UseStrictInstruction.hpp

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/******************************************************************************/
/* REXX Kernel                                       UseStrictInstruction.hpp */
/*                                                                            */
/* Primitive USE STRICT instruction Class Definitions                         */
/*                                                                            */
/******************************************************************************/
#ifndef Included_RexxInstructionUseStrict
#define Included_RexxInstructionUseStrict
 
#include "RexxInstruction.hpp"
 
class UseVariable
{
public:
    RexxVariableBase *variable;        // the variable accessor
    RexxObject *defaultValue;          // default value for optional variables
    RexxInteger *minimumLength;        // minimum length for abbreviation of named arg name
};
 
 
class RexxInstructionUseStrict : public RexxInstruction {
public:
    inline void *operator new(size_t size, void *ptr) {return ptr;}
    inline void  operator delete(void *) { }
    inline void  operator delete(void *, void *) { }
 
    RexxInstructionUseStrict(size_t, bool, bool, bool, bool, RexxQueue *, RexxQueue *, RexxQueue *);
    inline RexxInstructionUseStrict(RESTORETYPE restoreType) { ; };
    void live(size_t);
    void liveGeneral(int reason);
    void flatten(RexxEnvelope *);
    void execute(RexxActivation *, RexxExpressionStack *);
    void executePositionalArguments(RexxActivation *, RexxExpressionStack *);
    void executeNamedArguments(RexxActivation *, RexxExpressionStack *);
    bool checkNamedArguments(); // check unicity of names declared in USE NAMED ARG
 
protected:
    RexxObject *getArgument(RexxObject **arglist, size_t count, size_t target);
 
    size_t variableCount;            // count of variables to process
    size_t minimumRequired;          // the minimum number of require arguments
    bool variableSize;               // additional arguments allowed after last
    bool strictChecking;             // determines whether to apply strict argument checks
    bool autoCreation;               // use auto named arg
    bool namedArg;                   // use named arg
    UseVariable variables[1];        // List of variables for USE
};
#endif