150 lines
4.3 KiB
Java
150 lines
4.3 KiB
Java
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0
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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 Rhino code, released
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* May 6, 1999.
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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) 1997-1999
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Norris Boyd
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* Bob Jervis
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* Roger Lawrence
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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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* the GNU General Public License Version 2 or later (the "GPL"), in which
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* case the provisions of the GPL are applicable instead of those above. If
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* you wish to allow use of your version of this file only under the terms of
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* the GPL and not to allow others to use your version of this file under the
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* MPL, indicate your decision by deleting the provisions above and replacing
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* them with the notice and other provisions required by the GPL. If you do
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* not delete the provisions above, a recipient may use your version of this
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* file under either the MPL or the GPL.
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*
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* ***** END LICENSE BLOCK ***** */
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package org.mozilla.javascript.optimizer;
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import org.mozilla.javascript.*;
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final class OptFunctionNode
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{
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OptFunctionNode(FunctionNode fnode)
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{
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this.fnode = fnode;
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fnode.setCompilerData(this);
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}
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static OptFunctionNode get(ScriptOrFnNode scriptOrFn, int i)
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{
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FunctionNode fnode = scriptOrFn.getFunctionNode(i);
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return (OptFunctionNode)fnode.getCompilerData();
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}
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static OptFunctionNode get(ScriptOrFnNode scriptOrFn)
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{
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return (OptFunctionNode)scriptOrFn.getCompilerData();
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}
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boolean isTargetOfDirectCall()
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{
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return directTargetIndex >= 0;
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}
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int getDirectTargetIndex()
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{
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return directTargetIndex;
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}
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void setDirectTargetIndex(int directTargetIndex)
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{
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// One time action
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if (directTargetIndex < 0 || this.directTargetIndex >= 0)
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Kit.codeBug();
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this.directTargetIndex = directTargetIndex;
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}
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void setParameterNumberContext(boolean b)
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{
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itsParameterNumberContext = b;
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}
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boolean getParameterNumberContext()
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{
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return itsParameterNumberContext;
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}
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int getVarCount()
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{
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return fnode.getParamAndVarCount();
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}
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boolean isParameter(int varIndex)
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{
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return varIndex < fnode.getParamCount();
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}
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boolean isNumberVar(int varIndex)
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{
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varIndex -= fnode.getParamCount();
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if (varIndex >= 0 && numberVarFlags != null) {
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return numberVarFlags[varIndex];
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}
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return false;
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}
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void setIsNumberVar(int varIndex)
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{
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varIndex -= fnode.getParamCount();
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// Can only be used with non-parameters
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if (varIndex < 0) Kit.codeBug();
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if (numberVarFlags == null) {
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int size = fnode.getParamAndVarCount() - fnode.getParamCount();
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numberVarFlags = new boolean[size];
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}
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numberVarFlags[varIndex] = true;
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}
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int getVarIndex(Node n)
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{
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int index = n.getIntProp(Node.VARIABLE_PROP, -1);
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if (index == -1) {
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Node node;
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int type = n.getType();
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if (type == Token.GETVAR) {
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node = n;
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} else if (type == Token.SETVAR ||
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type == Token.SETCONSTVAR) {
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node = n.getFirstChild();
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} else {
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throw Kit.codeBug();
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}
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index = fnode.getIndexForNameNode(node);
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if (index < 0) throw Kit.codeBug();
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n.putIntProp(Node.VARIABLE_PROP, index);
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}
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return index;
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}
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FunctionNode fnode;
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private boolean[] numberVarFlags;
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private int directTargetIndex = -1;
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private boolean itsParameterNumberContext;
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boolean itsContainsCalls0;
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boolean itsContainsCalls1;
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}
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