Yard/README.md

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Yard

Yard is an funny programming language compiler and interpreter written in pure Rust.
Its a functional language, having no concept of classes or inheritance. Types are static and must be known at compile time.
It contains features such as:

  1. a COMEFROM keyword (inverse goto)
  2. a don't code block which never executes
  3. no if. only unless, an inverted version of if. Meaning a block gets executed if the expression is false
  4. three spaces start a single line comment
  5. many ways of making comments: // comment, :REM: comment, # comment, -- comment -- cuz we can

Keywords

SyntaxDescriptionExample
UnlessInverted if. Only executes the following block if the expression is false
unless 3 > 4 {
    // code block
}
LoopWhile(true)-Loop. Loops forever until either yield, ret, break are used.
Loop take no boolean expression.
loop {
    // code block
}
contShort form for “continue”. Jumps to the next iteration of a loop 
breakExits a loop immediately 
yieldReturns from a function with an argument as return value
foo() = int {
    yield 4
}
retShort form for “return”. This keyword takes no argument and returns from a function. NOTE: if ret is used in a function with a return type, an error occurs. 

Example code

foo(bar: int, abc:int) = int {
    bar + abc
}

main {
    foo(4, 5)
}