feat: made the macro error message human readable

Author: WolverinDEV

Cargo.lock

@@ -10,6 +10,7 @@ license-file.workspace = true
 bench = false
 
 [dependencies]
+thiserror-no-std = "2.0.2"
 
 [dev-dependencies]
 criterion = { version = "0.5", features = ["html_reports"] }

bmatcher-core/Cargo.toml

@@ -1,6 +1,8 @@
 use alloc::vec::Vec;
 use core::num::ParseIntError;
 
+use thiserror_no_std::Error;
+
 use super::{
     Lexer,
     PositionedError,
@@ -13,22 +15,33 @@ use crate::{
     ReadWidth,
 };
 
-#[derive(Debug, PartialEq, Eq, Clone)]
+#[derive(Debug, Error, PartialEq, Eq, Clone)]
 pub enum ParseError {
+    #[error("unexpected token encountered")]
     UnexpectedToken,
-    UnexpectedEnd,
 
-    MaskByteLenMismatch,
+    #[error("unexpected end of input")]
+    UnexpectedEnd,
 
+    #[error("invalid binary value")]
     BinaryValueInvalid,
+
+    #[error("incomplete binary value; bits missing")]
     BinaryValueIncomplete,
 
+    #[error("group not properly closed (missing ')')")]
     GroupNotClosed,
+
+    #[error("block not properly closed (missing '}}')")]
     BlockNotClosed,
 
+    #[error("invalid range bound: {0}")]
     RangeBoundInvalid(ParseIntError),
+
+    #[error("range end must be greater than start")]
     RangeEndMustBeGraterThenStart,
 
+    #[error("sequence exceeds maximum allowed size")]
     SequenceTooLarge,
 }
 

bmatcher-core/src/compiler/parser.rs

@@ -163,7 +163,7 @@ pub fn pattern(item: TokenStream) -> Result<TokenStream> {
                 .token()
                 .subspan(error.position().start + 1..error.position().end + 1)
                 .unwrap_or(pattern_str.span());
-            return Err(Error::new(error_span, format!("{:?}", error.inner())));
+            return Err(Error::new(error_span, format!("{}", error.inner())));
         }
     };