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Make shadowing variables in custom syntax work.

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This commit is contained in:
Stephen Chung
2020-11-21 13:05:57 +08:00
parent 17cd305af7
commit 2be757fda0
3 changed files with 55 additions and 8 deletions
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21
tests/syntax.rs
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@@ -52,6 +52,16 @@ fn test_custom_syntax() -> Result<(), Box<EvalAltResult>> {
},
)?;
assert_eq!(
engine.eval::<INT>(
r"
let x = 0;
exec |x| -> { x += 1 } while x < 42;
x
"
)?,
42
);
assert_eq!(
engine.eval::<INT>(
r"
@@ -96,8 +106,10 @@ fn test_custom_syntax_raw() -> Result<(), Box<EvalAltResult>> {
},
_ => unreachable!(),
},
0,
|_, inputs| {
1,
|context, inputs| {
context.scope.push("foo", 999 as INT);
Ok(match inputs[0].get_variable_name().unwrap() {
"world" => 123 as INT,
"kitty" => 42 as INT,
@@ -109,6 +121,11 @@ fn test_custom_syntax_raw() -> Result<(), Box<EvalAltResult>> {
assert_eq!(engine.eval::<INT>("hello world")?, 123);
assert_eq!(engine.eval::<INT>("hello kitty")?, 42);
assert_eq!(
engine.eval::<INT>("let foo = 0; (hello kitty) + foo")?,
1041
);
assert_eq!(engine.eval::<INT>("(hello kitty) + foo")?, 1041);
assert_eq!(
*engine.compile("hello hey").expect_err("should error").0,
ParseErrorType::BadInput(LexError::ImproperSymbol("hey".to_string()))