2280 lines
61 KiB
C
2280 lines
61 KiB
C
/*
|
|
* $Id$
|
|
*/
|
|
|
|
/*
|
|
* The Harbour virtual machine
|
|
*/
|
|
|
|
/* Please note the following comments we may use everywhere
|
|
TODO: something should be added here
|
|
TOFIX: something needs to be fixed
|
|
OBSOLETE: something could be removed from here
|
|
QUESTION: I had some questions at this point but I could not get an answer
|
|
OPT: something is commented out to improve performance
|
|
As an example: */
|
|
|
|
/* TODO: Add all the TODO comments. */
|
|
|
|
#include <limits.h>
|
|
#include <malloc.h>
|
|
#include <math.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "hbsetup.h" /* main configuration file */
|
|
#include <extend.h>
|
|
#include <errorapi.h>
|
|
#include <pcode.h>
|
|
#include <set.h>
|
|
|
|
HARBOUR HB_ERRORSYS( void );
|
|
HARBOUR HB_ERRORNEW( void );
|
|
HARBOUR HB_EVAL( void ); /* Evaluates a codeblock from Harbour */
|
|
HARBOUR HB_MAIN( void ); /* fixed entry point by now */
|
|
HARBOUR HB_VALTYPE( void ); /* returns a string description of a value */
|
|
|
|
/* extern void InitializeConsole(void); This prototype is needed by C++ compilers */
|
|
extern void InitSymbolTable(void); /* This prototype is needed by C++ compilers */
|
|
|
|
/* currently supported virtual machine actions */
|
|
void And( void ); /* performs the logical AND on the latest two values, removes them and leaves result on the stack */
|
|
void ArrayAt( void ); /* pushes an array element to the stack, removing the array and the index from the stack */
|
|
void ArrayPut( void ); /* sets an array value and pushes the value on to the stack */
|
|
void Dec( void ); /* decrements the latest numeric value on the stack */
|
|
void Div( void ); /* divides the latest two values on the stack, removes them and leaves the result */
|
|
void Do( WORD WParams ); /* invoke the virtual machine */
|
|
HARBOUR DoBlock( void ); /* executes a codeblock */
|
|
void Duplicate( void ); /* duplicates the latest value on the stack */
|
|
void DuplTwo( void ); /* duplicates the latest two value on the stack */
|
|
void EndBlock( void ); /* copies the last codeblock pushed value into the return value */
|
|
void Equal( BOOL bExact ); /* checks if the two latest values on the stack are equal, removes both and leaves result */
|
|
void ForTest( void ); /* test for end condition of for */
|
|
void Frame( BYTE bLocals, BYTE bParams ); /* increases the stack pointer for the amount of locals and params suplied */
|
|
void FuncPtr( void ); /* pushes a function address pointer. Removes the symbol from the satck */
|
|
void Function( WORD wParams ); /* executes a function saving its result */
|
|
void GenArray( WORD wElements ); /* generates a wElements Array and fills it from the stack values */
|
|
void Greater( void ); /* checks if the latest - 1 value is greater than the latest, removes both and leaves result */
|
|
void GreaterEqual( void ); /* checks if the latest - 1 value is greater than or equal the latest, removes both and leaves result */
|
|
void Inc( void ); /* increment the latest numeric value on the stack */
|
|
void Instring( void ); /* check whether string 1 is contained in string 2 */
|
|
void ItemCopy( PHB_ITEM pDest, PHB_ITEM pSource ); /* copies an item to one place to another respecting its containts */
|
|
void Less( void ); /* checks if the latest - 1 value is less than the latest, removes both and leaves result */
|
|
void LessEqual( void ); /* checks if the latest - 1 value is less than or equal the latest, removes both and leaves result */
|
|
void Line( WORD wLine ); /* keeps track of the currently processed PRG line */
|
|
void Message( PSYMBOL pSymMsg ); /* sends a message to an object */
|
|
void Minus( void ); /* substracts the latest two values on the stack, removes them and leaves the result */
|
|
void Modulus( void ); /* calculates the modulus of latest two values on the stack, removes them and leaves the result */
|
|
void Mult( void ); /* multiplies the latest two values on the stack, removes them and leaves the result */
|
|
void Negate( void ); /* negates (-) the latest value on the stack */
|
|
void Not( void ); /* changes the latest logical value on the stack */
|
|
void NotEqual( void ); /* checks if the two latest values on the stack are not equal, removes both and leaves result */
|
|
void OperatorCall( PHB_ITEM, PHB_ITEM, char *); /* call an overloaded operator */
|
|
void Or( void ); /* performs the logical OR on the latest two values, removes them and leaves result on the stack */
|
|
void Plus( void ); /* sums the latest two values on the stack, removes them and leaves the result */
|
|
long PopDate( void ); /* pops the stack latest value and returns its date value as a LONG */
|
|
void PopDefStat( WORD wStatic ); /* pops the stack latest value onto a static as default init */
|
|
double PopDouble( WORD * ); /* pops the stack latest value and returns its double numeric format value */
|
|
void PopLocal( SHORT wLocal ); /* pops the stack latest value onto a local */
|
|
int PopLogical( void ); /* pops the stack latest value and returns its logical value */
|
|
double PopNumber( void ); /* pops the stack latest value and returns its numeric value */
|
|
void PopStatic( WORD wStatic ); /* pops the stack latest value onto a static */
|
|
void Power( void ); /* power the latest two values on the stack, removes them and leaves the result */
|
|
void Push( PHB_ITEM pItem ); /* pushes a generic item onto the stack */
|
|
void PushBlock( BYTE * pCode, WORD wSize, WORD wParam, PSYMBOL pSymbols ); /* creates a codeblock */
|
|
void PushDate( LONG lDate ); /* pushes a long date onto the stack */
|
|
void PushDouble( double lNumber, WORD wDec ); /* pushes a double number onto the stack */
|
|
void PushLocal( SHORT iLocal ); /* pushes the containts of a local onto the stack */
|
|
void PushLocalByRef( SHORT iLocal ); /* pushes a local by refrence onto the stack */
|
|
void PushLogical( int iTrueFalse ); /* pushes a logical value onto the stack */
|
|
void PushLong( long lNumber ); /* pushes a long number onto the stack */
|
|
void PushNil( void ); /* in this case it places nil at self */
|
|
void PushNumber( double dNumber, WORD wDec ); /* pushes a number on to the stack and decides if it is integer, long or double */
|
|
void PushStatic( WORD wStatic ); /* pushes the containts of a static onto the stack */
|
|
void PushString( char * szText, ULONG length ); /* pushes a string on to the stack */
|
|
void PushSymbol( PSYMBOL pSym ); /* pushes a function pointer onto the stack */
|
|
void PushInteger( int iNumber ); /* pushes a integer number onto the stack */
|
|
void RetValue( void ); /* pops the latest stack value into stack.Return */
|
|
void SFrame( PSYMBOL pSym ); /* sets the statics frame for a function */
|
|
void Statics( PSYMBOL pSym ); /* increases the the global statics array to hold a PRG statics */
|
|
|
|
typedef struct _SYMBOLS
|
|
{
|
|
PSYMBOL pModuleSymbols; /* pointer to a one module own symbol table */
|
|
WORD wModuleSymbols; /* number of symbols on that table */
|
|
struct _SYMBOLS * pNext;/* pointer to the next SYMBOLS structure */
|
|
} SYMBOLS, * PSYMBOLS; /* structure to keep track of all modules symbol tables */
|
|
|
|
void ProcessSymbols( PSYMBOL pSymbols, WORD wSymbols ); /* statics symbols initialization */
|
|
void DoInitFunctions( int argc, char * argv[] ); /* executes all defined PRGs INIT functions */
|
|
void DoExitFunctions( void ); /* executes all defined PRGs EXIT functions */
|
|
void LogSymbols( void ); /* displays all dynamic symbols */
|
|
void ReleaseClasses( void ); /* releases all defined classes */
|
|
void ReleaseLocalSymbols( void ); /* releases the memory of the local symbols linked list */
|
|
void ReleaseDynamicSymbols( void ); /* releases the memory of the dynamic symbol table */
|
|
|
|
/* stack management functions */
|
|
void StackPop( void ); /* pops an item from the stack */
|
|
void StackFree( void ); /* releases all memory used by the stack */
|
|
void StackPush( void ); /* pushes an item on to the stack */
|
|
void StackInit( void ); /* initializes the stack */
|
|
void StackShow( void ); /* show the types of the items on the stack for debugging purposes */
|
|
|
|
HB_CODEBLOCK_PTR CodeblockNew( BYTE *, WORD, PSYMBOL, int, WORD );
|
|
void CodeblockDelete( HB_CODEBLOCK_PTR );
|
|
PHB_ITEM CodeblockGetVar( PHB_ITEM, LONG );
|
|
void CodeblockEvaluate( HB_CODEBLOCK_PTR );
|
|
void CodeblockCopy( PHB_ITEM, PHB_ITEM );
|
|
void CodeblockDetach( HB_CODEBLOCK_PTR );
|
|
|
|
void InitSymbolTable( void ); /* initialization of runtime support symbols */
|
|
|
|
static void ForceLink( void );
|
|
|
|
ULONG hb_isMessage( PHB_ITEM, char * );
|
|
ULONG hb_strAt( char *, long, char *, long );
|
|
PHB_ITEM hb_itemReturn( PHB_ITEM );
|
|
|
|
#define STACK_INITHB_ITEMS 100
|
|
#define STACK_EXPANDHB_ITEMS 20
|
|
|
|
extern ULONG ulMemoryBlocks; /* memory blocks used */
|
|
extern ULONG ulMemoryMaxBlocks; /* maximum number of used memory blocks */
|
|
extern ULONG ulMemoryConsumed; /* memory size consumed */
|
|
extern ULONG ulMemoryMaxConsumed; /* memory max size consumed */
|
|
|
|
#ifdef HARBOUR_OBJ_GENERATION
|
|
void ProcessObjSymbols ( void ); /* process Harbour generated OBJ symbols */
|
|
|
|
typedef struct
|
|
{
|
|
WORD wSymbols; /* module local symbol table symbols amount */
|
|
PSYMBOL 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
|
|
|
|
STACK stack;
|
|
int iHB_DEBUG = 0; /* if 1 traces the virtual machine activity */
|
|
SYMBOL symEval = { "__EVAL", FS_PUBLIC, DoBlock, 0 }; /* symbol to evaluate codeblocks */
|
|
PSYMBOL pSymStart; /* start symbol of the application. MAIN() is not required */
|
|
HB_ITEM aStatics; /* Harbour array to hold all application statics variables */
|
|
HB_ITEM errorBlock; /* errorblock */
|
|
PSYMBOLS pSymbols = 0; /* to hold a linked list of all different modules symbol tables */
|
|
BOOL bQuit = FALSE; /* inmediately exit the application */
|
|
BYTE bErrorLevel = 0; /* application exit errorlevel */
|
|
|
|
#define HB_DEBUG( x ) if( iHB_DEBUG ) printf( x )
|
|
#define HB_DEBUG2( x, y ) if( iHB_DEBUG ) printf( x, y )
|
|
|
|
/* application entry point */
|
|
|
|
#ifdef WINDOWS
|
|
int __stdcall WinMain( long hIns, long hPrev, char * szCmds, int iCmdShow )
|
|
{
|
|
int argc = 1;
|
|
char * argv[] = { "Test" };
|
|
#else
|
|
int main( int argc, char * argv[] )
|
|
{
|
|
#endif
|
|
int i;
|
|
void ( * DontDiscardForceLink )( void ) = &ForceLink;
|
|
|
|
if( ! DontDiscardForceLink ) /* just to avoid warnings from the C compiler */
|
|
iHB_DEBUG += ( int ) DontDiscardForceLink; /* just to avoid warnings from the C compiler */
|
|
|
|
HB_DEBUG( "main\n" );
|
|
aStatics.type = IT_NIL;
|
|
errorBlock.type = IT_NIL;
|
|
stack.Return.type = IT_NIL;
|
|
StackInit();
|
|
NewDynSym( &symEval ); /* initialize dynamic symbol for evaluating codeblocks */
|
|
hb_setInitialize(); /* initialize Sets */
|
|
/* InitializeConsole(); initialize Console */
|
|
#ifdef HARBOUR_OBJ_GENERATION
|
|
ProcessObjSymbols(); /* initialize Harbour generated OBJs symbols */
|
|
#endif
|
|
|
|
/* Initialize symbol table with runtime support functions */
|
|
InitSymbolTable();
|
|
|
|
DoInitFunctions( argc, argv ); /* process defined INIT functions */
|
|
|
|
#ifdef HARBOUR_START_PROCEDURE
|
|
{
|
|
PDYNSYM pDynSym =FindDynSym( HARBOUR_START_PROCEDURE );
|
|
if( pDynSym )
|
|
pSymStart =pDynSym->pSymbol;
|
|
else
|
|
{
|
|
printf( "Can\'t locate the starting procedure: \'%s\'", HARBOUR_START_PROCEDURE );
|
|
exit(1);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
PushSymbol( pSymStart ); /* pushes first FS_PUBLIC defined symbol to the stack */
|
|
|
|
PushNil(); /* places NIL at self */
|
|
|
|
for( i = 1; i < argc; i++ ) /* places application parameters on the stack */
|
|
PushString( argv[ i ], strlen( argv[ i ] ) );
|
|
|
|
Do( argc - 1 ); /* invoke it with number of supplied parameters */
|
|
|
|
DoExitFunctions(); /* process defined EXIT functions */
|
|
|
|
ItemRelease( &stack.Return );
|
|
hb_arrayRelease( &aStatics );
|
|
ItemRelease( &errorBlock );
|
|
ReleaseClasses();
|
|
ReleaseLocalSymbols(); /* releases the local modules linked list */
|
|
ReleaseDynamicSymbols(); /* releases the dynamic symbol table */
|
|
hb_setRelease(); /* releases Sets */
|
|
StackFree();
|
|
/* LogSymbols(); */
|
|
HB_DEBUG( "Done!\n" );
|
|
|
|
if( ulMemoryBlocks )
|
|
{
|
|
printf( "\n\ntotal memory blocks allocated: %lu\n", ulMemoryMaxBlocks );
|
|
printf( "memory maximum size consumed: %ld\n", ulMemoryMaxConsumed );
|
|
printf( "memory blocks not released: %ld\n", ulMemoryBlocks );
|
|
printf( "memory size not released: %ld\n", ulMemoryConsumed );
|
|
}
|
|
|
|
return bErrorLevel;
|
|
}
|
|
|
|
void VirtualMachine( PBYTE pCode, PSYMBOL pSymbols )
|
|
{
|
|
BYTE bCode;
|
|
WORD w = 0, wParams, wSize;
|
|
|
|
HB_DEBUG( "VirtualMachine\n" );
|
|
|
|
while( ( bCode = pCode[ w ] ) != HB_P_ENDPROC && ! bQuit )
|
|
{
|
|
switch( bCode )
|
|
{
|
|
case HB_P_AND:
|
|
And();
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_ARRAYAT:
|
|
ArrayAt();
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_ARRAYPUT:
|
|
ArrayPut();
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_DEC:
|
|
Dec();
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_DIVIDE:
|
|
Div();
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_DO:
|
|
Do( pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ) );
|
|
w += 3;
|
|
break;
|
|
|
|
case HB_P_DUPLICATE:
|
|
Duplicate();
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_DUPLTWO:
|
|
DuplTwo();
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_ENDBLOCK:
|
|
EndBlock();
|
|
HB_DEBUG( "EndProc\n" );
|
|
return; /* end of a codeblock - stop evaluation */
|
|
|
|
case HB_P_EQUAL:
|
|
Equal( FALSE );
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_EXACTLYEQUAL:
|
|
Equal( TRUE );
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_FALSE:
|
|
PushLogical( 0 );
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_FORTEST:
|
|
ForTest();
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_FRAME:
|
|
Frame( pCode[ w + 1 ], pCode[ w + 2 ] );
|
|
w += 3;
|
|
break;
|
|
|
|
case HB_P_FUNCPTR:
|
|
FuncPtr();
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_FUNCTION:
|
|
Function( pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ) );
|
|
w += 3;
|
|
break;
|
|
|
|
case HB_P_GENARRAY:
|
|
GenArray( pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ) );
|
|
w += 3;
|
|
break;
|
|
|
|
case HB_P_GREATER:
|
|
Greater();
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_GREATEREQUAL:
|
|
GreaterEqual();
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_INC:
|
|
Inc();
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_INSTRING:
|
|
Instring();
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_JUMP:
|
|
wParams = pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 );
|
|
if( wParams )
|
|
w += wParams;
|
|
else
|
|
w += 3;
|
|
break;
|
|
|
|
case HB_P_JUMPFALSE:
|
|
if( ! PopLogical() )
|
|
w += pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 );
|
|
else
|
|
w += 3;
|
|
break;
|
|
|
|
case HB_P_JUMPTRUE:
|
|
if( PopLogical() )
|
|
w += pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 );
|
|
else
|
|
w += 3;
|
|
break;
|
|
|
|
case HB_P_LESS:
|
|
Less();
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_LESSEQUAL:
|
|
LessEqual();
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_LINE:
|
|
Line( pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ) );
|
|
w += 3;
|
|
break;
|
|
|
|
case HB_P_MESSAGE:
|
|
wParams = pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 );
|
|
Message( pSymbols + wParams );
|
|
w += 3;
|
|
break;
|
|
|
|
case HB_P_MINUS:
|
|
Minus();
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_MODULUS:
|
|
Modulus();
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_MULT:
|
|
Mult();
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_NEGATE:
|
|
Negate();
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_NOT:
|
|
Not();
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_NOTEQUAL:
|
|
NotEqual();
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_OR:
|
|
Or();
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_PLUS:
|
|
Plus();
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_POP:
|
|
StackPop();
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_POPDEFSTAT:
|
|
PopDefStat( pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ) );
|
|
w += 3;
|
|
break;
|
|
|
|
case HB_P_POPLOCAL:
|
|
PopLocal( pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ) );
|
|
w += 3;
|
|
break;
|
|
|
|
case HB_P_POPSTATIC:
|
|
PopStatic( pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ) );
|
|
w += 3;
|
|
break;
|
|
|
|
case HB_P_POWER:
|
|
Power();
|
|
w++;
|
|
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
|
|
*/
|
|
wSize = pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 );
|
|
PushBlock( pCode + w + 5,
|
|
wSize - 5,
|
|
pCode[ w + 3 ] + ( pCode[ w + 4 ] * 256 ),
|
|
pSymbols );
|
|
w += wSize;
|
|
break;
|
|
|
|
case HB_P_PUSHDOUBLE:
|
|
PushDouble( * ( double * ) ( &pCode[ w + 1 ] ), ( WORD ) * ( BYTE * ) &pCode[ w + 1 + sizeof( double ) ] );
|
|
w += 1 + sizeof( double ) + 1;
|
|
break;
|
|
|
|
case HB_P_PUSHINT:
|
|
PushInteger( pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ) );
|
|
w += 3;
|
|
break;
|
|
|
|
case HB_P_PUSHLOCAL:
|
|
PushLocal( pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ) );
|
|
w += 3;
|
|
break;
|
|
|
|
case HB_P_PUSHLOCALREF:
|
|
PushLocalByRef( pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ) );
|
|
w += 3;
|
|
break;
|
|
|
|
case HB_P_PUSHLONG:
|
|
PushLong( * ( long * ) ( &pCode[ w + 1 ] ) );
|
|
w += 5;
|
|
break;
|
|
|
|
case HB_P_PUSHNIL:
|
|
PushNil();
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_PUSHSELF:
|
|
Push( stack.pBase + 1 );
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_PUSHSTATIC:
|
|
PushStatic( pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 ) );
|
|
w += 3;
|
|
break;
|
|
|
|
case HB_P_PUSHSTR:
|
|
wSize =*( (WORD *) &( pCode[ w + 1 ] ) );
|
|
PushString( (char*)pCode + w + 3, wSize );
|
|
w += ( wSize + 3 );
|
|
break;
|
|
|
|
case HB_P_PUSHSYM:
|
|
wParams = pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 );
|
|
PushSymbol( pSymbols + wParams );
|
|
w += 3;
|
|
break;
|
|
|
|
case HB_P_RETVALUE:
|
|
RetValue();
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_SFRAME:
|
|
wParams = pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 );
|
|
SFrame( pSymbols + wParams );
|
|
w += 3;
|
|
break;
|
|
|
|
case HB_P_STATICS:
|
|
wParams = pCode[ w + 1 ] + ( pCode[ w + 2 ] * 256 );
|
|
Statics( pSymbols + wParams );
|
|
w += 3;
|
|
break;
|
|
|
|
case HB_P_TRUE:
|
|
PushLogical( 1 );
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_ZERO:
|
|
PushInteger( 0 );
|
|
w++;
|
|
break;
|
|
|
|
case HB_P_NOOP:
|
|
/* Intentionally do nothing */
|
|
break;
|
|
|
|
default:
|
|
printf( "The Harbour virtual machine can't run yet this PRG\n(unsuported pcode opcode: %i)\n", bCode );
|
|
printf( "Line number %i in %s", stack.pBase->item.asSymbol.lineno, stack.pBase->item.asSymbol.value->szName );
|
|
exit( 1 );
|
|
break;
|
|
}
|
|
}
|
|
HB_DEBUG( "EndProc\n" );
|
|
}
|
|
|
|
void And( void )
|
|
{
|
|
PHB_ITEM pItem2 = stack.pPos - 1;
|
|
PHB_ITEM pItem1 = stack.pPos - 2;
|
|
PHB_ITEM pError;
|
|
int iResult;
|
|
|
|
HB_DEBUG( "And\n" );
|
|
|
|
if( IS_LOGICAL( pItem1 ) && IS_LOGICAL( pItem2 ) )
|
|
{
|
|
iResult = pItem1->item.asLogical.value && pItem2->item.asLogical.value;
|
|
StackPop();
|
|
StackPop();
|
|
PushLogical( iResult );
|
|
}
|
|
else
|
|
{
|
|
pError = hb_errNew();
|
|
hb_errPutDescription( pError, "Argument error: conditional" );
|
|
hb_errLaunch( pError );
|
|
hb_errRelease( pError );
|
|
}
|
|
}
|
|
|
|
void ArrayAt( void )
|
|
{
|
|
double dIndex = PopNumber();
|
|
PHB_ITEM pArray = stack.pPos - 1;
|
|
HB_ITEM item;
|
|
|
|
hb_arrayGet( pArray, dIndex, &item );
|
|
StackPop();
|
|
|
|
ItemCopy( stack.pPos, &item );
|
|
ItemRelease( &item );
|
|
StackPush();
|
|
}
|
|
|
|
void ArrayPut( 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 ;
|
|
/* QUESTION: Should we raise an error here ? */
|
|
|
|
hb_arraySet( pArray, ulIndex, pValue );
|
|
ItemCopy( pArray, pValue ); /* places pValue at pArray position */
|
|
StackPop();
|
|
StackPop();
|
|
}
|
|
|
|
void Dec( void )
|
|
{
|
|
double dNumber;
|
|
LONG lDate;
|
|
WORD wDec;
|
|
|
|
if( IS_NUMERIC( stack.pPos - 1 ) )
|
|
{
|
|
dNumber = PopDouble( &wDec );
|
|
PushNumber( --dNumber, wDec );
|
|
}
|
|
else if( IS_DATE( stack.pPos - 1 ) )
|
|
{
|
|
lDate = PopDate();
|
|
PushDate( --lDate ); /* TOFIX: Dates should decreased other way */
|
|
}
|
|
/* TODO: Should we check other types here and issue an error ? */
|
|
}
|
|
|
|
void Div( void )
|
|
{
|
|
WORD wDec1, wDec2;
|
|
double d2 = PopDouble( &wDec2 );
|
|
double d1 = PopDouble( &wDec1 );
|
|
|
|
PushNumber( d1 / d2, (wDec1>wDec2) ? wDec1 : wDec2 );
|
|
}
|
|
|
|
void Do( WORD wParams )
|
|
{
|
|
PHB_ITEM pItem = stack.pPos - wParams - 2; /* procedure name */
|
|
PSYMBOL 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 - wParams - 1; /* NIL, OBJECT or BLOCK */
|
|
HARBOURFUNC pFunc;
|
|
int iStatics = stack.iStatics; /* Return iStatics position */
|
|
|
|
if( ! IS_SYMBOL( pItem ) )
|
|
{
|
|
StackShow();
|
|
printf( "symbol item expected as a base from Do()\n" );
|
|
exit( 1 );
|
|
}
|
|
|
|
if( ! ( ( IS_NIL( pSelf ) ) || ( IS_BLOCK( pSelf ) ) || ( IS_ARRAY( pSelf ) ) ) )
|
|
{
|
|
StackShow();
|
|
printf( "invalid symbol type for self from Do()\n" );
|
|
exit( 1 );
|
|
}
|
|
|
|
pItem->item.asSymbol.lineno = 0;
|
|
pItem->item.asSymbol.paramcnt = wParams;
|
|
stack.pBase = stack.pItems + pItem->item.asSymbol.stackbase;
|
|
pItem->item.asSymbol.stackbase = wStackBase;
|
|
|
|
HB_DEBUG2( "Do with %i params\n", wParams );
|
|
|
|
if( IS_OBJECT( pSelf ) ) /* are we sending a message to an object ? */
|
|
{
|
|
pFunc = GetMethod( pSelf, pSym );
|
|
if( ! pFunc )
|
|
{
|
|
printf( "error: message %s not implemented for class %s\n", pSym->szName,
|
|
hb_GetClassName( pSelf ) );
|
|
exit( 1 );
|
|
}
|
|
pFunc();
|
|
}
|
|
else /* it is a function */
|
|
{
|
|
pFunc = pSym->pFunPtr;
|
|
if( ! pFunc )
|
|
{
|
|
printf( "error: invalid function pointer (%s) from Do()\n", pSym->szName );
|
|
exit( 1 );
|
|
}
|
|
pFunc();
|
|
}
|
|
|
|
while( stack.pPos > stack.pItems + wItemIndex )
|
|
StackPop();
|
|
|
|
stack.pBase = stack.pItems + wStackBase;
|
|
stack.iStatics = iStatics;
|
|
}
|
|
|
|
HARBOUR DoBlock( void )
|
|
{
|
|
PHB_ITEM pBlock = stack.pBase + 1;
|
|
WORD wStackBase = stack.pBase - stack.pItems; /* as the stack memory block could change */
|
|
int iParam;
|
|
|
|
if( ! IS_BLOCK( pBlock ) )
|
|
{
|
|
printf( "error: codeblock expected from DoBlock()\n" );
|
|
exit( 1 );
|
|
}
|
|
|
|
/* Check for valid count of parameters */
|
|
iParam =pBlock->item.asBlock.paramcnt -hb_pcount();
|
|
/* add missing parameters */
|
|
while( iParam-- > 0 )
|
|
PushNil();
|
|
|
|
/* set pBaseCB to point to local variables of a function where
|
|
* the codeblock was defined
|
|
*/
|
|
stack.pBase->item.asSymbol.lineno =pBlock->item.asBlock.lineno;
|
|
|
|
CodeblockEvaluate( pBlock->item.asBlock.value );
|
|
|
|
/* restore stack pointers */
|
|
stack.pBase = stack.pItems + wStackBase;
|
|
|
|
HB_DEBUG( "End of DoBlock\n" );
|
|
}
|
|
|
|
void Duplicate( void )
|
|
{
|
|
ItemCopy( stack.pPos, stack.pPos - 1 );
|
|
StackPush();
|
|
}
|
|
|
|
void DuplTwo( void )
|
|
{
|
|
ItemCopy( stack.pPos, stack.pPos - 2 );
|
|
StackPush();
|
|
ItemCopy( stack.pPos, stack.pPos - 2 );
|
|
StackPush();
|
|
}
|
|
|
|
HARBOUR HB_EVAL( void )
|
|
{
|
|
PHB_ITEM pBlock = hb_param( 1, IT_BLOCK );
|
|
|
|
if( pBlock )
|
|
{
|
|
WORD w;
|
|
|
|
PushSymbol( &symEval );
|
|
Push( pBlock );
|
|
|
|
for( w = 2; w <= hb_pcount(); w++ )
|
|
Push( hb_param( w, IT_ANY ) );
|
|
|
|
Do( hb_pcount() - 1 );
|
|
}
|
|
else
|
|
{
|
|
printf( "Not a valid codeblock on eval\n" );
|
|
exit( 1 );
|
|
}
|
|
}
|
|
|
|
void EndBlock( void )
|
|
{
|
|
StackPop();
|
|
ItemCopy( &stack.Return, stack.pPos );
|
|
HB_DEBUG( "EndBlock\n" );
|
|
}
|
|
|
|
void Equal( BOOL bExact )
|
|
{
|
|
PHB_ITEM pItem2 = stack.pPos - 1;
|
|
PHB_ITEM pItem1 = stack.pPos - 2;
|
|
int i;
|
|
WORD wDec;
|
|
|
|
if( IS_NIL( pItem1 ) && IS_NIL( pItem2 ) )
|
|
{
|
|
StackPop();
|
|
StackPop();
|
|
PushLogical( 1 );
|
|
}
|
|
|
|
else if ( IS_NIL( pItem1 ) || IS_NIL( pItem2 ) )
|
|
{
|
|
StackPop();
|
|
StackPop();
|
|
PushLogical( 0 );
|
|
}
|
|
|
|
else if( IS_STRING( pItem1 ) && IS_STRING( pItem2 ) )
|
|
{
|
|
i = hb_itemStrCmp( pItem1, pItem2, bExact );
|
|
StackPop();
|
|
StackPop();
|
|
PushLogical( i == 0 );
|
|
}
|
|
|
|
else if( IS_LOGICAL( pItem1 ) && IS_LOGICAL( pItem2 ) )
|
|
PushLogical( PopLogical() == PopLogical() );
|
|
|
|
else if( IS_NUMERIC( pItem1 ) && IS_NUMERIC( pItem2 ) )
|
|
PushLogical( PopDouble(&wDec) == PopDouble(&wDec) );
|
|
|
|
else if( IS_OBJECT( pItem1 ) && hb_isMessage( pItem1, "==" ) )
|
|
OperatorCall( pItem1, pItem2, "==" );
|
|
|
|
else if( pItem1->type != pItem2->type )
|
|
{
|
|
printf( "types do not match on equal operation\n" );
|
|
exit( 1 );
|
|
}
|
|
|
|
else
|
|
PushLogical( 0 );
|
|
}
|
|
|
|
static void ForceLink( void ) /* To force the link of some functions */
|
|
{
|
|
HB_ERRORSYS();
|
|
HB_ERRORNEW();
|
|
}
|
|
|
|
void ForTest( void ) /* Test to check the end point of the FOR */
|
|
{
|
|
double dStep;
|
|
int iEqual;
|
|
|
|
if( IS_NUMERIC( stack.pPos - 1 ) )
|
|
{
|
|
WORD wDec;
|
|
|
|
dStep = PopDouble( &wDec );
|
|
|
|
if( dStep > 0 ) /* Positive loop. Use LESS */
|
|
Less();
|
|
else if( dStep < 0 ) /* Negative loop. Use GREATER */
|
|
Greater();
|
|
else
|
|
printf( "step of zero will cause endless loop" );
|
|
/* Add some break code or so... */
|
|
iEqual = PopLogical(); /* Logical should be on top of stack */
|
|
PushNumber( dStep, wDec ); /* Push the step expression back on the stack */
|
|
PushLogical( iEqual );
|
|
}
|
|
else
|
|
printf( "step expression should be numerical" );
|
|
}
|
|
|
|
void Frame( BYTE bLocals, BYTE bParams )
|
|
{
|
|
int i, iTotal = bLocals + bParams;
|
|
|
|
HB_DEBUG( "Frame\n" );
|
|
if( iTotal )
|
|
for( i = 0; i < ( iTotal - stack.pBase->item.asSymbol.paramcnt ); i++ )
|
|
PushNil();
|
|
}
|
|
|
|
void FuncPtr( void ) /* pushes a function address pointer. Removes the symbol from the satck */
|
|
{
|
|
PHB_ITEM pItem = stack.pPos - 1;
|
|
|
|
if( IS_SYMBOL( pItem ) )
|
|
{
|
|
StackPop();
|
|
PushLong( ( ULONG ) pItem->item.asSymbol.value->pFunPtr );
|
|
}
|
|
else
|
|
{
|
|
printf( "symbol item expected from FuncPtr()\n" );
|
|
exit( 1 );
|
|
}
|
|
}
|
|
|
|
void Function( WORD wParams )
|
|
{
|
|
Do( wParams );
|
|
ItemCopy( stack.pPos, &stack.Return );
|
|
StackPush();
|
|
}
|
|
|
|
void GenArray( WORD wElements ) /* generates a wElements Array and fills it from the stack values */
|
|
{
|
|
HB_ITEM itArray;
|
|
WORD w;
|
|
|
|
itArray.type = IT_NIL;
|
|
hb_arrayNew( &itArray, wElements );
|
|
for( w = 0; w < wElements; w++ )
|
|
ItemCopy( itArray.item.asArray.value->pItems + w,
|
|
stack.pPos - wElements + w );
|
|
|
|
for( w = 0; w < wElements; w++ )
|
|
StackPop();
|
|
|
|
ItemCopy( stack.pPos, &itArray );
|
|
ItemRelease( &itArray );
|
|
StackPush();
|
|
}
|
|
|
|
void Greater( void )
|
|
{
|
|
double dNumber1, dNumber2;
|
|
LONG lDate1, lDate2;
|
|
int i;
|
|
int iLogical1, iLogical2;
|
|
|
|
if( IS_STRING( stack.pPos - 2 ) && IS_STRING( stack.pPos - 1 ) )
|
|
{
|
|
i = hb_itemStrCmp( stack.pPos - 2, stack.pPos - 1, FALSE );
|
|
StackPop();
|
|
StackPop();
|
|
PushLogical( i > 0 );
|
|
}
|
|
|
|
else if( IS_NUMERIC( stack.pPos - 1 ) && IS_NUMERIC( stack.pPos - 2 ) )
|
|
{
|
|
dNumber2 = PopNumber();
|
|
dNumber1 = PopNumber();
|
|
PushLogical( dNumber1 > dNumber2 );
|
|
}
|
|
|
|
else if( IS_DATE( stack.pPos - 1 ) && IS_DATE( stack.pPos - 2 ) )
|
|
{
|
|
lDate2 = PopDate();
|
|
lDate1 = PopDate();
|
|
PushLogical( lDate1 > lDate2 );
|
|
}
|
|
|
|
else if( IS_LOGICAL( stack.pPos - 1 ) && IS_LOGICAL( stack.pPos -2 ) )
|
|
{
|
|
iLogical1 = PopLogical();
|
|
iLogical2 = PopLogical();
|
|
PushLogical( iLogical1 > iLogical2 );
|
|
}
|
|
|
|
else if( IS_OBJECT( stack.pPos - 2 ) &&
|
|
hb_isMessage( stack.pPos - 2, ">" ) )
|
|
OperatorCall( stack.pPos - 2, stack.pPos - 1, ">" );
|
|
|
|
else if( ( stack.pPos - 2 )->type != ( stack.pPos - 1 )->type )
|
|
{
|
|
printf( "types do not match on greater operation %d, %d\n", (stack.pPos - 2)->type, (stack.pPos - 1)->type );
|
|
exit( 1 );
|
|
}
|
|
}
|
|
|
|
void GreaterEqual( void )
|
|
{
|
|
double dNumber1, dNumber2;
|
|
LONG lDate1, lDate2;
|
|
int i;
|
|
int iLogical1, iLogical2;
|
|
|
|
if( IS_STRING( stack.pPos - 2 ) && IS_STRING( stack.pPos - 1 ) )
|
|
{
|
|
i = hb_itemStrCmp( stack.pPos - 2, stack.pPos - 1, FALSE );
|
|
StackPop();
|
|
StackPop();
|
|
PushLogical( i >= 0 );
|
|
}
|
|
|
|
else if( IS_NUMERIC( stack.pPos - 1 ) && IS_NUMERIC( stack.pPos - 2 ) )
|
|
{
|
|
dNumber2 = PopNumber();
|
|
dNumber1 = PopNumber();
|
|
PushLogical( dNumber1 >= dNumber2 );
|
|
}
|
|
|
|
else if( IS_DATE( stack.pPos - 1 ) && IS_DATE( stack.pPos - 2 ) )
|
|
{
|
|
lDate2 = PopDate();
|
|
lDate1 = PopDate();
|
|
PushLogical( lDate1 >= lDate2 );
|
|
}
|
|
|
|
else if( IS_LOGICAL( stack.pPos - 1 ) && IS_LOGICAL( stack.pPos -2 ) )
|
|
{
|
|
iLogical1 = PopLogical();
|
|
iLogical2 = PopLogical();
|
|
PushLogical( iLogical1 >= iLogical2 );
|
|
}
|
|
|
|
else if( IS_OBJECT( stack.pPos - 2 ) &&
|
|
hb_isMessage( stack.pPos - 2, ">=" ) )
|
|
OperatorCall( stack.pPos - 2, stack.pPos - 1, ">=" );
|
|
|
|
else if( ( stack.pPos - 2 )->type != ( stack.pPos - 1 )->type )
|
|
{
|
|
printf( "types do not match on greaterequal operation\n" );
|
|
exit( 1 );
|
|
}
|
|
}
|
|
|
|
void Inc( void )
|
|
{
|
|
double dNumber;
|
|
LONG lDate;
|
|
PHB_ITEM pError;
|
|
WORD wDec;
|
|
|
|
if( IS_NUMERIC( stack.pPos - 1 ) )
|
|
{
|
|
dNumber = PopDouble( &wDec );
|
|
PushNumber( ++dNumber, wDec );
|
|
}
|
|
else if( IS_DATE( stack.pPos - 1 ) )
|
|
{
|
|
lDate = PopDate();
|
|
PushDate( ++lDate );
|
|
}
|
|
else
|
|
{
|
|
pError = hb_errNew();
|
|
hb_errPutDescription( pError, "Error BASE/1086 Argument error: ++" );
|
|
hb_errLaunch( pError );
|
|
hb_errRelease( pError );
|
|
}
|
|
}
|
|
|
|
void ItemRelease( PHB_ITEM pItem )
|
|
{
|
|
if( IS_STRING( pItem ) )
|
|
{
|
|
if( pItem->item.asString.value )
|
|
{
|
|
hb_xfree( pItem->item.asString.value );
|
|
pItem->item.asString.value = NULL;
|
|
}
|
|
pItem->item.asString.length = 0;
|
|
}
|
|
else if( IS_ARRAY( pItem ) && pItem->item.asArray.value )
|
|
{
|
|
if( --( pItem->item.asArray.value )->wHolders == 0 )
|
|
hb_arrayRelease( pItem );
|
|
}
|
|
else if( IS_BLOCK( pItem ) )
|
|
{
|
|
CodeblockDelete( pItem->item.asBlock.value );
|
|
}
|
|
pItem->type = IT_NIL;
|
|
}
|
|
|
|
void Instring( void )
|
|
{
|
|
PHB_ITEM pItem1 = stack.pPos - 2;
|
|
PHB_ITEM pItem2 = stack.pPos - 1;
|
|
int iResult;
|
|
|
|
if( IS_STRING( pItem1 ) && IS_STRING( pItem2 ) )
|
|
{
|
|
iResult = hb_strAt( pItem1->item.asString.value, pItem1->item.asString.length,
|
|
pItem2->item.asString.value, pItem2->item.asString.length );
|
|
StackPop();
|
|
StackPop();
|
|
PushLogical( iResult == 0 ? 0 : 1 );
|
|
}
|
|
else
|
|
{
|
|
PHB_ITEM pError = hb_errNew();
|
|
|
|
hb_errPutDescription( pError, "Error BASE/1109 Argument error: $" );
|
|
hb_errLaunch( pError );
|
|
hb_errRelease( pError );
|
|
}
|
|
}
|
|
|
|
void ItemCopy( PHB_ITEM pDest, PHB_ITEM pSource )
|
|
{
|
|
ItemRelease( pDest );
|
|
|
|
if( pDest == pSource )
|
|
{
|
|
printf( "an item was going to be copied to itself from ItemCopy()\n" );
|
|
exit( 1 );
|
|
}
|
|
|
|
memcpy( pDest, pSource, sizeof( HB_ITEM ) );
|
|
|
|
if( IS_STRING( pSource ) )
|
|
{
|
|
pDest->item.asString.value = ( char * ) hb_xgrab( pSource->item.asString.length + 1 );
|
|
memcpy( pDest->item.asString.value, pSource->item.asString.value, pSource->item.asString.length );
|
|
pDest->item.asString.value[ pSource->item.asString.length ] = 0;
|
|
}
|
|
|
|
else if( IS_ARRAY( pSource ) )
|
|
( pSource->item.asArray.value )->wHolders++;
|
|
|
|
else if( IS_BLOCK( pSource ) )
|
|
{
|
|
CodeblockCopy( pDest, pSource );
|
|
}
|
|
}
|
|
|
|
void Less( void )
|
|
{
|
|
double dNumber1, dNumber2;
|
|
LONG lDate1, lDate2;
|
|
int i;
|
|
int iLogical1, iLogical2;
|
|
|
|
if( IS_STRING( stack.pPos - 2 ) && IS_STRING( stack.pPos - 1 ) )
|
|
{
|
|
i = hb_itemStrCmp( stack.pPos - 2, stack.pPos - 1, FALSE );
|
|
StackPop();
|
|
StackPop();
|
|
PushLogical( i < 0 );
|
|
}
|
|
|
|
else if( IS_NUMERIC( stack.pPos - 1 ) && IS_NUMERIC( stack.pPos - 2 ) )
|
|
{
|
|
dNumber2 = PopNumber();
|
|
dNumber1 = PopNumber();
|
|
PushLogical( dNumber1 < dNumber2 );
|
|
}
|
|
|
|
else if( IS_DATE( stack.pPos - 1 ) && IS_DATE( stack.pPos - 2 ) )
|
|
{
|
|
lDate2 = PopDate();
|
|
lDate1 = PopDate();
|
|
PushLogical( lDate1 < lDate2 );
|
|
}
|
|
|
|
else if( IS_LOGICAL( stack.pPos - 1 ) && IS_LOGICAL( stack.pPos -2 ) )
|
|
{
|
|
iLogical1 = PopLogical();
|
|
iLogical2 = PopLogical();
|
|
PushLogical( iLogical1 < iLogical2 );
|
|
}
|
|
|
|
else if( IS_OBJECT( stack.pPos - 2 ) &&
|
|
hb_isMessage( stack.pPos - 2, "<" ) )
|
|
OperatorCall( stack.pPos - 2, stack.pPos - 1, "<" );
|
|
|
|
else if( ( stack.pPos - 2 )->type != ( stack.pPos - 1 )->type )
|
|
{
|
|
printf( "types do not match on less operation\n" );
|
|
exit( 1 );
|
|
}
|
|
}
|
|
|
|
void LessEqual( void )
|
|
{
|
|
double dNumber1, dNumber2;
|
|
LONG lDate1, lDate2;
|
|
int i;
|
|
int iLogical1, iLogical2;
|
|
|
|
if( IS_STRING( stack.pPos - 2 ) && IS_STRING( stack.pPos - 1 ) )
|
|
{
|
|
i = hb_itemStrCmp( stack.pPos - 2, stack.pPos - 1, FALSE );
|
|
StackPop();
|
|
StackPop();
|
|
PushLogical( i <= 0 );
|
|
}
|
|
|
|
else if( IS_NUMERIC( stack.pPos - 1 ) && IS_NUMERIC( stack.pPos - 2 ) )
|
|
{
|
|
dNumber2 = PopNumber();
|
|
dNumber1 = PopNumber();
|
|
PushLogical( dNumber1 <= dNumber2 );
|
|
}
|
|
|
|
else if( IS_DATE( stack.pPos - 1 ) && IS_DATE( stack.pPos - 2 ) )
|
|
{
|
|
lDate2 = PopDate();
|
|
lDate1 = PopDate();
|
|
PushLogical( lDate1 <= lDate2 );
|
|
}
|
|
|
|
else if( IS_LOGICAL( stack.pPos - 1 ) && IS_LOGICAL( stack.pPos -2 ) )
|
|
{
|
|
iLogical1 = PopLogical();
|
|
iLogical2 = PopLogical();
|
|
PushLogical( iLogical1 <= iLogical2 );
|
|
}
|
|
|
|
else if( IS_OBJECT( stack.pPos - 2 ) &&
|
|
hb_isMessage( stack.pPos - 2, "<=" ) )
|
|
OperatorCall( stack.pPos - 2, stack.pPos - 1, "<=" );
|
|
|
|
else if( ( stack.pPos - 2 )->type != ( stack.pPos - 1 )->type )
|
|
{
|
|
printf( "types do not match on lessequal operation\n" );
|
|
exit( 1 );
|
|
}
|
|
}
|
|
|
|
void Message( PSYMBOL pSymMsg ) /* sends a message to an object */
|
|
{
|
|
ItemCopy( stack.pPos, stack.pPos - 1 ); /* moves the object forward */
|
|
ItemRelease( 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;
|
|
StackPush();
|
|
HB_DEBUG2( "Message: %s\n", pSymMsg->szName );
|
|
}
|
|
|
|
void Line( WORD wLine )
|
|
{
|
|
stack.pBase->item.asSymbol.lineno = wLine;
|
|
HB_DEBUG( "line\n" );
|
|
}
|
|
|
|
void Negate( void )
|
|
{
|
|
if( IS_INTEGER( stack.pPos - 1 ) )
|
|
( stack.pPos - 1 )->item.asInteger.value = -( stack.pPos - 1 )->item.asInteger.value;
|
|
|
|
else if( IS_LONG( stack.pPos - 1 ) )
|
|
( stack.pPos - 1 )->item.asLong.value = -( stack.pPos - 1 )->item.asLong.value;
|
|
|
|
else if( IS_DOUBLE( stack.pPos - 1 ) )
|
|
( stack.pPos - 1 )->item.asDouble.value = -( stack.pPos - 1 )->item.asDouble.value;
|
|
}
|
|
|
|
void Not( void )
|
|
{
|
|
PHB_ITEM pItem = stack.pPos - 1;
|
|
|
|
if( IS_LOGICAL( pItem ) )
|
|
pItem->item.asLogical.value = ! pItem->item.asLogical.value;
|
|
else
|
|
; /* TODO: Raise an error here ? */
|
|
}
|
|
|
|
void NotEqual( void )
|
|
{
|
|
PHB_ITEM pItem2 = stack.pPos - 1;
|
|
PHB_ITEM pItem1 = stack.pPos - 2;
|
|
int i;
|
|
WORD wDec;
|
|
|
|
if( IS_NIL( pItem1 ) && IS_NIL( pItem2 ) )
|
|
{
|
|
StackPop();
|
|
StackPop();
|
|
PushLogical( 0 );
|
|
}
|
|
|
|
else if ( IS_NIL( pItem1 ) || IS_NIL( pItem2 ) )
|
|
{
|
|
StackPop();
|
|
StackPop();
|
|
PushLogical( 1 ); /* TOFIX: Is this correct ? */
|
|
}
|
|
|
|
else if( IS_STRING( pItem1 ) && IS_STRING( pItem2 ) )
|
|
{
|
|
i = hb_itemStrCmp( pItem1, pItem2, FALSE );
|
|
StackPop();
|
|
StackPop();
|
|
PushLogical( i != 0 );
|
|
}
|
|
|
|
else if( IS_NUMERIC( pItem1 ) && IS_NUMERIC( pItem2 ) )
|
|
PushLogical( PopDouble( &wDec ) != PopDouble( &wDec ) );
|
|
|
|
else if( IS_LOGICAL( pItem1 ) && IS_LOGICAL( pItem2 ) )
|
|
PushLogical( PopLogical() != PopLogical() );
|
|
|
|
else if( IS_OBJECT( pItem1 ) && hb_isMessage( pItem1, "!=" ) )
|
|
OperatorCall( pItem1, pItem2, "!=" );
|
|
|
|
else if( pItem1->type != pItem2->type )
|
|
{
|
|
printf( "types do not match on equal operation\n" );
|
|
exit( 1 );
|
|
}
|
|
|
|
else
|
|
PushLogical( 1 );
|
|
}
|
|
|
|
void Minus( void )
|
|
{
|
|
double dNumber1, dNumber2;
|
|
long lDate1, lDate2;
|
|
|
|
if( IS_NUMERIC( stack.pPos - 1 ) && IS_NUMERIC( stack.pPos - 2 ) )
|
|
{
|
|
WORD wDec2, wDec1;
|
|
dNumber2 = PopDouble( &wDec2 );
|
|
dNumber1 = PopDouble( &wDec1 );
|
|
PushNumber( dNumber1 - dNumber2, (wDec1 > wDec2) ? wDec1 : wDec2 );
|
|
}
|
|
else if( IS_DATE( stack.pPos - 1 ) && IS_DATE( stack.pPos - 2 ) )
|
|
{
|
|
lDate2 = PopDate();
|
|
lDate1 = PopDate();
|
|
PushNumber( lDate1 - lDate2, hb_set.HB_SET_DECIMALS );
|
|
}
|
|
else if( IS_NUMERIC( stack.pPos - 1 ) && IS_DATE( stack.pPos - 2 ) )
|
|
{
|
|
dNumber2 = PopNumber();
|
|
lDate1 = PopDate();
|
|
PushDate( lDate1 - dNumber2 );
|
|
}
|
|
else if( IS_OBJECT( stack.pPos - 2 ) && hb_isMessage( stack.pPos - 2, "-" ) )
|
|
OperatorCall( stack.pPos - 2, stack.pPos - 1, "-" );
|
|
|
|
/* TODO: We should substract strings also ? and generate an error it types
|
|
don't match */
|
|
}
|
|
|
|
void Modulus( void )
|
|
{
|
|
WORD wDec1, wDec2;
|
|
double d2 = PopDouble( &wDec2 );
|
|
double d1 = PopDouble( &wDec1 );
|
|
|
|
PushNumber( ( long ) d1 % ( long ) d2, (wDec1>wDec2) ? wDec1 : wDec2 );
|
|
}
|
|
|
|
void Mult( void )
|
|
{
|
|
WORD wDec2, wDec1;
|
|
double d2 = PopDouble( &wDec2 );
|
|
double d1 = PopDouble( &wDec1 );
|
|
|
|
PushNumber( d1 * d2, wDec1 + wDec2 );
|
|
}
|
|
|
|
void OperatorCall( PHB_ITEM pItem1, PHB_ITEM pItem2, char *szSymbol )
|
|
{
|
|
Push( pItem1 ); /* Push object */
|
|
Message( GetDynSym( szSymbol )->pSymbol ); /* Push operation */
|
|
Push( pItem2 ); /* Push argument */
|
|
Function( 1 );
|
|
}
|
|
|
|
void Or( void )
|
|
{
|
|
PHB_ITEM pItem2 = stack.pPos - 1;
|
|
PHB_ITEM pItem1 = stack.pPos - 2;
|
|
PHB_ITEM pError;
|
|
int iResult;
|
|
|
|
if( IS_LOGICAL( pItem1 ) && IS_LOGICAL( pItem2 ) )
|
|
{
|
|
iResult = pItem1->item.asLogical.value || pItem2->item.asLogical.value;
|
|
StackPop();
|
|
StackPop();
|
|
PushLogical( iResult );
|
|
}
|
|
else
|
|
{
|
|
pError = hb_errNew();
|
|
hb_errPutDescription( pError, "Argument error: conditional" );
|
|
hb_errLaunch( pError );
|
|
hb_errRelease( pError );
|
|
}
|
|
}
|
|
|
|
void Plus( void )
|
|
{
|
|
PHB_ITEM pItem1 = stack.pPos - 2;
|
|
PHB_ITEM pItem2 = stack.pPos - 1;
|
|
double dNumber1, dNumber2;
|
|
long lDate1, lDate2;
|
|
|
|
if( IS_STRING( pItem1 ) && IS_STRING( pItem2 ) )
|
|
{
|
|
pItem1->item.asString.value = (char*)hb_xrealloc( pItem1->item.asString.value, pItem1->item.asString.length + pItem2->item.asString.length + 1 );
|
|
memcpy( 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;
|
|
}
|
|
StackPop();
|
|
return;
|
|
}
|
|
|
|
else if( IS_NUMERIC( pItem1 ) && IS_NUMERIC( pItem2 ) )
|
|
{
|
|
WORD wDec2, wDec1;
|
|
dNumber2 = PopDouble( &wDec2 );
|
|
dNumber1 = PopDouble( &wDec1 );
|
|
|
|
PushNumber( dNumber1 + dNumber2, (wDec1>wDec2) ? wDec1 : wDec2 );
|
|
}
|
|
|
|
else if( IS_DATE( pItem1 ) && IS_DATE( pItem2 ) )
|
|
{
|
|
lDate2 = PopDate();
|
|
lDate1 = PopDate();
|
|
PushDate( lDate1 + lDate2 );
|
|
}
|
|
|
|
else if( IS_DATE( pItem1 ) && IS_NUMERIC( pItem2 ) )
|
|
{
|
|
WORD wDec;
|
|
dNumber2 = PopDouble( &wDec );
|
|
lDate1 = PopDate();
|
|
PushDate( lDate1 + dNumber2 );
|
|
}
|
|
|
|
else if( IS_OBJECT( pItem1 ) && hb_isMessage( pItem2, "+" ) )
|
|
OperatorCall( pItem1, pItem2, "+" );
|
|
|
|
/* TODO: Generate an error if types don't match */
|
|
HB_DEBUG( "Plus\n" );
|
|
}
|
|
|
|
long PopDate( void )
|
|
{
|
|
StackPop();
|
|
|
|
if( IS_DATE( stack.pPos ) )
|
|
return stack.pPos->item.asDate.value;
|
|
else
|
|
{
|
|
printf( "incorrect item value trying to Pop a date value\n" );
|
|
exit( 1 );
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
void PopDefStat( WORD wStatic ) /* Pops a default value to a STATIC */
|
|
{
|
|
PHB_ITEM pStatic;
|
|
|
|
StackPop();
|
|
pStatic = aStatics.item.asArray.value->pItems + stack.iStatics +
|
|
wStatic - 1;
|
|
|
|
if( IS_BYREF( pStatic ) )
|
|
{
|
|
if( ( stack.pItems + pStatic->item.asRefer.value )->type == IT_NIL )
|
|
/* Only initialize when NIL */
|
|
ItemCopy( stack.pItems + pStatic->item.asRefer.value, stack.pPos );
|
|
}
|
|
else
|
|
if( pStatic->type == IT_NIL ) /* Only initialize when NIL */
|
|
ItemCopy( pStatic, stack.pPos );
|
|
|
|
ItemRelease( stack.pPos );
|
|
HB_DEBUG( "PopDefStat\n" );
|
|
}
|
|
|
|
double PopDouble( WORD *pwDec )
|
|
{
|
|
double d;
|
|
|
|
StackPop();
|
|
|
|
switch( stack.pPos->type & ~IT_BYREF )
|
|
{
|
|
case IT_INTEGER:
|
|
d = stack.pPos->item.asInteger.value;
|
|
*pwDec =0;
|
|
break;
|
|
|
|
case IT_LONG:
|
|
d = stack.pPos->item.asLong.value;
|
|
*pwDec =0;
|
|
break;
|
|
|
|
case IT_DOUBLE:
|
|
d = stack.pPos->item.asDouble.value;
|
|
*pwDec =stack.pPos->item.asDouble.decimal;
|
|
break;
|
|
|
|
default:
|
|
printf( "Incorrect item type trying to Pop a double\n" );
|
|
exit( 1 );
|
|
d = 0;
|
|
}
|
|
HB_DEBUG( "PopDouble\n" );
|
|
return d;
|
|
}
|
|
|
|
void PopLocal( SHORT iLocal )
|
|
{
|
|
PHB_ITEM pLocal;
|
|
|
|
StackPop();
|
|
|
|
if( iLocal >= 0 )
|
|
{
|
|
/* local variable or local parameter */
|
|
pLocal = stack.pBase + 1 + iLocal;
|
|
if( IS_BYREF( pLocal ) )
|
|
{
|
|
if( pLocal->item.asRefer.value >= 0)
|
|
ItemCopy( stack.pItems + pLocal->item.asRefer.value, stack.pPos );
|
|
else
|
|
/* local variable referenced in a codeblock */
|
|
ItemCopy( CodeblockGetVar( stack.pItems +pLocal->item.asRefer.stackbase +1, pLocal->item.asRefer.value ), stack.pPos );
|
|
}
|
|
else
|
|
ItemCopy( pLocal, stack.pPos );
|
|
}
|
|
else
|
|
/* local variable referenced in a codeblock */
|
|
ItemCopy( CodeblockGetVar( stack.pBase + 1, iLocal ), stack.pPos );
|
|
|
|
ItemRelease( stack.pPos );
|
|
HB_DEBUG( "PopLocal\n" );
|
|
}
|
|
|
|
int PopLogical( void )
|
|
{
|
|
PHB_ITEM pError;
|
|
|
|
StackPop();
|
|
|
|
if( IS_LOGICAL( stack.pPos ) )
|
|
return stack.pPos->item.asLogical.value;
|
|
else
|
|
{
|
|
pError = hb_errNew();
|
|
hb_errPutDescription( pError, "Argument error: conditional" );
|
|
hb_errLaunch( pError );
|
|
hb_errRelease( pError );
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
double PopNumber( void )
|
|
{
|
|
PHB_ITEM pItem = stack.pPos - 1;
|
|
double dNumber;
|
|
|
|
StackPop();
|
|
|
|
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:
|
|
printf( "Incorrect item on the stack trying to pop a number\n" );
|
|
exit( 1 );
|
|
break;
|
|
}
|
|
return dNumber;
|
|
}
|
|
|
|
void PopStatic( WORD wStatic )
|
|
{
|
|
PHB_ITEM pStatic;
|
|
|
|
StackPop();
|
|
pStatic = aStatics.item.asArray.value->pItems + stack.iStatics +
|
|
wStatic - 1;
|
|
|
|
if( IS_BYREF( pStatic ) )
|
|
ItemCopy( stack.pItems + pStatic->item.asRefer.value, stack.pPos );
|
|
else
|
|
ItemCopy( pStatic, stack.pPos );
|
|
|
|
ItemRelease( stack.pPos );
|
|
HB_DEBUG( "PopStatic\n" );
|
|
}
|
|
|
|
void Power( void )
|
|
{
|
|
WORD wDec1, wDec2;
|
|
double d2 = PopDouble( &wDec2 );
|
|
double d1 = PopDouble( &wDec1 );
|
|
|
|
PushNumber( pow( d1, d2 ), (wDec1>wDec2) ? wDec1 : wDec2 );
|
|
}
|
|
|
|
void PushLogical( int iTrueFalse )
|
|
{
|
|
ItemRelease( stack.pPos );
|
|
stack.pPos->type = IT_LOGICAL;
|
|
stack.pPos->item.asLogical.value = iTrueFalse;
|
|
StackPush();
|
|
HB_DEBUG( "PushLogical\n" );
|
|
}
|
|
|
|
void PushLocal( SHORT iLocal )
|
|
{
|
|
PHB_ITEM pLocal;
|
|
|
|
if( iLocal >= 0 )
|
|
{
|
|
/* local variable or local parameter */
|
|
pLocal = stack.pBase + 1 + iLocal;
|
|
if( IS_BYREF( pLocal ) )
|
|
{
|
|
if( pLocal->item.asRefer.value >= 0 )
|
|
ItemCopy( stack.pPos, stack.pItems + pLocal->item.asRefer.value );
|
|
else
|
|
/* local variable referenced in a codeblock */
|
|
ItemCopy( stack.pPos, CodeblockGetVar( stack.pItems + pLocal->item.asRefer.stackbase +1, pLocal->item.asRefer.value) );
|
|
}
|
|
else
|
|
ItemCopy( stack.pPos, pLocal );
|
|
}
|
|
else
|
|
/* local variable referenced in a codeblock */
|
|
ItemCopy( stack.pPos, CodeblockGetVar( stack.pBase + 1, (LONG)iLocal ) );
|
|
StackPush();
|
|
HB_DEBUG2( "PushLocal %i\n", iLocal );
|
|
}
|
|
|
|
void PushLocalByRef( SHORT iLocal )
|
|
{
|
|
ItemRelease( stack.pPos );
|
|
stack.pPos->type = IT_BYREF;
|
|
/* we store its stack offset instead of a pointer to support a dynamic stack */
|
|
if( iLocal >= 0 )
|
|
/* local variable or local parameter */
|
|
/* store the position of referenced local variable on the eval stack */
|
|
stack.pPos->item.asRefer.value = stack.pBase + 1 + iLocal - stack.pItems;
|
|
else
|
|
{
|
|
/* local variable referenced in a codeblock */
|
|
stack.pPos->item.asRefer.value = iLocal;
|
|
stack.pPos->item.asRefer.stackbase = stack.pBase - stack.pItems;
|
|
}
|
|
|
|
StackPush();
|
|
HB_DEBUG2( "PushLocalByRef %i\n", iLocal );
|
|
}
|
|
|
|
void PushNil( void )
|
|
{
|
|
ItemRelease( stack.pPos );
|
|
StackPush();
|
|
HB_DEBUG( "PushNil\n" );
|
|
}
|
|
|
|
void PushNumber( double dNumber, WORD wDec )
|
|
{
|
|
if( wDec )
|
|
PushDouble( dNumber, wDec );
|
|
|
|
else if( SHRT_MIN <= dNumber && dNumber <= SHRT_MAX )
|
|
PushInteger( dNumber );
|
|
|
|
else if( LONG_MIN <= dNumber && dNumber <= LONG_MAX )
|
|
PushLong( dNumber );
|
|
|
|
else
|
|
PushDouble( dNumber, hb_set.HB_SET_DECIMALS );
|
|
}
|
|
|
|
void PushStatic( WORD wStatic )
|
|
{
|
|
ItemCopy( stack.pPos, aStatics.item.asArray.value->pItems +
|
|
stack.iStatics + wStatic - 1 );
|
|
StackPush();
|
|
HB_DEBUG2( "PushStatic %i\n", wStatic );
|
|
}
|
|
|
|
void PushString( char * szText, ULONG length )
|
|
{
|
|
char * szTemp = ( char * ) hb_xgrab( length + 1 );
|
|
|
|
memcpy (szTemp, szText, length);
|
|
szTemp[ length ] = 0;
|
|
|
|
ItemRelease( stack.pPos );
|
|
stack.pPos->type = IT_STRING;
|
|
stack.pPos->item.asString.length = length;
|
|
stack.pPos->item.asString.value = szTemp;
|
|
StackPush();
|
|
HB_DEBUG( "PushString\n" );
|
|
}
|
|
|
|
void PushSymbol( PSYMBOL pSym )
|
|
{
|
|
ItemRelease( stack.pPos );
|
|
stack.pPos->type = IT_SYMBOL;
|
|
stack.pPos->item.asSymbol.value = pSym;
|
|
stack.pPos->item.asSymbol.stackbase = stack.pPos - stack.pItems;
|
|
StackPush();
|
|
HB_DEBUG2( "PushSymbol: %s\n", pSym->szName );
|
|
}
|
|
|
|
void Push( PHB_ITEM pItem )
|
|
{
|
|
ItemCopy( stack.pPos, pItem );
|
|
StackPush();
|
|
HB_DEBUG( "Push\n" );
|
|
}
|
|
|
|
void PushBlock( BYTE * pCode, WORD wSize, WORD wParam, PSYMBOL pSymbols )
|
|
{
|
|
ItemRelease( stack.pPos );
|
|
stack.pPos->type = IT_BLOCK;
|
|
stack.pPos->item.asBlock.value = CodeblockNew( pCode, wSize, pSymbols,
|
|
stack.iStatics, stack.pBase - stack.pItems );
|
|
/* store the stack base of function where the codeblock was defined */
|
|
stack.pPos->item.asBlock.stackbase = stack.pBase - stack.pItems;
|
|
/* store the number of expected parameters */
|
|
stack.pPos->item.asBlock.paramcnt = wParam;
|
|
/* store the line number where the codeblock was defined */
|
|
stack.pPos->item.asBlock.lineno = stack.pBase->item.asSymbol.lineno;
|
|
StackPush();
|
|
HB_DEBUG( "PushBlock\n" );
|
|
}
|
|
|
|
void PushDate( LONG lDate )
|
|
{
|
|
ItemRelease( stack.pPos );
|
|
stack.pPos->type = IT_DATE;
|
|
stack.pPos->item.asDate.value = lDate;
|
|
StackPush();
|
|
HB_DEBUG( "PushDate\n" );
|
|
}
|
|
|
|
void PushDouble( double dNumber, WORD wDec )
|
|
{
|
|
ItemRelease( stack.pPos );
|
|
stack.pPos->type = IT_DOUBLE;
|
|
stack.pPos->item.asDouble.value = dNumber;
|
|
if( dNumber >= 10000000000.0 ) stack.pPos->item.asDouble.length = 20;
|
|
else stack.pPos->item.asDouble.length = 10;
|
|
stack.pPos->item.asDouble.decimal = (wDec > 9) ? 9 : wDec;
|
|
StackPush();
|
|
HB_DEBUG( "PushDouble\n" );
|
|
}
|
|
|
|
void PushInteger( int iNumber )
|
|
{
|
|
ItemRelease( stack.pPos );
|
|
stack.pPos->type = IT_INTEGER;
|
|
stack.pPos->item.asInteger.value = iNumber;
|
|
stack.pPos->item.asInteger.length = 10;
|
|
stack.pPos->item.asInteger.decimal = 0;
|
|
StackPush();
|
|
HB_DEBUG( "PushInteger\n" );
|
|
}
|
|
|
|
void PushLong( long lNumber )
|
|
{
|
|
ItemRelease( stack.pPos );
|
|
stack.pPos->type = IT_LONG;
|
|
stack.pPos->item.asLong.value = lNumber;
|
|
stack.pPos->item.asLong.length = 10;
|
|
stack.pPos->item.asLong.decimal = 0;
|
|
StackPush();
|
|
HB_DEBUG( "PushLong\n" );
|
|
}
|
|
|
|
void RetValue( void )
|
|
{
|
|
StackPop();
|
|
ItemCopy( &stack.Return, stack.pPos );
|
|
if( stack.Return.type == IT_BLOCK )
|
|
CodeblockDetach( stack.Return.item.asBlock.value );
|
|
HB_DEBUG( "RetValue\n" );
|
|
}
|
|
|
|
void StackPop( void )
|
|
{
|
|
ItemRelease( stack.pPos );
|
|
|
|
if( --stack.pPos < stack.pItems )
|
|
{
|
|
printf( "runtime error: stack underflow\n" );
|
|
exit( 1 );
|
|
}
|
|
}
|
|
|
|
void StackFree( void )
|
|
{
|
|
hb_xfree( stack.pItems );
|
|
HB_DEBUG( "StackFree\n" );
|
|
}
|
|
|
|
void StackPush( void )
|
|
{
|
|
LONG CurrIndex, /* index of current top item */
|
|
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: */
|
|
/* StackShow(); */
|
|
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;
|
|
/* StackShow(); */
|
|
}
|
|
|
|
/* now, push it: */
|
|
stack.pPos++;
|
|
stack.pPos->type = IT_NIL;
|
|
return;
|
|
}
|
|
|
|
void 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( "StackInit\n" );
|
|
}
|
|
|
|
void StackShow( void )
|
|
{
|
|
PHB_ITEM p;
|
|
|
|
for( p = stack.pBase; p <= stack.pPos; p++ )
|
|
{
|
|
switch( p->type )
|
|
{
|
|
case IT_NIL:
|
|
printf( "NIL " );
|
|
break;
|
|
|
|
case IT_ARRAY:
|
|
if( p->item.asArray.value->wClass )
|
|
printf( "OBJECT " );
|
|
else
|
|
printf( "ARRAY " );
|
|
break;
|
|
|
|
case IT_BLOCK:
|
|
printf( "BLOCK " );
|
|
break;
|
|
|
|
case IT_DATE:
|
|
printf( "DATE " );
|
|
break;
|
|
|
|
case IT_DOUBLE:
|
|
printf( "DOUBLE " );
|
|
break;
|
|
|
|
case IT_LOGICAL:
|
|
printf( "LOGICAL[%i] ", p->item.asLogical.value );
|
|
break;
|
|
|
|
case IT_LONG:
|
|
printf( "LONG" );
|
|
break;
|
|
|
|
case IT_INTEGER:
|
|
printf( "INTEGER[%i] ", p->item.asInteger.value );
|
|
break;
|
|
|
|
case IT_STRING:
|
|
printf( "STRING " );
|
|
break;
|
|
|
|
case IT_SYMBOL:
|
|
printf( "SYMBOL(%s) ", p->item.asSymbol.value->szName );
|
|
break;
|
|
|
|
default:
|
|
printf( "UNKNOWN[%i] ", p->type );
|
|
break;
|
|
}
|
|
}
|
|
printf( "\n" );
|
|
}
|
|
|
|
void SFrame( PSYMBOL 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, _INITSTATICS } for each PRG */
|
|
HB_DEBUG( "SFrame\n" );
|
|
}
|
|
|
|
void Statics( PSYMBOL pSym ) /* initializes the global aStatics array or redimensionates it */
|
|
{
|
|
WORD wStatics = PopNumber();
|
|
|
|
if( IS_NIL( &aStatics ) )
|
|
{
|
|
pSym->pFunPtr = 0; /* statics frame for this PRG */
|
|
hb_arrayNew( &aStatics, wStatics );
|
|
}
|
|
else
|
|
{
|
|
pSym->pFunPtr = ( HARBOURFUNC )hb_arrayLen( &aStatics );
|
|
hb_arraySize( &aStatics, hb_arrayLen( &aStatics ) + wStatics );
|
|
}
|
|
|
|
HB_DEBUG2( "Statics %li\n", hb_arrayLen( &aStatics ) );
|
|
}
|
|
|
|
void ProcessSymbols( PSYMBOL pModuleSymbols, WORD wModuleSymbols ) /* module symbols initialization */
|
|
{
|
|
PSYMBOLS pNewSymbols, pLastSymbols;
|
|
WORD w;
|
|
#ifdef HARBOUR_OBJ_GENERATION
|
|
static int iObjChecked = 0;
|
|
|
|
if( ! iObjChecked )
|
|
{
|
|
iObjChecked = 1;
|
|
ProcessObjSymbols(); /* to asure Harbour OBJ symbols are processed first */
|
|
}
|
|
#endif
|
|
|
|
pNewSymbols = ( PSYMBOLS ) hb_xgrab( sizeof( SYMBOLS ) );
|
|
pNewSymbols->pModuleSymbols = pModuleSymbols;
|
|
pNewSymbols->wModuleSymbols = wModuleSymbols;
|
|
pNewSymbols->pNext = 0;
|
|
|
|
if( ! pSymbols )
|
|
pSymbols = pNewSymbols;
|
|
else
|
|
{
|
|
pLastSymbols = pSymbols;
|
|
while( pLastSymbols->pNext ) /* locates the latest processed group of symbols */
|
|
pLastSymbols = pLastSymbols->pNext;
|
|
pLastSymbols->pNext = pNewSymbols;
|
|
}
|
|
|
|
for( w = 0; w < wModuleSymbols; w++ ) /* register each public symbol on the dynamic symbol table */
|
|
{
|
|
if( ( ! pSymStart ) && ( ( pModuleSymbols + w )->cScope == FS_PUBLIC ) )
|
|
pSymStart = pModuleSymbols + w; /* first public defined symbol to start execution */
|
|
|
|
if( ( ( pModuleSymbols + w )->cScope == FS_PUBLIC ) ||
|
|
( ( pModuleSymbols + w )->cScope & FS_MESSAGE ) )
|
|
NewDynSym( pModuleSymbols + w );
|
|
}
|
|
}
|
|
|
|
#ifdef HARBOUR_OBJ_GENERATION
|
|
void ProcessObjSymbols( void )
|
|
{
|
|
POBJSYMBOLS pObjSymbols = ( POBJSYMBOLS ) &HB_FIRSTSYMBOL;
|
|
|
|
static int iDone = 0;
|
|
|
|
if( ! iDone )
|
|
{
|
|
iDone = 1;
|
|
while( pObjSymbols < ( POBJSYMBOLS ) ( &HB_LASTSYMBOL - 1 ) )
|
|
{
|
|
ProcessSymbols( pObjSymbols->pSymbols, pObjSymbols->wSymbols );
|
|
pObjSymbols++;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
void ReleaseLocalSymbols( void )
|
|
{
|
|
PSYMBOLS pDestroy;
|
|
|
|
while( pSymbols )
|
|
{
|
|
pDestroy = pSymbols;
|
|
pSymbols = pSymbols->pNext;
|
|
hb_xfree( pDestroy );
|
|
}
|
|
}
|
|
|
|
void DoExitFunctions( void )
|
|
{
|
|
PSYMBOLS pLastSymbols = pSymbols;
|
|
WORD w;
|
|
|
|
do {
|
|
for( w = 0; w < pLastSymbols->wModuleSymbols; w++ )
|
|
{
|
|
if( ( pLastSymbols->pModuleSymbols + w )->cScope & FS_EXIT )
|
|
{
|
|
PushSymbol( pLastSymbols->pModuleSymbols + w );
|
|
PushNil();
|
|
Do( 0 );
|
|
}
|
|
}
|
|
pLastSymbols = pLastSymbols->pNext;
|
|
} while( pLastSymbols );
|
|
}
|
|
|
|
void DoInitFunctions( int argc, char * argv[] )
|
|
{
|
|
PSYMBOLS pLastSymbols = pSymbols;
|
|
WORD w;
|
|
|
|
do {
|
|
for( w = 0; w < pLastSymbols->wModuleSymbols; w++ )
|
|
{
|
|
if( ( pLastSymbols->pModuleSymbols + w )->cScope & FS_INIT )
|
|
{
|
|
int i;
|
|
|
|
PushSymbol( pLastSymbols->pModuleSymbols + w );
|
|
PushNil();
|
|
|
|
for( i = 1; i < argc; i++ ) /* places application parameters on the stack */
|
|
PushString( argv[ i ], strlen( argv[ i ] ) );
|
|
|
|
Do( argc - 1 );
|
|
}
|
|
}
|
|
pLastSymbols = pLastSymbols->pNext;
|
|
} while( pLastSymbols );
|
|
}
|
|
|
|
HARBOUR HB_LEN( void )
|
|
{
|
|
PHB_ITEM pItem;
|
|
|
|
if( hb_pcount() )
|
|
{
|
|
pItem = hb_param( 1, IT_ANY );
|
|
|
|
switch( pItem->type )
|
|
{
|
|
case IT_ARRAY:
|
|
hb_retnl( pItem->item.asArray.value->ulLen );
|
|
break;
|
|
|
|
case IT_STRING:
|
|
hb_retnl( pItem->item.asString.length );
|
|
break;
|
|
|
|
default:
|
|
hb_retni( 0 ); /* QUESTION: Should we raise an error here ? */
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
hb_retni( 0 ); /* QUESTION: Should we raise an error here ? */
|
|
}
|
|
|
|
HARBOUR HB_EMPTY(void)
|
|
{
|
|
PHB_ITEM pItem = hb_param( 1, IT_ANY );
|
|
|
|
if( pItem )
|
|
{
|
|
switch( pItem->type & ~IT_BYREF )
|
|
{
|
|
case IT_ARRAY:
|
|
hb_retl( pItem->item.asArray.value->ulLen == 0 );
|
|
break;
|
|
|
|
case IT_STRING:
|
|
hb_retl( hb_strempty( hb_parc( 1 ), hb_parclen( 1 ) ) );
|
|
break;
|
|
|
|
case IT_INTEGER:
|
|
hb_retl( ! hb_parni( 1 ) );
|
|
break;
|
|
|
|
case IT_LONG:
|
|
hb_retl( ! hb_parnl( 1 ) );
|
|
break;
|
|
|
|
case IT_DOUBLE:
|
|
hb_retl( ! hb_parnd( 1 ) );
|
|
break;
|
|
|
|
case IT_DATE:
|
|
hb_retl( atol( hb_pards( 1 ) ) == 0 ); /* Convert to long */
|
|
break;
|
|
|
|
case IT_LOGICAL:
|
|
hb_retl( ! hb_parl( 1 ) );
|
|
break;
|
|
|
|
case IT_BLOCK:
|
|
hb_retl( FALSE );
|
|
break;
|
|
|
|
default:
|
|
hb_retl( TRUE );
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
hb_retl( TRUE );
|
|
}
|
|
|
|
|
|
HARBOUR HB_VALTYPE( void )
|
|
{
|
|
PHB_ITEM pItem;
|
|
|
|
if( hb_pcount() )
|
|
{
|
|
pItem = hb_param( 1, IT_ANY );
|
|
|
|
switch( pItem->type & ~IT_BYREF )
|
|
{
|
|
case IT_ARRAY:
|
|
if( pItem->item.asArray.value->wClass )
|
|
hb_retc( "O" ); /* it is an object */
|
|
else
|
|
hb_retc( "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_retc( "U" );
|
|
}
|
|
|
|
HARBOUR HB_ERRORBLOCK(void)
|
|
{
|
|
HB_ITEM oldError;
|
|
PHB_ITEM pNewErrorBlock = hb_param( 1, IT_BLOCK );
|
|
|
|
oldError.type = IT_NIL;
|
|
ItemCopy( &oldError, &errorBlock );
|
|
|
|
if( pNewErrorBlock )
|
|
ItemCopy( &errorBlock, pNewErrorBlock );
|
|
|
|
ItemCopy( &stack.Return, &oldError );
|
|
ItemRelease( &oldError );
|
|
}
|
|
|
|
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 ) )
|
|
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 );
|
|
}
|
|
|
|
HARBOUR HB___QUIT(void)
|
|
{
|
|
bQuit = TRUE;
|
|
}
|
|
|
|
HARBOUR HB_ERRORLEVEL(void)
|
|
{
|
|
BYTE bPrevValue = bErrorLevel;
|
|
|
|
if( hb_pcount() > 0 )
|
|
/* Only replace the error level if a parameter was passed */
|
|
bErrorLevel = hb_parni( 1 );
|
|
hb_retni( bPrevValue );
|
|
}
|
|
|
|
HARBOUR HB_PCOUNT(void)
|
|
{
|
|
PHB_ITEM pBase = stack.pItems + stack.pBase->item.asSymbol.stackbase;
|
|
WORD wRet = pBase->item.asSymbol.paramcnt; /* Skip current function */
|
|
|
|
hb_retni( wRet );
|
|
}
|
|
|
|
HARBOUR HB_PVALUE(void) /* PValue( <nArg> ) */
|
|
{
|
|
WORD wParam = hb_parni( 1 ); /* Get parameter */
|
|
PHB_ITEM pBase = stack.pItems + stack.pBase->item.asSymbol.stackbase;
|
|
/* Skip function + self */
|
|
|
|
if( wParam && wParam <= pBase->item.asSymbol.paramcnt ) /* Valid number */
|
|
hb_itemReturn( pBase + 1 + wParam );
|
|
else
|
|
{
|
|
PHB_ITEM pError = hb_errNew();
|
|
|
|
hb_errPutDescription(pError, "Argument error: PVALUE");
|
|
hb_errLaunch(pError);
|
|
hb_errRelease(pError);
|
|
hb_ret();
|
|
}
|
|
}
|