Module case_literal 

A lookup-based evaluation of CASE expr WHEN lit1 THEN res1 ... ELSE els END.

CaseLiteral replaces chains of If(Eq(expr, literal), result, If(...)) with a sorted Vec + binary-search lookup, turning O(n) evaluation into O(log n).

Represented as a CallVariadic { func: CaseLiteral { lookup, return_type }, exprs } where:

• exprs[0] = input expression (the x in CASE x WHEN ...)
• exprs[1..n] = case result expressions
• exprs[last] = els (fallback)
• lookup: Vec<CaseLiteralEntry> maps literal values to indices in exprs (sorted by Row)

Structs

CaseLiteral

Evaluates a CASE expression by looking up the input datum in a sorted Vec.

CaseLiteralEntry

A single entry in a CaseLiteral lookup table: a literal Row value paired with the index of the corresponding result expression in exprs.