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|
//! See `CargoTargetSpec`
use ra_cfg::CfgExpr;
use ra_ide::{FileId, RunnableKind, TestId};
use ra_project_model::{self, ProjectWorkspace, TargetKind};
use crate::{global_state::GlobalStateSnapshot, Result};
/// Abstract representation of Cargo target.
///
/// We use it to cook up the set of cli args we need to pass to Cargo to
/// build/test/run the target.
#[derive(Clone)]
pub(crate) struct CargoTargetSpec {
pub(crate) package: String,
pub(crate) target: String,
pub(crate) target_kind: TargetKind,
}
impl CargoTargetSpec {
pub(crate) fn runnable_args(
spec: Option<CargoTargetSpec>,
kind: &RunnableKind,
cfgs: &[CfgExpr],
) -> Result<(Vec<String>, Vec<String>)> {
let mut args = Vec::new();
let mut extra_args = Vec::new();
match kind {
RunnableKind::Test { test_id, attr } => {
args.push("test".to_string());
if let Some(spec) = spec {
spec.push_to(&mut args, kind);
}
extra_args.push(test_id.to_string());
if let TestId::Path(_) = test_id {
extra_args.push("--exact".to_string());
}
extra_args.push("--nocapture".to_string());
if attr.ignore {
extra_args.push("--ignored".to_string());
}
}
RunnableKind::TestMod { path } => {
args.push("test".to_string());
if let Some(spec) = spec {
spec.push_to(&mut args, kind);
}
extra_args.push(path.to_string());
extra_args.push("--nocapture".to_string());
}
RunnableKind::Bench { test_id } => {
args.push("bench".to_string());
if let Some(spec) = spec {
spec.push_to(&mut args, kind);
}
extra_args.push(test_id.to_string());
if let TestId::Path(_) = test_id {
extra_args.push("--exact".to_string());
}
extra_args.push("--nocapture".to_string());
}
RunnableKind::DocTest { test_id } => {
args.push("test".to_string());
args.push("--doc".to_string());
if let Some(spec) = spec {
spec.push_to(&mut args, kind);
}
extra_args.push(test_id.to_string());
extra_args.push("--nocapture".to_string());
}
RunnableKind::Bin => {
args.push("run".to_string());
if let Some(spec) = spec {
spec.push_to(&mut args, kind);
}
}
}
let mut features = Vec::new();
for cfg in cfgs {
required_features(cfg, &mut features);
}
for feature in features {
args.push("--features".to_string());
args.push(feature);
}
Ok((args, extra_args))
}
pub(crate) fn for_file(
world: &GlobalStateSnapshot,
file_id: FileId,
) -> Result<Option<CargoTargetSpec>> {
let &crate_id = match world.analysis().crate_for(file_id)?.first() {
Some(crate_id) => crate_id,
None => return Ok(None),
};
let file_id = world.analysis().crate_root(crate_id)?;
let path = world.file_id_to_path(file_id);
let res = world.workspaces.iter().find_map(|ws| match ws {
ProjectWorkspace::Cargo { cargo, .. } => {
let tgt = cargo.target_by_root(&path)?;
Some(CargoTargetSpec {
package: cargo.package_flag(&cargo[cargo[tgt].package]),
target: cargo[tgt].name.clone(),
target_kind: cargo[tgt].kind,
})
}
ProjectWorkspace::Json { .. } => None,
});
Ok(res)
}
pub(crate) fn push_to(self, buf: &mut Vec<String>, kind: &RunnableKind) {
buf.push("--package".to_string());
buf.push(self.package);
// Can't mix --doc with other target flags
if let RunnableKind::DocTest { .. } = kind {
return;
}
match self.target_kind {
TargetKind::Bin => {
buf.push("--bin".to_string());
buf.push(self.target);
}
TargetKind::Test => {
buf.push("--test".to_string());
buf.push(self.target);
}
TargetKind::Bench => {
buf.push("--bench".to_string());
buf.push(self.target);
}
TargetKind::Example => {
buf.push("--example".to_string());
buf.push(self.target);
}
TargetKind::Lib => {
buf.push("--lib".to_string());
}
TargetKind::Other => (),
}
}
}
/// Fill minimal features needed
fn required_features(cfg_expr: &CfgExpr, features: &mut Vec<String>) {
match cfg_expr {
CfgExpr::KeyValue { key, value } if key == "feature" => features.push(value.to_string()),
CfgExpr::All(preds) => {
preds.iter().for_each(|cfg| required_features(cfg, features));
}
CfgExpr::Any(preds) => {
for cfg in preds {
let len_features = features.len();
required_features(cfg, features);
if len_features != features.len() {
break;
}
}
}
_ => {}
}
}
#[cfg(test)]
mod tests {
use super::*;
use mbe::{ast_to_token_tree, TokenMap};
use ra_cfg::parse_cfg;
use ra_syntax::{
ast::{self, AstNode},
SmolStr,
};
fn get_token_tree_generated(input: &str) -> (tt::Subtree, TokenMap) {
let source_file = ast::SourceFile::parse(input).ok().unwrap();
let tt = source_file.syntax().descendants().find_map(ast::TokenTree::cast).unwrap();
ast_to_token_tree(&tt).unwrap()
}
#[test]
fn test_cfg_expr_minimal_features_needed() {
let (subtree, _) = get_token_tree_generated(r#"#![cfg(feature = "baz")]"#);
let cfg_expr = parse_cfg(&subtree);
let mut min_features = vec![];
required_features(&cfg_expr, &mut min_features);
assert_eq!(min_features, vec![SmolStr::new("baz")]);
let (subtree, _) =
get_token_tree_generated(r#"#![cfg(all(feature = "baz", feature = "foo"))]"#);
let cfg_expr = parse_cfg(&subtree);
let mut min_features = vec![];
required_features(&cfg_expr, &mut min_features);
assert_eq!(min_features, vec![SmolStr::new("baz"), SmolStr::new("foo")]);
let (subtree, _) =
get_token_tree_generated(r#"#![cfg(any(feature = "baz", feature = "foo", unix))]"#);
let cfg_expr = parse_cfg(&subtree);
let mut min_features = vec![];
required_features(&cfg_expr, &mut min_features);
assert_eq!(min_features, vec![SmolStr::new("baz")]);
let (subtree, _) = get_token_tree_generated(r#"#![cfg(foo)]"#);
let cfg_expr = parse_cfg(&subtree);
let mut min_features = vec![];
required_features(&cfg_expr, &mut min_features);
assert!(min_features.is_empty());
}
}
|
