Eclipse 中的 AST 处理无法解析绑定 [英] bindings not resolving with AST processing in eclipse

问题描述

我正在使用 eclipse JDT AST 解析器来处理一些 Java 代码，并试图提取字段和方法声明的类型绑定.这样做的逻辑在我的访问者类中(见下文).不幸的是，我没有任何运气，并且没有任何绑定正在解析(它们始终为空).有趣的是，这些绑定使用 Eclipse ASTView 插件处理相同的代码.我做错了什么?

I'm using the eclipse JDT AST parser to process some Java code and am trying to extract the type bindings for fields and method declarations. The logic for doing that is inside my Visitor class (see below). Unfortunately, I'm not having any luck and none of the bindings are resolving (they are consistently null). The interesting thing is that the bindings do work on the same code with the eclipse ASTView plugin. What am I doing wrong?

这里有一些相关的代码片段，希望能帮助人们弄清楚发生了什么！

Here are some relevant code snippets which will hopefully help someone figure out what is going on!

ASTParser parser = ASTParser.newParser(AST.JLS3); 
parser.setKind(ASTParser.K_COMPILATION_UNIT);
parser.setSource(source);
parser.setResolveBindings(true);
CompilationUnit unit = (CompilationUnit) parser.createAST(null);

GenericVisitor visitor = new GenericVisitor(outDir + "//" + file.getName() + ".xml");
visitor.process(unit);


public class GenericVisitor extends ASTVisitor 
{
    public void endVisit(FieldDeclaration node) 
    {
        String bindingInfo = "";    
        ITypeBinding binding = node.getType().resolveBinding();

        if(binding == null)
        {                    
         System.out.println("field declaration binding = null");
        }
        else
        {
         bindingInfo = binding.getQualifiedName();
        }

        endVisitNode(node, bindingInfo); 
    }

    public void endVisit(MethodInvocation node) 
    {
         String bindingInfo = "";   
         IMethodBinding binding = node.resolveMethodBinding();

     if(binding == null)
     {                    
        System.out.println("method binding = null");
     }
     else
     {
         bindingInfo = binding.toString();
     }

    endVisitNode(node, bindingInfo); 
    }
} 

推荐答案

当您使用:parser.setSource(source);参数源"的类型是什么?

When you use: parser.setSource(source); What is the type of param "source"?

绑定信息是从Java 模型.这意味着编译单元必须位于相对于 Java 模型.这当源时自动发生代码来自setSource(ICompilationUnit) 或设置源(IClassFile).当来源是由 setSource(char[]) 提供，必须确定位置通过调用显式setProject(IJavaProject) 和setUnitName(String).

Binding information is obtained from the Java model. This means that the compilation unit must be located relative to the Java model. This happens automatically when the source code comes from either setSource(ICompilationUnit) or setSource(IClassFile). When source is supplied by setSource(char[]), the location must be extablished explicitly by calling setProject(IJavaProject) and setUnitName(String).

这是来自 http://help.eclipse.org/galileo/index.jsp?topic=/org.eclipse.jdt.doc.isv/reference/api/org/eclipse/jdt/core/dom/ASTParser.html我想也许你只是使用 setSource(char[]) 而不调用 setProject(IJavaProject) 和 setUnitName(String)

This is from http://help.eclipse.org/galileo/index.jsp?topic=/org.eclipse.jdt.doc.isv/reference/api/org/eclipse/jdt/core/dom/ASTParser.html I think maybe you just use setSource(char[]) without calling setProject(IJavaProject) and setUnitName(String)

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