/* * $Id$ */ /* * Harbour Project source code: * The Virtual Machine * * Copyright 1999 Antonio Linares * www - http://www.harbour-project.org * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version, with one exception: * * The exception is that if you link the Harbour Runtime Library (HRL) * and/or the Harbour Virtual Machine (HVM) with other files to produce * an executable, this does not by itself cause the resulting executable * to be covered by the GNU General Public License. Your use of that * executable is in no way restricted on account of linking the HRL * and/or HVM code into it. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA (or visit * their web site at http://www.gnu.org/). * */ /* * The following parts are Copyright of the individual authors. * www - http://www.harbour-project.org * * Copyright 1999 Victor Szel * HB_WORD() * HB___XHELP() * * See doc/license.txt for licensing terms. * */ #ifndef __MPW__ #include #endif #include #include "extend.h" #include "ctoharb.h" #include "errorapi.h" #include "itemapi.h" #include "langapi.h" #include "rddapi.h" #include "pcode.h" #include "set.h" #include "inkey.h" typedef struct _SYMBOLS { PHB_SYMB pModuleSymbols; /* pointer to a one module own symbol table */ USHORT uiModuleSymbols; /* number of symbols on that table */ struct _SYMBOLS * pNext; /* pointer to the next SYMBOLS structure */ SYMBOLSCOPE hScope; /* scope collected from all symbols in module used to speed initialization code */ } SYMBOLS, * PSYMBOLS; /* structure to keep track of all modules symbol tables */ extern HARBOUR HB_SYSINIT( void ); static void hb_vmPopAlias( void ); /* pops the workarea number form the eval stack */ static void hb_vmPopAliasedField( PHB_SYMB ); /* pops an aliased field from the eval stack*/ static void hb_vmPopField( PHB_SYMB ); /* pops an unaliased field from the eval stack */ static void hb_vmPushAlias( void ); /* pushes the current workarea number */ static void hb_vmPushAliasedField( PHB_SYMB ); /* pushes an aliased field on the eval stack */ static void hb_vmPushField( PHB_SYMB ); /* pushes an unaliased field on the eval stack */ static void hb_vmSwapAlias( void ); /* swaps items on the eval stack and pops the workarea number */ static ERRCODE hb_vmSelectWorkarea( PHB_ITEM ); /* select the workarea using a given item or a substituted value */ static void hb_vmDoInitStatics( void ); /* executes all _INITSTATICS functions */ static void hb_vmDoInitFunctions( void ); /* executes all defined PRGs INIT functions */ static void hb_vmDoExitFunctions( void ); /* executes all defined PRGs EXIT functions */ static void hb_vmReleaseLocalSymbols( void ); /* releases the memory of the local symbols linked list */ static void hb_vmDebuggerShowLine( USHORT uiLine ); /* makes the debugger shows a specific source code line */ static void hb_vmDebuggerEndProc( void ); /* notifies the debugger for an endproc */ static void hb_vmArrayNew( HB_ITEM_PTR, USHORT ); /* creates array */ #ifdef HARBOUR_OBJ_GENERATION /* TODO: Remove these (WORD/DWORD) when the compiler is cleaned up from them. */ #if defined(__IBMCPP__) #undef WORD /* 2 bytes unsigned */ typedef unsigned short int WORD; #else #if ! defined(HB_DONT_DEFINE_BASIC_TYPES) #undef WORD /* 2 bytes unsigned */ typedef unsigned short int WORD; #endif #endif static void hb_vmProcessObjSymbols ( void ); /* process Harbour generated OBJ symbols */ typedef struct { WORD wSymbols; /* module local symbol table symbols amount */ PHB_SYMB pSymbols; /* module local symbol table address */ } OBJSYMBOLS, * POBJSYMBOLS; /* structure used from Harbour generated OBJs */ #ifdef __cplusplus extern "C" POBJSYMBOLS HB_FIRSTSYMBOL, HB_LASTSYMBOL; #else extern POBJSYMBOLS HB_FIRSTSYMBOL, HB_LASTSYMBOL; #endif #endif /* virtual machine state */ STACK stack; HB_SYMB symEval = { "__EVAL", FS_PUBLIC, hb_vmDoBlock, 0 }; /* symbol to evaluate codeblocks */ HB_ITEM aStatics; /* Harbour array to hold all application statics variables */ static BOOL s_bDebugging = FALSE; static BOOL s_bDebugShowLines = FALSE; /* update source code line on the debugger display */ static PHB_SYMB s_pSymStart = NULL; /* start symbol of the application. MAIN() is not required */ static PSYMBOLS s_pSymbols = NULL; /* to hold a linked list of all different modules symbol tables */ static BYTE s_byErrorLevel = 0; /* application exit errorlevel */ /* Stores the position on the stack of current SEQUENCE envelope or 0 if no * SEQUENCE is active */ static LONG s_lRecoverBase = 0; #define HB_RECOVER_STATE -1 #define HB_RECOVER_BASE -2 #define HB_RECOVER_ADDRESS -3 #define HB_RECOVER_VALUE -4 /* Request for some action - stop processing of opcodes */ static USHORT s_uiActionRequest = 0; /* uncomment it to trace the virtual machine activity */ /* #define bHB_DEBUG */ #if defined(bHB_DEBUG) #define HB_DEBUG( x ) printf( x ) #define HB_DEBUG2( x, y ) printf( x, y ) #else #define HB_DEBUG( x ) #define HB_DEBUG2( x, y ) #endif /* application entry point */ int main( int argc, char * argv[] ) { HB_DEBUG( "main\n" ); hb_cmdargInit( argc, argv ); /* initialize internal data structures */ aStatics.type = IT_NIL; stack.Return.type = IT_NIL; hb_xinit(); hb_errInit(); hb_stackInit(); hb_dynsymNew( &symEval ); /* initialize dynamic symbol for evaluating codeblocks */ hb_setInitialize(); /* initialize Sets */ hb_consoleInitialize(); /* initialize Console */ hb_memvarsInit(); #ifdef HARBOUR_OBJ_GENERATION hb_vmProcessObjSymbols(); /* initialize Harbour generated OBJs symbols */ #endif hb_vmSymbolInit_RT(); /* initialize symbol table with runtime support functions */ /* Check for some internal switches */ if( hb_cmdargCheck( "INFO" ) ) { char * pszVersion = hb_version( 1 ); printf( pszVersion ); printf( hb_consoleGetNewLine() ); hb_xfree( pszVersion ); } /* Call functions that initializes static variables * Static variables have to be initialized before any INIT functions * because INIT function can use static variables */ hb_vmDoInitStatics(); hb_vmDoInitFunctions(); /* process defined INIT functions */ /* This is undocumented CA-Clipper, if there's a function called _APPMAIN it will be executed first. */ { PHB_DYNS pDynSym = hb_dynsymFind( "_APPMAIN" ); if( pDynSym && pDynSym->pSymbol->pFunPtr ) s_pSymStart = pDynSym->pSymbol; #ifdef HARBOUR_START_PROCEDURE else { pDynSym = hb_dynsymFind( HARBOUR_START_PROCEDURE ); if( pDynSym && pDynSym->pSymbol->pFunPtr ) s_pSymStart = pDynSym->pSymbol; else hb_errInternal( 9999, "Can\'t locate the starting procedure: \'%s\'", HARBOUR_START_PROCEDURE, NULL ); } #else #ifndef HARBOUR_STRICT_CLIPPER_COMPATIBLE else if( ! s_pSymStart ) hb_errInternal( 9999, "No starting procedure", NULL, NULL ); #endif #endif } if( s_pSymStart ) { int i; int iArgCount; hb_vmPushSymbol( s_pSymStart ); /* pushes first FS_PUBLIC defined symbol to the stack */ hb_vmPushNil(); /* places NIL at self */ iArgCount = 0; for( i = 1; i < argc; i++ ) /* places application parameters on the stack */ { /* Filter out any parameters beginning with //, like //INFO */ if( ! hb_cmdargIsInternal( argv[ i ] ) ) { hb_vmPushString( argv[ i ], strlen( argv[ i ] ) ); iArgCount++; } } hb_vmDo( iArgCount ); /* invoke it with number of supplied parameters */ } hb_vmQuit(); /* This point is never reached */ return 0; } void hb_vmQuit( void ) { s_uiActionRequest = 0; /* EXIT procedures should be processed */ hb_vmDoExitFunctions(); /* process defined EXIT functions */ while( stack.pPos > stack.pItems ) hb_stackPop(); hb_itemClear( &stack.Return ); hb_arrayRelease( &aStatics ); hb_rddShutDown(); hb_errExit(); hb_clsReleaseAll(); hb_vmReleaseLocalSymbols(); /* releases the local modules linked list */ hb_dynsymRelease(); /* releases the dynamic symbol table */ hb_consoleRelease(); /* releases Console */ hb_setRelease(); /* releases Sets */ hb_memvarsRelease(); hb_stackFree(); /* hb_dynsymLog(); */ hb_xexit(); HB_DEBUG( "Done!\n" ); exit( s_byErrorLevel ); } void hb_vmExecute( BYTE * pCode, PHB_SYMB pSymbols ) { BYTE bCode; USHORT w = 0; USHORT uiParams; BOOL bCanRecover = FALSE; ULONG ulPrivateBase = hb_memvarGetPrivatesBase(); HB_DEBUG( "hb_vmExecute\n" ); while( ( bCode = pCode[ w ] ) != HB_P_ENDPROC ) { switch( bCode ) { case HB_P_AND: hb_vmAnd(); w++; break; case HB_P_ARRAYAT: hb_vmArrayAt(); w++; break; case HB_P_ARRAYPUT: hb_vmArrayPut(); w++; break; case HB_P_DEC: hb_vmDec(); w++; break; case HB_P_DIMARRAY: hb_vmDimArray( pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ) ); w += 3; break; case HB_P_DIVIDE: hb_vmDivide(); w++; break; case HB_P_DO: hb_inkeyPoll(); /* Poll the console keyboard */ hb_vmDo( pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ) ); w += 3; break; case HB_P_DUPLICATE: hb_vmDuplicate(); w++; break; case HB_P_DUPLTWO: hb_vmDuplTwo(); w++; break; case HB_P_ENDBLOCK: hb_vmEndBlock(); HB_DEBUG( "EndBlock\n" ); return; /* end of a codeblock - stop evaluation */ case HB_P_EQUAL: hb_vmEqual( FALSE ); w++; break; case HB_P_EXACTLYEQUAL: hb_vmEqual( TRUE ); w++; break; case HB_P_FALSE: hb_vmPushLogical( FALSE ); w++; break; case HB_P_FORTEST: hb_vmForTest(); w++; break; case HB_P_FRAME: hb_vmFrame( pCode[ w + 1 ], pCode[ w + 2 ] ); w += 3; break; case HB_P_FUNCPTR: hb_vmFuncPtr(); w++; break; case HB_P_FUNCTION: hb_vmFunction( pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ) ); w += 3; break; case HB_P_GENARRAY: hb_vmGenArray( pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ) ); w += 3; break; case HB_P_GREATER: hb_vmGreater(); w++; break; case HB_P_GREATEREQUAL: hb_vmGreaterEqual(); w++; break; case HB_P_INC: hb_vmInc(); w++; break; case HB_P_INSTRING: hb_vmInstring(); w++; break; case HB_P_JUMP: uiParams = pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ); if( uiParams ) w += uiParams; else w += 3; break; case HB_P_JUMPFALSE: if( ! hb_vmPopLogical() ) w += pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ); else w += 3; break; case HB_P_JUMPTRUE: if( hb_vmPopLogical() ) w += pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ); else w += 3; break; case HB_P_LESS: hb_vmLess(); w++; break; case HB_P_LESSEQUAL: hb_vmLessEqual(); w++; break; case HB_P_LINE: stack.pBase->item.asSymbol.lineno = pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ); if( s_bDebugging && s_bDebugShowLines ) hb_vmDebuggerShowLine( pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ) ); w += 3; break; case HB_P_LOCALNAME: hb_vmLocalName( pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ), ( char * ) pCode + w + 3 ); w += 3; while( pCode[ w++ ] ); break; case HB_P_MESSAGE: uiParams = pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ); hb_vmMessage( pSymbols + uiParams ); w += 3; break; case HB_P_MINUS: hb_vmMinus(); w++; break; case HB_P_MODULENAME: hb_vmModuleName( ( char * ) pCode + w + 1 ); while( pCode[ w++ ] ); break; case HB_P_MODULUS: hb_vmModulus(); w++; break; case HB_P_MULT: hb_vmMult(); w++; break; case HB_P_NEGATE: hb_vmNegate(); w++; break; case HB_P_NOT: hb_vmNot(); w++; break; case HB_P_NOTEQUAL: hb_vmNotEqual(); w++; break; case HB_P_OR: hb_vmOr(); w++; break; case HB_P_PARAMETER: uiParams = pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ); hb_memvarSetValue( pSymbols + uiParams, stack.pBase + 1 + pCode[ w + 3 ] ); HB_DEBUG( "(hb_vmPopParameter)\n" ); w += 4; break; case HB_P_PLUS: hb_vmPlus(); w++; break; case HB_P_POP: hb_stackPop(); w++; break; case HB_P_POPALIAS: hb_vmPopAlias(); w++; break; case HB_P_POPALIASEDFIELD: uiParams = pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ); hb_vmPopAliasedField( pSymbols + uiParams ); w += 3; break; case HB_P_POPFIELD: uiParams = pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ); hb_vmPopField( pSymbols + uiParams ); w += 3; break; case HB_P_POPLOCAL: hb_vmPopLocal( pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ) ); w += 3; break; case HB_P_POPMEMVAR: uiParams = pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ); hb_stackDec(); hb_memvarSetValue( pSymbols + uiParams, stack.pPos ); hb_itemClear( stack.pPos ); HB_DEBUG( "(hb_vmPopMemvar)\n" ); w += 3; break; case HB_P_POPSTATIC: hb_vmPopStatic( pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ) ); w += 3; break; case HB_P_POWER: hb_vmPower(); w++; break; case HB_P_PUSHALIAS: hb_vmPushAlias(); w++; break; case HB_P_PUSHALIASEDFIELD: uiParams = pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ); hb_vmPushAliasedField( pSymbols + uiParams ); w += 3; break; case HB_P_PUSHBLOCK: /* +0 -> _pushblock * +1 +2 -> size of codeblock * +3 +4 -> number of expected parameters * +5 +6 -> number of referenced local variables * +7 -> start of table with referenced local variables */ hb_vmPushBlock( pCode + w, pSymbols ); w += ( pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ) ); break; case HB_P_PUSHDOUBLE: hb_vmPushDouble( * ( double * ) ( &pCode[ w + 1 ] ), ( int ) * ( BYTE * ) &pCode[ w + 1 + sizeof( double ) ] ); w += 1 + sizeof( double ) + 1; break; case HB_P_PUSHFIELD: uiParams = pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ); hb_vmPushField( pSymbols + uiParams ); w += 3; break; case HB_P_PUSHINT: hb_vmPushInteger( pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ) ); w += 3; break; case HB_P_PUSHLOCAL: hb_vmPushLocal( pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ) ); w += 3; break; case HB_P_PUSHLOCALREF: hb_vmPushLocalByRef( pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ) ); w += 3; break; case HB_P_PUSHLONG: hb_vmPushLong( * ( long * ) ( &pCode[ w + 1 ] ) ); w += 5; break; case HB_P_PUSHMEMVAR: uiParams = pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ); hb_memvarGetValue( stack.pPos, pSymbols + uiParams ); hb_stackPush(); HB_DEBUG( "(hb_vmPushMemvar)\n" ); w += 3; break; case HB_P_PUSHMEMVARREF: uiParams = pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ); hb_memvarGetRefer( stack.pPos, pSymbols + uiParams ); hb_stackPush(); HB_DEBUG( "(hb_vmPushMemvarRef)\n" ); w += 3; break; case HB_P_PUSHNIL: stack.pPos->type = IT_NIL; hb_stackPush(); HB_DEBUG( "(hb_vmPushNil)\n" ); w++; break; case HB_P_PUSHSELF: hb_vmPush( stack.pBase + 1 ); w++; break; case HB_P_PUSHSTATIC: hb_vmPushStatic( pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ) ); w += 3; break; case HB_P_PUSHSTATICREF: hb_vmPushStaticByRef( pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ) ); w += 3; break; case HB_P_PUSHSTR: { USHORT uiSize = pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ); hb_vmPushString( ( char * ) pCode + w + 3, ( ULONG ) uiSize ); w += ( uiSize + 3 ); break; } case HB_P_PUSHSYM: uiParams = pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ); hb_vmPushSymbol( pSymbols + uiParams ); w += 3; break; case HB_P_SWAPALIAS: hb_vmSwapAlias(); w++; break; case HB_P_RETVALUE: hb_vmRetValue(); w++; break; case HB_P_SEQBEGIN: /* * Create the SEQUENCE envelope * [ break return value ] -4 * [ address of recover code ] -3 * [ previous recover base ] -2 * [ current recovery state ] -1 * [ ] <- new recover base */ /* * 1) clear the storage for value returned by BREAK statement */ stack.pPos->type = IT_NIL; hb_stackPush(); /* * 2) store the address of RECOVER or END opcode */ stack.pPos->type = IT_LONG; stack.pPos->item.asLong.value = w + pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ); hb_stackPush(); /* * 3) store current RECOVER base */ stack.pPos->type = IT_LONG; stack.pPos->item.asLong.value = s_lRecoverBase; hb_stackPush(); /* * 4) store current bCanRecover flag - in a case of nested sequences * in the same procedure/function */ stack.pPos->type = IT_LOGICAL; stack.pPos->item.asLogical.value = bCanRecover; hb_stackPush(); /* * set new recover base */ s_lRecoverBase = stack.pPos - stack.pItems; /* * we are now inside a valid SEQUENCE envelope */ bCanRecover = TRUE; w += 3; break; case HB_P_SEQEND: /* * Remove the SEQUENCE envelope * This is executed either at the end of sequence or as the * response to the break statement if there is no RECOVER clause */ /* * 4) Restore previous recovery state */ hb_stackDec(); bCanRecover = stack.pPos->item.asLogical.value; stack.pPos->type = IT_NIL; /* * 3) Restore previous RECOVER base */ hb_stackDec(); s_lRecoverBase = stack.pPos->item.asLong.value; stack.pPos->type = IT_NIL; /* * 2) Remove RECOVER address */ hb_stackDec(); stack.pPos->type = IT_NIL; /* 1) Discard the value returned by BREAK statement - there * was no RECOVER clause or there was no BREAK statement */ hb_stackPop(); /* * skip outside of SEQUENCE structure */ w += pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ); break; case HB_P_SEQRECOVER: /* * Execute the RECOVER code */ /* * 4) Restore previous recovery state */ hb_stackDec(); bCanRecover = stack.pPos->item.asLogical.value; stack.pPos->type = IT_NIL; /* * 3) Restore previous RECOVER base */ hb_stackDec(); s_lRecoverBase = stack.pPos->item.asLong.value; stack.pPos->type = IT_NIL; /* * 2) Remove RECOVER address */ hb_stackDec(); stack.pPos->type = IT_NIL; /* * 1) Leave the value returned from BREAK - it will be popped * in next executed opcode */ w++; break; case HB_P_SFRAME: uiParams = pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ); hb_vmSFrame( pSymbols + uiParams ); w += 3; break; case HB_P_STATICS: uiParams = pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ); hb_vmStatics( pSymbols + uiParams ); w += 3; break; case HB_P_TRUE: hb_vmPushLogical( TRUE ); w++; break; case HB_P_ZERO: hb_vmPushInteger( 0 ); w++; break; case HB_P_NOOP: /* Intentionally do nothing */ break; default: /* TODO: Include to failing pcode in the error message */ hb_errInternal( 9999, "Unsupported VM opcode", NULL, NULL ); break; } if( s_uiActionRequest ) { if( s_uiActionRequest & HB_BREAK_REQUESTED ) { if( bCanRecover ) { /* * There is the BEGIN/END sequence deifined in current * procedure/function - use it to continue opcodes execution */ /* * remove all items placed on the stack after BEGIN code */ while( stack.pPos > stack.pItems + s_lRecoverBase ) hb_stackPop(); /* * reload the address of recovery code */ w = stack.pItems[ s_lRecoverBase + HB_RECOVER_ADDRESS ].item.asLong.value; /* * leave the SEQUENCE envelope on the stack - it will * be popped either in RECOVER or END opcode */ s_uiActionRequest = 0; } else break; } else if( s_uiActionRequest & HB_QUIT_REQUESTED ) break; } } hb_memvarSetPrivatesBase( ulPrivateBase ); } void hb_vmAnd( void ) { PHB_ITEM pItem2 = stack.pPos - 1; PHB_ITEM pItem1 = stack.pPos - 2; HB_DEBUG( "And\n" ); if( IS_LOGICAL( pItem1 ) && IS_LOGICAL( pItem2 ) ) { BOOL bResult = pItem1->item.asLogical.value && pItem2->item.asLogical.value; hb_stackPop(); hb_stackPop(); hb_vmPushLogical( bResult ); } else hb_errRT_BASE( EG_ARG, 1078, NULL, ".AND." ); } void hb_vmArrayAt( void ) { PHB_ITEM pIndex = stack.pPos - 1; PHB_ITEM pArray = stack.pPos - 2; ULONG ulIndex; if( IS_INTEGER( pIndex ) ) ulIndex = ( ULONG ) pIndex->item.asInteger.value; else if( IS_LONG( pIndex ) ) ulIndex = ( ULONG ) pIndex->item.asLong.value; else if( IS_DOUBLE( pIndex ) ) ulIndex = ( ULONG ) pIndex->item.asDouble.value; else { PHB_ITEM pResult = hb_errRT_BASE_Subst( EG_ARG, 1068, NULL, hb_langDGetErrorDesc( EG_ARRACCESS ) ); if( pResult ) { hb_stackPop(); hb_stackPop(); hb_vmPush( pResult ); hb_itemRelease( pResult ); } return; } if( ! hb_arrayError( pArray, ulIndex, FALSE ) ) { HB_ITEM item; hb_arrayGet( pArray, ulIndex, &item ); hb_stackPop(); hb_stackPop(); hb_itemCopy( stack.pPos, &item ); hb_itemClear( &item ); hb_stackPush(); } } void hb_vmArrayPut( void ) { PHB_ITEM pValue = stack.pPos - 1; PHB_ITEM pIndex = stack.pPos - 2; PHB_ITEM pArray = stack.pPos - 3; ULONG ulIndex; if( IS_INTEGER( pIndex ) ) ulIndex = pIndex->item.asInteger.value; else if( IS_LONG( pIndex ) ) ulIndex = pIndex->item.asLong.value; else if( IS_DOUBLE( pIndex ) ) ulIndex = pIndex->item.asDouble.value; else { hb_errRT_BASE( EG_ARG, 1069, NULL, hb_langDGetErrorDesc( EG_ARRASSIGN ) ); return; } if( ! hb_arrayError( pArray, ulIndex, TRUE ) ) { hb_arraySet( pArray, ulIndex, pValue ); hb_itemCopy( pArray, pValue ); /* places pValue at pArray position */ hb_stackPop(); hb_stackPop(); } } static void hb_vmDebuggerEndProc( void ) { HB_ITEM item; hb_itemCopy( &item, &stack.Return ); /* saves the previous returned value */ s_bDebugShowLines = FALSE; hb_vmPushSymbol( hb_dynsymFind( "__DBGENTRY" )->pSymbol ); hb_vmPushNil(); hb_vmDo( 0 ); s_bDebugShowLines = TRUE; hb_itemCopy( &stack.Return, &item ); /* restores the previous returned value */ hb_itemClear( &item ); } static void hb_vmDebuggerShowLine( USHORT uiLine ) /* makes the debugger shows a specific source code line */ { s_bDebugShowLines = FALSE; hb_vmPushSymbol( hb_dynsymFind( "__DBGENTRY" )->pSymbol ); hb_vmPushNil(); hb_vmPushInteger( uiLine ); hb_vmDo( 1 ); s_bDebugShowLines = TRUE; } void hb_vmDec( void ) { if( IS_NUMERIC( stack.pPos - 1 ) ) { int iDec; double dNumber = hb_vmPopDouble( &iDec ); hb_vmPushNumber( --dNumber, iDec ); } else if( IS_DATE( stack.pPos - 1 ) ) hb_vmPushDate( hb_vmPopDate() - 1 ); else if( IS_OBJECT( stack.pPos - 1 ) && hb_objHasMsg( stack.pPos - 1, "--" ) ) hb_vmOperatorCallUnary( stack.pPos - 1, "--" ); else { PHB_ITEM pResult = hb_errRT_BASE_Subst( EG_ARG, 1087, NULL, "--" ); if( pResult ) { hb_stackPop(); hb_vmPush( pResult ); hb_itemRelease( pResult ); } } } /* This function creates an array item using 'uiDimension' as an index * to retrieve the number of elements from the stack */ static void hb_vmArrayNew( HB_ITEM_PTR pArray, USHORT uiDimension ) { ULONG ulElements; HB_ITEM_PTR pDim = stack.pPos - uiDimension; /* use the proper type of number of elements */ switch( pDim->type & ~IT_BYREF ) { case IT_INTEGER: ulElements = ( ULONG ) pDim->item.asInteger.value; break; case IT_LONG: ulElements = pDim->item.asLong.value; break; case IT_DOUBLE: ulElements = ( ULONG ) pDim->item.asDouble.value; break; default: /* NOTE: Clipper creates empty array if non-numeric value is * specified as dimension and stops further processing. * There is no runtime error generated. */ ulElements = 0; break; } /* create an array */ hb_arrayNew( pArray, ulElements ); if( --uiDimension ) { /* call self recursively to create next dimensions */ while( ulElements ) hb_vmArrayNew( hb_arrayGetItemPtr( pArray, ulElements-- ), uiDimension ); } } void hb_vmDimArray( USHORT uiDimensions ) /* generates an uiDimensions Array and initialize those dimensions from the stack values */ { HB_ITEM itArray; itArray.type = IT_NIL; hb_vmArrayNew( &itArray, uiDimensions ); while( uiDimensions-- ) hb_stackPop(); hb_itemCopy( stack.pPos, &itArray ); hb_itemClear( &itArray ); hb_stackPush(); } void hb_vmDivide( void ) { if( IS_NUMERIC( stack.pPos - 1 ) && IS_NUMERIC( stack.pPos - 2 ) ) { BOOL bIntegerOperands = !IS_DOUBLE( stack.pPos - 1 ) && !IS_DOUBLE( stack.pPos - 2 ); int iDec1, iDec2; double d2 = hb_vmPopDouble( &iDec2 ); double d1 = hb_vmPopDouble( &iDec1 ); if( d2 == 0.0 ) { PHB_ITEM pResult = hb_errRT_BASE_Subst( EG_ZERODIV, 1340, NULL, "/" ); if( pResult ) { hb_vmPush( pResult ); hb_itemRelease( pResult ); } } else { /* If all both operand was integer and the result is an integer, too, push the number without decimals. Clipper compatible. */ if( bIntegerOperands && fmod( d1, d2 ) == 0.0 ) hb_vmPushNumber( d1 / d2, 0 ); else hb_vmPushNumber( d1 / d2, hb_set.HB_SET_DECIMALS ); } } else { PHB_ITEM pResult = hb_errRT_BASE_Subst( EG_ARG, 1084, NULL, "/" ); if( pResult ) { hb_stackPop(); hb_stackPop(); hb_vmPush( pResult ); hb_itemRelease( pResult ); } } } void hb_vmDo( USHORT uiParams ) { PHB_ITEM pItem = stack.pPos - uiParams - 2; /* procedure name */ PHB_SYMB pSym = pItem->item.asSymbol.value; LONG wStackBase = stack.pBase - stack.pItems; /* as the stack memory block could change */ LONG wItemIndex = pItem - stack.pItems; PHB_ITEM pSelf = stack.pPos - uiParams - 1; /* NIL, OBJECT or BLOCK */ PHB_FUNC pFunc; int iStatics = stack.iStatics; /* Return iStatics position */ BOOL bDebugPrevState = s_bDebugging; s_bDebugging = FALSE; if( ! IS_SYMBOL( pItem ) ) { /* QUESTION: Is this call needed ? [vszel] */ hb_stackDispLocal(); hb_errInternal( 9999, "Symbol item expected as a base from hb_vmDo()", NULL, NULL ); } #if 0 if( ! IS_NIL( pSelf ) ) { /* QUESTION: Is this call needed ? [vszel] */ hb_stackDispLocal(); hb_errInternal( 9999, "Invalid symbol type for self from hb_vmDo()", NULL, NULL ); } #endif pItem->item.asSymbol.lineno = 0; pItem->item.asSymbol.paramcnt = uiParams; stack.pBase = stack.pItems + pItem->item.asSymbol.stackbase; pItem->item.asSymbol.stackbase = wStackBase; HB_DEBUG2( "Do with %i params\n", uiParams ); if( ! IS_NIL( pSelf ) ) /* are we sending a message ? */ { if( pSym == &( symEval ) && IS_BLOCK( pSelf ) ) pFunc = pSym->pFunPtr; /* __EVAL method = function */ else pFunc = hb_objGetMethod( pSelf, pSym ); if( pFunc ) pFunc(); else { PHB_ITEM pResult; if( pSym->szName[ 0 ] == '_' ) pResult = hb_errRT_BASE_Subst( EG_NOVARMETHOD, 1005, NULL, pSym->szName + 1 ); else pResult = hb_errRT_BASE_Subst( EG_NOMETHOD, 1004, NULL, pSym->szName ); if( pResult ) { hb_itemReturn( pResult ); hb_itemRelease( pResult ); } } } else /* it is a function */ { pFunc = pSym->pFunPtr; if( pFunc ) pFunc(); else hb_errInternal( 9999, "Invalid function pointer (%s) from hb_vmDo()", pSym->szName, NULL ); } while( stack.pPos > stack.pItems + wItemIndex ) hb_stackPop(); stack.pBase = stack.pItems + wStackBase; stack.iStatics = iStatics; if( s_bDebugging ) hb_vmDebuggerEndProc(); s_bDebugging = bDebugPrevState; } HARBOUR hb_vmDoBlock( void ) { PHB_ITEM pBlock = stack.pBase + 1; USHORT uiStackBase = stack.pBase - stack.pItems; /* as the stack memory block could change */ USHORT uiLine; int iParam; if( ! IS_BLOCK( pBlock ) ) hb_errInternal( 9999, "Codeblock expected from hb_vmDoBlock()", NULL, NULL ); /* Check for valid count of parameters */ iParam = pBlock->item.asBlock.paramcnt - hb_pcount(); /* add missing parameters */ while( iParam-- > 0 ) hb_vmPushNil(); /* set the current line number to a line where the codeblock was defined */ uiLine = stack.pBase->item.asSymbol.lineno; stack.pBase->item.asSymbol.lineno = pBlock->item.asBlock.lineno; hb_codeblockEvaluate( pBlock ); /* restore stack pointers */ stack.pBase = stack.pItems + uiStackBase; stack.pBase->item.asSymbol.lineno = uiLine; HB_DEBUG( "End of DoBlock\n" ); } void hb_vmDuplicate( void ) { hb_itemCopy( stack.pPos, stack.pPos - 1 ); hb_stackPush(); } void hb_vmDuplTwo( void ) { hb_itemCopy( stack.pPos, stack.pPos - 2 ); hb_stackPush(); hb_itemCopy( stack.pPos, stack.pPos - 2 ); hb_stackPush(); } void hb_vmEndBlock( void ) { hb_stackDec(); /* make the last item visible */ hb_itemCopy( &stack.Return, stack.pPos ); /* copy it */ hb_itemClear( stack.pPos ); /* and now clear it */ HB_DEBUG( "EndBlock\n" ); } void hb_vmEqual( BOOL bExact ) { PHB_ITEM pItem2 = stack.pPos - 1; PHB_ITEM pItem1 = stack.pPos - 2; if( IS_NIL( pItem1 ) && IS_NIL( pItem2 ) ) { hb_stackPop(); hb_stackPop(); hb_vmPushLogical( TRUE ); } else if( IS_NIL( pItem1 ) || IS_NIL( pItem2 ) ) { hb_stackPop(); hb_stackPop(); hb_vmPushLogical( FALSE ); } else if( IS_STRING( pItem1 ) && IS_STRING( pItem2 ) ) { int i = hb_itemStrCmp( pItem1, pItem2, bExact ); hb_stackPop(); hb_stackPop(); hb_vmPushLogical( i == 0 ); } else if( IS_NUMERIC( pItem1 ) && IS_NUMERIC( pItem2 ) ) { int iDec; hb_vmPushLogical( hb_vmPopDouble( &iDec ) == hb_vmPopDouble( &iDec ) ); } else if( IS_DATE( pItem1 ) && IS_DATE( pItem2 ) ) hb_vmPushLogical( hb_vmPopDate() == hb_vmPopDate() ); else if( IS_LOGICAL( pItem1 ) && IS_LOGICAL( pItem2 ) ) hb_vmPushLogical( hb_vmPopLogical() == hb_vmPopLogical() ); else if( IS_OBJECT( pItem1 ) && hb_objHasMsg( pItem1, "==" ) ) hb_vmOperatorCall( pItem1, pItem2, "==" ); else if( IS_OBJECT( pItem1 ) && hb_objHasMsg( pItem1, "=" ) ) hb_vmOperatorCall( pItem1, pItem2, "=" ); else if( bExact && IS_ARRAY( pItem1 ) && IS_ARRAY( pItem2 ) ) { BOOL bResult = pItem1->item.asArray.value->pItems && pItem2->item.asArray.value->pItems && pItem1->item.asArray.value->pItems == pItem2->item.asArray.value->pItems; hb_stackPop(); hb_stackPop(); hb_vmPushLogical( bResult ); } else if( ( pItem1->type != pItem2->type ) || ( IS_BLOCK( pItem1 ) && IS_BLOCK( pItem2 ) ) || ( ! bExact && IS_ARRAY( pItem1 ) && IS_ARRAY( pItem2 ) ) ) { PHB_ITEM pResult; if( bExact ) pResult = hb_errRT_BASE_Subst( EG_ARG, 1070, NULL, "==" ); else pResult = hb_errRT_BASE_Subst( EG_ARG, 1071, NULL, "=" ); if( pResult ) { hb_stackPop(); hb_stackPop(); hb_vmPush( pResult ); hb_itemRelease( pResult ); } } else { hb_stackPop(); hb_stackPop(); hb_vmPushLogical( FALSE ); } } void hb_vmForTest( void ) /* Test to check the end point of the FOR */ { if( IS_NUMERIC( stack.pPos - 1 ) ) { int iDec; double dStep; BOOL bEqual; dStep = hb_vmPopDouble( &iDec ); /* NOTE: step of zero will cause endless loop, as in Clipper */ if( dStep > 0 ) /* Positive loop. Use LESS */ hb_vmLess(); else if( dStep < 0 ) /* Negative loop. Use GREATER */ hb_vmGreater(); bEqual = hb_vmPopLogical(); /* Logical should be on top of stack */ hb_vmPushNumber( dStep, iDec ); /* Push the step expression back on the stack */ hb_vmPushLogical( bEqual ); } else hb_errRT_BASE( EG_ARG, 1073, NULL, "<" ); } void hb_vmFrame( BYTE bLocals, BYTE bParams ) { int iTotal = bLocals + bParams; if( iTotal ) { int i; for( i = 0; i < ( iTotal - stack.pBase->item.asSymbol.paramcnt ); i++ ) hb_vmPushNil(); } HB_DEBUG( "Frame\n" ); } void hb_vmFuncPtr( void ) /* pushes a function address pointer. Removes the symbol from the satck */ { PHB_ITEM pItem = stack.pPos - 1; if( IS_SYMBOL( pItem ) ) { hb_stackPop(); hb_vmPushLong( ( ULONG ) pItem->item.asSymbol.value->pFunPtr ); } else hb_errInternal( 9999, "Symbol item expected from hb_vmFuncPtr()", NULL, NULL ); } void hb_vmFunction( USHORT uiParams ) { hb_itemClear( &stack.Return ); hb_vmDo( uiParams ); hb_itemCopy( stack.pPos, &stack.Return ); hb_stackPush(); } void hb_vmGenArray( ULONG ulElements ) /* generates an ulElements Array and fills it from the stack values */ { HB_ITEM itArray; ULONG ulPos; itArray.type = IT_NIL; hb_arrayNew( &itArray, ulElements ); for( ulPos = 0; ulPos < ulElements; ulPos++ ) hb_itemCopy( itArray.item.asArray.value->pItems + ulPos, stack.pPos - ulElements + ulPos ); for( ulPos = 0; ulPos < ulElements; ulPos++ ) hb_stackPop(); hb_itemCopy( stack.pPos, &itArray ); hb_itemClear( &itArray ); hb_stackPush(); } void hb_vmGreater( void ) { if( IS_STRING( stack.pPos - 2 ) && IS_STRING( stack.pPos - 1 ) ) { int i = hb_itemStrCmp( stack.pPos - 2, stack.pPos - 1, FALSE ); hb_stackPop(); hb_stackPop(); hb_vmPushLogical( i > 0 ); } else if( IS_NUMERIC( stack.pPos - 1 ) && IS_NUMERIC( stack.pPos - 2 ) ) { double dNumber2 = hb_vmPopNumber(); double dNumber1 = hb_vmPopNumber(); hb_vmPushLogical( dNumber1 > dNumber2 ); } else if( IS_DATE( stack.pPos - 1 ) && IS_DATE( stack.pPos - 2 ) ) { LONG lDate2 = hb_vmPopDate(); LONG lDate1 = hb_vmPopDate(); hb_vmPushLogical( lDate1 > lDate2 ); } else if( IS_LOGICAL( stack.pPos - 1 ) && IS_LOGICAL( stack.pPos - 2 ) ) { BOOL bLogical2 = hb_vmPopLogical(); BOOL bLogical1 = hb_vmPopLogical(); hb_vmPushLogical( bLogical1 > bLogical2 ); } else if( IS_OBJECT( stack.pPos - 2 ) && hb_objHasMsg( stack.pPos - 2, ">" ) ) hb_vmOperatorCall( stack.pPos - 2, stack.pPos - 1, ">" ); else if( ( stack.pPos - 2 )->type != ( stack.pPos - 1 )->type ) { PHB_ITEM pResult = hb_errRT_BASE_Subst( EG_ARG, 1075, NULL, ">" ); if( pResult ) { hb_stackPop(); hb_vmPush( pResult ); hb_itemRelease( pResult ); } } } void hb_vmGreaterEqual( void ) { if( IS_STRING( stack.pPos - 2 ) && IS_STRING( stack.pPos - 1 ) ) { int i = hb_itemStrCmp( stack.pPos - 2, stack.pPos - 1, FALSE ); hb_stackPop(); hb_stackPop(); hb_vmPushLogical( i >= 0 ); } else if( IS_NUMERIC( stack.pPos - 1 ) && IS_NUMERIC( stack.pPos - 2 ) ) { double dNumber2 = hb_vmPopNumber(); double dNumber1 = hb_vmPopNumber(); hb_vmPushLogical( dNumber1 >= dNumber2 ); } else if( IS_DATE( stack.pPos - 1 ) && IS_DATE( stack.pPos - 2 ) ) { LONG lDate2 = hb_vmPopDate(); LONG lDate1 = hb_vmPopDate(); hb_vmPushLogical( lDate1 >= lDate2 ); } else if( IS_LOGICAL( stack.pPos - 1 ) && IS_LOGICAL( stack.pPos - 2 ) ) { BOOL bLogical2 = hb_vmPopLogical(); BOOL bLogical1 = hb_vmPopLogical(); hb_vmPushLogical( bLogical1 >= bLogical2 ); } else if( IS_OBJECT( stack.pPos - 2 ) && hb_objHasMsg( stack.pPos - 2, ">=" ) ) hb_vmOperatorCall( stack.pPos - 2, stack.pPos - 1, ">=" ); else if( ( stack.pPos - 2 )->type != ( stack.pPos - 1 )->type ) { PHB_ITEM pResult = hb_errRT_BASE_Subst( EG_ARG, 1076, NULL, ">=" ); if( pResult ) { hb_stackPop(); hb_vmPush( pResult ); hb_itemRelease( pResult ); } } } void hb_vmInc( void ) { if( IS_NUMERIC( stack.pPos - 1 ) ) { int iDec; double dNumber = hb_vmPopDouble( &iDec ); hb_vmPushNumber( ++dNumber, iDec ); } else if( IS_DATE( stack.pPos - 1 ) ) hb_vmPushDate( hb_vmPopDate() + 1 ); else if( IS_OBJECT( stack.pPos - 1 ) && hb_objHasMsg( stack.pPos - 1, "++" ) ) hb_vmOperatorCallUnary( stack.pPos - 1, "++" ); else { PHB_ITEM pResult = hb_errRT_BASE_Subst( EG_ARG, 1086, NULL, "++" ); if( pResult ) { hb_stackPop(); hb_vmPush( pResult ); hb_itemRelease( pResult ); } } } void hb_vmInstring( void ) { PHB_ITEM pItem1 = stack.pPos - 2; PHB_ITEM pItem2 = stack.pPos - 1; if( IS_STRING( pItem1 ) && IS_STRING( pItem2 ) ) { int iResult = hb_strAt( pItem1->item.asString.value, pItem1->item.asString.length, pItem2->item.asString.value, pItem2->item.asString.length ); hb_stackPop(); hb_stackPop(); hb_vmPushLogical( iResult == 0 ? FALSE : TRUE ); } else if( IS_OBJECT( pItem1 ) && hb_objHasMsg( pItem1, "$" ) ) hb_vmOperatorCall( pItem1, pItem2, "$" ); else { PHB_ITEM pResult = hb_errRT_BASE_Subst( EG_ARG, 1109, NULL, "$" ); if( pResult ) { hb_stackPop(); hb_stackPop(); hb_vmPush( pResult ); hb_itemRelease( pResult ); } } } void hb_vmLess( void ) { if( IS_STRING( stack.pPos - 2 ) && IS_STRING( stack.pPos - 1 ) ) { int i = hb_itemStrCmp( stack.pPos - 2, stack.pPos - 1, FALSE ); hb_stackPop(); hb_stackPop(); hb_vmPushLogical( i < 0 ); } else if( IS_NUMERIC( stack.pPos - 1 ) && IS_NUMERIC( stack.pPos - 2 ) ) { double dNumber2 = hb_vmPopNumber(); double dNumber1 = hb_vmPopNumber(); hb_vmPushLogical( dNumber1 < dNumber2 ); } else if( IS_DATE( stack.pPos - 1 ) && IS_DATE( stack.pPos - 2 ) ) { LONG lDate2 = hb_vmPopDate(); LONG lDate1 = hb_vmPopDate(); hb_vmPushLogical( lDate1 < lDate2 ); } else if( IS_LOGICAL( stack.pPos - 1 ) && IS_LOGICAL( stack.pPos - 2 ) ) { BOOL bLogical2 = hb_vmPopLogical(); BOOL bLogical1 = hb_vmPopLogical(); hb_vmPushLogical( bLogical1 < bLogical2 ); } else if( IS_OBJECT( stack.pPos - 2 ) && hb_objHasMsg( stack.pPos - 2, "<" ) ) hb_vmOperatorCall( stack.pPos - 2, stack.pPos - 1, "<" ); else if( ( stack.pPos - 2 )->type != ( stack.pPos - 1 )->type ) { PHB_ITEM pResult = hb_errRT_BASE_Subst( EG_ARG, 1073, NULL, "<" ); if( pResult ) { hb_stackPop(); hb_vmPush( pResult ); hb_itemRelease( pResult ); } } } void hb_vmLessEqual( void ) { if( IS_STRING( stack.pPos - 2 ) && IS_STRING( stack.pPos - 1 ) ) { int i = hb_itemStrCmp( stack.pPos - 2, stack.pPos - 1, FALSE ); hb_stackPop(); hb_stackPop(); hb_vmPushLogical( i <= 0 ); } else if( IS_NUMERIC( stack.pPos - 1 ) && IS_NUMERIC( stack.pPos - 2 ) ) { double dNumber2 = hb_vmPopNumber(); double dNumber1 = hb_vmPopNumber(); hb_vmPushLogical( dNumber1 <= dNumber2 ); } else if( IS_DATE( stack.pPos - 1 ) && IS_DATE( stack.pPos - 2 ) ) { LONG lDate2 = hb_vmPopDate(); LONG lDate1 = hb_vmPopDate(); hb_vmPushLogical( lDate1 <= lDate2 ); } else if( IS_LOGICAL( stack.pPos - 1 ) && IS_LOGICAL( stack.pPos - 2 ) ) { BOOL bLogical2 = hb_vmPopLogical(); BOOL bLogical1 = hb_vmPopLogical(); hb_vmPushLogical( bLogical1 <= bLogical2 ); } else if( IS_OBJECT( stack.pPos - 2 ) && hb_objHasMsg( stack.pPos - 2, "<=" ) ) hb_vmOperatorCall( stack.pPos - 2, stack.pPos - 1, "<=" ); else if( ( stack.pPos - 2 )->type != ( stack.pPos - 1 )->type ) { PHB_ITEM pResult = hb_errRT_BASE_Subst( EG_ARG, 1074, NULL, "<=" ); if( pResult ) { hb_stackPop(); hb_vmPush( pResult ); hb_itemRelease( pResult ); } } } void hb_vmLocalName( USHORT uiLocal, char * szLocalName ) /* locals and parameters index and name information for the debugger */ { HB_SYMBOL_UNUSED( uiLocal ); HB_SYMBOL_UNUSED( szLocalName ); } void hb_vmMessage( PHB_SYMB pSymMsg ) /* sends a message to an object */ { hb_itemCopy( stack.pPos, stack.pPos - 1 ); /* moves the object forward */ hb_itemClear( stack.pPos - 1 ); ( stack.pPos - 1 )->type = IT_SYMBOL; ( stack.pPos - 1 )->item.asSymbol.value = pSymMsg; ( stack.pPos - 1 )->item.asSymbol.stackbase = ( stack.pPos - 1 ) - stack.pItems; hb_stackPush(); HB_DEBUG2( "Message: %s\n", pSymMsg->szName ); } /* NOTE: Clipper is resetting the number width on a negate. */ void hb_vmNegate( void ) { if( IS_INTEGER( stack.pPos - 1 ) ) { ( stack.pPos - 1 )->item.asInteger.value = -( stack.pPos - 1 )->item.asInteger.value; ( stack.pPos - 1 )->item.asInteger.length = 10; } else if( IS_LONG( stack.pPos - 1 ) ) { ( stack.pPos - 1 )->item.asLong.value = -( stack.pPos - 1 )->item.asLong.value; ( stack.pPos - 1 )->item.asLong.length = 10; } else if( IS_DOUBLE( stack.pPos - 1 ) ) { ( stack.pPos - 1 )->item.asDouble.value = -( stack.pPos - 1 )->item.asDouble.value; ( stack.pPos - 1 )->item.asDouble.length = ( stack.pPos - 1 )->item.asDouble.value >= 10000000000.0 ? 20 : 10; } else { PHB_ITEM pResult = hb_errRT_BASE_Subst( EG_ARG, 1080, NULL, "-" ); if( pResult ) { hb_stackPop(); hb_vmPush( pResult ); hb_itemRelease( pResult ); } } } void hb_vmNot( void ) { PHB_ITEM pItem = stack.pPos - 1; if( IS_LOGICAL( pItem ) ) pItem->item.asLogical.value = ! pItem->item.asLogical.value; else { PHB_ITEM pResult = hb_errRT_BASE_Subst( EG_ARG, 1077, NULL, ".NOT." ); if( pResult ) { hb_stackPop(); hb_vmPush( pResult ); hb_itemRelease( pResult ); } } } void hb_vmNotEqual( void ) { PHB_ITEM pItem2 = stack.pPos - 1; PHB_ITEM pItem1 = stack.pPos - 2; if( IS_NIL( pItem1 ) && IS_NIL( pItem2 ) ) { hb_stackDec(); hb_stackDec(); hb_vmPushLogical( FALSE ); } else if( IS_NIL( pItem1 ) || IS_NIL( pItem2 ) ) { hb_stackPop(); hb_stackPop(); hb_vmPushLogical( TRUE ); } else if( IS_STRING( pItem1 ) && IS_STRING( pItem2 ) ) { int i = hb_itemStrCmp( pItem1, pItem2, FALSE ); hb_stackPop(); hb_stackPop(); hb_vmPushLogical( i != 0 ); } else if( IS_NUMERIC( pItem1 ) && IS_NUMERIC( pItem2 ) ) { int iDec; hb_vmPushLogical( hb_vmPopDouble( &iDec ) != hb_vmPopDouble( &iDec ) ); } else if( IS_DATE( pItem1 ) && IS_DATE( pItem2 ) ) hb_vmPushLogical( hb_vmPopDate() != hb_vmPopDate() ); else if( IS_LOGICAL( pItem1 ) && IS_LOGICAL( pItem2 ) ) hb_vmPushLogical( hb_vmPopLogical() != hb_vmPopLogical() ); else if( IS_OBJECT( pItem1 ) && hb_objHasMsg( pItem1, "!=" ) ) hb_vmOperatorCall( pItem1, pItem2, "!=" ); else if( IS_OBJECT( pItem1 ) && hb_objHasMsg( pItem1, "<>" ) ) hb_vmOperatorCall( pItem1, pItem2, "<>" ); else if( IS_OBJECT( pItem1 ) && hb_objHasMsg( pItem1, "#" ) ) hb_vmOperatorCall( pItem1, pItem2, "#" ); else if( pItem1->type != pItem2->type ) { PHB_ITEM pResult = hb_errRT_BASE_Subst( EG_ARG, 1072, NULL, "<>" ); if( pResult ) { hb_stackPop(); hb_stackPop(); hb_vmPush( pResult ); hb_itemRelease( pResult ); } } else { hb_stackPop(); hb_stackPop(); hb_vmPushLogical( TRUE ); } } void hb_vmMinus( void ) { PHB_ITEM pItem2 = stack.pPos - 1; PHB_ITEM pItem1 = stack.pPos - 2; if( IS_NUMERIC( pItem2 ) && IS_NUMERIC( pItem1 ) ) { int iDec2, iDec1; double dNumber2 = hb_vmPopDouble( &iDec2 ); double dNumber1 = hb_vmPopDouble( &iDec1 ); hb_vmPushNumber( dNumber1 - dNumber2, ( iDec1 > iDec2 ) ? iDec1 : iDec2 ); } else if( IS_DATE( pItem2 ) && IS_DATE( pItem1 ) ) { long lDate2 = hb_vmPopDate(); long lDate1 = hb_vmPopDate(); hb_vmPushLong( lDate1 - lDate2 ); } else if( IS_NUMERIC( pItem2 ) && IS_DATE( pItem1 ) ) { double dNumber2 = hb_vmPopNumber(); long lDate1 = hb_vmPopDate(); hb_vmPushDate( lDate1 - dNumber2 ); } else if( IS_STRING( pItem1 ) && IS_STRING( pItem2 ) ) { if( ( double ) ( ( double ) pItem1->item.asString.length + ( double ) pItem2->item.asString.length ) < ( double ) ULONG_MAX ) { ULONG ulLen = pItem1->item.asString.length; pItem1->item.asString.value = ( char * ) hb_xrealloc( pItem1->item.asString.value, pItem1->item.asString.length + pItem2->item.asString.length + 1 ); pItem1->item.asString.length += pItem2->item.asString.length; while( ulLen && pItem1->item.asString.value[ ulLen - 1 ] == ' ' ) ulLen--; hb_xmemcpy( pItem1->item.asString.value + ulLen, pItem2->item.asString.value, pItem2->item.asString.length ); ulLen += pItem2->item.asString.length; hb_xmemset( pItem1->item.asString.value + ulLen, ' ', pItem1->item.asString.length - ulLen ); pItem1->item.asString.value[ pItem1->item.asString.length ] = '\0'; if( pItem2->item.asString.value ) { hb_xfree( pItem2->item.asString.value ); pItem2->item.asString.value = NULL; } hb_stackPop(); return; } else hb_errRT_BASE( EG_STROVERFLOW, 1210, NULL, "-" ); } else if( IS_OBJECT( stack.pPos - 2 ) && hb_objHasMsg( stack.pPos - 2, "-" ) ) hb_vmOperatorCall( pItem1, pItem2, "-" ); else { PHB_ITEM pResult = hb_errRT_BASE_Subst( EG_ARG, 1082, NULL, "-" ); if( pResult ) { hb_stackPop(); hb_stackPop(); hb_vmPush( pResult ); hb_itemRelease( pResult ); } } } void hb_vmModuleName( char * szModuleName ) /* PRG and function name information for the debugger */ { s_bDebugging = TRUE; s_bDebugShowLines = FALSE; hb_vmPushSymbol( hb_dynsymFind( "__DBGENTRY" )->pSymbol ); hb_vmPushNil(); hb_vmPushString( szModuleName, strlen( szModuleName ) ); hb_vmDo( 1 ); s_bDebugShowLines = TRUE; } void hb_vmModulus( void ) { if( IS_NUMERIC( stack.pPos - 1 ) && IS_NUMERIC( stack.pPos - 2 ) ) { int iDec1, iDec2; double d2 = hb_vmPopDouble( &iDec2 ); double d1 = hb_vmPopDouble( &iDec1 ); if( d2 == 0.0 ) { PHB_ITEM pResult = hb_errRT_BASE_Subst( EG_ZERODIV, 1341, NULL, "%" ); if( pResult ) { hb_vmPush( pResult ); hb_itemRelease( pResult ); } } else /* NOTE: Clipper always returns the result of modulus with the SET number of decimal places. */ hb_vmPushNumber( fmod( d1, d2 ), hb_set.HB_SET_DECIMALS ); } else { PHB_ITEM pResult = hb_errRT_BASE_Subst( EG_ARG, 1085, NULL, "%" ); if( pResult ) { hb_stackPop(); hb_stackPop(); hb_vmPush( pResult ); hb_itemRelease( pResult ); } } } void hb_vmMult( void ) { if( IS_NUMERIC( stack.pPos - 1 ) && IS_NUMERIC( stack.pPos - 2 ) ) { int iDec2, iDec1; double d2 = hb_vmPopDouble( &iDec2 ); double d1 = hb_vmPopDouble( &iDec1 ); hb_vmPushNumber( d1 * d2, iDec1 + iDec2 ); } else { PHB_ITEM pResult = hb_errRT_BASE_Subst( EG_ARG, 1083, NULL, "*" ); if( pResult ) { hb_stackPop(); hb_stackPop(); hb_vmPush( pResult ); hb_itemRelease( pResult ); } } } void hb_vmOperatorCall( PHB_ITEM pObjItem, PHB_ITEM pMsgItem, char * szSymbol ) { /* NOTE: There is no need to test if specified symbol exists. It is checked * by the caller (if IS_OBJECT() && HAS_METHOD() ) */ HB_ITEM ItemMsg; ItemMsg.type = IT_SYMBOL; ItemMsg.item.asSymbol.value = hb_dynsymFind( szSymbol )->pSymbol; ItemMsg.item.asSymbol.stackbase = stack.pPos - stack.pItems; hb_itemClear( &stack.Return ); /* clear return value */ hb_vmPush( &ItemMsg ); hb_vmPush( pObjItem ); /* Push object */ hb_vmPush( pMsgItem ); /* Push argument */ hb_vmDo( 1 ); /* pop passed arguments - only one here */ hb_stackPop(); /* pMsgItem */ /* Push return value on the stack * NOTE: for performance reason we don't pop the second argument. * We can replace the second argument with the return value. */ hb_itemClear( pObjItem ); hb_itemCopy( pObjItem, &stack.Return ); } void hb_vmOperatorCallUnary( PHB_ITEM pObjItem, char * szSymbol ) { /* NOTE: There is no need to test if specified symbol exists. It is checked * by the caller (if IS_OBJECT() && HAS_METHOD() ) */ HB_ITEM ItemMsg; ItemMsg.type = IT_SYMBOL; ItemMsg.item.asSymbol.value = hb_dynsymFind( szSymbol )->pSymbol; ItemMsg.item.asSymbol.stackbase = stack.pPos - stack.pItems; hb_itemClear( &stack.Return ); /* clear return value */ hb_vmPush( &ItemMsg ); hb_vmPush( pObjItem ); /* Push object */ hb_vmDo( 0 ); /* Pop passed argument. * NOTE: for performance reason we don't pop it and we don't push the * return value. We can replace the last element with the new value. */ hb_itemClear( pObjItem ); hb_itemCopy( pObjItem, &stack.Return ); } void hb_vmOr( void ) { PHB_ITEM pItem2 = stack.pPos - 1; PHB_ITEM pItem1 = stack.pPos - 2; if( IS_LOGICAL( pItem1 ) && IS_LOGICAL( pItem2 ) ) { BOOL bResult = pItem1->item.asLogical.value || pItem2->item.asLogical.value; hb_stackDec(); hb_stackDec(); hb_vmPushLogical( bResult ); } else hb_errRT_BASE( EG_ARG, 1079, NULL, ".OR." ); } void hb_vmPlus( void ) { PHB_ITEM pItem1 = stack.pPos - 2; PHB_ITEM pItem2 = stack.pPos - 1; if( IS_STRING( pItem1 ) && IS_STRING( pItem2 ) ) { if( ( double ) ( ( double ) pItem1->item.asString.length + ( double ) pItem2->item.asString.length ) < ( double ) ULONG_MAX ) { pItem1->item.asString.value = ( char * ) hb_xrealloc( pItem1->item.asString.value, pItem1->item.asString.length + pItem2->item.asString.length + 1 ); hb_xmemcpy( pItem1->item.asString.value+ pItem1->item.asString.length, pItem2->item.asString.value, pItem2->item.asString.length ); pItem1->item.asString.length += pItem2->item.asString.length; pItem1->item.asString.value[ pItem1->item.asString.length ] = '\0'; if( pItem2->item.asString.value ) { hb_xfree( pItem2->item.asString.value ); pItem2->item.asString.value = NULL; } hb_stackPop(); return; } else hb_errRT_BASE( EG_STROVERFLOW, 1209, NULL, "+" ); } else if( IS_NUMERIC( pItem1 ) && IS_NUMERIC( pItem2 ) ) { int iDec2, iDec1; double dNumber1 = hb_vmPopDouble( &iDec2 ); double dNumber2 = hb_vmPopDouble( &iDec1 ); hb_vmPushNumber( dNumber1 + dNumber2, ( iDec1 > iDec2 ) ? iDec1 : iDec2 ); } else if( IS_DATE( pItem1 ) && IS_DATE( pItem2 ) ) { long lDate1 = hb_vmPopDate(); long lDate2 = hb_vmPopDate(); hb_vmPushDate( lDate1 + lDate2 ); } else if( IS_DATE( pItem1 ) && IS_NUMERIC( pItem2 ) ) { int iDec; double dNumber2 = hb_vmPopDouble( &iDec ); long lDate1 = hb_vmPopDate(); hb_vmPushDate( lDate1 + dNumber2 ); } else if( IS_OBJECT( pItem1 ) && hb_objHasMsg( pItem1, "+" ) ) hb_vmOperatorCall( pItem1, pItem2, "+" ); else { PHB_ITEM pResult = hb_errRT_BASE_Subst( EG_ARG, 1081, NULL, "+" ); if( pResult ) { hb_stackPop(); hb_stackPop(); hb_vmPush( pResult ); hb_itemRelease( pResult ); } } HB_DEBUG( "Plus\n" ); } long hb_vmPopDate( void ) { hb_stackDec(); if( IS_DATE( stack.pPos ) ) { stack.pPos->type = IT_NIL; return stack.pPos->item.asDate.value; } else { hb_errInternal( 9999, "Incorrect item value trying to Pop a date value", NULL, NULL ); return 0; /* To suppress compiler warning */ } } /* Pops the item from the eval stack and uses it to select the current * workarea */ static void hb_vmPopAlias( void ) { hb_stackDec(); hb_vmSelectWorkarea( stack.pPos ); HB_DEBUG( "hb_vmPopAlias\n" ); } /* Pops the alias to use it to select a workarea and next pops a value * into given field */ static void hb_vmPopAliasedField( PHB_SYMB pSym ) { int iCurrArea = hb_rddGetCurrentWorkAreaNumber(); if( hb_vmSelectWorkarea( stack.pPos - 1 ) == SUCCESS ) hb_rddPutFieldValue( stack.pPos - 2, pSym ); hb_rddSelectWorkAreaNumber( iCurrArea ); hb_stackDec(); /* alias - it was cleared in hb_vmSelectWorkarea */ hb_stackPop(); /* field value */ HB_DEBUG( "hb_vmPopAliasedField\n" ); } double hb_vmPopDouble( int * piDec ) { double dNumber; hb_stackDec(); switch( stack.pPos->type & ~IT_BYREF ) { case IT_INTEGER: dNumber = ( double ) stack.pPos->item.asInteger.value; *piDec = 0; break; case IT_LONG: dNumber = ( double ) stack.pPos->item.asLong.value; *piDec = 0; break; case IT_DOUBLE: dNumber = stack.pPos->item.asDouble.value; *piDec = stack.pPos->item.asDouble.decimal; break; default: hb_errInternal( 9999, "Incorrect item type trying to Pop a double", NULL, NULL ); break; } stack.pPos->type = IT_NIL; HB_DEBUG( "hb_vmPopDouble\n" ); return dNumber; } /* Pops a value from the eval stack and uses it to set a new value * of the given field */ static void hb_vmPopField( PHB_SYMB pSym ) { hb_rddPutFieldValue( stack.pPos - 1, pSym ); hb_stackPop(); HB_DEBUG( "hb_vmPopField\n" ); } void hb_vmPopLocal( SHORT iLocal ) { hb_stackDec(); if( iLocal >= 0 ) { /* local variable or local parameter */ PHB_ITEM pLocal = stack.pBase + 1 + iLocal; if( IS_BYREF( pLocal ) ) hb_itemCopy( hb_itemUnRef( pLocal ), stack.pPos ); else hb_itemCopy( pLocal, stack.pPos ); } else /* local variable referenced in a codeblock * stack.pBase+1 points to a codeblock that is currently evaluated */ hb_itemCopy( hb_codeblockGetVar( stack.pBase + 1, iLocal ), stack.pPos ); hb_itemClear( stack.pPos ); HB_DEBUG( "hb_vmPopLocal\n" ); } BOOL hb_vmPopLogical( void ) { if( IS_LOGICAL( stack.pPos - 1 ) ) { hb_stackDec(); stack.pPos->type = IT_NIL; return stack.pPos->item.asLogical.value; } else { hb_errRT_BASE( EG_ARG, 1066, NULL, hb_langDGetErrorDesc( EG_CONDITION ) ); return FALSE; } } double hb_vmPopNumber( void ) { PHB_ITEM pItem = stack.pPos - 1; double dNumber; hb_stackDec(); switch( pItem->type & ~IT_BYREF ) { case IT_INTEGER: dNumber = ( double ) pItem->item.asInteger.value; break; case IT_LONG: dNumber = ( double ) pItem->item.asLong.value; break; case IT_DOUBLE: dNumber = pItem->item.asDouble.value; break; default: hb_errInternal( 9999, "Incorrect item on the stack trying to pop a number", NULL, NULL ); break; } stack.pPos->type = IT_NIL; HB_DEBUG( "hb_vmPopNumber\n" ); return dNumber; } void hb_vmPopStatic( USHORT uiStatic ) { PHB_ITEM pStatic; hb_stackDec(); pStatic = aStatics.item.asArray.value->pItems + stack.iStatics + uiStatic - 1; if( IS_BYREF( pStatic ) ) hb_itemCopy( hb_itemUnRef( pStatic ), stack.pPos ); else hb_itemCopy( pStatic, stack.pPos ); hb_itemClear( stack.pPos ); HB_DEBUG( "hb_vmPopStatic\n" ); } void hb_vmPower( void ) { if( IS_NUMERIC( stack.pPos - 1 ) && IS_NUMERIC( stack.pPos - 2 ) ) { int iDec1, iDec2; double d2 = hb_vmPopDouble( &iDec2 ); double d1 = hb_vmPopDouble( &iDec1 ); /* NOTE: Clipper always returns the result of power with the SET number of decimal places. */ hb_vmPushNumber( pow( d1, d2 ), hb_set.HB_SET_DECIMALS ); } else { PHB_ITEM pResult = hb_errRT_BASE_Subst( EG_ARG, 1088, NULL, "^" ); if( pResult ) { hb_stackPop(); hb_stackPop(); hb_vmPush( pResult ); hb_itemRelease( pResult ); } } } /* pushes current workarea number on the eval stack */ static void hb_vmPushAlias( void ) { stack.pPos->type = IT_INTEGER; stack.pPos->item.asInteger.value = hb_rddGetCurrentWorkAreaNumber(); stack.pPos->item.asInteger.length = 10; hb_stackPush(); HB_DEBUG( "hb_vmPushAlias\n" ); } /* It pops the last item from the stack to use it to select a workarea * and next pushes the value of a given field * (for performance reason it replaces alias value with field value) */ static void hb_vmPushAliasedField( PHB_SYMB pSym ) { PHB_ITEM pAlias = stack.pPos - 1; int iCurrArea = hb_rddGetCurrentWorkAreaNumber(); /* NOTE: hb_vmSelecWorkarea clears passed item */ if( hb_vmSelectWorkarea( pAlias ) == SUCCESS ) hb_rddGetFieldValue( pAlias, pSym ); hb_rddSelectWorkAreaNumber( iCurrArea ); HB_DEBUG( "hb_vmPushAliasedField\n" ); } void hb_vmPushLogical( BOOL bValue ) { stack.pPos->type = IT_LOGICAL; stack.pPos->item.asLogical.value = bValue; hb_stackPush(); HB_DEBUG( "hb_vmPushLogical\n" ); } /* It pushes the current value of the given field onto the eval stack */ static void hb_vmPushField( PHB_SYMB pSym ) { hb_rddGetFieldValue( stack.pPos, pSym ); hb_stackPush(); HB_DEBUG( "hb_vmPushField\n" ); } void hb_vmPushLocal( SHORT iLocal ) { if( iLocal >= 0 ) { PHB_ITEM pLocal; /* local variable or local parameter */ pLocal = stack.pBase + 1 + iLocal; if( IS_BYREF( pLocal ) ) hb_itemCopy( stack.pPos, hb_itemUnRef( pLocal ) ); else hb_itemCopy( stack.pPos, pLocal ); } else /* local variable referenced in a codeblock * stack.pBase+1 points to a codeblock that is currently evaluated */ hb_itemCopy( stack.pPos, hb_codeblockGetVar( stack.pBase + 1, ( LONG ) iLocal ) ); hb_stackPush(); HB_DEBUG2( "hb_vmPushLocal %i\n", iLocal ); } void hb_vmPushLocalByRef( SHORT iLocal ) { stack.pPos->type = IT_BYREF; /* we store its stack offset instead of a pointer to support a dynamic stack */ stack.pPos->item.asRefer.value = iLocal; stack.pPos->item.asRefer.offset = stack.pBase - stack.pItems +1; stack.pPos->item.asRefer.itemsbase = &stack.pItems; hb_stackPush(); HB_DEBUG2( "hb_vmPushLocalByRef %i\n", iLocal ); } void hb_vmPushNil( void ) { stack.pPos->type = IT_NIL; hb_stackPush(); HB_DEBUG( "hb_vmPushNil\n" ); } void hb_vmPushNumber( double dNumber, int iDec ) { if( iDec ) hb_vmPushDouble( dNumber, iDec ); else if( SHRT_MIN <= dNumber && dNumber <= SHRT_MAX ) hb_vmPushInteger( dNumber ); else if( LONG_MIN <= dNumber && dNumber <= LONG_MAX ) hb_vmPushLong( dNumber ); else hb_vmPushDouble( dNumber, hb_set.HB_SET_DECIMALS ); } void hb_vmPushStatic( USHORT uiStatic ) { PHB_ITEM pStatic = aStatics.item.asArray.value->pItems + stack.iStatics + uiStatic - 1; if( IS_BYREF( pStatic ) ) hb_itemCopy( stack.pPos, hb_itemUnRef( pStatic ) ); else hb_itemCopy( stack.pPos, pStatic ); hb_stackPush(); HB_DEBUG2( "hb_vmPushStatic %i\n", uiStatic ); } void hb_vmPushStaticByRef( USHORT uiStatic ) { stack.pPos->type = IT_BYREF; /* we store the offset instead of a pointer to support a dynamic stack */ stack.pPos->item.asRefer.value = uiStatic - 1; stack.pPos->item.asRefer.offset = stack.iStatics; stack.pPos->item.asRefer.itemsbase = &aStatics.item.asArray.value->pItems; hb_stackPush(); HB_DEBUG2( "hb_vmPushStaticByRef %i\n", uiStatic ); } void hb_vmPushString( char * szText, ULONG length ) { char * szTemp = ( char * ) hb_xgrab( length + 1 ); hb_xmemcpy( szTemp, szText, length ); szTemp[ length ] = '\0'; stack.pPos->type = IT_STRING; stack.pPos->item.asString.length = length; stack.pPos->item.asString.value = szTemp; hb_stackPush(); HB_DEBUG( "hb_vmPushString\n" ); } void hb_vmPushSymbol( PHB_SYMB pSym ) { stack.pPos->type = IT_SYMBOL; stack.pPos->item.asSymbol.value = pSym; stack.pPos->item.asSymbol.stackbase = stack.pPos - stack.pItems; hb_stackPush(); HB_DEBUG2( "hb_vmPushSymbol: %s\n", pSym->szName ); } void hb_vmPush( PHB_ITEM pItem ) { hb_itemCopy( stack.pPos, pItem ); hb_stackPush(); HB_DEBUG( "hb_vmPush\n" ); } /* +0 -> HB_P_PUSHBLOCK * +1 +2 -> size of codeblock * +3 +4 -> number of expected parameters * +5 +6 -> number of referenced local variables * +7 -> start of table with referenced local variables */ void hb_vmPushBlock( BYTE * pCode, PHB_SYMB pSymbols ) { USHORT uiLocals; stack.pPos->type = IT_BLOCK; uiLocals = pCode[ 5 ] + ( pCode[ 6 ] * 256 ); stack.pPos->item.asBlock.value = hb_codeblockNew( pCode + 7 + uiLocals * 2, /* pcode buffer */ uiLocals, /* number of referenced local variables */ ( USHORT * ) ( pCode + 7 ), /* table with referenced local variables */ pSymbols ); /* store the statics base of function where the codeblock was defined */ stack.pPos->item.asBlock.statics = stack.iStatics; /* store the number of expected parameters */ stack.pPos->item.asBlock.paramcnt = pCode[ 3 ] + ( pCode[ 4 ] * 256 ); /* store the line number where the codeblock was defined */ stack.pPos->item.asBlock.lineno = stack.pBase->item.asSymbol.lineno; hb_stackPush(); HB_DEBUG( "hb_vmPushBlock\n" ); } void hb_vmPushDate( LONG lDate ) { stack.pPos->type = IT_DATE; stack.pPos->item.asDate.value = lDate; hb_stackPush(); HB_DEBUG( "hb_vmPushDate\n" ); } void hb_vmPushDouble( double dNumber, int iDec ) { stack.pPos->type = IT_DOUBLE; stack.pPos->item.asDouble.value = dNumber; stack.pPos->item.asDouble.length = ( dNumber > 10000000000.0 ) ? 20 : 10; stack.pPos->item.asDouble.decimal = ( iDec > 9 ) ? 9 : iDec; hb_stackPush(); HB_DEBUG( "hb_vmPushDouble\n" ); } void hb_vmPushInteger( int iNumber ) { stack.pPos->type = IT_INTEGER; stack.pPos->item.asInteger.value = iNumber; stack.pPos->item.asInteger.length = 10; hb_stackPush(); HB_DEBUG( "hb_vmPushInteger\n" ); } void hb_vmPushLong( long lNumber ) { stack.pPos->type = IT_LONG; stack.pPos->item.asLong.value = lNumber; stack.pPos->item.asLong.length = 10; hb_stackPush(); HB_DEBUG( "hb_vmPushLong\n" ); } void hb_vmRetValue( void ) { hb_stackDec(); /* make the last item visible */ hb_itemCopy( &stack.Return, stack.pPos ); /* copy it */ hb_itemClear( stack.pPos ); /* now clear it */ HB_DEBUG( "hb_vmRetValue\n" ); } void hb_stackPop( void ) { if( --stack.pPos < stack.pItems ) hb_errInternal( 9999, "Stack underflow", NULL, NULL ); if( stack.pPos->type != IT_NIL ) hb_itemClear( stack.pPos ); } void hb_stackDec( void ) { if( --stack.pPos < stack.pItems ) hb_errInternal( 9999, "Stack underflow", NULL, NULL ); } void hb_stackFree( void ) { hb_xfree( stack.pItems ); HB_DEBUG( "hb_stackFree\n" ); } void hb_stackPush( void ) { LONG CurrIndex; /* index of current top item */ LONG TopIndex; /* index of the topmost possible item */ CurrIndex = stack.pPos - stack.pItems; TopIndex = stack.wItems - 1; /* enough room for another item ? */ if( !( TopIndex > CurrIndex ) ) { LONG BaseIndex; /* index of stack base */ BaseIndex = stack.pBase - stack.pItems; /* no, make more headroom: */ /* hb_stackDispLocal(); */ stack.pItems = ( PHB_ITEM ) hb_xrealloc( stack.pItems, sizeof( HB_ITEM ) * ( stack.wItems + STACK_EXPANDHB_ITEMS ) ); /* fix possibly invalid pointers: */ stack.pPos = stack.pItems + CurrIndex; stack.pBase = stack.pItems + BaseIndex; stack.wItems += STACK_EXPANDHB_ITEMS; /* hb_stackDispLocal(); */ } /* now, push it: */ stack.pPos++; stack.pPos->type = IT_NIL; } void hb_stackInit( void ) { stack.pItems = ( PHB_ITEM ) hb_xgrab( sizeof( HB_ITEM ) * STACK_INITHB_ITEMS ); stack.pBase = stack.pItems; stack.pPos = stack.pItems; /* points to the first stack item */ stack.wItems = STACK_INITHB_ITEMS; HB_DEBUG( "hb_stackInit\n" ); } /* NOTE: DEBUG function */ void hb_stackDispLocal( void ) { PHB_ITEM pBase; printf( hb_consoleGetNewLine() ); printf( "Virtual Machine Stack Dump at %s(%i):", stack.pBase->item.asSymbol.value->szName, stack.pBase->item.asSymbol.lineno ); printf( hb_consoleGetNewLine() ); printf( "--------------------------" ); for( pBase = stack.pBase; pBase <= stack.pPos; pBase++ ) { printf( hb_consoleGetNewLine() ); switch( hb_itemType( pBase ) ) { case IT_NIL: printf( "NIL " ); break; case IT_ARRAY: if( hb_arrayIsObject( pBase ) ) printf( "OBJECT = %s ", hb_objGetClsName( pBase ) ); else printf( "ARRAY " ); break; case IT_BLOCK: printf( "BLOCK " ); break; case IT_DATE: printf( "DATE = \"%s\" ", hb_itemGetDS( pBase, stack.szDate ) ); break; case IT_DOUBLE: printf( "DOUBLE = %f ", hb_itemGetND( pBase ) ); break; case IT_LOGICAL: printf( "LOGICAL = %s ", hb_itemGetL( pBase ) ? ".T." : ".F." ); break; case IT_LONG: printf( "LONG = %lu ", hb_itemGetNL( pBase ) ); break; case IT_INTEGER: printf( "INTEGER = %i ", hb_itemGetNI( pBase ) ); break; case IT_STRING: printf( "STRING = \"%s\" ", hb_itemGetCPtr( pBase ) ); break; case IT_SYMBOL: printf( "SYMBOL = %s ", pBase->item.asSymbol.value->szName ); break; default: printf( "UNKNOWN = TYPE %i ", hb_itemType( pBase ) ); break; } } } void hb_stackDispCall( void ) { PHB_ITEM pBase = stack.pBase; while( pBase != stack.pItems ) { pBase = stack.pItems + pBase->item.asSymbol.stackbase; if( ( pBase + 1 )->type == IT_ARRAY ) printf( "Called from %s:%s(%i)", hb_objGetClsName( pBase + 1 ), pBase->item.asSymbol.value->szName, pBase->item.asSymbol.lineno ); else printf( "Called from %s(%i)", pBase->item.asSymbol.value->szName, pBase->item.asSymbol.lineno ); printf( hb_consoleGetNewLine() ); } } void hb_vmSFrame( PHB_SYMB pSym ) /* sets the statics frame for a function */ { /* _INITSTATICS is now the statics frame. Statics() changed it! */ stack.iStatics = ( int ) pSym->pFunPtr; /* pSym is { "$_INITSTATICS", FS_INIT | FS_EXIT, _INITSTATICS } for each PRG */ HB_DEBUG( "SFrame\n" ); } void hb_vmStatics( PHB_SYMB pSym ) /* initializes the global aStatics array or redimensionates it */ { USHORT uiStatics = hb_vmPopNumber(); if( IS_NIL( &aStatics ) ) { pSym->pFunPtr = NULL; /* statics frame for this PRG */ hb_arrayNew( &aStatics, uiStatics ); } else { pSym->pFunPtr = ( PHB_FUNC )hb_arrayLen( &aStatics ); hb_arraySize( &aStatics, hb_arrayLen( &aStatics ) + uiStatics ); } HB_DEBUG2( "Statics %li\n", hb_arrayLen( &aStatics ) ); } static ERRCODE hb_vmSelectWorkarea( PHB_ITEM pAlias ) { ERRCODE bSuccess = SUCCESS; /* NOTE: Clipper doesn't generate an error if an workarea specified * as numeric value cannot be selected */ switch( pAlias->type & ~IT_BYREF ) { case IT_INTEGER: /* Alias was used as integer value, for example: 4->field * or it was saved on the stack using hb_vmPushAlias() * or was evaluated from an expression, (nWorkArea)->field */ hb_rddSelectWorkAreaNumber( pAlias->item.asInteger.value ); pAlias->type = IT_NIL; break; case IT_LONG: /* Alias was evaluated from an expression, (nWorkArea)->field */ hb_rddSelectWorkAreaNumber( pAlias->item.asLong.value ); pAlias->type = IT_NIL; break; case IT_DOUBLE: /* Alias was evaluated from an expression, (nWorkArea)->field */ hb_rddSelectWorkAreaNumber( pAlias->item.asDouble.value ); pAlias->type = IT_NIL; break; case IT_SYMBOL: /* Alias was specified using alias identifier, for example: al->field */ bSuccess = hb_rddSelectWorkAreaSymbol( pAlias->item.asSymbol.value ); pAlias->type = IT_NIL; break; case IT_STRING: /* Alias was evaluated from an expression, for example: (cVar)->field */ bSuccess = hb_rddSelectWorkAreaAlias( pAlias->item.asString.value ); hb_itemClear( pAlias ); break; default: { PHB_ITEM pSubstVal = hb_errRT_BASE_Subst( EG_ARG, 1065, NULL, "&" ); if( pSubstVal ) bSuccess = hb_vmSelectWorkarea( pSubstVal ); else bSuccess = FAILURE; hb_itemClear( pAlias ); } break; } return bSuccess; } /* Swaps two last items on the eval stack - the last item after swaping * is popped as current workarea number */ static void hb_vmSwapAlias( void ) { HB_ITEM_PTR pItem = stack.pPos - 1; HB_ITEM_PTR pWorkArea = stack.pPos - 2; hb_vmSelectWorkarea( pWorkArea ); memcpy( pWorkArea, pItem, sizeof( HB_ITEM ) ); pItem->type = IT_NIL; hb_stackDec(); HB_DEBUG( "hb_vmSwapAlias\n" ); } void hb_vmProcessSymbols( PHB_SYMB pModuleSymbols, USHORT uiModuleSymbols ) /* module symbols initialization */ { PSYMBOLS pNewSymbols; USHORT ui; #ifdef HARBOUR_OBJ_GENERATION static BOOL bObjChecked = FALSE; if( ! bObjChecked ) { bObjChecked = TRUE; hb_vmProcessObjSymbols(); /* to asure Harbour OBJ symbols are processed first */ } #endif pNewSymbols = ( PSYMBOLS ) hb_xgrab( sizeof( SYMBOLS ) ); pNewSymbols->pModuleSymbols = pModuleSymbols; pNewSymbols->uiModuleSymbols = uiModuleSymbols; pNewSymbols->pNext = NULL; pNewSymbols->hScope = 0; if( s_pSymbols == NULL ) s_pSymbols = pNewSymbols; else { PSYMBOLS pLastSymbols; pLastSymbols = s_pSymbols; while( pLastSymbols->pNext ) /* locates the latest processed group of symbols */ pLastSymbols = pLastSymbols->pNext; pLastSymbols->pNext = pNewSymbols; } for( ui = 0; ui < uiModuleSymbols; ui++ ) /* register each public symbol on the dynamic symbol table */ { SYMBOLSCOPE hSymScope; hSymScope = ( pModuleSymbols + ui )->cScope; pNewSymbols->hScope |= hSymScope; if( ( ! s_pSymStart ) && ( hSymScope == FS_PUBLIC ) ) s_pSymStart = pModuleSymbols + ui; /* first public defined symbol to start execution */ if( ( hSymScope == FS_PUBLIC ) || ( hSymScope & ( FS_MESSAGE | FS_MEMVAR ) ) ) hb_dynsymNew( pModuleSymbols + ui ); } } #ifdef HARBOUR_OBJ_GENERATION static void hb_vmProcessObjSymbols( void ) { static BOOL bDone = FALSE; if( ! bDone ) { POBJSYMBOLS pObjSymbols = ( POBJSYMBOLS ) &HB_FIRSTSYMBOL; while( pObjSymbols < ( POBJSYMBOLS ) ( &HB_LASTSYMBOL - 1 ) ) { hb_vmProcessSymbols( pObjSymbols->pSymbols, pObjSymbols->wSymbols ); pObjSymbols++; } bDone = TRUE; } } #endif static void hb_vmReleaseLocalSymbols( void ) { while( s_pSymbols ) { PSYMBOLS pDestroy; pDestroy = s_pSymbols; s_pSymbols = s_pSymbols->pNext; hb_xfree( pDestroy ); } } /* This calls all _INITSTATICS functions defined in the application. * We are using a special symbol's scope ( FS_INIT | FS_EXIT ) to mark * this function. These two bits cannot be marked at the same * time for normal user defined functions. */ static void hb_vmDoInitStatics( void ) { PSYMBOLS pLastSymbols = s_pSymbols; do { if( ( pLastSymbols->hScope & ( FS_INIT | FS_EXIT ) ) == ( FS_INIT | FS_EXIT ) ) { USHORT ui; for( ui = 0; ui < pLastSymbols->uiModuleSymbols; ui++ ) { SYMBOLSCOPE scope = ( pLastSymbols->pModuleSymbols + ui )->cScope & ( FS_EXIT | FS_INIT ); if( scope == ( FS_INIT | FS_EXIT ) ) { /* _INITSTATICS procedure cannot call any function and it * cannot use any local variable then it is safe to call * this procedure directly * hb_vmPushSymbol( pLastSymbols->pModuleSymbols + ui ); * hb_vmPushNil(); * hb_vmDo( 0 ); */ if( ( pLastSymbols->pModuleSymbols + ui )->pFunPtr ) ( pLastSymbols->pModuleSymbols + ui )->pFunPtr(); } } } pLastSymbols = pLastSymbols->pNext; } while( pLastSymbols ); } static void hb_vmDoExitFunctions( void ) { PSYMBOLS pLastSymbols = s_pSymbols; do { /* only if module contains some EXIT functions */ if( pLastSymbols->hScope & FS_EXIT ) { USHORT ui; for( ui = 0; ui < pLastSymbols->uiModuleSymbols; ui++ ) { SYMBOLSCOPE scope = ( pLastSymbols->pModuleSymbols + ui )->cScope & ( FS_EXIT | FS_INIT ); if( scope == FS_EXIT ) { hb_vmPushSymbol( pLastSymbols->pModuleSymbols + ui ); hb_vmPushNil(); hb_vmDo( 0 ); if( s_uiActionRequest ) /* QUIT or BREAK was issued - stop processing */ return; } } } pLastSymbols = pLastSymbols->pNext; } while( pLastSymbols ); } static void hb_vmDoInitFunctions( void ) { PSYMBOLS pLastSymbols = s_pSymbols; do { /* only if module contains some INIT functions */ if( pLastSymbols->hScope & FS_INIT ) { USHORT ui; for( ui = 0; ui < pLastSymbols->uiModuleSymbols; ui++ ) { SYMBOLSCOPE scope = ( pLastSymbols->pModuleSymbols + ui )->cScope & ( FS_EXIT | FS_INIT ); if( scope == FS_INIT ) { int argc = hb_cmdargARGC(); char ** argv = hb_cmdargARGV(); int i; int iArgCount; hb_vmPushSymbol( pLastSymbols->pModuleSymbols + ui ); hb_vmPushNil(); iArgCount = 0; for( i = 1; i < argc; i++ ) /* places application parameters on the stack */ { /* Filter out any parameters beginning with //, like //INFO */ if( ! hb_cmdargIsInternal( argv[ i ] ) ) { hb_vmPushString( argv[ i ], strlen( argv[ i ] ) ); iArgCount++; } } hb_vmDo( iArgCount ); } } } pLastSymbols = pLastSymbols->pNext; } while( pLastSymbols ); } /* NOTE: We should make sure that these get linked. */ /* Don't make this function static, because it's not called from this file. */ void hb_vmForceLink( void ) { HB_SYSINIT(); } /* ----------------------------- */ /* TODO: Put these to /source/rtl/?.c */ HARBOUR HB_LEN( void ) { if( hb_pcount() == 1 ) { PHB_ITEM pItem = hb_param( 1, IT_ANY ); /* NOTE: pItem cannot be NULL here */ switch( pItem->type ) { case IT_ARRAY: hb_retnl( hb_arrayLen( pItem ) ); break; case IT_STRING: hb_retnl( hb_itemGetCLen( pItem ) ); break; default: { PHB_ITEM pResult = hb_errRT_BASE_Subst( EG_ARG, 1111, NULL, "LEN" ); if( pResult ) { hb_itemReturn( pResult ); hb_itemRelease( pResult ); } } } } else hb_errRT_BASE( EG_ARGCOUNT, 3000, NULL, "LEN" ); /* NOTE: Clipper catches this at compile time! */ } HARBOUR HB_EMPTY( void ) { if( hb_pcount() == 1 ) { PHB_ITEM pItem = hb_param( 1, IT_ANY ); /* NOTE: pItem cannot be NULL here */ switch( pItem->type & ~IT_BYREF ) { case IT_ARRAY: hb_retl( hb_arrayLen( pItem ) == 0 ); break; case IT_STRING: hb_retl( hb_strEmpty( hb_itemGetCPtr( pItem ), hb_itemGetCLen( pItem ) ) ); break; case IT_INTEGER: hb_retl( hb_itemGetNI( pItem ) == 0 ); break; case IT_LONG: hb_retl( hb_itemGetNL( pItem ) == 0 ); break; case IT_DOUBLE: hb_retl( hb_itemGetND( pItem ) == 0.0 ); break; case IT_DATE: /* NOTE: This is correct ! Get the date as long value. */ hb_retl( hb_itemGetNL( pItem ) == 0 ); break; case IT_LOGICAL: hb_retl( ! hb_itemGetL( pItem ) ); break; case IT_BLOCK: hb_retl( FALSE ); break; default: hb_retl( TRUE ); break; } } else hb_errRT_BASE( EG_ARGCOUNT, 3000, NULL, "EMPTY" ); /* NOTE: Clipper catches this at compile time! */ } HARBOUR HB_VALTYPE( void ) { if( hb_pcount() == 1 ) { PHB_ITEM pItem = hb_param( 1, IT_ANY ); /* NOTE: pItem cannot be NULL here */ switch( pItem->type & ~IT_BYREF ) { case IT_ARRAY: hb_retc( hb_arrayIsObject( pItem ) ? "O" : "A" ); break; case IT_BLOCK: hb_retc( "B" ); break; case IT_DATE: hb_retc( "D" ); break; case IT_LOGICAL: hb_retc( "L" ); break; case IT_INTEGER: case IT_LONG: case IT_DOUBLE: hb_retc( "N" ); break; case IT_STRING: hb_retc( "C" ); break; case IT_NIL: default: hb_retc( "U" ); break; } } else hb_errRT_BASE( EG_ARGCOUNT, 3000, NULL, "VALTYPE" ); /* NOTE: Clipper catches this at compile time! */ } HARBOUR HB_TYPE( void ) { /* TODO: Implement this. */ } /* INCOMPATIBILITY: The Clipper NG states that WORD() will only work when used in CALL commands parameter list, otherwise it will return NIL, in Harbour it will work anywhere. */ HARBOUR HB_WORD( void ) { if( hb_pcount() == 1 ) { if( ISNUM( 1 ) ) hb_retni( hb_parni( 1 ) ); else hb_errRT_BASE( EG_ARG, 1091, NULL, "WORD" ); } else hb_errRT_BASE( EG_ARGCOUNT, 3000, NULL, "WORD" ); } HARBOUR HB_PROCNAME( void ) { int iLevel = hb_parni( 1 ) + 1; /* we are already inside ProcName() */ PHB_ITEM pBase = stack.pBase; while( ( iLevel-- > 0 ) && pBase != stack.pItems ) pBase = stack.pItems + pBase->item.asSymbol.stackbase; if( ( iLevel == -1 ) ) { if( ( pBase + 1 )->type == IT_ARRAY ) /* it is a method name */ { char * szProcName; szProcName = ( char * ) hb_xgrab( strlen( hb_objGetClsName( pBase + 1 ) ) + 1 + strlen( pBase->item.asSymbol.value->szName ) + 1 ); strcpy( szProcName, hb_objGetClsName( pBase + 1 ) ); strcat( szProcName, ":" ); strcat( szProcName, pBase->item.asSymbol.value->szName ); hb_retc( szProcName ); hb_xfree( ( void * ) szProcName ); } else hb_retc( pBase->item.asSymbol.value->szName ); } else hb_retc( "" ); } HARBOUR HB_PROCLINE( void ) { int iLevel = hb_parni( 1 ) + 1; /* we are already inside ProcName() */ PHB_ITEM pBase = stack.pBase; while( ( iLevel-- > 0 ) && pBase != stack.pItems ) pBase = stack.pItems + pBase->item.asSymbol.stackbase; if( iLevel == -1 ) hb_retni( pBase->item.asSymbol.lineno ); else hb_retni( 0 ); } void hb_vmRequestQuit( void ) { s_uiActionRequest = HB_QUIT_REQUESTED; } HARBOUR HB___QUIT( void ) { hb_vmRequestQuit(); } HARBOUR HB_ERRORLEVEL( void ) { hb_retni( s_byErrorLevel ); /* NOTE: This should be ISNUM( 1 ), but it's sort of a Clipper bug that it accepts other types also and consider them zero. */ if( hb_pcount() >= 1 ) /* Only replace the error level if a parameter was passed */ s_byErrorLevel = hb_parni( 1 ); } HARBOUR HB_PCOUNT( void ) { if( hb_pcount() == 0 ) { /* Skip current function */ PHB_ITEM pBase = stack.pItems + stack.pBase->item.asSymbol.stackbase; hb_retni( pBase->item.asSymbol.paramcnt ); } else hb_errRT_BASE( EG_ARGCOUNT, 3000, NULL, "PCOUNT" ); /* NOTE: Clipper catches this at compile time! */ } HARBOUR HB_PVALUE( void ) /* PValue( ) */ { USHORT uiParam = hb_parni( 1 ); /* Get parameter */ PHB_ITEM pBase = stack.pItems + stack.pBase->item.asSymbol.stackbase; /* Skip function + self */ if( uiParam && uiParam <= pBase->item.asSymbol.paramcnt ) /* Valid number */ hb_itemReturn( pBase + 1 + uiParam ); else hb_errRT_BASE( EG_ARG, 3011, NULL, "PVALUE" ); } void hb_vmRequestBreak( PHB_ITEM pItem ) { if( s_lRecoverBase ) { if( pItem ) hb_itemCopy( stack.pItems + s_lRecoverBase + HB_RECOVER_VALUE, pItem ); s_uiActionRequest = HB_BREAK_REQUESTED; } else s_uiActionRequest = HB_QUIT_REQUESTED; } USHORT hb_vmRequestQuery( void ) { return s_uiActionRequest; } /* NOTE: This function should normally have a parameter count check. But since in Harbour we cannot distinguish between BREAK() function and the BREAK statement, because both generate a BREAK() function call on the pcode level, we should drop the checking. */ HARBOUR HB_BREAK( void ) { hb_vmRequestBreak( hb_param( 1, IT_ANY ) ); } void hb_vmRequestCancel( void ) { if( hb_set.HB_SET_CANCEL ) { printf( hb_consoleGetNewLine() ); printf( "Cancelled at: %s (%i)", stack.pBase->item.asSymbol.value->szName, stack.pBase->item.asSymbol.lineno ); printf( hb_consoleGetNewLine() ); s_uiActionRequest = HB_QUIT_REQUESTED; } } /* NOTE: This is an internal undocumented Clipper function, which will try to call the function HELP() if it's defined. This is the default SetKey() handler for the F1 key. */ HARBOUR HB___XHELP( void ) { PHB_DYNS pDynSym = hb_dynsymFind( "HELP" ); if( pDynSym ) { hb_vmPushSymbol( pDynSym->pSymbol ); hb_vmPushNil(); hb_vmDo( 0 ); /* NOTE: Leave the return value as it is. */ } }