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50 lines
1.6 KiB
50 lines
1.6 KiB
/* HintTypeTest Copyright (C) 1999 Jochen Hoenicke.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* $Id$
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*/
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/**
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* The primitive types can give some headaches. You almost never can say
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* if a local variable is of type int, char, short etc. <p>
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*
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* Most times this doesn't matter this much, but with int and character's
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* this can get ugly. <p>
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*
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* The solution is to give every variable a hint, which type it probably is.
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* The hint reset, when the type is not possible. For integer types we try
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* to set it to the smallest explicitly assigned type. <p>
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*
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* Some operators will propagate this hint.<p>
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*/
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public class HintTypeTest {
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public void charLocal() {
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String s= "Hallo";
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for (byte i=0; i< s.length(); i++) {
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char c = s.charAt(i);
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if (c == 'H')
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// The widening to int doesn't occur in byte code, but
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// is necessary. This is really difficult.
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System.err.println("H is "+(int)c);
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else
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System.err.println(""+c+" is "+(int)c);
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}
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}
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}
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