1  // Copyright (C) 2019-2025 ADnet Contributors
 2  // This file is part of the ADL library.
 3  
 4  // The ADL library is free software: you can redistribute it and/or modify
 5  // it under the terms of the GNU General Public License as published by
 6  // the Free Software Foundation, either version 3 of the License, or
 7  // (at your option) any later version.
 8  
 9  // The ADL library is distributed in the hope that it will be useful,
10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  // GNU General Public License for more details.
13  
14  // You should have received a copy of the GNU General Public License
15  // along with the ADL library. If not, see <https://www.gnu.org/licenses/>.
16  
17  use adl_span::{Symbol, sym};
18  
19  use serde::{Deserialize, Serialize};
20  use std::fmt;
21  
22  /// Explicit integer type.
23  #[derive(Copy, Clone, Debug, PartialEq, Eq, Ord, PartialOrd, Hash, Serialize, Deserialize)]
24  pub enum IntegerType {
25      U8,
26      U16,
27      U32,
28      U64,
29      U128,
30  
31      I8,
32      I16,
33      I32,
34      I64,
35      I128,
36  }
37  
38  impl IntegerType {
39      /// Is the integer type a signed one?
40      pub fn is_signed(&self) -> bool {
41          use IntegerType::*;
42          matches!(self, I8 | I16 | I32 | I64 | I128)
43      }
44  
45      /// Returns the symbol for the integer type.
46      pub fn symbol(self) -> Symbol {
47          match self {
48              Self::I8 => sym::i8,
49              Self::I16 => sym::i16,
50              Self::I32 => sym::i32,
51              Self::I64 => sym::i64,
52              Self::I128 => sym::i128,
53              Self::U8 => sym::u8,
54              Self::U16 => sym::u16,
55              Self::U32 => sym::u32,
56              Self::U64 => sym::u64,
57              Self::U128 => sym::u128,
58          }
59      }
60  }
61  
62  impl fmt::Display for IntegerType {
63      fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
64          match *self {
65              IntegerType::U8 => write!(f, "u8"),
66              IntegerType::U16 => write!(f, "u16"),
67              IntegerType::U32 => write!(f, "u32"),
68              IntegerType::U64 => write!(f, "u64"),
69              IntegerType::U128 => write!(f, "u128"),
70  
71              IntegerType::I8 => write!(f, "i8"),
72              IntegerType::I16 => write!(f, "i16"),
73              IntegerType::I32 => write!(f, "i32"),
74              IntegerType::I64 => write!(f, "i64"),
75              IntegerType::I128 => write!(f, "i128"),
76          }
77      }
78  }