/* * 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 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. */publicclass UnaryExpression extends Expression { Expression right; /** * Constructor */ UnaryExpression(int op, long where, Type type, Expression right) { super(op, where, type); this.right = right; } /** * Order the expression based on precedence */ public Expression order() { if (precedence() > right.precedence()) { UnaryExpression e = (UnaryExpression)right; right = e.right; e.right = order(); return e; } return this; } /** * Select the type of the expression */ void selectType(Environment env, Context ctx, int tm) { throw new CompilerError("selectType: " + opNames[op]); } /** * Check a unary expression */ public Vset checkValue(Environment env, Context ctx, Vset vset, Hashtable exp) { vset = right.checkValue(env, ctx, vset, exp); int tm = right.type.getTypeMask(); selectType(env, ctx, tm); if (((tm & TM_ERROR) == 0) && type.isType(TC_ERROR)) { env.error(where, "invalid.arg", opNames[op]); } return vset; } /** * Check if constant */ public boolean isConstant() { switch (op) { case POS: case NEG: case BITNOT: case NOT: case EXPR: case CONVERT: // generated inside of CastExpression return right.isConstant(); } return false; } /** * Evaluate */ Expression eval(int a) { return this; } Expression eval(long a) { return this; } Expression eval(float a) { return this; } Expression eval(double a) { return this; } Expression eval(boolean a) { return this; } Expression eval(String a) { return this; } Expression eval() { switch (right.op) { case BYTEVAL: case CHARVAL: case SHORTVAL: case INTVAL: return eval(((IntegerExpression)right).value); case LONGVAL: return eval(((LongExpression)right).value); case FLOATVAL: return eval(((FloatExpression)right).value); case DOUBLEVAL: return eval(((DoubleExpression)right).value); case BOOLEANVAL: return eval(((BooleanExpression)right).value); case STRINGVAL: return eval(((StringExpression)right).value); } return this; } /** * Inline */ public Expression inline(Environment env, Context ctx) { return right.inline(env, ctx); } public Expression inlineValue(Environment env, Context ctx) { right = right.inlineValue(env, ctx); try { return eval().simplify(); } catch (ArithmeticException e) { // Got rid of this error message. It isn't illegal to // have a program which does a constant division by // zero. We return `this' to make the compiler to // generate code here. // (bugs 4019304, 4089107). // // I am not positive that this catch is ever reached. // // env.error(where, "arithmetic.exception"); return this; } } /** * Create a copy of the expression for method inlining */ public Expression copyInline(Context ctx) { UnaryExpression e = (UnaryExpression)clone(); if (right != null) { e.right = right.copyInline(ctx); } return e; } /** * The cost of inlining this expression */ public int costInline(int thresh, Environment env, Context ctx) { return 1 + right.costInline(thresh, env, ctx); } /** * Print */ public void print(PrintStream out) { out.print("(" + opNames[op] + " "); right.print(out); out.print(")"); }}
/*
* 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 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 UnaryExpression extends Expression {
Expression right;
/**
* Constructor
*/
UnaryExpression(int op, long where, Type type, Expression right) {
super(op, where, type);
this.right = right;
}
/**
* Order the expression based on precedence
*/
public Expression order() {
if (precedence() > right.precedence()) {
UnaryExpression e = (UnaryExpression)right;
right = e.right;
e.right = order();
return e;
}
return this;
}
/**
* Select the type of the expression
*/
void selectType(Environment env, Context ctx, int tm) {
throw new CompilerError("selectType: " + opNames[op]);
}
/**
* Check a unary expression
*/
public Vset checkValue(Environment env, Context ctx, Vset vset, Hashtable exp) {
vset = right.checkValue(env, ctx, vset, exp);
int tm = right.type.getTypeMask();
selectType(env, ctx, tm);
if (((tm & TM_ERROR) == 0) && type.isType(TC_ERROR)) {
env.error(where, "invalid.arg", opNames[op]);
}
return vset;
}
/**
* Check if constant
*/
public boolean isConstant() {
switch (op) {
case POS:
case NEG:
case BITNOT:
case NOT:
case EXPR:
case CONVERT: // generated inside of CastExpression
return right.isConstant();
}
return false;
}
/**
* Evaluate
*/
Expression eval(int a) {
return this;
}
Expression eval(long a) {
return this;
}
Expression eval(float a) {
return this;
}
Expression eval(double a) {
return this;
}
Expression eval(boolean a) {
return this;
}
Expression eval(String a) {
return this;
}
Expression eval() {
switch (right.op) {
case BYTEVAL:
case CHARVAL:
case SHORTVAL:
case INTVAL:
return eval(((IntegerExpression)right).value);
case LONGVAL:
return eval(((LongExpression)right).value);
case FLOATVAL:
return eval(((FloatExpression)right).value);
case DOUBLEVAL:
return eval(((DoubleExpression)right).value);
case BOOLEANVAL:
return eval(((BooleanExpression)right).value);
case STRINGVAL:
return eval(((StringExpression)right).value);
}
return this;
}
/**
* Inline
*/
public Expression inline(Environment env, Context ctx) {
return right.inline(env, ctx);
}
public Expression inlineValue(Environment env, Context ctx) {
right = right.inlineValue(env, ctx);
try {
return eval().simplify();
} catch (ArithmeticException e) {
// Got rid of this error message. It isn't illegal to
// have a program which does a constant division by
// zero. We return `this' to make the compiler to
// generate code here.
// (bugs 4019304, 4089107).
//
// I am not positive that this catch is ever reached.
//
// env.error(where, "arithmetic.exception");
return this;
}
}
/**
* Create a copy of the expression for method inlining
*/
public Expression copyInline(Context ctx) {
UnaryExpression e = (UnaryExpression)clone();
if (right != null) {
e.right = right.copyInline(ctx);
}
return e;
}
/**
* The cost of inlining this expression
*/
public int costInline(int thresh, Environment env, Context ctx) {
return 1 + right.costInline(thresh, env, ctx);
}
/**
* Print
*/
public void print(PrintStream out) {
out.print("(" + opNames[op] + " ");
right.print(out);
out.print(")");
}
}