JDT随記-ASTNode分類生成

現把一些 Java代碼生成對應的ASTNode方式列出來，供參考：

List 1 生成Package

// package astexplorer;      

java 代碼  

1. PackageDeclaration packageDeclaration = ast.newPackageDeclaration();  
2. unit.setPackage(packageDeclaration);  
3. packageDeclaration.setName(ast.newSimpleName("astexplorer")); 

List 2 生成Import

// import org.eclipse.swt.SWT;
// import org.eclipse.swt.events.*;
// import org.eclipse.swt.graphics.*;
// import org.eclipse.swt.layout.*;
// import org.eclipse.swt.widgets.*;      

java 代碼  

1. for (int i = 0; i < IMPORTS.length; ++i) {  
2. ImportDeclaration importDeclaration = ast.newImportDeclaration();  
3. importDeclaration.setName(ast.newName(getSimpleNames(IMPORTS[i])));  
4. if (IMPORTS[i].indexOf("*") > 0)  
5. importDeclaration.setOnDemand(true);  
6. else  
7. importDeclaration.setOnDemand(false);  
8. unit.imports().add(importDeclaration);  
9. }  

List 3 生成Class Declaration

// public class SampleComposite extends Composite 
      

java 代碼      

1. TypeDeclaration classType = ast.newTypeDeclaration();  
2. classType.setInterface(false);  
3. classType.setModifiers(Modifier.PUBLIC);  
4. classType.setName(ast.newSimpleName("SampleComposite"));  
5. classType.setSuperclass(ast.newSimpleName("Composite"));  
6. unit.types().add(classType);  

// public SampleComposite(Composite parent,int style){}      

java 代碼      

1. MethodDeclaration methodConstructor = ast.newMethodDeclaration();  
2. methodConstructor.setConstructor(true);  
3. methodConstructor.setModifiers(Modifier.PUBLIC);  
4. methodConstructor.setName(ast.newSimpleName("SampleComposite"));  
5. classType.bodyDeclarations().add(methodConstructor);  
6. // constructor parameters  
7. SingleVariableDeclaration variableDeclaration = ast.newSingleVariableDeclaration();  
8. variableDeclaration.setModifiers(Modifier.NONE);  
9. variableDeclaration.setType(ast.newSimpleType(ast.newSimpleName("Composite")));  
10. variableDeclaration.setName(ast.newSimpleName("parent"));  
11. methodConstructor.parameters().add(variableDeclaration);  
12. variableDeclaration = ast.newSingleVariableDeclaration();  
13. variableDeclaration.setModifiers(Modifier.NONE);  
14. variableDeclaration.setType(ast.newPrimitiveType(PrimitiveType.INT));  
15. variableDeclaration.setName(ast.newSimpleName("style"));  
16. methodConstructor.parameters().add(variableDeclaration);  
17. Block constructorBlock = ast.newBlock();  
18. methodConstructor.setBody(constructorBlock);

 // super(parent,style)      

java 代碼      

1. SuperConstructorInvocation superConstructorInvocation = ast.newSuperConstructorInvocation();  
2. constructorBlock.statements().add(superConstructorInvocation);  
3. Expression exp = ast.newSimpleName("parent");  
4. superConstructorInvocation.arguments().add(exp);  
5. superConstructorInvocation.arguments().add(ast.newSimpleName("style"));  

// GridLayout gridLayout = new GridLayout();      

java 代碼      

1. VariableDeclarationFragment vdf = ast.newVariableDeclarationFragment();  
2. vdf.setName(ast.newSimpleName("gridLayout"));  
3. ClassInstanceCreation cc = ast.newClassInstanceCreation();  
4. cc.setName(ast.newSimpleName("GridLayout"));  
5. vdf.setInitializer(cc);  
6. VariableDeclarationStatement vds = ast.newVariableDeclarationStatement(vdf);  
7. vds.setType(ast.newSimpleType(ast.newSimpleName("GridLayout"))); 
8. constructBlock.statements().add(vds);

// Label label = new Label(this,SWT.NONE);      

java 代碼      

1. VariableDeclarationFragment vdf = ast.newVariableDeclarationFragment();  
2. vdf.setName(ast.newSimpleName("label"));  
3. cc = ast.newClassInstanceCreation();  
4. cc.setName(ast.newSimpleName("Label"));  
5. cc.arguments().add(ast.newThisExpression());  
6. cc.arguments().add(ast.newName(getSimpleNames("SWT.NONE")));  
7. vdf.setInitializer(cc); 
8. VariableDeclarationStatement vds = ast.newVariableDeclarationStatement(vdf);  
9. vds.setType(ast.newSimpleType(ast.newSimpleName("Label")));
10. constructBlock.statements().add(vds);

// setLayout(gridLayout);      

java 代碼      

1. MethodInvocation mi = ast.newMethodInvocation();  
2. mi.setName(ast.newSimpleName("setLayout"));  
3. mi.arguments().add(ast.newSimpleName("gridLayout")); 
4. constructorBlock.statements().add(ast.newExpressionStatement(mi));

1. mi = ast.newMethodInvocation();   
2. mi.setExpression(ast.newSimpleName("label"));   
3. mi.setName(ast.newSimpleName("setText"));   
4. StringLiteral sl = ast.newStringLiteral();   
5. sl.setLiteralValue("Press the button to close:");   
6. mi.arguments().add(sl);   
7. constructorBlock.statements().add(ast.newExpressionStatement(mi));  

1. mi = ast.newMethodInvocation();   
2. mi.setExpression(ast.newSimpleName("label"));   
3. mi.setName(ast.newSimpleName("setLayoutData"));   
4. cc = ast.newClassInstanceCreation();   
5. cc.setName(ast.newSimpleName("GridData"));   
6. cc.arguments().add(ast.newName(getSimpleNames("GridData.HORIZONTAL_ALIGN_CENTER")));   
7. mi.arguments().add(cc);   
8. constructorBlock.statements().add(ast.newExpressionStatement(mi));  

 // Button button = new Button(this,SWT.PUSH);

java 代碼

1. vdf = ast.newVariableDeclarationFragment();   
2. vdf.setName(ast.newSimpleName("button"));   
3. vds = ast.newVariableDeclarationStatement(vdf);   
4. vds.setType(ast.newSimpleType(ast.newSimpleName("Button")));   
5. constructorBlock.statements().add(vds);   
6. cc = ast.newClassInstanceCreation();   
7. cc.setName(ast.newSimpleName("Button"));   
8. vdf.setInitializer(cc);   
9. cc.arguments().add(ast.newThisExpression());   
10. cc.arguments().add(ast.newName(getSimpleNames("SWT.PUSH")));  

// button.addSelectionListener(new SelectionAdapter() {});

    java 代碼

1. mi = ast.newMethodInvocation();   
2. constructorBlock.statements().add(ast.newExpressionStatement(mi));   
3. mi.setExpression(ast.newSimpleName("button"));   
4. mi.setName(ast.newSimpleName("addSelectionListener"));   
5. ClassInstanceCreation ci = ast.newClassInstanceCreation();   
6. ci.setName(ast.newSimpleName("SelectionAdapter"));   
7. mi.arguments().add(ci);   
8. AnonymousClassDeclaration cd = ast.newAnonymousClassDeclaration();   
9. ci.setAnonymousClassDeclaration(cd);