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package com.sun.org.apache.bcel.internal.classfile;

import java.io.DataInput;
import java.io.DataOutputStream;
import java.io.IOException;

import com.sun.org.apache.bcel.internal.Const;

This class represents an entry in the exports table of the Module attribute. Each entry describes a package which may open the parent module.
See Also:
  • Module
Since:6.4.0
/** * This class represents an entry in the exports table of the Module attribute. * Each entry describes a package which may open the parent module. * * @see Module * @since 6.4.0 */
public final class ModuleExports implements Cloneable, Node { private final int exports_index; // points to CONSTANT_Package_info private final int exports_flags; private final int exports_to_count; private final int[] exports_to_index; // points to CONSTANT_Module_info
Construct object from file stream.
Params:
  • file – Input stream
Throws:
  • IOException – if an I/O Exception occurs in readUnsignedShort
/** * Construct object from file stream. * * @param file Input stream * @throws IOException if an I/O Exception occurs in readUnsignedShort */
ModuleExports(final DataInput file) throws IOException { exports_index = file.readUnsignedShort(); exports_flags = file.readUnsignedShort(); exports_to_count = file.readUnsignedShort(); exports_to_index = new int[exports_to_count]; for (int i = 0; i < exports_to_count; i++) { exports_to_index[i] = file.readUnsignedShort(); } }
Called by objects that are traversing the nodes of the tree implicitely defined by the contents of a Java class. I.e., the hierarchy of methods, fields, attributes, etc. spawns a tree of objects.
Params:
  • v – Visitor object
/** * Called by objects that are traversing the nodes of the tree implicitely * defined by the contents of a Java class. I.e., the hierarchy of methods, * fields, attributes, etc. spawns a tree of objects. * * @param v Visitor object */
@Override public void accept( final Visitor v ) { v.visitModuleExports(this); } // TODO add more getters and setters?
Dump table entry to file stream in binary format.
Params:
  • file – Output file stream
Throws:
  • IOException – if an I/O Exception occurs in writeShort
/** * Dump table entry to file stream in binary format. * * @param file Output file stream * @throws IOException if an I/O Exception occurs in writeShort */
public void dump( final DataOutputStream file ) throws IOException { file.writeShort(exports_index); file.writeShort(exports_flags); file.writeShort(exports_to_count); for (final int entry : exports_to_index) { file.writeShort(entry); } }
Returns:String representation
/** * @return String representation */
@Override public String toString() { return "exports(" + exports_index + ", " + exports_flags + ", " + exports_to_count + ", ...)"; }
Returns:Resolved string representation
/** * @return Resolved string representation */
public String toString( final ConstantPool constant_pool ) { final StringBuilder buf = new StringBuilder(); final String package_name = constant_pool.constantToString(exports_index, Const.CONSTANT_Package); buf.append(Utility.compactClassName(package_name, false)); buf.append(", ").append(String.format("%04x", exports_flags)); buf.append(", to(").append(exports_to_count).append("):\n"); for (final int index : exports_to_index) { final String module_name = constant_pool.getConstantString(index, Const.CONSTANT_Module); buf.append(" ").append(Utility.compactClassName(module_name, false)).append("\n"); } return buf.substring(0, buf.length()-1); // remove the last newline }
Returns:deep copy of this object
/** * @return deep copy of this object */
public ModuleExports copy() { try { return (ModuleExports) clone(); } catch (final CloneNotSupportedException e) { // TODO should this throw? } return null; } }