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#ifndef PGF_EVALUATOR_H_
#define PGF_EVALUATOR_H_
struct PgfEvalState {
PgfPGF* pgf;
GuPool* pool;
GuExn* err;
GuBuf* stack;
};
typedef struct PgfClosure PgfClosure;
typedef struct PgfEvalState PgfEvalState;
typedef PgfClosure* (*PgfFunction)(PgfEvalState* state, PgfClosure* val);
struct PgfClosure {
PgfFunction code;
};
typedef struct {
PgfClosure header;
PgfAbsFun* absfun;
PgfClosure* args[];
} PgfValue;
PgfClosure*
pgf_evaluate_indirection(PgfEvalState* state, PgfClosure* closure);
PgfClosure*
pgf_evaluate_value(PgfEvalState* state, PgfClosure* closure);
void
pgf_evaluate_save_variables(PgfEvalState* state, PgfValue* val);
void
pgf_evaluate_slide(PgfEvalState* state, size_t a, size_t b);
#endif
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