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% Copyright (C) 1992, 1993, 1994, 1999 Aladdin Enterprises. All rights reserved.
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%
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% This software is provided AS-IS with no warranty, either express or
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% implied.
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%
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% This software is distributed under license and may not be copied,
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% modified or distributed except as expressly authorized under the terms
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% of the license contained in the file LICENSE in this distribution.
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%
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% For more information about licensing, please refer to
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% http://www.ghostscript.com/licensing/. For information on
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% commercial licensing, go to http://www.artifex.com/licensing/ or
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% contact Artifex Software, Inc., 101 Lucas Valley Road #110,
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% San Rafael, CA 94903, U.S.A., +1(415)492-9861.
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% $Id: traceop.ps,v 1.4 2002/02/21 21:49:28 giles Exp $
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% Trace individual operators or procedures.
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% <opref> is <opname> or <opname> <dict>
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% (dict defaults to dict where op is currently defined, if writable;
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% otherwise uses userdict)
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% <opref> traceop prints vmem usage before;
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% <opref> <numargs|preproc> prints arguments or runs proc before;
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% <opref> <numargs|preproc> <numresults|postproc>
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% also prints results or runs proc after.
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% If traceflush is true, flush the output after each printout.
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/traceflush true def
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currentpacking true setpacking
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.currentglobal true .setglobal
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% Define the default "before" action
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/tracebefore { vmstatus 3 traceprint pop pop pop } def
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% Define the default "after" action
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/traceafter { } def
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/traceprint {
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dup type /integertype eq {
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1 sub -1 0 { ( ) print index ==only } for
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} {
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exec
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} ifelse
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} bind def
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/traceend {
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traceflush { flush } if
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} bind def
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/traceop {
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userdict begin
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dup type dup /nametype eq exch /dicttype eq or { { tracebefore } } if
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1 index type dup /nametype eq exch /dicttype eq or { { traceafter } } if
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/.tpost exch def /.tpre exch def
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dup type /dicttype ne {
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dup where not { userdict 1 index {} put userdict } if
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} if
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dup dup wcheck not {
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(Warning: substituting userdict for non-writable dictionary.) =
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pop userdict
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} if
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/.tddict exch def /.tdict exch def /.tname exch cvlit def
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.currentglobal [
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.tname /=only cvx ( ) /print cvx
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/.tpre load /traceprint cvx /traceend cvx
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.tdict .tname get /.tdef 1 index cvlit def
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dup xcheck {
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dup type dup /arraytype eq exch /packedarraytype eq or {
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/exec cvx
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} if
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} if
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/.tpost load /traceprint cvx () /= cvx /traceend cvx
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.tdef gcheck /.tpre load gcheck and /.tpost load gcheck and .setglobal
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] cvx
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.tdef type /operatortype eq {
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.tname exch .makeoperator
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} if
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exch .setglobal
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.tddict exch .tname exch put
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end % userdict
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} bind def
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/tracebind /bind load def % in case someone wants to put it back
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/bind { } def % disable
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.setglobal
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setpacking
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