228 lines
7.7 KiB
Rust
228 lines
7.7 KiB
Rust
use std::{fs::read_to_string, path::PathBuf};
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use dust_lang::{Interpreter, Map, Result, Value};
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use egui::{Align, Color32, Layout, RichText, ScrollArea};
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use egui_extras::{Column, TableBuilder};
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use serde::{Deserialize, Serialize};
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#[derive(Deserialize, Serialize)]
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pub struct App {
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path: String,
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source: String,
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context: Map,
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#[serde(skip)]
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interpreter: Interpreter,
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output: Result<Value>,
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error: Option<String>,
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}
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impl App {
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pub fn new(cc: &eframe::CreationContext<'_>, path: PathBuf) -> Self {
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fn create_app(path: PathBuf) -> App {
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let context = Map::new();
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let mut interpreter = Interpreter::new(context.clone());
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let read_source = read_to_string(&path);
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let source = if let Ok(source) = read_source {
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source
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} else {
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String::new()
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};
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let output = interpreter.run(&source);
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App {
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path: path.to_string_lossy().to_string(),
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source,
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context,
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interpreter,
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output,
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error: None,
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}
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}
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cc.egui_ctx.set_zoom_factor(1.2);
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if path.is_file() {
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create_app(path)
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} else {
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if let Some(storage) = cc.storage {
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return eframe::get_value(storage, eframe::APP_KEY)
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.unwrap_or_else(|| create_app(path));
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} else {
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create_app(path)
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}
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}
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}
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}
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impl eframe::App for App {
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/// Called by the frame work to save state before shutdown.
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fn save(&mut self, storage: &mut dyn eframe::Storage) {
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eframe::set_value(storage, eframe::APP_KEY, self);
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}
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/// Called each time the UI needs repainting, which may be many times per second.
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fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
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egui::TopBottomPanel::top("top_panel").show(ctx, |ui| {
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egui::menu::bar(ui, |ui| {
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if ui.button("Quit").clicked() {
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ctx.send_viewport_cmd(egui::ViewportCommand::Close);
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}
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ui.add_space(16.0);
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egui::widgets::global_dark_light_mode_buttons(ui);
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ui.with_layout(Layout::right_to_left(Align::Max), |ui| {
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egui::warn_if_debug_build(ui);
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ui.hyperlink_to("source code", "https://git.jeffa.io/jeff/dust");
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});
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});
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});
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egui::CentralPanel::default().show(ctx, |ui| {
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ui.columns(2, |columns| {
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ScrollArea::vertical()
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.id_source("source")
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.show(&mut columns[0], |ui| {
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if let Some(error) = &self.error {
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ui.label(RichText::new(error).color(Color32::LIGHT_RED));
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}
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ui.text_edit_singleline(&mut self.path);
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ui.code_editor(&mut self.source);
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if ui.button("read").clicked() {
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match read_to_string(&self.path) {
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Ok(source) => {
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self.source = source;
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self.error = None;
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}
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Err(error) => self.error = Some(error.to_string()),
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}
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}
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if ui.button("run").clicked() {
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self.output = self.interpreter.run(&self.source);
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}
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});
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ScrollArea::vertical()
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.id_source("output")
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.show(&mut columns[1], |ui| match &self.output {
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Ok(value) => display_value(value, ui),
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Err(error) => {
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ui.label(RichText::new(error.to_string()).color(Color32::LIGHT_RED));
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display_value(&Value::Map(self.context.clone()), ui);
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match &self.output {
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Ok(value) => {
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display_value(value, ui);
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}
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Err(error) => {
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ui.label(error.to_string());
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}
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}
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}
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});
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});
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});
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}
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}
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fn display_value(value: &Value, ui: &mut egui::Ui) {
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match value {
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Value::List(list) => {
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let table = TableBuilder::new(ui)
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.striped(true)
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.resizable(true)
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.column(Column::auto())
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.column(Column::auto());
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table
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.header(20.0, |mut header| {
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header.col(|ui| {
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ui.strong("index");
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});
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})
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.body(|mut body| {
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for (index, value) in list.items().iter().enumerate() {
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body.row(20.0, |mut row| {
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row.col(|ui| {
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ui.label(index.to_string());
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});
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row.col(|ui| {
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display_value(value, ui);
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});
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});
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}
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});
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}
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Value::Map(map) => {
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let table = TableBuilder::new(ui)
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.striped(true)
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.resizable(true)
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.column(Column::auto())
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.column(Column::auto());
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table
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.header(20.0, |mut header| {
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header.col(|ui| {
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ui.strong("key");
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});
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})
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.body(|mut body| {
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for (key, (value, _)) in map.variables().unwrap().iter() {
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body.row(20.0, |mut row| {
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row.col(|ui| {
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ui.label(key);
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});
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row.col(|ui| {
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display_value(value, ui);
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});
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});
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}
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});
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}
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Value::Function(function) => {
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ui.label(function.to_string());
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}
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Value::String(string) => {
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ui.label(RichText::new(string.read().unwrap().as_str()).color(Color32::GREEN));
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}
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Value::Float(float) => {
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ui.label(float.to_string());
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}
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Value::Integer(integer) => {
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ui.label(RichText::new(integer.to_string()).color(Color32::BLUE));
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}
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Value::Boolean(boolean) => {
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ui.label(RichText::new(boolean.to_string()).color(Color32::RED));
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}
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Value::Option(option) => match option {
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Some(value) => {
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let table = TableBuilder::new(ui)
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.striped(true)
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.resizable(true)
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.column(Column::auto());
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table
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.header(20.0, |mut header| {
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header.col(|ui| {
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ui.strong("some");
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});
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})
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.body(|mut body| {
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body.row(20.0, |mut row| {
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row.col(|ui| {
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display_value(value, ui);
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});
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});
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});
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}
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None => {
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ui.label("none");
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}
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},
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}
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}
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