todo.md

Todo List

Comments

• Single line comments
• Multi line comments

Variable Assignment

• Variable assignment
• Constant variable assignment

Arithmetic Operations

• Implement addition (+), subtraction(-), multiplication(*), division(/), power(^)
• Implement integer modulus(MOD) and division (DIV)

Relational Operations

• Equal to (=)
• Not equal to (!=)
• Greater than (>)
• Less than (<)
• Greater than or equal to (>=)
• Less than or equal to (<=)

Boolean Operations

• AND
• OR
• NOT

Iteration

Indefinite Iteration

• Repeat-until iteration
• While iteration

Definite Iteration

• For-to iteration
• For-in iteration

Selection

If Statements

• If selection
• If-else selection
• Nested selection
• If-else if-else selection

Arrays

• Array assignment
• Array access
• Multi dimensional arrays
• For-in iteration over arrays

Records

• Declaration of records
• Instantiation of records
• Record field access

Subroutines

• Subroutine definition
• Subroutine return values
• Calling subroutines

Built-in Functions

Arrays & Strings

• LEN() - Length of array or string
• POSITION() - Position of element in array or string
• SUBSTRING() - Extract substring from string
• SLICE() - Extract subarray from array

Conversion

• String to Int
• String to Real
• Int to String
• Real to String
• Char to Code
• Code to Char

Random Number Generation

• Generate random numbers within a range

Input & Output

• USERINPUT assignment to variables
• OUTPUT variable to standard output

Desirable Additions

• Implement operation precedence for expressions
• Add EXIT keyword for programatic use and also REPL mode
• Add multi nesting of records
• Add default values in record fields
• Have named scopes
• Printing of arrays and records

Later Releases

• Fix memory leaks
• Add better REPL mode
• More informative error messages