bits-runner-builder/Grammar.md

? 0 or 1 instances

* 0 or more instance

+ 1 or more instances

<NL> New line

<IDENT> Identifier

Statement Function

<IDENT> fun (: <NL>? <IDENT> <TYPE> (, <NL?> <IDENT> <TYPE>)*)? (-> <NL>? <TYPE>)? <NL> ;

stuff fun
;

stuff fun -> sint32
    ret 42
;

stuff fun: num1 sint32,
num2 sint32 ->
sint32
    ret num1 + num2
;

Statement Assignment

<IDENT> <- <Expression> <NL>

num1 <- 5

StatementBlock

( )*

StatementExpression

StatementFunction: fun (: (, )*)? (-> )? ;

StatementLoop

loop [<StatementVariable> | <StatementAssignment>] (, <NL>? <Expression> (, <NL>? <Expression>)?)? <NL> <StatementBlock> ;

loop i sint32 <- 0, true, i < 10
    doStuff(i)
;

loop i sint32 <- 0,
true, i < 10
    doStuff(i)
;

loop i sint32 <- 0,
true,
i < 10
    doStuff(i)
;

loop (<ExpressionLogical> (, <NL>? <ExpressionLogical>)?)? <NL> <StatementBlock> ;

StatementMetaExternFunction: @extern fun (: (, )*)? (-> )?

StatementReturn

ret <Expression>

Statemnet Variable

<IDENT> <TYPE> <- <Expression>

ExpressionVariable:

<IDENT>

Expression If Else:

if <Expression> : <ExpressionBlock>

if num1 > 10: putchar('T')

if <Expression> : <NL> <ExpressionBlock> ;

if num1 > 10:
    num1 <- 500
    putchar('S')
;

if <Expression> : <ExpressionBlock> else <ExpressionBlock>

if num1 > 10: putchar('T') else putchar('N')

if <Expression> : <NL> <ExpressionBlock> else <NL> <ExpressionBlock> ;

if num1 > 10:
    putchar('T')
else
    putchar('N')
;

if <Expression> : <ExpressionBlock> else <NL> <ExpressionBlock> <NL> ;

if num1 > 10: putchar('T') else
    num1 <- 500
    putchar('F')
;

Expression Block

(<Statement> <NL>)* (<StatementExpression> <NL>?)? <TER>!