Begin making pretty errors with lyneate

Cargo.lock

@@ -263,6 +263,16 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "acbf1af155f9b9ef647e42cdc158db4b64a1b61f743629225fde6f3e0be2a7c7"
 
+[[package]]
+name = "colored"
+version = "2.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cbf2150cce219b664a8a70df7a1f933836724b503f8a413af9365b4dcc4d90b8"
+dependencies = [
+ "lazy_static",
+ "windows-sys 0.48.0",
+]
+
 [[package]]
 name = "core-foundation"
 version = "0.9.4"
@@ -363,6 +373,7 @@ version = "0.4.1"
 dependencies = [
  "cc",
  "clap",
+ "colored",
  "crossterm",
  "csv",
  "enum-iterator",
@@ -371,6 +382,7 @@ dependencies = [
  "humantime",
  "libc",
  "log",
+ "lyneate",
  "nu-ansi-term",
  "rand",
  "rayon",
@@ -830,6 +842,16 @@ version = "0.4.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b5e6163cb8c49088c2c36f57875e58ccd8c87c7427f7fbd50ea6710b2f3f2e8f"
 
+[[package]]
+name = "lyneate"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "db93f0347ea71252796f5c6a61f2b75ed8434635ab2ad84238837a89125fa5e3"
+dependencies = [
+ "colored",
+ "widestring",
+]
+
 [[package]]
 name = "malloc_buf"
 version = "0.0.6"
@@ -1833,6 +1855,12 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "widestring"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "653f141f39ec16bba3c5abe400a0c60da7468261cc2cbf36805022876bc721a8"
+
 [[package]]
 name = "winapi"
 version = "0.3.9"

Cargo.toml

@@ -36,6 +36,8 @@ crossterm = "0.27.0"
 nu-ansi-term = "0.49.0"
 humantime = "2.1.0"
 stanza = "0.5.1"
+colored = "2.1.0"
+lyneate = "0.2.1"
 
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
 env_logger = "0.10"

src/error/mod.rs

@@ -65,9 +65,9 @@ impl fmt::Display for Error {
         use Error::*;
 
         match self {
-            Syntax(error) => write!(f, "Syntax error: {error}"),
-            Validation(error) => write!(f, "Validation error: {error}"),
-            Runtime(error) => write!(f, "Runtime error: {error}"),
+            Syntax(error) => write!(f, "{error}"),
+            Validation(error) => write!(f, "{error}"),
+            Runtime(error) => write!(f, "{error}"),
             ParserCancelled => write!(f, "Parsing was cancelled because the parser took too long."),
             Language(_error) => write!(f, "Parser failed to load language grammar."),
         }

src/error/syntax_error.rs

@@ -1,5 +1,6 @@
 use std::fmt::{self, Display, Formatter};
 
+use lyneate::Report;
 use serde::{Deserialize, Serialize};
 use tree_sitter::{Node as SyntaxNode, Point};
 
@@ -62,6 +63,25 @@ impl From<RwLockError> for SyntaxError {
 
 impl Display for SyntaxError {
     fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
-        write!(f, "{self:?}")
+        if let SyntaxError::InvalidSource { source, position } = self {
+            let report = Report::new_char_spanned(
+                &source,
+                [(
+                    position.start_byte..position.end_byte,
+                    format!(
+                        "Syntax error at ({}, {}) to ({}, {}).",
+                        position.start_row,
+                        position.start_column,
+                        position.end_row,
+                        position.end_column
+                    ),
+                    (255, 100, 100),
+                )],
+            );
+
+            f.write_str(&report.display_str())
+        } else {
+            write!(f, "{self:?}")
+        }
     }
 }