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GRAMMER.md

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Grammer

Types

  • $STR: string

    "hello", "hello123", "hello world", "123", "!@#$#%##$@123df"

    Can contain alphabets, numbers, spesial characters inside double quots ("").

  • $INT: integer

    123, 1000, 1343747

    Can contain only numbers.

  • $BOOL: boolean

    TRUE, FALSE

    Only those two options.

  • $FLOAT: float

    1.234, 0.122323, 3.1415, 1.0000

    Can contain only numbers with decimal point, can not start with 0.

  • $BIN: binary

    0b101010001, 0b1111111, 0b000101101, 0b000000

    Can contain only 0 and 1, starting with 0b.

  • $HEX: hexadecimal

    0x123, 0xAAA, 0x12AA, 0xABCDEF,

    Can contain only 0 - 0 and A - F starting with 0x.

  • $OCT: octal

    0o123, 0o1234, 0o4644612

    Can contain only 0 - 7 starting with 0o.

  • $CHAR: character

    'a', '1', '%'

    Can contain only one character of alphabets, numbers, spesial characters inside single quots ('').

syntax

  1. Each line must end with a space and a semi colon ( ; ).
  2. The start of the bolck thet is to be executed must start with START statement.
  3. Every script must end with a END statement.
  4. If the execution of a code have to be ended in between, the END statement.
  5. Variable name can only contain alphabet (a-z, A-Z), number (0-9) and a under score (_), can't start with a number.

operators

Arithmetic operators

operator meaning
+ addition
- subtraction
* multiplication
/ division
% modulus

Comparison operators

operator meaning
== equal to
!= not equal to
> greater than
< less than
>= greater than or equal to
<= less than or equal to

Logical operators

operator meaning
&& and
|| or
! not

bitwise operators

operator meaning
& bitwise and
| bitwise or
^ bitwise xor
~ bitwise not
<< left shift
>> right shift

Special/Miscellaneous Operators

operator meaning
= assignment
& address of
* dereference
. dot
-> arrow
, comma
sizeof size of data

Keywords

  1. SET - To assign value to a variable.

    # syntax:
SET <variable_name> $<type> = <value> ;

# example:
SET name $STRING = "Bob" ;
SET age $INT = 20 ;
SET is_boy $BOOL = TRUE ;
SET mark_percent $FLOAT = 75.89 ;
SET grade $CHAR = 'B' ;

  2. PRINT - To print a value to the terminal.

    # syntax:
PRINT <value-1>, <value-2>, <value-3>, <value-n>, ... ;

# example
PRINT "BOB" ;
PRINT 123 ;
PRINT "mark: ", 90.5 ;

  3. INPUT - To take input from the user.

    # syntax:
INPUT <variable_name> $<type> ;

# example:
INPUT name $STRING ;
INPUT age $INT ;
INPUT is_boy $BOOL ;
INPUT mark_percent $FLOAT ;
INPUT grade $CHAR ;

  4. GOTO - To jump to a label.

    # syntax:
<lable_name>: <statement> ;
...
GOTO <lable_name> ;

  5. IF-THEN-ELSE - To check a condition.

    # syntax:
# method 1
IF <condition> THEN <statement> ELSE <statement> ;
# method 2
IF <condition> THEN 
    <statement-1> ;
    <statement-2> ;
    ...
    <statement-n> ;
ELSE 
    <statement-1> ;
    <statement-2> ;
    ...
    <statement-n> ;
ENDIF ;

  6. FOR-NEXT - To iterate over a range.

     # syntax:
 # method 1: with out `STEP`
 FOR <control_variable> = <value> TO <end_value>
     <statement-1> ;
     <statement-2> ;
     ...
     <statement-n> ;
 NEXT <control_variable> ;
 
 # method 2: with `STEP`
 FOR <control_variable> = <value> TO <end_value> STEP <step_value>
     <statement-1> ;
     <statement-2> ;
     ...
     <statement-n> ;
 NEXT <control_variable> ;