diff options
Diffstat (limited to 'users/tazjin/rlox/src/bytecode/compiler.rs')
-rw-r--r-- | users/tazjin/rlox/src/bytecode/compiler.rs | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/users/tazjin/rlox/src/bytecode/compiler.rs b/users/tazjin/rlox/src/bytecode/compiler.rs index 1ab42c705ab4..8eef40f0e669 100644 --- a/users/tazjin/rlox/src/bytecode/compiler.rs +++ b/users/tazjin/rlox/src/bytecode/compiler.rs @@ -120,6 +120,14 @@ fn rule_for<T: Iterator<Item = Token>>(token: &TokenKind) -> ParseRule<T> { ParseRule::new(Some(Compiler::unary), None, Precedence::None) } + TokenKind::BangEqual => { + ParseRule::new(None, Some(Compiler::binary), Precedence::Equality) + } + + TokenKind::EqualEqual => { + ParseRule::new(None, Some(Compiler::binary), Precedence::Equality) + } + _ => ParseRule::new(None, None, Precedence::None), } } @@ -194,6 +202,14 @@ impl<T: Iterator<Item = Token>> Compiler<T> { TokenKind::Plus => self.emit_op(OpCode::OpAdd), TokenKind::Star => self.emit_op(OpCode::OpMultiply), TokenKind::Slash => self.emit_op(OpCode::OpDivide), + + TokenKind::BangEqual => { + self.emit_op(OpCode::OpEqual); + self.emit_op(OpCode::OpNot); + } + + TokenKind::EqualEqual => self.emit_op(OpCode::OpEqual), + _ => unreachable!("only called for binary operator tokens"), } |