import type { AccessModifierLabel, StructDef } from '../../../model/malloy_types';
import type { BinaryMalloyOperator } from '../types/binary_operators';
import type { ExprValue } from '../types/expr-value';
import { ExpressionDef } from '../types/expression-def';
import type { FieldSpace, QueryFieldSpace } from '../types/field-space';
import type { LookupResult } from '../types/lookup-result';
import type { SpaceEntry } from '../types/space-entry';
export declare class ConstantFieldSpace implements FieldSpace {
    readonly type = "fieldSpace";
    structDef(): StructDef;
    emptyStructDef(): StructDef;
    lookup(_name: unknown): LookupResult;
    entries(): [string, SpaceEntry][];
    entry(): undefined;
    dialectName(): string;
    dialectObj(): undefined;
    connectionName(): string;
    isQueryFieldSpace(): this is QueryFieldSpace;
    accessProtectionLevel(): AccessModifierLabel;
}
export declare class ConstantExpression extends ExpressionDef {
    readonly expr: ExpressionDef;
    elementType: string;
    private cfs?;
    constructor(expr: ExpressionDef);
    getExpression(_fs: FieldSpace): ExprValue;
    private get constantFs();
    constantValue(): ExprValue;
    apply(fs: FieldSpace, op: BinaryMalloyOperator, expr: ExpressionDef): ExprValue;
    requestExpression(fs: FieldSpace): ExprValue | undefined;
}