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#!/usr/bin/perl
use strict;
use warnings;
use Test::More tests => 100;
BEGIN {
use_ok('String::Tokenizer')
};
# first check that our inner class
# cannot be called from outside
eval {
String::Tokenizer::Iterator->new();
};
like($@, qr/Insufficient Access Priviledges/, '... this should have died');
# it can also parse reasonably well formated perl code
my $STRING = <<STRING_TO_TOKENIZE;
sub test {
my (\$arg) = \@_;
if (\$arg == 10){
return 1;
}
return 0;
}
STRING_TO_TOKENIZE
my @expected = qw(sub test { my ( $arg ) = @_ ; if ( $arg == 10 ) { return 1 ; } return 0 ; });
my $st = String::Tokenizer->new($STRING, '();{}');
isa_ok($st, "String::Tokenizer");
can_ok("String::Tokenizer::Iterator", 'new');
my $i = $st->iterator();
isa_ok($i, "String::Tokenizer::Iterator");
can_ok($i, 'reset');
can_ok($i, 'hasNextToken');
can_ok($i, 'hasPrevToken');
can_ok($i, 'nextToken');
can_ok($i, 'prevToken');
can_ok($i, 'currentToken');
can_ok($i, 'lookAheadToken');
can_ok($i, 'skipToken');
can_ok($i, 'skipTokens');
can_ok($i, 'skipTokensUntil');
can_ok($i, 'collectTokensUntil');
my @iterator_output;
push @iterator_output => $i->nextToken() while $i->hasNextToken();
ok(!defined($i->nextToken()), '... this is undefined');
ok(!defined($i->lookAheadToken()), '... this is undefined');
is_deeply(
\@iterator_output,
\@expected,
'... this is the output we would expect');
my @reverse_iterator_output;
push @reverse_iterator_output => $i->prevToken() while $i->hasPrevToken();
ok(!defined($i->prevToken()), '... this is undefined');
ok(!defined($i->lookAheadToken()), '... this is undefined');
is_deeply(
\@reverse_iterator_output,
[ reverse @expected ],
'... this is the output we would expect');
my $look_ahead;
while ($i->hasNextToken()) {
my $next = $i->nextToken();
my $current = $i->currentToken();
is($look_ahead, $next, '... our look ahead matches out next') if defined $look_ahead;
is($current, $next, '... our current matches out next');
$look_ahead = $i->lookAheadToken();
}
$i->reset();
my @expected5 = qw({ ( ) @_ if $arg 10 { 1 } 0 });
my @skip_output;
$i->skipTokens(2);
while ($i->hasNextToken()) {
push @skip_output => $i->nextToken();
$i->skipToken();
}
is_deeply(
\@skip_output,
\@expected5,
'... this is the output we would expect');
# test the skipTokensUntil and collectTokensUntil function with a double quoted string
{
my $st = String::Tokenizer->new('this "is a good way" to "test a double quoted" string' , '"');
isa_ok($st, "String::Tokenizer");
my $i = $st->iterator();
isa_ok($i, "String::Tokenizer::Iterator");
is($i->nextToken(), 'this', '... got the right start token');
ok($i->skipTokensUntil('"'), '... this will successfully skip');
is($i->nextToken(), 'is', '... got the right token next expected');
ok($i->skipTokensUntil('"'), '... this will successfully skip');
is($i->nextToken(), 'to', '... got the right token next expected');
is($i->nextToken(), '"', '... got the right token next expected');
is_deeply(
[ $i->collectTokensUntil('"') ],
[ qw/test a double quoted/ ],
'... got the collection we expected');
is($i->nextToken(), 'string', '... got the right token next expected');
}
{
my $st = String::Tokenizer->new('this "is a good way" to "test a double quoted" string' , '"');
isa_ok($st, "String::Tokenizer");
my $i = $st->iterator();
isa_ok($i, "String::Tokenizer::Iterator");
is($i->nextToken(), 'this', '... got the right start token');
ok(!$i->skipTokensUntil('?'), '... this will not successfully match and so not skip');
is_deeply(
[ $i->collectTokensUntil('"') ],
[ ],
'... got the collection (or lack thereof) we expected');
is_deeply(
[ $i->collectTokensUntil('"') ],
[ qw/is a good way/ ],
'... got the collection (or lack thereof) we expected');
is($i->nextToken(), 'to', '... got the right token next expected');
is_deeply(
[ $i->collectTokensUntil('not found') ],
[ ],
'... got the collection (or lack thereof) we expected');
is($i->nextToken(), '"', '... got the right token next expected');
}
{
my $st = String::Tokenizer->new(
'this is "a good way" to "test a double quoted " string' ,
'"',
String::Tokenizer->RETAIN_WHITESPACE
);
isa_ok($st, "String::Tokenizer");
my $i = $st->iterator();
isa_ok($i, "String::Tokenizer::Iterator");
is($i->nextToken(), 'this', '... got the right start token');
$i->skipTokenIfWhitespace();
is($i->lookAheadToken(), 'is', '... got the right start token');
$i->skipTokenIfWhitespace();
is($i->nextToken(), 'is', '... got the right start token');
$i->skipTokenIfWhitespace();
is($i->nextToken(), '"', '... got the right start token');
is_deeply(
[ $i->collectTokensUntil('"') ],
[ "a", " ", "good", " ", "way" ],
'... got the collection (or lack thereof) we expected');
is($i->lookAheadToken(), ' ', '... our next token is whitespace');
$i->skipTokenIfWhitespace();
is($i->nextToken(), 'to', '... got the right token next expected');
# this is enough for now, we dont need to test the rest of the string
}
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