ack/lang/cem/cemcom/stack.str

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1986-03-10 13:07:55 +00:00
/* $Header$ */
/* IDENTIFIER STACK DEFINITIONS */
/* The identifier stack is implemented as a stack of sets.
The stack is implemented by a doubly linked list,
the sets by singly linked lists.
*/
struct stack_level {
struct stack_level *next;
struct stack_level *sl_next; /* upward link */
struct stack_level *sl_previous; /* downward link */
struct stack_entry *sl_entry; /* sideward link */
arith sl_local_offset; /* @ for first coming object */
arith sl_max_block; /* maximum size of sub-block */
int sl_level;
};
/* ALLOCDEF "stack_level" */
struct stack_entry {
struct stack_entry *next;
struct idf *se_idf;
};
/* ALLOCDEF "stack_entry" */
extern struct stack_level *local_level;
extern struct stack_level *stack_level_of();
extern int level;