Rename ra_hir_def -> hir_def

1 files changed, 0 insertions, 360 deletions

diff --git a/crates/ra_hir_def/src/body.rs b/crates/ra_hir_def/src/body.rs
deleted file mode 100644
index 9a9a605dd..000000000
--- a/crates/ra_hir_def/src/body.rs
+++ /dev/null
@@ -1,360 +0,0 @@
-//! Defines `Body`: a lowered representation of bodies of functions, statics and
-//! consts.
-mod lower;
-pub mod scope;
-
-use std::{mem, ops::Index, sync::Arc};
-
-use arena::{map::ArenaMap, Arena};
-use base_db::CrateId;
-use cfg::CfgOptions;
-use drop_bomb::DropBomb;
-use either::Either;
-use hir_expand::{ast_id_map::AstIdMap, hygiene::Hygiene, AstId, HirFileId, InFile, MacroDefId};
-use rustc_hash::FxHashMap;
-use syntax::{ast, AstNode, AstPtr};
-use test_utils::mark;
-
-pub(crate) use lower::LowerCtx;
-
-use crate::{
-    attr::Attrs,
-    db::DefDatabase,
-    expr::{Expr, ExprId, Pat, PatId},
-    item_scope::BuiltinShadowMode,
-    item_scope::ItemScope,
-    nameres::CrateDefMap,
-    path::{ModPath, Path},
-    src::HasSource,
-    AsMacroCall, DefWithBodyId, HasModule, Lookup, ModuleId,
-};
-
-/// A subset of Expander that only deals with cfg attributes. We only need it to
-/// avoid cyclic queries in crate def map during enum processing.
-pub(crate) struct CfgExpander {
-    cfg_options: CfgOptions,
-    hygiene: Hygiene,
-}
-
-pub(crate) struct Expander {
-    cfg_expander: CfgExpander,
-    crate_def_map: Arc<CrateDefMap>,
-    current_file_id: HirFileId,
-    ast_id_map: Arc<AstIdMap>,
-    module: ModuleId,
-    recursion_limit: usize,
-}
-
-#[cfg(test)]
-const EXPANSION_RECURSION_LIMIT: usize = 32;
-
-#[cfg(not(test))]
-const EXPANSION_RECURSION_LIMIT: usize = 128;
-
-impl CfgExpander {
-    pub(crate) fn new(
-        db: &dyn DefDatabase,
-        current_file_id: HirFileId,
-        krate: CrateId,
-    ) -> CfgExpander {
-        let hygiene = Hygiene::new(db.upcast(), current_file_id);
-        let cfg_options = db.crate_graph()[krate].cfg_options.clone();
-        CfgExpander { cfg_options, hygiene }
-    }
-
-    pub(crate) fn parse_attrs(&self, owner: &dyn ast::AttrsOwner) -> Attrs {
-        Attrs::new(owner, &self.hygiene)
-    }
-
-    pub(crate) fn is_cfg_enabled(&self, owner: &dyn ast::AttrsOwner) -> bool {
-        let attrs = self.parse_attrs(owner);
-        attrs.is_cfg_enabled(&self.cfg_options)
-    }
-}
-
-impl Expander {
-    pub(crate) fn new(
-        db: &dyn DefDatabase,
-        current_file_id: HirFileId,
-        module: ModuleId,
-    ) -> Expander {
-        let cfg_expander = CfgExpander::new(db, current_file_id, module.krate);
-        let crate_def_map = db.crate_def_map(module.krate);
-        let ast_id_map = db.ast_id_map(current_file_id);
-        Expander {
-            cfg_expander,
-            crate_def_map,
-            current_file_id,
-            ast_id_map,
-            module,
-            recursion_limit: 0,
-        }
-    }
-
-    pub(crate) fn enter_expand<T: ast::AstNode>(
-        &mut self,
-        db: &dyn DefDatabase,
-        local_scope: Option<&ItemScope>,
-        macro_call: ast::MacroCall,
-    ) -> Option<(Mark, T)> {
-        self.recursion_limit += 1;
-        if self.recursion_limit > EXPANSION_RECURSION_LIMIT {
-            mark::hit!(your_stack_belongs_to_me);
-            return None;
-        }
-
-        let macro_call = InFile::new(self.current_file_id, &macro_call);
-
-        if let Some(call_id) = macro_call.as_call_id(db, self.crate_def_map.krate, |path| {
-            if let Some(local_scope) = local_scope {
-                if let Some(def) = path.as_ident().and_then(|n| local_scope.get_legacy_macro(n)) {
-                    return Some(def);
-                }
-            }
-            self.resolve_path_as_macro(db, &path)
-        }) {
-            let file_id = call_id.as_file();
-            if let Some(node) = db.parse_or_expand(file_id) {
-                if let Some(expr) = T::cast(node) {
-                    log::debug!("macro expansion {:#?}", expr.syntax());
-
-                    let mark = Mark {
-                        file_id: self.current_file_id,
-                        ast_id_map: mem::take(&mut self.ast_id_map),
-                        bomb: DropBomb::new("expansion mark dropped"),
-                    };
-                    self.cfg_expander.hygiene = Hygiene::new(db.upcast(), file_id);
-                    self.current_file_id = file_id;
-                    self.ast_id_map = db.ast_id_map(file_id);
-                    return Some((mark, expr));
-                }
-            }
-        }
-
-        // FIXME: Instead of just dropping the error from expansion
-        // report it
-        None
-    }
-
-    pub(crate) fn exit(&mut self, db: &dyn DefDatabase, mut mark: Mark) {
-        self.cfg_expander.hygiene = Hygiene::new(db.upcast(), mark.file_id);
-        self.current_file_id = mark.file_id;
-        self.ast_id_map = mem::take(&mut mark.ast_id_map);
-        self.recursion_limit -= 1;
-        mark.bomb.defuse();
-    }
-
-    pub(crate) fn to_source<T>(&self, value: T) -> InFile<T> {
-        InFile { file_id: self.current_file_id, value }
-    }
-
-    pub(crate) fn is_cfg_enabled(&self, owner: &dyn ast::AttrsOwner) -> bool {
-        self.cfg_expander.is_cfg_enabled(owner)
-    }
-
-    fn parse_path(&mut self, path: ast::Path) -> Option<Path> {
-        Path::from_src(path, &self.cfg_expander.hygiene)
-    }
-
-    fn resolve_path_as_macro(&self, db: &dyn DefDatabase, path: &ModPath) -> Option<MacroDefId> {
-        self.crate_def_map
-            .resolve_path(db, self.module.local_id, path, BuiltinShadowMode::Other)
-            .0
-            .take_macros()
-    }
-
-    fn ast_id<N: AstNode>(&self, item: &N) -> AstId<N> {
-        let file_local_id = self.ast_id_map.ast_id(item);
-        AstId::new(self.current_file_id, file_local_id)
-    }
-}
-
-pub(crate) struct Mark {
-    file_id: HirFileId,
-    ast_id_map: Arc<AstIdMap>,
-    bomb: DropBomb,
-}
-
-/// The body of an item (function, const etc.).
-#[derive(Debug, Eq, PartialEq)]
-pub struct Body {
-    pub exprs: Arena<Expr>,
-    pub pats: Arena<Pat>,
-    /// The patterns for the function's parameters. While the parameter types are
-    /// part of the function signature, the patterns are not (they don't change
-    /// the external type of the function).
-    ///
-    /// If this `Body` is for the body of a constant, this will just be
-    /// empty.
-    pub params: Vec<PatId>,
-    /// The `ExprId` of the actual body expression.
-    pub body_expr: ExprId,
-    pub item_scope: ItemScope,
-}
-
-pub type ExprPtr = AstPtr<ast::Expr>;
-pub type ExprSource = InFile<ExprPtr>;
-
-pub type PatPtr = Either<AstPtr<ast::Pat>, AstPtr<ast::SelfParam>>;
-pub type PatSource = InFile<PatPtr>;
-
-/// An item body together with the mapping from syntax nodes to HIR expression
-/// IDs. This is needed to go from e.g. a position in a file to the HIR
-/// expression containing it; but for type inference etc., we want to operate on
-/// a structure that is agnostic to the actual positions of expressions in the
-/// file, so that we don't recompute types whenever some whitespace is typed.
-///
-/// One complication here is that, due to macro expansion, a single `Body` might
-/// be spread across several files. So, for each ExprId and PatId, we record
-/// both the HirFileId and the position inside the file. However, we only store
-/// AST -> ExprId mapping for non-macro files, as it is not clear how to handle
-/// this properly for macros.
-#[derive(Default, Debug, Eq, PartialEq)]
-pub struct BodySourceMap {
-    expr_map: FxHashMap<ExprSource, ExprId>,
-    expr_map_back: ArenaMap<ExprId, Result<ExprSource, SyntheticSyntax>>,
-    pat_map: FxHashMap<PatSource, PatId>,
-    pat_map_back: ArenaMap<PatId, Result<PatSource, SyntheticSyntax>>,
-    field_map: FxHashMap<(ExprId, usize), InFile<AstPtr<ast::RecordExprField>>>,
-    expansions: FxHashMap<InFile<AstPtr<ast::MacroCall>>, HirFileId>,
-}
-
-#[derive(Default, Debug, Eq, PartialEq, Clone, Copy)]
-pub struct SyntheticSyntax;
-
-impl Body {
-    pub(crate) fn body_with_source_map_query(
-        db: &dyn DefDatabase,
-        def: DefWithBodyId,
-    ) -> (Arc<Body>, Arc<BodySourceMap>) {
-        let _p = profile::span("body_with_source_map_query");
-        let mut params = None;
-
-        let (file_id, module, body) = match def {
-            DefWithBodyId::FunctionId(f) => {
-                let f = f.lookup(db);
-                let src = f.source(db);
-                params = src.value.param_list();
-                (src.file_id, f.module(db), src.value.body().map(ast::Expr::from))
-            }
-            DefWithBodyId::ConstId(c) => {
-                let c = c.lookup(db);
-                let src = c.source(db);
-                (src.file_id, c.module(db), src.value.body())
-            }
-            DefWithBodyId::StaticId(s) => {
-                let s = s.lookup(db);
-                let src = s.source(db);
-                (src.file_id, s.module(db), src.value.body())
-            }
-        };
-        let expander = Expander::new(db, file_id, module);
-        let (body, source_map) = Body::new(db, def, expander, params, body);
-        (Arc::new(body), Arc::new(source_map))
-    }
-
-    pub(crate) fn body_query(db: &dyn DefDatabase, def: DefWithBodyId) -> Arc<Body> {
-        db.body_with_source_map(def).0
-    }
-
-    fn new(
-        db: &dyn DefDatabase,
-        def: DefWithBodyId,
-        expander: Expander,
-        params: Option<ast::ParamList>,
-        body: Option<ast::Expr>,
-    ) -> (Body, BodySourceMap) {
-        lower::lower(db, def, expander, params, body)
-    }
-}
-
-impl Index<ExprId> for Body {
-    type Output = Expr;
-
-    fn index(&self, expr: ExprId) -> &Expr {
-        &self.exprs[expr]
-    }
-}
-
-impl Index<PatId> for Body {
-    type Output = Pat;
-
-    fn index(&self, pat: PatId) -> &Pat {
-        &self.pats[pat]
-    }
-}
-
-impl BodySourceMap {
-    pub fn expr_syntax(&self, expr: ExprId) -> Result<ExprSource, SyntheticSyntax> {
-        self.expr_map_back[expr].clone()
-    }
-
-    pub fn node_expr(&self, node: InFile<&ast::Expr>) -> Option<ExprId> {
-        let src = node.map(|it| AstPtr::new(it));
-        self.expr_map.get(&src).cloned()
-    }
-
-    pub fn node_macro_file(&self, node: InFile<&ast::MacroCall>) -> Option<HirFileId> {
-        let src = node.map(|it| AstPtr::new(it));
-        self.expansions.get(&src).cloned()
-    }
-
-    pub fn pat_syntax(&self, pat: PatId) -> Result<PatSource, SyntheticSyntax> {
-        self.pat_map_back[pat].clone()
-    }
-
-    pub fn node_pat(&self, node: InFile<&ast::Pat>) -> Option<PatId> {
-        let src = node.map(|it| Either::Left(AstPtr::new(it)));
-        self.pat_map.get(&src).cloned()
-    }
-
-    pub fn node_self_param(&self, node: InFile<&ast::SelfParam>) -> Option<PatId> {
-        let src = node.map(|it| Either::Right(AstPtr::new(it)));
-        self.pat_map.get(&src).cloned()
-    }
-
-    pub fn field_syntax(&self, expr: ExprId, field: usize) -> InFile<AstPtr<ast::RecordExprField>> {
-        self.field_map[&(expr, field)].clone()
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use base_db::{fixture::WithFixture, SourceDatabase};
-    use test_utils::mark;
-
-    use crate::ModuleDefId;
-
-    use super::*;
-
-    fn lower(ra_fixture: &str) -> Arc<Body> {
-        let (db, file_id) = crate::test_db::TestDB::with_single_file(ra_fixture);
-
-        let krate = db.crate_graph().iter().next().unwrap();
-        let def_map = db.crate_def_map(krate);
-        let module = def_map.modules_for_file(file_id).next().unwrap();
-        let module = &def_map[module];
-        let fn_def = match module.scope.declarations().next().unwrap() {
-            ModuleDefId::FunctionId(it) => it,
-            _ => panic!(),
-        };
-
-        db.body(fn_def.into())
-    }
-
-    #[test]
-    fn your_stack_belongs_to_me() {
-        mark::check!(your_stack_belongs_to_me);
-        lower(
-            "
-macro_rules! n_nuple {
-    ($e:tt) => ();
-    ($($rest:tt)*) => {{
-        (n_nuple!($($rest)*)None,)
-    }};
-}
-fn main() { n_nuple!(1,2,3); }
-",
-        );
-    }
-}