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feat: or keyword (#315)

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Add `or` operator to Rego languages. Available via `rego-extensions`
Cargo feature.

If the evaluated lhs value is not false, null or undefined it is returned.
Otherwise rhs is evaluated and returned.

or operator has least precedence, and is left-associative.

closes #314
This commit is contained in:
Anand Krishnamoorthi
2024-09-13 16:39:19 -07:00
committed by GitHub
parent 8498274356
commit 7565ec3ecf
11 changed files with 197 additions and 26 deletions
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11
tests/parser/mod.rs
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@@ -198,6 +198,13 @@ fn match_expr_impl(e: &Expr, v: &Value) -> Result<()> {
match_expr(value, &v["inexpr"]["value"])?;
match_expr(collection, &v["inexpr"]["collection"])
}
#[cfg(feature = "rego-extensions")]
Expr::OrExpr { span, lhs, rhs } => {
match_span_opt(span, &v["orexpr"]["span"])?;
match_expr(lhs, &v["orexpr"]["lhs"])?;
match_expr(rhs, &v["orexpr"]["rhs"])
}
}
}
@@ -324,8 +331,8 @@ fn match_expr_opt(s: &Span, e: &Option<Ref<Expr>>, v: &Value) -> Result<()> {
fn match_bin_op(s: &Span, op: &BinOp, v: &Value) -> Result<()> {
match (op, v) {
(BinOp::And, Value::String(s)) if s.as_ref() == "&" => Ok(()),
(BinOp::Or, Value::String(s)) if s.as_ref() == "|" => Ok(()),
(BinOp::Intersection, Value::String(s)) if s.as_ref() == "&" => Ok(()),
(BinOp::Union, Value::String(s)) if s.as_ref() == "|" => Ok(()),
_ => bail!(
"{}",
s.source.message(