icinga2/lib/config/configcompiler.hpp

155 lines
4.8 KiB
C++

/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012-2015 Icinga Development Team (http://www.icinga.org) *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* as published by the Free Software Foundation; either version 2 *
* of the License, or (at your option) any later version. *
* *
* This program 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 this program; if not, write to the Free Software Foundation *
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
******************************************************************************/
#ifndef CONFIGCOMPILER_H
#define CONFIGCOMPILER_H
#include "config/i2-config.hpp"
#include "config/expression.hpp"
#include "base/debuginfo.hpp"
#include "base/registry.hpp"
#include "base/initialize.hpp"
#include "base/singleton.hpp"
#include <boost/function.hpp>
#include <iostream>
#include <stack>
typedef union YYSTYPE YYSTYPE;
typedef void *yyscan_t;
namespace icinga
{
struct CompilerDebugInfo
{
const char *Path;
int FirstLine;
int FirstColumn;
int LastLine;
int LastColumn;
operator DebugInfo(void) const
{
DebugInfo di;
di.Path = Path;
di.FirstLine = FirstLine;
di.FirstColumn = FirstColumn;
di.LastLine = LastLine;
di.LastColumn = LastColumn;
return di;
}
};
struct EItemInfo
{
bool SideEffect;
CompilerDebugInfo DebugInfo;
};
struct ZoneFragment
{
String Tag;
String Path;
};
/**
* The configuration compiler can be used to compile a configuration file
* into a number of configuration items.
*
* @ingroup config
*/
class I2_CONFIG_API ConfigCompiler
{
public:
explicit ConfigCompiler(const String& path, std::istream *input, const String& zone = String());
virtual ~ConfigCompiler(void);
Expression *Compile(void);
static Expression *CompileStream(const String& path, std::istream *stream, bool async = true, const String& zone = String());
static Expression *CompileFile(const String& path, bool async = true, const String& zone = String());
static Expression *CompileText(const String& path, const String& text, bool async = true, const String& zone = String());
static void AddIncludeSearchDir(const String& dir);
const char *GetPath(void) const;
void SetZone(const String& zone);
String GetZone(void) const;
static void CollectIncludes(std::vector<Expression *>& expressions, const String& file, const String& zone);
/* internally used methods */
Expression *HandleInclude(const String& include, bool search, const DebugInfo& debuginfo = DebugInfo());
Expression *HandleIncludeRecursive(const String& path, const String& pattern, const DebugInfo& debuginfo = DebugInfo());
Expression *HandleIncludeZones(const String& tag, const String& path, const String& pattern, const DebugInfo& debuginfo = DebugInfo());
void HandleLibrary(const String& library);
size_t ReadInput(char *buffer, size_t max_bytes);
void *GetScanner(void) const;
static std::vector<ZoneFragment> GetZoneDirs(const String& zone);
static void RegisterZoneDir(const String& tag, const String& ppath, const String& zoneName);
static const std::vector<String>& GetKeywords(void);
private:
boost::promise<boost::shared_ptr<Expression> > m_Promise;
String m_Path;
std::istream *m_Input;
String m_Zone;
void *m_Scanner;
static std::vector<String> m_IncludeSearchDirs;
static std::map<String, std::vector<ZoneFragment> > m_ZoneDirs;
void InitializeScanner(void);
void DestroyScanner(void);
void CompileHelper(void);
void HandleIncludeZone(const String& tag, const String& path, const String& pattern, std::vector<Expression *>& expressions);
public:
bool m_Eof;
int m_OpenBraces;
int m_IgnoreNewlines;
std::ostringstream m_LexBuffer;
CompilerDebugInfo m_LocationBegin;
std::stack<bool> m_Apply;
std::stack<bool> m_ObjectAssign;
std::stack<bool> m_SeenAssign;
std::stack<bool> m_SeenIgnore;
std::stack<Expression *> m_Assign;
std::stack<Expression *> m_Ignore;
std::stack<String> m_FKVar;
std::stack<String> m_FVVar;
std::stack<Expression *> m_FTerm;
};
}
#endif /* CONFIGCOMPILER_H */