nsinterfaceinfotoidl.js

从国外的站点上淘的个人财务管理系统．开源．

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * 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 mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 2002
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

/* The nsInterfaceInfoToIDL implementation.*/


/***************************************************************************/
// nsInterfaceInfoToIDL part...

const IInfo = new Components.Constructor("@mozilla.org/scriptableInterfaceInfo;1",
                                         "nsIScriptableInterfaceInfo",
                                         "init");

const nsIDataType = Components.interfaces.nsIDataType;
const nsISupports = Components.interfaces.nsISupports;

const PARAM_NAME_PREFIX = "arg";
const MISSING_INTERFACE = "@";  // flag to indicate missing interfaceinfo

// helpers...

/********************************************************/
// accumulate a string with a stream-ish abstraction

function Buffer() {
    this.buffer = "";
}

Buffer.prototype = {
    write : function(s)  {
        if(s)
            this.buffer += s;
    },

    writeln : function(s)  {
        if(s)
            this.buffer += s + "\n";
        else
            this.buffer += "\n";
    }
}

/********************************************************/

/**
* takes:   {xxx}
* returns: uuid(xxx)
*/
function formatID(str)
{
    return "uuid("+str.substring(1,str.length-1)+")";
}

function formatConstType(type)
{
    switch(type)
    {
        case nsIDataType.VTYPE_INT16:
            return "PRInt16";
        case nsIDataType.VTYPE_INT32:
            return "PRInt32";
        case nsIDataType.VTYPE_UINT16:
            return "PRUint16";
        case nsIDataType.VTYPE_UINT32:
            return "PRUint32";
        default:
            return "!!!! bad const type !!!";
    }
}

function formatTypeName(info, methodIndex, param, dimension)
{
    var type = info.getTypeForParam(methodIndex, param, dimension);

    switch(type.dataType)
    {
        case nsIDataType.VTYPE_INT8 :
            return "PRInt8";
        case nsIDataType.VTYPE_INT16:
            return "PRInt16";
        case nsIDataType.VTYPE_INT32:
            return "PRInt32";
        case nsIDataType.VTYPE_INT64:
            return "PRInt64";
        case nsIDataType.VTYPE_UINT8:
            return "PRUint8";
        case nsIDataType.VTYPE_UINT16:
            return "PRUint16";
        case nsIDataType.VTYPE_UINT32:
            return "PRUint32";
        case nsIDataType.VTYPE_UINT64:
            return "PRUint64";
        case nsIDataType.VTYPE_FLOAT:
            return "float";
        case nsIDataType.VTYPE_DOUBLE:
            return "double";
        case nsIDataType.VTYPE_BOOL:
            return "PRBool";
        case nsIDataType.VTYPE_CHAR:
            return "char";
        case nsIDataType.VTYPE_WCHAR:
            return "PRUnichar";
        case nsIDataType.VTYPE_VOID:
            if(type.isPointer)
                return "voidPtr";
            return "void";
        case nsIDataType.VTYPE_ID:
            // order matters here...
            if(type.isReference)
                return "nsIDRef";
            if(type.isPointer)
                return "nsIDPtr";
            return "nsID";
        case nsIDataType.VTYPE_DOMSTRING:
            return "DOMString";
        case nsIDataType.VTYPE_CHAR_STR:
            return "string";
        case nsIDataType.VTYPE_WCHAR_STR:
            return "wstring";
        case nsIDataType.VTYPE_INTERFACE:
            try  {
                return info.getInfoForParam(methodIndex, param).name;
            } catch(e) {
                return "/*!!! missing interface info, guessing!!!*/ nsISupports";
            }
        case nsIDataType.VTYPE_INTERFACE_IS:
            return "nsQIResult";
        case nsIDataType.VTYPE_ARRAY:
            return formatTypeName(info, methodIndex, param, dimension+1);
        case nsIDataType.VTYPE_STRING_SIZE_IS:
            return "string";
        case nsIDataType.VTYPE_WSTRING_SIZE_IS:
            return "wstring";
        case nsIDataType.VTYPE_UTF8STRING:
            return "AUTF8String";
        case nsIDataType.VTYPE_CSTRING:
            return "ACString";
        case nsIDataType.VTYPE_ASTRING:
            return "AString";
        default:
            return "!!!! bad data type !!!";
    }
}

function formatBracketForParam(info, methodIndex, param)
{
    var type = param.type;
    var str = "[";
    var found = 0;
    var size_is_ArgNum;
    var length_is_ArgNum;

    if(param.isRetval)
    {
        if(found++)
            str += ", ";
        str += "retval"
    }

    if(param.isShared)
    {
        if(found++)
            str += ", ";
        str += "shared"
    }

    if(type.isArray)
    {
        if(found++)
            str += ", ";
        str += "array"
    }

    if(type.dataType == nsIDataType.VTYPE_INTERFACE_IS)
    {
        if(found++)
            str += ", ";
        str += "iid_is("+
                 PARAM_NAME_PREFIX +
                 info.getInterfaceIsArgNumberForParam(methodIndex, param) + ")";
    }

    if(type.isArray ||
       type.dataType == nsIDataType.VTYPE_STRING_SIZE_IS ||
       type.dataType == nsIDataType.VTYPE_WSTRING_SIZE_IS)
    {
        if(found++)
            str += ", ";

        size_is_ArgNum =
            info.getSizeIsArgNumberForParam(methodIndex, param, 0);

        str += "size_is("+ PARAM_NAME_PREFIX + size_is_ArgNum + ")";

        length_is_ArgNum =
            info.getLengthIsArgNumberForParam(methodIndex, param, 0);

        if(length_is_ArgNum != size_is_ArgNum)
        {
            str += ", ";
            str += "length_is("+ PARAM_NAME_PREFIX + length_is_ArgNum + ")";
        }
    }

    if(!found)
        return "";
    str += "] ";
    return str
}

function doInterface(out, iid)
{
    var i, k, t, m, m2, c, p, readonly, bracketed, paramCount, retvalTypeName;

    var info = new IInfo(iid);
    var parent = info.parent;

    var constBaseIndex = parent ? parent.constantCount : 0;
    var constTotalCount =  info.constantCount;
    var constLocalCount = constTotalCount - constBaseIndex;

    var methodBaseIndex = parent ? parent.methodCount : 0;
    var methodTotalCount =  info.methodCount;
    var methodLocalCount = methodTotalCount - methodBaseIndex;


    // maybe recurring to emit parent declarations is not a good idea...
//    if(parent)
//        doInterface(parent.interfaceID);

    out.writeln();

    // comment out nsISupports
//    if(iid.equals(nsISupports))
//        out.writeln("/*\n");

    out.writeln("[" + (info.isScriptable ? "scriptable, " : "") +
                formatID(info.interfaceID.number) + "]");

    out.writeln("interface "+ info.name +
                   (parent ? (" : "+parent.name) : "") + " {");

    if(constLocalCount)
    {
        for(i = constBaseIndex; i < constTotalCount; i++)
        {
            c = info.getConstant(i);
            out.writeln("  const " + formatConstType(c.type.dataType) + " " +
                        c.name + " = " + c.value + ";");
        }
    }

    if(constLocalCount && methodLocalCount)
        out.writeln();

    if(methodLocalCount)
    {
        for(i = methodBaseIndex; i < methodTotalCount; i++)
        {
            m = info.getMethodInfo(i);

            if(m.isNotXPCOM)