From 51dcf19eb6f8d2127f3dedfc1d7d5326d7a8017b Mon Sep 17 00:00:00 2001
From: Greg Brown <gmb60@cam.ac.uk>
Date: Tue, 27 Apr 2021 13:07:27 +0100
Subject: Start rewrite using query system.

---
 src/chomp/ast/error.rs | 52 --------------------------------------------------
 1 file changed, 52 deletions(-)
 delete mode 100644 src/chomp/ast/error.rs

(limited to 'src/chomp/ast/error.rs')

diff --git a/src/chomp/ast/error.rs b/src/chomp/ast/error.rs
deleted file mode 100644
index 9057ec3..0000000
--- a/src/chomp/ast/error.rs
+++ /dev/null
@@ -1,52 +0,0 @@
-use super::{Expression, Lambda, NamedExpression};
-use proc_macro2::Span;
-use std::{
-    error::Error,
-    fmt::{self, Display},
-};
-
-#[derive(Debug)]
-pub enum TranslateError {
-    CallNotAFunction {
-        on: Expression,
-        span: Option<Span>,
-    },
-    WrongArgCount {
-        lambda: Lambda,
-        args: Vec<NamedExpression>,
-        span: Option<Span>,
-    },
-}
-
-impl From<TranslateError> for syn::Error {
-    fn from(e: TranslateError) -> Self {
-        let msg = e.to_string();
-        let span = match e {
-            TranslateError::CallNotAFunction { span, .. }
-            | TranslateError::WrongArgCount { span, .. } => span,
-        };
-
-        Self::new(span.unwrap_or_else(Span::call_site), msg)
-    }
-}
-
-impl Display for TranslateError {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        match self {
-            Self::CallNotAFunction { .. } => {
-                write!(f, "call expected a function")
-            }
-            Self::WrongArgCount { lambda, args, .. } => match (lambda.args.len(), args.len()) {
-                (1, n) => write!(f, "this function takes 1 argument but {} were supplied", n),
-                (m, _) => write!(f, "this function takes {} arguments but 1 was supplied", m),
-                (m, n) => write!(
-                    f,
-                    "this function takes {} arguments but {} were supplied",
-                    m, n
-                ),
-            },
-        }
-    }
-}
-
-impl Error for TranslateError {}
-- 
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