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|
//! FIXME: write short doc here
mod expr;
mod match_check;
mod unsafe_check;
use std::any::Any;
use hir_def::DefWithBodyId;
use hir_expand::diagnostics::{Diagnostic, DiagnosticSink};
use hir_expand::{name::Name, HirFileId, InFile};
use ra_syntax::{ast, AstPtr, SyntaxNodePtr};
use stdx::format_to;
use crate::db::HirDatabase;
pub use crate::diagnostics::expr::{record_literal_missing_fields, record_pattern_missing_fields};
pub fn validate_body(db: &dyn HirDatabase, owner: DefWithBodyId, sink: &mut DiagnosticSink<'_>) {
let _p = profile::span("validate_body");
let infer = db.infer(owner);
infer.add_diagnostics(db, owner, sink);
let mut validator = expr::ExprValidator::new(owner, infer.clone(), sink);
validator.validate_body(db);
let mut validator = unsafe_check::UnsafeValidator::new(owner, infer, sink);
validator.validate_body(db);
}
#[derive(Debug)]
pub struct NoSuchField {
pub file: HirFileId,
pub field: AstPtr<ast::RecordExprField>,
}
impl Diagnostic for NoSuchField {
fn message(&self) -> String {
"no such field".to_string()
}
fn display_source(&self) -> InFile<SyntaxNodePtr> {
InFile::new(self.file, self.field.clone().into())
}
fn as_any(&self) -> &(dyn Any + Send + 'static) {
self
}
}
#[derive(Debug)]
pub struct MissingFields {
pub file: HirFileId,
pub field_list_parent: AstPtr<ast::RecordExpr>,
pub field_list_parent_path: Option<AstPtr<ast::Path>>,
pub missed_fields: Vec<Name>,
}
impl Diagnostic for MissingFields {
fn message(&self) -> String {
let mut buf = String::from("Missing structure fields:\n");
for field in &self.missed_fields {
format_to!(buf, "- {}\n", field);
}
buf
}
fn display_source(&self) -> InFile<SyntaxNodePtr> {
InFile {
file_id: self.file,
value: self
.field_list_parent_path
.clone()
.map(SyntaxNodePtr::from)
.unwrap_or_else(|| self.field_list_parent.clone().into()),
}
}
fn as_any(&self) -> &(dyn Any + Send + 'static) {
self
}
}
#[derive(Debug)]
pub struct MissingPatFields {
pub file: HirFileId,
pub field_list_parent: AstPtr<ast::RecordPat>,
pub field_list_parent_path: Option<AstPtr<ast::Path>>,
pub missed_fields: Vec<Name>,
}
impl Diagnostic for MissingPatFields {
fn message(&self) -> String {
let mut buf = String::from("Missing structure fields:\n");
for field in &self.missed_fields {
format_to!(buf, "- {}\n", field);
}
buf
}
fn display_source(&self) -> InFile<SyntaxNodePtr> {
InFile {
file_id: self.file,
value: self
.field_list_parent_path
.clone()
.map(SyntaxNodePtr::from)
.unwrap_or_else(|| self.field_list_parent.clone().into()),
}
}
fn as_any(&self) -> &(dyn Any + Send + 'static) {
self
}
}
#[derive(Debug)]
pub struct MissingMatchArms {
pub file: HirFileId,
pub match_expr: AstPtr<ast::Expr>,
pub arms: AstPtr<ast::MatchArmList>,
}
impl Diagnostic for MissingMatchArms {
fn message(&self) -> String {
String::from("Missing match arm")
}
fn display_source(&self) -> InFile<SyntaxNodePtr> {
InFile { file_id: self.file, value: self.match_expr.clone().into() }
}
fn as_any(&self) -> &(dyn Any + Send + 'static) {
self
}
}
#[derive(Debug)]
pub struct MissingOkInTailExpr {
pub file: HirFileId,
pub expr: AstPtr<ast::Expr>,
}
impl Diagnostic for MissingOkInTailExpr {
fn message(&self) -> String {
"wrap return expression in Ok".to_string()
}
fn display_source(&self) -> InFile<SyntaxNodePtr> {
InFile { file_id: self.file, value: self.expr.clone().into() }
}
fn as_any(&self) -> &(dyn Any + Send + 'static) {
self
}
}
#[derive(Debug)]
pub struct BreakOutsideOfLoop {
pub file: HirFileId,
pub expr: AstPtr<ast::Expr>,
}
impl Diagnostic for BreakOutsideOfLoop {
fn message(&self) -> String {
"break outside of loop".to_string()
}
fn display_source(&self) -> InFile<SyntaxNodePtr> {
InFile { file_id: self.file, value: self.expr.clone().into() }
}
fn as_any(&self) -> &(dyn Any + Send + 'static) {
self
}
}
#[derive(Debug)]
pub struct MissingUnsafe {
pub file: HirFileId,
pub expr: AstPtr<ast::Expr>,
}
impl Diagnostic for MissingUnsafe {
fn message(&self) -> String {
format!("This operation is unsafe and requires an unsafe function or block")
}
fn display_source(&self) -> InFile<SyntaxNodePtr> {
InFile { file_id: self.file, value: self.expr.clone().into() }
}
fn as_any(&self) -> &(dyn Any + Send + 'static) {
self
}
}
#[derive(Debug)]
pub struct MismatchedArgCount {
pub file: HirFileId,
pub call_expr: AstPtr<ast::Expr>,
pub expected: usize,
pub found: usize,
}
impl Diagnostic for MismatchedArgCount {
fn message(&self) -> String {
let s = if self.expected == 1 { "" } else { "s" };
format!("Expected {} argument{}, found {}", self.expected, s, self.found)
}
fn display_source(&self) -> InFile<SyntaxNodePtr> {
InFile { file_id: self.file, value: self.call_expr.clone().into() }
}
fn as_any(&self) -> &(dyn Any + Send + 'static) {
self
}
fn is_experimental(&self) -> bool {
true
}
}
#[cfg(test)]
mod tests {
use hir_def::{db::DefDatabase, AssocItemId, ModuleDefId};
use hir_expand::{
db::AstDatabase,
diagnostics::{Diagnostic, DiagnosticSinkBuilder},
};
use ra_db::{fixture::WithFixture, FileId, SourceDatabase, SourceDatabaseExt};
use ra_syntax::{TextRange, TextSize};
use rustc_hash::FxHashMap;
use crate::{diagnostics::validate_body, test_db::TestDB};
impl TestDB {
fn diagnostics<F: FnMut(&dyn Diagnostic)>(&self, mut cb: F) {
let crate_graph = self.crate_graph();
for krate in crate_graph.iter() {
let crate_def_map = self.crate_def_map(krate);
let mut fns = Vec::new();
for (module_id, _) in crate_def_map.modules.iter() {
for decl in crate_def_map[module_id].scope.declarations() {
if let ModuleDefId::FunctionId(f) = decl {
fns.push(f)
}
}
for impl_id in crate_def_map[module_id].scope.impls() {
let impl_data = self.impl_data(impl_id);
for item in impl_data.items.iter() {
if let AssocItemId::FunctionId(f) = item {
fns.push(*f)
}
}
}
}
for f in fns {
let mut sink = DiagnosticSinkBuilder::new().build(&mut cb);
validate_body(self, f.into(), &mut sink);
}
}
}
}
pub(crate) fn check_diagnostics(ra_fixture: &str) {
let db = TestDB::with_files(ra_fixture);
let annotations = db.extract_annotations();
let mut actual: FxHashMap<FileId, Vec<(TextRange, String)>> = FxHashMap::default();
db.diagnostics(|d| {
let src = d.display_source();
let root = db.parse_or_expand(src.file_id).unwrap();
// FIXME: macros...
let file_id = src.file_id.original_file(&db);
let range = src.value.to_node(&root).text_range();
let message = d.message().to_owned();
actual.entry(file_id).or_default().push((range, message));
});
for (file_id, diags) in actual.iter_mut() {
diags.sort_by_key(|it| it.0.start());
let text = db.file_text(*file_id);
// For multiline spans, place them on line start
for (range, content) in diags {
if text[*range].contains('\n') {
*range = TextRange::new(range.start(), range.start() + TextSize::from(1));
*content = format!("... {}", content);
}
}
}
assert_eq!(annotations, actual);
}
#[test]
fn no_such_field_diagnostics() {
check_diagnostics(
r#"
struct S { foo: i32, bar: () }
impl S {
fn new() -> S {
S {
//^ Missing structure fields:
//| - bar
foo: 92,
baz: 62,
//^^^^^^^ no such field
}
}
}
"#,
);
}
#[test]
fn no_such_field_with_feature_flag_diagnostics() {
check_diagnostics(
r#"
//- /lib.rs crate:foo cfg:feature=foo
struct MyStruct {
my_val: usize,
#[cfg(feature = "foo")]
bar: bool,
}
impl MyStruct {
#[cfg(feature = "foo")]
pub(crate) fn new(my_val: usize, bar: bool) -> Self {
Self { my_val, bar }
}
#[cfg(not(feature = "foo"))]
pub(crate) fn new(my_val: usize, _bar: bool) -> Self {
Self { my_val }
}
}
"#,
);
}
#[test]
fn no_such_field_enum_with_feature_flag_diagnostics() {
check_diagnostics(
r#"
//- /lib.rs crate:foo cfg:feature=foo
enum Foo {
#[cfg(not(feature = "foo"))]
Buz,
#[cfg(feature = "foo")]
Bar,
Baz
}
fn test_fn(f: Foo) {
match f {
Foo::Bar => {},
Foo::Baz => {},
}
}
"#,
);
}
#[test]
fn no_such_field_with_feature_flag_diagnostics_on_struct_lit() {
check_diagnostics(
r#"
//- /lib.rs crate:foo cfg:feature=foo
struct S {
#[cfg(feature = "foo")]
foo: u32,
#[cfg(not(feature = "foo"))]
bar: u32,
}
impl S {
#[cfg(feature = "foo")]
fn new(foo: u32) -> Self {
Self { foo }
}
#[cfg(not(feature = "foo"))]
fn new(bar: u32) -> Self {
Self { bar }
}
fn new2(bar: u32) -> Self {
#[cfg(feature = "foo")]
{ Self { foo: bar } }
#[cfg(not(feature = "foo"))]
{ Self { bar } }
}
fn new2(val: u32) -> Self {
Self {
#[cfg(feature = "foo")]
foo: val,
#[cfg(not(feature = "foo"))]
bar: val,
}
}
}
"#,
);
}
#[test]
fn no_such_field_with_type_macro() {
check_diagnostics(
r#"
macro_rules! Type { () => { u32 }; }
struct Foo { bar: Type![] }
impl Foo {
fn new() -> Self {
Foo { bar: 0 }
}
}
"#,
);
}
#[test]
fn missing_record_pat_field_diagnostic() {
check_diagnostics(
r#"
struct S { foo: i32, bar: () }
fn baz(s: S) {
let S { foo: _ } = s;
//^ Missing structure fields:
//| - bar
}
"#,
);
}
#[test]
fn missing_record_pat_field_no_diagnostic_if_not_exhaustive() {
check_diagnostics(
r"
struct S { foo: i32, bar: () }
fn baz(s: S) -> i32 {
match s {
S { foo, .. } => foo,
}
}
",
)
}
#[test]
fn break_outside_of_loop() {
check_diagnostics(
r#"
fn foo() { break; }
//^^^^^ break outside of loop
"#,
);
}
}
|