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/* Soot - a J*va Optimization Framework
* Copyright (C) 2003 Ondrej Lhotak
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
package soot;
import java.util.*;
/** Manages the phase options of the various soot phases. */
public class PhaseOptions {
/** Needed for preventing infinite recursion in constructor.
* Termination is assured: each constructor is called exactly once.
* Here is a case analysis.
* a. PackManager used first. Then its constructor needs PhaseOptions,
which also needs a PackManager; OK because we store the
PackManager being initialized in a field.
b. PhaseOptions used first. Then getPM() calls PackManager.v(),
which calls the constr, which sets the .pm field here, uses
PhaseOptions (which uses PackManager), and returns. OK. */
private PackManager pm;
public void setPackManager(PackManager m) { this.pm = m; }
PackManager getPM()
{
if (pm == null)
PackManager.v();
return pm;
}
public PhaseOptions( Singletons.Global g ) { }
public static PhaseOptions v() { return G.v().soot_PhaseOptions(); }
private final Map phaseToOptionMap = new HashMap();
public Map getPhaseOptions(String phaseName) {
return getPhaseOptions(getPM().getPhase(phaseName));
}
public Map getPhaseOptions(HasPhaseOptions phase) {
Map ret = phaseToOptionMap.get(phase);
if( ret == null ) ret = new HashMap();
else ret = new HashMap( ret );
StringTokenizer st = new StringTokenizer( phase.getDefaultOptions() );
while( st.hasMoreTokens() ) {
String opt = st.nextToken();
String key = getKey( opt );
String value = getValue( opt );
if( !ret.containsKey( key ) ) ret.put( key, value );
}
return Collections.unmodifiableMap(ret);
}
public boolean processPhaseOptions(String phaseName, String option) {
StringTokenizer st = new StringTokenizer(option, ",");
while (st.hasMoreTokens()) {
if( !setPhaseOption( phaseName, st.nextToken() ) ) {
return false;
}
}
return true;
}
/** This method returns true iff key "name" is in options
and maps to "true". */
public static boolean getBoolean(Map options, String name)
{
return options.containsKey(name) &&
options.get(name).equals("true");
}
/** This method returns the value of "name" in options
or "" if "name" is not found. */
public static String getString(Map options, String name)
{
return options.containsKey(name) ?
(String)options.get(name) : "";
}
/** This method returns the float value of "name" in options
or 1.0 if "name" is not found. */
public static float getFloat(Map options, String name)
{
return options.containsKey(name) ?
new Float((String)options.get(name)).floatValue() : 1.0f;
}
/** This method returns the integer value of "name" in options
or 0 if "name" is not found. */
public static int getInt(Map options, String name)
{
return options.containsKey(name) ?
new Integer((String)options.get(name)).intValue() : 0;
}
private Map mapForPhase( String phaseName ) {
HasPhaseOptions phase = getPM().getPhase( phaseName );
if( phase == null ) return null;
return mapForPhase( phase );
}
private Map mapForPhase( HasPhaseOptions phase ) {
Map optionMap = phaseToOptionMap.get( phase );
if( optionMap == null ) {
phaseToOptionMap.put( phase, optionMap = new HashMap() );
}
return optionMap;
}
private String getKey( String option ) {
int delimLoc = option.indexOf(":");
if (delimLoc < 0) {
if( option.equals("on") || option.equals("off") ) return "enabled";
return option;
} else {
return option.substring(0, delimLoc);
}
}
private String getValue( String option ) {
int delimLoc = option.indexOf(":");
if (delimLoc < 0) {
if( option.equals("off") ) return "false";
return "true";
} else {
return option.substring(delimLoc+1);
}
}
private void resetRadioPack( String phaseName ) {
for (Pack p : getPM().allPacks()) {
if( !(p instanceof RadioScenePack) ) continue;
if( p.get(phaseName) == null ) continue;
for( Iterator tIt = p.iterator(); tIt.hasNext(); ) {
final Transform t = (Transform) tIt.next();
setPhaseOption( t.getPhaseName(), "enabled:false" );
}
}
}
private boolean checkParentEnabled( String phaseName ) {
if( true ) return true;
for (Pack p : getPM().allPacks()) {
if( getBoolean( getPhaseOptions( p ), "enabled" ) ) continue;
for( Iterator tIt = p.iterator(); tIt.hasNext(); ) {
final Transform t = (Transform) tIt.next();
if( t.getPhaseName().equals( phaseName ) ) {
G.v().out.println( "Attempt to set option for phase "+phaseName+" of disabled pack "+p.getPhaseName() );
return false;
}
}
}
return true;
}
public boolean setPhaseOption( String phaseName, String option ) {
HasPhaseOptions phase = getPM().getPhase( phaseName );
if( phase == null ) {
G.v().out.println( "Option "+option+" given for nonexistent"
+" phase "+phaseName );
return false;
}
return setPhaseOption( phase, option );
}
public boolean setPhaseOption( HasPhaseOptions phase, String option ) {
Map optionMap = mapForPhase( phase );
if( !checkParentEnabled( phase.getPhaseName() ) ) return false;
if( optionMap == null ) {
G.v().out.println( "Option "+option+" given for nonexistent"
+" phase "+phase.getPhaseName() );
return false;
}
String key = getKey( option );
if( key.equals( "enabled" ) && getValue( option ).equals( "true" ) ) {
resetRadioPack( phase.getPhaseName() );
}
if( declaresOption( phase, key ) ) {
optionMap.put( key, getValue( option ) );
return true;
}
G.v().out.println( "Invalid option "+option+" for phase "+phase.getPhaseName() );
return false;
}
private boolean declaresOption( String phaseName, String option ) {
HasPhaseOptions phase = getPM().getPhase( phaseName );
return declaresOption( phase, option );
}
private boolean declaresOption( HasPhaseOptions phase, String option ) {
String declareds = phase.getDeclaredOptions();
for( StringTokenizer st = new StringTokenizer( declareds );
st.hasMoreTokens(); ) {
if( st.nextToken().equals( option ) ) {
return true;
}
}
return false;
}
public void setPhaseOptionIfUnset( String phaseName, String option ) {
Map optionMap = mapForPhase( phaseName );
if( optionMap == null )
throw new RuntimeException( "No such phase "+phaseName );
if( optionMap.containsKey( getKey( option ) ) ) return;
if( !declaresOption( phaseName, getKey( option ) ) )
throw new RuntimeException( "No option "+option+" for phase "+phaseName );
optionMap.put( getKey( option ), getValue( option ) );
}
}
