6325e7ed19
__cxa_atexit is generated by clang::CodeGen upon seeing the first static destructor. Instead of trying to provoke that we just continue to search for it.
250 lines
7.7 KiB
C++
250 lines
7.7 KiB
C++
//--------------------------------------------------------------------*- C++ -*-
|
|
// CLING - the C++ LLVM-based InterpreterG :)
|
|
// author: Axel Naumann <axel@cern.ch>
|
|
//
|
|
// This file is dual-licensed: you can choose to license it under the University
|
|
// of Illinois Open Source License or the GNU Lesser General Public License. See
|
|
// LICENSE.TXT for details.
|
|
//------------------------------------------------------------------------------
|
|
|
|
#ifndef CLING_INCREMENTAL_PARSER_H
|
|
#define CLING_INCREMENTAL_PARSER_H
|
|
|
|
#include "clang/Basic/SourceLocation.h"
|
|
|
|
#include "llvm/ADT/OwningPtr.h"
|
|
#include "llvm/ADT/SmallVector.h"
|
|
#include "llvm/ADT/StringRef.h"
|
|
|
|
#include <vector>
|
|
#include <deque>
|
|
|
|
namespace llvm {
|
|
struct GenericValue;
|
|
class MemoryBuffer;
|
|
}
|
|
|
|
namespace clang {
|
|
class CodeGenerator;
|
|
class CompilerInstance;
|
|
class Decl;
|
|
class FileID;
|
|
class Parser;
|
|
}
|
|
|
|
namespace cling {
|
|
class CompilationOptions;
|
|
class CIFactory;
|
|
class DeclCollector;
|
|
class ExecutionContext;
|
|
class Interpreter;
|
|
class Transaction;
|
|
class TransactionPool;
|
|
class TransactionTransformer;
|
|
|
|
///\brief Responsible for the incremental parsing and compilation of input.
|
|
///
|
|
/// The class manages the entire process of compilation line-by-line by
|
|
/// appending the compiled delta to clang'a AST. It provides basic operations
|
|
/// on the already compiled code. See cling::Transaction class.
|
|
///
|
|
class IncrementalParser {
|
|
private:
|
|
// our interpreter context
|
|
// FIXME: Get rid of that back reference to the interpreter.
|
|
Interpreter* m_Interpreter;
|
|
|
|
// compiler instance.
|
|
llvm::OwningPtr<clang::CompilerInstance> m_CI;
|
|
|
|
// parser (incremental)
|
|
llvm::OwningPtr<clang::Parser> m_Parser;
|
|
|
|
// One buffer for each command line, owner by the source file manager
|
|
std::deque<llvm::MemoryBuffer*> m_MemoryBuffers;
|
|
|
|
// file ID of the memory buffer
|
|
clang::FileID m_VirtualFileID;
|
|
|
|
// CI owns it
|
|
DeclCollector* m_Consumer;
|
|
|
|
///\brief The storage for our transactions.
|
|
///
|
|
/// We don't need the elements to be contiguous in memory, that is why we
|
|
/// don't use std::vector. We don't need to copy the elements every time the
|
|
/// capacity is exceeded.
|
|
///
|
|
std::deque<Transaction*> m_Transactions;
|
|
|
|
///\brief Code generator
|
|
///
|
|
llvm::OwningPtr<clang::CodeGenerator> m_CodeGen;
|
|
|
|
///\brief Contains the transaction AST transformers.
|
|
///
|
|
llvm::SmallVector<TransactionTransformer*, 6> m_ASTTransformers;
|
|
|
|
///\brief Contains the transaction IR transformers.
|
|
///
|
|
llvm::SmallVector<TransactionTransformer*, 2> m_IRTransformers;
|
|
|
|
///\brief Pool of reusable block-allocated transactions.
|
|
///
|
|
llvm::OwningPtr<TransactionPool> m_TransactionPool;
|
|
|
|
public:
|
|
enum EParseResult {
|
|
kSuccess,
|
|
kSuccessWithWarnings,
|
|
kFailed
|
|
};
|
|
IncrementalParser(Interpreter* interp, int argc, const char* const *argv,
|
|
const char* llvmdir);
|
|
~IncrementalParser();
|
|
|
|
void Initialize();
|
|
clang::CompilerInstance* getCI() const { return m_CI.get(); }
|
|
clang::Parser* getParser() const { return m_Parser.get(); }
|
|
clang::CodeGenerator* getCodeGenerator() const { return m_CodeGen.get(); }
|
|
bool hasCodeGenerator() const { return m_CodeGen.get(); }
|
|
|
|
/// \{
|
|
/// \name Transaction Support
|
|
|
|
///\brief Starts a transaction.
|
|
///
|
|
Transaction* beginTransaction(const CompilationOptions& Opts);
|
|
|
|
///\brief Finishes a transaction.
|
|
///
|
|
Transaction* endTransaction(Transaction* T);
|
|
|
|
///\brief Commits a transaction if it was complete. I.e pipes it
|
|
/// through the consumer chain, including codegen.
|
|
///
|
|
///\param[in] T - the transaction to be committed
|
|
///
|
|
void commitTransaction(Transaction* T);
|
|
|
|
///\brief Runs the consumers (e.g. CodeGen) on a transaction.
|
|
///
|
|
///\param[in] T - the transaction to be consumed
|
|
///
|
|
void codeGenTransaction(Transaction* T);
|
|
|
|
///\brief Reverts the AST into its previous state.
|
|
///
|
|
/// If one of the declarations caused error in clang it is rolled back from
|
|
/// the AST. This is essential feature for the error recovery subsystem.
|
|
///
|
|
///\param[in] T - The transaction to be reverted from the AST
|
|
///
|
|
void rollbackTransaction(Transaction* T) const;
|
|
|
|
///\brief Returns the first transaction the incremental parser saw.
|
|
///
|
|
const Transaction* getFirstTransaction() const {
|
|
if (!m_Transactions.size())
|
|
return 0;
|
|
return m_Transactions.front();
|
|
}
|
|
|
|
///\brief Returns the last transaction the incremental parser saw.
|
|
///
|
|
Transaction* getLastTransaction() {
|
|
if (!m_Transactions.size())
|
|
return 0;
|
|
return m_Transactions.back();
|
|
}
|
|
|
|
///\brief Returns the last transaction the incremental parser saw.
|
|
///
|
|
const Transaction* getLastTransaction() const {
|
|
if (!m_Transactions.size())
|
|
return 0;
|
|
return m_Transactions.back();
|
|
}
|
|
|
|
///\brief Returns the list of transactions seen by the interpreter.
|
|
/// Intentionally makes a copy - that function is meant to be use for debug
|
|
/// purposes.
|
|
///
|
|
std::vector<const Transaction*> getAllTransactions();
|
|
|
|
/// \}
|
|
|
|
///\brief Compiles the given input with the given compilation options.
|
|
///
|
|
///\param[in] input - The code to compile.
|
|
///\param[in] Opts - The compilation options to use.
|
|
///\returns the declarations that were compiled.
|
|
///
|
|
Transaction* Compile(llvm::StringRef input, const CompilationOptions& Opts);
|
|
|
|
///\brief Parses the given input without calling the custom consumers and
|
|
/// code generation.
|
|
///
|
|
/// I.e changes to the decls in the transaction commiting it will cause
|
|
/// different executable code.
|
|
///
|
|
///\param[in] input - The code to parse.
|
|
///\param[in] Opts - The compilation options to use.
|
|
///\returns The transaction corresponding to the input.
|
|
///
|
|
Transaction* Parse(llvm::StringRef input, const CompilationOptions& Opts);
|
|
|
|
///\brief Unloads a given transaction.
|
|
///
|
|
///\param[in] T - The transaction to unload.
|
|
///
|
|
void unloadTransaction(Transaction* T);
|
|
|
|
void printTransactionStructure() const;
|
|
|
|
///\brief Adds a UsedAttr to all decls in the transaction.
|
|
///
|
|
///\param[in] T - the transaction for which all decls will get a UsedAttr.
|
|
///
|
|
void markWholeTransactionAsUsed(Transaction* T) const;
|
|
|
|
///\brief Runs the static initializers created by codegening a transaction.
|
|
///
|
|
///\param[in] T - the transaction for which to run the initializers.
|
|
///
|
|
bool runStaticInitOnTransaction(Transaction* T) const;
|
|
|
|
private:
|
|
///\brief Runs AST transformers on a transaction.
|
|
///
|
|
///\param[in] T - the transaction to be transformed.
|
|
///
|
|
void transformTransactionAST(Transaction* T);
|
|
|
|
///\brief Runs IR transformers on a transaction.
|
|
///
|
|
///\param[in] T - the transaction to be transformed.
|
|
///
|
|
bool transformTransactionIR(Transaction* T) const;
|
|
|
|
///\brief Initializes a virtual file, which will be able to produce valid
|
|
/// source locations, with the proper offsets.
|
|
///
|
|
void initializeVirtualFile();
|
|
|
|
///\brief The work horse for parsing. It queries directly clang.
|
|
///
|
|
///\param[in] input - The incremental input that needs to be parsed.
|
|
///
|
|
EParseResult ParseInternal(llvm::StringRef input);
|
|
|
|
///\brief Return true if this decl (which comes from an AST file) should
|
|
/// not be sent to CodeGen. The module is assumed to describe the contents
|
|
/// of a library; symbols inside the library must thus not be reemitted /
|
|
/// duplicated by CodeGen.
|
|
///
|
|
bool shouldIgnore(const clang::Decl* D) const;
|
|
};
|
|
} // end namespace cling
|
|
#endif // CLING_INCREMENTAL_PARSER_H
|