/*
case_label =
{constant} case minus? integer_constant |
{default} default;
*/
public void outAConstantCaseLabel(AConstantCaseLabel node) {
String s = (String) mProductions.removeLast();
int sign = 1;
if (node.getMinus() != null) sign = -1;
if (s.endsWith("L")) {
mProductions.addLast(LongConstant.v(sign * Long.parseLong(s.substring(0, s.length() - 1))));
} else mProductions.addLast(IntConstant.v(sign * Integer.parseInt(s)));
}
public void outAIntegerConstant(AIntegerConstant node) {
String s = (String) mProductions.removeLast();
StringBuffer buf = new StringBuffer();
if (node.getMinus() != null) buf.append('-');
buf.append(s);
s = buf.toString();
if (s.endsWith("L")) {
mProductions.addLast(LongConstant.v(Long.parseLong(s.substring(0, s.length() - 1))));
} else mProductions.addLast(IntConstant.v(Integer.parseInt(s)));
}
Object decodeDefaultValue() {
Object value = null;
// u1 tag;
int tag = u1At(this.readOffset);
this.readOffset++;
int constValueOffset = -1;
switch (tag) {
case 'Z': // boolean constant
constValueOffset = this.constantPoolOffsets[u2At(this.readOffset)] - this.structOffset;
value = BooleanConstant.fromValue(i4At(constValueOffset + 1) == 1);
this.readOffset += 2;
break;
case 'I': // integer constant
constValueOffset = this.constantPoolOffsets[u2At(this.readOffset)] - this.structOffset;
value = IntConstant.fromValue(i4At(constValueOffset + 1));
this.readOffset += 2;
break;
case 'C': // char constant
constValueOffset = this.constantPoolOffsets[u2At(this.readOffset)] - this.structOffset;
value = CharConstant.fromValue((char) i4At(constValueOffset + 1));
this.readOffset += 2;
break;
case 'B': // byte constant
constValueOffset = this.constantPoolOffsets[u2At(this.readOffset)] - this.structOffset;
value = ByteConstant.fromValue((byte) i4At(constValueOffset + 1));
this.readOffset += 2;
break;
case 'S': // short constant
constValueOffset = this.constantPoolOffsets[u2At(this.readOffset)] - this.structOffset;
value = ShortConstant.fromValue((short) i4At(constValueOffset + 1));
this.readOffset += 2;
break;
case 'D': // double constant
constValueOffset = this.constantPoolOffsets[u2At(this.readOffset)] - this.structOffset;
value = DoubleConstant.fromValue(doubleAt(constValueOffset + 1));
this.readOffset += 2;
break;
case 'F': // float constant
constValueOffset = this.constantPoolOffsets[u2At(this.readOffset)] - this.structOffset;
value = FloatConstant.fromValue(floatAt(constValueOffset + 1));
this.readOffset += 2;
break;
case 'J': // long constant
constValueOffset = this.constantPoolOffsets[u2At(this.readOffset)] - this.structOffset;
value = LongConstant.fromValue(i8At(constValueOffset + 1));
this.readOffset += 2;
break;
case 's': // String
constValueOffset = this.constantPoolOffsets[u2At(this.readOffset)] - this.structOffset;
value =
StringConstant.fromValue(
String.valueOf(utf8At(constValueOffset + 3, u2At(constValueOffset + 1))));
this.readOffset += 2;
break;
case 'e':
constValueOffset = this.constantPoolOffsets[u2At(this.readOffset)] - this.structOffset;
char[] typeName = utf8At(constValueOffset + 3, u2At(constValueOffset + 1));
this.readOffset += 2;
constValueOffset = this.constantPoolOffsets[u2At(this.readOffset)] - this.structOffset;
char[] constName = utf8At(constValueOffset + 3, u2At(constValueOffset + 1));
this.readOffset += 2;
value = new EnumConstantSignature(typeName, constName);
break;
case 'c':
constValueOffset = this.constantPoolOffsets[u2At(this.readOffset)] - this.structOffset;
char[] className = utf8At(constValueOffset + 3, u2At(constValueOffset + 1));
value = new ClassSignature(className);
this.readOffset += 2;
break;
case '@':
value =
new AnnotationInfo(
this.reference,
this.constantPoolOffsets,
this.readOffset + this.structOffset,
false,
true);
this.readOffset += ((AnnotationInfo) value).readOffset;
break;
case '[':
int numberOfValues = u2At(this.readOffset);
this.readOffset += 2;
if (numberOfValues == 0) {
value = EmptyValueArray;
} else {
Object[] arrayElements = new Object[numberOfValues];
value = arrayElements;
for (int i = 0; i < numberOfValues; i++) arrayElements[i] = decodeDefaultValue();
}
break;
default:
throw new IllegalStateException("Unrecognized tag " + (char) tag); // $NON-NLS-1$
}
return value;
}
/**
* Returns a fixed value from any intercepted method. The fixed value is stored in the constant
* pool if this is possible. Java is capable of storing any primitive value, {@link String} values
* and {@link Class} references in the constant pool. Since Java 7, {@code MethodHandle} as well
* as {@code MethodType} references are also supported. Alternatively, the fixed value is stored
* in a static field.
*
* <p>When a value is stored in the class's constant pool, its identity is lost. If an object's
* identity is important, the {@link FixedValue#reference(Object)} method should be used instead.
*
* @param fixedValue The fixed value to return from the method.
* @return An implementation for the given {@code fixedValue}.
*/
public static AssignerConfigurable value(Object fixedValue) {
Class<?> type = fixedValue.getClass();
if (type == String.class) {
return new ForPoolValue(
new TextConstant((String) fixedValue),
TypeDescription.STRING,
Assigner.DEFAULT,
Assigner.Typing.STATIC);
} else if (type == Class.class) {
return new ForPoolValue(
ClassConstant.of(new TypeDescription.ForLoadedType((Class<?>) fixedValue)),
TypeDescription.CLASS,
Assigner.DEFAULT,
Assigner.Typing.STATIC);
} else if (type == Boolean.class) {
return new ForPoolValue(
IntegerConstant.forValue((Boolean) fixedValue),
new TypeDescription.ForLoadedType(boolean.class),
Assigner.DEFAULT,
Assigner.Typing.STATIC);
} else if (type == Byte.class) {
return new ForPoolValue(
IntegerConstant.forValue((Byte) fixedValue),
new TypeDescription.ForLoadedType(byte.class),
Assigner.DEFAULT,
Assigner.Typing.STATIC);
} else if (type == Short.class) {
return new ForPoolValue(
IntegerConstant.forValue((Short) fixedValue),
new TypeDescription.ForLoadedType(short.class),
Assigner.DEFAULT,
Assigner.Typing.STATIC);
} else if (type == Character.class) {
return new ForPoolValue(
IntegerConstant.forValue((Character) fixedValue),
new TypeDescription.ForLoadedType(char.class),
Assigner.DEFAULT,
Assigner.Typing.STATIC);
} else if (type == Integer.class) {
return new ForPoolValue(
IntegerConstant.forValue((Integer) fixedValue),
new TypeDescription.ForLoadedType(int.class),
Assigner.DEFAULT,
Assigner.Typing.STATIC);
} else if (type == Long.class) {
return new ForPoolValue(
LongConstant.forValue((Long) fixedValue),
new TypeDescription.ForLoadedType(long.class),
Assigner.DEFAULT,
Assigner.Typing.STATIC);
} else if (type == Float.class) {
return new ForPoolValue(
FloatConstant.forValue((Float) fixedValue),
new TypeDescription.ForLoadedType(float.class),
Assigner.DEFAULT,
Assigner.Typing.STATIC);
} else if (type == Double.class) {
return new ForPoolValue(
DoubleConstant.forValue((Double) fixedValue),
new TypeDescription.ForLoadedType(double.class),
Assigner.DEFAULT,
Assigner.Typing.STATIC);
} else if (JavaType.METHOD_HANDLE.getTypeStub().isAssignableFrom(type)) {
return new ForPoolValue(
MethodHandleConstant.of(JavaInstance.MethodHandle.of(fixedValue)),
new TypeDescription.ForLoadedType(type),
Assigner.DEFAULT,
Assigner.Typing.STATIC);
} else if (JavaType.METHOD_TYPE.getTypeStub().represents(type)) {
return new ForPoolValue(
MethodTypeConstant.of(JavaInstance.MethodType.of(fixedValue)),
new TypeDescription.ForLoadedType(type),
Assigner.DEFAULT,
Assigner.Typing.STATIC);
} else {
return reference(fixedValue);
}
}
