void R_CleanUp(SA_TYPE saveact, int status, int runLast)
{
if(saveact == SA_DEFAULT) /* The normal case apart from R_Suicide */
saveact = SaveAction;
if(saveact == SA_SAVEASK) {
if(R_Interactive) {
switch (R_YesNoCancel(G_("Save workspace image?"))) {
case YES:
saveact = SA_SAVE;
break;
case NO:
saveact = SA_NOSAVE;
break;
case CANCEL:
jump_to_toplevel();
break;
}
} else saveact = SaveAction;
}
switch (saveact) {
case SA_SAVE:
if(runLast) R_dot_Last();
if(R_DirtyImage) R_SaveGlobalEnv();
if (CharacterMode == RGui ||
(R_Interactive && CharacterMode == RTerm)) {
R_setupHistory(); /* re-read the history size and filename */
gl_savehistory(R_HistoryFile, R_HistorySize);
}
break;
case SA_NOSAVE:
if(runLast) R_dot_Last();
break;
case SA_SUICIDE:
default:
break;
}
R_RunExitFinalizers();
editorcleanall();
CleanEd();
CleanTempDir();
closeAllHlpFiles();
KillAllDevices();
AllDevicesKilled = TRUE;
if (R_Interactive && CharacterMode == RTerm)
SetConsoleTitle(oldtitle);
UnLoad_Rbitmap_Dll();
if (R_CollectWarnings && saveact != SA_SUICIDE
&& CharacterMode == RTerm)
PrintWarnings();
app_cleanup();
RConsole = NULL;
exit(status);
}
/* use fatal !=0 for emergency bail out */
void Rf_endEmbeddedR(int fatal)
{
R_RunExitFinalizers();
CleanEd();
if(!fatal) KillAllDevices();
R_CleanTempDir();
if(!fatal && R_CollectWarnings)
PrintWarnings(); /* from device close and .Last */
fpu_setup(FALSE);
}
/* use fatal !=0 for emergency bail out */
void Rf_endEmbeddedR(int fatal)
{
R_RunExitFinalizers();
CleanEd();
R_CleanTempDir();
if(!fatal){
Rf_KillAllDevices();
AllDevicesKilled = TRUE;
}
if(!fatal && R_CollectWarnings)
PrintWarnings(); /* from device close and .Last */
app_cleanup();
}
static void R_ReplFile(FILE *fp, SEXP rho)
{
ParseStatus status;
int count=0;
int savestack;
R_InitSrcRefState();
savestack = R_PPStackTop;
for(;;) {
R_PPStackTop = savestack;
R_CurrentExpr = R_Parse1File(fp, 1, &status);
switch (status) {
case PARSE_NULL:
break;
case PARSE_OK:
R_Visible = FALSE;
R_EvalDepth = 0;
resetTimeLimits();
count++;
PROTECT(R_CurrentExpr);
R_CurrentExpr = eval(R_CurrentExpr, rho);
SET_SYMVALUE(R_LastvalueSymbol, R_CurrentExpr);
UNPROTECT(1);
if (R_Visible)
PrintValueEnv(R_CurrentExpr, rho);
if( R_CollectWarnings )
PrintWarnings();
break;
case PARSE_ERROR:
R_FinalizeSrcRefState();
parseError(R_NilValue, R_ParseError);
break;
case PARSE_EOF:
R_FinalizeSrcRefState();
return;
break;
case PARSE_INCOMPLETE:
/* can't happen: just here to quieten -Wall */
break;
}
}
}
/* This is not used in R and in no header */
void
Rf_callToplevelHandlers(SEXP expr, SEXP value, Rboolean succeeded,
Rboolean visible)
{
R_ToplevelCallbackEl *h, *prev = NULL;
Rboolean again;
if(Rf_RunningToplevelHandlers == TRUE)
return;
h = Rf_ToplevelTaskHandlers;
Rf_RunningToplevelHandlers = TRUE;
while(h) {
again = (h->cb)(expr, value, succeeded, visible, h->data);
if(R_CollectWarnings) {
REprintf(_("warning messages from top-level task callback '%s'\n"),
h->name);
PrintWarnings();
}
if(again) {
prev = h;
h = h->next;
} else {
R_ToplevelCallbackEl *tmp;
tmp = h;
if(prev)
prev->next = h->next;
h = h->next;
if(tmp == Rf_ToplevelTaskHandlers)
Rf_ToplevelTaskHandlers = h;
if(tmp->finalizer)
tmp->finalizer(tmp->data);
free(tmp);
}
}
Rf_RunningToplevelHandlers = FALSE;
}
void R_CleanUp(SA_TYPE saveact, int status, int runLast)
{
if(saveact == SA_DEFAULT) /* The normal case apart from R_Suicide */
saveact = SaveAction;
if(saveact == SA_SAVEASK) {
if(R_Interactive) {
switch (R_YesNoCancel(G_("Save workspace image?"))) {
case YES:
saveact = SA_SAVE;
break;
case NO:
saveact = SA_NOSAVE;
break;
case CANCEL:
// There might be residual events with destroyed handles
R_ProcessEvents();
jump_to_toplevel();
break;
}
} else saveact = SaveAction;
}
switch (saveact) {
case SA_SAVE:
if(runLast) R_dot_Last();
if(R_DirtyImage) R_SaveGlobalEnv();
if (CharacterMode == RGui) {
R_setupHistory(); /* re-read the history size and filename */
wgl_savehistory(R_HistoryFile, R_HistorySize);
} else if(R_Interactive && CharacterMode == RTerm) {
R_setupHistory(); /* re-read the history size and filename */
gl_savehistory(R_HistoryFile, R_HistorySize);
}
break;
case SA_NOSAVE:
if(runLast) R_dot_Last();
break;
case SA_SUICIDE:
default:
break;
}
R_RunExitFinalizers();
editorcleanall();
CleanEd();
KillAllDevices(); /* Unix does not do this under SA_SUICIDE */
AllDevicesKilled = TRUE; /* used in devWindows.c to inhibit callbacks */
R_CleanTempDir(); /* changes directory */
if (R_Interactive && CharacterMode == RTerm)
SetConsoleTitle(oldtitle);
if (R_CollectWarnings && saveact != SA_SUICIDE
&& CharacterMode == RTerm) /* no point in doing this for Rgui
as the console is about to close */
PrintWarnings(); /* from device close and (if run) .Last */
app_cleanup();
RConsole = NULL;
if(ifp) fclose(ifp); /* input file from -f or --file= */
if(ifile[0]) unlink(ifile); /* input file from -e */
exit(status);
}
void attribute_hidden Rstd_CleanUp(SA_TYPE saveact, int status, int runLast)
{
if(saveact == SA_DEFAULT) /* The normal case apart from R_Suicide */
saveact = SaveAction;
if(saveact == SA_SAVEASK) {
if(R_Interactive) {
unsigned char buf[1024];
qask:
R_ClearerrConsole();
R_FlushConsole();
int res = R_ReadConsole("Save workspace image? [y/n/c]: ",
buf, 128, 0);
if(res) {
switch (buf[0]) {
case 'y':
case 'Y':
saveact = SA_SAVE;
break;
case 'n':
case 'N':
saveact = SA_NOSAVE;
break;
case 'c':
case 'C':
jump_to_toplevel();
break;
default:
goto qask;
}
} else saveact = SA_NOSAVE; /* probably EOF */
} else
saveact = SaveAction;
}
switch (saveact) {
case SA_SAVE:
if(runLast) R_dot_Last();
if(R_DirtyImage) R_SaveGlobalEnv();
#ifdef HAVE_LIBREADLINE
# ifdef HAVE_READLINE_HISTORY_H
if(R_Interactive && UsingReadline) {
int err;
R_setupHistory(); /* re-read the history size and filename */
stifle_history(R_HistorySize);
err = write_history(R_HistoryFile);
if(err) warning(_("problem in saving the history file '%s'"),
R_HistoryFile);
}
# endif /* HAVE_READLINE_HISTORY_H */
#endif /* HAVE_LIBREADLINE */
break;
case SA_NOSAVE:
if(runLast) R_dot_Last();
break;
case SA_SUICIDE:
default:
break;
}
R_RunExitFinalizers();
CleanEd();
if(saveact != SA_SUICIDE) KillAllDevices();
R_CleanTempDir();
if(saveact != SA_SUICIDE && R_CollectWarnings)
PrintWarnings(); /* from device close and (if run) .Last */
if(ifp) fclose(ifp); /* input file from -f or --file= */
fpu_setup(FALSE);
exit(status);
}
void setup_Rmainloop(void)
{
volatile int doneit;
volatile SEXP baseEnv;
SEXP cmd;
char deferred_warnings[11][250];
volatile int ndeferred_warnings = 0;
/* In case this is a silly limit: 2^32 -3 has been seen and
* casting to intptr_r relies on this being smaller than 2^31 on a
* 32-bit platform. */
if(R_CStackLimit > 100000000U)
R_CStackLimit = (uintptr_t)-1;
/* make sure we have enough head room to handle errors */
if(R_CStackLimit != -1)
R_CStackLimit = (uintptr_t)(0.95 * R_CStackLimit);
InitConnections(); /* needed to get any output at all */
/* Initialize the interpreter's internal structures. */
#ifdef HAVE_LOCALE_H
#ifdef Win32
{
char *p, Rlocale[1000]; /* Windows' locales can be very long */
p = getenv("LC_ALL");
strncpy(Rlocale, p ? p : "", 1000);
Rlocale[1000 - 1] = '\0';
if(!(p = getenv("LC_CTYPE"))) p = Rlocale;
/* We'd like to use warning, but need to defer.
Also cannot translate. */
if(!setlocale(LC_CTYPE, p))
snprintf(deferred_warnings[ndeferred_warnings++], 250,
"Setting LC_CTYPE=%s failed\n", p);
if((p = getenv("LC_COLLATE"))) {
if(!setlocale(LC_COLLATE, p))
snprintf(deferred_warnings[ndeferred_warnings++], 250,
"Setting LC_COLLATE=%s failed\n", p);
} else setlocale(LC_COLLATE, Rlocale);
if((p = getenv("LC_TIME"))) {
if(!setlocale(LC_TIME, p))
snprintf(deferred_warnings[ndeferred_warnings++], 250,
"Setting LC_TIME=%s failed\n", p);
} else setlocale(LC_TIME, Rlocale);
if((p = getenv("LC_MONETARY"))) {
if(!setlocale(LC_MONETARY, p))
snprintf(deferred_warnings[ndeferred_warnings++], 250,
"Setting LC_MONETARY=%s failed\n", p);
} else setlocale(LC_MONETARY, Rlocale);
/* Windows does not have LC_MESSAGES */
/* We set R_ARCH here: Unix does it in the shell front-end */
char Rarch[30];
strcpy(Rarch, "R_ARCH=/");
strcat(Rarch, R_ARCH);
putenv(Rarch);
}
#else /* not Win32 */
if(!setlocale(LC_CTYPE, ""))
snprintf(deferred_warnings[ndeferred_warnings++], 250,
"Setting LC_CTYPE failed, using \"C\"\n");
if(!setlocale(LC_COLLATE, ""))
snprintf(deferred_warnings[ndeferred_warnings++], 250,
"Setting LC_COLLATE failed, using \"C\"\n");
if(!setlocale(LC_TIME, ""))
snprintf(deferred_warnings[ndeferred_warnings++], 250,
"Setting LC_TIME failed, using \"C\"\n");
#ifdef ENABLE_NLS
if(!setlocale(LC_MESSAGES, ""))
snprintf(deferred_warnings[ndeferred_warnings++], 250,
"Setting LC_MESSAGES failed, using \"C\"\n");
#endif
/* NB: we do not set LC_NUMERIC */
#ifdef LC_MONETARY
if(!setlocale(LC_MONETARY, ""))
snprintf(deferred_warnings[ndeferred_warnings++], 250,
"Setting LC_MONETARY failed, using \"C\"\n");
#endif
#ifdef LC_PAPER
if(!setlocale(LC_PAPER, ""))
snprintf(deferred_warnings[ndeferred_warnings++], 250,
"Setting LC_PAPER failed, using \"C\"\n");
#endif
#ifdef LC_MEASUREMENT
if(!setlocale(LC_MEASUREMENT, ""))
snprintf(deferred_warnings[ndeferred_warnings++], 250,
"Setting LC_MEASUREMENT failed, using \"C\"\n");
#endif
#endif /* not Win32 */
#endif
/* make sure srand is called before R_tmpnam, PR#14381 */
srand(TimeToSeed());
InitArithmetic();
InitParser();
InitTempDir(); /* must be before InitEd */
InitMemory();
InitStringHash(); /* must be before InitNames */
InitNames();
InitBaseEnv();
InitGlobalEnv();
InitDynload();
InitOptions();
InitEd();
InitGraphics();
InitTypeTables(); /* must be before InitS3DefaultTypes */
InitS3DefaultTypes();
R_Is_Running = 1;
R_check_locale();
/* Initialize the global context for error handling. */
/* This provides a target for any non-local gotos */
/* which occur during error handling */
R_Toplevel.nextcontext = NULL;
R_Toplevel.callflag = CTXT_TOPLEVEL;
R_Toplevel.cstacktop = 0;
R_Toplevel.promargs = R_NilValue;
R_Toplevel.callfun = R_NilValue;
R_Toplevel.call = R_NilValue;
R_Toplevel.cloenv = R_BaseEnv;
R_Toplevel.sysparent = R_BaseEnv;
R_Toplevel.conexit = R_NilValue;
R_Toplevel.vmax = NULL;
R_Toplevel.nodestack = R_BCNodeStackTop;
#ifdef BC_INT_STACK
R_Toplevel.intstack = R_BCIntStackTop;
#endif
R_Toplevel.cend = NULL;
R_Toplevel.intsusp = FALSE;
R_Toplevel.handlerstack = R_HandlerStack;
R_Toplevel.restartstack = R_RestartStack;
R_Toplevel.srcref = R_NilValue;
R_GlobalContext = R_ToplevelContext = R_SessionContext = &R_Toplevel;
R_ExitContext = NULL;
R_Warnings = R_NilValue;
/* This is the same as R_BaseEnv, but this marks the environment
of functions as the namespace and not the package. */
baseEnv = R_BaseNamespace;
/* Set up some global variables */
Init_R_Variables(baseEnv);
/* On initial entry we open the base language package and begin by
running the repl on it.
If there is an error we pass on to the repl.
Perhaps it makes more sense to quit gracefully?
*/
#ifdef RMIN_ONLY
/* This is intended to support a minimal build for experimentation. */
if (R_SignalHandlers) init_signal_handlers();
#else
FILE *fp = R_OpenLibraryFile("base");
if (fp == NULL)
R_Suicide(_("unable to open the base package\n"));
doneit = 0;
SETJMP(R_Toplevel.cjmpbuf);
R_GlobalContext = R_ToplevelContext = R_SessionContext = &R_Toplevel;
if (R_SignalHandlers) init_signal_handlers();
if (!doneit) {
doneit = 1;
R_ReplFile(fp, baseEnv);
}
fclose(fp);
#endif
/* This is where we source the system-wide, the site's and the
user's profile (in that order). If there is an error, we
drop through to further processing.
*/
R_IoBufferInit(&R_ConsoleIob);
R_LoadProfile(R_OpenSysInitFile(), baseEnv);
/* These are the same bindings, so only lock them once */
R_LockEnvironment(R_BaseNamespace, TRUE);
#ifdef NOTYET
/* methods package needs to trample here */
R_LockEnvironment(R_BaseEnv, TRUE);
#endif
/* At least temporarily unlock some bindings used in graphics */
R_unLockBinding(R_DeviceSymbol, R_BaseEnv);
R_unLockBinding(R_DevicesSymbol, R_BaseEnv);
R_unLockBinding(install(".Library.site"), R_BaseEnv);
/* require(methods) if it is in the default packages */
doneit = 0;
SETJMP(R_Toplevel.cjmpbuf);
R_GlobalContext = R_ToplevelContext = R_SessionContext = &R_Toplevel;
if (!doneit) {
doneit = 1;
PROTECT(cmd = install(".OptRequireMethods"));
R_CurrentExpr = findVar(cmd, R_GlobalEnv);
if (R_CurrentExpr != R_UnboundValue &&
TYPEOF(R_CurrentExpr) == CLOSXP) {
PROTECT(R_CurrentExpr = lang1(cmd));
R_CurrentExpr = eval(R_CurrentExpr, R_GlobalEnv);
UNPROTECT(1);
}
UNPROTECT(1);
}
if (strcmp(R_GUIType, "Tk") == 0) {
char buf[PATH_MAX];
snprintf(buf, PATH_MAX, "%s/library/tcltk/exec/Tk-frontend.R", R_Home);
R_LoadProfile(R_fopen(buf, "r"), R_GlobalEnv);
}
/* Print a platform and version dependent greeting and a pointer to
* the copyleft.
*/
if(!R_Quiet) PrintGreeting();
R_LoadProfile(R_OpenSiteFile(), baseEnv);
R_LockBinding(install(".Library.site"), R_BaseEnv);
R_LoadProfile(R_OpenInitFile(), R_GlobalEnv);
/* This is where we try to load a user's saved data.
The right thing to do here is very platform dependent.
E.g. under Unix we look in a special hidden file and on the Mac
we look in any documents which might have been double clicked on
or dropped on the application.
*/
doneit = 0;
SETJMP(R_Toplevel.cjmpbuf);
R_GlobalContext = R_ToplevelContext = R_SessionContext = &R_Toplevel;
if (!doneit) {
doneit = 1;
R_InitialData();
}
else {
if (! SETJMP(R_Toplevel.cjmpbuf)) {
warning(_("unable to restore saved data in %s\n"), get_workspace_name());
}
}
/* Initial Loading is done.
At this point we try to invoke the .First Function.
If there is an error we continue. */
doneit = 0;
SETJMP(R_Toplevel.cjmpbuf);
R_GlobalContext = R_ToplevelContext = R_SessionContext = &R_Toplevel;
if (!doneit) {
doneit = 1;
PROTECT(cmd = install(".First"));
R_CurrentExpr = findVar(cmd, R_GlobalEnv);
if (R_CurrentExpr != R_UnboundValue &&
TYPEOF(R_CurrentExpr) == CLOSXP) {
PROTECT(R_CurrentExpr = lang1(cmd));
R_CurrentExpr = eval(R_CurrentExpr, R_GlobalEnv);
UNPROTECT(1);
}
UNPROTECT(1);
}
/* Try to invoke the .First.sys function, which loads the default packages.
If there is an error we continue. */
doneit = 0;
SETJMP(R_Toplevel.cjmpbuf);
R_GlobalContext = R_ToplevelContext = R_SessionContext = &R_Toplevel;
if (!doneit) {
doneit = 1;
PROTECT(cmd = install(".First.sys"));
R_CurrentExpr = findVar(cmd, baseEnv);
if (R_CurrentExpr != R_UnboundValue &&
TYPEOF(R_CurrentExpr) == CLOSXP) {
PROTECT(R_CurrentExpr = lang1(cmd));
R_CurrentExpr = eval(R_CurrentExpr, R_GlobalEnv);
UNPROTECT(1);
}
UNPROTECT(1);
}
{
int i;
for(i = 0 ; i < ndeferred_warnings; i++)
warning(deferred_warnings[i]);
}
if (R_CollectWarnings) {
REprintf(_("During startup - "));
PrintWarnings();
}
/* trying to do this earlier seems to run into bootstrapping issues. */
R_init_jit_enabled();
R_Is_Running = 2;
}
/* FIXME: this should be re-written to use Rf_ReplIteration
since it gets out of sync with it over time */
int R_ReplDLLdo1(void)
{
int c;
ParseStatus status;
SEXP rho = R_GlobalEnv, lastExpr;
Rboolean wasDisplayed = FALSE;
if(!*DLLbufp) {
R_Busy(0);
if (R_ReadConsole(R_PromptString(0, prompt_type), DLLbuf,
CONSOLE_BUFFER_SIZE, 1) == 0)
return -1;
DLLbufp = DLLbuf;
}
while((c = *DLLbufp++)) {
R_IoBufferPutc(c, &R_ConsoleIob);
if(c == ';' || c == '\n') break;
}
R_PPStackTop = 0;
R_CurrentExpr = R_Parse1Buffer(&R_ConsoleIob, 0, &status);
switch(status) {
case PARSE_NULL:
R_IoBufferWriteReset(&R_ConsoleIob);
prompt_type = 1;
break;
case PARSE_OK:
R_IoBufferReadReset(&R_ConsoleIob);
R_CurrentExpr = R_Parse1Buffer(&R_ConsoleIob, 1, &status);
R_Visible = FALSE;
R_EvalDepth = 0;
resetTimeLimits();
PROTECT(R_CurrentExpr);
R_Busy(1);
lastExpr = R_CurrentExpr;
R_CurrentExpr = eval(R_CurrentExpr, rho);
SET_SYMVALUE(R_LastvalueSymbol, R_CurrentExpr);
wasDisplayed = R_Visible;
if (R_Visible)
PrintValueEnv(R_CurrentExpr, rho);
if (R_CollectWarnings)
PrintWarnings();
Rf_callToplevelHandlers(lastExpr, R_CurrentExpr, TRUE, wasDisplayed);
UNPROTECT(1);
R_IoBufferWriteReset(&R_ConsoleIob);
R_Busy(0);
prompt_type = 1;
break;
case PARSE_ERROR:
parseError(R_NilValue, 0);
R_IoBufferWriteReset(&R_ConsoleIob);
prompt_type = 1;
break;
case PARSE_INCOMPLETE:
R_IoBufferReadReset(&R_ConsoleIob);
prompt_type = 2;
break;
case PARSE_EOF:
return -1;
break;
}
return prompt_type;
}
/**
This is the body of the REPL.
It attempts to parse the first line or expression of its input,
and optionally request input from the user if none is available.
If the input can be parsed correctly,
i) the resulting expression is evaluated,
ii) the result assigned to .Last.Value,
iii) top-level task handlers are invoked.
If the input cannot be parsed, i.e. there is a syntax error,
it is incomplete, or we encounter an end-of-file, then we
change the prompt accordingly.
The "cursor" for the input buffer is moved to the next starting
point, i.e. the end of the first line or after the first ;.
*/
int
Rf_ReplIteration(SEXP rho, int savestack, int browselevel, R_ReplState *state)
{
int c, browsevalue;
SEXP value, thisExpr;
Rboolean wasDisplayed = FALSE;
if(!*state->bufp) {
R_Busy(0);
if (R_ReadConsole(R_PromptString(browselevel, state->prompt_type),
state->buf, CONSOLE_BUFFER_SIZE, 1) == 0)
return(-1);
state->bufp = state->buf;
}
#ifdef SHELL_ESCAPE /* not default */
if (*state->bufp == '!') {
R_system(&(state->buf[1]));
state->buf[0] = '\0';
return(0);
}
#endif /* SHELL_ESCAPE */
while((c = *state->bufp++)) {
R_IoBufferPutc(c, &R_ConsoleIob);
if(c == ';' || c == '\n') break;
}
R_PPStackTop = savestack;
R_CurrentExpr = R_Parse1Buffer(&R_ConsoleIob, 0, &state->status);
switch(state->status) {
case PARSE_NULL:
/* The intention here is to break on CR but not on other
null statements: see PR#9063 */
if (browselevel && !R_DisableNLinBrowser
&& !strcmp((char *) state->buf, "\n")) return -1;
R_IoBufferWriteReset(&R_ConsoleIob);
state->prompt_type = 1;
return 1;
case PARSE_OK:
R_IoBufferReadReset(&R_ConsoleIob);
R_CurrentExpr = R_Parse1Buffer(&R_ConsoleIob, 1, &state->status);
if (browselevel) {
browsevalue = ParseBrowser(R_CurrentExpr, rho);
if(browsevalue == 1) return -1;
if(browsevalue == 2) {
R_IoBufferWriteReset(&R_ConsoleIob);
return 0;
}
/* PR#15770 We don't want to step into expressions entered at the debug prompt.
The 'S' will be changed back to 's' after the next eval. */
if (R_BrowserLastCommand == 's') R_BrowserLastCommand = 'S';
}
R_Visible = FALSE;
R_EvalDepth = 0;
resetTimeLimits();
PROTECT(thisExpr = R_CurrentExpr);
R_Busy(1);
value = eval(thisExpr, rho);
SET_SYMVALUE(R_LastvalueSymbol, value);
wasDisplayed = R_Visible;
if (R_Visible)
PrintValueEnv(value, rho);
if (R_CollectWarnings)
PrintWarnings();
Rf_callToplevelHandlers(thisExpr, value, TRUE, wasDisplayed);
R_CurrentExpr = value; /* Necessary? Doubt it. */
UNPROTECT(1);
if (R_BrowserLastCommand == 'S') R_BrowserLastCommand = 's';
R_IoBufferWriteReset(&R_ConsoleIob);
state->prompt_type = 1;
return(1);
case PARSE_ERROR:
state->prompt_type = 1;
parseError(R_NilValue, 0);
R_IoBufferWriteReset(&R_ConsoleIob);
return(1);
case PARSE_INCOMPLETE:
R_IoBufferReadReset(&R_ConsoleIob);
state->prompt_type = 2;
return(2);
case PARSE_EOF:
return(-1);
break;
}
return(0);
}