/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Rhino code, released
* May 6, 1999.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1997-1999
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Norris Boyd
* Bob Jervis
* Roger Lawrence
*
* Alternatively, the contents of this file may be used under the terms of
* the GNU General Public License Version 2 or later (the "GPL"), in which
* case the provisions of the GPL are applicable instead of those above. If
* you wish to allow use of your version of this file only under the terms of
* the GPL and not to allow others to use your version of this file under the
* MPL, indicate your decision by deleting the provisions above and replacing
* them with the notice and other provisions required by the GPL. If you do
* not delete the provisions above, a recipient may use your version of this
* file under either the MPL or the GPL.
*
* ***** END LICENSE BLOCK ***** */
package org.mozilla.javascript.optimizer;
import org.mozilla.javascript.*;
import org.mozilla.javascript.ast.FunctionNode;
import org.mozilla.javascript.ast.ScriptNode;
final class OptFunctionNode
{
OptFunctionNode(FunctionNode fnode)
{
this.fnode = fnode;
fnode.setCompilerData(this);
}
static OptFunctionNode get(ScriptNode scriptOrFn, int i)
{
FunctionNode fnode = scriptOrFn.getFunctionNode(i);
return (OptFunctionNode)fnode.getCompilerData();
}
static OptFunctionNode get(ScriptNode scriptOrFn)
{
return (OptFunctionNode)scriptOrFn.getCompilerData();
}
boolean isTargetOfDirectCall()
{
return directTargetIndex >= 0;
}
int getDirectTargetIndex()
{
return directTargetIndex;
}
void setDirectTargetIndex(int directTargetIndex)
{
// One time action
if (directTargetIndex < 0 || this.directTargetIndex >= 0)
Kit.codeBug();
this.directTargetIndex = directTargetIndex;
}
void setParameterNumberContext(boolean b)
{
itsParameterNumberContext = b;
}
boolean getParameterNumberContext()
{
return itsParameterNumberContext;
}
int getVarCount()
{
return fnode.getParamAndVarCount();
}
boolean isParameter(int varIndex)
{
return varIndex < fnode.getParamCount();
}
boolean isNumberVar(int varIndex)
{
varIndex -= fnode.getParamCount();
if (varIndex >= 0 && numberVarFlags != null) {
return numberVarFlags[varIndex];
}
return false;
}
void setIsNumberVar(int varIndex)
{
varIndex -= fnode.getParamCount();
// Can only be used with non-parameters
if (varIndex < 0) Kit.codeBug();
if (numberVarFlags == null) {
int size = fnode.getParamAndVarCount() - fnode.getParamCount();
numberVarFlags = new boolean[size];
}
numberVarFlags[varIndex] = true;
}
int getVarIndex(Node n)
{
int index = n.getIntProp(Node.VARIABLE_PROP, -1);
if (index == -1) {
Node node;
int type = n.getType();
if (type == Token.GETVAR) {
node = n;
} else if (type == Token.SETVAR ||
type == Token.SETCONSTVAR) {
node = n.getFirstChild();
} else {
throw Kit.codeBug();
}
index = fnode.getIndexForNameNode(node);
if (index < 0) throw Kit.codeBug();
n.putIntProp(Node.VARIABLE_PROP, index);
}
return index;
}
FunctionNode fnode;
private boolean[] numberVarFlags;
private int directTargetIndex = -1;
private boolean itsParameterNumberContext;
boolean itsContainsCalls0;
boolean itsContainsCalls1;
}