/* | |
* Copyright (c) 1994, 2013, 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 java.io.PrintStream; | |
import java.io.ByteArrayOutputStream; | |
/** | |
* 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 Node implements Constants, Cloneable { | |
int op; | |
long where; | |
/** | |
* Constructor | |
*/ | |
Node(int op, long where) { | |
this.op = op; | |
this.where = where; | |
} | |
/** | |
* Get the operator | |
*/ | |
public int getOp() { | |
return op; | |
} | |
/** | |
* Get where | |
*/ | |
public long getWhere() { | |
return where; | |
} | |
/** | |
* Implicit conversions | |
*/ | |
public Expression convert(Environment env, Context ctx, Type t, Expression e) { | |
if (e.type.isType(TC_ERROR) || t.isType(TC_ERROR)) { | |
// An error was already reported | |
return e; | |
} | |
if (e.type.equals(t)) { | |
// The types are already the same | |
return e; | |
} | |
try { | |
if (e.fitsType(env, ctx, t)) { | |
return new ConvertExpression(where, t, e); | |
} | |
if (env.explicitCast(e.type, t)) { | |
env.error(where, "explicit.cast.needed", opNames[op], e.type, t); | |
return new ConvertExpression(where, t, e); | |
} | |
} catch (ClassNotFound ee) { | |
env.error(where, "class.not.found", ee.name, opNames[op]); | |
} | |
// The cast is not allowed | |
env.error(where, "incompatible.type", opNames[op], e.type, t); | |
return new ConvertExpression(where, Type.tError, e); | |
} | |
/** | |
*/ | |
public void print(PrintStream out) { | |
throw new CompilerError("print"); | |
} | |
/** | |
* Clone this object. | |
*/ | |
public Object clone() { | |
try { | |
return super.clone(); | |
} catch (CloneNotSupportedException e) { | |
// this shouldn't happen, since we are Cloneable | |
throw (InternalError) new InternalError().initCause(e); | |
} | |
} | |
/* | |
* Useful for simple debugging | |
*/ | |
public String toString() { | |
ByteArrayOutputStream bos = new ByteArrayOutputStream(); | |
print(new PrintStream(bos)); | |
return bos.toString(); | |
} | |
} |