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+/* ***** 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.*;
+
+final class OptFunctionNode
+{
+ OptFunctionNode(FunctionNode fnode)
+ {
+ this.fnode = fnode;
+ fnode.setCompilerData(this);
+ }
+
+ static OptFunctionNode get(ScriptOrFnNode scriptOrFn, int i)
+ {
+ FunctionNode fnode = scriptOrFn.getFunctionNode(i);
+ return (OptFunctionNode)fnode.getCompilerData();
+ }
+
+ static OptFunctionNode get(ScriptOrFnNode 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;
+}