uqa-execution 0.3.5

Volcano physical operators with row-batch pipelines
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//
// Unified Query Algebra
//
// Copyright (c) 2023-2026 Cognica, Inc.
//

//! Scalar evaluation over the shared SQL IR.

mod call_arguments;
mod context;
mod evaluator;
pub mod plan;
mod subquery;

pub use uqa_sql::ir::{
    ScalarExpr, ScalarFrameBound, ScalarOrder, ScalarWindowFrame, ScalarWindowSpec, SubqueryId,
};

pub use call_arguments::{
    eval_call_arguments, scalar_call_argument, scalar_call_arguments,
    validate_scalar_call_arguments, ScalarCallArgument,
};
pub use context::ScalarEvalContext;
pub use evaluator::eval_scalar;
pub(crate) use evaluator::scalar_integer_binary_width;
pub use subquery::{ScalarSubqueryRunner, SubqueryResult};

#[cfg(test)]
mod tests;

/// Evaluate an immutable scalar expression without row, parameter, or stateful-function inputs.
pub fn eval_constant_scalar(expression: &ScalarExpr) -> Result<uqa_core::Value, uqa_sql::SQLError> {
    eval_scalar(expression, &ScalarEvalContext::new(None, &[]))
}