An implementation of Lox from craftinginterpreters.com. With some challenges implemented.
program
59A1
→ declaration* EOF ;
declaration → varDeclaration | statement | funDecl | classDecl;
loopDeclaration → varDeclaration | loopStatement ;
varDeclaration → "var" IDENTIFIER ( "=" expression )? ";" ;
statement → exprStmt | printStmt | block | ifStmt | whileStmt | forStmt | returnStmt;
loopStatement → exprStmt | printStmt | loopBlock | loopIfStmt | whileStmt | forStmt | breakStmt | returnStmt;
printStmt → "print" expression ";" ;
classDecl → "class" IDENTIFIER ("<" IDENTIFIER)? "{" function* "}" ;
funDecl → "fun" function;
function → IDENTIFIER "(" parameters? ")" block
parameters → IDENTIFIER ( "," IDENTIFIER )* ;
breakStmt → "break" ";" ;
returnStmt → "return" expression? ";" ;
block → "{" declaration* "}" ;
functionBlock → "{" ( declaration* ) returnStmt? "}" ;
loopBlock → "{" ( loopDeclaration* ) breakStmt? "}" ;
exprStmt → expression ";" ;
ifStmt → "if" "(" expression ")" statement "else" statement ";" ;
loopIfStmt → "if" "(" expression ")" loopStatement "else" loopStatement ";" ;
whileStmt → "while" "(" expression ")" loopStatement ;
forStmt → "for" "(" ( varDeclaration | expression ";" ) expression? ";" expression? ")" loopStatement ;
expression → assignment ;
assignment → ( call ".")? IDENTIFIER "=" assignment | logic_or ;
logic_or → logic_and ( "or" logic_and )*;
logic_and → equality ( "and" equality )*;
equality → comparison ( ( "!=" | "==" ) comparison )* ;
comparison → addition ( ( ">" | ">=" | "<" | "<=" ) addition )* ;
addition → multiplication ( ( "-" | "+" ) multiplication )* ;
multiplication → unary ( ( "/" | "*" ) unary )* ;
unary → ( "!" | "-" ) unary | call ;
call → primary ( ( "(" arguments? ")" | "." IDENTIFIER ) )* ;
arguments → expression ( "," expression )* ;
primary → NUMBER | STRING | "false" | "true" | "nil" | "(" expression ")" | IDENTIFIER | "super" . IDENTIFER ;
- Try/Catch statement
-
assertbuilt in method - Runtime jar output
- Runtime docker image publish
- Lox native methods for writing simple unit tests
- Namespacing/Packaging
- Vscode plugin