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- /**************************** Listing 1 ****************************/
- /******* *******/
- /******* Add this code to the declarations section of yref2.y, *******/
- /******* between the %{ and %} symbols *******/
- /******* *******/
- /*********************************************************************/
-
- struct symlist /* Linked list for storing line numbers */
- {
- int line; /* Line number for this instance */
- int decl; /* Declaration = 1, reference = 0 */
- struct symlist *next; /* Pointer to next instance */
- };
-
- struct tnode
- {
- char *word; /* Identifier */
- int count; /* Total instances */
- struct symlist *first; /* Pointer to beginning of line list */
- struct symlist *current; /* Pointer to most recent line instance */
- struct tnode *left; /* Pointer to left node in tree */
- struct tnode *right; /* Pointer to right node in tree */
- };
-
- struct tnode *root;
- int yn_decl = 0; /* Declaration = 1, reference = 0 */
-
- struct tnode *addtree(struct tnode *, char *);
- void treeprint(struct tnode *);
- void listprint(struct symlist *, int );
- struct tnode *talloc(void);
- struct symlist *lalloc(void);
-
-