Example usage for org.eclipse.jdt.core.util IClassFileReader CONSTANT_POOL

Introduction

In this page you can find the example usage for org.eclipse.jdt.core.util IClassFileReader CONSTANT_POOL.

Prototype

int CONSTANT_POOL

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Document

This value should be used to read only the constant pool entries of a .class file.

Usage

From source file:edu.uci.ics.sourcerer.tools.java.extractor.eclipse.NamingAdvisor.java

License:Open Source License

private void addClassFile(IClassFile classFile) {
    IClassFileReader reader = ToolFactory.createDefaultClassFileReader(classFile,
            IClassFileReader.CONSTANT_POOL | IClassFileReader.METHOD_INFOS);
    IConstantPool constants = reader.getConstantPool();
    for (int i = 0, max = constants.getConstantPoolCount(); i < max; i++) {
        switch (constants.getEntryKind(i)) {
        case IConstantPoolConstant.CONSTANT_Class: {
            IConstantPoolEntry constant = constants.decodeEntry(i);
            addClass(new String(constant.getClassInfoName()).replace('/', '.'));
            break;
        }// ww w  .ja  v a  2  s.co  m
        case IConstantPoolConstant.CONSTANT_Fieldref: {
            IConstantPoolEntry constant = constants.decodeEntry(i);
            addClassSig(constant.getFieldDescriptor());
            break;
        }
        case IConstantPoolConstant.CONSTANT_Methodref: {
            IConstantPoolEntry constant = constants.decodeEntry(i);
            addMethod(new String(constant.getClassName()), new String(constant.getMethodName()),
                    constant.getMethodDescriptor());
            break;
        }
        case IConstantPoolConstant.CONSTANT_InterfaceMethodref: {
            IConstantPoolEntry constant = constants.decodeEntry(i);
            addMethod(new String(constant.getClassName()), new String(constant.getMethodName()),
                    constant.getMethodDescriptor());
            break;
        }
        default:
        }
    }

    // Add the method parameter / return types
    for (IMethodInfo method : reader.getMethodInfos()) {
        for (char[] p : Signature.getParameterTypes(method.getDescriptor())) {
            addClassSig(p);
        }
        addClassSig(Signature.getReturnType(method.getDescriptor()));
    }
}

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From source file:org.eclipse.ant.internal.ui.datatransfer.SourceAnalyzer.java

License:Open Source License

/**
 * Find all classes that are required by given class file.
 * /*ww  w  .j av  a2  s.  c  om*/
 * @param file
 *            a ".class" file
 * @return set of strings, each contains a full qualified class name (forward slash as package separator)
 */
public static Set<String> getRequiredClasses(IFile file) {
    Set<String> classes = new TreeSet<>();
    IClassFile classFile = JavaCore.createClassFileFrom(file);
    IClassFileReader reader = ToolFactory.createDefaultClassFileReader(classFile,
            IClassFileReader.CONSTANT_POOL);
    if (reader == null) {
        // class not compiled
        return classes;
    }
    IConstantPool pool = reader.getConstantPool();
    for (int i = 0; i < pool.getConstantPoolCount(); i++) {
        if (pool.getEntryKind(i) == IConstantPoolConstant.CONSTANT_Class) {
            IConstantPoolEntry entry = pool.decodeEntry(i);
            String classname = new String(entry.getClassInfoName());
            // don't return inner classes
            int index = classname.indexOf('$');
            if (index != -1) {
                classname = classname.substring(0, index);
            }
            classes.add(classname);
        }
    }
    return classes;
}

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From source file:org.seasar.diigu.eclipse.operation.NameEnhanceJob.java

License:Apache License

public static IResource toSource(IClassFile clazz) throws CoreException {
    IJavaProject project = clazz.getJavaProject();
    IClassFileReader reader = ToolFactory.createDefaultClassFileReader(clazz, IClassFileReader.CONSTANT_POOL);
    if (reader != null) {
        IConstantPool pool = reader.getConstantPool();
        for (int i = 0; i < pool.getConstantPoolCount(); i++) {
            if (pool.getEntryKind(i) == IConstantPoolConstant.CONSTANT_Class) {
                IConstantPoolEntry entry = pool.decodeEntry(i);
                char[] data = entry.getClassInfoName();
                String name = String.valueOf(data);
                name = name.replace('/', '.');
                IType type = project.findType(name);
                if (type != null && type.isBinary() == false) {
                    return type.getResource();
                }/*  ww w. j  ava  2s.c  om*/
            }
        }
    }
    return null;
}

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