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finished resolver (chapter 11) and started classes (chapter 12)

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Moritz Gmeiner 2023-01-28 01:11:55 +01:00
commit 10540708d4
34 changed files with 1449 additions and 439 deletions
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48
GRAMMAR Normal file
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program -> statement* EOF ;
statement -> if_stmt
| print_stmt
| while_stmt
| for_stmt
| declaration
| block
| expr_stmt
| break
| return_stmt ;
if_stmt -> "if" "(" expression ")" statement ( "else" statement )? ;
print_stmt -> "print" expression ";" ;
while_stmt -> "while" "(" expression ")" statement ;
for_stmt -> "for" "(" (declaration | expr_stmt | ";") ";" expression? ";" expression ";" ")" statement ;
block -> "{" statement* "}" ;
expr_Stmt -> expression ";" ;
break -> "break" ";" ;
return -> "return" expression? ";" ;
declaration -> var_decl | fun_decl | class_decl ;
var_decl -> "var" IDENTIFIER ( "=" expression )? ";"
fun_decl -> "fun" IDENTIFIER "(" parameters ")" block ;
class_decl -> "class" IDENTIFIER "{" method* "}" ;
method -> IDENTIFIER "(" parameters ")" block ;
expression -> assignment
assignment -> IDENTIFIER "=" assignment | logic_or ;
logic_or -> logic_and ( "or" logic_and )* ;
logic_and -> equality ( "and" equality )* ;
equality -> comparison ( ( "==" | "!=" ) comparison )* ;
comparison -> term ( ">" | ">=" | "<" | "<=" term )* ;
term -> factor ( ( "+" | "-" ) factor )*
factor -> unary ( ( "*" | "/" ) unary )* ;
unary -> ( "!" | "-" ) unary | call ;
call -> primary ( "(" arguments? ")" )* ;
arguments -> expression ( "," expression )* ;
primary -> "(" expression ")" | IDENTIFIER | lambda | NUMBER | STRING | "true" | "false" | "nil" ;
lambda -> "fun" "(" parameters ")" block ;
parameters -> ( IDENTIFIER ( "," IDENTIFIER )* )? ;