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//! `.yui` screen files (the screen designer's format) — regenerating their
//! code (`.yog-build/generated/**/*.g.rs`, what the code-behind pulls in
//! with `yog_api::ui_include!`) when one is saved, through `yog ui gen` —
//! and the same for `.yres` resource files (`resources/<Set>.g.rs`,
//! through `yog res check`).
use std::path::PathBuf;
use yog_ids::Format;
/// Runs `yog ui gen <path>` in the file's folder, so a saved screen's
/// generated `foo.g.rs` is current without a full build (`yog` finds the
/// project from the `yog.toml` above the file). The result carries what
/// `yog` found either way — its errors and warnings go to the Error List;
/// `Err` only when `yog` couldn't run at all.
pub fn codegen(path: &str) -> Result<Codegen, String> {
let file = PathBuf::from(path);
let args: &[&str] = match Format::of_path(&file) {
Some(Format::Ui) => &["ui", "gen"],
// Regenerates `.yog-build/generated/resources/<Set>.g.rs` (and checks the set).
Some(Format::Res) => &["res", "check"],
// Regenerates `.yog-build/generated/yog-content.g.rs` and its parts (and checks every content file).
Some(Format::Block | Format::Item) => &["content", "check"],
_ => return Err(format!("not a .yui, .yres, .yblock or .yitem file: {path}")),
};
let mut command = crate::design::this_cli();
command.args(args);
if args[0] == "ui" {
command.arg(&file);
}
// `yog res check` / `yog content check` work on the project in the current folder.
let project = file
.ancestors()
.skip(1)
.find(|d| crate::design::project::path(d).is_file());
let dir = (if args[0] != "ui" { project } else { None })
.or(file.parent())
.filter(|d| d.is_dir());
if let Some(dir) = dir {
command.current_dir(dir);
}
let (output, problems) = crate::diagnostics::collected(&mut command)
.map_err(|e| format!("failed to run yog: {e}"))?;
let failed = || {
let errors: Vec<String> = problems
.iter()
.filter(|d| d.is_error())
.map(ToString::to_string)
.collect();
if errors.is_empty() {
format!("yog {} failed ({})", args.join(" "), output.status)
} else {
errors.join("\n")
}
};
Ok(Codegen {
error: (!output.status.success()).then(failed),
root: project
.map(|d| d.to_string_lossy().into_owned())
.unwrap_or_default(),
problems,
})
}
/// One regeneration: the failure's message, and what `yog` found — each
/// record's file relative to `root`, the project's folder.
#[derive(yog_data::Schema)]
pub struct Codegen {
pub error: Option<String>,
pub problems: Vec<yog_data::Diagnostic>,
pub root: String,
}