SnapCode/src/javakit/resolver/JavaPackage.java at master · reportmill/SnapCode · GitHub

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/*
 * Copyright (c) 2010, ReportMill Software. All rights reserved.
 */
package javakit.resolver;
import snap.util.ArrayUtils;

/**
 * This class represents a Java Package.
 */
public class JavaPackage extends JavaDecl {

    // The package
    private JavaPackage  _package;

    // The child declarations (packages and classes)
    protected JavaDecl[] _children;

    // The child packages
    protected JavaPackage[] _packages;

    // The child classes
    protected JavaClass[] _classes;

    /**
     * Constructor.
     */
    public JavaPackage(Resolver aResolver, JavaPackage parentPackage, String packageName)
    {
        super(aResolver, DeclType.Package);

        // Set parent package
        _package = parentPackage;

        // Set Name, SimpleName
        _id = _name = packageName;
        _simpleName = getSimpleName(packageName);

        // If not child of parent package, add
        if (parentPackage != null && parentPackage._children != null) {
            parentPackage._children = ArrayUtils.add(parentPackage._children, this);
            parentPackage._packages = null;
        }
    }

    /**
     * Returns the parent package.
     */
    public JavaPackage getPackage()  { return _package; }

    /**
     * Returns the child packages.
     */
    public JavaPackage[] getPackages()
    {
        if (_packages != null) return _packages;
        JavaDecl[] children = getChildren();
        return _packages = ArrayUtils.filterByClass(children, JavaPackage.class);
    }

    /**
     * Returns the child classes.
     */
    public JavaClass[] getClasses()
    {
        if (_classes != null) return _classes;
        JavaDecl[] children = getChildren();
        return _classes = ArrayUtils.filterByClass(children, JavaClass.class);
    }

    /**
     * Returns the child packages and classes.
     */
    public JavaDecl[] getChildren()
    {
        if (_children != null) return _children;
        return _children = _resolver.getChildrenForPackage(this);
    }

    /**
     * Reloads children.
     */
    void reloadChildrenWithClass(JavaClass aClass)
    {
        if (_children != null) {
            _children = ArrayUtils.add(getChildren(), aClass);
            _classes = null;
        }
    }

    /**
     * Returns the child package for given simple name.
     */
    public JavaPackage getPackageForSimpleName(String simplePackageName)
    {
        JavaPackage[] childPackages = getPackages();
        return ArrayUtils.findMatch(childPackages, pkg -> pkg.getSimpleName().equals(simplePackageName));
    }

    /**
     * Returns the child class for given simple name.
     */
    public JavaClass getClassForSimpleName(String simpleClassName)
    {
        JavaClass[] childClasses = getClasses();
        return ArrayUtils.findMatch(childClasses, cls -> cls.getSimpleName().equals(simpleClassName));
    }

    /**
     * Returns a child class or package for given simple name.
     */
    public JavaDecl getChildForName(String childName)
    {
        JavaDecl[] children = getChildren();
        return ArrayUtils.findMatch(children, child -> child.getSimpleName().equals(childName));
    }

    /**
     * Returns a simple class name.
     */
    private static String getSimpleName(String cname)
    {
        int i = cname.lastIndexOf('$');
        if (i < 0) i = cname.lastIndexOf('.');
        if (i > 0) cname = cname.substring(i + 1);
        return cname;
    }

    /**
     * Prints the tree.
     */
    protected void printTree(String indent)
    {
        System.out.println(indent + getSimpleName());
        String indent2 = indent + "  ";
        for (JavaPackage pkg : getPackages())
            pkg.printTree(indent2);
        for (JavaClass cls : getClasses())
            System.out.println(indent2 + cls.getSimpleName());
    }
}