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# -*- tcl -*-
# -- $Id: reader_ser.tcl,v 1.1 2005/09/28 04:51:22 andreas_kupries Exp $ ---
#
# PAGE plugin - reader - SER ~ Serialized PEG Container
#
# ### ### ### ######### ######### #########
## Imported API
# -----------------+--
# page_read | Access to the input stream.
# page_read_done |
# page_eof |
# -----------------+--
# page_info | Reporting to the user.
# page_warning |
# page_error |
# -----------------+--
# page_log_error | Reporting of internals.
# page_log_warning |
# page_log_info |
# -----------------+--
# ### ### ### ######### ######### #########
## Exported API
# -----------------+--
# page_rfeature | Query for special plugin features page might wish to use.
# page_rtime | Activate collection of timing statistics.
# page_rgettime | Return the collected timing statistics.
# page_rlabel | User readable label for the plugin.
# page_rhelp | Doctools help text for plugin.
# page_roptions | Options understood by plugin.
# page_rconfigure | Option (re)configuration.
# page_rdata | External access to processed input stream.
# page_rrun | Process input stream per plugin configuration and hardwiring.
# -----------------+--
# ### ### ### ######### ######### #########
## Requisites
package require struct::tree ; # Data structure.
package require page::parse::pegser
global usec
global timed
set timed 0
# ### ### ### ######### ######### #########
## Implementation of exported API
proc page_rlabel {} {
return {Serialized PEG Container}
}
proc page_rfeature {key} {
return [string eq $key timeable]
}
proc page_rtime {} {
global timed
set timed 1
return
}
proc page_rgettime {} {
global usec
return $usec
}
proc page_rhelp {} {
return {}
}
proc page_roptions {} {
return {}
}
proc page_rconfigure {option value} {
return -code error "Cannot set value of unknown option \"$option\""
}
## proc page_rdata {} {}
## Created in 'Initialize'
proc page_rrun {} {
global timed usec
page_log_info "reader/ser/run/parse"
struct::tree ::tree
if {$timed} {
set usec [lindex [time {
page::parse::pegser [page_read] ::tree
}] 0] ; #{}
} else {
page::parse::pegser [page_read] ::tree
}
page_read_done
set ast [::tree serialize]
::tree destroy
page_log_info "reader/ser/run/ok"
return $ast
}
# ### ### ### ######### ######### #########
## Internal helper code.
# ### ### ### ######### ######### #########
## Initialization
package provide page::reader::ser 0.2
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