[OpenSPARC-T2-SAM] / sam-t2 / devtools / v8plus / man / man3 / Tcl_NewBooleanObj.3

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'\" The definitions below are for supplemental macros used in Tcl/Tk
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.TH Tcl_BooleanObj 3 8.0 Tcl "Tcl Library Procedures"
.BS
.SH NAME
Tcl_NewBooleanObj, Tcl_SetBooleanObj, Tcl_GetBooleanFromObj \- manipulate Tcl objects as boolean values
.SH SYNOPSIS
.nf
\fB#include <tcl.h>\fR
.sp
Tcl_Obj *
\fBTcl_NewBooleanObj\fR(\fIboolValue\fR)
.sp
\fBTcl_SetBooleanObj\fR(\fIobjPtr, boolValue\fR)
.sp
int
\fBTcl_GetBooleanFromObj\fR(\fIinterp, objPtr, boolPtr\fR)
.SH ARGUMENTS
.AS Tcl_Interp *interp
.AP int boolValue in
Integer value used to initialize or set a boolean object.
If the integer is nonzero, the boolean object is set to 1;
otherwise the boolean object is set to 0.
.AP Tcl_Obj *objPtr in/out
For \fBTcl_SetBooleanObj\fR, this points to the object to be converted
to boolean type.
For \fBTcl_GetBooleanFromObj\fR, this refers to the object
from which to get a boolean value; 
if \fIobjPtr\fR does not already point to a boolean object,
an attempt will be made to convert it to one.
.AP Tcl_Interp *interp in/out
If an error occurs during conversion,
an error message is left in the interpreter's result object
unless \fIinterp\fR is NULL.
.AP int *boolPtr out
Points to place where \fBTcl_GetBooleanFromObj\fR
stores the boolean value (0 or 1) obtained from \fIobjPtr\fR.
.BE

.SH DESCRIPTION
.PP
These procedures are used to create, modify, and read
boolean Tcl objects from C code.
\fBTcl_NewBooleanObj\fR and \fBTcl_SetBooleanObj\fR
will create a new object of boolean type
or modify an existing object to have boolean type. 
Both of these procedures set the object to have the
boolean value (0 or 1) specified by \fIboolValue\fR;
if \fIboolValue\fR is nonzero, the object is set to 1,
otherwise to 0.
\fBTcl_NewBooleanObj\fR returns a pointer to a newly created object
with reference count zero.
Both procedures set the object's type to be boolean
and assign the boolean value to the object's internal representation
\fIlongValue\fR member.
\fBTcl_SetBooleanObj\fR invalidates any old string representation
and, if the object is not already a boolean object,
frees any old internal representation.
.PP
\fBTcl_GetBooleanFromObj\fR attempts to return a boolean value
from the Tcl object \fIobjPtr\fR.
If the object is not already a boolean object,
it will attempt to convert it to one.
If an error occurs during conversion, it returns \fBTCL_ERROR\fR
and leaves an error message in the interpreter's result object
unless \fIinterp\fR is NULL.
Otherwise, \fBTcl_GetBooleanFromObj\fR returns \fBTCL_OK\fR
and stores the boolean value in the address given by \fIboolPtr\fR.
If the object is not already a boolean object,
the conversion will free any old internal representation.
Objects having a string representation equal to any of \fB0\fR,
\fBfalse\fR, \fBno\fR, or \fBoff\fR have a boolean value 0; if the
string representation is any of \fB1\fR, \fBtrue\fR, \fByes\fR, or
\fBon\fR the boolean value is 1.
Any of these string values may be abbreviated, and upper-case spellings
are also acceptable.

.SH "SEE ALSO"
Tcl_NewObj, Tcl_DecrRefCount, Tcl_IncrRefCount, Tcl_GetObjResult

.SH KEYWORDS
boolean, boolean object, boolean type, internal representation, object, object type, string representation
Commit	Line	Data
920dae64 AT	1	'\"
	2	'\" Copyright (c) 1996-1997 Sun Microsystems, Inc.
	3	'\"
	4	'\" See the file "license.terms" for information on usage and redistribution
	5	'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
	6	'\"
	7	'\" RCS: @(#) $Id: BoolObj.3,v 1.3 2002/08/07 17:13:56 msofer Exp $
	8	'\"
	9	'\" The definitions below are for supplemental macros used in Tcl/Tk
	10	'\" manual entries.
	11	'\"
	12	'\" .AP type name in/out ?indent?
	13	'\" Start paragraph describing an argument to a library procedure.
	14	'\" type is type of argument (int, etc.), in/out is either "in", "out",
	15	'\" or "in/out" to describe whether procedure reads or modifies arg,
	16	'\" and indent is equivalent to second arg of .IP (shouldn't ever be
	17	'\" needed; use .AS below instead)
	18	'\"
	19	'\" .AS ?type? ?name?
	20	'\" Give maximum sizes of arguments for setting tab stops. Type and
	21	'\" name are examples of largest possible arguments that will be passed
	22	'\" to .AP later. If args are omitted, default tab stops are used.
	23	'\"
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	26	'\" enclosed in one large box.
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	39	'\" of man pages. The first argument is ignored and used for recording
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	42	'\" is present, then a line break is forced before starting the sidebar.
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	55	'\" options follow on successive lines, in four columns separated
	56	'\" by tabs.
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	60	'\"
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	63	'\" option's name as specified in the class command, dbName gives
	64	'\" the option's name in the option database, and dbClass gives
65	'\" the option's class in the option database.
66	'\"
67	'\" .UL arg1 arg2
68	'\" Print arg1 underlined, then print arg2 normally.
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70	'\" RCS: @(#) $Id: man.macros,v 1.4 2000/08/25 06:18:32 ericm Exp $
71	'\"
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73	.if t .wh -1.3i ^B
74	.nr ^l \n(.l
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78	.ie !"\\$4"" .TP \\$4
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244	..
245	.TH Tcl_BooleanObj 3 8.0 Tcl "Tcl Library Procedures"
246	.BS
247	.SH NAME
248	Tcl_NewBooleanObj, Tcl_SetBooleanObj, Tcl_GetBooleanFromObj \- manipulate Tcl objects as boolean values
249	.SH SYNOPSIS
250	.nf
251	\fB#include <tcl.h>\fR
252	.sp
253	Tcl_Obj *
254	\fBTcl_NewBooleanObj\fR(\fIboolValue\fR)
255	.sp
256	\fBTcl_SetBooleanObj\fR(\fIobjPtr, boolValue\fR)
257	.sp
258	int
259	\fBTcl_GetBooleanFromObj\fR(\fIinterp, objPtr, boolPtr\fR)
260	.SH ARGUMENTS
261	.AS Tcl_Interp *interp
262	.AP int boolValue in
263	Integer value used to initialize or set a boolean object.
264	If the integer is nonzero, the boolean object is set to 1;
265	otherwise the boolean object is set to 0.
266	.AP Tcl_Obj *objPtr in/out
267	For \fBTcl_SetBooleanObj\fR, this points to the object to be converted
268	to boolean type.
269	For \fBTcl_GetBooleanFromObj\fR, this refers to the object
270	from which to get a boolean value;
271	if \fIobjPtr\fR does not already point to a boolean object,
272	an attempt will be made to convert it to one.
273	.AP Tcl_Interp *interp in/out
274	If an error occurs during conversion,
275	an error message is left in the interpreter's result object
276	unless \fIinterp\fR is NULL.
277	.AP int *boolPtr out
278	Points to place where \fBTcl_GetBooleanFromObj\fR
279	stores the boolean value (0 or 1) obtained from \fIobjPtr\fR.
280	.BE
281
282	.SH DESCRIPTION
283	.PP
284	These procedures are used to create, modify, and read
285	boolean Tcl objects from C code.
286	\fBTcl_NewBooleanObj\fR and \fBTcl_SetBooleanObj\fR
287	will create a new object of boolean type
288	or modify an existing object to have boolean type.
289	Both of these procedures set the object to have the
290	boolean value (0 or 1) specified by \fIboolValue\fR;
291	if \fIboolValue\fR is nonzero, the object is set to 1,
292	otherwise to 0.
293	\fBTcl_NewBooleanObj\fR returns a pointer to a newly created object
294	with reference count zero.
295	Both procedures set the object's type to be boolean
296	and assign the boolean value to the object's internal representation
297	\fIlongValue\fR member.
298	\fBTcl_SetBooleanObj\fR invalidates any old string representation
299	and, if the object is not already a boolean object,
300	frees any old internal representation.
301	.PP
302	\fBTcl_GetBooleanFromObj\fR attempts to return a boolean value
303	from the Tcl object \fIobjPtr\fR.
304	If the object is not already a boolean object,
305	it will attempt to convert it to one.
306	If an error occurs during conversion, it returns \fBTCL_ERROR\fR
307	and leaves an error message in the interpreter's result object
308	unless \fIinterp\fR is NULL.
309	Otherwise, \fBTcl_GetBooleanFromObj\fR returns \fBTCL_OK\fR
310	and stores the boolean value in the address given by \fIboolPtr\fR.
311	If the object is not already a boolean object,
312	the conversion will free any old internal representation.
313	Objects having a string representation equal to any of \fB0\fR,
314	\fBfalse\fR, \fBno\fR, or \fBoff\fR have a boolean value 0; if the
315	string representation is any of \fB1\fR, \fBtrue\fR, \fByes\fR, or
316	\fBon\fR the boolean value is 1.
317	Any of these string values may be abbreviated, and upper-case spellings
318	are also acceptable.
319
320	.SH "SEE ALSO"
321	Tcl_NewObj, Tcl_DecrRefCount, Tcl_IncrRefCount, Tcl_GetObjResult
322
323	.SH KEYWORDS
324	boolean, boolean object, boolean type, internal representation, object, object type, string representation