/**************************************************************************
d i s p l a y FS t a c k
** Display the parameter stack (code for "f.s")
** f.s ( -- )
**************************************************************************/
static void displayFStack(FICL_VM *pVM)
{
int d = stackDepth(pVM->fStack);
int i;
CELL *pCell;
vmCheckFStack(pVM, 0, 0);
vmTextOut(pVM, "F:", 0);
if (d == 0)
vmTextOut(pVM, "[0]", 0);
else
{
ltoa(d, &pVM->pad[1], pVM->base);
pVM->pad[0] = '[';
strcat(pVM->pad,"] ");
vmTextOut(pVM,pVM->pad,0);
pCell = pVM->fStack->sp - d;
for (i = 0; i < d; i++)
{
sprintf(pVM->pad,"%#f ",(*pCell++).f);
vmTextOut(pVM,pVM->pad,0);
}
}
}
/*
** Here's the outer part of the decompiler. It's
** just a big nested conditional that checks the
** CFA of the word to decompile for each kind of
** known word-builder code, and tries to do
** something appropriate. If the CFA is not recognized,
** just indicate that it is a primitive.
*/
static void seeXT(FICL_VM *pVM)
{
FICL_WORD *pFW;
WORDKIND kind;
pFW = (FICL_WORD *)stackPopPtr(pVM->pStack);
kind = ficlWordClassify(pFW);
switch (kind)
{
case COLON:
sprintf(pVM->pad, ": %.*s", pFW->nName, pFW->name);
vmTextOut(pVM, pVM->pad, 1);
seeColon(pVM, pFW->param);
break;
case DOES:
vmTextOut(pVM, "does>", 1);
seeColon(pVM, (CELL *)pFW->param->p);
break;
case CREATE:
vmTextOut(pVM, "create", 1);
break;
case VARIABLE:
sprintf(pVM->pad, "variable = %ld (%#lx)", pFW->param->i, pFW->param->u);
vmTextOut(pVM, pVM->pad, 1);
break;
#if FICL_WANT_USER
case USER:
sprintf(pVM->pad, "user variable %ld (%#lx)", pFW->param->i, pFW->param->u);
vmTextOut(pVM, pVM->pad, 1);
break;
#endif
case CONSTANT:
sprintf(pVM->pad, "constant = %ld (%#lx)", pFW->param->i, pFW->param->u);
vmTextOut(pVM, pVM->pad, 1);
default:
sprintf(pVM->pad, "%.*s is a primitive", pFW->nName, pFW->name);
vmTextOut(pVM, pVM->pad, 1);
break;
}
if (pFW->flags & FW_IMMEDIATE)
{
vmTextOut(pVM, "immediate", 1);
}
if (pFW->flags & FW_COMPILE)
{
vmTextOut(pVM, "compile-only", 1);
}
return;
}
/*
** Ficl interface to getcwd
** Prints the current working directory using the VM's
** textOut method...
*/
static void ficlGetCWD(FICL_VM *pVM)
{
char *cp;
cp = getcwd(NULL, 80);
vmTextOut(pVM, cp, 1);
free(cp);
return;
}
/*
** Ficl interface to chdir
** Gets a newline (or NULL) delimited string from the input
** and feeds it to chdir()
** Example:
** cd c:\tmp
*/
static void ficlChDir(FICL_VM *pVM)
{
FICL_STRING *pFS = (FICL_STRING *)pVM->pad;
vmGetString(pVM, pFS, '\n');
if (pFS->count > 0)
{
int err = chdir(pFS->text);
if (err)
{
vmTextOut(pVM, "Error: path not found", 1);
vmThrow(pVM, VM_QUIT);
}
}
else
{
vmTextOut(pVM, "Warning (chdir): nothing happened", 1);
}
return;
}
/*
** This word lists the parse steps in order
*/
void ficlListParseSteps(FICL_VM *pVM)
{
int i;
FICL_SYSTEM *pSys = pVM->pSys;
assert(pSys);
vmTextOut(pVM, "Parse steps:", 1);
vmTextOut(pVM, "lookup", 1);
for (i = 0; i < FICL_MAX_PARSE_STEPS; i++)
{
if (pSys->parseList[i] != NULL)
{
vmTextOut(pVM, pSys->parseList[i]->name, 1);
}
else break;
}
return;
}
static void displayCellNoPad(FICL_VM *pVM)
{
CELL c;
#if FICL_ROBUST > 1
vmCheckStack(pVM, 1, 0);
#endif
c = stackPop(pVM->pStack);
ltoa((c).i, pVM->pad, pVM->base);
vmTextOut(pVM, pVM->pad, 0);
return;
}
/*******************************************************************
** Display a float in engineering format.
** fe. ( r -- )
*******************************************************************/
static void EDot(FICL_VM *pVM)
{
float f;
#if FICL_ROBUST > 1
vmCheckFStack(pVM, 1, 0);
#endif
f = POPFLOAT();
sprintf(pVM->pad,"%#e ",f);
vmTextOut(pVM, pVM->pad, 0);
}
/*
** Ficl interface to system (ANSI)
** Gets a newline (or NULL) delimited string from the input
** and feeds it to system()
** Example:
** system rm -rf /
** \ ouch!
*/
static void ficlSystem(FICL_VM *pVM)
{
FICL_STRING *pFS = (FICL_STRING *)pVM->pad;
vmGetString(pVM, pFS, '\n');
if (pFS->count > 0)
{
int err = system(pFS->text);
if (err)
{
sprintf(pVM->pad, "System call returned %d", err);
vmTextOut(pVM, pVM->pad, 1);
vmThrow(pVM, VM_QUIT);
}
}
else
{
vmTextOut(pVM, "Warning (system): nothing happened", 1);
}
return;
}
/*
** Dump a tab delimited file that summarizes the contents of the
** dictionary hash table by hashcode...
*/
static void spewHash(FICL_VM *pVM)
{
FICL_HASH *pHash = vmGetDict(pVM)->pForthWords;
FICL_WORD *pFW;
FILE *pOut;
unsigned i;
unsigned nHash = pHash->size;
if (!vmGetWordToPad(pVM))
vmThrow(pVM, VM_OUTOFTEXT);
pOut = fopen(pVM->pad, "w");
if (!pOut)
{
vmTextOut(pVM, "unable to open file", 1);
return;
}
for (i=0; i < nHash; i++)
{
int n = 0;
pFW = pHash->table[i];
while (pFW)
{
n++;
pFW = pFW->link;
}
fprintf(pOut, "%d\t%d", i, n);
pFW = pHash->table[i];
while (pFW)
{
fprintf(pOut, "\t%s", pFW->name);
pFW = pFW->link;
}
fprintf(pOut, "\n");
}
fclose(pOut);
return;
}
FICL_PLATFORM_EXTERN void ficlTextOut (ficlVm *vm, char *text, int fNewline)
{
vmTextOut(vm, text, fNewline);
}
/*
** seeColon (for proctologists only)
** Walks a colon definition, decompiling
** on the fly. Knows about primitive control structures.
*/
static void seeColon(FICL_VM *pVM, CELL *pc)
{
char *cp;
CELL *param0 = pc;
FICL_DICT *pd = vmGetDict(pVM);
FICL_WORD *pSemiParen = ficlLookup(pVM->pSys, "(;)");
assert(pSemiParen);
for (; pc->p != pSemiParen; pc++)
{
FICL_WORD *pFW = (FICL_WORD *)(pc->p);
cp = pVM->pad;
if ((void *)pc == (void *)pVM->ip)
*cp++ = '>';
else
*cp++ = ' ';
cp += sprintf(cp, "%3d ", pc-param0);
if (isAFiclWord(pd, pFW))
{
WORDKIND kind = ficlWordClassify(pFW);
CELL c;
switch (kind)
{
case LITERAL:
c = *++pc;
if (isAFiclWord(pd, c.p))
{
FICL_WORD *pLit = (FICL_WORD *)c.p;
sprintf(cp, "%.*s ( %#lx literal )",
pLit->nName, pLit->name, (unsigned long)c.u);
}
else
sprintf(cp, "literal %ld (%#lx)",
(long)c.i, (unsigned long)c.u);
break;
case STRINGLIT:
{
FICL_STRING *sp = (FICL_STRING *)(void *)++pc;
pc = (CELL *)alignPtr(sp->text + sp->count + 1) - 1;
sprintf(cp, "s\" %.*s\"", sp->count, sp->text);
}
break;
case CSTRINGLIT:
{
FICL_STRING *sp = (FICL_STRING *)(void *)++pc;
pc = (CELL *)alignPtr(sp->text + sp->count + 1) - 1;
sprintf(cp, "c\" %.*s\"", sp->count, sp->text);
}
break;
case IF:
c = *++pc;
if (c.i > 0)
sprintf(cp, "if / while (branch %d)", pc+c.i-param0);
else
sprintf(cp, "until (branch %d)", pc+c.i-param0);
break;
case BRANCH:
c = *++pc;
if (c.i == 0)
sprintf(cp, "repeat (branch %d)", pc+c.i-param0);
else if (c.i == 1)
sprintf(cp, "else (branch %d)", pc+c.i-param0);
else
sprintf(cp, "endof (branch %d)", pc+c.i-param0);
break;
case OF:
c = *++pc;
sprintf(cp, "of (branch %d)", pc+c.i-param0);
break;
case QDO:
c = *++pc;
sprintf(cp, "?do (leave %d)", (CELL *)c.p-param0);
break;
case DO:
c = *++pc;
sprintf(cp, "do (leave %d)", (CELL *)c.p-param0);
break;
case LOOP:
c = *++pc;
sprintf(cp, "loop (branch %d)", pc+c.i-param0);
break;
case PLOOP:
c = *++pc;
sprintf(cp, "+loop (branch %d)", pc+c.i-param0);
break;
default:
sprintf(cp, "%.*s", pFW->nName, pFW->name);
break;
}
}
else /* probably not a word - punt and print value */
{
sprintf(cp, "%ld ( %#lx )", (long)pc->i, (unsigned long)pc->u);
}
vmTextOut(pVM, pVM->pad, 1);
}
vmTextOut(pVM, ";", 1);
}
/**************************************************************************
** d e b u g P r o m p t
**************************************************************************/
static void debugPrompt(FICL_VM *pVM)
{
vmTextOut(pVM, "dbg> ", 0);
}
static void ficlLoad(FICL_VM *pVM)
{
char cp[nLINEBUF];
char filename[nLINEBUF];
FICL_STRING *pFilename = (FICL_STRING *)filename;
int nLine = 0;
FILE *fp;
int result;
CELL id;
struct stat buf;
vmGetString(pVM, pFilename, '\n');
if (pFilename->count <= 0)
{
vmTextOut(pVM, "Warning (load): nothing happened", 1);
return;
}
/*
** get the file's size and make sure it exists
*/
result = stat( pFilename->text, &buf );
if (result != 0)
{
vmTextOut(pVM, "Unable to stat file: ", 0);
vmTextOut(pVM, pFilename->text, 1);
vmThrow(pVM, VM_QUIT);
}
fp = fopen(pFilename->text, "r");
if (!fp)
{
vmTextOut(pVM, "Unable to open file ", 0);
vmTextOut(pVM, pFilename->text, 1);
vmThrow(pVM, VM_QUIT);
}
id = pVM->sourceID;
pVM->sourceID.p = (void *)fp;
/* feed each line to ficlExec */
while (fgets(cp, nLINEBUF, fp))
{
int len = strlen(cp) - 1;
nLine++;
if (len <= 0)
continue;
result = ficlExecC(pVM, cp, len);
if (result != VM_QUIT && result != VM_USEREXIT && result != VM_OUTOFTEXT )
{
pVM->sourceID = id;
fclose(fp);
vmThrowErr(pVM, "Error loading file <%s> line %d", pFilename->text, nLine);
break;
}
}
/*
** Pass an empty line with SOURCE-ID == -1 to flush
** any pending REFILLs (as required by FILE wordset)
*/
pVM->sourceID.i = -1;
ficlExec(pVM, "");
pVM->sourceID = id;
fclose(fp);
/* handle "bye" in loaded files. --lch */
if (result == VM_USEREXIT)
vmThrow(pVM, VM_USEREXIT);
return;
}
