47 lines
1.1 KiB
C++
47 lines
1.1 KiB
C++
/** \file lispevalhash.h
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* Storage of executable commands
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*
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*/
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#ifndef __lispevalhash_h__
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#define __lispevalhash_h__
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#include "yacasbase.h"
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#include "lispobject.h"
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#include "lisphash.h"
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#include "evalfunc.h"
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// new-style evaluator, passing arguments onto the stack in LispEnvironment
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typedef void (*YacasEvalCaller)(LispEnvironment& aEnvironment,LispInt aStackTop);
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class YacasEvaluator : public EvalFuncBase
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{
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public:
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// FunctionFlags can be orred when passed to the constructor of this function
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enum FunctionFlags
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{
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Function=0, // Function: evaluate arguments
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Macro=1, // Function: don't evaluate arguments
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Fixed = 0, // fixed number of arguments
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Variable = 2 // variable number of arguments
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};
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YacasEvaluator(YacasEvalCaller aCaller,LispInt aNrArgs, LispInt aFlags)
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: iCaller(aCaller), iNrArgs(aNrArgs), iFlags(aFlags)
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{
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}
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virtual void Evaluate(LispPtr& aResult,LispEnvironment& aEnvironment,
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LispPtr& aArguments);
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private:
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YacasEvalCaller iCaller;
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LispInt iNrArgs;
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LispInt iFlags;
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};
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class YacasCoreCommands : public LispAssociatedHash<YacasEvaluator>
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{
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};
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#endif
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