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Refactor: Use helper for type conversions instead of doing everything three times

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This commit is contained in:
Matthias Beyer 2016-04-16 16:09:34 +02:00
parent 915e711c3e
commit 59071c9948
1 changed files with 14 additions and 37 deletions
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51
libimaglink/src/internal.rs
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@ -45,25 +45,14 @@ impl InternalLinker for Entry {
return Err(e);
}
let link = link.get_location().clone();
let link = link.to_str();
if link.is_none() {
return Err(LinkError::new(LinkErrorKind::InternalConversionError, None));
}
let link = link.unwrap();
new_links.push(String::from(link));
new_links.push(link);
}
let new_links = new_links
.into_iter()
.unique()
.map(|s| Value::String(s))
.sorted_by(|a, b| {
match (a, b) {
(&Value::String(ref a), &Value::String(ref b)) => Ord::cmp(a, b),
_ => unreachable!()
}
});
let new_links = links_into_values(new_links);
if new_links.iter().any(|o| o.is_none()) {
return Err(LinkError::new(LinkErrorKind::InternalConversionError, None));
}
let new_links = new_links.into_iter().map(|o| o.unwrap()).collect();
process_rw_result(self.get_header_mut().set("imag.links", Value::Array(new_links)))
}
@ -100,8 +89,8 @@ impl InternalLinker for Entry {
}
fn rewrite_links(header: &mut EntryHeader, links: Vec<StoreId>) -> Result<()> {
let links : Vec<Option<Value>> = links
fn links_into_values(links: Vec<StoreId>) -> Vec<Option<Value>> {
links
.into_iter()
.map(|s| s.to_str().map(|s| String::from(s)))
.unique()
@ -112,7 +101,11 @@ fn rewrite_links(header: &mut EntryHeader, links: Vec<StoreId>) -> Result<()> {
(&None, _) | (_, &None) => Ordering::Equal,
_ => unreachable!()
}
});
})
}
fn rewrite_links(header: &mut EntryHeader, links: Vec<StoreId>) -> Result<()> {
let links = links_into_values(links);
if links.iter().any(|o| o.is_none()) {
// if any type convert failed we fail as well
@ -131,23 +124,7 @@ fn add_foreign_link(target: &mut Entry, from: StoreId) -> Result<()> {
target.get_internal_links()
.and_then(|mut links| {
links.push(from);
let links : Vec<Option<Value>> = links
.into_iter()
.map(|s| {
match s.to_str() {
Some(s) => Some(String::from(s)),
_ => None
}
})
.unique()
.map(|elem| elem.map(|s| Value::String(s)))
.sorted_by(|a, b| {
match (a, b) {
(&Some(Value::String(ref a)), &Some(Value::String(ref b))) => Ord::cmp(a, b),
(&None, _) | (_, &None) => Ordering::Equal,
_ => unreachable!()
}
});
let links = links_into_values(links);
if links.iter().any(|o| o.is_none()) {
Err(LinkError::new(LinkErrorKind::InternalConversionError, None))
} else {