mirror of
https://github.com/mongodb/mongo.git
synced 2024-12-01 09:32:32 +01:00
1108 lines
36 KiB
C++
1108 lines
36 KiB
C++
// engine_spidermonkey.cpp
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#include "stdafx.h"
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#include "engine_spidermonkey.h"
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#include "../client/dbclient.h"
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namespace mongo {
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boost::thread_specific_ptr<SMScope> currentScope( dontDeleteScope );
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#define GETHOLDER(x,o) ((BSONHolder*)JS_GetPrivate( x , o ))
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class BSONFieldIterator;
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class BSONHolder {
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public:
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BSONHolder( BSONObj obj ){
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_obj = obj.getOwned();
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_inResolve = false;
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_modified = false;
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_magic = 17;
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}
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void check(){
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uassert( "holder magic value is wrong" , _magic == 17 );
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}
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BSONFieldIterator * it();
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BSONObj _obj;
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bool _inResolve;
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char _magic;
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list<string> _extra;
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bool _modified;
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};
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class BSONFieldIterator {
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public:
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BSONFieldIterator( BSONHolder * holder ){
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BSONObjIterator it( holder->_obj );
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while ( it.more() ){
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BSONElement e = it.next();
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if ( e.eoo() )
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break;
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_names.push_back( e.fieldName() );
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}
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_names.merge( holder->_extra );
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_it = _names.begin();
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}
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bool more(){
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return _it != _names.end();
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}
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string next(){
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string s = *_it;
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_it++;
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return s;
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}
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private:
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list<string> _names;
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list<string>::iterator _it;
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};
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BSONFieldIterator * BSONHolder::it(){
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return new BSONFieldIterator( this );
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}
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class Convertor : boost::noncopyable {
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public:
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Convertor( JSContext * cx ){
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_context = cx;
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}
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string toString( JSString * so ){
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jschar * s = JS_GetStringChars( so );
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size_t srclen = JS_GetStringLength( so );
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if( srclen == 0 )
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return "";
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size_t len = srclen * 6; // we only need *3, but see note on len below
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char * dst = (char*)malloc( len );
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len /= 2;
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// doc re weird JS_EncodeCharacters api claims len expected in 16bit
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// units, but experiments suggest 8bit units expected. We allocate
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// enough memory that either will work.
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assert( JS_EncodeCharacters( _context , s , srclen , dst , &len) );
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string ss( dst , len );
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free( dst );
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if ( !JS_CStringsAreUTF8() )
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for( string::const_iterator i = ss.begin(); i != ss.end(); ++i )
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uassert( "non ascii character detected", (unsigned char)(*i) <= 127 );
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return ss;
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}
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string toString( jsval v ){
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return toString( JS_ValueToString( _context , v ) );
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}
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double toNumber( jsval v ){
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double d;
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uassert( "not a number" , JS_ValueToNumber( _context , v , &d ) );
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return d;
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}
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bool toBoolean( jsval v ){
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JSBool b;
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assert( JS_ValueToBoolean( _context, v , &b ) );
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return b;
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}
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OID toOID( jsval v ){
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JSContext * cx = _context;
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assert( JSVAL_IS_OID( v ) );
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JSObject * o = JSVAL_TO_OBJECT( v );
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OID oid;
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oid.init( getString( o , "str" ) );
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return oid;
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}
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BSONObj toObject( JSObject * o ){
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if ( ! o )
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return BSONObj();
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if ( JS_InstanceOf( _context , o , &bson_ro_class , 0 ) ){
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return GETHOLDER( _context , o )->_obj.getOwned();
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}
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BSONObj orig;
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if ( JS_InstanceOf( _context , o , &bson_class , 0 ) ){
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BSONHolder * holder = GETHOLDER(_context,o);
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if ( ! holder->_modified )
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return holder->_obj;
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orig = holder->_obj;
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}
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BSONObjBuilder b;
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jsval theid = getProperty( o , "_id" );
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if ( ! JSVAL_IS_VOID( theid ) ){
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append( b , "_id" , theid );
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}
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JSIdArray * properties = JS_Enumerate( _context , o );
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assert( properties );
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for ( jsint i=0; i<properties->length; i++ ){
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jsid id = properties->vector[i];
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jsval nameval;
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assert( JS_IdToValue( _context ,id , &nameval ) );
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string name = toString( nameval );
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if ( name == "_id" )
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continue;
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append( b , name , getProperty( o , name.c_str() ) , orig[name].type() );
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}
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JS_DestroyIdArray( _context , properties );
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return b.obj();
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}
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BSONObj toObject( jsval v ){
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if ( JSVAL_IS_NULL( v ) ||
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JSVAL_IS_VOID( v ) )
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return BSONObj();
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uassert( "not an object" , JSVAL_IS_OBJECT( v ) );
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return toObject( JSVAL_TO_OBJECT( v ) );
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}
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string getFunctionCode( JSFunction * func ){
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return toString( JS_DecompileFunction( _context , func , 0 ) );
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}
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string getFunctionCode( jsval v ){
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uassert( "not a function" , JS_TypeOfValue( _context , v ) == JSTYPE_FUNCTION );
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return getFunctionCode( JS_ValueToFunction( _context , v ) );
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}
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void append( BSONObjBuilder& b , string name , jsval val , BSONType oldType = EOO ){
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//cout << "name: " << name << "\t" << typeString( val ) << " oldType: " << oldType << endl;
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switch ( JS_TypeOfValue( _context , val ) ){
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case JSTYPE_VOID: b.appendUndefined( name.c_str() ); break;
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case JSTYPE_NULL: b.appendNull( name.c_str() ); break;
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case JSTYPE_NUMBER: {
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double d = toNumber( val );
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if ( oldType == NumberInt && ((int)d) == d )
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b.append( name.c_str() , (int)d );
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else
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b.append( name.c_str() , d );
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break;
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}
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case JSTYPE_STRING: b.append( name.c_str() , toString( val ) ); break;
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case JSTYPE_BOOLEAN: b.appendBool( name.c_str() , toBoolean( val ) ); break;
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case JSTYPE_OBJECT: {
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JSObject * o = JSVAL_TO_OBJECT( val );
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if ( ! o || o == JSVAL_NULL ){
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b.appendNull( name.c_str() );
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}
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else if ( ! appendSpecialDBObject( this , b , name , o ) ){
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BSONObj sub = toObject( o );
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if ( JS_IsArrayObject( _context , o ) ){
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b.appendArray( name.c_str() , sub );
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}
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else {
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b.append( name.c_str() , sub );
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}
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}
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break;
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}
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case JSTYPE_FUNCTION: {
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string s = toString(val);
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if ( s[0] == '/' ){
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s = s.substr(1);
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string::size_type end = s.rfind( '/' );
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b.appendRegex( name.c_str() , s.substr( 0 , end ).c_str() , s.substr( end + 1 ).c_str() );
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}
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else {
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b.appendCode( name.c_str() , getFunctionCode( val ).c_str() );
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}
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break;
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}
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default: uassert( (string)"can't append field. name:" + name + " type: " + typeString( val ) , 0 );
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}
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}
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// ---------- to spider monkey ---------
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bool hasFunctionIdentifier( const string& code ){
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if ( code.size() < 9 || code.find( "function" ) != 0 )
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return false;
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return code[8] == ' ' || code[8] == '(';
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}
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bool isSimpleStatement( const string& code ){
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if ( code.find( "return" ) != string::npos )
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return false;
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if ( code.find( ";" ) != string::npos &&
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code.find( ";" ) != code.rfind( ";" ) )
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return false;
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if ( code.find( "for(" ) != string::npos ||
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code.find( "for (" ) != string::npos ||
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code.find( "while (" ) != string::npos ||
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code.find( "while(" ) != string::npos )
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return false;
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return true;
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}
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void addRoot( JSFunction * f );
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JSFunction * compileFunction( const char * code, JSObject * assoc = 0 ){
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JSFunction * f = _compileFunction( code , assoc );
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addRoot( f );
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return f;
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}
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JSFunction * _compileFunction( const char * code, JSObject * assoc ){
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if ( ! hasFunctionIdentifier( code ) ){
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string s = code;
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if ( isSimpleStatement( s ) ){
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s = "return " + s;
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}
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return JS_CompileFunction( _context , assoc , "anonymous" , 0 , 0 , s.c_str() , strlen( s.c_str() ) , "nofile_a" , 0 );
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}
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// TODO: there must be a way in spider monkey to do this - this is a total hack
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string s = "return ";
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s += code;
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s += ";";
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JSFunction * func = JS_CompileFunction( _context , assoc , "anonymous" , 0 , 0 , s.c_str() , strlen( s.c_str() ) , "nofile_b" , 0 );
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if ( ! func ){
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cerr << "compile for hack failed" << endl;
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return 0;
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}
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jsval ret;
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if ( ! JS_CallFunction( _context , 0 , func , 0 , 0 , &ret ) ){
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cerr << "call function for hack failed" << endl;
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return 0;
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}
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addRoot( func );
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uassert( "return for compile hack failed" , JS_TypeOfValue( _context , ret ) == JSTYPE_FUNCTION );
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return JS_ValueToFunction( _context , ret );
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}
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jsval toval( double d ){
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jsval val;
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assert( JS_NewNumberValue( _context, d , &val ) );
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return val;
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}
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jsval toval( const char * c ){
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JSString * s = JS_NewStringCopyZ( _context , c );
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assert( s );
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return STRING_TO_JSVAL( s );
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}
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JSObject * toJSObject( const BSONObj * obj , bool readOnly=false ){
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JSObject * o = JS_NewObject( _context , readOnly ? &bson_ro_class : &bson_class , NULL, NULL);
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assert( o );
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assert( JS_SetPrivate( _context , o , (void*)(new BSONHolder( obj->getOwned() ) ) ) );
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return o;
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}
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jsval toval( const BSONObj* obj , bool readOnly=false ){
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JSObject * o = toJSObject( obj , readOnly );
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return OBJECT_TO_JSVAL( o );
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}
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jsval toval( const BSONElement& e ){
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switch( e.type() ){
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case EOO:
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case jstNULL:
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case Undefined:
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return JSVAL_NULL;
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case NumberDouble:
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case NumberInt:
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return toval( e.number() );
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case String:
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return toval( e.valuestr() );
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case Bool:
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return e.boolean() ? JSVAL_TRUE : JSVAL_FALSE;
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case Object:{
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BSONObj embed = e.embeddedObject().getOwned();
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return toval( &embed );
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}
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case Array:{
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BSONObj embed = e.embeddedObject().getOwned();
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if ( embed.isEmpty() ){
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return OBJECT_TO_JSVAL( JS_NewArrayObject( _context , 0 , 0 ) );
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}
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int n = embed.nFields();
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assert( n > 0 );
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JSObject * array = JS_NewArrayObject( _context , embed.nFields() , 0 );
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assert( array );
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jsval myarray = OBJECT_TO_JSVAL( array );
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for ( int i=0; i<n; i++ ){
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jsval v = toval( embed[i] );
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assert( JS_SetElement( _context , array , i , &v ) );
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}
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return myarray;
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}
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case jstOID:{
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OID oid = e.__oid();
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JSObject * o = JS_NewObject( _context , &object_id_class , 0 , 0 );
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setProperty( o , "str" , toval( oid.str().c_str() ) );
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return OBJECT_TO_JSVAL( o );
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}
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case RegEx:{
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const char * flags = e.regexFlags();
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uintN flagNumber = 0;
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while ( *flags ){
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switch ( *flags ){
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case 'g': flagNumber |= JSREG_GLOB; break;
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case 'i': flagNumber |= JSREG_FOLD; break;
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case 'm': flagNumber |= JSREG_MULTILINE; break;
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//case 'y': flagNumber |= JSREG_STICKY; break;
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default: uassert( "unknown regex flag" , 0 );
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}
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flags++;
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}
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JSObject * r = JS_NewRegExpObject( _context , (char*)e.regex() , strlen( e.regex() ) , flagNumber );
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assert( r );
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return OBJECT_TO_JSVAL( r );
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}
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case Code:{
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JSFunction * func = compileFunction( e.valuestr() );
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return OBJECT_TO_JSVAL( JS_GetFunctionObject( func ) );
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}
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case CodeWScope:{
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JSFunction * func = compileFunction( e.codeWScopeCode() );
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BSONObj extraScope = e.codeWScopeObject();
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if ( ! extraScope.isEmpty() ){
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log() << "warning: CodeWScope doesn't transfer to db.eval" << endl;
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}
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return OBJECT_TO_JSVAL( JS_GetFunctionObject( func ) );
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}
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case Date:
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return OBJECT_TO_JSVAL( js_NewDateObjectMsec( _context , (jsdouble) e.date() ) );
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case MinKey:
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return OBJECT_TO_JSVAL( JS_NewObject( _context , &minkey_class , 0 , 0 ) );
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case MaxKey:
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return OBJECT_TO_JSVAL( JS_NewObject( _context , &maxkey_class , 0 , 0 ) );
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case Timestamp: {
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JSObject * o = JS_NewObject( _context , ×tamp_class , 0 , 0 );
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setProperty( o , "t" , toval( (double)(e.timestampTime()) ) );
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setProperty( o , "i" , toval( (double)(e.timestampInc()) ) );
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return OBJECT_TO_JSVAL( o );
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}
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case DBRef: {
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JSObject * o = JS_NewObject( _context , &dbref_class , 0 , 0 );
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setProperty( o , "ns" , toval( e.dbrefNS() ) );
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JSObject * oid = JS_NewObject( _context , &object_id_class , 0 , 0 );
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setProperty( oid , "str" , toval( e.dbrefOID().str().c_str() ) );
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setProperty( o , "id" , OBJECT_TO_JSVAL( oid ) );
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return OBJECT_TO_JSVAL( o );
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}
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default:
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log() << "toval can't handle type: " << (int)(e.type()) << endl;
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}
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uassert( "not done: toval" , 0 );
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return 0;
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}
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// ------- object helpers ------
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JSObject * getJSObject( JSObject * o , const char * name ){
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jsval v;
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assert( JS_GetProperty( _context , o , name , &v ) );
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return JSVAL_TO_OBJECT( v );
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}
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JSObject * getGlobalObject( const char * name ){
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return getJSObject( JS_GetGlobalObject( _context ) , name );
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}
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JSObject * getGlobalPrototype( const char * name ){
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return getJSObject( getGlobalObject( name ) , "prototype" );
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}
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bool hasProperty( JSObject * o , const char * name ){
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JSBool res;
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assert( JS_HasProperty( _context , o , name , & res ) );
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return res;
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}
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jsval getProperty( JSObject * o , const char * field ){
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uassert( "object passed to getPropery is null" , o );
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jsval v;
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assert( JS_GetProperty( _context , o , field , &v ) );
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return v;
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}
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void setProperty( JSObject * o , const char * field , jsval v ){
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assert( JS_SetProperty( _context , o , field , &v ) );
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}
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string typeString( jsval v ){
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JSType t = JS_TypeOfValue( _context , v );
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return JS_GetTypeName( _context , t );
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}
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bool getBoolean( JSObject * o , const char * field ){
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return toBoolean( getProperty( o , field ) );
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}
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double getNumber( JSObject * o , const char * field ){
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return toNumber( getProperty( o , field ) );
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}
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string getString( JSObject * o , const char * field ){
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return toString( getProperty( o , field ) );
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}
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JSContext * _context;
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};
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void bson_finalize( JSContext * cx , JSObject * obj ){
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BSONHolder * o = GETHOLDER( cx , obj );
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if ( o ){
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delete o;
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assert( JS_SetPrivate( cx , obj , 0 ) );
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}
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}
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JSBool bson_enumerate( JSContext *cx, JSObject *obj, JSIterateOp enum_op, jsval *statep, jsid *idp ){
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if ( enum_op == JSENUMERATE_INIT ){
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BSONFieldIterator * it = GETHOLDER( cx , obj )->it();
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*statep = PRIVATE_TO_JSVAL( it );
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if ( idp )
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*idp = JSVAL_ZERO;
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return JS_TRUE;
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}
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BSONFieldIterator * it = (BSONFieldIterator*)JSVAL_TO_PRIVATE( *statep );
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|
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if ( enum_op == JSENUMERATE_NEXT ){
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if ( it->more() ){
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string name = it->next();
|
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Convertor c(cx);
|
|
assert( JS_ValueToId( cx , c.toval( name.c_str() ) , idp ) );
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}
|
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else {
|
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delete it;
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*statep = 0;
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}
|
|
return JS_TRUE;
|
|
}
|
|
|
|
if ( enum_op == JSENUMERATE_DESTROY ){
|
|
if ( it )
|
|
delete it;
|
|
return JS_TRUE;
|
|
}
|
|
|
|
uassert( "don't know what to do with this op" , 0 );
|
|
return JS_FALSE;
|
|
}
|
|
|
|
JSBool noaccess( JSContext *cx, JSObject *obj, jsval idval, jsval *vp){
|
|
BSONHolder * holder = GETHOLDER( cx , obj );
|
|
if ( holder->_inResolve )
|
|
return JS_TRUE;
|
|
JS_ReportError( cx , "doing write op on read only operation" );
|
|
return JS_FALSE;
|
|
}
|
|
|
|
JSClass bson_ro_class = {
|
|
"bson_ro_object" , JSCLASS_HAS_PRIVATE | JSCLASS_NEW_RESOLVE | JSCLASS_NEW_ENUMERATE ,
|
|
noaccess, noaccess, JS_PropertyStub, noaccess,
|
|
(JSEnumerateOp)bson_enumerate, (JSResolveOp)(&resolveBSONField) , JS_ConvertStub, bson_finalize ,
|
|
JSCLASS_NO_OPTIONAL_MEMBERS
|
|
};
|
|
|
|
JSBool bson_add_prop( JSContext *cx, JSObject *obj, jsval idval, jsval *vp){
|
|
BSONHolder * holder = GETHOLDER( cx , obj );
|
|
if ( ! holder->_inResolve ){
|
|
Convertor c(cx);
|
|
holder->_extra.push_back( c.toString( idval ) );
|
|
holder->_modified = true;
|
|
}
|
|
return JS_TRUE;
|
|
}
|
|
|
|
|
|
JSBool mark_modified( JSContext *cx, JSObject *obj, jsval idval, jsval *vp){
|
|
BSONHolder * holder = GETHOLDER( cx , obj );
|
|
if ( holder->_inResolve )
|
|
return JS_TRUE;
|
|
holder->_modified = true;
|
|
return JS_TRUE;
|
|
}
|
|
|
|
JSClass bson_class = {
|
|
"bson_object" , JSCLASS_HAS_PRIVATE | JSCLASS_NEW_RESOLVE | JSCLASS_NEW_ENUMERATE ,
|
|
bson_add_prop, mark_modified, JS_PropertyStub, mark_modified,
|
|
(JSEnumerateOp)bson_enumerate, (JSResolveOp)(&resolveBSONField) , JS_ConvertStub, bson_finalize ,
|
|
JSCLASS_NO_OPTIONAL_MEMBERS
|
|
};
|
|
|
|
static JSClass global_class = {
|
|
"global", JSCLASS_GLOBAL_FLAGS,
|
|
JS_PropertyStub, JS_PropertyStub, JS_PropertyStub, JS_PropertyStub,
|
|
JS_EnumerateStub, JS_ResolveStub, JS_ConvertStub, JS_FinalizeStub,
|
|
JSCLASS_NO_OPTIONAL_MEMBERS
|
|
};
|
|
|
|
// --- global helpers ---
|
|
|
|
JSBool native_print( JSContext * cx , JSObject * obj , uintN argc, jsval *argv, jsval *rval ){
|
|
Convertor c( cx );
|
|
for ( uintN i=0; i<argc; i++ ){
|
|
if ( i > 0 )
|
|
cout << " ";
|
|
cout << c.toString( argv[i] );
|
|
}
|
|
cout << endl;
|
|
return JS_TRUE;
|
|
}
|
|
|
|
JSBool native_helper( JSContext *cx , JSObject *obj , uintN argc, jsval *argv , jsval *rval ){
|
|
Convertor c(cx);
|
|
uassert( "native_helper needs at least 1 arg" , argc >= 1 );
|
|
|
|
NativeFunction func = (NativeFunction)JSVAL_TO_PRIVATE( argv[0] );
|
|
|
|
BSONObjBuilder args;
|
|
for ( uintN i=1; i<argc; i++ ){
|
|
c.append( args , args.numStr( i ) , argv[i] );
|
|
}
|
|
|
|
BSONObj out = func( args.obj() );
|
|
|
|
if ( out.isEmpty() ){
|
|
*rval = JSVAL_VOID;
|
|
}
|
|
else {
|
|
*rval = c.toval( out.firstElement() );
|
|
}
|
|
|
|
return JS_TRUE;
|
|
}
|
|
|
|
JSBool native_load( JSContext *cx , JSObject *obj , uintN argc, jsval *argv , jsval *rval );
|
|
|
|
JSBool native_gc( JSContext *cx , JSObject *obj , uintN argc, jsval *argv , jsval *rval ){
|
|
JS_GC( cx );
|
|
return JS_TRUE;
|
|
}
|
|
|
|
JSFunctionSpec globalHelpers[] = {
|
|
{ "print" , &native_print , 0 , 0 , 0 } ,
|
|
{ "nativeHelper" , &native_helper , 1 , 0 , 0 } ,
|
|
{ "load" , &native_load , 1 , 0 , 0 } ,
|
|
{ "gc" , &native_gc , 1 , 0 , 0 } ,
|
|
|
|
{ 0 , 0 , 0 , 0 , 0 }
|
|
};
|
|
|
|
// ----END global helpers ----
|
|
|
|
|
|
JSBool resolveBSONField( JSContext *cx, JSObject *obj, jsval id, uintN flags, JSObject **objp ){
|
|
assert( JS_EnterLocalRootScope( cx ) );
|
|
Convertor c( cx );
|
|
|
|
BSONHolder * holder = GETHOLDER( cx , obj );
|
|
holder->check();
|
|
|
|
string s = c.toString( id );
|
|
|
|
BSONElement e = holder->_obj[ s.c_str() ];
|
|
|
|
if ( e.type() == EOO ){
|
|
*objp = 0;
|
|
JS_LeaveLocalRootScope( cx );
|
|
return JS_TRUE;
|
|
}
|
|
|
|
jsval val = c.toval( e );
|
|
|
|
assert( ! holder->_inResolve );
|
|
holder->_inResolve = true;
|
|
assert( JS_SetProperty( cx , obj , s.c_str() , &val ) );
|
|
holder->_inResolve = false;
|
|
|
|
*objp = obj;
|
|
JS_LeaveLocalRootScope( cx );
|
|
return JS_TRUE;
|
|
}
|
|
|
|
|
|
class SMScope;
|
|
|
|
class SMEngine : public ScriptEngine {
|
|
public:
|
|
|
|
SMEngine(){
|
|
_runtime = JS_NewRuntime(8L * 1024L * 1024L);
|
|
uassert( "JS_NewRuntime failed" , _runtime );
|
|
if ( ! utf8Ok() ){
|
|
cerr << "*** warning: spider monkey build without utf8 support. consider rebuilding with utf8 support" << endl;
|
|
}
|
|
}
|
|
|
|
~SMEngine(){
|
|
JS_DestroyRuntime( _runtime );
|
|
JS_ShutDown();
|
|
}
|
|
|
|
Scope * createScope();
|
|
|
|
void runTest();
|
|
|
|
virtual bool utf8Ok() const { return JS_CStringsAreUTF8(); }
|
|
|
|
private:
|
|
JSRuntime * _runtime;
|
|
friend class SMScope;
|
|
};
|
|
|
|
SMEngine * globalSMEngine;
|
|
|
|
|
|
void ScriptEngine::setup(){
|
|
globalSMEngine = new SMEngine();
|
|
globalScriptEngine = globalSMEngine;
|
|
}
|
|
|
|
|
|
// ------ special helpers -------
|
|
|
|
JSBool object_keyset(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval){
|
|
|
|
JSIdArray * properties = JS_Enumerate( cx , obj );
|
|
assert( properties );
|
|
|
|
JSObject * array = JS_NewArrayObject( cx , properties->length , 0 );
|
|
assert( array );
|
|
|
|
for ( jsint i=0; i<properties->length; i++ ){
|
|
jsid id = properties->vector[i];
|
|
jsval idval;
|
|
assert( JS_IdToValue( cx , id , &idval ) );
|
|
assert( JS_SetElement( cx , array , i , &idval ) );
|
|
}
|
|
|
|
*rval = OBJECT_TO_JSVAL( array );
|
|
return JS_TRUE;
|
|
}
|
|
|
|
// ------ scope ------
|
|
|
|
|
|
JSBool no_gc(JSContext *cx, JSGCStatus status){
|
|
return JS_FALSE;
|
|
}
|
|
|
|
class SMScope : public Scope {
|
|
public:
|
|
SMScope(){
|
|
_context = JS_NewContext( globalSMEngine->_runtime , 8192 );
|
|
_convertor = new Convertor( _context );
|
|
massert( "JS_NewContext failed" , _context );
|
|
|
|
JS_SetOptions( _context , JSOPTION_VAROBJFIX);
|
|
//JS_SetVersion( _context , JSVERSION_LATEST); TODO
|
|
JS_SetErrorReporter( _context , errorReporter );
|
|
|
|
_global = JS_NewObject( _context , &global_class, NULL, NULL);
|
|
massert( "JS_NewObject failed for global" , _global );
|
|
massert( "js init failed" , JS_InitStandardClasses( _context , _global ) );
|
|
|
|
JS_DefineFunctions( _context , _global , globalHelpers );
|
|
|
|
// install my special helpers
|
|
|
|
assert( JS_DefineFunction( _context , _convertor->getGlobalPrototype( "Object" ) ,
|
|
"keySet" , object_keyset , 0 , JSPROP_READONLY ) );
|
|
|
|
_this = 0;
|
|
//JS_SetGCCallback( _context , no_gc ); // this is useful for seeing if something is a gc problem
|
|
}
|
|
|
|
~SMScope(){
|
|
uassert( "deleted SMScope twice?" , _convertor );
|
|
|
|
for ( list<void*>::iterator i=_roots.begin(); i != _roots.end(); i++ ){
|
|
JS_RemoveRoot( _context , *i );
|
|
}
|
|
|
|
if ( _convertor ){
|
|
delete _convertor;
|
|
_convertor = 0;
|
|
}
|
|
|
|
if ( _context ){
|
|
JS_DestroyContext( _context );
|
|
_context = 0;
|
|
}
|
|
}
|
|
|
|
void reset(){
|
|
massert( "SMScope::reset() not implemented yet" , 0 );
|
|
}
|
|
|
|
void addRoot( void * root , const char * name ){
|
|
JS_AddNamedRoot( _context , root , name );
|
|
_roots.push_back( root );
|
|
}
|
|
|
|
void init( BSONObj * data ){
|
|
if ( ! data )
|
|
return;
|
|
|
|
BSONObjIterator i( *data );
|
|
while ( i.more() ){
|
|
BSONElement e = i.next();
|
|
if ( e.eoo() )
|
|
break;
|
|
|
|
_convertor->setProperty( _global , e.fieldName() , _convertor->toval( e ) );
|
|
}
|
|
|
|
}
|
|
|
|
void externalSetup(){
|
|
initMongoJS( this , _context , _global , false );
|
|
}
|
|
|
|
void localConnect( const char * dbName ){
|
|
initMongoJS( this , _context , _global , true );
|
|
|
|
exec( "_mongo = new Mongo();" );
|
|
exec( ((string)"db = _mongo.getDB( \"" + dbName + "\" ); ").c_str() );
|
|
}
|
|
|
|
// ----- getters ------
|
|
double getNumber( const char *field ){
|
|
jsval val;
|
|
assert( JS_GetProperty( _context , _global , field , &val ) );
|
|
return _convertor->toNumber( val );
|
|
}
|
|
|
|
string getString( const char *field ){
|
|
jsval val;
|
|
assert( JS_GetProperty( _context , _global , field , &val ) );
|
|
JSString * s = JS_ValueToString( _context , val );
|
|
return _convertor->toString( s );
|
|
}
|
|
|
|
bool getBoolean( const char *field ){
|
|
return _convertor->getBoolean( _global , field );
|
|
}
|
|
|
|
BSONObj getObject( const char *field ){
|
|
return _convertor->toObject( _convertor->getProperty( _global , field ) );
|
|
}
|
|
|
|
JSObject * getJSObject( const char * field ){
|
|
return _convertor->getJSObject( _global , field );
|
|
}
|
|
|
|
int type( const char *field ){
|
|
jsval val;
|
|
assert( JS_GetProperty( _context , _global , field , &val ) );
|
|
|
|
switch ( JS_TypeOfValue( _context , val ) ){
|
|
case JSTYPE_VOID: return Undefined;
|
|
case JSTYPE_NULL: return jstNULL;
|
|
case JSTYPE_OBJECT: return Object;
|
|
case JSTYPE_FUNCTION: return Code;
|
|
case JSTYPE_STRING: return String;
|
|
case JSTYPE_NUMBER: return NumberDouble;
|
|
case JSTYPE_BOOLEAN: return Bool;
|
|
default:
|
|
uassert( "unknown type" , 0 );
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// ----- setters ------
|
|
|
|
void setNumber( const char *field , double val ){
|
|
jsval v = _convertor->toval( val );
|
|
assert( JS_SetProperty( _context , _global , field , &v ) );
|
|
}
|
|
|
|
void setString( const char *field , const char * val ){
|
|
jsval v = _convertor->toval( val );
|
|
assert( JS_SetProperty( _context , _global , field , &v ) );
|
|
}
|
|
|
|
void setObject( const char *field , const BSONObj& obj , bool readOnly ){
|
|
jsval v = _convertor->toval( &obj , readOnly );
|
|
JS_SetProperty( _context , _global , field , &v );
|
|
}
|
|
|
|
void setBoolean( const char *field , bool val ){
|
|
jsval v = BOOLEAN_TO_JSVAL( val );
|
|
assert( JS_SetProperty( _context , _global , field , &v ) );
|
|
}
|
|
|
|
void setThis( const BSONObj * obj ){
|
|
_this = _convertor->toJSObject( obj );
|
|
}
|
|
|
|
// ---- functions -----
|
|
|
|
ScriptingFunction createFunction( const char * code ){
|
|
precall();
|
|
return (ScriptingFunction)_convertor->compileFunction( code );
|
|
}
|
|
|
|
struct TimeoutSpec {
|
|
boost::posix_time::ptime start;
|
|
boost::posix_time::time_duration timeout;
|
|
int count;
|
|
};
|
|
|
|
static JSBool checkTimeout( JSContext *cx, JSScript *script ) {
|
|
TimeoutSpec &spec = *(TimeoutSpec *)( JS_GetContextPrivate( cx ) );
|
|
if ( ++spec.count % 1000 != 0 )
|
|
return JS_TRUE;
|
|
boost::posix_time::time_duration elapsed = ( boost::posix_time::microsec_clock::local_time() - spec.start );
|
|
if ( elapsed < spec.timeout ) {
|
|
return JS_TRUE;
|
|
}
|
|
JS_ReportError( cx, "Timeout exceeded" );
|
|
return JS_FALSE;
|
|
}
|
|
|
|
void installCheckTimeout( int timeoutMs ) {
|
|
if ( timeoutMs > 0 ) {
|
|
TimeoutSpec *spec = new TimeoutSpec;
|
|
spec->timeout = boost::posix_time::millisec( timeoutMs );
|
|
spec->start = boost::posix_time::microsec_clock::local_time();
|
|
spec->count = 0;
|
|
JS_SetContextPrivate( _context, (void*)spec );
|
|
JS_SetBranchCallback( _context, checkTimeout );
|
|
}
|
|
}
|
|
|
|
void uninstallCheckTimeout( int timeoutMs ) {
|
|
if ( timeoutMs > 0 ) {
|
|
JS_SetBranchCallback( _context, 0 );
|
|
delete (TimeoutSpec *)JS_GetContextPrivate( _context );
|
|
JS_SetContextPrivate( _context, 0 );
|
|
}
|
|
}
|
|
|
|
void precall(){
|
|
_error = "";
|
|
currentScope.reset( this );
|
|
}
|
|
|
|
bool exec( const string& code , const string& name = "(anon)" , bool printResult = false , bool reportError = true , bool assertOnError = true, int timeoutMs = 0 ){
|
|
precall();
|
|
|
|
jsval ret = JSVAL_VOID;
|
|
|
|
installCheckTimeout( timeoutMs );
|
|
JSBool worked = JS_EvaluateScript( _context , _global , code.c_str() , strlen( code.c_str() ) , name.c_str() , 0 , &ret );
|
|
uninstallCheckTimeout( timeoutMs );
|
|
|
|
if ( assertOnError )
|
|
uassert( name + " exec failed" , worked );
|
|
|
|
if ( reportError && ! _error.empty() ){
|
|
// cout << "exec error: " << _error << endl;
|
|
// already printed in reportError, so... TODO
|
|
}
|
|
|
|
if ( worked && printResult && ! JSVAL_IS_VOID( ret ) )
|
|
cout << _convertor->toString( ret ) << endl;
|
|
|
|
return worked;
|
|
}
|
|
|
|
int invoke( JSFunction * func , const BSONObj& args, int timeoutMs ){
|
|
precall();
|
|
jsval rval;
|
|
|
|
int nargs = args.nFields();
|
|
auto_ptr<jsval> smargsPtr( new jsval[nargs] );
|
|
jsval* smargs = smargsPtr.get();
|
|
|
|
BSONObjIterator it( args );
|
|
for ( int i=0; i<nargs; i++ )
|
|
smargs[i] = _convertor->toval( it.next() );
|
|
|
|
setObject( "args" , args , true ); // this is for backwards compatability
|
|
|
|
installCheckTimeout( timeoutMs );
|
|
JSBool ret = JS_CallFunction( _context , _this , func , nargs , smargs , &rval );
|
|
uninstallCheckTimeout( timeoutMs );
|
|
|
|
if ( !ret ) {
|
|
return -3;
|
|
}
|
|
|
|
assert( JS_SetProperty( _context , _global , "return" , &rval ) );
|
|
return 0;
|
|
}
|
|
|
|
int invoke( ScriptingFunction funcAddr , const BSONObj& args, int timeoutMs = 0 ){
|
|
return invoke( (JSFunction*)funcAddr , args , timeoutMs );
|
|
}
|
|
|
|
void gotError( string s ){
|
|
_error = s;
|
|
}
|
|
|
|
string getError(){
|
|
return _error;
|
|
}
|
|
|
|
void injectNative( const char *field, NativeFunction func ){
|
|
string name = field;
|
|
_convertor->setProperty( _global , (name + "_").c_str() , PRIVATE_TO_JSVAL( func ) );
|
|
|
|
stringstream code;
|
|
code << field << " = function(){ var a = [ " << field << "_ ]; for ( var i=0; i<arguments.length; i++ ){ a.push( arguments[i] ); } return nativeHelper.apply( null , a ); }";
|
|
exec( code.str().c_str() );
|
|
|
|
}
|
|
|
|
virtual void gc(){
|
|
JS_GC( _context );
|
|
}
|
|
|
|
JSContext *context() const { return _context; }
|
|
|
|
private:
|
|
JSContext * _context;
|
|
Convertor * _convertor;
|
|
|
|
JSObject * _global;
|
|
JSObject * _this;
|
|
|
|
string _error;
|
|
list<void*> _roots;
|
|
};
|
|
|
|
void errorReporter( JSContext *cx, const char *message, JSErrorReport *report ){
|
|
stringstream ss;
|
|
ss << "JS Error: " << message;
|
|
|
|
if ( report ){
|
|
ss << " " << report->filename << ":" << report->lineno;
|
|
}
|
|
|
|
log() << ss.str() << endl;
|
|
|
|
if ( currentScope.get() ){
|
|
currentScope->gotError( ss.str() );
|
|
}
|
|
}
|
|
|
|
JSBool native_load( JSContext *cx , JSObject *obj , uintN argc, jsval *argv , jsval *rval ){
|
|
Convertor c(cx);
|
|
|
|
Scope * s = currentScope.get();
|
|
|
|
for ( uintN i=0; i<argc; i++ ){
|
|
string filename = c.toString( argv[i] );
|
|
cout << "should load [" << filename << "]" << endl;
|
|
|
|
if ( ! s->execFile( filename , false , true , false ) ){
|
|
JS_ReportError( cx , ((string)"error loading file: " + filename ).c_str() );
|
|
return JS_FALSE;
|
|
}
|
|
}
|
|
|
|
return JS_TRUE;
|
|
}
|
|
|
|
|
|
|
|
void SMEngine::runTest(){
|
|
SMScope s;
|
|
|
|
s.localConnect( "foo" );
|
|
|
|
s.exec( "assert( db.getMongo() )" );
|
|
s.exec( "assert( db.bar , 'collection getting does not work' ); " );
|
|
s.exec( "assert.eq( db._name , 'foo' );" );
|
|
s.exec( "assert( _mongo == db.getMongo() ); " );
|
|
s.exec( "assert( _mongo == db._mongo ); " );
|
|
s.exec( "assert( typeof DB.bar == 'undefined' ); " );
|
|
s.exec( "assert( typeof DB.prototype.bar == 'undefined' , 'resolution is happening on prototype, not object' ); " );
|
|
|
|
s.exec( "assert( db.bar ); " );
|
|
s.exec( "assert( typeof db.addUser == 'function' )" );
|
|
s.exec( "assert( db.addUser == DB.prototype.addUser )" );
|
|
s.exec( "assert.eq( 'foo.bar' , db.bar._fullName ); " );
|
|
s.exec( "db.bar.verify();" );
|
|
|
|
s.exec( "db.bar.silly.verify();" );
|
|
s.exec( "assert.eq( 'foo.bar.silly' , db.bar.silly._fullName )" );
|
|
s.exec( "assert.eq( 'function' , typeof _mongo.find , 'mongo.find is not a function' )" );
|
|
}
|
|
|
|
Scope * SMEngine::createScope(){
|
|
return new SMScope();
|
|
}
|
|
|
|
void Convertor::addRoot( JSFunction * f ){
|
|
if ( ! f )
|
|
return;
|
|
|
|
SMScope * scope = currentScope.get();
|
|
uassert( "need a scope" , scope );
|
|
|
|
scope->addRoot( f , "cf" );
|
|
}
|
|
|
|
}
|
|
|
|
#include "sm_db.cpp"
|