Write test; Add toml tooling; Fix errors

src/bin/gui.rs

@@ -1,6 +1,6 @@
-use dust_lib::eval;
+use dust_lib::{eval, Value};
-use iced::widget::{button, column, container, scrollable, text, text_input, Column, Text};
+use iced::widget::{column, container, text, text_input, Column};
-use iced::{executor, Alignment, Application, Command, Element, Sandbox, Settings, Theme};
+use iced::{executor, Application, Command, Element, Sandbox, Settings, Theme};
 use once_cell::sync::Lazy;
 
 static INPUT_ID: Lazy<text_input::Id> = Lazy::new(text_input::Id::unique);
@@ -69,7 +69,7 @@ impl Application for DustGui {
             let mut text_widgets = Vec::new();
 
             for result in &self.results {
-                text_widgets.push(text(result).into());
+                // text_widgets.push(text(result).style().into());
             }
 
             text_widgets.reverse();
@@ -86,3 +86,7 @@ enum Message {
     TextInput(String),
     Evaluate,
 }
+
+struct DustOutput {
+    content: dust_lib::Result<Value>,
+}

src/error.rs

@@ -293,6 +293,12 @@ impl From<trash::Error> for Error {
     }
 }
 
+impl From<toml::de::Error> for Error {
+    fn from(value: toml::de::Error) -> Self {
+        Error::MacroFailure(value.to_string())
+    }
+}
+
 impl Error {
     pub(crate) fn expect_operator_argument_amount(actual: usize, expected: usize) -> Result<()> {
         if actual == expected {

src/tools/data_formats.rs

@@ -2,6 +2,26 @@
 
 use crate::{Result, Table, Tool, ToolInfo, Value, ValueType};
 
+pub struct FromToml;
+
+impl Tool for FromToml {
+    fn info(&self) -> ToolInfo<'static> {
+        ToolInfo {
+            identifier: "from_toml",
+            description: "Create a value from a TOML string.",
+            group: "data",
+            inputs: vec![ValueType::String],
+        }
+    }
+
+    fn run(&self, argument: &Value) -> Result<Value> {
+        let argument = argument.as_string()?;
+        let value = toml::from_str(&argument)?;
+
+        Ok(value)
+    }
+}
+
 pub struct FromJson;
 
 impl Tool for FromJson {

src/value/time.rs

@@ -10,7 +10,7 @@
 
 use std::{
     fmt::{self, Display, Formatter},
-    time::{Duration, Instant, SystemTime, UNIX_EPOCH},
+    time::{Instant, SystemTime},
 };
 
 use chrono::{DateTime, FixedOffset, Local as LocalTime, NaiveDateTime};

tests/data_formats.ds

@@ -0,0 +1,4 @@
+dob = from_toml("1979-05-27T07:32:00-08:00");
+toml = to_toml(dob);
+
+assert_equal(toml, "1979-05-27T07:32:00-08:00");

tests/dust_tests.rs

@@ -36,3 +36,10 @@ fn scope() {
 
     eval(&file_contents).unwrap();
 }
+
+#[test]
+fn data_formats() {
+    let file_contents = read_to_string("tests/data_formats.ds").unwrap();
+
+    eval(&file_contents).unwrap();
+}