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basic: syntax update

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minjaesong
2020-12-12 00:17:50 +09:00
parent 91a4cb0049
commit 55c971fcf8
1 changed files with 20 additions and 21 deletions
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37
assets/tbas/syntax.txt
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@@ -2,30 +2,29 @@ line = linenumber , stmt , {":" , stmt} ;
linenumber = digits ; linenumber = digits ;
stmt = stmt =
if_stmt //TODO "IF" , if_conditional , "THEN" , stmt , ["ELSE" , stmt] ; //TODO
| "DEFUN" , [ident] , "(" , [ident , {" , " , ident}] , ")" , "=" , stmt | "DEFUN" , [ident] , "(" , [ident , {" , " , ident}] , ")" , "=" , expr //TODO
| "ON" , if_equation , ident , if_equation , {"," , if_equation} | "ON" , if_conditional , ident , if_conditional , {"," , if_conditional}
| "(" , stmt , ")" | "(" , stmt , ")"
| function_call ; | expr ;
if_stmt = "IF" , if_equation , "THEN" , stmt , ["ELSE" , stmt] ; //TODO expr = // ALL TODO
"(" , expr , ")"
function_call =
if_stmt //TODO
| equation ;
| ident , "(" , [stmt , {argsep , stmt} , [argsep]] , ")"
| ident , stmt , {argsep , stmt} , [argsep]
equation =
lit
| "(" , equation , ")"
| function_call , op , function_call | function_call , op , function_call
| op_uni , function_call ; | op_uni , function_call
| function_call ; //TODO
if_equation = if_equation , op - ("=") , if_equation function_call = // ALL TODO
| op_uni , if_equation "IF" , if_conditional , "THEN" , expr , ["ELSE" , expr] ; //TODO
| lit | lit
| "(" , if_equation , ")" ; | ident , "(" , [expr , {argsep , expr} , [argsep]] , ")"
| ident , expr , {argsep , expr} , [argsep] ;
if_conditional =
"(" , if_conditional , ")"
| function_call , op - "=" , function_call
| op_uni , function_call
| function_call ; //TODO
(* don't bother looking at these, because you already know the stuff *) (* don't bother looking at these, because you already know the stuff *)