b66d4750fd
I know that the lexers are getting too many and soon I will merge both implementations into one full-blown. Reduces the test failures a lot. git-svn-id: http://root.cern.ch/svn/root/trunk@47652 27541ba8-7e3a-0410-8455-c3a389f83636
77 lines
1.9 KiB
C++
77 lines
1.9 KiB
C++
//--------------------------------------------------------------------*- C++ -*-
|
|
// CLING - the C++ LLVM-based InterpreterG :)
|
|
// version: $Id$
|
|
// author: Axel Naumann <axel@cern.ch>
|
|
//------------------------------------------------------------------------------
|
|
|
|
#ifndef CLING_INPUT_VALIDATOR_H
|
|
#define CLING_INPUT_VALIDATOR_H
|
|
|
|
#include "clang/Basic/TokenKinds.h"
|
|
|
|
#include "llvm/ADT/StringRef.h"
|
|
|
|
#include <stack>
|
|
|
|
namespace clang {
|
|
class LangOptions;
|
|
}
|
|
|
|
namespace cling {
|
|
|
|
///\brief Provides storage for the input and tracks down whether the (, [, {
|
|
/// are balanced.
|
|
///
|
|
class InputValidator {
|
|
private:
|
|
enum {
|
|
kTick = clang::tok::r_brace + 1,
|
|
kQuote
|
|
};
|
|
|
|
///\brief The input being collected.
|
|
///
|
|
std::string m_Input;
|
|
|
|
///\brief Stack used for checking the brace balance.
|
|
///
|
|
std::stack<int> m_ParenStack;
|
|
|
|
public:
|
|
InputValidator() {}
|
|
~InputValidator() {}
|
|
|
|
///\brief Brace balance validation could encounter.
|
|
///
|
|
enum ValidationResult {
|
|
kIncomplete, ///< There is dangling brace.
|
|
kComplete, ///< All braces are in balance.
|
|
kMismatch ///< Closing brace doesn't match to opening. Eg: void f(};
|
|
};
|
|
|
|
///\brief Checks whether the input contains balanced number of braces
|
|
///
|
|
///\param[in] line - Input line to validate.
|
|
///\param[in] LO - Langluage options to validate against.
|
|
///\returns Information about the outcome of the validation.
|
|
///
|
|
ValidationResult validate(llvm::StringRef line);
|
|
|
|
///\returns Reference to the collected input.
|
|
///
|
|
std::string& getInput() {
|
|
return m_Input;
|
|
}
|
|
|
|
///\brief Retrieves the number of spaces that the next input line should be
|
|
/// indented.
|
|
///
|
|
int getExpectedIndent() { return m_ParenStack.size(); }
|
|
|
|
///\brief Resets the collected input and its corresponding brace stack.
|
|
///
|
|
void reset();
|
|
};
|
|
}
|
|
#endif // CLING_INPUT_VALIDATOR_H
|