token.c

来自「一个编译器修改的例子」· C语言 代码 · 共 44 行

#include "lex.h"
#include "salloc.h"
#include "token.h"
#include "io.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>



Token *new_token(void)
{
    Token *token	= safe_malloc(sizeof(Token));

    token->name		= safe_strdup(yytext);
    token->file_name	= safe_strdup(input_file_name);
    token->line_number	= current_line;

    return token;
}


void delete_token(Token *token)
{
    if (token != 0)
    {
	free(token->name);
	free(token->file_name);
	free(token);
    }
}

Token *copytoken(Token *source)
{
    Token *token	= safe_malloc(sizeof(Token));

    strcpy(token->name,source->name);
    strcpy(token->file_name,source->name);
    token->line_number	= source->line_number;

    return token;
}