consolidate inspect implementations

src/atrule/mod.rs

@@ -83,17 +83,7 @@ impl AtRule {
                     toks.next();
                 }
                 devour_whitespace(toks);
-                AtRule::Debug(
+                AtRule::Debug(pos, message.inspect())
-                    pos,
-                    match message {
-                        Value::List(v, _, brackets) if v.is_empty() => match brackets {
-                            Brackets::None => "()".to_string(),
-                            Brackets::Bracketed => "[]".to_string(),
-                        },
-                        Value::Function(f) => format!("get-function(\"{}\")", f.name()),
-                        v => v.to_string(),
-                    },
-                )
             }
             AtRuleKind::Mixin => {
                 let (name, mixin) = Mixin::decl_from_tokens(toks, scope, super_selector)?;

src/builtin/meta.rs

@@ -1,7 +1,7 @@
 use std::collections::HashMap;
 
 use super::{Builtin, GLOBAL_FUNCTIONS};
-use crate::common::{Brackets, QuoteKind};
+use crate::common::QuoteKind;
 use crate::scope::global_var_exists;
 use crate::unit::Unit;
 use crate::value::{SassFunction, Value};
@@ -80,14 +80,7 @@ pub(crate) fn register(f: &mut HashMap<String, Builtin>) {
         Builtin::new(|mut args, scope, super_selector| {
             max_args!(args, 1);
             Ok(Value::Ident(
-                match arg!(args, scope, super_selector, 0, "value") {
+                arg!(args, scope, super_selector, 0, "value").inspect(),
-                    Value::List(v, _, brackets) if v.is_empty() => match brackets {
-                        Brackets::None => "()".to_string(),
-                        Brackets::Bracketed => "[]".to_string(),
-                    },
-                    Value::Function(f) => format!("get-function(\"{}\")", f.name()),
-                    v => v.to_string(),
-                },
                 QuoteKind::None,
             ))
         }),

src/value/mod.rs

@@ -186,6 +186,17 @@ impl Value {
         }
     }
 
+    pub fn inspect(&self) -> String {
+        match self {
+            Value::List(v, _, brackets) if v.is_empty() => match brackets {
+                Brackets::None => "()".to_string(),
+                Brackets::Bracketed => "[]".to_string(),
+            },
+            Value::Function(f) => format!("get-function(\"{}\")", f.name()),
+            v => v.to_string(),
+        }
+    }
+
     pub fn equals(self, other: Value) -> SassResult<bool> {
         Ok(match self.eval()? {
             Self::Ident(s1, ..) => match other {