BlockClass.hpp

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/* Copyright (c) 2005-2009 Rexx Language Association. All rights reserved.    */
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/******************************************************************************/
/* REXX Kernel                                              BlockClass.hpp    */
/*                                                                            */
/* Primitive Rexx contextual source                                           */
/*                                                                            */
/******************************************************************************/
#ifndef Included_RexxSourceLiteral
#define Included_RexxSourceLiteral
 
#include "ObjectClass.hpp"
 
class PackageClass;
class RexxContext;
 
class RexxSourceLiteral : public RexxInternalObject
{
public:
    inline void *operator new(size_t, void *ptr) { return ptr; }
    inline void  operator delete(void *, void *) { ; }
    void *operator new(size_t);
    inline void  operator delete(void *) { ; }
 
    void live(size_t);
    void liveGeneral(int reason);
    void flatten(RexxEnvelope*);
 
    RexxSourceLiteral(RexxString *, PackageClass *, size_t);
    inline RexxSourceLiteral(RESTORETYPE restoreType) { ; };
 
    RexxArray *getSource() { return source; }
    PackageClass *getPackage() { return package; }
    RexxString *getKind() { return kind; }
    RexxObject *getRawExecutable() { return rawExecutable; }
    bool isClosure() { return closure; }
 
    RexxObject  *evaluate(RexxActivation *, RexxExpressionStack *);
 
private:
    RexxArray *source; // The source between curly brackets, including the tag :xxx if any
    PackageClass *package;
    RexxString *kind; // The kind of source : "r", "m", "cl", etc... derived from the source's tag.
    RexxObject *rawExecutable; // A routine or method. Its source is the same as this->source, without the tag.
    bool closure; // true if the source's tag is ::cl...
};
 
 
class RexxBlock : public RexxObject
{
public:
    inline void *operator new(size_t, void *ptr) { return ptr; }
    inline void  operator delete(void *, void *) { ; }
    void *operator new(size_t);
    inline void  operator delete(void *) { ; }
 
    void live(size_t);
    void liveGeneral(int reason);
    void flatten(RexxEnvelope*);
 
    RexxBlock(RexxSourceLiteral *, RexxContext *);
    inline RexxBlock(RESTORETYPE restoreType) { ; };
 
    RexxObject *newRexx(RexxObject **args, size_t argc, size_t named_argc);
    RexxObject *copyRexx();
 
    RexxArray *getSource() { return (RexxArray *)(sourceLiteral->getSource()->copy()); }
    PackageClass *getPackage() { return sourceLiteral->getPackage(); }
    RexxObject *getVariables() { return (RexxObject *)variables; }
    RexxString *getKind() { return sourceLiteral->getKind(); }
    RexxObject *getRawExecutable() { return sourceLiteral->getRawExecutable(); }
 
    static void createInstance();
    static RexxClass *classInstance;   // singleton class instance
 
protected:
    RexxSourceLiteral *sourceLiteral;
    RexxDirectory *variables;
};
 
 
class RexxClosure : public RexxObject
{
public:
    inline void *operator new(size_t, void *ptr) { return ptr; }
    inline void  operator delete(void *, void *) { ; }
    void *operator new(size_t);
    inline void  operator delete(void *) { ; }
 
    void live(size_t);
    void liveGeneral(int reason);
    void flatten(RexxEnvelope*);
 
    RexxClosure(RexxSourceLiteral *, RexxContext *);
    inline RexxClosure(RESTORETYPE restoreType) { ; };
 
    RexxObject *newRexx(RexxObject **args, size_t argc, size_t named_argc);
    RexxObject *copyRexx();
 
    static void createInstance();
    static RexxClass *classInstance;   // singleton class instance
};
 
#endif