aa4bb78f66
A Vector can now be converted to and from bytes of data. I'm not entirely sure that the structure bytes do not have to be handled for endianess, but the underlying basic types are correctly handled. Tests and and example have also be created. The tests lib file was split into a converter test file and a transmutable test file.
87 lines
2.0 KiB
Rust
87 lines
2.0 KiB
Rust
#![feature(convert)]
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extern crate alchemy;
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extern crate sigils;
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use alchemy::U64_BYTES;
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use alchemy::{Endianess, Transmutable};
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use sigils::vector::Vector2;
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/// The size of 2 u64 whole numbers.
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/// This would be different if the contained type
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/// was something different, like an i16 or f32.
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const SIZE_OF_VECTOR_2: usize = U64_BYTES * 2;
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/// This just help pretty up the printing of an array of bytes.
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fn stringify_array(buffer: &[u8]) -> String
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{
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let mut result: String;
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let mut count: usize;
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// Create a new string that starts with just
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// the array opening bracket.
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result = String::new();
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result.push_str("[");
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// Loop through the buffer keeping track
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// of our place in it.
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count = 0usize;
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for byte in buffer
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{
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// Handle priting the last value differently.
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if count >= buffer.len() - 1
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{
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result.push_str(byte.to_string().as_str());
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}
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else
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{
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result.push_str(byte.to_string().as_str());
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result.push_str(", ");
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}
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// Mark that we are going to look at
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// the next byte in the array.
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count += 1;
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}
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// Add the array closing bracket and
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// return the new String.
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result.push_str("]");
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result
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}
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pub fn main()
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{
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let vec: Vector2<u64>;
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let final_vec: Vector2<u64>;
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let endianess: Endianess;
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let mut buffer: [u8; SIZE_OF_VECTOR_2];
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// Initialize the variables.
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vec = Vector2::<u64>::new(629u64, 1985u64);
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buffer = [0u8; SIZE_OF_VECTOR_2];
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endianess = Endianess::PLATFORM;
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println!("Transmuting a Vector2:");
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println!("Converting the value [{}, {}] into and out of an array of bytes.",
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vec.x, vec.y);
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println!("Buffer starts as: {}", stringify_array(&buffer));
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// Convert the Vector2 into an array of bytes.
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vec.to_bytes(&mut buffer, endianess);
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println!("Buffer contains: {}", stringify_array(&buffer));
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// Convert the array of bytes into a Vector2.
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final_vec = Vector2::from_bytes(&buffer, endianess);
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println!("The buffer converts back to: [{}, {}]", final_vec.x, final_vec.y);
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}
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