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Tokens.md

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Language Tokens

List of the Language Tokens to easy the understanding of the language, and it's syntax.

Value Tokens

These are tokens that represents a value or an alias to any value.

  • UNSIGNED_NUMBER: A Whole number. An integer number without negative values. Ex. 0 or 45.

  • SIGNED_NUMBER: A negative integer. Ex: -5 or -40.

  • FLOAT_NUMBER: Any number positive or negative that has a decimal point. Ex: 6.7736 or -0.233.

  • TEXT: A text surrounded by double quotes (" ") that can contains any symbol inside. Ex: "Hello World"

    • As usual, escaped chars and escaped double quotes are accepted. Just use a backslash to escape anything, including the backslash itself.

  • IDENTIFIER: A name for variable or constants. It must start with a letter or underscore followed by any quantity of numbers, letters or underscores and not be a reserved keyword. Ex: a, fj99, _45g or ex_Ample.

Reserved keywords

These tokens are words that have a special meaning on the language.

  • BOOLEAN: true or false. They are also a boolean value, and so, they can be associated to an identifier.

  • TYPE: bool, byte, int, uint, float or string. Used to type variables or constants.

  • ANY: any is a special type that can only be used on variables. It can represent any value.

  • CONST: const keyword for constants declaration.

  • LET: let keyword for variables declaration.

  • DO: do. Used in do-while loops.

  • WHILE: while. Can be used in both while or do-while loops.

  • FOR: for. Used in for loops.

  • IF: if. For if statements.

  • ELSE: else. For else clauses.

  • SWITCH: switch. Used in switch statements.

  • CASE: case. the keyword for a case on the switch statement. Like in golang, the cases don't need a break;

  • DEFAULT: default. A special switch case that executes when none of the other cases match;

Event keywords

These are keywords used to handle the language events.

  • ON: on. Keyword to declare a response for an event.

  • SHARE: share. Keyword to dispatch an event.

  • FINISH: finish. Ends an event. Works like the return keyword on void methods in other languages.

  • MODULE: module. Defines a butterfly module.

  • MESSAGE: message. Declares a message for an event.

Symbols

Special symbols for the language, used for operations or segregate values.

  • DELIMITER: a semicolon (;). Used to end commands.

  • INCREMENT: ++ or --.

  • NOT: An exclamation mark (!). Used To negate logic sentences.

  • LOGIC: Logic operators for logical and (&&) and for logical or (||).

  • ARITHMETIC: Arithmetic operators for addition (+), subtraction (-), multiplication (*) and division (/).

  • COMPARATOR: Comparison operators, like equals (==), not equals (!=), greater than (>) lower than (<), grater or equals (>=) and lower or equals (<=).

  • ASSIGN: The assign token (=) assigns a value to a constant or variable.

  • EXP_ASSIGN: The expression assign token is used on reassignments, when any arithmetic token is placed before the assign token to apply the operation before assignment. Ex: value += 45 (as a shortcut to value = value + 45).

  • COMMA: The comma separator (,).

  • COLON: A Colon (:).

Groupers

These Tokens are used to contain conditions, values, commands, etc...

  • OP_CURLY: An opening curly bracket ({).

  • CL_CURLY: A closing curly bracket (}).

  • OP_PARENT: An opening parenthesis (().

  • CL_PARENT: A closing parenthesis ()).

  • OP_SQUARE: An opening square bracket ([).

  • CL_SQUARE: A closing square bracket (]).