99 lines
3.6 KiB
Java
99 lines
3.6 KiB
Java
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* Handle stepping into funtions
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*/
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// when who what
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// 06/27/97 jband added this header to my code
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//
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package com.netscape.jsdebugging.ifcui;
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import com.netscape.jsdebugging.api.*;
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import com.netscape.jsdebugging.ifcui.palomar.util.*;
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class StepInto implements StepHandler
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{
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public StepInto(JSSourceLocation startSourceLocation, JSPC startPC )
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{
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_startSourceLocation = startSourceLocation;
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_startPC = startPC;
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}
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// implement StepHandler
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public int step( JSThreadState threadState,
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JSPC pc,
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JSSourceLocation sourceLocation,
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Hook hook )
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{
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// different script, gotta stop
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if( ! pc.getScript().equals(_startPC.getScript()) )
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return STOP;
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//
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// NOTE: This little dance is necessary because line numbers for PCs
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// are not always acending. e,g, in:
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//
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// for(i=0;i<count;i++)
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// doSomething();
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//
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// The "i++" comes after the "doSomething" call as far as PCs go.
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// But, in JS the line number associated with the "i++" instuction
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// is that of the "for(...". So, the lines for the PC can look like
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// 1,1,2,1,2. Thus we are careful in deciding how to step.
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//
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// definately jumping back
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if( pc.getPC() < _startPC.getPC() &&
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sourceLocation.getLine() != _startSourceLocation.getLine() )
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return STOP;
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// definately jumping forward
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if( sourceLocation.getLine() > _startSourceLocation.getLine() )
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return STOP;
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if(AS.DEBUG){System.out.println( "returning from step_into - not our stop" );}
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return CONTINUE_SEND_INTERRUPT;
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}
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private JSSourceLocation _startSourceLocation;
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private JSPC _startPC;
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}
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