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impl fmt::Display for BuiltinType

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This commit is contained in:
Aleksey Kladov 2019-11-11 11:59:19 +03:00
parent 113d7e44b7
commit 5bb92c2d1a
2 changed files with 34 additions and 6 deletions
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32
crates/ra_hir_def/src/builtin_type.rs
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@ -3,6 +3,8 @@
//! A peculiarity of built-in types is that they are always available and are
//! not associated with any particular crate.
use std::fmt;
use hir_expand::name::{self, Name};
#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
@ -61,3 +63,33 @@ impl BuiltinType {
(name::F64, BuiltinType::Float { bitness: FloatBitness::X64 }),
];
}
impl fmt::Display for BuiltinType {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let type_name = match self {
BuiltinType::Char => "char",
BuiltinType::Bool => "bool",
BuiltinType::Str => "str",
BuiltinType::Int { signedness, bitness } => match (signedness, bitness) {
(Signedness::Signed, IntBitness::Xsize) => "isize",
(Signedness::Signed, IntBitness::X8) => "i8",
(Signedness::Signed, IntBitness::X16) => "i16",
(Signedness::Signed, IntBitness::X32) => "i32",
(Signedness::Signed, IntBitness::X64) => "i64",
(Signedness::Signed, IntBitness::X128) => "i128",
(Signedness::Unsigned, IntBitness::Xsize) => "usize",
(Signedness::Unsigned, IntBitness::X8) => "u8",
(Signedness::Unsigned, IntBitness::X16) => "u16",
(Signedness::Unsigned, IntBitness::X32) => "u32",
(Signedness::Unsigned, IntBitness::X64) => "u64",
(Signedness::Unsigned, IntBitness::X128) => "u128",
},
BuiltinType::Float { bitness } => match bitness {
FloatBitness::X32 => "f32",
FloatBitness::X64 => "f64",
},
};
f.write_str(type_name)
}
}

8
crates/ra_ide_api/src/hover.rs
View File

@ -1,6 +1,6 @@
//! FIXME: write short doc here
use hir::{Adt, BuiltinType, HasSource, HirDisplay};
use hir::{Adt, HasSource, HirDisplay};
use ra_db::SourceDatabase;
use ra_syntax::{
algo::{ancestors_at_offset, find_covering_element, find_node_at_offset},
@ -132,11 +132,7 @@ pub(crate) fn hover(db: &RootDatabase, position: FilePosition) -> Option<RangeIn
hir::ModuleDef::Static(it) => res.extend(from_def_source(db, it)),
hir::ModuleDef::Trait(it) => res.extend(from_def_source(db, it)),
hir::ModuleDef::TypeAlias(it) => res.extend(from_def_source(db, it)),
hir::ModuleDef::BuiltinType(it) => {
if let Some(b) = BuiltinType::ALL.iter().find(|(_, ty)| *ty == it) {
res.extend(Some(b.0.to_string()))
}
}
hir::ModuleDef::BuiltinType(it) => res.extend(Some(it.to_string())),
},
Some(SelfType(ty)) => {
if let Some((adt_def, _)) = ty.as_adt() {