feat: improve macro error messages

1 files changed, 37 insertions, 6 deletions

diff --git a/macros/src/macro_flag.rs b/macros/src/macro_flag.rs
index 97a8ff2..f0e3a70 100644
--- a/macros/src/macro_flag.rs
+++ b/macros/src/macro_flag.rs
@@ -1,22 +1,37 @@
+use std::hash::Hash;
+
+use proc_macro2::Span;
 use syn::parse::{Parse, ParseStream};
 use syn::{Ident, LitBool, Token};
 
-#[derive(Debug, PartialEq, Eq)]
+#[derive(Debug, Eq, Clone)]
 pub struct MacroFlag
 {
     pub flag: Ident,
     pub is_on: LitBool,
 }
 
-impl Parse for MacroFlag
+impl MacroFlag
 {
-    fn parse(input: ParseStream) -> syn::Result<Self>
+    pub fn new_off(flag: &str) -> Self
     {
-        let input_forked = input.fork();
+        Self {
+            flag: Ident::new(flag, Span::call_site()),
+            is_on: LitBool::new(false, Span::call_site()),
+        }
+    }
 
-        let flag: Ident = input_forked.parse()?;
+    pub fn is_on(&self) -> bool
+    {
+        self.is_on.value
+    }
+}
 
-        input.parse::<Ident>()?;
+impl Parse for MacroFlag
+{
+    fn parse(input: ParseStream) -> syn::Result<Self>
+    {
+        let flag = input.parse::<Ident>()?;
 
         input.parse::<Token![=]>()?;
 
@@ -26,6 +41,22 @@ impl Parse for MacroFlag
     }
 }
 
+impl PartialEq for MacroFlag
+{
+    fn eq(&self, other: &Self) -> bool
+    {
+        self.flag == other.flag
+    }
+}
+
+impl Hash for MacroFlag
+{
+    fn hash<H: std::hash::Hasher>(&self, state: &mut H)
+    {
+        self.flag.hash(state);
+    }
+}
+
 #[cfg(test)]
 mod tests
 {