Question

鉴于我可以访问IField字段（从另一个Java文件解析），如何创建FieldDeclaration以将其添加到AST？

    String varName = field.getElementName();
    String typeName = Signature.toString(field.getTypeSignature());

    VariableDeclarationFragment fieldFrag = ast.newVariableDeclarationFragment();
    fieldFrag.setName(ast.newSimpleName(varName));
    FieldDeclaration field = ast.newFieldDeclaration(fieldFrag);
    Type fieldType = ast.newSimpleType(ast.newSimpleName(typeName));
    field.setType(fieldType);
    field.modifiers().add(ast.newModifier(modifierKeyword));

以上

输入fieldType = ast.newSimpleType（ast.newSimpleName（typeName））;

仅在typeName不是java关键字时才有效。是否有另一种方法可以简单地创建一个包含所有IField信息（修饰符，类型，变量）的fieldDeclaration

由于

Answer 1

我找到了使用copySubtree的方法：

    AST ast = targetCompilationUnit.getAST();

    FieldDeclaration oldFieldDeclaration = ASTNodeSearchUtil.getFieldDeclarationNode(field, sourceCompilationUnit);
    Type oldType = oldFieldDeclaration.getType();

    Type newType = (Type) ASTNode.copySubtree(ast, oldType);

然后可以使用newType将其插入FieldDeclaration

Answer 2

你可以这样做：

VariableDeclarationFragment fragment = ast.newVariableDeclarationFragment();
fragment.setName(ast.newSimpleName("log"));
final FieldDeclaration declaration = ast.newFieldDeclaration(fragment);
declaration.setType(ast.newSimpleType(ast.newName("Logger")));
declaration.modifiers().addAll(ASTNodeFactory.newModifiers(ast, Modifier.PRIVATE | Modifier.STATIC | Modifier.FINAL));

如果你想初始化它：

MethodInvocation methodInvocation = ast.newMethodInvocation();
methodInvocation.setName(ast.newSimpleName("getLogger"));
methodInvocation.setExpression(ast.newSimpleName("Logger"));
TypeLiteral typeLiteral = ast.newTypeLiteral();
typeLiteral.setType(ast.newSimpleType(ast.newName(className)));
methodInvocation.arguments().add(typeLiteral);
fragment.setInitializer(methodInvocation);

如何在给定Field（Eclipse插件）的情况下创建Field声明

2 个答案: