ExecutionEnvironment.h

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/*
 * YaST2: Core system
 *
 * Description:
 *   YaST2 execution environment, i.e. processing context.
 *   Contains reference to the current block, the current statement,
 *   the current file name and backtrace.
 *   This information can be used for logging, debugger etc.
 *
 * Authors:
 *   Stanislav Visnovsky <visnov@suse.cz>
 *
 */

#ifndef _execution_environment_h
#define _execution_environment_h

#include <stack>
#include <string>

#include "y2log.h"
#include "ycp/YStatement.h"

using namespace std;

struct CallFrame {
    string called_function;
    string filename;
    int linenumber;

    CallFrame (string f, int l, string func):
        called_function (func),
        filename (f),
        linenumber (l)
    {}
};

class ExecutionEnvironment {

public:
    typedef vector<const CallFrame*> CallStack;
    
private:
    int m_linenumber;
    string m_filename;
    bool m_forced_filename;
    YStatementPtr m_statement;
    CallStack m_backtrace;

public:
    ExecutionEnvironment () : m_filename (""), m_forced_filename (false), m_statement(NULL) 
        { m_backtrace.clear (); };
    ~ExecutionEnvironment() {};

    int linenumber () const;

    void setLinenumber (int line);

    const string filename () const;

    void setFilename (const string & filename);

    YStatementPtr statement () const;

    void setStatement (YStatementPtr s);

    void pushframe (string called_function);

    void popframe ();
    
    void backtrace (loglevel_t level, uint skip = 0) const;

    CallStack callstack() const;
};

#endif /* _execution_environment_h */

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