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#ifndef FUNCTION_H_
#define FUNCTION_H_
#include "value.h"
#include "typedefs.h"
#include "feature.h"
#include <string>
#include <vector>
class AbstractFunction
{
private:
const Feature *feature;
public:
AbstractFunction() : feature(NULL) {}
AbstractFunction(const Feature& feature) : feature(&feature) {}
virtual ~AbstractFunction();
virtual bool is_enabled() const { return (feature == NULL) || feature->is_enabled(); };
virtual Value evaluate(const class Context *ctx, const class EvalContext *evalctx) const;
virtual std::string dump(const std::string &indent, const std::string &name) const;
};
class BuiltinFunction : public AbstractFunction
{
public:
typedef Value (*eval_func_t)(const Context *ctx, const EvalContext *evalctx);
eval_func_t eval_func;
BuiltinFunction(eval_func_t f) : eval_func(f) { }
BuiltinFunction(eval_func_t f, const Feature& feature) : AbstractFunction(feature), eval_func(f) { }
virtual ~BuiltinFunction();
virtual Value evaluate(const Context *ctx, const EvalContext *evalctx) const;
virtual std::string dump(const std::string &indent, const std::string &name) const;
};
class Function : public AbstractFunction
{
public:
AssignmentList definition_arguments;
Expression *expr;
Function() { }
virtual ~Function();
virtual Value evaluate(const Context *ctx, const EvalContext *evalctx) const;
virtual std::string dump(const std::string &indent, const std::string &name) const;
};
#endif
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