/* * Copyright (c) 1994, 2003, 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.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * 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.tools.tree; import sun.tools.java.*;import sun.tools.asm.Assembler;import java.io.PrintStream;import java.util.Hashtable; /** * WARNING: The contents of this source file are not part of any * supported API.  Code that depends on them does so at its own risk: * they are subject to change or removal without notice. */publicclass ConvertExpression extends UnaryExpression {    /**     * Constructor     */    public ConvertExpression(long where, Type type, Expression right) {        super(CONVERT, where, type, right);    }     /**     * Check the value     */    public Vset checkValue(Environment env, Context ctx, Vset vset, Hashtable exp) {        return right.checkValue(env, ctx, vset, exp);    }     /**     * Simplify     */    Expression simplify() {        switch (right.op) {          case BYTEVAL:          case CHARVAL:          case SHORTVAL:          case INTVAL: {            int value = ((IntegerExpression)right).value;            switch (type.getTypeCode()) {              case TC_BYTE:     return new ByteExpression(right.where, (byte)value);              case TC_CHAR:     return new CharExpression(right.where, (char)value);              case TC_SHORT:    return new ShortExpression(right.where, (short)value);              case TC_INT:      return new IntExpression(right.where, (int)value);              case TC_LONG:     return new LongExpression(right.where, (long)value);              case TC_FLOAT:    return new FloatExpression(right.where, (float)value);              case TC_DOUBLE:   return new DoubleExpression(right.where, (double)value);            }            break;          }          case LONGVAL: {            long value = ((LongExpression)right).value;            switch (type.getTypeCode()) {              case TC_BYTE:     return new ByteExpression(right.where, (byte)value);              case TC_CHAR:     return new CharExpression(right.where, (char)value);              case TC_SHORT:    return new ShortExpression(right.where, (short)value);              case TC_INT:      return new IntExpression(right.where, (int)value);              case TC_FLOAT:    return new FloatExpression(right.where, (float)value);              case TC_DOUBLE:   return new DoubleExpression(right.where, (double)value);            }            break;          }          case FLOATVAL: {            float value = ((FloatExpression)right).value;            switch (type.getTypeCode()) {              case TC_BYTE:     return new ByteExpression(right.where, (byte)value);              case TC_CHAR:     return new CharExpression(right.where, (char)value);              case TC_SHORT:    return new ShortExpression(right.where, (short)value);              case TC_INT:      return new IntExpression(right.where, (int)value);              case TC_LONG:     return new LongExpression(right.where, (long)value);              case TC_DOUBLE:   return new DoubleExpression(right.where, (double)value);            }            break;          }          case DOUBLEVAL: {            double value = ((DoubleExpression)right).value;            switch (type.getTypeCode()) {              case TC_BYTE:     return new ByteExpression(right.where, (byte)value);              case TC_CHAR:     return new CharExpression(right.where, (char)value);              case TC_SHORT:    return new ShortExpression(right.where, (short)value);              case TC_INT:      return new IntExpression(right.where, (int)value);              case TC_LONG:     return new LongExpression(right.where, (long)value);              case TC_FLOAT:    return new FloatExpression(right.where, (float)value);            }            break;          }        }        return this;    }     /**     * Check if the expression is equal to a value     */    public boolean equals(int i) {        return right.equals(i);    }    public boolean equals(boolean b) {        return right.equals(b);    }     /**     * Inline     */    public Expression inline(Environment env, Context ctx) {        // super.inline throws away the op.        // This is sometimes incorrect, since casts can have side effects.        if (right.type.inMask(TM_REFERENCE) && type.inMask(TM_REFERENCE)) {            try {                if (!env.implicitCast(right.type, type))                    return inlineValue(env, ctx);            } catch (ClassNotFound e) {                throw new CompilerError(e);            }        }        return super.inline(env, ctx);    }     /**     * Code     */    public void codeValue(Environment env, Context ctx, Assembler asm) {        right.codeValue(env, ctx, asm);        codeConversion(env, ctx, asm, right.type, type);    }     /**     * Print     */    public void print(PrintStream out) {        out.print("(" + opNames[op] + " " + type.toString() + " ");        right.print(out);        out.print(")");    }}