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#define MAX_TOK_LEN 26 /* Hard coded max length of a token */
/*
* Temporary buffer for tokens.
*
*/
typedef struct TokenBuffer_s {
char tok[MAX_TOK_LEN];
int next;
} TokenBuffer;
/*
* Struct that collects parser related data.
*
*/
typedef struct ParserState_s {
char* file_name;
FILE* in;
int cur_line;
TokenBuffer* buf;
} ParserState;
/*
* Used for temporary storage of transitions.
*
*/
typedef struct Quadruple_s {
char* src_state;
char* input;
char* output;
char* to_state;
} Quadruple;
/*
* Stores a transition.
*
*/
typedef struct Transition_s {
char* src_state;
int input;
char* output;
char* to_state;
} Transition;
/*
* The transducer struct.
* num_transitions and max_transitions are used for memory management.
*
*/
typedef struct Transducer_s {
char* start_state;
Transition* transitions;
int num_transitions;
int max_transitions;
ParserState* p;
} Transducer;
/*
* Struct that stores the string file.
* max_chars and num_chars are used for memory management.
*
*/
typedef struct StringFile_s {
char* buf;
int read_pos;
int max_chars;
int num_chars;
} StringFile;
/*
* Struct for output.
*
*/
typedef struct OutputList_s {
struct OutputList_s* next;
char* output;
} OutputList;
/*
* Struct for iterator pattern.
*
*/
typedef struct TransIter_s {
char* src_state;
int input;
Transducer* t;
Transition* found;
} TransIter;
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