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Official ZPE/YASS documentationYASS keywords

The following is a list of the keywords in YASS, as well as their byte-code representation. Note, that certain byte codes are not used for individual keywords but for the representation in the the fAST that is generated and are represented by no keyword.

Byte code name Byte code Keyword
NAMED_ARGUMENT -10
MATHEMATICAL_EXPRESSION -9
LOGICAL_EXPRESSION -8
INFINITE PARAMETERS -7
ARGUMENTS -6
PARAMETERS -5
NULL -4 null
UNDEFINED -3 undefined
EXECUTION_FAILED -2
RESERVED -1
PROTECTED 0
PRIVATE 1 private
PUBLIC 2 public
NAME 3 _?([A-z][A-z0-9_]*)
VAR 4 $
INT 5 ((-?[1-9]+)|[0-9][0-9]*)(E[0-9]+)?
DOUBLE 6 ((-?[0-9]+((\\.)[0-9]+))(E(-?)[0-9]+)?)|(-?[0-9]+(E(-?)[0-9]+)?)
BOOL 7 true
false
STRING 8 (\".*\")|('.*')
OBJECT 9
LIST 10
ASSOCIATION 11
FUNCTION 12 function or fn
ASSIGN 16 =
END 17 end
LBRA 18 (
RBRA 19 )
COMMA 20 ,
IF 21 if
ELSE 22 else
ELSEIF 23 else if or elseif
WHEN 24 when
IS 25 is
SWITCH 26 switch
CASE 27 case
DEFAULT 28 default
OTHERWISE 29 otherwise
WHILE 30 while
UNTIL 31 until
FOR 32 for
EQUAL 33 ==
NEQUAL 34 !=
GT 35 >
LT 36 <
GTE 37 >=
LTE 38 <=
EXACTLY_EQUAL 39 ===
EXACTLY_NEQUAL 40 !==
LAND 41 && or and
LOR 42 || or or
POST_INCREMENT 43
PRE_INCREMENT 44
POST_DECREMENT 45
PRE_DECREMENT 46
INCREMENT 47 ++
DECREMENT 48 --
LOOP 49 loop
LSQBR 50 [
RSQBR 51 ]
DO 52 do
LBRACE 53 {
RBRACE 54 }
PLUS 55 +
MULT 56 *
MINUS 57 -
DIVIDE 58 /
MODULO 59 %
CIRCUMFLEX 60 ^
EACH 61 each
AS 62 as
IN 63 in
STRUCTURE 64 structure or struct or class
NEW 65 new or copyof
OBJECT_POINTER 66 ->
DOT 67 .
THEN 68 then
SEMI_COLON 69 ;
THIS 70 this
LAMBDA_CALL 71
AT 72 at
TERNARY_MARK 73 ?
COLON 74 :
TRY 75 try
CATCH 76 catch
CONCAT 77 &
HEXADECIMAL 78 (0|1)x[0-9A-F]+
OCTAL 79 (0|1)o[0-7]+
BINARY 80 (0|1)b[01]+
INCLUDES 81 includes
IMPORT 82 import
ALIASES 83 aliases
RETURN 84 return
BREAK 85 break
NEGATION 86 !
VAR_BY_REF 87 &$
INDEX_ACCESSOR 88
NEGATIVE 91 -
DEFINE 92 define
ASSERTS 93 asserts
INHERITS 94 inherits
COUNT 95 count
ALT_VALUE 96 ??
TO 97 to
OPEN_HEREDOC 98 <<
CLOSE_HEREDOC 99 >>
MATCH 100 match
MULTI_ASSIGN 101 *=
DIVIDE_ASSIGN 102 /=
POWER_ASSIGN 103 ^=
LET 104 let
BE 105 be
DECLARE 106 declare
RECORD 107 unused
CUSTOM_MODULE 116
MIXED_TYPE 117 mixed
STRING_TYPE 118 string
NUMBER_TYPE 119 number
BOOLEAN_TYPE 120 boolean
LIST_TYPE 121 list
FUNCTION_TYPE 123 function
OBJECT_TYPE 124 object
SPECIAL_KEYWORD 125 increase
by

The SPECIAL_KEYWORD keyword is a group of syntactic sugar based keywords to help keep the number of byte codes down by combining them into one. It then can perform string checks on the word as opposed to relying on a byte code alone.

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