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#ifndef _H_FUSPEL_GRAPHS
#define _H_FUSPEL_GRAPHS
#include <stdbool.h>
#include "syntax.h"
enum node_kind {
NODE_INT, /* See expr_kind in syntax.h */
NODE_NAME,
NODE_CODE,
NODE_LIST,
NODE_TUPLE,
NODE_APP,
NODE_REDIRECT /* Redirect to another node */
};
struct node {
enum node_kind kind;
void *var1;
void *var2;
unsigned int used_count;
};
void use_node(struct node *node, unsigned int count);
void free_node(struct node *node, unsigned int count, bool free_first);
struct node ***flatten_app_args(struct node **from, bool remove_redirs);
void remove_redirects(struct node *node);
void cpy_expression_to_node(struct node *dst, struct expression *src);
void cpy_node_to_expression(struct expression *dst, struct node *src);
#endif
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