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45 lines
1.2 KiB
45 lines
1.2 KiB
13 years ago
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#ifndef MARSHALL_H
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#define MARSHALL_H
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#include "smoke.h"
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class SmokeType;
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class Marshall {
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public:
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/**
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* FromSV is used for virtual function return values and regular
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* method arguments.
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*
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* ToSV is used for method return-values and virtual function
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* arguments.
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*/
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typedef void (*HandlerFn)(Marshall *);
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enum Action { FromSV, ToSV };
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virtual SmokeType type() = 0;
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virtual Action action() = 0;
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virtual Smoke::StackItem &item() = 0;
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virtual SV* var() = 0;
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virtual void unsupported() = 0;
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virtual Smoke *smoke() = 0;
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/**
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* For return-values, next() does nothing.
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* For FromSV, next() calls the method and returns.
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* For ToSV, next() calls the virtual function and returns.
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*
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* Required to reset Marshall object to the state it was
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* before being called when it returns.
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*/
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virtual void next() = 0;
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/**
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* For FromSV, cleanup() returns false when the handler should free
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* any allocated memory after next().
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*
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* For ToSV, cleanup() returns true when the handler should delete
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* the pointer passed to it.
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*/
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virtual bool cleanup() = 0;
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virtual ~Marshall() {}
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};
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#endif
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