ChagaLite Programming Language

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About

• ChagaLite is a subset of the Chaga programming language.
• ChagaLite is an interpreted language.

Language specifications

Backus-Naur Form (BNF) for the ChagaLite programming language

• I will be posting the BNF for this language at a future date. It will be a subset of the BNF grammar for the Chaga Programming Language

ChagaLite programming language datatypes

• bool: This datatype stores a TRUE or FALSE Boolean value. The bool datatype can be utilized in an array.
• char: This datatype stores one unsigned byte.
• int: This datatype stores arbitrarily large or small integer values.

ChagaLite programming language metadata datatype attribute

• Every datatype in the ChagaLite programming language contains the metadata attribute, .self
• .self: this attribute refers to a variable's own metadata values.

The .self attribute has the following additional values:

• .datatype: this attribute defines the datatype of variables. Possible values are: {bool, char, string, int, float, file, ptr}.
• .length: the length attribute defines the maximum storage length (in bytes) of the datatype. The unary plus, unary minus, and decimal point ARE included in the length calculation for float. The unary plus and unary minus ARE included in the length calculation for integer.

Functions and Procedures

• Functions and procedures enable one to modularly break a program into parts.
• Functions return a datatype value to the calling program.
• Procedures do not return a value to the calling program.

A minimum Chaga program

• At a minimum, a ChagaLite program must contain a procedure named "main" defined as procedure main (void) {} Optional program statements may be included inside the statement block denoted within the curly braces.
• The main procedure may not contain input parameters. It must be be defined with a void parameter.

Example programs

• Compute fibonacci sequence
• Convert hexadecimal to integer
• Determine palindrome
• Fizz buzz
• Parameter passing string variables
• Sum of first n squares

BNF derivations

• BNF derivation: Convert hexadecimal to integer
• BNF derivation: Determine palindrome
• BNF derivation: Parameter passing string variables
• BNF derivation: Sum of first n squares

Tentative features to add

Statements

• Add support for variable increment statement (postfix), example: i++
• Add support for variable increment statement (prefix), example: ++i
• Add support for variable decrement statement (postfix), example: i--
• Add support for variable decrement statement (prefix), example: --i
• Add support for variable increment statement, example: i += 1
• Add support for variable decrement statement, example: i -= 1