#ifndef _FLOW_H
#define _FLOW_H
#include <stdio.h>
#include "collections.h"
#include "blocks.h"
#include "graph.h"

typedef struct edge* Edge; 

typedef struct edge_set* EdgeSet; 

extern Graph flow_graph;

void flow_applyToBlocks(void (* func)(Block nodeData));

//void flow_applyToEdges(void (* func)(int from, int to));

void flow_print(char* out);

void flow_printNode(int i, FILE* out);

void edgeset_print(EdgeSet set, FILE* out);

int flow_addBlock(Block data);

void flow_addEdge(int from, int to);

void flow_draw(FILE* stream);

Block flow_block(int b);

void flow_close(void);

/** Returns a list of EdgeSets. */
ArrayList flow_edgeSets(void);

#define flow_children(p) graph_children(flow_graph, p)

#define flow_parents(c) graph_parents(flow_graph, c)

#define flow_size() graph_size(flow_graph)

BitSet edgeset_parents(EdgeSet edges);

BitSet edgeset_children(EdgeSet edges);

int edgeset_depth(EdgeSet edges);
/*
XStack edgeset_xstack(EdgeSet edges);

void edgeset_setXstack(EdgeSet edges, XStack x);
*/

void addEdge(int from, int to);


#endif