rishi/scryer-prolog
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shorten, and increase readability

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This commit is contained in:
Markus Triska
2020-08-05 20:31:56 +02:00
parent 1c23336cff
commit 2d3f1e51ec
2 changed files with 9 additions and 31 deletions
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34
src/machine/system_calls.rs
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@@ -5713,10 +5713,7 @@ impl MachineState {
let result = scalarmult(&scalar, &point).unwrap();
let mut string = String::new();
for c in result[..].iter() {
string.push(*c as char);
}
let string = String::from_iter(result[..].iter().map(|b| *b as char));
let cstr = self.heap.put_complete_string(&string);
self.unify(self[temp_v!(3)], cstr);
}
@@ -5761,32 +5758,18 @@ impl MachineState {
env::remove_var(key);
}
&SystemClauseType::CharsBase64 => {
let mut options = vec![];
for i in 3..5 {
match self.store(self.deref(self[temp_v!(i)])) {
Addr::Con(h) if self.heap.atom_at(h) => {
if let HeapCellValue::Atom(ref atom, _) = &self.heap[h] {
options.push(atom.as_str());
} else {
unreachable!()
}
}
_ => {
unreachable!()
}
};
}
let padding = self.atom_argument_to_string(3);
let charset = self.atom_argument_to_string(4);
let config =
if options[0] == "true" {
if options[1] == "standard" {
if padding == "true" {
if charset == "standard" {
base64::STANDARD
} else {
base64::URL_SAFE
}
} else {
if options[1] == "standard" {
if charset == "standard" {
base64::STANDARD_NO_PAD
} else {
base64::URL_SAFE_NO_PAD
@@ -5799,10 +5782,7 @@ impl MachineState {
match bytes {
Ok(bs) => {
let mut string = String::new();
for c in bs {
string.push(c as char);
}
let string = String::from_iter(bs.iter().map(|b| *b as char));
let cstr = self.heap.put_complete_string(&string);
self.unify(self[temp_v!(1)], cstr);
}