/*
* 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(")");
}
}