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# Before `make install' is performed this script should be runnable with
# `make test'. After `make install' it should work as `perl test.pl'
######################### We start with some black magic to print on failure.
# Change 1..1 below to 1..last_test_to_print .
# (It may become useful if the test is moved to ./t subdirectory.)
BEGIN { $| = 1; print "1..19\n"; }
END {print "not ok 1\n" unless $loaded;}
use Parse::RecDescent;
$loaded = 1;
print "ok 1\n";
sub debug { $D || $D || 0 }
my $count = 2;
sub ok($;$)
{
my $ok = ((@_==2) ? ($_[0] eq $_[1]) : $_[0]);
print "\texp=[$_[1]]\n\tres=[$_[0]]\n" if debug && @_==2;
print "not " unless $ok;
print "ok $count\n";
$count++;
return $ok;
}
######################### End of black magic.
do { $RD_TRACE = 1; $RD_HINT = 1; } if debug > 1;
$data1 = '(the 1st teeeeeest are easy easy easyeasy';
$expect1 = '[1st|teeeeeest|are|easy:easy:easy:easy]';
$data2 = '(the 2nd test is';
$expect2 = '[2nd|test|is|]';
$data3 = 'the cat';
$expect3a = 'fluffy';
$expect3b = 'not fluffy';
$data4 = 'a dog';
$expect4 = 'rover';
$data5 = 'type a is int; type b is a; var x holds b; type c is d;';
$expect5 = 'typedef=>a, typedef=>b, defn=>x, baddef, baddef';
##################################################################
$parser_A = new Parse::RecDescent q
{
test1: "(" 'the' "$::first" /te+st/ is ('easy')(s?)
{ "[$item[3]|$item[4]|$item[5]|" .
join(':', @{$item[6]}) .
']' }
is: 'is' | 'are'
#================================================================#
test2: <matchrule:$arg{article}>
<matchrule:$arg[3]>[$arg{sound}]
the: 'the'
a: 'a'
cat: <reject: $arg[0] ne 'meows'> 'cat'
{ "fluffy" }
| { "not fluffy" }
dog: 'dog'
{ "rover" }
#================================================================#
test3: (defn | typedef | fail)(5..10)
{ join ', ', @{$item[1]}; }
typedef: 'type' id 'is' typename ';'
{ $return = "$item[0]=>$item[2]";
$thisparser->Extend("typename: '$item[2]'"); }
fail: { 'baddef' }
defn: 'var' id 'holds' typename ';'
{ "$item[0]=>$item[2]" }
id: /[a-z] # LEADING ALPHABETIC
\w* # FOLLOWED BY ALPHAS, DIGITS, OR UNDERSCORES
/ix # CASE INSENSITIVE
typename: 'int'
#================================================================#
test4: 'a' b /c/
{ "$itempos[1]{offset}{from}:$itempos[2]{offset}{from}:$itempos[3]{offset}{from}" }
b: "b"
#================================================================#
test5: ...!name notname | name
notname: /[a-z]\w*/i { 'notname' }
name: 'fred' { 'name' }
#================================================================#
test6: <rulevar: $test6 = 1>
test6: 'a' <commit> 'b' <uncommit> 'c' <reject: $test6 && $text>
{ 'prod 1' }
| 'a'
{ 'prod 2' }
| <uncommit>
{ 'prod 3' }
#================================================================#
test7: 'x' <resync> /y+/
{ $return = $item[3] }
};
ok ($parser_A) or exit;
##################################################################
$first = "1st";
$res = $parser_A->test1($data1);
ok($res,$expect1);
##################################################################
$first = "2nd";
$res = $parser_A->test1($data2);
ok($res,$expect2);
##################################################################
$res = $parser_A->test2($data3,undef,
article=>'the', animal=>'cat', sound=>'meows');
ok($res,$expect3a);
##################################################################
$res = $parser_A->test2($data3,undef,
article=>'the', animal=>'cat', sound=>'purrs');
ok ($res,$expect3b);
##################################################################
$res = $parser_A->test2($data4,undef,
article=>'a', animal=>'dog', sound=>'barks');
ok($res,$expect4);
##################################################################
$res = $parser_A->test3($data5);
ok($res,$expect5);
##################################################################
$res = $parser_A->test4("a b c");
ok($res, "0:1:7");
##################################################################
$res = $parser_A->test5("fred");
ok($res, "name");
$res = $parser_A->test5("fled");
ok($res, "notname");
##################################################################
$res = $parser_A->test6("a b d");
ok($res, "prod 2");
$res = $parser_A->test6("a c d");
ok($res, "prod 3");
$res = $parser_A->test6("a b c");
ok($res, "prod 1");
$res = $parser_A->test6("a b c d");
ok($res, "prod 2");
##################################################################
$res = $parser_A->test7("x yyy \n y");
ok($res, "y");
##################################################################
package Derived;
@ISA = qw { Parse::RecDescent };
sub method($$) { reverse $_[1] }
package main;
$parser_B = new Derived q
{
test1: /[a-z]+/i
{ reverse $item[1] }
{ $thisparser->method($item[2]) }
};
ok ($parser_B) or exit;
##################################################################
$res = $parser_B->test1("literal string");
ok($res, "literal");
#################################################################
$res = $parser_A->Extend("extended : 'some extension'");
ok(@{"$parser_A->{namespace}::ISA"} == 1);
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