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Add stepping to ranges & enable reverse ranges

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Follows the following syntax: <start>..<next-value>..<end>
This commit is contained in:
Jakub Žádník
2021-09-11 14:13:04 +03:00
parent 2d3a56f0d3
commit 4749776984
8 changed files with 207 additions and 102 deletions
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39
crates/nu-parser/tests/test_parser.rs
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@ -164,6 +164,7 @@ mod range {
Expression {
expr: Expr::Range(
Some(_),
None,
Some(_),
RangeOperator {
inclusion: RangeInclusion::Inclusive,
@ -195,6 +196,7 @@ mod range {
Expression {
expr: Expr::Range(
Some(_),
None,
Some(_),
RangeOperator {
inclusion: RangeInclusion::RightExclusive,
@ -209,6 +211,38 @@ mod range {
}
}
#[test]
fn parse_reverse_range() {
let engine_state = EngineState::new();
let mut working_set = StateWorkingSet::new(&engine_state);
let (block, err) = parse(&mut working_set, None, b"10..0", true);
assert!(err.is_none());
assert!(block.len() == 1);
match &block[0] {
Statement::Pipeline(Pipeline { expressions }) => {
assert!(expressions.len() == 1);
assert!(matches!(
expressions[0],
Expression {
expr: Expr::Range(
Some(_),
None,
Some(_),
RangeOperator {
inclusion: RangeInclusion::Inclusive,
..
}
),
..
}
))
}
_ => panic!("No match"),
}
}
#[test]
fn parse_subexpression_range() {
let engine_state = EngineState::new();
@ -226,6 +260,7 @@ mod range {
Expression {
expr: Expr::Range(
Some(_),
None,
Some(_),
RangeOperator {
inclusion: RangeInclusion::RightExclusive,
@ -257,6 +292,7 @@ mod range {
Expression {
expr: Expr::Range(
Some(_),
None,
Some(_),
RangeOperator {
inclusion: RangeInclusion::Inclusive,
@ -288,6 +324,7 @@ mod range {
Expression {
expr: Expr::Range(
Some(_),
None,
Some(_),
RangeOperator {
inclusion: RangeInclusion::RightExclusive,
@ -320,6 +357,7 @@ mod range {
expr: Expr::Range(
Some(_),
None,
None,
RangeOperator {
inclusion: RangeInclusion::Inclusive,
..
@ -350,6 +388,7 @@ mod range {
Expression {
expr: Expr::Range(
Some(_),
None,
Some(_),
RangeOperator {
inclusion: RangeInclusion::Inclusive,