path: root/tests/examplefiles/example.u

 // This is a one line comment. 
  /* an inner comment */ 
 
 /* nested /* comments */ */ 
 
  /* 
    /* 
       Multi-line. 
    */ 
  */ 

// Binary blob escape. 
//"some text \B(3)("\") ouhyeah" == "\"\\\"";
"some text \B(3)("\") ouhyeah" == "\"\\\"";
'some text \B(3)('\') ouhyeah' == '\'\\\'';

//"\B(4)()"'()";
"\B(4)()"'()";
'\B(4)()'"()';

//blob size limits
"hey ! \B(0)() oh !"

//blob format is wrong
"hey ! \B(2)(aaa) oh !"
"hey ! \B(100)(aaa) oh !"

//multiple blob in a string
"hey ! \B(3)(aaa) hey ! \B(3)(aaa) oh !"

// multiple digits blob size 
"hey ! \B(10)(aaaaaaaaaa)  !"
"hey ! \B(10)(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)  !"
"hey ! \B(100)(a)  !"

// multiple digits blob size 
"hey ! \B(007)(aaaaaaa)  !"
"hey ! \B(007)(aa)  !"
"hey ! \B(007)(aaaaaaaaaaaaaaaaaa)  !"

// deprecated and restricted keyworks 
emit Event.new;
static int main();

loopn (2) {echo("a");};

foreach (var i : [1,2,3,4]) {
	echo(i);
};

function() {};
 
var 'if'; 
var this.'else'; 
 
var '%x'; 
var '1 2 3'; 
var this.'[]';
       
// angles 
pi == 180deg; 
pi == 200grad;
       
// Dictionary
[ => ]; // The empty dictionary 

// duration 
1d   == 24h; 
0.5d == 12h; 
1h   == 60min; 
1min == 60s; 
1s   == 1000ms; 
 
1s == 1; 
1s 2s 3s == 6; 
1s 1ms == 1.001; 
1ms 1s == 1.001;
       
 
            1 == 1; 
            1 == 1.0; 
          1.2 == 1.2000; 
      1.234e6 == 1234000; 
        1e+11 == 1E+11; 
         1e10 == 10000000000; 
         1e30 == 1e10 * 1e10 * 1e10;
       
 
0.000001; 
 
0.0000001; 
 
0.00000000001; 
 
1e+3; 
 
1E-5; 
       

1.; 
// [00004701:error] !!! syntax error: unexpected ;
       
      0x2a == 42; 
      0x2A == 42; 
  0xabcdef == 11259375; 
  0xABCDEF == 11259375; 
0xFFFFFFFF == 4294967295;
       
 
//123foo; 
//[00005658:error] !!! syntax error: invalid token: '123foo' 
//12.3foo; 
//[00018827:error] !!! syntax error: invalid token: '12.3foo' 
0xabcdef; 
//[00060432] 11259375 
//0xabcdefg; 
//[00061848:error] !!! syntax error: invalid token: '0xabcdefg'
       
 
[]; // The empty list 
[1, 2, 3]; 
 
// Special characters. 
"\"" == "\""; 
"\\" == "\\"; 
 
// ASCII characters. 
"\a" == "\007"; "\a" == "\x07"; 
"\b" == "\010"; "\b" == "\x08"; 
"\f" == "\014"; "\f" == "\x0c"; 
"\n" == "\012"; "\n" == "\x0a"; 
"\r" == "\015"; "\r" == "\x0d"; 
"\t" == "\011"; "\t" == "\x09"; 
"\v" == "\013"; "\v" == "\x0b"; 
 
// Octal escapes. 
"\0" == "\00"; "\0" == "\000"; 
"\0000" == "\0""0"; 
"\062\063" == "23"; 
 
// Hexadecimal escapes. 
"\x00" == "\0"; 
"\x32\x33" == "23"; 
 
       
 
"foo" "bar" "baz" == "foobarbaz";
       
// Tuples 
(); 
[00000000] () 
(1,); 
[00000000] (1,) 
(1, 2); 
[00000000] (1, 2) 
(1, 2, 3, 4,); 
[00000000] (1, 2, 3, 4)
       
function Global.verboseId(var x) 
{ 
  echo(x) | x 
}|; 
class verboseId(Global).math : verboseId(Math) 
{ 
}; 
       
{ 
  for (3) 
  { 
    sleep(1s); 
    echo("ping"); 
  }, 
  sleep(0.5s); 
  for (3) 
  { 
    sleep(1s); 
    echo("pong"); 
  }, 
}; 
 
       1 + 1 ==    2; 
       1 - 2 ==   -1; 
       2 * 3 ==    6; 
      10 / 2 ==    5; 
     2 ** 10 == 1024; 
    -(1 + 2) ==   -3; 
   1 + 2 * 3 ==    7; 
 (1 + 2) * 3 ==    9; 
     -2 ** 2 ==   -4; 
   - - - - 1 ==    1;

a = b
a += b
a -= b
a *= b
a /= b
a %= b
a ^= b

 
var value = 0|; 
var valueAlias = value|; 
value += 10; 
valueAlias; 
var myList = []|; 
var myList.specialFeature = 42|; 
myList += [1, 2, 3]; 
myList.specialFeature; 
var myOtherList = myList + [4, 5]; 
myOtherList.specialFeature; 
var something = []|; 
var somethingElse = something|; 
something += [1, 2]; 
somethingElse += [3, 4]; 
something; 
       
 
class Counter 
{ 
  var count = 0; 
  function init (n)   { var this.count = n }; 
  // Display the value, and the identity. 
  function asString() { "%s @ %s" % [count, uid ] }; 
  function '+'(var n) { new(count + n) }; 
  function '-'(var n) { new(count - n) }; 
}|;
       
 
class ImmutableCounter : Counter 
{ 
  function '+='(var n) { this + n }; 
  function '-='(var n) { this - n }; 
}|; 
 
var ic1 = ImmutableCounter.new(0); 
var ic2 = ic1; 
 
ic1 += 1; 
ic1; 
ic2; 
       

a << b
a >> b
a ^ b
 
4 << 2 == 16; 
4 >> 2 ==  1;
       
!a
a && b
a || b
 
true && true; 
true || false; 
!true == false; 
true || (1 / 0); 
(false && (1 / 0)) == false;
       
a == b
a != b
a === b
a !== b
a ~= b
a =~= b
a < b
a <= b
a > b
a >= b
 
assert{ 
 ! (0 < 0); 
    0 <= 0; 
    0 == 0; 
   0 !== 0; 
}; 

a in b
a not in b
a[args]
a[args] = v
 
1     in [0, 1, 2]; 
3 not in [0, 1, 2]; 
 
"one"   in     ["zero" => 0, "one" => 1, "two" => 2]; 
"three" not in ["zero" => 0, "one" => 1, "two" => 2];
       
a.b
a.b(args)
a->b
a->b = v
a.&b
 
var obj = Object.new|; 
function obj.f() { 24 }|; 
 
 
var f = function(a, b) { 
  echo(b + a); 
}| 
f(1, 0); 
       

function g3() 
{ 
  return; // Stop execution at this point and return void 
  echo(0); // This is not executed 
}| 
       
Object.setProperty, to define/set a property.
Object.getProperty, to get a property.
Object.removeProperty, to delete a property.
Object.hasProperty, to test for the existence of a property.
Object.properties, to get all the properties of a slot.

enum Suit 
{ 
  hearts, 
  diamonds, 
  clubs, 
  spades, // Last comma is optional 
}; 
  
for (var suit in Suit) 
  echo("%s the ace of %s." % [find_ace(suit), suit]); 
       
switch ( ("foo", [1, 2]) ) 
{ 
  // The pattern does not match the values of the list. 
  case ("foo", [2, 1]): 
    echo("fail"); 
 
  // The pattern does not match the tuple. 
  case ["foo", [1, 2]]: 
    echo("fail"); 
 
  // The pattern matches and binds the variable "l" 
  // but the condition is not verified. 
  case ("foo", var l) if l.size == 0: 
    echo("fail"); 
 
  // The pattern matches. 
  case ("foo", [var a, var b]): 
    echo("foo(%s, %s)" % [a, b]); 
}; 
//[00000000] *** foo(1, 2)
       
{ 
  ["b" => var b, "a" => var a] = ["a" => 1, "b" => 2, "c" => 3]; 
  echo("a = %d, b = %d" % [a, b]); 
}; 
//[00000000] *** a = 1, b = 2
       
 
switch (["speed" => 2, "time" => 6s]) 
{ 
  case ["speed" => var s] if s > 3: 
    echo("Too fast"); 
  case ["speed" => var s, "time" => var t] if s * t > 10: 
    echo("Too far"); 
}; 
//[00000000] *** Too far
       
 
try 
{ 
  throw ("message", 0) 
} 
catch (var e if e.isA(Exception)) 
{ 
  echo(e.message) 
} 
catch ((var msg, var value) if value.isA(Float)) 
{ 
  echo("%s: %d" % [msg, value]) 
}; 
//[00000000] *** message: 0
       
 
{ 
  var e = Event.new; 
  at (e?(var msg, var value) if value % 2 == 0) 
    echo("%s: %d" % [msg, value]); 
 
  // Does not trigger the "at" because the guard is not verified. 
  e!("message", 1); 
 
  // Trigger the "at". 
  e!("message", 2); 
}; 
//[00000000] *** message: 2
       
for (var i = 0; i < 8; i++) 
{ 
  if (i % 2 != 0) 
    continue; 
  echo(i); 
}; 

do (1024) 
{ 
  assert(this == 1024); 
  assert(sqrt == 32); 
  setSlot("y", 23); 
}.y; 
 
{ 
  var n = 10|; 
  var res = []|; 
  loop;{ 
    n--; 
    res << n; 
    if (n == 0) 
      break 
  }; 
  res 
} 
       
 
{ 
  var n = 10|; 
  var res = []|; 
  loop|{ 
    n--; 
    res << n; 
    if (n == 0) 
      break 
  }; 
  res 
} 

 
var j = 3| 
while (0 < j) 
{ 
  echo(j); 
  j--; 
}; 

 
{ 
  var i = 4| 
  while| (true) 
  { 
    i -= 1; 
    echo ("in: " + i); 
    if (i == 1) 
      break 
    else if (i == 2) 
      continue; 
    echo ("out: " + i); 
  }; 
}; 

 
 
function test(e) 
{ 
  try 
  { throw e;  } 
  catch (0) 
  { echo("zero") } 
  catch ([var x, var y]) 
  { echo(x + y) } 
} | {}; 
 
try   { echo("try") } 
catch { echo("catch")} 
else  { echo("else")}; 
 
       
try 
{ 
  echo("inside"); 
} 
finally 
{ 
  echo("finally"); 
}; 
//[00000001] *** inside 
//[00000002] *** finally
       
at (e?(var start) ~ 1s) 
  echo("in : %s" % (time - start).round) 
onleave 
  echo("out: %s" % (time - start).round); 
 
// This emission is too short to trigger the at. 
e!(time); 
 
// This one is long enough. 
// The body triggers 1s after the emission started. 
e!(time) ~ 2s; 
//[00001000] *** in : 1 
//[00002000] *** out: 2
       

timeout (2.1s) 
  every (1s) 
    echo("Are you still there?"); 
//[00000000] *** Are you still there? 
//[00001000] *** Are you still there? 
//[00002000] *** Are you still there?
       
  every| (1s) 
  { 
    echo("aba"); 
  }; 

for, (var i = 3; 0 < i; i -= 1) 
{ 
  echo (i); 
}; 
 
 
for& (var i: [0, 1, 2]) 
{ 
  echo (i * i); 
}; 
 
loop,{ 
}; 


waituntil (e?(1, var b)); 

whenever (e?("arg", var arg) if arg % 2) 
  echo("e (%s) on" % arg) 
else 
  echo("e off"); 


  while, (i) 
  { 
    var j = i -= 1; 
  }| 
 
 
var y = 0; 
{ 
  sleep(0.5s); 
  y = 100 smooth:3s, 
},