diff options
author | Vincent Ambo <mail@tazj.in> | 2022-02-07T16·29+0300 |
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committer | clbot <clbot@tvl.fyi> | 2022-02-07T16·58+0000 |
commit | 0d0b43ed8819e66a0888eb6d1d1f47b171ae62e0 (patch) | |
tree | 305c04d3fe26c92ed7037f0b0f41f38444ce83ea /users/tazjin/rlox/src/treewalk/parser.rs | |
parent | 8b8c98380e85b2057a3c35ce3d76879fab4266b0 (diff) |
fix(users/tazjin): rustfmt code with non-default settings r/3776
rustfmt only sometimes detects path-based nested config files (probably some kind of race?), so my users folder uses a separate formatting check for rustfmt to avoid flaky CI. Enough flakes around already ... Change-Id: Ifd862f9974f071b3a256643dd8e56c019116156a Reviewed-on: https://cl.tvl.fyi/c/depot/+/5242 Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
Diffstat (limited to 'users/tazjin/rlox/src/treewalk/parser.rs')
-rw-r--r-- | users/tazjin/rlox/src/treewalk/parser.rs | 122 |
1 files changed, 53 insertions, 69 deletions
diff --git a/users/tazjin/rlox/src/treewalk/parser.rs b/users/tazjin/rlox/src/treewalk/parser.rs index 003cc34b4665..5794b42d1577 100644 --- a/users/tazjin/rlox/src/treewalk/parser.rs +++ b/users/tazjin/rlox/src/treewalk/parser.rs @@ -124,56 +124,54 @@ pub enum Statement { // Parser -/* -program → declaration* EOF ; - -declaration → funDecl - | varDecl - | statement ; - -funDecl → "fun" function ; -function → IDENTIFIER "(" parameters? ")" block ; -parameters → IDENTIFIER ( "," IDENTIFIER )* ; - - -statement → exprStmt - | forStmt - | ifStmt - | printStmt - | returnStmt - | whileStmt - | block ; - -forStmt → "for" "(" ( varDecl | exprStmt | ";" ) - expression? ";" - expression? ")" statement ; - -returnStmt → "return" expression? ";" ; - -whileStmt → "while" "(" expression ")" statement ; - -exprStmt → expression ";" ; - -ifStmt → "if" "(" expression ")" statement - ( "else" statement )? ; - -printStmt → "print" expression ";" ; - -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 → NUMBER | STRING | "true" | "false" | "nil" - | "(" expression ")" ; -*/ +// program → declaration* EOF ; +// +// declaration → funDecl +// | varDecl +// | statement ; +// +// funDecl → "fun" function ; +// function → IDENTIFIER "(" parameters? ")" block ; +// parameters → IDENTIFIER ( "," IDENTIFIER )* ; +// +// +// statement → exprStmt +// | forStmt +// | ifStmt +// | printStmt +// | returnStmt +// | whileStmt +// | block ; +// +// forStmt → "for" "(" ( varDecl | exprStmt | ";" ) +// expression? ";" +// expression? ")" statement ; +// +// returnStmt → "return" expression? ";" ; +// +// whileStmt → "while" "(" expression ")" statement ; +// +// exprStmt → expression ";" ; +// +// ifStmt → "if" "(" expression ")" statement +// ( "else" statement )? ; +// +// printStmt → "print" expression ";" ; +// +// 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 → NUMBER | STRING | "true" | "false" | "nil" +// | "(" expression ")" ; struct Parser { tokens: Vec<Token>, @@ -213,9 +211,7 @@ impl Parser { if params.len() >= 255 { return Err(Error { line: self.peek().line, - kind: ErrorKind::InternalError( - "255 parameter limit exceeded.".into(), - ), + kind: ErrorKind::InternalError("255 parameter limit exceeded.".into()), }); } @@ -429,10 +425,7 @@ impl Parser { return Err(Error { line: equals.line, - kind: ErrorKind::InvalidAssignmentTarget(format!( - "{:?}", - equals - )), + kind: ErrorKind::InvalidAssignmentTarget(format!("{:?}", equals)), }); } @@ -495,9 +488,7 @@ impl Parser { } fn unary(&mut self) -> ExprResult { - if self.match_token(&TokenKind::Bang) - || self.match_token(&TokenKind::Minus) - { + if self.match_token(&TokenKind::Bang) || self.match_token(&TokenKind::Minus) { return Ok(Expr::Unary(Unary { operator: self.previous().clone(), right: Box::new(self.unary()?), @@ -557,10 +548,7 @@ impl Parser { TokenKind::LeftParen => { let expr = self.expression()?; - self.consume( - &TokenKind::RightParen, - ErrorKind::UnmatchedParens, - )?; + self.consume(&TokenKind::RightParen, ErrorKind::UnmatchedParens)?; return Ok(Expr::Grouping(Grouping(Box::new(expr)))); } @@ -632,11 +620,7 @@ impl Parser { &self.tokens[self.current - 1] } - fn consume( - &mut self, - kind: &TokenKind, - err: ErrorKind, - ) -> Result<Token, Error> { + fn consume(&mut self, kind: &TokenKind, err: ErrorKind) -> Result<Token, Error> { if self.check_token(kind) { return Ok(self.advance()); } |