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Merge #2225

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2225: Reduce duplication between uncertain floats & ints r=matklad a=matklad



Co-authored-by: Aleksey Kladov <aleksey.kladov@gmail.com>
This commit is contained in:
bors[bot] 2019-11-13 06:57:13 +00:00 committed by GitHub
commit 6ca0d79cff
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7 changed files with 55 additions and 70 deletions
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4
crates/ra_hir/src/lib.rs
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@ -77,9 +77,7 @@ pub use crate::{
source_binder::{PathResolution, ScopeEntryWithSyntax, SourceAnalyzer},
ty::{
display::HirDisplay,
primitive::{
FloatBitness, FloatTy, IntBitness, IntTy, Signedness, UncertainFloatTy, UncertainIntTy,
},
primitive::{FloatBitness, FloatTy, IntBitness, IntTy, Signedness, Uncertain},
ApplicationTy, CallableDef, Substs, TraitRef, Ty, TypeCtor, TypeWalk,
},
};

6
crates/ra_hir/src/ty.rs
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@ -21,7 +21,7 @@ use crate::{
expr::ExprId,
generics::{GenericParams, HasGenericParams},
util::make_mut_slice,
Adt, Crate, DefWithBody, Mutability, Name, Trait, TypeAlias,
Adt, Crate, DefWithBody, FloatTy, IntTy, Mutability, Name, Trait, TypeAlias, Uncertain,
};
use display::{HirDisplay, HirFormatter};
@ -47,10 +47,10 @@ pub enum TypeCtor {
Char,
/// A primitive integer type. For example, `i32`.
Int(primitive::UncertainIntTy),
Int(Uncertain<IntTy>),
/// A primitive floating-point type. For example, `f64`.
Float(primitive::UncertainFloatTy),
Float(Uncertain<FloatTy>),
/// Structures, enumerations and unions.
Adt(Adt),

28
crates/ra_hir/src/ty/infer.rs
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@ -31,10 +31,10 @@ use ra_prof::profile;
use test_utils::tested_by;
use super::{
lower, primitive,
lower,
traits::{Guidance, Obligation, ProjectionPredicate, Solution},
ApplicationTy, InEnvironment, ProjectionTy, Substs, TraitEnvironment, TraitRef, Ty, TypableDef,
TypeCtor, TypeWalk,
TypeCtor, TypeWalk, Uncertain,
};
use crate::{
adt::VariantDef,
@ -43,7 +43,7 @@ use crate::{
expr::{BindingAnnotation, Body, ExprId, PatId},
resolve::{Resolver, TypeNs},
ty::infer::diagnostics::InferenceDiagnostic,
Adt, AssocItem, ConstData, DefWithBody, FnData, Function, Path, StructField,
Adt, AssocItem, ConstData, DefWithBody, FloatTy, FnData, Function, IntTy, Path, StructField,
};
macro_rules! ty_app {
@ -358,14 +358,12 @@ impl<'a, D: HirDatabase> InferenceContext<'a, D> {
fn insert_type_vars_shallow(&mut self, ty: Ty) -> Ty {
match ty {
Ty::Unknown => self.new_type_var(),
Ty::Apply(ApplicationTy {
ctor: TypeCtor::Int(primitive::UncertainIntTy::Unknown),
..
}) => self.new_integer_var(),
Ty::Apply(ApplicationTy {
ctor: TypeCtor::Float(primitive::UncertainFloatTy::Unknown),
..
}) => self.new_float_var(),
Ty::Apply(ApplicationTy { ctor: TypeCtor::Int(Uncertain::Unknown), .. }) => {
self.new_integer_var()
}
Ty::Apply(ApplicationTy { ctor: TypeCtor::Float(Uncertain::Unknown), .. }) => {
self.new_float_var()
}
_ => ty,
}
}
@ -684,12 +682,8 @@ impl InferTy {
fn fallback_value(self) -> Ty {
match self {
InferTy::TypeVar(..) => Ty::Unknown,
InferTy::IntVar(..) => {
Ty::simple(TypeCtor::Int(primitive::UncertainIntTy::Known(primitive::IntTy::i32())))
}
InferTy::FloatVar(..) => Ty::simple(TypeCtor::Float(
primitive::UncertainFloatTy::Known(primitive::FloatTy::f64()),
)),
InferTy::IntVar(..) => Ty::simple(TypeCtor::Int(Uncertain::Known(IntTy::i32()))),
InferTy::FloatVar(..) => Ty::simple(TypeCtor::Float(Uncertain::Known(FloatTy::f64()))),
InferTy::MaybeNeverTypeVar(..) => Ty::simple(TypeCtor::Never),
}
}

30
crates/ra_hir/src/ty/infer/expr.rs
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@ -3,7 +3,10 @@
use std::iter::{repeat, repeat_with};
use std::sync::Arc;
use hir_def::path::{GenericArg, GenericArgs};
use hir_def::{
builtin_type::Signedness,
path::{GenericArg, GenericArgs},
};
use hir_expand::name;
use super::{BindingMode, Expectation, InferenceContext, InferenceDiagnostic, TypeMismatch};
@ -12,8 +15,9 @@ use crate::{
expr::{self, Array, BinaryOp, Expr, ExprId, Literal, Statement, UnaryOp},
generics::{GenericParams, HasGenericParams},
ty::{
autoderef, method_resolution, op, primitive, CallableDef, InferTy, Mutability, Namespace,
autoderef, method_resolution, op, CallableDef, InferTy, IntTy, Mutability, Namespace,
Obligation, ProjectionPredicate, ProjectionTy, Substs, TraitRef, Ty, TypeCtor, TypeWalk,
Uncertain,
},
Adt, Name,
};
@ -337,13 +341,11 @@ impl<'a, D: HirDatabase> InferenceContext<'a, D> {
UnaryOp::Neg => {
match &inner_ty {
Ty::Apply(a_ty) => match a_ty.ctor {
TypeCtor::Int(primitive::UncertainIntTy::Unknown)
| TypeCtor::Int(primitive::UncertainIntTy::Known(
primitive::IntTy {
signedness: primitive::Signedness::Signed,
..
},
))
TypeCtor::Int(Uncertain::Unknown)
| TypeCtor::Int(Uncertain::Known(IntTy {
signedness: Signedness::Signed,
..
}))
| TypeCtor::Float(..) => inner_ty,
_ => Ty::Unknown,
},
@ -428,9 +430,9 @@ impl<'a, D: HirDatabase> InferenceContext<'a, D> {
);
self.infer_expr(
*repeat,
&Expectation::has_type(Ty::simple(TypeCtor::Int(
primitive::UncertainIntTy::Known(primitive::IntTy::usize()),
))),
&Expectation::has_type(Ty::simple(TypeCtor::Int(Uncertain::Known(
IntTy::usize(),
)))),
);
}
}
@ -443,9 +445,7 @@ impl<'a, D: HirDatabase> InferenceContext<'a, D> {
Ty::apply_one(TypeCtor::Ref(Mutability::Shared), Ty::simple(TypeCtor::Str))
}
Literal::ByteString(..) => {
let byte_type = Ty::simple(TypeCtor::Int(primitive::UncertainIntTy::Known(
primitive::IntTy::u8(),
)));
let byte_type = Ty::simple(TypeCtor::Int(Uncertain::Known(IntTy::u8())));
let slice_type = Ty::apply_one(TypeCtor::Slice, byte_type);
Ty::apply_one(TypeCtor::Ref(Mutability::Shared), slice_type)
}

14
crates/ra_hir/src/ty/lower.rs
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@ -25,7 +25,7 @@ use crate::{
generics::{GenericDef, WherePredicate},
resolve::{Resolver, TypeNs},
ty::{
primitive::{FloatTy, IntTy, UncertainFloatTy, UncertainIntTy},
primitive::{FloatTy, IntTy, Uncertain},
Adt,
},
util::make_mut_slice,
@ -674,20 +674,20 @@ impl From<BuiltinFloat> for FloatTy {
}
}
impl From<Option<BuiltinInt>> for UncertainIntTy {
impl From<Option<BuiltinInt>> for Uncertain<IntTy> {
fn from(t: Option<BuiltinInt>) -> Self {
match t {
None => UncertainIntTy::Unknown,
Some(t) => UncertainIntTy::Known(t.into()),
None => Uncertain::Unknown,
Some(t) => Uncertain::Known(t.into()),
}
}
}
impl From<Option<BuiltinFloat>> for UncertainFloatTy {
impl From<Option<BuiltinFloat>> for Uncertain<FloatTy> {
fn from(t: Option<BuiltinFloat>) -> Self {
match t {
None => UncertainFloatTy::Unknown,
Some(t) => UncertainFloatTy::Known(t.into()),
None => Uncertain::Unknown,
Some(t) => Uncertain::Known(t.into()),
}
}
}

11
crates/ra_hir/src/ty/method_resolution.rs
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@ -8,16 +8,17 @@ use arrayvec::ArrayVec;
use hir_def::CrateModuleId;
use rustc_hash::FxHashMap;
use super::{autoderef, lower, Canonical, InEnvironment, TraitEnvironment, TraitRef};
use crate::{
db::HirDatabase,
impl_block::{ImplBlock, ImplId},
resolve::Resolver,
ty::primitive::{FloatBitness, UncertainFloatTy, UncertainIntTy},
ty::primitive::{FloatBitness, Uncertain},
ty::{Ty, TypeCtor},
AssocItem, Crate, Function, Module, Mutability, Name, Trait,
};
use super::{autoderef, lower, Canonical, InEnvironment, TraitEnvironment, TraitRef};
/// This is used as a key for indexing impls.
#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
pub enum TyFingerprint {
@ -140,14 +141,12 @@ fn def_crates(db: &impl HirDatabase, cur_crate: Crate, ty: &Ty) -> Option<ArrayV
TypeCtor::Adt(def_id) => Some(std::iter::once(def_id.krate(db)?).collect()),
TypeCtor::Bool => lang_item_crate!(db, cur_crate, "bool"),
TypeCtor::Char => lang_item_crate!(db, cur_crate, "char"),
TypeCtor::Float(UncertainFloatTy::Known(f)) => match f.bitness {
TypeCtor::Float(Uncertain::Known(f)) => match f.bitness {
// There are two lang items: one in libcore (fXX) and one in libstd (fXX_runtime)
FloatBitness::X32 => lang_item_crate!(db, cur_crate, "f32", "f32_runtime"),
FloatBitness::X64 => lang_item_crate!(db, cur_crate, "f64", "f64_runtime"),
},
TypeCtor::Int(UncertainIntTy::Known(i)) => {
lang_item_crate!(db, cur_crate, i.ty_to_string())
}
TypeCtor::Int(Uncertain::Known(i)) => lang_item_crate!(db, cur_crate, i.ty_to_string()),
TypeCtor::Str => lang_item_crate!(db, cur_crate, "str_alloc", "str"),
TypeCtor::Slice => lang_item_crate!(db, cur_crate, "slice_alloc", "slice"),
TypeCtor::RawPtr(Mutability::Shared) => lang_item_crate!(db, cur_crate, "const_ptr"),

32
crates/ra_hir/src/ty/primitive.rs
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@ -4,44 +4,38 @@ use std::fmt;
pub use hir_def::builtin_type::{FloatBitness, IntBitness, Signedness};
#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
pub enum UncertainIntTy {
#[derive(Clone, Copy, Eq, PartialEq, Hash, Debug)]
pub enum Uncertain<T> {
Unknown,
Known(IntTy),
Known(T),
}
impl From<IntTy> for UncertainIntTy {
impl From<IntTy> for Uncertain<IntTy> {
fn from(ty: IntTy) -> Self {
UncertainIntTy::Known(ty)
Uncertain::Known(ty)
}
}
impl fmt::Display for UncertainIntTy {
impl fmt::Display for Uncertain<IntTy> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
UncertainIntTy::Unknown => write!(f, "{{integer}}"),
UncertainIntTy::Known(ty) => write!(f, "{}", ty),
Uncertain::Unknown => write!(f, "{{integer}}"),
Uncertain::Known(ty) => write!(f, "{}", ty),
}
}
}
#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
pub enum UncertainFloatTy {
Unknown,
Known(FloatTy),
}
impl From<FloatTy> for UncertainFloatTy {
impl From<FloatTy> for Uncertain<FloatTy> {
fn from(ty: FloatTy) -> Self {
UncertainFloatTy::Known(ty)
Uncertain::Known(ty)
}
}
impl fmt::Display for UncertainFloatTy {
impl fmt::Display for Uncertain<FloatTy> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
UncertainFloatTy::Unknown => write!(f, "{{float}}"),
UncertainFloatTy::Known(ty) => write!(f, "{}", ty),
Uncertain::Unknown => write!(f, "{{float}}"),
Uncertain::Known(ty) => write!(f, "{}", ty),
}
}
}