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use std::hash::{DefaultHasher, Hash, Hasher};
use matrix::{vm::Vm, value::Value, unpack_args, Result, unpack_varargs};
use matrix_macros::native_func;
use crate::{VmArgs, error};
fn to_radix(r: i64, mut n: i64) -> String {
let mut result = String::new();
let mut idx = 0;
if n == 0 {
result.push('0');
return result
} else if n < 0 {
n = -n;
idx = 1;
result.push('-');
}
while n != 0 {
let c = std::char::from_digit((n % r) as u32, r as u32).unwrap();
result.insert(idx, c);
n /= r;
}
result
}
#[native_func(1)]
fn bin(_: VmArgs, args: Vec<Value>) -> Result<Value> {
let [value] = unpack_args!(args);
match value {
Value::Int(n) => Ok(Value::String(to_radix(2, n).into())),
_ => error!("bin requires a integer agument")
}
}
#[native_func(1)]
fn sex(_: VmArgs, args: Vec<Value>) -> Result<Value> {
let [value] = unpack_args!(args);
match value {
Value::Int(n) => Ok(Value::String(to_radix(6, n).into())),
_ => error!("sex requires a integer agument")
}
}
#[native_func(1)]
fn oct(_: VmArgs, args: Vec<Value>) -> Result<Value> {
let [value] = unpack_args!(args);
match value {
Value::Int(n) => Ok(Value::String(to_radix(8, n).into())),
_ => error!("oct requires a integer agument")
}
}
#[native_func(1)]
fn hex(_: VmArgs, args: Vec<Value>) -> Result<Value> {
let [value] = unpack_args!(args);
match value {
Value::Int(n) => Ok(Value::String(to_radix(16, n).into())),
_ => error!("hex requires a integer agument")
}
}
#[native_func(2)]
fn radix(_: VmArgs, args: Vec<Value>) -> Result<Value> {
let [radix, value] = unpack_args!(args);
match (radix, value) {
(Value::Int(r), Value::Int(n)) => Ok(Value::String(to_radix(r, n).into())),
_ => error!("radix requires two integer aguments")
}
}
#[native_func(1..)]
fn append(_: VmArgs, args: Vec<Value>) -> Result<Value> {
let ([list], args) = unpack_varargs!(args);
let Value::List(mut list) = list else {
return error!("append requires a list")
};
for arg in args {
list.push(arg);
};
Ok(Value::List(list))
}
#[native_func(2)]
fn push(_: VmArgs, args: Vec<Value>) -> Result<Value> {
let [list, value] = unpack_args!(args);
let Value::List(mut list) = list else {
return error!("push requires a list")
};
list.push(value);
Ok(Value::List(list))
}
#[native_func(1)]
fn pop(_: VmArgs, args: Vec<Value>) -> Result<Value> {
let [list] = unpack_args!(args);
let Value::List(mut list) = list else {
return error!("pop requires a list")
};
match list.pop() {
Some(v) => Ok(v),
None => Ok(Value::Nil)
}
}
#[native_func(2)]
fn remove(_: VmArgs, args: Vec<Value>) -> Result<Value> {
let [list, index] = unpack_args!(args);
let Value::List(mut list) = list else {
return error!("remove requires a list")
};
let Value::Int(i) = index else {
return error!("remove reuqires a int index");
};
if i < 0 || i as usize >= list.len() {
Ok(Value::Nil)
} else {
Ok(list.remove(i as usize))
}
}
#[native_func(1)]
fn hash(_: VmArgs, args: Vec<Value>) -> Result<Value> {
let [value] = unpack_args!(args);
if let Err(e) = value.can_hash() {
return Err(e)
};
let mut hasher = DefaultHasher::new();
value.hash(&mut hasher);
let fin = hasher.finish();
Ok(Value::Int(fin as u32 as i64))
}
#[native_func(1)]
fn ord(_: VmArgs, args: Vec<Value>) -> Result<Value> {
let [value] = unpack_args!(args);
let Value::String(str) = value else {
return error!("ord requires a 1 length string")
};
if str.len() != 1 {
return error!("ord requires a 1 length string")
}
let char = str.chars().next().unwrap();
Ok(Value::Int(char as i64))
}
#[native_func(1)]
fn chr(_: VmArgs, args: Vec<Value>) -> Result<Value> {
let [value] = unpack_args!(args);
let Value::Int(i) = value else {
return error!("chr requires an int")
};
match char::from_u32(i as u32) {
Some(c) => Ok(Value::String(String::from(c).into())),
None => error!("unable to get char from: {}", i as u32)
}
}
#[native_func(1)]
fn str(_: VmArgs, args: Vec<Value>) -> Result<Value> {
let [value] = unpack_args!(args);
Ok(Value::String(format!("{value}").into()))
}
pub fn load(vm: &mut Vm) {
vm.load_global_fn(bin(), "bin");
vm.load_global_fn(sex(), "sex");
vm.load_global_fn(oct(), "oct");
vm.load_global_fn(hex(), "hex");
vm.load_global_fn(radix(), "radix");
vm.load_global_fn(str(), "str");
vm.load_global_fn(append(), "append");
vm.load_global_fn(push(), "push");
vm.load_global_fn(pop(), "pop");
vm.load_global_fn(remove(), "remove");
vm.load_global_fn(hash(), "hash");
vm.load_global_fn(ord(), "ord");
vm.load_global_fn(chr(), "chr");
}
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