lib-nested/math/radix_transform/src/main.rs

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2021-04-29 01:32:59 +02:00
use {
std::sync::{Arc, RwLock},
nested::{
core::{
View,
ViewPort,
Observer,
ObserverBroadcast,
InnerViewPort,
OuterViewPort,
TypeTerm,
TypeDict
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},
sequence::{SequenceView, VecBuffer},
integer::{RadixProjection}
}
};
#[async_std::main]
async fn main() {
let mut td = TypeDict::new();
for tn in vec![
"MachineWord", "MachineInt", "MachineSlab",
"Vec", "NullTerminatedString",
"Sequence", "Ascii",
"PositionalInt", "Digit", "LittleEndian", "BigEndian",
"DiffStream", ""
] { td.add_typename(tn.into()); }
let radix_types = vec![
td.type_term_from_str("( )").unwrap(),
td.type_term_from_str("( PositionalInt 10 LittleEndian )").unwrap(),
td.type_term_from_str("( Sequence ( Digit 10 ) )").unwrap(),
td.type_term_from_str("( Sequence Ascii )").unwrap(),
td.type_term_from_str("( Sequence MachineSlab )").unwrap()
];
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nested::magic_header();
eprintln!(" Convert Radix of Positional Integer");
nested::magic_header();
let mut args = std::env::args();
args.next().expect("Arg $0 missing!");
eprintln!("\n$1: src_radix");
for t in radix_types.iter() {
eprintln!(" {}", td.type_term_to_str(t));
}
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eprintln!("\n$2: dst_radix");
for t in radix_types.iter() {
eprintln!(" {}", td.type_term_to_str(t));
}
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let src_radix_str = args.next().expect("Arg $1 required!");
let dst_radix_str = args.next().expect("Arg $2 required!");
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let src_radix = usize::from_str_radix(&src_radix_str, 10).expect("could not parse src_radix");
let dst_radix = usize::from_str_radix(&dst_radix_str, 10).expect("could not parse dst_radix");
let in_types = vec![
td.type_term_from_str("( )").unwrap(),
td.type_term_from_str("( PositionalInt )").unwrap()
.num_arg(src_radix as i64)
.arg(td.type_term_from_str("( LittleEndian )").unwrap())
.clone(),
td.type_term_from_str("( Sequence )").unwrap()
.arg(
td.type_term_from_str("( Digit )").unwrap()
.num_arg(src_radix as i64).clone()
)
.clone(),
td.type_term_from_str("( Sequence MachineInt )").unwrap(),
td.type_term_from_str("( DiffStream ( Vec MachineInt ) )").unwrap(),
];
let out_types = vec![
td.type_term_from_str("( )").unwrap(),
td.type_term_from_str("( PositionalInt )").unwrap()
.num_arg(dst_radix as i64)
.arg(td.type_term_from_str("( LittleEndian )").unwrap()).clone(),
td.type_term_from_str("( Sequence )").unwrap()
.arg(
td.type_term_from_str("( Digit )").unwrap()
.num_arg(dst_radix as i64).clone()
)
.clone(),
td.type_term_from_str("( Sequence MachineInt )").unwrap(),
td.type_term_from_str("( DiffStream ( Vec MachineInt ) )").unwrap(),
];
eprintln!("\n>0: n");
for t in in_types.iter() {
eprintln!(" {}", td.type_term_to_str(t));
}
eprintln!("\n<1: n");
for t in out_types.iter() {
eprintln!(" {}", td.type_term_to_str(t));
}
nested::magic_header();
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let src_digits_port = ViewPort::new();
let dst_digits_port = ViewPort::new();
let mut src_digits = VecBuffer::<usize>::new(src_digits_port.inner());
let proj = RadixProjection::new(
src_radix,
dst_radix,
src_digits_port.outer().to_sequence(),
dst_digits_port.inner()
);
// output dst digits
let writer = {
use std::{
fs::File,
io::{Read, Write},
os::unix::io::FromRawFd
};
dst_digits_port.outer().serialize_json(unsafe { std::fs::File::from_raw_fd(1) })
};
// start reading src digits
{
use async_std::{
fs::File,
io::{Read, Write},
os::unix::io::FromRawFd
};
src_digits.from_json(unsafe { async_std::fs::File::from_raw_fd(0) }).await;
}
}