3 <title>pcre_jit_exec specification</title>
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6 <h1>pcre_jit_exec man page</h1>
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19 <b>#include <pcre.h></b>
22 <b>int pcre_jit_exec(const pcre *<i>code</i>, const pcre_extra *<i>extra</i>,</b>
23 <b> const char *<i>subject</i>, int <i>length</i>, int <i>startoffset</i>,</b>
24 <b> int <i>options</i>, int *<i>ovector</i>, int <i>ovecsize</i>,</b>
25 <b> pcre_jit_stack *<i>jstack</i>);</b>
28 <b>int pcre16_jit_exec(const pcre16 *<i>code</i>, const pcre16_extra *<i>extra</i>,</b>
29 <b> PCRE_SPTR16 <i>subject</i>, int <i>length</i>, int <i>startoffset</i>,</b>
30 <b> int <i>options</i>, int *<i>ovector</i>, int <i>ovecsize</i>,</b>
31 <b> pcre_jit_stack *<i>jstack</i>);</b>
34 <b>int pcre32_jit_exec(const pcre32 *<i>code</i>, const pcre32_extra *<i>extra</i>,</b>
35 <b> PCRE_SPTR32 <i>subject</i>, int <i>length</i>, int <i>startoffset</i>,</b>
36 <b> int <i>options</i>, int *<i>ovector</i>, int <i>ovecsize</i>,</b>
37 <b> pcre_jit_stack *<i>jstack</i>);</b>
43 This function matches a compiled regular expression that has been successfully
44 studied with one of the JIT options against a given subject string, using a
45 matching algorithm that is similar to Perl's. It is a "fast path" interface to
46 JIT, and it bypasses some of the sanity checks that <b>pcre_exec()</b> applies.
47 It returns offsets to captured substrings. Its arguments are:
49 <i>code</i> Points to the compiled pattern
50 <i>extra</i> Points to an associated <b>pcre[16|32]_extra</b> structure,
52 <i>subject</i> Points to the subject string
53 <i>length</i> Length of the subject string, in bytes
54 <i>startoffset</i> Offset in bytes in the subject at which to
56 <i>options</i> Option bits
57 <i>ovector</i> Points to a vector of ints for result offsets
58 <i>ovecsize</i> Number of elements in the vector (a multiple of 3)
59 <i>jstack</i> Pointer to a JIT stack
61 The allowed options are:
63 PCRE_NOTBOL Subject string is not the beginning of a line
64 PCRE_NOTEOL Subject string is not the end of a line
65 PCRE_NOTEMPTY An empty string is not a valid match
66 PCRE_NOTEMPTY_ATSTART An empty string at the start of the subject
68 PCRE_NO_UTF16_CHECK Do not check the subject for UTF-16
69 validity (only relevant if PCRE_UTF16
70 was set at compile time)
71 PCRE_NO_UTF32_CHECK Do not check the subject for UTF-32
72 validity (only relevant if PCRE_UTF32
73 was set at compile time)
74 PCRE_NO_UTF8_CHECK Do not check the subject for UTF-8
75 validity (only relevant if PCRE_UTF8
76 was set at compile time)
77 PCRE_PARTIAL ) Return PCRE_ERROR_PARTIAL for a partial
78 PCRE_PARTIAL_SOFT ) match if no full matches are found
79 PCRE_PARTIAL_HARD Return PCRE_ERROR_PARTIAL for a partial match
80 if that is found before a full match
82 However, the PCRE_NO_UTF[8|16|32]_CHECK options have no effect, as this check
83 is never applied. For details of partial matching, see the
84 <a href="pcrepartial.html"><b>pcrepartial</b></a>
85 page. A <b>pcre_extra</b> structure contains the following fields:
87 <i>flags</i> Bits indicating which fields are set
88 <i>study_data</i> Opaque data from <b>pcre[16|32]_study()</b>
89 <i>match_limit</i> Limit on internal resource use
90 <i>match_limit_recursion</i> Limit on internal recursion depth
91 <i>callout_data</i> Opaque data passed back to callouts
92 <i>tables</i> Points to character tables or is NULL
93 <i>mark</i> For passing back a *MARK pointer
94 <i>executable_jit</i> Opaque data from JIT compilation
96 The flag bits are PCRE_EXTRA_STUDY_DATA, PCRE_EXTRA_MATCH_LIMIT,
97 PCRE_EXTRA_MATCH_LIMIT_RECURSION, PCRE_EXTRA_CALLOUT_DATA,
98 PCRE_EXTRA_TABLES, PCRE_EXTRA_MARK and PCRE_EXTRA_EXECUTABLE_JIT.
101 There is a complete description of the PCRE native API in the
102 <a href="pcreapi.html"><b>pcreapi</b></a>
103 page and a description of the JIT API in the
104 <a href="pcrejit.html"><b>pcrejit</b></a>
107 Return to the <a href="index.html">PCRE index page</a>.