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Closure Compiler is a JavaScript optimizing compiler. It parses your JavaScript, analyzes it, removes dead code and rewrites and minimizes what's left. It also checks syntax, variable references, and types, and warns about common JavaScript pitfalls. It is used in many of Google's JavaScript apps, including Gmail, Google Web Search, Google Maps, and Google Docs.

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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
 *   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 com.google.javascript.rhino;

public class FunctionNode extends ScriptOrFnNode {

    private static final long serialVersionUID = 1L;

    public FunctionNode(String name) {
        super(Token.FUNCTION);
        functionName = name;
    }

    public FunctionNode(String name, int lineno, int charno) {
        super(Token.FUNCTION, lineno, charno);
        functionName = name;
    }

    public String getFunctionName() {
        return functionName;
    }

    public boolean requiresActivation() {
        return itsNeedsActivation;
    }

    public boolean getIgnoreDynamicScope() {
        return itsIgnoreDynamicScope;
    }

    /**
     * There are three types of functions that can be defined. The first
     * is a function statement. This is a function appearing as a top-level
     * statement (i.e., not nested inside some other statement) in either a
     * script or a function.
     *
     * The second is a function expression, which is a function appearing in
     * an expression except for the third type, which is...
     *
     * The third type is a function expression where the expression is the
     * top-level expression in an expression statement.
     *
     * The three types of functions have different treatment and must be
     * distinquished.
     */
    public static final int FUNCTION_STATEMENT            = 1;
    public static final int FUNCTION_EXPRESSION           = 2;
    public static final int FUNCTION_EXPRESSION_STATEMENT = 3;

    public int getFunctionType() {
        return itsFunctionType;
    }

    String functionName;
    boolean itsNeedsActivation;
    int itsFunctionType;
    boolean itsIgnoreDynamicScope;
}