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Add support for if else expressions #303

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Add support for if else expressions #303

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bcf1552
Convert `get_operator_precendence` to a trait routine
jgardn3r May 18, 2026
63503f5
Use stacks of token types in formatting context construction
jgardn3r May 18, 2026
cfd8e39
Add reference to `optimising_line_formatter::is_binary` argument
jgardn3r May 26, 2026
a3aa9b2
Improve single-token formatting context pruning
jgardn3r May 22, 2026
14ffb98
Fix syntax errors in else_if_then statement tests
jgardn3r May 25, 2026
75bc30a
Add support for ternary expressions
jgardn3r May 25, 2026
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4 changes: 4 additions & 0 deletions CHANGELOG.md
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).

## [Unreleased]

### Added

- Added support for `if else` ternary expressions

## [0.7.0] - 2025-11-11

### Added
Expand Down
4 changes: 4 additions & 0 deletions core/CHANGELOG.md
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Expand Up @@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0

## Unreleased

### Added

- Added support for `if else` ternary expressions

## 0.7.0 - 2025-11-11

### Added
Expand Down
20 changes: 20 additions & 0 deletions core/datatests/generators/logical_line_parser.rs
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Expand Up @@ -31,6 +31,7 @@ pub fn generate_test_files(root_dir: &Path) {
routine_implementations::generate(root_dir);
control_flows::generate(root_dir);
statements::generate(root_dir);
ternary::generate(root_dir);
attributes::generate(root_dir);
semicolons::generate(root_dir);
regression::generate(root_dir);
Expand Down Expand Up @@ -3258,6 +3259,25 @@ mod statements {
}
}

mod ternary {
use super::*;

pub fn generate(root_dir: &Path) {
generate_test_cases!(
root_dir,
assignment = "
_|A := if A then B else C;
",
nested = "
_|A := if if A then B else C then
if A then B else C
else
if A then B else C;
",
);
}
}

mod attributes {
use super::*;

Expand Down
144 changes: 139 additions & 5 deletions core/datatests/generators/optimising_line_formatter.rs
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Expand Up @@ -432,6 +432,31 @@ mod comments {
and FFFFFFFFFFFF then
;
",
ternary = "
A :=
if A then
B
else //
if C then D else E;
A :=
if A then
B
else //
if CCCCC then
D
else
E;
A :=
if A then
B
else //
if C then
DDDDD //
else if a then
E
else
d;
",
);
}
}
Expand Down Expand Up @@ -3013,16 +3038,16 @@ mod control_flows {
inline = "
if A then
else if AAAAAA and BBBBBB then
Bar;
Bar
else if AAAAAAAAA
and BBBBBBBBB then
Bar;
Bar
else if AAAAAAAAAA
and BBBBBBBBBB
and CCCCCCCCCC then
Bar;
Bar
else if Foo(AAA, BB, CCC) then
Bar;
Bar
else if Foo(
AAAA,
BBBBBB,
Expand Down Expand Up @@ -3052,7 +3077,7 @@ mod control_flows {
end
else if AA(A, B, C) then begin
Bar;
end;
end
else if AAA(AAA, BB, CCC) then
begin
Bar;
Expand Down Expand Up @@ -4238,6 +4263,7 @@ mod expressions {
unary::generate(root_dir);
set::generate(root_dir);
strings::generate(root_dir);
ternary::generate(root_dir);
}

mod boolean {
Expand Down Expand Up @@ -4859,6 +4885,114 @@ mod expressions {
);
}
}

mod ternary {
use super::*;

pub fn generate(root_dir: &Path) {
generate_test_cases!(
root_dir,
basic_assignment = "
A := if B then C else D;
AAAAAAAA :=
if B then C else D;
AAAAAAAA :=
if BBBBBBB then
CC
else
DD;
",
nested_must_wrap = "
// wrap_column=41 |
// A := if B then if C then D else E else F;
A :=
if B then
if C then D else E
else
F;
",
nested = "
A :=
if B then
if CCCCC then D else E
else
F;
A :=
if B then
if CCCCCC then
D
else
E
else
F;
A :=
if BBBBBBB + BBBBBBBB then
if CCCCCC + CCCCC then
DDDDDDDDDD + DDDDD
else
EEEEEEEEE + EEEEEE
else
FFFFFFFF + FFFFFFFFFF;
A :=
if BBBBBBBB
+ BBBBBBBB then
if CCCCC + CCCCCC then
DDDDDDDDDD + DDDDD
else
EEEEEEEEE + EEEEEE
else
FFFFFFFF + FFFFFFFFFF;
A :=
if BBBBBBB + BBBBBBBB then
if CCCCCCC
+ CCCCCCC then
DDDDDDDDDD + DDDDD
else
EEEEEEEEE + EEEEEE
else
FFFFFFFF + FFFFFFFFFF;
A :=
if BBBBBBB + BBBBBBBB then
if CCCCC + CCCCCC then
DDDDDDDDDD
+ DDDDDD
else
EEEEEEEEE + EEEEEE
else
FFFFFFFF + FFFFFFFFFF;
A :=
if BBBBBBB + BBBBBBBB then
if CCCCC + CCCCCC then
DDDDDDDDDD + DDDDD
else
EEEEEEEEE
+ EEEEEEE
else
FFFFFFFF + FFFFFFFFFF;
A :=
if BBBBBBB + BBBBBBBB then
if CCCCCC + CCCCC then
DDDDDDDDDD + DDDDD
else
EEEEEEEEE + EEEEEE
else
FFFFFFFFF
+ FFFFFFFFFF;
A :=
if BBBBBBBB
+ BBBBBBBB then
if CCCCCC
+ CCCCCC then
DDDDDDDDDD + DDDDD
else
EEEEEEEEE
+ EEEEEEE
else
FFFFFFFFF + FFFFFFFFF;
",
);
}
}
}

mod attributes {
Expand Down
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