我目前正在开发一种执行模式匹配的静态分析工具.我正在使用Flex生成词法分析器,我编写了代码来管理符号表.我对C不太熟悉,所以我决定将符号表实现为线性链表.
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
struct symtab {
int id;
char *name;
int type;
struct symtab *next;
};
enum types {
KEYWORD = 1,
CONSTANT,
IDENTIFIER,
OPERATOR,
DELIMITER,
WHITESPACE
};
struct symtab *last_entry(struct symtab *start)
{
struct symtab *p;
p = start;
while(p -> next != NULL) {
p = p -> next;
}
return p;
}
void add_entry(char* name, int type, struct symtab *start)
{
struct symtab *new;
new = last_entry(start);
int id; …Run Code Online (Sandbox Code Playgroud)