use crate::path; use crate::DynError; use helix_view::theme::Loader; use helix_view::theme::Modifier; use helix_view::Theme; struct Rule { fg: Option<&'static str>, bg: Option<&'static str>, check_both: bool, } enum Require { Existence(Rule), Difference(&'static str, &'static str), } // Placed in an fn here, so it's the first thing you see fn get_rules() -> Vec { vec![ // Check for ui.selection, which is required Require::Existence(Rule::has_either("ui.selection")), Require::Existence(Rule::has_either("ui.selection.primary")), Require::Difference("ui.selection", "ui.selection.primary"), // Check for planned readable text Require::Existence(Rule::has_fg("ui.text")), Require::Existence(Rule::has_bg("ui.background")), // Check for complete editor.statusline bare minimum Require::Existence(Rule::has_both("ui.statusline")), Require::Existence(Rule::has_both("ui.statusline.inactive")), // Check for editor.color-modes Require::Existence(Rule::has_either("ui.statusline.normal")), Require::Existence(Rule::has_either("ui.statusline.insert")), Require::Existence(Rule::has_either("ui.statusline.select")), Require::Difference("ui.statusline.normal", "ui.statusline.insert"), Require::Difference("ui.statusline.normal", "ui.statusline.select"), // Check for editor.cursorline Require::Existence(Rule::has_bg("ui.cursorline.primary")), // Check for editor.whitespace Require::Existence(Rule::has_fg("ui.virtual.whitespace")), // Check fir rulers Require::Existence(Rule::has_either("ui.virtual.indent-guide")), // Check for editor.rulers Require::Existence(Rule::has_either("ui.virtual.ruler")), // Check for menus and prompts Require::Existence(Rule::has_both("ui.menu")), Require::Existence(Rule::has_both("ui.help")), Require::Existence(Rule::has_bg("ui.popup")), Require::Existence(Rule::has_either("ui.window")), // Check for visible cursor Require::Existence(Rule::has_bg("ui.cursor.primary")), Require::Existence(Rule::has_either("ui.cursor.match")), ] } impl Rule { fn has_bg(bg: &'static str) -> Rule { Rule { fg: None, bg: Some(bg), check_both: true, } } fn has_fg(fg: &'static str) -> Rule { Rule { fg: Some(fg), bg: None, check_both: true, } } fn has_either(item: &'static str) -> Rule { Rule { fg: Some(item), bg: Some(item), check_both: false, } } fn has_both(item: &'static str) -> Rule { Rule { fg: Some(item), bg: Some(item), check_both: true, } } fn found_fg(&self, theme: &Theme) -> bool { if let Some(fg) = &self.fg { if theme.get(fg).fg.is_none() && theme.get(fg).add_modifier == Modifier::empty() { return false; } } true } fn found_bg(&self, theme: &Theme) -> bool { if let Some(bg) = &self.bg { if theme.get(bg).bg.is_none() && theme.get(bg).add_modifier == Modifier::empty() { return false; } } true } fn rule_name(&self) -> &'static str { if self.fg.is_some() { self.fg.unwrap() } else if self.bg.is_some() { self.bg.unwrap() } else { "LINTER_ERROR_NO_RULE" } } fn check_difference( theme: &Theme, a: &'static str, b: &'static str, messages: &mut Vec, ) { let theme_a = theme.get(a); let theme_b = theme.get(b); if theme_a == theme_b { messages.push(format!("$THEME: `{}` and `{}` cannot be equal", a, b)); } } fn check_existence(rule: &Rule, theme: &Theme, messages: &mut Vec) { let found_fg = rule.found_fg(theme); let found_bg = rule.found_bg(theme); if !rule.check_both && (found_fg || found_bg) { return; } if !found_fg || !found_bg { let mut missing = vec![]; if !found_fg { missing.push("`fg`"); } if !found_bg { missing.push("`bg`"); } let entry = if !rule.check_both && !found_fg && !found_bg { missing.join(" or ") } else { missing.join(" and ") }; messages.push(format!( "$THEME: missing {} for `{}`", entry, rule.rule_name() )) } } } pub fn lint(file: String) -> Result<(), DynError> { if file.contains("base16") { println!("Skipping base16: {}", file); return Ok(()); } let path = path::themes().join(file.clone() + ".toml"); let theme = std::fs::read_to_string(path).unwrap(); let theme: Theme = toml::from_str(&theme).expect("Failed to parse theme"); let mut messages: Vec = vec![]; get_rules().iter().for_each(|lint| match lint { Require::Existence(rule) => Rule::check_existence(rule, &theme, &mut messages), Require::Difference(a, b) => Rule::check_difference(&theme, a, b, &mut messages), }); if !messages.is_empty() { messages.iter().for_each(|m| { let theme = file.clone(); let message = m.replace("$THEME", theme.as_str()); println!("{}", message); }); Err(format!("{} has issues", file).into()) } else { Ok(()) } } pub fn lint_all() -> Result<(), DynError> { let files = Loader::read_names(path::themes().as_path()); let files_count = files.len(); let ok_files_count = files .into_iter() .filter_map(|path| lint(path.replace(".toml", "")).ok()) .count(); if files_count != ok_files_count { Err(format!( "{} of {} themes had issues", files_count - ok_files_count, files_count ) .into()) } else { Ok(()) } }