Compiler Construction Experiment 1
Implementing a Scanner for TINY+
You are to write a lexical analyzer/scanner for the language TINY+.
Goals
1The input of the scanner is a source code file and the output of the scanner is a stream of tokens.
2Your scanner should go for longest possible match i.e. a string ‘:=’ is to be identified as ‘ass-symbol’ rather than ‘:’ and ‘=’.
3Token is represented as (Kind, Value). We use the following symbols to denote different kinds of tokens
KEY denotes reserved words
SYM denotes special symbols
ID denotes identifiers
NUM denotes numeric constants
STR denotes string constants
4Check lexical errors: giving meaning error messages and the lines where errors occur. The kinds of lexical errors are:
Illegal character, that is, scanner may recognize a character that is not in the alphabet of TINY+, such as $ is an illegal character
The right bracket of a STRING is lost, such as ' scanner
The right delimiter of a comment is lost, such as:
{this is an example
Requirements
1Write your program in C or C++
2This experiment must be finished in 4 periods. You will submit a report and the source code
Example output for some TINY+ programs
Test1
or and int bool char
while do if then else
end repeat until read write
, ; := + -
* / ( ) = a2c
123 'EFG'
The scanner should give the outputs:
(KEY, or) (KEY, and) (KEY, int) (KEY, bool)
(KEY, char) (KEY, while) (KEY, do) (KEY, if)
(KEY, then) (KEY, else) (KEY, end) (KEY, repeat)
(KEY, until) (KEY, read) (KEY, write) (SYM, ,)
(SYM, ;) (SYM, :=) (SYM, +) (SYM, -)
(SYM, *) (SYM, /) (SYM, ( ) (SYM, ))
(SYM, ) (SYM, =) (ID, a2c) (NUM, 123) (STR, EFG)
Test2
{this is an example}
int A,B;
bool C1, C2, C3;
char D;
D:= 'scanner';
while A<=B do
A:=A*2
end
The scanner should give the outputs:
(KEY, int) (ID, A) (SYM, ,) (ID, B)
(SYM, ;) (KEY, bool) (ID, C1) (SYM, ,)
(ID, C2) (SYM, ,) (ID, C3
2021-11-05 14:58:00
1.23MB
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华南理工大学的课程设计题目，相应的论文和代码，写得巨详细，保证拿优秀。因为在答辩的时候受到老师刺激，自己写的写得那么努力，结果老师拼命打断。而别人直接在网上 copy 的，呵呵，居然还优了，可以可以。因此我把他上传到网上，大家可以看看我写得怎么样，尽管拿去抄，没有积分的关注我，私聊我会在3天之内发给你。
2021-11-01 14:49:52
2.33MB
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在 Java 语言环境下，通过RMI 实现一个学生成绩或教师信息查询的程序。
要求：要求独立完成。
实验要求：
1. 定义学生成绩查询或教师信息查询的远程接口
2. 实现服务器端软件（程序）：设计远程接口的实现类和服务器对象类，在服务器上启动目录服务，并注册远程对象，供客户端访问。远程接口的实现类要从本地读取
数据信息（成绩或教师信息），数据信息可以存储在文件或数据库中。
3. 实现客户端软件（程序）：实现访问远程对象的客户程序。
2021-10-29 10:31:07
2.56MB
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