# 编译原理

**Repository Path**: zzhpalus/compilation-principle

## Basic Information

- **Project Name**: 编译原理
- **Description**: java实现编译=》词法分析、语法分析
- **Primary Language**: Java
- **License**: MulanPSL-2.0
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2024-10-24
- **Last Updated**: 2024-11-14

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# 编译原理

#### 介绍
java实现编译=》词法分析、语法分析

#### 软件架构
软件架构说明


#### 解析种别码
关键字类
0 => 数字

1 => begin
2 => if
3 => then
4 => while
5 => do
6 => end

10 => 变量名


18 => :=
19 => >
20 => <
21 => <>
22 => <=
24 => =
25 => ;
28 => #
30 => +
31 => -
32 => *
33 => /
34 => (
35 => )
36 => ,
37 => .
38 => :
39 => <-
40 => =>
41 => //
42 => /*
43 => */

不认识的种别
为 -1


#### 使用说明
1.  测试用例说明输入：
begin
x:53; /赋值
if x>0
then a12avc:=2*x;
else a:2*(-x)
/* 这次的实验
就是我的实验
*/
end
最后输入#结束

2.  测试用例说明输出：
line:1  (1, begin)
line:2  (10, x)
line:2  (38, :)
line:2  (0, 53)
line:2  (25, ;)
line:2  (33, /)
line:2  (-1, Error：中文！:赋值)
line:3  (2, if)
line:3  (10, x)
line:3  (-1, >)
line:3  (0, 0)
line:4  (3, then)
line:4  (10, a)
line:4  (0, 12)
line:4  (10, avc)
line:4  (18, :=)
line:4  (0, 2)
line:4  (32, *)
line:4  (10, x)
line:4  (25, ;)
line:5  (10, else)
line:5  (10, a)
line:5  (38, :)
line:5  (0, 2)
line:5  (32, *)
line:5  (34, ()
line:5  (31, -)
line:5  (10, x)
line:5  (35, ))
line:9  (6, end)

2. 实验二语法分析
测试用例1：缺少begin
a := 5;
b := 3 * (a + 2);
end #
#
line:1  (10, a)
line:1  (18, :=)
line:1  (0, 5)
line:1  (25, ;)
line:2  (10, b)
line:2  (18, :=)
line:2  (0, 3)
line:2  (32, *)
line:2  (34, ()
line:2  (10, a)
line:2  (30, +)
line:2  (0, 2)
line:2  (35, ))
line:2  (25, ;)
line:3  (6, end)
line:3  (28, #)
error: syntax analyze - Line 1: Missing 'begin' keyword at the start

测试用例2：缺少end (有bug!)
Enter your code (end with # on a new line): 
begin
a := 5;
b := 3 * (a + 2);
#
line:1  (1, begin)
line:2  (10, a)
line:2  (18, :=)
line:2  (0, 5)
line:2  (25, ;)
line:3  (10, b)
line:3  (18, :=)
line:3  (0, 3)
line:3  (32, *)
line:3  (34, ()
line:3  (10, a)
line:3  (30, +)
line:3  (0, 2)
line:3  (35, ))
line:3  (25, ;)
error: syntax analyze - At the end of input: Missing 'end' keyword

测试用例3： 缺少)
begin
a := (5 + 3;
end #
#
line:1  (1, begin)
line:2  (10, a)
line:2  (18, :=)
line:2  (34, ()
line:2  (0, 5)
line:2  (30, +)
line:2  (0, 3)
line:2  (25, ;)
line:3  (6, end)
line:3  (28, #)
error: syntax analyze - Line 2: Missing closing parenthesis ')'

测试用例4： 缺少:=
Enter your code (end with # on a new line):
begin
a = 5;
end#
#
line:1  (1, begin)
line:2  (10, a)
line:2  (24, =)
line:2  (0, 5)
line:2  (25, ;)
line:3  (6, end)
line:3  (28, #)
error: syntax analyze - Line 2: Missing ':=' after variable name

测试用例5： 缺少; 
begin
a := 5
b := 3 * (a + 2)
end#
#
line:1  (1, begin)
line:2  (10, a)
line:2  (18, :=)
line:2  (0, 5)
line:3  (10, b)
line:3  (18, :=)
line:3  (0, 3)
line:3  (32, *)
line:3  (34, ()
line:3  (10, a)
line:3  (30, +)
line:3  (0, 2)
line:3  (35, ))
line:4  (6, end)
line:4  (28, #)
error: syntax analyze - Line 3: Missing ';' between statements


3.  xxxx

#### 参与贡献

1.  Fork 本仓库
2.  新建 Feat_xxx 分支
3.  提交代码
4.  新建 Pull Request


#### 特技

1.  使用 Readme\_XXX.md 来支持不同的语言，例如 Readme\_en.md, Readme\_zh.md
2.  Gitee 官方博客 [blog.gitee.com](https://blog.gitee.com)
3.  你可以 [https://gitee.com/explore](https://gitee.com/explore) 这个地址来了解 Gitee 上的优秀开源项目
4.  [GVP](https://gitee.com/gvp) 全称是 Gitee 最有价值开源项目，是综合评定出的优秀开源项目
5.  Gitee 官方提供的使用手册 [https://gitee.com/help](https://gitee.com/help)
6.  Gitee 封面人物是一档用来展示 Gitee 会员风采的栏目 [https://gitee.com/gitee-stars/](https://gitee.com/gitee-stars/)