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Overview
| Comment: | pt::peg::op `drop unrealizable` more conservative, ignore unreachable symbols as realizable. Tests pass. |
|---|---|
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: | 4bbe140a79eec2efefe85b398bbac7100dc486f504d71cbf1f75b529a9fe9265 |
| User & Date: | andreask 2018-07-09 21:27:50 |
References
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2018-07-09
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| 21:29 | • Closed ticket [351b8b2f55]: Bug fixes on PT/PEG transformation operations plus 6 other changes artifact: 73e3142bf8 user: aku | |
Context
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2018-07-19
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| 19:31 | Change the criterium for detecting if two circles touch - use the mean of the two radii check-in: 6124e077a8 user: arjenmarkus tags: trunk | |
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2018-07-16
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| 09:25 | Create new branch named "pt-peg_op-tests-ssoberni" check-in: 9b2222e1ad user: ssoberni tags: pt-peg_op-tests-ssoberni | |
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2018-07-09
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| 21:41 | ldap/ldapx <EF> Tkt [60160205fe] Extensions to the TLS handling of ldap(x) enabling the specification of all TLS options instead of the limited set we had before. check-in: 337c7e5654 user: andreask tags: ldap-60160205fe-tls | |
| 21:27 | pt::peg::op `drop unrealizable` more conservative, ignore unreachable symbols as realizable. Tests pass. check-in: 4bbe140a79 user: andreask tags: trunk | |
| 21:17 | Tkt [351b8b2f55]. Work branch integrated. check-in: 3720e40747 user: andreask tags: trunk | |
Changes
Changes to modules/pt/pt_peg_op.tcl.
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# -*- tcl -*-
# Copyright (c) 2009 Andreas Kupries <andreas_kupries@sourceforge.net>
# Utility commands operating on parsing expressions.
# # ## ### ##### ######## ############# #####################
## Requirements
package require Tcl 8.5 ; # Required runtime.
................................................................................
return 1
}
}
}
proc ::pt::peg::op::drop::unrealizable {container} {
set all [$container nonterminals]
lappend all {} ; # marker for start expression.
set unrealizable \
[struct::set difference \
$all [pt::peg::op realizable $container]]
if {![llength $unrealizable]} return
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# -*- tcl -*- # Copyright (c) 2009-2018 Andreas Kupries <andreas_kupries@sourceforge.net> # Utility commands operating on parsing expressions. # # ## ### ##### ######## ############# ##################### ## Requirements package require Tcl 8.5 ; # Required runtime. ................................................................................ return 1 } } } proc ::pt::peg::op::drop::unrealizable {container} { #set all [$container nonterminals] set all [::pt::peg::op reachable $container] lappend all {} ; # marker for start expression. set unrealizable \ [struct::set difference \ $all [pt::peg::op realizable $container]] if {![llength $unrealizable]} return |