add datetime expression, remove todo compileerror

crates/nu-engine/src/compile/builder.rs

@@ -137,6 +137,7 @@ impl BlockBuilder {
                     | Literal::String(_)
                     | Literal::RawString(_)
                     | Literal::CellPath(_)
+                    | Literal::Date(_)
                     | Literal::Nothing => (),
                 }
             }

crates/nu-engine/src/compile/expression.rs

@@ -46,11 +46,6 @@ pub(crate) fn compile_expression(
         builder.load_empty(out_reg)
     };
 
-    let todo = |msg: &str| CompileError::Todo {
-        msg: msg.into(),
-        span: Some(expr.span),
-    };
-
     let unexpected = |expr_name: &str| CompileError::UnexpectedExpression {
         expr_name: expr_name.into(),
         span: expr.span,
@@ -375,7 +370,7 @@ pub(crate) fn compile_expression(
         Expr::ValueWithUnit(value_with_unit) => {
             lit(builder, literal_from_value_with_unit(value_with_unit)?)
         }
-        Expr::DateTime(_) => Err(todo("DateTime")),
+        Expr::DateTime(dt) => lit(builder, Literal::Date(Box::new(*dt))),
         Expr::Filepath(path, no_expand) => {
             let val = builder.data(path)?;
             lit(

crates/nu-engine/src/eval_ir.rs

@@ -745,6 +745,7 @@ fn literal_value(
         Literal::String(s) => Value::string(ctx.get_str(*s, span)?, span),
         Literal::RawString(s) => Value::string(ctx.get_str(*s, span)?, span),
         Literal::CellPath(path) => Value::cell_path(CellPath::clone(&path), span),
+        Literal::Date(dt) => Value::date(**dt, span),
         Literal::Nothing => Value::nothing(span),
     })
 }

crates/nu-protocol/src/errors/compile_error.rs

@@ -128,12 +128,4 @@ pub enum CompileError {
         #[label("{msg}")]
         span: Span,
     },
-
-    #[error("TODO: {msg}")]
-    #[diagnostic(code(nu::compile::todo), help("IR compilation is a work in progress"))]
-    Todo {
-        msg: String,
-        #[label("not yet implemented")]
-        span: Option<Span>,
-    },
 }

crates/nu-protocol/src/ir/display.rs

@@ -323,6 +323,7 @@ impl<'a> fmt::Display for FmtLiteral<'a> {
             Literal::String(s) => write!(f, "string({})", FmtData(self.data, *s)),
             Literal::RawString(rs) => write!(f, "raw-string({})", FmtData(self.data, *rs)),
             Literal::CellPath(p) => write!(f, "cell-path({p})"),
+            Literal::Date(dt) => write!(f, "date({dt})"),
             Literal::Nothing => write!(f, "nothing"),
         }
     }

crates/nu-protocol/src/ir/mod.rs

@@ -6,6 +6,7 @@ use crate::{
     BlockId, DeclId, RegId, Span, Value, VarId,
 };
 
+use chrono::{DateTime, FixedOffset};
 use serde::{Deserialize, Serialize};
 
 mod call;
@@ -278,6 +279,7 @@ pub enum Literal {
     String(DataSlice),
     RawString(DataSlice),
     CellPath(Box<CellPath>),
+    Date(Box<DateTime<FixedOffset>>),
     Nothing,
 }
 

tests/eval/mod.rs

@@ -164,6 +164,11 @@ fn literal_raw_string() {
     test_eval(r#"r#'bazquux'#"#, Eq("bazquux"))
 }
 
+#[test]
+fn literal_date() {
+    test_eval("2020-01-01T00:00:00Z", Matches("2020"))
+}
+
 #[test]
 fn literal_nothing() {
     test_eval("null", Eq(""))