diff options
Diffstat (limited to 'org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/classfmt/FieldInfo.java')
| -rw-r--r-- | org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/classfmt/FieldInfo.java | 562 |
1 files changed, 280 insertions, 282 deletions
diff --git a/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/classfmt/FieldInfo.java b/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/classfmt/FieldInfo.java index 0c371b578c..2bb489e6db 100644 --- a/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/classfmt/FieldInfo.java +++ b/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/classfmt/FieldInfo.java @@ -1,282 +1,280 @@ -package org.eclipse.jdt.internal.compiler.classfmt;
-
-/*
- * (c) Copyright IBM Corp. 2000, 2001.
- * All Rights Reserved.
- */
-import org.eclipse.jdt.internal.compiler.env.*;
-
-import org.eclipse.jdt.internal.compiler.impl.*;
-import org.eclipse.jdt.internal.compiler.ast.*;
-import org.eclipse.jdt.internal.compiler.codegen.*;
-import org.eclipse.jdt.internal.compiler.util.*;
-
-public class FieldInfo extends ClassFileStruct implements AttributeNamesConstants, IBinaryField {
- private Constant constant;
- private boolean isDeprecated;
- private int[] constantPoolOffsets;
- private int accessFlags;
- private char[] name;
- private char[] signature;
- private int attributesCount;
- private int attributeBytes;
-/**
- * @param classFileBytes byte[]
- * @param offsets int[]
- * @param offset int
- */
-public FieldInfo (byte classFileBytes[], int offsets[], int offset) throws ClassFormatException {
- 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.Constant.NotAConstant if there is none.
- * @return org.eclipse.jdt.internal.compiler.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);
- readDeprecatedAttributes();
- 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.
- * Throws a java.ibm.compiler.java.classfmt.ClassFormatException in case the signature is
- * incompatible with the constant tag.
- *
- * @exception java.ibm.compiler.java.classfmt.ClassFormatException
- * @return java.lang.Object
- */
-public Object getWrappedConstantValue() throws ClassFormatException {
-
- int attributesCount = u2At(6);
- int readOffset = 8;
- for (int i = 0; i < attributesCount; i++) {
- int utf8Offset = constantPoolOffsets[u2At(8)] - structOffset;
- char[] attributeName = utf8At(utf8Offset + 3, u2At(utf8Offset + 1));
- if (CharOperation
- .equals(attributeName, ConstantValueName)) {
- // read the right constant
- int relativeOffset = constantPoolOffsets[u2At(14)] - structOffset;
- switch (u1At(relativeOffset)) {
- case IntegerTag :
- return new Integer(i4At(relativeOffset + 1));
- case FloatTag :
- return new Float(floatAt(relativeOffset + 1));
- case DoubleTag :
- return new Double(doubleAt(relativeOffset + 1));
- case LongTag :
- return new Long(i8At(relativeOffset + 1));
- case StringTag :
- utf8Offset = constantPoolOffsets[u2At(relativeOffset + 1)] - structOffset;
- return String.valueOf(utf8At(utf8Offset + 3, u2At(utf8Offset + 1)));
- }
- }
- readOffset += (6 + u4At(readOffset + 2));
- }
- return null;
-}
-/**
- * Return true if the field has a constant value attribute, false otherwise.
- * @return boolean
- */
-public boolean hasConstant() {
- int attributesCount = u2At(6);
- int readOffset = 8;
- boolean isConstant = false;
- for (int i = 0; i < attributesCount; i++) {
- int utf8Offset = constantPoolOffsets[u2At(8)] - structOffset;
- char[] attributeName = utf8At(utf8Offset + 3, u2At(utf8Offset + 1));
- if (CharOperation.equals(attributeName, ConstantValueName)) {
- isConstant = true;
- }
- readOffset += (6 + u4At(readOffset + 2));
- }
- return isConstant;
-}
-/**
- * Return true if the field is a synthetic field, false otherwise.
- * @return boolean
- */
-private boolean isSynthetic() {
- int attributesCount = u2At(6);
- int readOffset = 8;
- boolean isSynthetic = false;
- for (int i = 0; i < attributesCount; i++) {
- int utf8Offset = constantPoolOffsets[u2At(8)] - structOffset;
- char[] attributeName = utf8At(utf8Offset + 3, u2At(utf8Offset + 1));
- if (CharOperation.equals(attributeName, SyntheticName)) {
- isSynthetic = true;
- }
- readOffset += (6 + u4At(readOffset + 2));
- }
- return isSynthetic;
-}
-private void readConstantAttribute() {
- int attributesCount = u2At(6);
- int readOffset = 8;
- boolean isConstant = false;
- for (int i = 0; i < attributesCount; i++) {
- int utf8Offset = constantPoolOffsets[u2At(8)] - structOffset;
- char[] attributeName = utf8At(utf8Offset + 3, u2At(utf8Offset + 1));
- if (CharOperation
- .equals(attributeName, ConstantValueName)) {
- isConstant = true;
- // read the right constant
- int relativeOffset = constantPoolOffsets[u2At(14)] - 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 readDeprecatedAttributes() {
- 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;
- }
- 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("{"/*nonNLS*/)
- .append(
- ((modifiers & AccDeprecated) != 0 ? "deprecated "/*nonNLS*/ : ""/*nonNLS*/)
- + ((modifiers & 0x0001) == 1 ? "public "/*nonNLS*/ : ""/*nonNLS*/)
- + ((modifiers & 0x0002) == 0x0002 ? "private "/*nonNLS*/ : ""/*nonNLS*/)
- + ((modifiers & 0x0004) == 0x0004 ? "protected "/*nonNLS*/ : ""/*nonNLS*/)
- + ((modifiers & 0x0008) == 0x000008 ? "static "/*nonNLS*/ : ""/*nonNLS*/)
- + ((modifiers & 0x0010) == 0x0010 ? "final "/*nonNLS*/ : ""/*nonNLS*/)
- + ((modifiers & 0x0040) == 0x0040 ? "volatile "/*nonNLS*/ : ""/*nonNLS*/)
- + ((modifiers & 0x0080) == 0x0080 ? "transient "/*nonNLS*/ : ""/*nonNLS*/))
- .append(getTypeName())
- .append(" "/*nonNLS*/)
- .append(getName())
- .append(" "/*nonNLS*/)
- .append(getConstant())
- .append("}"/*nonNLS*/)
- .toString();
-}
-}
+package org.eclipse.jdt.internal.compiler.classfmt; + +/* + * (c) Copyright IBM Corp. 2000, 2001. + * All Rights Reserved. + */ +import org.eclipse.jdt.internal.compiler.env.*; + +import org.eclipse.jdt.internal.compiler.impl.*; +import org.eclipse.jdt.internal.compiler.codegen.*; +import org.eclipse.jdt.internal.compiler.util.*; + +public class FieldInfo extends ClassFileStruct implements AttributeNamesConstants, IBinaryField { + private Constant constant; + private boolean isDeprecated; + private int[] constantPoolOffsets; + private int accessFlags; + private char[] name; + private char[] signature; + private int attributeBytes; +/** + * @param classFileBytes byte[] + * @param offsets int[] + * @param offset int + */ +public FieldInfo (byte classFileBytes[], int offsets[], int offset) throws ClassFormatException { + 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.Constant.NotAConstant if there is none. + * @return org.eclipse.jdt.internal.compiler.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); + readDeprecatedAttributes(); + 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. + * Throws a java.ibm.compiler.java.classfmt.ClassFormatException in case the signature is + * incompatible with the constant tag. + * + * @exception java.ibm.compiler.java.classfmt.ClassFormatException + * @return java.lang.Object + */ +public Object getWrappedConstantValue() throws ClassFormatException { + + int attributesCount = u2At(6); + int readOffset = 8; + for (int i = 0; i < attributesCount; i++) { + int utf8Offset = constantPoolOffsets[u2At(8)] - structOffset; + char[] attributeName = utf8At(utf8Offset + 3, u2At(utf8Offset + 1)); + if (CharOperation + .equals(attributeName, ConstantValueName)) { + // read the right constant + int relativeOffset = constantPoolOffsets[u2At(14)] - structOffset; + switch (u1At(relativeOffset)) { + case IntegerTag : + return new Integer(i4At(relativeOffset + 1)); + case FloatTag : + return new Float(floatAt(relativeOffset + 1)); + case DoubleTag : + return new Double(doubleAt(relativeOffset + 1)); + case LongTag : + return new Long(i8At(relativeOffset + 1)); + case StringTag : + utf8Offset = constantPoolOffsets[u2At(relativeOffset + 1)] - structOffset; + return String.valueOf(utf8At(utf8Offset + 3, u2At(utf8Offset + 1))); + } + } + readOffset += (6 + u4At(readOffset + 2)); + } + return null; +} +/** + * Return true if the field has a constant value attribute, false otherwise. + * @return boolean + */ +public boolean hasConstant() { + int attributesCount = u2At(6); + int readOffset = 8; + boolean isConstant = false; + for (int i = 0; i < attributesCount; i++) { + int utf8Offset = constantPoolOffsets[u2At(8)] - structOffset; + char[] attributeName = utf8At(utf8Offset + 3, u2At(utf8Offset + 1)); + if (CharOperation.equals(attributeName, ConstantValueName)) { + isConstant = true; + } + readOffset += (6 + u4At(readOffset + 2)); + } + return isConstant; +} +/** + * Return true if the field is a synthetic field, false otherwise. + * @return boolean + */ +private boolean isSynthetic() { + int attributesCount = u2At(6); + int readOffset = 8; + boolean isSynthetic = false; + for (int i = 0; i < attributesCount; i++) { + int utf8Offset = constantPoolOffsets[u2At(8)] - structOffset; + char[] attributeName = utf8At(utf8Offset + 3, u2At(utf8Offset + 1)); + if (CharOperation.equals(attributeName, SyntheticName)) { + isSynthetic = true; + } + readOffset += (6 + u4At(readOffset + 2)); + } + return isSynthetic; +} +private void readConstantAttribute() { + int attributesCount = u2At(6); + int readOffset = 8; + boolean isConstant = false; + for (int i = 0; i < attributesCount; i++) { + int utf8Offset = constantPoolOffsets[u2At(8)] - structOffset; + char[] attributeName = utf8At(utf8Offset + 3, u2At(utf8Offset + 1)); + if (CharOperation + .equals(attributeName, ConstantValueName)) { + isConstant = true; + // read the right constant + int relativeOffset = constantPoolOffsets[u2At(14)] - 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 readDeprecatedAttributes() { + 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; + } + 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("{"/*nonNLS*/) + .append( + ((modifiers & AccDeprecated) != 0 ? "deprecated "/*nonNLS*/ : ""/*nonNLS*/) + + ((modifiers & 0x0001) == 1 ? "public "/*nonNLS*/ : ""/*nonNLS*/) + + ((modifiers & 0x0002) == 0x0002 ? "private "/*nonNLS*/ : ""/*nonNLS*/) + + ((modifiers & 0x0004) == 0x0004 ? "protected "/*nonNLS*/ : ""/*nonNLS*/) + + ((modifiers & 0x0008) == 0x000008 ? "static "/*nonNLS*/ : ""/*nonNLS*/) + + ((modifiers & 0x0010) == 0x0010 ? "final "/*nonNLS*/ : ""/*nonNLS*/) + + ((modifiers & 0x0040) == 0x0040 ? "volatile "/*nonNLS*/ : ""/*nonNLS*/) + + ((modifiers & 0x0080) == 0x0080 ? "transient "/*nonNLS*/ : ""/*nonNLS*/)) + .append(getTypeName()) + .append(" "/*nonNLS*/) + .append(getName()) + .append(" "/*nonNLS*/) + .append(getConstant()) + .append("}"/*nonNLS*/) + .toString(); +} +} |