Include spans in var_refs of simplexpr

crates/eww/src/eww_state.rs

@@ -15,7 +15,7 @@ pub struct StateChangeHandler {
 
 impl StateChangeHandler {
     fn used_variables(&self) -> impl Iterator<Item = &VarName> {
-        self.unresolved_values.iter().flat_map(|(_, value)| value.var_refs())
+        self.unresolved_values.iter().flat_map(|(_, value)| value.var_refs()).map(|(_, value)| value)
     }
 
     /// Run the StateChangeHandler.

crates/eww/src/widgets/widget_node.rs

@@ -80,7 +80,7 @@ impl Generic {
 
     /// returns all the variables that are referenced in this widget
     pub fn referenced_vars(&self) -> impl Iterator<Item = &VarName> {
-        self.attrs.iter().flat_map(|(_, value)| value.var_refs())
+        self.attrs.iter().flat_map(|(_, value)| value.var_refs()).map(|(_, value)| value)
     }
 }
 

crates/simplexpr/src/eval.rs

@@ -5,7 +5,7 @@ use crate::{
     dynval::{ConversionError, DynVal},
 };
 use eww_shared_util::{Span, Spanned, VarName};
-use std::collections::{HashMap, HashSet};
+use std::collections::HashMap;
 
 #[derive(Debug, thiserror::Error)]
 pub enum EvalError {
@@ -102,12 +102,12 @@ impl SimplExpr {
         })
     }
 
-    pub fn var_refs(&self) -> HashSet<&VarName> {
+    pub fn var_refs(&self) -> Vec<(Span, &VarName)> {
         use SimplExpr::*;
         match self {
-            Literal(..) => HashSet::new(),
+            Literal(..) => Vec::new(),
+            VarRef(span, name) => vec![(*span, name)],
             Concat(_, elems) => elems.iter().flat_map(|x| x.var_refs().into_iter()).collect(),
-            VarRef(_, name) => maplit::hashset! { name },
             BinOp(_, box a, _, box b) | JsonAccess(_, box a, box b) => {
                 let mut refs = a.var_refs();
                 refs.extend(b.var_refs().iter());
@@ -141,7 +141,7 @@ impl SimplExpr {
             SimplExpr::Concat(span, elems) => {
                 let mut output = String::new();
                 for elem in elems {
-                    let result = elem.eval(values)?;
+                    let result = dbg!(elem.eval(values))?;
                     output.push_str(&result.0);
                 }
                 Ok(DynVal(output, *span))

crates/simplexpr/src/parser/lalrpop_helpers.rs

@@ -10,11 +10,22 @@ pub fn b<T>(x: T) -> Box<T> {
 
 pub fn parse_stringlit(
     span: Span,
-    segs: Vec<Sp<StrLitSegment>>,
+    mut segs: Vec<Sp<StrLitSegment>>,
 ) -> Result<SimplExpr, lalrpop_util::ParseError<usize, Token, LexicalError>> {
     let file_id = span.2;
     let parser = crate::simplexpr_parser::ExprParser::new();
 
+    if segs.len() == 1 {
+        let (lo, seg, hi) = segs.remove(0);
+        let span = Span(lo, hi, file_id);
+        match seg {
+            StrLitSegment::Literal(lit) => Ok(SimplExpr::Literal(DynVal(lit, span))),
+            StrLitSegment::Interp(toks) => {
+                let token_stream = toks.into_iter().map(|x| Ok(x));
+                parser.parse(file_id, token_stream)
+            }
+        }
+    } else {
         let elems = segs
             .into_iter()
             .filter_map(|(lo, segment, hi)| {
@@ -30,4 +41,5 @@ pub fn parse_stringlit(
             })
             .collect::<Result<Vec<SimplExpr>, _>>()?;
         Ok(SimplExpr::Concat(span, elems))
+    }
 }

crates/yuck/src/config/validate.rs

@@ -87,7 +87,11 @@ pub fn validate_variables_in_widget_use(
     let values = widget.attrs.attrs.values();
     let unknown_var = values.filter_map(|value| value.value.as_simplexpr().ok()).find_map(|expr: SimplExpr| {
         let span = expr.span();
-        expr.var_refs().iter().map(move |&x| (span, x.clone())).find(|(span, var_ref)| !variables.contains(var_ref))
+        expr.var_refs()
+            .iter()
+            .cloned()
+            .map(|(span, var_ref)| (span, var_ref.clone()))
+            .find(|(_, var_ref)| !variables.contains(var_ref))
     });
     if let Some((span, var)) = unknown_var {
         return Err(ValidationError::UnknownVariable { span, name: var.clone(), in_definition: is_in_definition });