+++ /dev/null
-/*******************************************************************************
- * Copyright (c) 2000, 2004 IBM Corporation and others.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Common Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/cpl-v10.html
- *
- * Contributors:
- * IBM Corporation - initial API and implementation
- *******************************************************************************/
-package org.eclipse.jdt.internal.compiler.classfmt;
-
-import org.eclipse.jdt.core.compiler.CharOperation;
-import org.eclipse.jdt.internal.compiler.codegen.AttributeNamesConstants;
-import org.eclipse.jdt.internal.compiler.env.IBinaryField;
-import org.eclipse.jdt.internal.compiler.impl.BooleanConstant;
-import org.eclipse.jdt.internal.compiler.impl.ByteConstant;
-import org.eclipse.jdt.internal.compiler.impl.CharConstant;
-import org.eclipse.jdt.internal.compiler.impl.Constant;
-import org.eclipse.jdt.internal.compiler.impl.DoubleConstant;
-import org.eclipse.jdt.internal.compiler.impl.FloatConstant;
-import org.eclipse.jdt.internal.compiler.impl.IntConstant;
-import org.eclipse.jdt.internal.compiler.impl.LongConstant;
-import org.eclipse.jdt.internal.compiler.impl.ShortConstant;
-import org.eclipse.jdt.internal.compiler.impl.StringConstant;
-import org.eclipse.jdt.internal.compiler.lookup.TypeIds;
-import org.eclipse.jdt.internal.compiler.util.Util;
-
-public class FieldInfo extends ClassFileStruct implements AttributeNamesConstants, IBinaryField, Comparable, TypeIds {
- private Constant constant;
- private boolean isDeprecated;
- private boolean isSynthetic;
- private int[] constantPoolOffsets;
- private int accessFlags;
- private char[] name;
- private char[] signature;
- private int attributeBytes;
- private Object wrappedConstantValue;
-/**
- * @param classFileBytes byte[]
- * @param offsets int[]
- * @param offset int
- */
-public FieldInfo (byte classFileBytes[], int offsets[], int offset) {
- super(classFileBytes, offset);
- constantPoolOffsets = offsets;
- accessFlags = -1;
- int attributesCount = u2At(6);
- int readOffset = 8;
- for (int i = 0; i < attributesCount; i++) {
- readOffset += (6 + u4At(readOffset + 2));
- }
- attributeBytes = readOffset;
-}
-/**
- * Return the constant of the field.
- * Return org.eclipse.jdt.internal.compiler.impl.Constant.NotAConstant if there is none.
- * @return org.eclipse.jdt.internal.compiler.impl.Constant
- */
-public Constant getConstant() {
- if (constant == null) {
- // read constant
- readConstantAttribute();
- }
- return constant;
-}
-/**
- * Answer an int whose bits are set according the access constants
- * defined by the VM spec.
- * Set the AccDeprecated and AccSynthetic bits if necessary
- * @return int
- */
-public int getModifiers() {
- if (accessFlags == -1) {
- // compute the accessflag. Don't forget the deprecated attribute
- accessFlags = u2At(0);
- readDeprecatedAndSyntheticAttributes();
- if (isDeprecated) {
- accessFlags |= AccDeprecated;
- }
- if (isSynthetic) {
- accessFlags |= AccSynthetic;
- }
- }
- return accessFlags;
-}
-/**
- * Answer the name of the field.
- * @return char[]
- */
-public char[] getName() {
- if (name == null) {
- // read the name
- int utf8Offset = constantPoolOffsets[u2At(2)] - structOffset;
- name = utf8At(utf8Offset + 3, u2At(utf8Offset + 1));
- }
- return name;
-}
-/**
- * Answer the resolved name of the receiver's type in the
- * class file format as specified in section 4.3.2 of the Java 2 VM spec.
- *
- * For example:
- * - java.lang.String is Ljava/lang/String;
- * - an int is I
- * - a 2 dimensional array of strings is [[Ljava/lang/String;
- * - an array of floats is [F
- * @return char[]
- */
-public char[] getTypeName() {
- if (signature == null) {
- // read the signature
- int utf8Offset = constantPoolOffsets[u2At(4)] - structOffset;
- signature = utf8At(utf8Offset + 3, u2At(utf8Offset + 1));
- }
- return signature;
-}
-/**
- * Return a wrapper that contains the constant of the field.
- * @return java.lang.Object
- */
-public Object getWrappedConstantValue() {
-
- if (this.wrappedConstantValue == null) {
- if (hasConstant()) {
- Constant fieldConstant = getConstant();
- switch (fieldConstant.typeID()) {
- case T_int :
- this.wrappedConstantValue = new Integer(fieldConstant.intValue());
- break;
- case T_byte :
- this.wrappedConstantValue = new Byte(fieldConstant.byteValue());
- break;
- case T_short :
- this.wrappedConstantValue = new Short(fieldConstant.shortValue());
- break;
- case T_char :
- this.wrappedConstantValue = new Character(fieldConstant.charValue());
- break;
- case T_float :
- this.wrappedConstantValue = new Float(fieldConstant.floatValue());
- break;
- case T_double :
- this.wrappedConstantValue = new Double(fieldConstant.doubleValue());
- break;
- case T_boolean :
- this.wrappedConstantValue = Util.toBoolean(fieldConstant.booleanValue());
- break;
- case T_long :
- this.wrappedConstantValue = new Long(fieldConstant.longValue());
- break;
- case T_String :
- this.wrappedConstantValue = fieldConstant.stringValue();
- }
- }
- }
- return this.wrappedConstantValue;
-}
-/**
- * Return true if the field has a constant value attribute, false otherwise.
- * @return boolean
- */
-public boolean hasConstant() {
- return getConstant() != Constant.NotAConstant;
-}
-/**
- * Return true if the field is a synthetic field, false otherwise.
- * @return boolean
- */
-public boolean isSynthetic() {
- return (getModifiers() & AccSynthetic) != 0;
-}
-
-private void readConstantAttribute() {
- int attributesCount = u2At(6);
- int readOffset = 8;
- boolean isConstant = false;
- for (int i = 0; i < attributesCount; i++) {
- int utf8Offset = constantPoolOffsets[u2At(readOffset)] - structOffset;
- char[] attributeName = utf8At(utf8Offset + 3, u2At(utf8Offset + 1));
- if (CharOperation
- .equals(attributeName, ConstantValueName)) {
- isConstant = true;
- // read the right constant
- int relativeOffset = constantPoolOffsets[u2At(readOffset + 6)] - structOffset;
- switch (u1At(relativeOffset)) {
- case IntegerTag :
- char[] sign = getTypeName();
- if (sign.length == 1) {
- switch (sign[0]) {
- case 'Z' : // boolean constant
- constant = new BooleanConstant(i4At(relativeOffset + 1) == 1);
- break;
- case 'I' : // integer constant
- constant = new IntConstant(i4At(relativeOffset + 1));
- break;
- case 'C' : // char constant
- constant = new CharConstant((char) i4At(relativeOffset + 1));
- break;
- case 'B' : // byte constant
- constant = new ByteConstant((byte) i4At(relativeOffset + 1));
- break;
- case 'S' : // short constant
- constant = new ShortConstant((short) i4At(relativeOffset + 1));
- break;
- default:
- constant = Constant.NotAConstant;
- }
- } else {
- constant = Constant.NotAConstant;
- }
- break;
- case FloatTag :
- constant = new FloatConstant(floatAt(relativeOffset + 1));
- break;
- case DoubleTag :
- constant = new DoubleConstant(doubleAt(relativeOffset + 1));
- break;
- case LongTag :
- constant = new LongConstant(i8At(relativeOffset + 1));
- break;
- case StringTag :
- utf8Offset = constantPoolOffsets[u2At(relativeOffset + 1)] - structOffset;
- constant =
- new StringConstant(
- String.valueOf(utf8At(utf8Offset + 3, u2At(utf8Offset + 1))));
- break;
- }
- }
- readOffset += (6 + u4At(readOffset + 2));
- }
- if (!isConstant) {
- constant = Constant.NotAConstant;
- }
-}
-private void readDeprecatedAndSyntheticAttributes() {
- int attributesCount = u2At(6);
- int readOffset = 8;
- for (int i = 0; i < attributesCount; i++) {
- int utf8Offset = constantPoolOffsets[u2At(readOffset)] - structOffset;
- char[] attributeName = utf8At(utf8Offset + 3, u2At(utf8Offset + 1));
- if (CharOperation.equals(attributeName, DeprecatedName)) {
- isDeprecated = true;
- } else if (CharOperation.equals(attributeName, SyntheticName)) {
- isSynthetic = true;
- }
- readOffset += (6 + u4At(readOffset + 2));
- }
-}
-/**
- * Answer the size of the receiver in bytes.
- *
- * @return int
- */
-public int sizeInBytes() {
- return attributeBytes;
-}
-public void throwFormatException() throws ClassFormatException {
- throw new ClassFormatException(ClassFormatException.ErrBadFieldInfo);
-}
-public String toString() {
- StringBuffer buffer = new StringBuffer(this.getClass().getName());
- int modifiers = getModifiers();
- return buffer
- .append("{") //$NON-NLS-1$
- .append(
- ((modifiers & AccDeprecated) != 0 ? "deprecated " : "") //$NON-NLS-1$ //$NON-NLS-2$
- + ((modifiers & 0x0001) == 1 ? "public " : "") //$NON-NLS-1$ //$NON-NLS-2$
- + ((modifiers & 0x0002) == 0x0002 ? "private " : "") //$NON-NLS-1$ //$NON-NLS-2$
- + ((modifiers & 0x0004) == 0x0004 ? "protected " : "") //$NON-NLS-1$ //$NON-NLS-2$
- + ((modifiers & 0x0008) == 0x000008 ? "static " : "") //$NON-NLS-1$ //$NON-NLS-2$
- + ((modifiers & 0x0010) == 0x0010 ? "final " : "") //$NON-NLS-1$ //$NON-NLS-2$
- + ((modifiers & 0x0040) == 0x0040 ? "volatile " : "") //$NON-NLS-1$ //$NON-NLS-2$
- + ((modifiers & 0x0080) == 0x0080 ? "transient " : "")) //$NON-NLS-1$ //$NON-NLS-2$
- .append(getTypeName())
- .append(" ") //$NON-NLS-1$
- .append(getName())
- .append(" ") //$NON-NLS-1$
- .append(getConstant())
- .append("}") //$NON-NLS-1$
- .toString();
-}
-
-public int compareTo(Object o) {
- if (!(o instanceof FieldInfo)) {
- throw new ClassCastException();
- }
- return new String(this.getName()).compareTo(new String(((FieldInfo) o).getName()));
-}
-/**
- * This method is used to fully initialize the contents of the receiver. All methodinfos, fields infos
- * will be therefore fully initialized and we can get rid of the bytes.
- */
-void initialize() {
- getModifiers();
- getName();
- getConstant();
- getTypeName();
- reset();
-}
-protected void reset() {
- this.constantPoolOffsets = null;
- super.reset();
-}
-
-}
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