/*
* @(#)ConvertExpression.java 1.12 95/09/14 Arthur van Hoff
*
* Copyright (c) 1994 Sun Microsystems, Inc. All Rights Reserved.
*
* Permission to use, copy, modify, and distribute this software
* and its documentation for NON-COMMERCIAL purposes and without
* fee is hereby granted provided that this copyright notice
* appears in all copies. Please refer to the file "copyright.html"
* for further important copyright and licensing information.
*
* SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
* THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
* TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
*/
package sun.tools.tree;
import sun.tools.java.*;
import sun.tools.asm.Assembler;
import java.io.PrintStream;
import java.util.Hashtable;
public
class ConvertExpression extends UnaryExpression {
/**
* Constructor
*/
public ConvertExpression(int where, Type type, Expression right) {
super(CONVERT, where, type, right);
}
/**
* Check the value
*/
public long checkValue(Environment env, Context ctx, long 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);
}
/**
* 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(")");
}
}