Invention Grant
US09047343B2 Find regular expression instruction on substring of larger string
有权
在较大字符串的子字符串上查找正则表达式指令
- Patent Title: Find regular expression instruction on substring of larger string
- Patent Title (中): 在较大字符串的子字符串上查找正则表达式指令
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Application No.: US13741652Application Date: 2013-01-15
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Publication No.: US09047343B2Publication Date: 2015-06-02
- Inventor: Eric M. Schwarz
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Cantor Colburn LLP
- Agent Margaret McNamara
- Main IPC: G06F7/00
- IPC: G06F7/00 ; G06F17/30

Abstract:
A technique for pattern matching is provided. A processing circuit receives an input string streamed in as input, and the input string is designated into substrings according to predefined bytes. A first substring of the substrings is in a first register to be compared against a pattern of the predefined bytes in a second register. The processing circuit compares the first substring in the first register to the pattern in the second register according to a type of evaluations specified in a third register, and determines state information that includes a number of states achieved for the pattern based on the comparison. The state information is stored in a fourth register to be utilized in a next run for a next substring of the substrings making up the input string, where the next run builds from the state information in the fourth register.
Public/Granted literature
- US20140201224A1 FIND REGULAR EXPRESSION INSTRUCTION ON SUBSTRING OF LARGER STRING Public/Granted day:2014-07-17
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