target_info(CompilerInstance *Clang,
DiagnosticsEngine &Diags)
{
TargetOptions &TO = Clang->getTargetOpts();
TO.Triple = llvm::sys::getDefaultTargetTriple();
return TargetInfo::CreateTargetInfo(Diags, &TO);
}
#else
static TargetInfo *create_target_info(CompilerInstance *Clang,
DiagnosticsEngine &Diags)
{
TargetOptions &TO = Clang->getTargetOpts();
TO.Triple = llvm::sys::getDefaultTargetTriple();
return TargetInfo::CreateTargetInfo(Diags, TO);
}
#endif
#ifdef CREATEDIAGNOSTICS_TAKES_ARG
static void create_diagnostics(CompilerInstance *Clang)
{
Clang->createDiagnostics(0, NULL, construct_printer());
}
#else
static void create_diagnostics(CompilerInstance *Clang)
{
Clang->createDiagnostics(construct_printer());
}
#endif
#ifdef CREATEPREPROCESSOR_TAKES_TUKIND
static void create_preprocessor(CompilerInstance *Clang)
{
Clang->createPreprocessor(TU_Complete);
}
#else
static void create_preprocessor(CompilerInstance *Clang)
{
Clang->createPreprocessor();
}
#endif
#ifdef ADDPATH_TAKES_4_ARGUMENTS
/* Add "Path" to the header search options.
*
* Do not take into account sysroot, i.e., set ignoreSysRoot to true.
*/
void add_path(HeaderSearchOptions &HSO, string Path)
{
HSO.AddPath(Path, frontend::Angled, false, true);
}
#else
/* Add "Path" to the header search options.
*
* Do not take into account sysroot, i.e., set IsSysRootRelative to false.
*/
void add_path(HeaderSearchOptions &HSO, string Path)
{
HSO.AddPath(Path, frontend::Angled, true, false, false);
}
#endif
#ifdef HAVE_SETMAINFILEID
static void create_main_file_id(SourceManager &SM, const FileEntry *file)
{
SM.setMainFileID(SM.createFileID(file, SourceLocation(),
SrcMgr::C_User));
}
#else
static void create_main_file_id(SourceManager &SM, const FileEntry *file)
{
SM.createMainFileID(file);
}
#endif
#ifdef SETLANGDEFAULTS_TAKES_5_ARGUMENTS
#include "set_lang_defaults_arg4.h"
static void set_lang_defaults(CompilerInstance *Clang)
{
PreprocessorOptions &PO = Clang->getPreprocessorOpts();
TargetOptions &TO = Clang->getTargetOpts();
llvm::Triple T(TO.Triple);
SETLANGDEFAULTS::setLangDefaults(Clang->getLangOpts(), IK_C, T,
setLangDefaultsArg4(PO),
LangStandard::lang_unspecified);
}
#else
static void set_lang_defaults(CompilerInstance *Clang)
{
CompilerInvocation::setLangDefaults(Clang->getLangOpts(), IK_C,
LangStandard::lang_unspecified);
}
#endif
#ifdef SETINVOCATION_TAKES_SHARED_PTR
static void set_invocation(CompilerInstance *Clang,
CompilerInvocation *invocation)
{
Clang->setInvocation(std::make_shared<CompilerInvocation>(*invocation));
}
#else
static void set_invocation(CompilerInstance *Clang,
CompilerInvocation *invocation)
{
Clang->setInvocation(invocation);
}
#endif
/* Helper function for ignore_error that only gets enabled if T
* (which is either const FileEntry * or llvm::ErrorOr<const FileEntry *>)
* has getError method, i.e., if it is llvm::ErrorOr<const FileEntry *>.
*/
template <class T>
static const FileEntry *ignore_error_helper(const T obj, int,
int[1][sizeof(obj.getError())])
{
return *obj;
}
/* Helper function for ignore_error that is always enabled,
* but that only gets selected if the variant above is not enabled,
* i.e., if T is const FileEntry *.
*/
template <class T>
static const FileEntry *ignore_error_helper(const T obj, long, void *)
{
return obj;
}
/* Given either a const FileEntry * or a llvm::ErrorOr<const FileEntry *>,
* extract out the const FileEntry *.
*/
template <class T>
static const FileEntry *ignore_error(const T obj)
{
return ignore_error_helper(obj, 0, NULL);
}
/* Return the FileEntry corresponding to the given file name
* in the given compiler instances, ignoring any error.
*/
static const FileEntry *getFile(CompilerInstance *Clang, std::string Filename)
{
return ignore_error(Clang->getFileManager().getFile(Filename));
}
/* Create an interface generator for the selected language and
* then use it to generate the interface.
*/
static void generate(MyASTConsumer &consumer, SourceManager &SM)
{
generator *gen;
if (OutputLanguage.compare("python") == 0) {
gen = new python_generator(SM, consumer.exported_types,
consumer.exported_functions, consumer.functions);
} else if (OutputLanguage.compare("cpp") == 0) {
gen = new plain_cpp_generator(SM, consumer.exported_types,
consumer.exported_functions, consumer.functions);
} else if (OutputLanguage.compare("cpp-checked") == 0) {
gen = new plain_cpp_generator(SM, consumer.exported_types,
consumer.exported_functions, consumer.functions, true);
} else if (OutputLanguage.compare("cpp-checked-conversion") == 0) {
gen = new cpp_conversion_generator(SM, consumer.exported_types,
consumer.exported_functions, consumer.functions);
} else if (OutputLanguage.compare("template-cpp") == 0) {
gen = new template_cpp_generator(SM, consumer.exported_types,
consumer.exported_functions, consumer.functions);
} else {
cerr << "Language '" << OutputLanguage
<< "' not recognized." << endl
<< "Not generating bindings." << endl;
exit(EXIT_FAILURE);
}
gen->generate();
}
int main(int argc, char *argv[])
{
llvm::cl::ParseCommandLineOptions(argc, argv);
CompilerInstance *Clang = new CompilerInstance();
create_diagnostics(Clang);
DiagnosticsEngine &Diags = Clang->getDiagnostics();
Diags.setSuppressSystemWarnings(true);
TargetInfo *target = create_target_info(Clang, Diags);
Clang->setTarget(target);
set_lang_defaults(Clang);
CompilerInvocation *invocation =
construct_invocation(InputFilename.c_str(), Diags);
if (invocation)
set_invocation(Clang, invocation);
Clang->createFileManager();
Clang->createSourceManager(Clang->getFileManager());
HeaderSearchOptions &HSO = Clang->getHeaderSearchOpts();
LangOptions &LO = Clang->getLangOpts();
PreprocessorOptions &PO = Clang->getPreprocessorOpts();
HSO.ResourceDir = ResourceDir;
for (llvm::cl::list<string>::size_type i = 0; i < Includes.size(); ++i)
add_path(HSO, Includes[i]);
PO.addMacroDef("__isl_give=__attribute__((annotate(\"isl_give\")))");
PO.addMacroDef("__isl_keep=__attribute__((annotate(\"isl_keep\")))");
PO.addMacroDef("__isl_take=__attribute__((annotate(\"isl_take\")))");
PO.addMacroDef("__isl_export=__attribute__((annotate(\"isl_export\")))");
PO.addMacroDef("__isl_overload="
"__attribute__((annotate(\"isl_overload\"))) "
"__attribute__((annotate(\"isl_export\")))");
PO.addMacroDef("__isl_constructor=__attribute__((annotate(\"isl_constructor\"))) __attribute__((annotate(\"isl_export\")))");
PO.addMacroDef("__isl_subclass(super)=__attribute__((annotate(\"isl_subclass(\" #super \")\"))) __attribute__((annotate(\"isl_export\")))");
create_preprocessor(Clang);
Preprocessor &PP = Clang->getPreprocessor();
PP.getBuiltinInfo().initializeBuiltins(PP.getIdentifierTable(), LO);
const FileEntry *file = getFile(Clang, InputFilename);
assert(file);
create_main_file_id(Clang->getSourceManager(), file);
Clang->createASTContext();
MyASTConsumer consumer;
Sema *sema = new Sema(PP, Clang->getASTContext(), consumer);
Diags.getClient()->BeginSourceFile(LO, &PP);
ParseAST(*sema);
Diags.getClient()->EndSourceFile();
generate(consumer, Clang->getSourceManager());
delete sema;
delete Clang;
llvm::llvm_shutdown();
if (Diags.hasErrorOccurred())
return EXIT_FAILURE;
return EXIT_SUCCESS;
}
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