trunk/doc/pcre_study.3

.TH PCRE_STUDY 3
.SH NAME
PCRE - Perl-compatible regular expressions
.SH SYNOPSIS
.rs
.sp
.B #include <pcre.h>
.PP
.SM
.B pcre_extra *pcre_study(const pcre *\fIcode\fP, int \fIoptions\fP,
.ti +5n
.B const char **\fIerrptr\fP);
.
.SH DESCRIPTION
.rs
.sp
This function studies a compiled pattern, to see if additional information can
be extracted that might speed up matching. Its arguments are:
.sp
  \fIcode\fP       A compiled regular expression
  \fIoptions\fP    Options for \fBpcre_study()\fP
  \fIerrptr\fP     Where to put an error message
.sp
If the function succeeds, it returns a value that can be passed to
\fBpcre_exec()\fP or \fBpcre_dfa_exec()\fP via their \fIextra\fP arguments.
.P
If the function returns NULL, either it could not find any additional
information, or there was an error. You can tell the difference by looking at
the error value. It is NULL in first case.
.P
The only option is PCRE_STUDY_JIT_COMPILE. It requests just-in-time compilation 
if possible. If PCRE has been compiled without JIT support, this option is 
ignored. See the
.\"HREF
\fBpcrejit\fP
.\"
page for further details.
.P
There is a complete description of the PCRE native API in the
.\" HREF
\fBpcreapi\fP
.\"
page and a description of the POSIX API in the
.\" HREF
\fBpcreposix\fP
.\"
page.
1	nigel	79	.TH PCRE_STUDY 3
2	nigel	63	.SH NAME
3			PCRE - Perl-compatible regular expressions
4			.SH SYNOPSIS
5			.rs
6			.sp
7			.B #include <pcre.h>
8			.PP
9			.SM
10	nigel	75	.B pcre_extra pcre_study(const pcre \fIcode\fP, int \fIoptions\fP,
11	nigel	63	.ti +5n
12	nigel	75	.B const char **\fIerrptr\fP);
13			.
14	nigel	63	.SH DESCRIPTION
15			.rs
16			.sp
17			This function studies a compiled pattern, to see if additional information can
18			be extracted that might speed up matching. Its arguments are:
19	nigel	75	.sp
20			\fIcode\fP A compiled regular expression
21			\fIoptions\fP Options for \fBpcre_study()\fP
22			\fIerrptr\fP Where to put an error message
23			.sp
24			If the function succeeds, it returns a value that can be passed to
25	ph10	678	\fBpcre_exec()\fP or \fBpcre_dfa_exec()\fP via their \fIextra\fP arguments.
26	nigel	75	.P
27	nigel	63	If the function returns NULL, either it could not find any additional
28			information, or there was an error. You can tell the difference by looking at
29			the error value. It is NULL in first case.
30	nigel	75	.P
31	ph10	678	The only option is PCRE_STUDY_JIT_COMPILE. It requests just-in-time compilation
32			if possible. If PCRE has been compiled without JIT support, this option is
33			ignored. See the
34			.\"HREF
35			\fBpcrejit\fP
36			.\"
37			page for further details.
38	nigel	75	.P
39			There is a complete description of the PCRE native API in the
40	nigel	63	.\" HREF
41	nigel	75	\fBpcreapi\fP
42	nigel	63	.\"
43	nigel	75	page and a description of the POSIX API in the
44			.\" HREF
45			\fBpcreposix\fP
46			.\"
47	nigel	63	page.
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