Issue2408

classification

Title:	Redo sre port for regular expression support
Type:		Severity:	normal
Components:		Versions:	Jython 2.7
		Milestone:

process

Status:	open	Resolution:
Dependencies:		Superseder:
Assigned To:		Nosy List:	zyasoft
Priority:	normal	Keywords:

Created on 2015-10-07.23:04:06 by zyasoft, last changed 2015-10-07.23:04:06 by zyasoft.

Messages
msg10325 (view)	Author: Jim Baker (zyasoft)	Date: 2015-10-07.23:04:06
CPython and Jython both share the same implementation of the sre regex engine, which the re module uses by compiling to sre bytecodes. Our current port of sre dates back to CPython 2.1, then subsequently updated. However, there are enough subtle differences - missing sre bytecodes, unimplemented optimzations for unicode, direct use of the Java stack, and for complex REs, divergent performance - that we should revisit. Also, this will be a good opportunity to stop expanding unicode into codepoint arrays.

msg10325 (view)

Author: Jim Baker (zyasoft)

Date: 2015-10-07.23:04:06

CPython and Jython both share the same implementation of the sre regex engine, which the re module uses by compiling to sre bytecodes.

Our current port of sre dates back to CPython 2.1, then subsequently updated. However, there are enough subtle differences - missing sre bytecodes, unimplemented optimzations for unicode, direct use of the Java stack, and for complex REs, divergent performance - that we should revisit.

Also, this will be a good opportunity to stop expanding unicode into codepoint arrays.

History
Date	User	Action	Args
2015-10-07 23:04:06	zyasoft	create