SBLOC

Stack-Based Language Of Course

Dynamically typed, because it's easier. (in future may be statically typed)

I making this language in preparation for the Bear language.

Example:

var this_will_not_do_anything_but_arguments_are_parsed;
print(11, this_will_not_do_anything_but_arguments_are_parsed);
if 21 == 12
{
    print(1);
    print(2);
}
else
{
    print(0);
}
print(90123);


var x;
x = 10;
while x > 0
{
    print(x);
    x = x - 1;
}
print(x);

Syntax:

• print statement: 'print' expression ';'
• variable declaration: 'var' name ';'
• if statement: 'if' expression statement [ 'else' statement ]
• while statement: 'while' expression statement
• block statement: '{' statement... '}'
• set expression: name '=' expression
• expression: expression postfix
• postfix: [ '(' expression... ')' ]...

Bytecode:

Name	Description
get N	pushes value of variable with id N
set N	pops a value and sets variable with id N
nop	...
add, sub, mul, div, and_, eql, or_, lt, gt, le, ge	Math push(pop() X pop())
num N	pushes number N onto the stack
debug	pops a value and prints it. (temp. will be removed after functions)
dup	push(top())
neg	push(!pop())
jpa N	set current instruction index to N
jmp N	if popped value is not 0 then set current instruction index to N

Code:

Pasta