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/*
* dex2jar - Tools to work with android .dex and java .class files
* Copyright (c) 2009-2013 Panxiaobo
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.googlecode.d2j.dex.writer.ev;
import com.googlecode.d2j.dex.writer.io.DataOut;
import com.googlecode.d2j.dex.writer.item.*;
public class EncodedValue {
public final static int VALUE_ANNOTATION = 0x1d;
public final static int VALUE_ARRAY = 0x1c;
public final static int VALUE_BOOLEAN = 0x1f;
public final static int VALUE_BYTE = 0x00;
public final static int VALUE_CHAR = 0x03;
public final static int VALUE_DOUBLE = 0x11;
public final static int VALUE_ENUM = 0x1b;
public final static int VALUE_FIELD = 0x19;
public final static int VALUE_FLOAT = 0x10;
public final static int VALUE_INT = 0x04;
public final static int VALUE_LONG = 0x06;
public final static int VALUE_METHOD = 0x1a;
public final static int VALUE_NULL = 0x1e;
public final static int VALUE_SHORT = 0x02;
public final static int VALUE_STRING = 0x17;
public final static int VALUE_TYPE = 0x18;
public final int valueType;
public Object value;
public EncodedValue(int valueType, Object value) {
this.valueType = valueType;
this.value = value;
}
public static int lengthOfDouble(double value) {
int requiredBits = 64 - Long.numberOfTrailingZeros(Double.doubleToRawLongBits(value));
if (requiredBits == 0) {
requiredBits = 1;
}
return (requiredBits + 0x07) >> 3;
}
public static int lengthOfFloat(float value) {
int requiredBits = 64 - Long.numberOfTrailingZeros(((long) (Float.floatToRawIntBits(value))) << 32);
if (requiredBits == 0) {
requiredBits = 1;
}
return (requiredBits + 0x07) >> 3;
}
public static int lengthOfSint(int value) {
int nbBits = 33 - Integer.numberOfLeadingZeros(value ^ (value >> 31));
return (nbBits + 0x07) >> 3;
}
public static int lengthOfSint(long value) {
int nbBits = 65 - Long.numberOfLeadingZeros(value ^ (value >> 63));
return (nbBits + 0x07) >> 3;
}
public final static int lengthOfUint(int val) {
int size = 1;
if (val != 0) {
val = val >>> 8;
if (val != 0) {
size++;
val = val >>> 8;
if (val != 0) {
size++;
val = val >>> 8;
if (val != 0) {
size++;
}
}
}
}
return size;
}
public static EncodedValue wrap(Object v) {
if (v == null) {
return new EncodedValue(VALUE_NULL, null);
}
if (v instanceof Integer) {
return new EncodedValue(VALUE_INT, v);
} else if (v instanceof Short) {
return new EncodedValue(VALUE_SHORT, v);
} else if (v instanceof Character) {
return new EncodedValue(VALUE_CHAR, v);
} else if (v instanceof Long) {
return new EncodedValue(VALUE_LONG, v);
} else if (v instanceof Float) {
return new EncodedValue(VALUE_FLOAT, v);
} else if (v instanceof Double) {
return new EncodedValue(VALUE_DOUBLE, v);
} else if (v instanceof Boolean) {
return new EncodedValue(VALUE_BOOLEAN, v);
} else if (v instanceof Byte) {
return new EncodedValue(VALUE_BYTE, v);
} else if (v instanceof TypeIdItem) {
return new EncodedValue(VALUE_TYPE, v);
} else if (v instanceof StringIdItem) {
return new EncodedValue(VALUE_STRING, v);
} else if (v instanceof FieldIdItem) {
return new EncodedValue(VALUE_FIELD, v);
} else if (v instanceof MethodIdItem) {
return new EncodedValue(VALUE_METHOD, v);
}
throw new RuntimeException("not support");
}
public static EncodedValue defaultValueForType(String typeString) {
switch (typeString.charAt(0)) {
case '[':
case 'L':
return new EncodedValue(VALUE_NULL, null);
case 'B':
return new EncodedValue(VALUE_BYTE, (byte) 0);
case 'Z':
return new EncodedValue(VALUE_BOOLEAN, false);
case 'S':
return new EncodedValue(VALUE_SHORT, (short) 0);
case 'C':
return new EncodedValue(VALUE_CHAR, (char) 0);
case 'I':
return new EncodedValue(VALUE_INT, (int) 0);
case 'F':
return new EncodedValue(VALUE_FLOAT, (float) 0);
case 'D':
return new EncodedValue(VALUE_DOUBLE, (double) 0);
case 'J':
return new EncodedValue(VALUE_LONG, (long) 0);
default:
throw new RuntimeException();
}
}
static byte[] encodeLong(int length, long value) {
byte[] data = new byte[length];
switch (length) {
case 8:
data[7] = (byte) (value >> 56);
case 7:
data[6] = (byte) (value >> 48);
case 6:
data[5] = (byte) (value >> 40);
case 5:
data[4] = (byte) (value >> 32);
case 4:
data[3] = (byte) (value >> 24);
case 3:
data[2] = (byte) (value >> 16);
case 2:
data[1] = (byte) (value >> 8);
case 1:
data[0] = (byte) (value >> 0);
break;
default:
throw new RuntimeException();
}
return data;
}
static byte[] encodeSint(int length, int value) {
byte[] data = new byte[length];
switch (length) {
case 4:
data[3] = (byte) (value >> 24);
case 3:
data[2] = (byte) (value >> 16);
case 2:
data[1] = (byte) (value >> 8);
case 1:
data[0] = (byte) (value >> 0);
break;
default:
throw new RuntimeException();
}
return data;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
EncodedValue that = (EncodedValue) o;
if (valueType != that.valueType) return false;
if (value != null ? !value.equals(that.value) : that.value != null) return false;
return true;
}
@Override
public int hashCode() {
int result = valueType;
result = 31 * result + (value != null ? value.hashCode() : 0);
return result;
}
public boolean isDefaultValueForType() {
if (valueType == VALUE_NULL) {
return true;
}
switch (valueType) {
case VALUE_CHAR:
Character c = (Character) this.value;
return c.charValue() == 0;
case VALUE_BYTE:
case VALUE_INT:
case VALUE_SHORT:
return ((Number) this.value).intValue() == 0;
case VALUE_LONG:
return ((Number) this.value).longValue() == 0;
case VALUE_FLOAT:
return ((Number) this.value).floatValue() == 0.0f;
case VALUE_DOUBLE:
return ((Number) this.value).doubleValue() == 0.0;
case VALUE_BOOLEAN:
Boolean z = (Boolean) this.value;
return Boolean.FALSE.equals(z);
}
return false;
}
protected int doPlace(int offset) {
switch (valueType) {
case VALUE_NULL:
case VALUE_BOOLEAN:
return offset;
case VALUE_ARRAY: {
EncodedArray ea = (EncodedArray) value;
return ea.place(offset);
}
case VALUE_ANNOTATION: {
EncodedAnnotation ea = (EncodedAnnotation) value;
return ea.place(offset);
}
case VALUE_STRING:
case VALUE_TYPE:
case VALUE_FIELD:
case VALUE_METHOD:
case VALUE_ENUM:
default:
return offset + getValueArg() + 1;
}
}
protected int getValueArg() {
switch (valueType) {
case VALUE_NULL:
case VALUE_ANNOTATION:
case VALUE_ARRAY:
return 0;
case VALUE_BOOLEAN:
return Boolean.TRUE.equals(value) ? 1 : 0;
case VALUE_BYTE:
return 0;
case VALUE_SHORT:
case VALUE_INT:
return lengthOfSint(((Number) value).intValue()) - 1;
case VALUE_CHAR:
return lengthOfUint(((Character) value).charValue()) - 1;
case VALUE_LONG:
return lengthOfSint(((Number) value).longValue()) - 1;
case VALUE_DOUBLE:
return lengthOfDouble(((Number) value).doubleValue()) - 1;
case VALUE_FLOAT:
return lengthOfFloat(((Number) value).floatValue()) - 1;
case VALUE_STRING:
case VALUE_TYPE:
case VALUE_FIELD:
case VALUE_METHOD:
case VALUE_ENUM:
BaseItem bi = (BaseItem) value;
return lengthOfUint(bi.index) - 1;
}
return 0;
}
final public int place(int offset) {
offset += 1;
return doPlace(offset);
}
public void write(DataOut out) {
int valueArg = getValueArg();
out.ubyte("(value_arg << 5 | value_type", valueArg << 5 | valueType);
switch (valueType) {
case VALUE_NULL:
case VALUE_BOOLEAN:
// nop
break;
case VALUE_SHORT:
out.bytes("value_short", encodeSint(valueArg + 1, (Short) value));
break;
case VALUE_CHAR:
out.bytes("value_char", encodeSint(valueArg + 1, (Character) value));
break;
case VALUE_INT:
out.bytes("value_int", encodeSint(valueArg + 1, (Integer) value));
break;
case VALUE_LONG:
out.bytes("value_long", encodeLong(valueArg + 1, (Long) value));
break;
case VALUE_DOUBLE:
out.bytes("value_double", writeRightZeroExtendedValue(valueArg+1,Double.doubleToLongBits( ((Number) value).doubleValue())));
break;
case VALUE_FLOAT:
out.bytes("value_float", writeRightZeroExtendedValue(valueArg+1,((long)Float.floatToIntBits((((Number) value).floatValue())))<<32));
break;
case VALUE_STRING:
case VALUE_TYPE:
case VALUE_FIELD:
case VALUE_METHOD:
case VALUE_ENUM:
out.bytes("value_xidx", encodeLong(valueArg + 1, ((BaseItem) value).index));
break;
case VALUE_ARRAY: {
EncodedArray ea = (EncodedArray) value;
ea.write(out);
}
break;
case VALUE_ANNOTATION: {
EncodedAnnotation ea = (EncodedAnnotation) value;
ea.write(out);
}
break;
case VALUE_BYTE: {
out.ubyte("value_byte", (Byte) value);
break;
}
default:
throw new RuntimeException();
}
}
private byte[] writeRightZeroExtendedValue(int requiredBytes, long value) {
value >>= 64 - (requiredBytes * 8);
byte[] s = new byte[requiredBytes];
for (int i = 0; i < requiredBytes; i++) {
s[i] = ((byte) value);
value >>= 8;
}
return s;
}
}
