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use let-else syntax where possible (#8886)

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# Description
this pr changes some `if-let`s to `let-else`s

# User-Facing Changes
none
This commit is contained in:
mike
2023-04-14 21:51:38 +03:00
committed by GitHub
parent 6cedc05384
commit a122e55129
7 changed files with 22 additions and 37 deletions
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8
crates/nu-parser/src/parse_keywords.rs
View File

@ -669,9 +669,7 @@ pub fn parse_alias(
return alias_pipeline;
}
let alias_name_expr = if let Some(expr) = alias_call.positional_nth(0) {
expr
} else {
let Some(alias_name_expr) = alias_call.positional_nth(0) else {
working_set.error(ParseError::UnknownState(
"Missing positional after call check".to_string(),
span(spans),
@ -932,9 +930,7 @@ pub fn parse_export_in_module(
return (garbage_pipeline(spans), vec![]);
};
let export_decl_id = if let Some(id) = working_set.find_decl(b"export", &Type::Any) {
id
} else {
let Some(export_decl_id) = working_set.find_decl(b"export", &Type::Any) else {
working_set.error(ParseError::InternalError(
"missing export command".into(),
export_span,

4
crates/nu-parser/src/parser.rs
View File

@ -2880,9 +2880,7 @@ pub fn parse_type(_working_set: &StateWorkingSet, bytes: &[u8]) -> Type {
}
pub fn parse_import_pattern(working_set: &mut StateWorkingSet, spans: &[Span]) -> Expression {
let head_span = if let Some(head_span) = spans.get(0) {
head_span
} else {
let Some(head_span) = spans.get(0) else {
working_set.error(ParseError::WrongImportPattern(span(spans)));
return garbage(span(spans));
};