/*
* Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
package sun.jvm.hotspot.oops;
import java.io.*;
import sun.jvm.hotspot.runtime.BasicType;
import sun.jvm.hotspot.utilities.*;
public class FieldType {
private Symbol signature;
private char first;
public FieldType(Symbol signature) {
this.signature = signature;
this.first = (char) signature.getByteAt(0);
if (Assert.ASSERTS_ENABLED) {
switch (this.first) {
case 'B':
case 'C':
case 'D':
case 'F':
case 'I':
case 'J':
case 'S':
case 'Z':
case 'L':
case '[':
break; // Ok. signature char known
default:
Assert.that(false, "Unknown char in field signature \"" + signature.asString() + "\": " + this.first);
}
}
}
public boolean isOop() { return isObject() || isArray(); }
public boolean isByte() { return first == 'B'; }
public boolean isChar() { return first == 'C'; }
public boolean isDouble() { return first == 'D'; }
public boolean isFloat() { return first == 'F'; }
public boolean isInt() { return first == 'I'; }
public boolean isLong() { return first == 'J'; }
public boolean isShort() { return first == 'S'; }
public boolean isBoolean() { return first == 'Z'; }
public boolean isObject() { return first == 'L'; }
public boolean isArray() { return first == '['; }
public Symbol getSignature() { return signature; }
public static class ArrayInfo {
private int dimension;
private int elementBasicType; // See BasicType.java
// FIXME: consider adding name of element class
public ArrayInfo(int dimension, int elementBasicType) {
this.dimension = dimension;
this.elementBasicType = elementBasicType;
}
public int dimension() { return dimension; }
/** See BasicType.java */
public int elementBasicType() { return elementBasicType; }
}
/** Only valid for T_ARRAY; throws unspecified exception otherwise */
public ArrayInfo getArrayInfo() {
int index = 1;
int dim = 1;
index = skipOptionalSize(signature, index);
while (signature.getByteAt(index) == '[') {
index++;
dim++;
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