1  // Copyright (c) 2019-2025 Alpha-Delta Network Inc.
 2  // This file is part of the deltavm library.
 3  
 4  // Licensed under the Apache License, Version 2.0 (the "License");
 5  // you may not use this file except in compliance with the License.
 6  // You may obtain a copy of the License at:
 7  
 8  // http://www.apache.org/licenses/LICENSE-2.0
 9  
10  // Unless required by applicable law or agreed to in writing, software
11  // distributed under the License is distributed on an "AS IS" BASIS,
12  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  // See the License for the specific language governing permissions and
14  // limitations under the License.
15  
16  use super::*;
17  use deltavm_circuit_types::U8;
18  
19  impl<A: Alpha> ToBits for Future<A> {
20      type Boolean = Boolean<A>;
21  
22      /// Returns the circuit future as a list of **little-endian** bits.
23      #[inline]
24      fn write_bits_le(&self, vec: &mut Vec<Boolean<A>>) {
25          // Write the bits for the program ID.
26          let program_id_bits = self.program_id.to_bits_le();
27          U16::constant(console::U16::new(program_id_bits.len() as u16)).write_bits_le(vec);
28          vec.extend_from_slice(&program_id_bits);
29  
30          // Write the bits for the function name.
31          let function_name_bits = self.function_name.to_bits_le();
32          U16::constant(console::U16::new(function_name_bits.len() as u16)).write_bits_le(vec);
33          vec.extend_from_slice(&function_name_bits);
34  
35          // Write the number of arguments.
36          U8::constant(console::U8::new(self.arguments.len() as u8)).write_bits_le(vec);
37  
38          // Write the arguments.
39          for argument in &self.arguments {
40              let argument_bits = argument.to_bits_le();
41              // Write the size of the argument.
42              U16::constant(console::U16::new(argument_bits.len() as u16)).write_bits_le(vec);
43              // Write the argument.
44              vec.extend_from_slice(&argument_bits);
45          }
46      }
47  
48      /// Returns the circuit future as a list of **big-endian** bits.
49      #[inline]
50      fn write_bits_be(&self, vec: &mut Vec<Boolean<A>>) {
51          // Write the bits for the program ID.
52          let program_id_bits = self.program_id.to_bits_be();
53          U16::constant(console::U16::new(program_id_bits.len() as u16)).write_bits_be(vec);
54          vec.extend_from_slice(&program_id_bits);
55  
56          // Write the bits for the function name.
57          let function_name_bits = self.function_name.to_bits_be();
58          U16::constant(console::U16::new(function_name_bits.len() as u16)).write_bits_be(vec);
59          vec.extend_from_slice(&function_name_bits);
60  
61          // Write the number of arguments.
62          U8::constant(console::U8::new(self.arguments.len() as u8)).write_bits_be(vec);
63  
64          // Write the arguments.
65          for argument in &self.arguments {
66              let argument_bits = argument.to_bits_be();
67              // Write the size of the argument.
68              U16::constant(console::U16::new(argument_bits.len() as u16)).write_bits_be(vec);
69              // Write the argument.
70              vec.extend_from_slice(&argument_bits);
71          }
72      }
73  }