| /* |
| * 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. |
| */ |
| public |
| class 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(")"); |
| } |
| } |