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update description of HS_FLAG_SOM_LEFTMOST to eliminate ambiguity

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Hong, Yang A 2020-04-16 12:16:14 +00:00
parent 8344395bfd
commit 22991f2da1
2 changed files with 4 additions and 4 deletions
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4
doc/dev-reference/compilation.rst
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@ -55,7 +55,7 @@ Hyperscan provides support for targeting a database at a particular CPU
platform; see :ref:`instr_specialization` for details. platform; see :ref:`instr_specialization` for details.
===================== =====================
Compile Pure Literals Compile Pure Literals
===================== =====================
Pure literal is a special case of regular expression. A character sequence is Pure literal is a special case of regular expression. A character sequence is
@ -98,7 +98,7 @@ In ``v5.2.0``, Hyperscan introduces 2 new compile APIs for pure literal patterns
#. :c:func:`hs_compile_lit_multi`: compiles an array of pure literals into a #. :c:func:`hs_compile_lit_multi`: compiles an array of pure literals into a
pattern database. All of the supplied patterns will be scanned for pattern database. All of the supplied patterns will be scanned for
concurrently at scan time, with user-supplied identifiers returned when they concurrently at scan time, with user-supplied identifiers returned when they
match. match.
These 2 APIs are designed for use cases where all patterns contained in the These 2 APIs are designed for use cases where all patterns contained in the
target rule set are pure literals. Users can pass the initial pure literal target rule set are pure literals. Users can pass the initial pure literal

4
src/hs_compile.h
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@ -985,8 +985,8 @@ hs_error_t HS_CDECL hs_populate_platform(hs_platform_info_t *platform);
* offset when a match is reported for this expression. (By default, no start * offset when a match is reported for this expression. (By default, no start
* of match is returned.) * of match is returned.)
* *
* Enabling this behaviour may reduce performance and increase stream state * For all the 3 modes, enabling this behaviour may reduce performance. And
* requirements in streaming mode. * particularly, it may increase stream state requirements in streaming mode.
*/ */
#define HS_FLAG_SOM_LEFTMOST 256 #define HS_FLAG_SOM_LEFTMOST 256