Make eval compile again

src/eval/command.rs

@@ -0,0 +1,36 @@
+use std::collections::HashMap;
+
+use chrono::NaiveDate;
+
+use crate::files::SourcedCommand;
+
+use super::{DateRange, Entry, Result};
+
+pub struct CommandState<'a> {
+    command: SourcedCommand<'a>,
+    range: DateRange,
+
+    from: Option<NaiveDate>,
+    until: Option<NaiveDate>,
+    entries: HashMap<NaiveDate, Entry>,
+}
+
+impl<'a> CommandState<'a> {
+    pub fn new(command: SourcedCommand<'a>, range: DateRange) -> Self {
+        Self {
+            range,
+            command,
+            from: None,
+            until: None,
+            entries: HashMap::new(),
+        }
+    }
+
+    pub fn eval(self) -> Result<Self> {
+        todo!()
+    }
+
+    pub fn entries(self) -> Vec<Entry> {
+        self.entries.into_values().collect()
+    }
+}

src/eval/error.rs

@@ -0,0 +1,23 @@
+use std::result;
+
+use chrono::NaiveDate;
+
+use crate::files::commands::{Span, Time};
+
+#[derive(Debug)]
+pub enum Error {
+    DeltaInvalidStep {
+        span: Span,
+        start: NaiveDate,
+        start_time: Option<Time>,
+        prev: NaiveDate,
+        prev_time: Option<Time>,
+    },
+    DeltaNoTime {
+        span: Span,
+        start: NaiveDate,
+        prev: NaiveDate,
+    },
+}
+
+pub type Result<T> = result::Result<T, Error>;