软件课程设计
题目：Eclipse ast实现语法树
班级：
学号：
姓名：
指导教师：
时间：
一、课程设计要求：
用Eclipse AST分析java程序所形成的抽象语法树，并通过graphviz画出所对应的图。
二、开发环境：
操作系统：windows 7
开发工具：MyEclipse 8.x Graphviz2.28.0
四、具体代码：
1、获取根节点：
public class LxyAst {
private ASTParser astParser = ASTParser.newParser(AST.JLS3);
static String javaFilePath = "D:\\Users\\Administrator\\Workspaces\\MyEclipse
8.x\\LxyAst\\src\\lxy\\ast\\Test.java";
public CompilationUnit getCompilationUnit(String javaFilePath) throws Exception {
BufferedInputStream bufferedInputStream = new BufferedInputStream(new FileInputStream(javaFilePath));
byte[] input = new byte[bufferedInputStream.available()];
bufferedInputStream.read(input);
bufferedInputStream.close();
this.astParser.setSource(new String(input).toCharArray());
CompilationUnit result = (CompilationUnit) (this.astParser.createAST(null));
return result;
}
2、将节点储存到txt中：
public void writetotext(String str, boolean i) {
try {
FileWriter fw = new FileWriter("E:\\t5.txt", i);
BufferedWriter bw = new BufferedWriter(fw);
bw.write(str);
bw.newLine();
bw.flush();
bw.close();
} catch (IOException e) {
System.out.print(e);
}
}
3、用graphviz画图：
public void Draw() {
Runtime rt = Runtime.getRuntime();
Process p = null;
try {
String s = "D:\\Program Files\\Graphviz 2.28\\bin\\dot E:\\t5.txt -Tpng -o result.png";
p = rt.exec(s);
} catch (Exception e) {
}
}
4、显示结果：
public void open() {
try {
Process p = Runtime.getRuntime().exec("cmd /c cd D:\\Users\\Administrator\\Workspaces\\MyEclipse 8.x\\LxyAst");
Process p2 = Runtime.getRuntime().exec("cmd /c start result.png");
} catch (Exception e) {
}
}
5、遍历语法树：
public void writexly(ASTNode node, String context) {
String wnode, nodename;
Loanode xqnode = new Loanode();
LxyAst xq = new LxyAst();
if (node.getParent() == null) {
xqnode.setMid(id);
xqnode.setPid(-1);
} else {
xqnode.setMid(id);
xqnode.setMnode(node);
for (int i = 0; i
Loanode x = (Loanode) list.get(i);
if (x.getMnode() == node.getParent()) {
xqnode.setPid(x.getMid());
}
}
}
nodename = node.getClass().getName().substring(25);
wnode = "node" + String.valueOf(id) + "[" + "label=\"" + nodename + ":" + context + "\"" + "]" + ";";
xq.writetotext(wnode, true);
list.add(xqnode);
id++;
}
}
读写方法：
public class Loanode {
private int pid;
private int mid;
private ASTNode mnode;
public int getPid() {
return pid;
}
public void setPid(int pid) {
this.pid = pid;
}
public int getMid() {
return mid;
}
public void setMid(int mid) {
this.mid = mid;
}
public ASTNode getMnode() {
return mnode;
}
public void setMnode(ASTNode mnode) { this.mnode = mnode;
}
}
程序运行结果显示：
简单例子：
public class Test {
int a=0;
}
2、带for循环例子：
public class Test {
int a=0;
public static void main(String[] args){ for(int i=0;i
{ int y=0;
y=y+2*(1+1);
}
}
}
六、程序设计中遇到的问题及解决方法：
七、收获和体会：
软件课程设计
题目：Eclipse ast实现语法树
班级：
学号：
姓名：
指导教师：
时间：
一、课程设计要求：
用Eclipse AST分析java程序所形成的抽象语法树，并通过graphviz画出所对应的图。
二、开发环境：
操作系统：windows 7
开发工具：MyEclipse 8.x Graphviz2.28.0
四、具体代码：
1、获取根节点：
public class LxyAst {
private ASTParser astParser = ASTParser.newParser(AST.JLS3);
static String javaFilePath = "D:\\Users\\Administrator\\Workspaces\\MyEclipse
8.x\\LxyAst\\src\\lxy\\ast\\Test.java";
public CompilationUnit getCompilationUnit(String javaFilePath) throws Exception {
BufferedInputStream bufferedInputStream = new BufferedInputStream(new FileInputStream(javaFilePath));
byte[] input = new byte[bufferedInputStream.available()];
bufferedInputStream.read(input);
bufferedInputStream.close();
this.astParser.setSource(new String(input).toCharArray());
CompilationUnit result = (CompilationUnit) (this.astParser.createAST(null));
return result;
}
2、将节点储存到txt中：
public void writetotext(String str, boolean i) {
try {
FileWriter fw = new FileWriter("E:\\t5.txt", i);
BufferedWriter bw = new BufferedWriter(fw);
bw.write(str);
bw.newLine();
bw.flush();
bw.close();
} catch (IOException e) {
System.out.print(e);
}
}
3、用graphviz画图：
public void Draw() {
Runtime rt = Runtime.getRuntime();
Process p = null;
try {
String s = "D:\\Program Files\\Graphviz 2.28\\bin\\dot E:\\t5.txt -Tpng -o result.png";
p = rt.exec(s);
} catch (Exception e) {
}
}
4、显示结果：
public void open() {
try {
Process p = Runtime.getRuntime().exec("cmd /c cd D:\\Users\\Administrator\\Workspaces\\MyEclipse 8.x\\LxyAst");
Process p2 = Runtime.getRuntime().exec("cmd /c start result.png");
} catch (Exception e) {
}
}
5、遍历语法树：
public void writexly(ASTNode node, String context) {
String wnode, nodename;
Loanode xqnode = new Loanode();
LxyAst xq = new LxyAst();
if (node.getParent() == null) {
xqnode.setMid(id);
xqnode.setPid(-1);
} else {
xqnode.setMid(id);
xqnode.setMnode(node);
for (int i = 0; i
Loanode x = (Loanode) list.get(i);
if (x.getMnode() == node.getParent()) {
xqnode.setPid(x.getMid());
}
}
}
nodename = node.getClass().getName().substring(25);
wnode = "node" + String.valueOf(id) + "[" + "label=\"" + nodename + ":" + context + "\"" + "]" + ";";
xq.writetotext(wnode, true);
list.add(xqnode);
id++;
}
}
读写方法：
public class Loanode {
private int pid;
private int mid;
private ASTNode mnode;
public int getPid() {
return pid;
}
public void setPid(int pid) {
this.pid = pid;
}
public int getMid() {
return mid;
}
public void setMid(int mid) {
this.mid = mid;
}
public ASTNode getMnode() {
return mnode;
}
public void setMnode(ASTNode mnode) { this.mnode = mnode;
}
}
程序运行结果显示：
简单例子：
public class Test {
int a=0;
}
2、带for循环例子：
public class Test {
int a=0;
public static void main(String[] args){ for(int i=0;i
{ int y=0;
y=y+2*(1+1);
}
}
}
六、程序设计中遇到的问题及解决方法：
七、收获和体会：