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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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,
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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.
/** * 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
/** * Constructor */
public ConvertExpression(long where, Type type, Expression right) { super(CONVERT, where, type, right); }
Check the value
/** * Check the value */
public Vset checkValue(Environment env, Context ctx, Vset vset, Hashtable exp) { return right.checkValue(env, ctx, vset, exp); }
Simplify
/** * 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
/** * 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
/** * 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
/** * Code */
public void codeValue(Environment env, Context ctx, Assembler asm) { right.codeValue(env, ctx, asm); codeConversion(env, ctx, asm, right.type, type); }
Print
/** * Print */
public void print(PrintStream out) { out.print("(" + opNames[op] + " " + type.toString() + " "); right.print(out); out.print(")"); } }