'\"
'\" Generated from file 'pt_util\&.man' by tcllib/doctools with format 'nroff'
'\" Copyright (c) 2009 Andreas Kupries <andreas_kupries@users\&.sourceforge\&.net>
'\"
.TH "pt::util" 3tcl 1\&.1 tcllib "Parser Tools"
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.\}
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\h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul'
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See the \\*(So manual entry for details on the standard options.
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Command-Line Name:	\\fB\\$1\\fR
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.BS
.SH NAME
pt::util \- General utilities
.SH SYNOPSIS
package require \fBTcl  8\&.5\fR
.sp
package require \fBpt::ast  ?1\&.1?\fR
.sp
\fB::pt::util\fR \fBerror2readable\fR \fIerror\fR \fItext\fR
.sp
\fB::pt::util\fR \fBerror2position\fR \fIerror\fR \fItext\fR
.sp
\fB::pt::util\fR \fBerror2text\fR \fIerror\fR
.sp
.BE
.SH DESCRIPTION
.PP
Are you lost ?
Do you have trouble understanding this document ?
In that case please read the overview provided by the
\fIIntroduction to Parser Tools\fR\&. This document is the
entrypoint to the whole system the current package is a part of\&.
.PP
This package provides general utility commands\&.
.PP
This is a supporting package in the Core Layer of Parser Tools\&.
.PP
IMAGE: arch_core_support
.PP
.SH API
.TP
\fB::pt::util\fR \fBerror2readable\fR \fIerror\fR \fItext\fR
This command takes the structured form of a syntax \fIerror\fR as
thrown by parser runtimes and the input \fItext\fR to the parser which
caused that error and returns a string describing the error in a
human-readable form\&.
.sp
The input \fItext\fR is required to convert the character
position of the error into a more readable line/column format, and to
provide excerpts of the input around the error position\&.
.TP
\fB::pt::util\fR \fBerror2position\fR \fIerror\fR \fItext\fR
This command takes the structured form of a syntax \fIerror\fR as
thrown by parser runtimes and the input \fItext\fR to the parser which
caused that error and returns a 2-element list containing the line
number and column index for the error's character position in the
input, in this order\&.
.TP
\fB::pt::util\fR \fBerror2text\fR \fIerror\fR
This command takes the structured form of a syntax \fIerror\fR as
thrown by parser runtimes and returns a list of strings, each
describing a possible expected input in a human-readable form\&.
.PP
.SH "BUGS, IDEAS, FEEDBACK"
This document, and the package it describes, will undoubtedly contain
bugs and other problems\&.
Please report such in the category \fIpt\fR of the
\fITcllib Trackers\fR [http://core\&.tcl\&.tk/tcllib/reportlist]\&.
Please also report any ideas for enhancements you may have for either
package and/or documentation\&.
.SH KEYWORDS
EBNF, LL(k), PEG, TDPL, context-free languages, expression, grammar, matching, parser, parsing expression, parsing expression grammar, push down automaton, recursive descent, state, top-down parsing languages, transducer
.SH CATEGORY
Parsing and Grammars
.SH COPYRIGHT
.nf
Copyright (c) 2009 Andreas Kupries <andreas_kupries@users\&.sourceforge\&.net>

.fi