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#!/usr/bin/perl
# $PostgreSQL: pgsql/src/interfaces/ecpg/preproc/check_rules.pl,v 1.1 2009/11/27 10:00:40 meskes Exp $
# test parser generater for ecpg
# call with backend parser as stdin
#
# Copyright (c) 2009, PostgreSQL Global Development Group
#
# Written by Michael Meskes <[email protected]>
#
# Placed under the same license as PostgreSQL.
#
if (@ARGV) {
$path = $ARGV[0];
$parser = $ARGV[1];
}
$[ = 1; # set array base to 1
if ($path eq '') { $path = "."; }
$filename = $path . "/ecpg.addons";
if ($parser eq '') { $parser = "../../../backend/parser/gram.y"; }
$replace_line{'ExecuteStmtEXECUTEnameexecute_param_clause'} = 'EXECUTE prepared_name execute_param_clause execute_rest';
$replace_line{'ExecuteStmtCREATEOptTempTABLEcreate_as_targetASEXECUTEnameexecute_param_clause'} = 'CREATE OptTemp TABLE create_as_target AS EXECUTE prepared_name execute_param_clause';
$replace_line{'PrepareStmtPREPAREnameprep_type_clauseASPreparableStmt'} = 'PREPARE prepared_name prep_type_clause AS PreparableStmt';
$block = '';
$ret = 0;
$yaccmod = 0;
$brace_indent = 0;
open GRAM, $parser or die $!;
while (<GRAM>) {
chomp; # strip record separator
if (/^%%/) {
$yaccmode++;
}
if ($yaccmode != 1) {
next;
}
$S = $_;
$prec = 0;
# Make sure any braces are split
$S =~ s/{/ { /g;
$S =~ s/}/ } /g;
# Any comments are split
$S =~ s#[/][*]# /* #g;
$S =~ s#[*][/]# */ #g;
# Now split the line into individual fields
$n = (@arr = split(' ', $S));
# Go through each field in turn
for ($fieldIndexer = 1; $fieldIndexer <= $n; $fieldIndexer++) {
if ($arr[$fieldIndexer] eq '*/' && $comment) {
$comment = 0;
next;
}
elsif ($comment) {
next;
}
elsif ($arr[$fieldIndexer] eq '/*') {
# start of a multiline comment
$comment = 1;
next;
}
elsif ($arr[$fieldIndexer] eq '//') {
next;
}
elsif ($arr[$fieldIndexer] eq '}') {
$brace_indent--;
next;
}
elsif ($arr[$fieldIndexer] eq '{') {
$brace_indent++;
next;
}
if ($brace_indent > 0) {
next;
}
if ($arr[$fieldIndexer] eq ';' || $arr[$fieldIndexer] eq '|') {
$block = $non_term_id . $block;
if ($replace_line{$block}) {
$block = &generate_block($replace_line{$block});
}
$found{$block} = 'found';
$block = '';
}
elsif (($arr[$fieldIndexer] =~ '[A-Za-z0-9]+:') || $arr[$fieldIndexer + 1] eq ':') {
$non_term_id = $arr[$fieldIndexer];
$non_term_id =~ s/://g;
}
else {
$block = $block . $arr[$fieldIndexer];
}
}
}
close GRAM;
open ECPG, $filename or die $!;
line: while (<ECPG>) {
chomp; # strip record separator
@Fld = split(' ', $_, -1);
if (!/^ECPG:/) {
next line;
}
if ($found{$Fld[2]} ne 'found') {
printf $Fld[2] . " is not used for building parser!\n";
$ret = 1;
}
}
close ECPG;
exit $ret;
sub generate_block {
local($line) = @_;
$block = $non_term_id . $line;
$block =~ s/ //g;
$s = "\\|", $block =~ s/$s//g;
return $block;
}
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