import type { ExprValue } from '../types/expr-value';
import { ExpressionDef } from '../types/expression-def';
import type { FieldSpace } from '../types/field-space';
import { MalloyElement } from '../types/malloy-element';
export declare class Case extends ExpressionDef {
    readonly value: ExpressionDef | undefined;
    readonly choices: CaseWhen[];
    readonly elseValue?: ExpressionDef | undefined;
    elementType: string;
    constructor(value: ExpressionDef | undefined, choices: CaseWhen[], elseValue?: ExpressionDef | undefined);
    getExpression(fs: FieldSpace): ExprValue;
}
export declare class CaseWhen extends MalloyElement {
    readonly when: ExpressionDef;
    readonly then: ExpressionDef;
    elementType: string;
    constructor(when: ExpressionDef, then: ExpressionDef);
}