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Allow duplicated switch cases.

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This commit is contained in:
Stephen Chung
2022-07-18 13:40:41 +08:00
parent 4b760d1d0f
commit 7dca916c45
9 changed files with 235 additions and 145 deletions
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51
tests/switch.rs
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@@ -32,7 +32,6 @@ fn test_switch() -> Result<(), Box<EvalAltResult>> {
)?,
'a'
);
assert_eq!(
engine.eval_with_scope::<bool>(&mut scope, "switch x { 1 => (), 2 => 'a', 42 => true }")?,
true
@@ -98,6 +97,16 @@ fn test_switch() -> Result<(), Box<EvalAltResult>> {
3
);
assert_eq!(
engine.eval_with_scope::<INT>(&mut scope, "switch 42 { 42 => 123, 42 => 999 }")?,
123
);
assert_eq!(
engine.eval_with_scope::<INT>(&mut scope, "switch x { 42 => 123, 42 => 999 }")?,
123
);
Ok(())
}
@@ -105,13 +114,6 @@ fn test_switch() -> Result<(), Box<EvalAltResult>> {
fn test_switch_errors() -> Result<(), Box<EvalAltResult>> {
let engine = Engine::new();
assert!(matches!(
*engine
.compile("switch x { 1 => 123, 1 => 42 }")
.expect_err("should error")
.0,
ParseErrorType::DuplicatedSwitchCase
));
assert!(matches!(
*engine
.compile("switch x { _ => 123, 1 => 42 }")
@@ -159,23 +161,22 @@ fn test_switch_condition() -> Result<(), Box<EvalAltResult>> {
9
);
assert!(matches!(
*engine
.compile(
"
switch x {
21 if x < 40 => 1,
21 if x == 10 => 10,
0 if x < 100 => 2,
1 => 3,
_ => 9
}
"
)
.expect_err("should error")
.0,
ParseErrorType::DuplicatedSwitchCase
));
assert_eq!(
engine.eval_with_scope::<INT>(
&mut scope,
"
switch x {
42 if x < 40 => 1,
42 if x > 40 => 7,
0 if x < 100 => 2,
1 => 3,
42 if x == 10 => 10,
_ => 9
}
"
)?,
7
);
assert!(matches!(
*engine