1: package compiler;
2:
3: import java.io.BufferedWriter;
4: import java.io.FileWriter;
5:
6: /**
7: * 组织输入输出接口
8: *
9: * @author jiangnan
10: */
11: public class PL0 {
12:
13:
14: public static final String pcodeFile = "d:\\pcode.txt";
15: public static final String tableFile = "d:\\table.txt";
16: public static final String runtimeFile = "d:\\runtime.txt";
17: public static final String errFile = "d:\\error.txt";
18: public static final String inputFile="d:\\input.txt";
19: public static BufferedWriter pcodeWriter; //输出虚拟机代码
20: public static BufferedWriter runtimeWriter; //输出结果
21: public static BufferedWriter tableWriter; //输出名字表
22: public static BufferedWriter errWriter; //输出错误信息
23:
24: public Praser praser;
25:
26: public PL0(String filepath) {
27: Scanner scan = new Scanner(filepath);
28: praser = new Praser(scan,//词法分析器
29: new SymbolTable(),//名字表
30: new Interpreter());
31: }
32:
33: public boolean compile() {
34: try {
35: pcodeWriter = new BufferedWriter(new FileWriter(pcodeFile));
36: tableWriter = new BufferedWriter(new FileWriter(tableFile));
37: runtimeWriter = new BufferedWriter(new FileWriter(runtimeFile));
38: errWriter = new BufferedWriter(new FileWriter(errFile));
39: praser.nextsym(); //前瞻分析需要预先读入一个符号
40: praser.parse(); //开始语法分析过程（连同语法检查，目标代码生成）
41: pcodeWriter.close();
42: tableWriter.close();
43: runtimeWriter.close();
44: errWriter.close();
45: } catch (Exception e) {
46: e.printStackTrace();
47: System.out.println("***compile error***");
48: } finally {
49:
50: }
51: //编译成功是指完成编译过程并且没有错误
52: return (praser.myErr.errCount == 0);
53: }
54: }
.csharpcode, .csharpcode pre
{
font-size: small;
color: black;
font-family: consolas, "Courier New", courier, monospace;
background-color: #ffffff;
/*white-space: pre;*/
}
.csharpcode pre { margin: 0em; }
.csharpcode .rem { color: #008000; }
.csharpcode .kwrd { color: #0000ff; }
.csharpcode .str { color: #006080; }
.csharpcode .op { color: #0000c0; }
.csharpcode .preproc { color: #cc6633; }
.csharpcode .asp { background-color: #ffff00; }
.csharpcode .html { color: #800000; }
.csharpcode .attr { color: #ff0000; }
.csharpcode .alt
{
background-color: #f4f4f4;
width: 100%;
margin: 0em;
}
.csharpcode .lnum { color: #606060; }