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#!./perl
# Tests counting number of FETCHes.
#
# See Bugs #76814 and #87708.
BEGIN {
chdir 't' if -d 't';
@INC = '../lib';
require './test.pl';
plan (tests => 172);
}
use strict;
use warnings;
my $count = 0;
# Usage:
# tie $var, "main", $val; # FETCH returns $val
# tie $var, "main", $val1, $val2; # FETCH returns the values in order,
# # one at a time, repeating the last
# # when the list is exhausted.
sub TIESCALAR {my $pack = shift; bless [@_], $pack;}
sub FETCH {$count ++; @{$_ [0]} == 1 ? ${$_ [0]}[0] : shift @{$_ [0]}}
sub STORE {1;}
sub check_count {
my $op = shift;
my $expected = shift() // 1;
is $count, $expected,
"FETCH called " . (
$expected == 1 ? "just once" :
$expected == 2 ? "twice" :
"$count times"
) . " using '$op'";
$count = 0;
}
my ($dummy, @dummy);
tie my $var => 'main', 1;
# Assignment.
$dummy = $var ; check_count "=";
# Unary +/-
$dummy = +$var ; check_count "unary +";
$dummy = -$var ; check_count "unary -";
# Basic arithmetic and string operators.
$dummy = $var + 1 ; check_count '+';
$dummy = $var - 1 ; check_count '-';
$dummy = $var / 1 ; check_count '/';
$dummy = $var * 1 ; check_count '*';
$dummy = $var % 1 ; check_count '%';
$dummy = $var ** 1 ; check_count '**';
$dummy = $var << 1 ; check_count '<<';
$dummy = $var >> 1 ; check_count '>>';
$dummy = $var x 1 ; check_count 'x';
@dummy = ($var) x 1 ; check_count 'x';
$dummy = $var . 1 ; check_count '.';
# Pre/post in/decrement
$var ++ ; check_count 'post ++';
$var -- ; check_count 'post --';
++ $var ; check_count 'pre ++';
-- $var ; check_count 'pre --';
# Numeric comparison
$dummy = $var < 1 ; check_count '<';
$dummy = $var <= 1 ; check_count '<=';
$dummy = $var == 1 ; check_count '==';
$dummy = $var >= 1 ; check_count '>=';
$dummy = $var > 1 ; check_count '>';
$dummy = $var != 1 ; check_count '!=';
$dummy = $var <=> 1 ; check_count '<=>';
# String comparison
$dummy = $var lt 1 ; check_count 'lt';
$dummy = $var le 1 ; check_count 'le';
$dummy = $var eq 1 ; check_count 'eq';
$dummy = $var ge 1 ; check_count 'ge';
$dummy = $var gt 1 ; check_count 'gt';
$dummy = $var ne 1 ; check_count 'ne';
$dummy = $var cmp 1 ; check_count 'cmp';
# Bitwise operators
$dummy = $var & 1 ; check_count '&';
$dummy = $var ^ 1 ; check_count '^';
$dummy = $var | 1 ; check_count '|';
$dummy = ~$var ; check_count '~';
# Logical operators
$dummy = !$var ; check_count '!';
tie my $v_1, "main", 0;
$dummy = $v_1 || 1 ; check_count '||';
$dummy = ($v_1 or 1); check_count 'or';
$dummy = $var && 1 ; check_count '&&';
$dummy = ($var and 1); check_count 'and';
$dummy = ($var xor 1); check_count 'xor';
$dummy = $var ? 1 : 1 ; check_count '?:';
# Overloadable functions
$dummy = sin $var ; check_count 'sin';
$dummy = cos $var ; check_count 'cos';
$dummy = exp $var ; check_count 'exp';
$dummy = abs $var ; check_count 'abs';
$dummy = log $var ; check_count 'log';
$dummy = sqrt $var ; check_count 'sqrt';
$dummy = int $var ; check_count 'int';
$dummy = atan2 $var, 1 ; check_count 'atan2';
# Readline/glob
tie my $var0, "main", \*DATA;
$dummy = <$var0> ; check_count '<readline>';
$dummy = <${var}> ; check_count '<glob>';
# File operators
$dummy = -r $var ; check_count '-r';
$dummy = -w $var ; check_count '-w';
$dummy = -x $var ; check_count '-x';
$dummy = -o $var ; check_count '-o';
$dummy = -R $var ; check_count '-R';
$dummy = -W $var ; check_count '-W';
$dummy = -X $var ; check_count '-X';
$dummy = -O $var ; check_count '-O';
$dummy = -e $var ; check_count '-e';
$dummy = -z $var ; check_count '-z';
$dummy = -s $var ; check_count '-s';
$dummy = -f $var ; check_count '-f';
$dummy = -d $var ; check_count '-d';
$dummy = -l $var ; check_count '-l';
$dummy = -p $var ; check_count '-p';
$dummy = -S $var ; check_count '-S';
$dummy = -b $var ; check_count '-b';
$dummy = -c $var ; check_count '-c';
$dummy = -t $var ; check_count '-t';
$dummy = -u $var ; check_count '-u';
$dummy = -g $var ; check_count '-g';
$dummy = -k $var ; check_count '-k';
$dummy = -T $var ; check_count '-T';
$dummy = -B $var ; check_count '-B';
$dummy = -M $var ; check_count '-M';
$dummy = -A $var ; check_count '-A';
$dummy = -C $var ; check_count '-C';
# Matching
$_ = "foo";
$dummy = $var =~ m/ / ; check_count 'm//';
$dummy = $var =~ s/ //; check_count 's///';
$dummy = $var ~~ 1 ; check_count '~~';
$dummy = $var =~ y/ //; check_count 'y///';
/$var/ ; check_count 'm/pattern/';
/$var foo/ ; check_count 'm/$tied foo/';
s/$var// ; check_count 's/pattern//';
s/$var foo// ; check_count 's/$tied foo//';
s/./$var/ ; check_count 's//replacement/';
# Dereferencing
tie my $var1 => 'main', \1;
$dummy = $$var1 ; check_count '${}';
tie my $var2 => 'main', [];
$dummy = @$var2 ; check_count '@{}';
tie my $var3 => 'main', {};
$dummy = %$var3 ; check_count '%{}';
{
no strict 'refs';
tie my $var4 => 'main', **;
$dummy = *$var4 ; check_count '*{}';
}
tie my $var5 => 'main', sub {1};
$dummy = &$var5 ; check_count '&{}';
###############################################
# Tests for $foo binop $foo #
###############################################
# These test that binary ops call FETCH twice if the same scalar is used
# for both operands. They also test that both return values from
# FETCH are used.
sub bin_test {
my $op = shift;
tie my $var, "main", @_[0..$#_-1];
is(eval "\$var $op \$var", pop, "retval of \$var $op \$var");
check_count $op, 2;
}
sub bin_int_test {
my $op = shift;
tie my $var, "main", @_[0..$#_-1];
is(eval "use integer; \$var $op \$var", pop,
"retval of \$var $op \$var under use integer");
check_count "$op under use integer", 2;
}
our $TODO;
my $todo = 'bug #87708';
{
local $TODO = $todo;
bin_test '**', 2, 3, 8;
bin_test '*' , 2, 3, 6;
bin_test '/' , 10, 2, 5;
bin_test '%' , 11, 2, 1;
bin_test 'x' , 11, 2, 1111;
bin_test '-' , 11, 2, 9;
bin_test '<<', 11, 2, 44;
bin_test '>>', 44, 2, 11;
bin_test '<' , 1, 2, 1;
bin_test '>' , 44, 2, 1;
bin_test '<=', 44, 2, "";
bin_test '>=', 1, 2, "";
bin_test '!=', 1, 2, 1;
bin_test '<=>', 1, 2, -1;
bin_test 'le', 4, 2, "";
bin_test 'lt', 1, 2, 1;
bin_test 'gt', 4, 2, 1;
bin_test 'ge', 1, 2, "";
bin_test 'eq', 1, 2, "";
bin_test 'ne', 1, 2, 1;
bin_test 'cmp', 1, 2, -1;
bin_test '&' , 1, 2, 0;
bin_test '|' , 1, 2, 3;
}
bin_test '.' , 1, 2, 12;
bin_test '==', 1, 2, "";
bin_test '+' , 1, 2, 3;
bin_int_test '*' , 2, 3, 6;
bin_int_test '/' , 10, 2, 5;
bin_int_test '%' , 11, 2, 1;
bin_int_test '+' , 1, 2, 3;
bin_int_test '-' , 11, 2, 9;
bin_int_test '<' , 1, 2, 1;
bin_int_test '>' , 44, 2, 1;
bin_int_test '<=', 44, 2, "";
bin_int_test '>=', 1, 2, "";
bin_int_test '==', 1, 2, "";
bin_int_test '!=', 1, 2, 1;
bin_int_test '<=>', 1, 2, -1;
tie $var, "main", 1, 4;
cmp_ok(atan2($var, $var), '<', .3, 'retval of atan2 $var, $var');
check_count 'atan2', 2;
__DATA__
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