Add error for

src/abstract_tree/value_node.rs

@@ -205,7 +205,11 @@ impl AbstractTree for ValueNode {
     fn run(&self, source: &str, context: &Map) -> Result<Value> {
         let value = match self {
             ValueNode::Boolean(value_source) => Value::Boolean(value_source.parse().unwrap()),
-            ValueNode::Float(value_source) => Value::Float(value_source.parse().unwrap()),
+            ValueNode::Float(value_source) => {
+                let float = value_source.parse()?;
+
+                Value::Float(float)
+            }
             ValueNode::Function(function) => Value::Function(function.clone()),
             ValueNode::Integer(value_source) => Value::Integer(value_source.parse().unwrap()),
             ValueNode::String(value_source) => Value::string(value_source.clone()),

src/error.rs

@@ -176,6 +176,11 @@ pub enum Error {
     SerdeJson(String),
 
     ParserCancelled,
+
+    ParseFloat {
+        reason: String,
+    },
+
     ExpectedIterable {
         actual: Value,
     },
@@ -441,6 +446,13 @@ impl fmt::Display for Error {
                 f,
                 "Parsing was cancelled either manually or because it took too long."
             ),
+            ParseFloat { reason } => {
+                write!(
+                    f,
+                    "Failed to parse a float value. Reason given: {}.",
+                    reason
+                )
+            }
             ExpectedFunctionType { actual } => write!(f, "Expected a function but got {actual}."),
             ExpectedIterable { actual } => {
                 write!(f, "Expected an iterable value but got {actual}.")