yajl-js / src / callbacks.cc

/*
 * Copyright 2010, Nikhil Marathe <nsm.nikhil@gmail.com> All rights reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 * 
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 *       copyright notice, this list of conditions and the following
 *       disclaimer in the documentation and/or other materials provided
 *       with the distribution.
 *     * Neither the name of Nikhil Marathe nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#include <iostream>
#include <v8.h>
#include <node.h>
#include <yajl/yajl_parse.h>

#include "callbacks.h"
#include "yajl.h"

using namespace v8;
using namespace node;

#define INIT_CB( ctx )\
    HandleScope scope;\
    Handle *yh = static_cast<Handle *>( ctx )

namespace yajljs {
int OnNull( void *ctx )
{
    INIT_CB( ctx );
    yh->Emit( v8::String::New("null"), 0, NULL );
    return 1;
}

int OnBoolean( void *ctx, int b )
{
    INIT_CB( ctx );
    Local<Value> args[1] = { Integer::New( b ) };
    yh->Emit( v8::String::New("boolean"), 1, args );
    return 1;
}

int OnInteger( void *ctx, long b )
{
    INIT_CB( ctx );

    Local<Value> args[1] = { Integer::New( b ) };
    yh->Emit( String::New("integer"), 1, args );
    return 1;
}

int OnDouble( void *ctx, double b )
{
    INIT_CB( ctx );

    Local<Value> args[1] = { Number::New( b ) };
    yh->Emit( String::New("double"), 1, args );
    return 1;
}

int OnNumber( void *ctx, const char *numberVal, unsigned int numberLen )
{
    INIT_CB( ctx );

    Local<Value> args[1] = { String::New( numberVal, numberLen ) };
    yh->Emit( String::New("number"), 1, args );
    return 1;
}

int OnString( void *ctx, const unsigned char *stringVal, unsigned int stringLen )
{
    INIT_CB( ctx );
    Local<Value> args[1] = { String::New( (char *)stringVal, stringLen ) };
    yh->Emit( String::New("string"), 1, args );
    return 1;
}

int OnStartMap( void *ctx )
{
    INIT_CB( ctx );
    yh->Emit( String::New("startMap"), 0, NULL );
    return 1;
}

int OnMapKey( void *ctx, const unsigned char *key, unsigned int stringLen )
{
    INIT_CB( ctx );
    Local<Value> args[1] = { String::New( (char *)key, stringLen ) };
    yh->Emit( String::New("mapKey"), 1, args );
    return 1;
}

int OnEndMap( void *ctx )
{
    INIT_CB( ctx );
    yh->Emit( String::New("endMap"), 0, NULL );
    return 1;
}

int OnStartArray( void *ctx )
{
    INIT_CB( ctx );
    yh->Emit( String::New("startArray"), 0, NULL );
    return 1;
}

int OnEndArray( void *ctx )
{
    INIT_CB( ctx );
    yh->Emit( String::New("endArray"), 0, NULL );
    return 1;
}

void
FillCallbacks( Local<Object> obj, yajl_callbacks *cbs )
{
    Local<Array> props = obj->GetPropertyNames();
    for( int i = 0; i < props->Length(); i++ )
    {
        Local<Value> k = props->Get(Number::New(i));
        String::AsciiValue key(k->ToString());
        String::AsciiValue val( obj->Get( k->ToString() )->ToString() );
        std::cout << *key << ":" << *val << "\n";
    }
}
}
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