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## -*- tcl -*-
# # ## ### ##### ######## ############# #####################
## Copyright (c) 2007 Andreas Kupries.
#
# This software is licensed as described in the file LICENSE, which
# you should have received as part of this distribution.
#
# This software consists of voluntary contributions made by many
# individuals. For exact contribution history, see the revision
# history and logs, available at http://fossil-scm.hwaci.com/fossil
# # ## ### ##### ######## ############# #####################
## Pass VIII. This pass goes over the set of revision based changesets
## and sorts them topologically. It assumes that there are no cycles
## which could impede it, any having been broken by the previous pass,
## and aborts if that condition doesn't hold.
# # ## ### ##### ######## ############# #####################
## Requirements
package require Tcl 8.4 ; # Required runtime.
package require snit ; # OO system.
package require struct::list ; # Higher order list operations.
package require vc::tools::log ; # User feedback.
package require vc::fossil::import::cvs::cyclebreaker ; # Breaking dependency cycles.
package require vc::fossil::import::cvs::state ; # State storage.
package require vc::fossil::import::cvs::project::rev ; # Project level changesets
# # ## ### ##### ######## ############# #####################
## Register the pass with the management
vc::fossil::import::cvs::pass define \
RevTopologicalSort \
{Topologically Sort Revision ChangeSets} \
::vc::fossil::import::cvs::pass::rtopsort
# # ## ### ##### ######## ############# #####################
##
snit::type ::vc::fossil::import::cvs::pass::rtopsort {
# # ## ### ##### ######## #############
## Public API
typemethod setup {} {
# Define the names and structure of the persistent state of
# this pass.
state use revision
state use symbol
state use changeset
state use csitem
state use cstype
state use cssuccessor
state extend csorder {
-- Commit order of the revision changesets based on their
-- dependencies
cid INTEGER NOT NULL REFERENCES changeset,
pos INTEGER NOT NULL,
UNIQUE (cid),
UNIQUE (pos)
}
return
}
typemethod load {} {
# Pass manager interface. Executed to load data computed by
# this pass into memory when this pass is skipped instead of
# executed.
state use changeset
project::rev loadcounter
return
}
typemethod run {} {
# Pass manager interface. Executed to perform the
# functionality of the pass.
set len [string length [project::rev num]]
set myatfmt %${len}s
incr len 12
set mycsfmt %${len}s
cyclebreaker savecmd [myproc SaveOrder]
state transaction {
cyclebreaker run tsort-rev [myproc Changesets]
}
return
}
typemethod discard {} {
# Pass manager interface. Executed for all passes after the
# run passes, to remove all data of this pass from the state,
# as being out of date.
state discard csorder
return
}
# # ## ### ##### ######## #############
## Internal methods
proc Changesets {} {
log write 2 breakscycle {Selecting the revision changesets}
return [project::rev rev]
}
proc SaveOrder {graph at cset} {
::variable myatfmt
::variable mycsfmt
set cid [$cset id]
log write 4 rtopsort "Changeset @ [format $myatfmt $at]: [format $mycsfmt [$cset str]] '[$cset lod]' <<[FormatTR $graph $cset]>>"
state run {
INSERT INTO csorder (cid, pos)
VALUES ($cid, $at)
}
return
}
proc FormatTR {graph cset} {
return [join [struct::list map [$graph node set $cset timerange] {clock format}] { -- }]
}
typevariable myatfmt ; # Format for log output to gain better alignment of the various columns.
typevariable mycsfmt ; # Ditto for the changesets.
# # ## ### ##### ######## #############
## Configuration
pragma -hasinstances no ; # singleton
pragma -hastypeinfo no ; # no introspection
pragma -hastypedestroy no ; # immortal
# # ## ### ##### ######## #############
}
namespace eval ::vc::fossil::import::cvs::pass {
namespace export rtopsort
namespace eval rtopsort {
namespace import ::vc::fossil::import::cvs::cyclebreaker
namespace import ::vc::fossil::import::cvs::state
namespace eval project {
namespace import ::vc::fossil::import::cvs::project::rev
}
namespace import ::vc::tools::log
log register rtopsort
}
}
# # ## ### ##### ######## ############# #####################
## Ready
package provide vc::fossil::import::cvs::pass::rtopsort 1.0
return
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