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#ifndef PARSER_H
#define PARSER_H
#include "util.h"
#include "instrument.h"
/* Parse a complex sheet file so that it is easy to generate complex
sounds. */
/* A unit for the parser. This typically represents one note, but can
serve different purposes. In our format, a unit is given in one
line. */
struct PUnit_s;
typedef struct PUnit_s PUnit;
struct PNote_s;
typedef struct PNote_s PNote;
/* A sheet is just an array of units. But we need to know the length
of the array as well. */
typedef struct {
PUnit *data;
LENT len;
} PSheet;
U_ATTR void print_sheet(const PSheet sh);
/* Might be helpful, or not */
H_ATTR unsigned char is_empty_note(PNote *n);
/* The function to read the sheet. */
U_ATTR PSheet read_sheet(const char *str, LENT len);
/* Destructor */
U_ATTR void destroy_sheet(PSheet sh);
/* Now play sheet */
U_ATTR WaveFrag play_sheet(const PSheet sh, const Volume v);
#endif
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