From 3c163eabc78ddbd26bb250ef5ad6da28cd61adc6 Mon Sep 17 00:00:00 2001
From: Sophie Forrest <git@sophieforrest.com>
Date: Fri, 30 Aug 2024 23:35:45 +1200
Subject: feat: split engine into crates

---
 src/lexer.rs | 79 ------------------------------------------------------------
 1 file changed, 79 deletions(-)
 delete mode 100644 src/lexer.rs

(limited to 'src/lexer.rs')

diff --git a/src/lexer.rs b/src/lexer.rs
deleted file mode 100644
index 786c873..0000000
--- a/src/lexer.rs
+++ /dev/null
@@ -1,79 +0,0 @@
-//! Lexer for Brainfuck
-
-/// List of operator codes for the lexer
-/// Note: Any input symbol that is not in this list is a comment
-#[derive(Clone, Copy, Debug)]
-pub enum OperatorCode {
-	/// `>`
-	///
-	/// Increment the data pointer by one (to point to the next cell to the
-	/// right).
-	IncrementPointer,
-
-	/// `<`
-	///
-	/// Decrement the data pointer by one (to point to the next cell to the
-	/// left).
-	DecrementPointer,
-
-	/// `+`
-	///
-	/// Increment the byte at the data pointer by one.
-	IncrementByte,
-
-	/// `-`
-	///
-	/// Decrement the byte at the data pointer by one.
-	DecrementByte,
-
-	/// `.`
-	///
-	/// Output the byte at the data pointer.
-	OutputByte,
-
-	/// `,`
-	///
-	/// Accept one byte of input, storing its value in the byte at the data
-	/// pointer.
-	InputByte,
-
-	/// `[`
-	///
-	/// If the byte at the data pointer is zero, then instead of moving the
-	/// instruction pointer forward to the next command, jump it forward to the
-	/// command after the matching ] command.
-	StartLoop {
-		/// Offset of the bracket in the source.
-		offset: usize,
-	},
-
-	/// `]`
-	///
-	/// If the byte at the data pointer is nonzero, then instead of moving the
-	/// instruction pointer forward to the next command, jump it back to the
-	/// command after the matching [ command.
-	EndLoop {
-		/// Offset of the bracket in the source.
-		offset: usize,
-	},
-}
-
-/// Perform lexical analysis on the input brainfuck code
-#[must_use]
-pub fn lex(input: &str) -> Vec<OperatorCode> {
-	input
-		.char_indices()
-		.filter_map(|(i, symbol)| match symbol {
-			'>' => Some(OperatorCode::IncrementPointer),
-			'<' => Some(OperatorCode::DecrementPointer),
-			'+' => Some(OperatorCode::IncrementByte),
-			'-' => Some(OperatorCode::DecrementByte),
-			'.' => Some(OperatorCode::OutputByte),
-			',' => Some(OperatorCode::InputByte),
-			'[' => Some(OperatorCode::StartLoop { offset: i }),
-			']' => Some(OperatorCode::EndLoop { offset: i }),
-			// Any symbol that does not match one of the above is a comment
-			_ => None,
-		})
-		.collect()
-}
-- 
cgit 1.4.1