Rename ra_hir_ty -> hir_ty

1 files changed, 0 insertions, 241 deletions

diff --git a/crates/ra_hir_ty/src/infer/pat.rs b/crates/ra_hir_ty/src/infer/pat.rs
deleted file mode 100644
index 4dd4f9802..000000000
--- a/crates/ra_hir_ty/src/infer/pat.rs
+++ /dev/null
@@ -1,241 +0,0 @@
-//! Type inference for patterns.
-
-use std::iter::repeat;
-use std::sync::Arc;
-
-use hir_def::{
-    expr::{BindingAnnotation, Expr, Literal, Pat, PatId, RecordFieldPat},
-    path::Path,
-    type_ref::Mutability,
-    FieldId,
-};
-use hir_expand::name::Name;
-use test_utils::mark;
-
-use super::{BindingMode, Expectation, InferenceContext};
-use crate::{utils::variant_data, Substs, Ty, TypeCtor};
-
-impl<'a> InferenceContext<'a> {
-    fn infer_tuple_struct_pat(
-        &mut self,
-        path: Option<&Path>,
-        subpats: &[PatId],
-        expected: &Ty,
-        default_bm: BindingMode,
-        id: PatId,
-    ) -> Ty {
-        let (ty, def) = self.resolve_variant(path);
-        let var_data = def.map(|it| variant_data(self.db.upcast(), it));
-        if let Some(variant) = def {
-            self.write_variant_resolution(id.into(), variant);
-        }
-        self.unify(&ty, expected);
-
-        let substs = ty.substs().unwrap_or_else(Substs::empty);
-
-        let field_tys = def.map(|it| self.db.field_types(it)).unwrap_or_default();
-
-        for (i, &subpat) in subpats.iter().enumerate() {
-            let expected_ty = var_data
-                .as_ref()
-                .and_then(|d| d.field(&Name::new_tuple_field(i)))
-                .map_or(Ty::Unknown, |field| field_tys[field].clone().subst(&substs));
-            let expected_ty = self.normalize_associated_types_in(expected_ty);
-            self.infer_pat(subpat, &expected_ty, default_bm);
-        }
-
-        ty
-    }
-
-    fn infer_record_pat(
-        &mut self,
-        path: Option<&Path>,
-        subpats: &[RecordFieldPat],
-        expected: &Ty,
-        default_bm: BindingMode,
-        id: PatId,
-    ) -> Ty {
-        let (ty, def) = self.resolve_variant(path);
-        let var_data = def.map(|it| variant_data(self.db.upcast(), it));
-        if let Some(variant) = def {
-            self.write_variant_resolution(id.into(), variant);
-        }
-
-        self.unify(&ty, expected);
-
-        let substs = ty.substs().unwrap_or_else(Substs::empty);
-
-        let field_tys = def.map(|it| self.db.field_types(it)).unwrap_or_default();
-        for subpat in subpats {
-            let matching_field = var_data.as_ref().and_then(|it| it.field(&subpat.name));
-            if let Some(local_id) = matching_field {
-                let field_def = FieldId { parent: def.unwrap(), local_id };
-                self.result.record_field_pat_resolutions.insert(subpat.pat, field_def);
-            }
-
-            let expected_ty =
-                matching_field.map_or(Ty::Unknown, |field| field_tys[field].clone().subst(&substs));
-            let expected_ty = self.normalize_associated_types_in(expected_ty);
-            self.infer_pat(subpat.pat, &expected_ty, default_bm);
-        }
-
-        ty
-    }
-
-    pub(super) fn infer_pat(
-        &mut self,
-        pat: PatId,
-        mut expected: &Ty,
-        mut default_bm: BindingMode,
-    ) -> Ty {
-        let body = Arc::clone(&self.body); // avoid borrow checker problem
-
-        if is_non_ref_pat(&body, pat) {
-            while let Some((inner, mutability)) = expected.as_reference() {
-                expected = inner;
-                default_bm = match default_bm {
-                    BindingMode::Move => BindingMode::Ref(mutability),
-                    BindingMode::Ref(Mutability::Shared) => BindingMode::Ref(Mutability::Shared),
-                    BindingMode::Ref(Mutability::Mut) => BindingMode::Ref(mutability),
-                }
-            }
-        } else if let Pat::Ref { .. } = &body[pat] {
-            mark::hit!(match_ergonomics_ref);
-            // When you encounter a `&pat` pattern, reset to Move.
-            // This is so that `w` is by value: `let (_, &w) = &(1, &2);`
-            default_bm = BindingMode::Move;
-        }
-
-        // Lose mutability.
-        let default_bm = default_bm;
-        let expected = expected;
-
-        let ty = match &body[pat] {
-            Pat::Tuple { ref args, .. } => {
-                let expectations = match expected.as_tuple() {
-                    Some(parameters) => &*parameters.0,
-                    _ => &[],
-                };
-                let expectations_iter = expectations.iter().chain(repeat(&Ty::Unknown));
-
-                let inner_tys = args
-                    .iter()
-                    .zip(expectations_iter)
-                    .map(|(&pat, ty)| self.infer_pat(pat, ty, default_bm))
-                    .collect();
-
-                Ty::apply(TypeCtor::Tuple { cardinality: args.len() as u16 }, Substs(inner_tys))
-            }
-            Pat::Or(ref pats) => {
-                if let Some((first_pat, rest)) = pats.split_first() {
-                    let ty = self.infer_pat(*first_pat, expected, default_bm);
-                    for pat in rest {
-                        self.infer_pat(*pat, expected, default_bm);
-                    }
-                    ty
-                } else {
-                    Ty::Unknown
-                }
-            }
-            Pat::Ref { pat, mutability } => {
-                let expectation = match expected.as_reference() {
-                    Some((inner_ty, exp_mut)) => {
-                        if *mutability != exp_mut {
-                            // FIXME: emit type error?
-                        }
-                        inner_ty
-                    }
-                    _ => &Ty::Unknown,
-                };
-                let subty = self.infer_pat(*pat, expectation, default_bm);
-                Ty::apply_one(TypeCtor::Ref(*mutability), subty)
-            }
-            Pat::TupleStruct { path: p, args: subpats, .. } => {
-                self.infer_tuple_struct_pat(p.as_ref(), subpats, expected, default_bm, pat)
-            }
-            Pat::Record { path: p, args: fields, ellipsis: _ } => {
-                self.infer_record_pat(p.as_ref(), fields, expected, default_bm, pat)
-            }
-            Pat::Path(path) => {
-                // FIXME use correct resolver for the surrounding expression
-                let resolver = self.resolver.clone();
-                self.infer_path(&resolver, &path, pat.into()).unwrap_or(Ty::Unknown)
-            }
-            Pat::Bind { mode, name: _, subpat } => {
-                let mode = if mode == &BindingAnnotation::Unannotated {
-                    default_bm
-                } else {
-                    BindingMode::convert(*mode)
-                };
-                let inner_ty = if let Some(subpat) = subpat {
-                    self.infer_pat(*subpat, expected, default_bm)
-                } else {
-                    expected.clone()
-                };
-                let inner_ty = self.insert_type_vars_shallow(inner_ty);
-
-                let bound_ty = match mode {
-                    BindingMode::Ref(mutability) => {
-                        Ty::apply_one(TypeCtor::Ref(mutability), inner_ty.clone())
-                    }
-                    BindingMode::Move => inner_ty.clone(),
-                };
-                let bound_ty = self.resolve_ty_as_possible(bound_ty);
-                self.write_pat_ty(pat, bound_ty);
-                return inner_ty;
-            }
-            Pat::Slice { prefix, slice, suffix } => {
-                let (container_ty, elem_ty) = match &expected {
-                    ty_app!(TypeCtor::Array, st) => (TypeCtor::Array, st.as_single().clone()),
-                    ty_app!(TypeCtor::Slice, st) => (TypeCtor::Slice, st.as_single().clone()),
-                    _ => (TypeCtor::Slice, Ty::Unknown),
-                };
-
-                for pat_id in prefix.iter().chain(suffix) {
-                    self.infer_pat(*pat_id, &elem_ty, default_bm);
-                }
-
-                let pat_ty = Ty::apply_one(container_ty, elem_ty);
-                if let Some(slice_pat_id) = slice {
-                    self.infer_pat(*slice_pat_id, &pat_ty, default_bm);
-                }
-
-                pat_ty
-            }
-            Pat::Wild => expected.clone(),
-            Pat::Range { start, end } => {
-                let start_ty = self.infer_expr(*start, &Expectation::has_type(expected.clone()));
-                let end_ty = self.infer_expr(*end, &Expectation::has_type(start_ty));
-                end_ty
-            }
-            Pat::Lit(expr) => self.infer_expr(*expr, &Expectation::has_type(expected.clone())),
-            Pat::Missing => Ty::Unknown,
-        };
-        // use a new type variable if we got Ty::Unknown here
-        let ty = self.insert_type_vars_shallow(ty);
-        if !self.unify(&ty, expected) {
-            // FIXME record mismatch, we need to change the type of self.type_mismatches for that
-        }
-        let ty = self.resolve_ty_as_possible(ty);
-        self.write_pat_ty(pat, ty.clone());
-        ty
-    }
-}
-
-fn is_non_ref_pat(body: &hir_def::body::Body, pat: PatId) -> bool {
-    match &body[pat] {
-        Pat::Tuple { .. }
-        | Pat::TupleStruct { .. }
-        | Pat::Record { .. }
-        | Pat::Range { .. }
-        | Pat::Slice { .. } => true,
-        Pat::Or(pats) => pats.iter().all(|p| is_non_ref_pat(body, *p)),
-        // FIXME: Path/Lit might actually evaluate to ref, but inference is unimplemented.
-        Pat::Path(..) => true,
-        Pat::Lit(expr) => match body[*expr] {
-            Expr::Literal(Literal::String(..)) => false,
-            _ => true,
-        },
-        Pat::Wild | Pat::Bind { .. } | Pat::Ref { .. } | Pat::Missing => false,
-    }
-}