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Diffstat (limited to 'tools/external/asm/org/objectweb/asm/optimizer/ConstantPool.java')
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1 files changed, 198 insertions, 0 deletions
diff --git a/tools/external/asm/org/objectweb/asm/optimizer/ConstantPool.java b/tools/external/asm/org/objectweb/asm/optimizer/ConstantPool.java new file mode 100644 index 000000000..c918bef0f --- /dev/null +++ b/tools/external/asm/org/objectweb/asm/optimizer/ConstantPool.java @@ -0,0 +1,198 @@ +/*** + * ASM: a very small and fast Java bytecode manipulation framework + * Copyright (c) 2000-2005 INRIA, France Telecom + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF + * THE POSSIBILITY OF SUCH DAMAGE. + */ +package org.objectweb.asm.optimizer; + +import java.util.HashMap; + +import org.objectweb.asm.Type; + +/** + * A constant pool. + * + * @author Eric Bruneton + */ +public class ConstantPool extends HashMap { + + private Constant key1 = new Constant(); + + private Constant key2 = new Constant(); + + private Constant key3 = new Constant(); + + public Constant newInteger(final int value) { + key1.set(value); + Constant result = get(key1); + if (result == null) { + result = new Constant(key1); + put(result); + } + return result; + } + + public Constant newFloat(final float value) { + key1.set(value); + Constant result = get(key1); + if (result == null) { + result = new Constant(key1); + put(result); + } + return result; + } + + public Constant newLong(final long value) { + key1.set(value); + Constant result = get(key1); + if (result == null) { + result = new Constant(key1); + put(result); + } + return result; + } + + public Constant newDouble(final double value) { + key1.set(value); + Constant result = get(key1); + if (result == null) { + result = new Constant(key1); + put(result); + } + return result; + } + + public Constant newUTF8(final String value) { + key1.set('s', value, null, null); + Constant result = get(key1); + if (result == null) { + result = new Constant(key1); + put(result); + } + return result; + } + + private Constant newString(final String value) { + key2.set('S', value, null, null); + Constant result = get(key2); + if (result == null) { + newUTF8(value); + result = new Constant(key2); + put(result); + } + return result; + } + + public Constant newClass(final String value) { + key2.set('C', value, null, null); + Constant result = get(key2); + if (result == null) { + newUTF8(value); + result = new Constant(key2); + put(result); + } + return result; + } + + public Constant newConst(final Object cst) { + if (cst instanceof Integer) { + int val = ((Integer) cst).intValue(); + return newInteger(val); + } else if (cst instanceof Float) { + float val = ((Float) cst).floatValue(); + return newFloat(val); + } else if (cst instanceof Long) { + long val = ((Long) cst).longValue(); + return newLong(val); + } else if (cst instanceof Double) { + double val = ((Double) cst).doubleValue(); + return newDouble(val); + } else if (cst instanceof String) { + return newString((String) cst); + } else if (cst instanceof Type) { + Type t = (Type) cst; + return newClass(t.getSort() == Type.OBJECT + ? t.getInternalName() + : t.getDescriptor()); + } else { + throw new IllegalArgumentException("value " + cst); + } + } + + public Constant newField( + final String owner, + final String name, + final String desc) + { + key3.set('G', owner, name, desc); + Constant result = get(key3); + if (result == null) { + newClass(owner); + newNameType(name, desc); + result = new Constant(key3); + put(result); + } + return result; + } + + public Constant newMethod( + final String owner, + final String name, + final String desc, + final boolean itf) + { + key3.set(itf ? 'N' : 'M', owner, name, desc); + Constant result = get(key3); + if (result == null) { + newClass(owner); + newNameType(name, desc); + result = new Constant(key3); + put(result); + } + return result; + } + + public Constant newNameType(final String name, final String desc) { + key2.set('T', name, desc, null); + Constant result = get(key2); + if (result == null) { + newUTF8(name); + newUTF8(desc); + result = new Constant(key2); + put(result); + } + return result; + } + + private Constant get(final Constant key) { + return (Constant) get((Object) key); + } + + private void put(final Constant cst) { + put(cst, cst); + } +}
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